CA2091576A1 - Photographic processing apparatus - Google Patents
Photographic processing apparatusInfo
- Publication number
- CA2091576A1 CA2091576A1 CA002091576A CA2091576A CA2091576A1 CA 2091576 A1 CA2091576 A1 CA 2091576A1 CA 002091576 A CA002091576 A CA 002091576A CA 2091576 A CA2091576 A CA 2091576A CA 2091576 A1 CA2091576 A1 CA 2091576A1
- Authority
- CA
- Canada
- Prior art keywords
- processing
- infra
- film
- red
- photographic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
- G03D13/007—Processing control, e.g. test strip, timing devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
- G03D3/02—Details of liquid circulation
- G03D3/06—Liquid supply; Liquid circulation outside tanks
- G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus
Abstract
It is known to use infrared densitometry to measure the variations in the optical density of photographic material. In photographic processing apparatus, it is important that the photographic material is transferred from one part of the apparatus to another at precisely the correct time to prevent damage to the material.
Described herein is a method and apparatus for controlling the transfer or switching of photographic material from one processing tank to another of photographic processing apparatus during processing of the material. A threshold detector (30) is used to produce an output signal (40) indicative of a change in infrared density of the photographic material. The output signal (40) is then used to control the transfer or switching of the material from one processing tank to another.
Described herein is a method and apparatus for controlling the transfer or switching of photographic material from one processing tank to another of photographic processing apparatus during processing of the material. A threshold detector (30) is used to produce an output signal (40) indicative of a change in infrared density of the photographic material. The output signal (40) is then used to control the transfer or switching of the material from one processing tank to another.
Description
~ .1 ' `J ~ V
- W092/0~72 PCT/EP91/017~3 PHOTOGRAP~IC PROCESSING APP~RATUS
This invention relates to photographic processing apparatus and is more particularly concerned with infra-red densitometry for determining the position of photographic material within such apparatus.
It is~known to use infra-red densitometry to measure the variations in the optical density of a moving web. British Patent Specification GB-A-l364439 discloses such a method which comprises illuminating a spot on the moving web with a source of infra-red radiation and using a photosensitive detector positioned on the opposite side of the web from the source to measure the diffused radiation issuing from the web. A radiation-absorbing screen is used to prevent specular radiation from reaching the detector.
The energy impinging on the detector is related to the distance of the web from the detector. The optical density of the web can then be determined from the level of radiation received by the detector. The arrangement is such that the optical density measurement is not affected by any vibrations produced in the moving web.
International Patent Applications WO-A-9l/10941 & WO-A-9l/10940 ~British '?atent Applications 3000637.0 and 9000620.6 respectively) disclose the use of infra-red densitometry to monitor the infra-red density of photographic film. In the former case, the infra-red density of the film at any stage provides an indication of the amount of processing which the film has undergone. In the latter case, the infra-red density of the film is used to determine replenishmen~
needs for photographic processing apparatus.
It is known to use cyclic processing apparatus for processing photographic material. In , . . . . . . . . . . . . . . . . .. . . .. . ..
. , , , , ~ , . . ... . . .
- -.
: . : . ::~ .: : :. :- ::
., . . ; , : .-. :: :: -wo~ 7~ ~ ~ 9 1 5 7 6 PC~/~Pg1/01728 such apparatus, photographlc material is maàe to travel around a continuous loop whilst it is totally immersed in processing soiutions. The material is maintained in a particular processing solution until the requisite processing time has elapsed. The material is then transferred into the processing solution of the next stage of the processing apparatus. Material transport speed needs to be high so that the time for which the material spends in the air during such transfer is minimised. This is because air causes oxidation of many of the photographic processing materials used and rapidly reduces their effectiveness.
It is important that the transfer or switching mechanisms are operated at precisely the correct time to prevent damage to the material beina transferred from one processing solution to the next.
It is therefore an object of the present invention to provide apparatus and method for controlling such transfer or switching of photographic material from one processing tank to another during processing of the material.
According to one aspect of the present invention, there is provided photographic processing apparatus for processing photosensitive material, the apparatus comprising:-at least one processing tanki a densitometer arrangement associated witheach processing tank and positioned substantially close to the entrance to the processing tank, the densitometer arrangement being operable to measure the infra-red density of the photosensitive materiali and processing means for processing an outpu~
signal from the densitometer arrangement .
