WO2001087629A1 - Ink jet marker - Google Patents
Ink jet marker Download PDFInfo
- Publication number
- WO2001087629A1 WO2001087629A1 PCT/US2001/040537 US0140537W WO0187629A1 WO 2001087629 A1 WO2001087629 A1 WO 2001087629A1 US 0140537 W US0140537 W US 0140537W WO 0187629 A1 WO0187629 A1 WO 0187629A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ink
- marker
- control circuit
- ink jet
- head
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/006—Pens with writing-points other than nibs or balls using a spraying system, e.g. airbrushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/36—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers
Definitions
- the present invention relates generally to the ink jet printing art, and in particular, to a hand-held marking device which utilizes an ink jet print-head in order to selectively apply ink to a print medium.
- the print-head is part of a replaceable cartridge that may be replaced as desired.
- Various ink jet technologies that are utilized in conjunction with printer devices are known in the art. These generally include continuous feed ink jet systems and drop-on-demand systems.
- One such printer that is based on a drop-on-demand system utilizes a print-head that is disposed on a carriage. The carriage is translatable over a print medium. Relatively sophisticated electronics are employed including timing and encoding circuitry to move the print medium in a first direction and to move the carriage in an orthogonal direction thereto.
- the print-head in these systems typically comprises a piezoelectric transducer, an ink chamber, and an ejection nozzle.
- the transducer is disposed to selectively vibrate the ink chamber in proximate relation to the ejection nozzle.
- a non-pressurized ink pulse jet is generated at a desired frequency, i.e., 1 to 10 kHz.
- the ink drops are generated on demand by a transient pressure pulse and directed toward a receiving surface. Volume changes in the ink chamber located behind the ink ejection nozzle cause the droplets to eject. These volume changes are generated by the piezoelectric transducer.
- print-heads based on this technology typically have arrays which include tens of nozzles operating synchronously. • > '
- a supply channel which leads from an ink reservoir to one or a plurality of nozzles on an orifice plate.
- This supply channel is designed to provide a certain amount of resistance to flow.
- a thermo-electric transducer disposed proximate to the supply channel heats up the ink and produces a small vapor bubble.
- the vapor bubble drives the ink from the nozzle with a certain force.
- the maximum ejection frequency is approximately 4 kHz .
- the marking device comprises an elongated body having a generally cylindrical or other desired shape and adapted for use as a writing instrument.
- a replaceable cartridge containing a reservoir of ink is disposed within the body, preferably at one end of the device body.
- the marking device also comprises an ink jet print-head disposed at the opposite end of the instrument body, and in fluid communication with the reservoir.
- the print-head includes a plurality of ejection nozzles adapted to dispense a selected amount of ink upon receipt of control signals by the print-head.
- the marking device also comprises an electrical control circuit coupled to the ink jet print-head disposed to provide the control signals to the ink jet print-head.
- the electrical control circuit is located in a base station console.
- the electrical circuit is connected to the print-head with electrical terminals.
- the electrical control circuit is disposed within the