:: . ,. . - : .... :::
WV92/OS47~ ~ ~ 3 ~ 5 7 ~ PCT/EP91/0172R
eharacteri2ed in that the processing means includes a threshold detector which provides the output signal when a change of infra-red density is detected, and in that the output signal is used to - 5 control the transfer of photosensitive material from one processing tank to another~
Advantageously, an infra-red opaque label is attached to the photosensitive material to generate the change in infra-red density.
For a better understanding of the present invention, reference will now be made, by way of example only, to the accompanying drawings ~n which:-Figure l is a schematic block diagram of apparatus constructed in accordance with the present lS invention; and Figure 2 is a circuit diagram of a threshold ,~ detector circuit as used in the apparatus of Figure l.
Although the present invention will now be - described with reference to the processing of photographic film, it is equally applicable to any cyclic processing apparatus in which the material being processed needs to be accurately transferred from one tank to another.
The present invention can be applied to apparatus in which there are a plurality of processing tanks. However, the invention will now be described with reference to a single processing tank.
In the present invention, measurements and/or readings are taken by an infra-red sensitive arrangement. However, as the infra-red density of the film falls to zero after fixing, an infra-red opaque label must be attached to the leading edge of the film so that it can be detected by the infra-red sensitlve arrangement.
, .. , ~ . . . . . . . .
- ~ -. . ~ .
W092/0~72 ~ 5 ~ 6 PCT/EP91/01728 The apparatus, as shown in Figure 1, comprises an infra-red densitometer detector arrangement lO which is located close to the film entrance (not shown) in a processing tank. The detector arrangement lO operates both to project infra-red radiation on to the film as it passes by it and to detect radiation emanating from the film.
Any suitable infra-red source (not shown) may be used. An infra-red sensor is mounted in the detèctor arrangement lO for detectlng radiation transmitted by the film.
An output signal 12 from the detec~or arrangement 10 is then passed to a logarithmic amplifie- 20 which amplifies the signal. A part 22' of -the amplified signal 22 is then passed to a threshold detector 30 which is connected to provide a digital output signal at 40. The digital output signal is ~ produced when a change of infra-red density is detected, for example as the infra-red opaque label passes ~he detector arrangement 10, and is then used by a computer ~not shown) to control film movement within the processing apparatus.
Another part 22" of the amplified signal ~2 provides an output 50 which corresponds to the analogue value of the infra-red density of the film.
If more than one film is to be processed simultaneously, a separate infra-red detector arrangement is required for each film. However, although such a configuration of detector arrangements gives the greatest flexibility, it also tends to be costly to implement.
Alternatively, a multiplexer 60 may be used to allow more than one film to be processed at the same time. The use of the multiplexer 60 is optional and is only required if the output signal from more than one ... . . .... . ... . ...
, - - - - - : :
. . . -, . . . ,, _ , . -,;, ~ , . . -. , .-W~92~ 2 ~ ~ 31~ 7 6 PCT/EP91/01728 densitometer detector arrangement 10 is to be amplified by the same logarithmic amplifier/threshold detector pair 20, 30.
If the output signals from more than one densitometer detector arrangemen~ 10 is to be processed by a single logarithmic amplifier/threshold detector pair 20, 30, data from only one tank can be processed at one time. However, by choosing a suitable multiplexing rate and having sufficient computer power and speed, all ~he process stages can be scanned continuously. In this case, the data acquisi~ion rate must be fast enough to catch the opaque label whenever it passes the densitometer arrangement 10. In the present case, a data acquisition rate of the order of 2ms is used.
Alternatively, the densitometer detector arrangements may be grouped in twos or threes, each group being multiplexed to a logarithmic amplifier/threshold detector pair.
Each infra-red densitometer detector arrangement 10 is used to measure the length of the photographic film in the processing tank. As the ilm is introduced into developer solution in the processing tank, its infra-red density starts to rise. All the time the film is in the developer solution, its infra-red density is above a detection threshold. As the film passes the densitometer head, a signal is generated by the threshold detector 30 and indicates to a control computer (not shown) that film is present.
After the film has made one circuit around the loop, a second signal is generated. During this time, a separate micro-controller (not shown) is readina and processing the analogue infra-red density data.
The film is permitted to make two complete passes of the loop to allow it to soften, and then the :, , .. ... . . . . . ...................... .. .. . ..
.. . . . ..
. . . . _ . .
W092/0~72 ~ ~ 3 1~ 7 6 PCT/EP91/01728 film length and cycle time are measured. The cycie time is measured between successive film edge detections. The length of the total film path is fixed and is therefore known. The time between detecting the leading edge and the trailing edge of the film represents the film length.
The film leng~h is given by:
t 10 , film length = ~ . d tcycle where tcyCle is the cycle time;
tfilm is the time for the film presence; and 15 d is the film path length.
This information is calculated by the computer during the third pass and this value is then used in relation to that particular film as it passes through the rest of the processing apparatus.
The cycle time is continuously monitored for each pass to cope with possible variations in film transport speed.
The distance from the infra-red sensor to the film switching point is fixed and is therefore known.
the computer calculates the switching time from data stored in it ~hich is related to the time that the film' first entered the processing solution, that is the first detection in that processing solution. Using the most recently acquired value of the cycle time, the computer then calculates the precise moment at which to operate the transfer or switching mechanism. The algorithm used by the computer to do,this calculates the switching time to the nearest half-cycle. This gives an absolute accuracy in the processing time of +/~ 5tcycle - - - - - - - -- W092/~7~ ~ B 915 7 ~ PCrtEP91/017 It may be advantageous to have the motor speed of the drive system controlled by the computer.
This means that after the length of the film and the cycle time have been measured, the computer can calculate the motor speed required to give the precise time in the most critical solution of the processing cycle (namely, in the developer).
A time window may be used for the detection of the leading edge of the film. Once the cycle ti~e and the leng~h of the film have been measured, film sensing is disabled until a few tenths of a second before the leading edge is expected, based on the most current value of cycle time~ This feature is particularly important during fixing as the infra-red density of the film gradually falls to zero. In this period, high and low density infra-red density regions on the film may c~use spurious detections. Window detection as described above overcomes this problem.
It is important to note that at the end of fixing and in subsequent processing solutions, only the infra-red opaque label on the film will generate the film position signal.
There are substantial advantages in using infra-red densitometer arrangements for determinins film position information, one of these being that no mechanical parts are required. This keeps the film track in the processing apparatus clear with less likelihood of film jams. Another advantage is that densitometer arrangements are already in use in some processing tanks, and the same arrangement, in conjunction with appropriate computer software, could be used to determine the fi}m position thereby providing a cost effective arrangemen~.
.. . . .. .. . . .. .
- - - - .
. .
, ~ ; ,~ - . :
. : . : :
- W092/0~72 PCT/EP91/017~3 PHOTOGRAP~IC PROCESSING APP~RATUS
This invention relates to photographic processing apparatus and is more particularly concerned with infra-red densitometry for determining the position of photographic material within such apparatus.
It is~known to use infra-red densitometry to measure the variations in the optical density of a moving web. British Patent Specification GB-A-l364439 discloses such a method which comprises illuminating a spot on the moving web with a source of infra-red radiation and using a photosensitive detector positioned on the opposite side of the web from the source to measure the diffused radiation issuing from the web. A radiation-absorbing screen is used to prevent specular radiation from reaching the detector.
The energy impinging on the detector is related to the distance of the web from the detector. The optical density of the web can then be determined from the level of radiation received by the detector. The arrangement is such that the optical density measurement is not affected by any vibrations produced in the moving web.
International Patent Applications WO-A-9l/10941 & WO-A-9l/10940 ~British '?atent Applications 3000637.0 and 9000620.6 respectively) disclose the use of infra-red densitometry to monitor the infra-red density of photographic film. In the former case, the infra-red density of the film at any stage provides an indication of the amount of processing which the film has undergone. In the latter case, the infra-red density of the film is used to determine replenishmen~
needs for photographic processing apparatus.
It is known to use cyclic processing apparatus for processing photographic material. In , . . . . . . . . . . . . . . . . .. . . .. . ..
. , , , , ~ , . . ... . . .
- -.
: . : . ::~ .: : :. :- ::
., . . ; , : .-. :: :: -wo~ 7~ ~ ~ 9 1 5 7 6 PC~/~Pg1/01728 such apparatus, photographlc material is maàe to travel around a continuous loop whilst it is totally immersed in processing soiutions. The material is maintained in a particular processing solution until the requisite processing time has elapsed. The material is then transferred into the processing solution of the next stage of the processing apparatus. Material transport speed needs to be high so that the time for which the material spends in the air during such transfer is minimised. This is because air causes oxidation of many of the photographic processing materials used and rapidly reduces their effectiveness.
It is important that the transfer or switching mechanisms are operated at precisely the correct time to prevent damage to the material beina transferred from one processing solution to the next.
It is therefore an object of the present invention to provide apparatus and method for controlling such transfer or switching of photographic material from one processing tank to another during processing of the material.
According to one aspect of the present invention, there is provided photographic processing apparatus for processing photosensitive material, the apparatus comprising:-at least one processing tanki a densitometer arrangement associated witheach processing tank and positioned substantially close to the entrance to the processing tank, the densitometer arrangement being operable to measure the infra-red density of the photosensitive materiali and processing means for processing an outpu~
signal from the densitometer arrangement .
:: . ,. . - : .... :::
WV92/OS47~ ~ ~ 3 ~ 5 7 ~ PCT/EP91/0172R
eharacteri2ed in that the processing means includes a threshold detector which provides the output signal when a change of infra-red density is detected, and in that the output signal is used to - 5 control the transfer of photosensitive material from one processing tank to another~
Advantageously, an infra-red opaque label is attached to the photosensitive material to generate the change in infra-red density.
For a better understanding of the present invention, reference will now be made, by way of example only, to the accompanying drawings ~n which:-Figure l is a schematic block diagram of apparatus constructed in accordance with the present lS invention; and Figure 2 is a circuit diagram of a threshold ,~ detector circuit as used in the apparatus of Figure l.
Although the present invention will now be - described with reference to the processing of photographic film, it is equally applicable to any cyclic processing apparatus in which the material being processed needs to be accurately transferred from one tank to another.
The present invention can be applied to apparatus in which there are a plurality of processing tanks. However, the invention will now be described with reference to a single processing tank.
In the present invention, measurements and/or readings are taken by an infra-red sensitive arrangement. However, as the infra-red density of the film falls to zero after fixing, an infra-red opaque label must be attached to the leading edge of the film so that it can be detected by the infra-red sensitlve arrangement.
, .. , ~ . . . . . . . .
- ~ -. . ~ .
W092/0~72 ~ 5 ~ 6 PCT/EP91/01728 The apparatus, as shown in Figure 1, comprises an infra-red densitometer detector arrangement lO which is located close to the film entrance (not shown) in a processing tank. The detector arrangement lO operates both to project infra-red radiation on to the film as it passes by it and to detect radiation emanating from the film.
Any suitable infra-red source (not shown) may be used. An infra-red sensor is mounted in the detèctor arrangement lO for detectlng radiation transmitted by the film.
An output signal 12 from the detec~or arrangement 10 is then passed to a logarithmic amplifie- 20 which amplifies the signal. A part 22' of -the amplified signal 22 is then passed to a threshold detector 30 which is connected to provide a digital output signal at 40. The digital output signal is ~ produced when a change of infra-red density is detected, for example as the infra-red opaque label passes ~he detector arrangement 10, and is then used by a computer ~not shown) to control film movement within the processing apparatus.
Another part 22" of the amplified signal ~2 provides an output 50 which corresponds to the analogue value of the infra-red density of the film.
If more than one film is to be processed simultaneously, a separate infra-red detector arrangement is required for each film. However, although such a configuration of detector arrangements gives the greatest flexibility, it also tends to be costly to implement.
Alternatively, a multiplexer 60 may be used to allow more than one film to be processed at the same time. The use of the multiplexer 60 is optional and is only required if the output signal from more than one ... . . .... . ... . ...
, - - - - - : :
. . . -, . . . ,, _ , . -,;, ~ , . . -. , .-W~92~ 2 ~ ~ 31~ 7 6 PCT/EP91/01728 densitometer detector arrangement 10 is to be amplified by the same logarithmic amplifier/threshold detector pair 20, 30.
If the output signals from more than one densitometer detector arrangemen~ 10 is to be processed by a single logarithmic amplifier/threshold detector pair 20, 30, data from only one tank can be processed at one time. However, by choosing a suitable multiplexing rate and having sufficient computer power and speed, all ~he process stages can be scanned continuously. In this case, the data acquisi~ion rate must be fast enough to catch the opaque label whenever it passes the densitometer arrangement 10. In the present case, a data acquisition rate of the order of 2ms is used.
Alternatively, the densitometer detector arrangements may be grouped in twos or threes, each group being multiplexed to a logarithmic amplifier/threshold detector pair.
Each infra-red densitometer detector arrangement 10 is used to measure the length of the photographic film in the processing tank. As the ilm is introduced into developer solution in the processing tank, its infra-red density starts to rise. All the time the film is in the developer solution, its infra-red density is above a detection threshold. As the film passes the densitometer head, a signal is generated by the threshold detector 30 and indicates to a control computer (not shown) that film is present.
After the film has made one circuit around the loop, a second signal is generated. During this time, a separate micro-controller (not shown) is readina and processing the analogue infra-red density data.
The film is permitted to make two complete passes of the loop to allow it to soften, and then the :, , .. ... . . . . . ...................... .. .. . ..
.. . . . ..
. . . . _ . .
W092/0~72 ~ ~ 3 1~ 7 6 PCT/EP91/01728 film length and cycle time are measured. The cycie time is measured between successive film edge detections. The length of the total film path is fixed and is therefore known. The time between detecting the leading edge and the trailing edge of the film represents the film length.
The film leng~h is given by:
t 10 , film length = ~ . d tcycle where tcyCle is the cycle time;
tfilm is the time for the film presence; and 15 d is the film path length.
This information is calculated by the computer during the third pass and this value is then used in relation to that particular film as it passes through the rest of the processing apparatus.
The cycle time is continuously monitored for each pass to cope with possible variations in film transport speed.
The distance from the infra-red sensor to the film switching point is fixed and is therefore known.
the computer calculates the switching time from data stored in it ~hich is related to the time that the film' first entered the processing solution, that is the first detection in that processing solution. Using the most recently acquired value of the cycle time, the computer then calculates the precise moment at which to operate the transfer or switching mechanism. The algorithm used by the computer to do,this calculates the switching time to the nearest half-cycle. This gives an absolute accuracy in the processing time of +/~ 5tcycle - - - - - - - -- W092/~7~ ~ B 915 7 ~ PCrtEP91/017 It may be advantageous to have the motor speed of the drive system controlled by the computer.
This means that after the length of the film and the cycle time have been measured, the computer can calculate the motor speed required to give the precise time in the most critical solution of the processing cycle (namely, in the developer).
A time window may be used for the detection of the leading edge of the film. Once the cycle ti~e and the leng~h of the film have been measured, film sensing is disabled until a few tenths of a second before the leading edge is expected, based on the most current value of cycle time~ This feature is particularly important during fixing as the infra-red density of the film gradually falls to zero. In this period, high and low density infra-red density regions on the film may c~use spurious detections. Window detection as described above overcomes this problem.
It is important to note that at the end of fixing and in subsequent processing solutions, only the infra-red opaque label on the film will generate the film position signal.
There are substantial advantages in using infra-red densitometer arrangements for determinins film position information, one of these being that no mechanical parts are required. This keeps the film track in the processing apparatus clear with less likelihood of film jams. Another advantage is that densitometer arrangements are already in use in some processing tanks, and the same arrangement, in conjunction with appropriate computer software, could be used to determine the fi}m position thereby providing a cost effective arrangemen~.
.. . . .. .. . . .. .
- - - - .
. .
, ~ ; ,~ - . :
. : . : :
Claims (4)
1. Photographic processing apparatus for processing photosensitive material, the apparatus comprising:-at least one processing tank;
a densitometer arrangement (10) associated with each processing tank and positioned substantially close to the entrance to the processing tank, the densitometer arrangement (10) being operable to measure the infra-red density of the photosensitive material;
and processing means (20, 30, 60) for processing an output signal (22, 22', 22") from the densitometer arrangement (10);
characterized in that the processing means (20, 30, 60) includes a threshold detector (30) which provides the output signal (22, 22', 22", 40) when a rapid change of infra-red density is detected, and in that the output signal (22, 22', 22", 40) is used to control the transfer of photosensitive material from one processing tank to another.
a densitometer arrangement (10) associated with each processing tank and positioned substantially close to the entrance to the processing tank, the densitometer arrangement (10) being operable to measure the infra-red density of the photosensitive material;
and processing means (20, 30, 60) for processing an output signal (22, 22', 22") from the densitometer arrangement (10);
characterized in that the processing means (20, 30, 60) includes a threshold detector (30) which provides the output signal (22, 22', 22", 40) when a rapid change of infra-red density is detected, and in that the output signal (22, 22', 22", 40) is used to control the transfer of photosensitive material from one processing tank to another.
2. Apparatus according to claim 1, wherein an infra-red opaque label is attached to the photosensitive material to generate the rapid change in infra-red density.
3. Apparatus according to claim 1 or 2, wherein the processing means (20, 30, 60) further includes a logarithmic amplifier (20) which amplifies a signal (12) from the densitometer arrangement (10) to produce the output signal (22, 22', 22", 40).
4. Apparatus according to any one of claims 1 to 3, wherein the processing means (20, 30, 60) further includes a multiplexer (60).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9020124.5 | 1990-09-14 | ||
| GB909020124A GB9020124D0 (en) | 1990-09-14 | 1990-09-14 | Photographic processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2091576A1 true CA2091576A1 (en) | 1992-03-15 |
Family
ID=10682209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002091576A Abandoned CA2091576A1 (en) | 1990-09-14 | 1991-09-11 | Photographic processing apparatus |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5416550A (en) |
| EP (1) | EP0552175B1 (en) |
| JP (1) | JP2966092B2 (en) |
| KR (1) | KR930702701A (en) |
| CA (1) | CA2091576A1 (en) |
| DE (1) | DE69103761T2 (en) |
| GB (1) | GB9020124D0 (en) |
| MY (1) | MY105295A (en) |
| WO (1) | WO1992005472A1 (en) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5988896A (en) * | 1996-10-26 | 1999-11-23 | Applied Science Fiction, Inc. | Method and apparatus for electronic film development |
| US6069714A (en) | 1996-12-05 | 2000-05-30 | Applied Science Fiction, Inc. | Method and apparatus for reducing noise in electronic film development |
| US6017688A (en) | 1997-01-30 | 2000-01-25 | Applied Science Fiction, Inc. | System and method for latent film recovery in electronic film development |
| AU3307099A (en) | 1998-02-23 | 1999-09-06 | Applied Science Fiction, Inc. | Progressive area scan in electronic film development |
| US6594041B1 (en) | 1998-11-20 | 2003-07-15 | Applied Science Fiction, Inc. | Log time processing and stitching system |
| US6404516B1 (en) | 1999-02-22 | 2002-06-11 | Applied Science Fiction, Inc. | Parametric image stitching |
| US6781620B1 (en) | 1999-03-16 | 2004-08-24 | Eastman Kodak Company | Mixed-element stitching and noise reduction system |
| TW495389B (en) | 1999-06-29 | 2002-07-21 | Applied Science Fiction Inc | Slot coater device for applying developer to film for electronic film development |
| AU6914900A (en) | 1999-08-17 | 2001-03-13 | Applied Science Fiction, Inc. | Method and system for using calibration patches in electronic film processing |
| AU2054401A (en) * | 1999-12-17 | 2001-06-25 | Applied Science Fiction, Inc. | Method and system for selective enhancement of image data |
| US20010030685A1 (en) * | 1999-12-30 | 2001-10-18 | Darbin Stephen P. | Method and apparatus for digital film processing using a scanning station having a single sensor |
| US6554504B2 (en) | 1999-12-30 | 2003-04-29 | Applied Science Fiction, Inc. | Distributed digital film processing system and method |
| US6788335B2 (en) | 1999-12-30 | 2004-09-07 | Eastman Kodak Company | Pulsed illumination signal modulation control & adjustment method and system |
| US6707557B2 (en) | 1999-12-30 | 2004-03-16 | Eastman Kodak Company | Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities |
| US6447178B2 (en) | 1999-12-30 | 2002-09-10 | Applied Science Fiction, Inc. | System, method, and apparatus for providing multiple extrusion widths |
| AU2465001A (en) | 1999-12-30 | 2001-07-16 | Applied Science Fiction, Inc. | System and method for digital color dye film processing |
| AU2742701A (en) | 1999-12-30 | 2001-07-16 | Applied Science Fiction, Inc. | Improved system and method for digital film development using visible light |
| US6864973B2 (en) * | 1999-12-30 | 2005-03-08 | Eastman Kodak Company | Method and apparatus to pre-scan and pre-treat film for improved digital film processing handling |
| US6813392B2 (en) | 1999-12-30 | 2004-11-02 | Eastman Kodak Company | Method and apparatus for aligning multiple scans of the same area of a medium using mathematical correlation |
| US6965692B1 (en) | 1999-12-30 | 2005-11-15 | Eastman Kodak Company | Method and apparatus for improving the quality of reconstructed information |
| AU2463501A (en) * | 1999-12-30 | 2001-07-24 | Applied Science Fiction, Inc. | Methods and apparatus for transporting and positioning film in a digital film processing system |
| AU2743701A (en) * | 1999-12-30 | 2001-07-16 | Applied Science Fiction, Inc. | System and method for digital film development using visible light |
| US6475711B1 (en) | 1999-12-31 | 2002-11-05 | Applied Science Fiction, Inc. | Photographic element and digital film processing method using same |
| AU2733601A (en) * | 1999-12-31 | 2001-07-16 | Applied Science Fiction, Inc. | Digital film processing method |
| US6990251B2 (en) | 2000-02-03 | 2006-01-24 | Eastman Kodak Company | Method, system, and software for signal processing using sheep and shepherd artifacts |
| US20010040701A1 (en) * | 2000-02-03 | 2001-11-15 | Edgar Albert D. | Photographic film having time resolved sensitivity distinction |
| AU2001236693A1 (en) | 2000-02-03 | 2001-08-14 | Applied Science Fiction | Film processing solution cartridge and method for developing and digitizing film |
| WO2001057796A2 (en) | 2000-02-03 | 2001-08-09 | Applied Science Fiction | Method, system, and software for signal processing using pyramidal decomposition |
| AU2001238021A1 (en) | 2000-02-03 | 2001-08-14 | Applied Science Fiction | Match blur system and method |
| US6619863B2 (en) | 2000-02-03 | 2003-09-16 | Eastman Kodak Company | Method and system for capturing film images |
| AU2001236694A1 (en) | 2000-02-03 | 2001-12-17 | Applied Science Fiction | Method and system for self-service film processing |
| US20060182337A1 (en) * | 2000-06-28 | 2006-08-17 | Ford Benjamin C | Method and apparatus for improving the quality of reconstructed information |
| US20020118402A1 (en) * | 2000-09-19 | 2002-08-29 | Shaw Timothy C. | Film bridge for digital film scanning system |
| EP1323292A2 (en) * | 2000-09-21 | 2003-07-02 | Applied Science Fiction | Dynamic image correction and imaging systems |
| US20020146171A1 (en) * | 2000-10-01 | 2002-10-10 | Applied Science Fiction, Inc. | Method, apparatus and system for black segment detection |
| US6888997B2 (en) * | 2000-12-05 | 2005-05-03 | Eastman Kodak Company | Waveguide device and optical transfer system for directing light to an image plane |
| JP2004523793A (en) | 2001-02-09 | 2004-08-05 | イーストマン コダック カンパニー | Digital film processing solution and digital film processing method |
| US6805501B2 (en) * | 2001-07-16 | 2004-10-19 | Eastman Kodak Company | System and method for digital film development using visible light |
| US7263240B2 (en) * | 2002-01-14 | 2007-08-28 | Eastman Kodak Company | Method, system, and software for improving signal quality using pyramidal decomposition |
| CN100490505C (en) * | 2004-02-13 | 2009-05-20 | 索尼株式会社 | Image processing device and image processing method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2296048A (en) * | 1938-03-26 | 1942-09-15 | Process Devclopment Corp | Method of photographic development to a predetermined value of contrast |
| FR1200243A (en) * | 1957-03-05 | 1959-12-18 | Mc Corquodale & Company | Photographic development method and apparatus |
| DE1497487A1 (en) * | 1965-10-15 | 1969-07-10 | Fuji Photo Film Co Ltd | Method and device for regulating the quality of photographic images |
| US3680463A (en) * | 1967-03-10 | 1972-08-01 | Curtis C Attridge | Automatic film processing device |
| GB1364439A (en) * | 1970-08-25 | 1974-08-21 | Agfa Gevaert | Measurement of optical density |
| US3785268A (en) * | 1973-01-19 | 1974-01-15 | D Gregg | Scanning type photographic film developing system and apparatus |
| FR2542881A1 (en) * | 1983-03-18 | 1984-09-21 | Arts Graphiques Systemes | Device for detecting film density |
| US4881095A (en) * | 1987-09-11 | 1989-11-14 | Fuji Photo Film Co., Ltd. | Process for developing photographed film and for printing images through developed film |
| GB9000637D0 (en) * | 1990-01-11 | 1990-03-14 | Kodak Ltd | Photographic film processing |
| GB9000620D0 (en) * | 1990-01-11 | 1990-03-14 | Kodak Ltd | Automatic processing devices for processing photographic materials |
-
1990
- 1990-09-14 GB GB909020124A patent/GB9020124D0/en active Pending
-
1991
- 1991-02-11 MY MYPI91000214A patent/MY105295A/en unknown
- 1991-09-11 EP EP91916545A patent/EP0552175B1/en not_active Expired - Lifetime
- 1991-09-11 US US08/030,064 patent/US5416550A/en not_active Expired - Fee Related
- 1991-09-11 CA CA002091576A patent/CA2091576A1/en not_active Abandoned
- 1991-09-11 DE DE69103761T patent/DE69103761T2/en not_active Expired - Fee Related
- 1991-09-11 WO PCT/EP1991/001728 patent/WO1992005472A1/en active IP Right Grant
- 1991-09-11 KR KR1019930700769A patent/KR930702701A/en not_active IP Right Cessation
- 1991-09-11 JP JP3514884A patent/JP2966092B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2966092B2 (en) | 1999-10-25 |
| EP0552175A1 (en) | 1993-07-28 |
| DE69103761T2 (en) | 1995-04-13 |
| DE69103761D1 (en) | 1994-10-06 |
| JPH06501109A (en) | 1994-01-27 |
| MY105295A (en) | 1994-09-30 |
| GB9020124D0 (en) | 1990-10-24 |
| KR930702701A (en) | 1993-09-09 |
| WO1992005472A1 (en) | 1992-04-02 |
| US5416550A (en) | 1995-05-16 |
| EP0552175B1 (en) | 1994-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2091576A1 (en) | Photographic processing apparatus | |
| EP0422545B1 (en) | Sheet thickness measuring apparatus | |
| ES2092132T3 (en) | NON-DESTRUCTIVE AND CONTINUOUS DEVICE AND METHOD OF CONTROL OF A VARIATION IN THE PROFILE THICKNESS. | |
| GB2081891A (en) | Web monitoring apparatus | |
| JP3242194B2 (en) | Method of measuring the speed of the photoreceptor belt in the process direction | |
| US4449084A (en) | Positioning servo-mechanism or tachometer employing self-scanning light sensing array | |
| US5872830A (en) | Device and method of imaging or measuring of a radiation source | |
| GB2087550A (en) | Apparatus for measurement of volume and related parameters | |
| JPS5886544A (en) | Liquid replenishing amount controller for developer | |
| JPH06148334A (en) | Radiation monitor | |
| FI891259A0 (en) | ROERELSEDETEKTOR. | |
| EP0428715B1 (en) | Optical web detection and measurement system, especially adapted for controlling replenishment of x-ray film processing chemicals | |
| JP2920687B2 (en) | X-ray mapping device | |
| US5113081A (en) | Web inspection system and method with exposure, detection and sampling means | |
| US6304314B1 (en) | Determination of the speed of movement of an image-bearing sheet | |
| JPH10269389A (en) | Method for detecting passage of plural persons in gate device | |
| JPS5678857A (en) | Toner density detecting device | |
| EP0600383B1 (en) | Scanner for photographic processor | |
| JPH07294205A (en) | Apparatus for measuring width of sheet or the like | |
| JPH0833358B2 (en) | Total reflection fluorescent X-ray analyzer | |
| JP2000111650A (en) | Radiation detecting device | |
| JP2576231B2 (en) | Landry Monitor | |
| SU1052843A1 (en) | Device for automatic gauging of width of rolled material | |
| JPH0613441Y2 (en) | Width measuring device for belts such as sheets using a centering sensor with A, G and C circuits | |
| JPH0291508A (en) | Thickness measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |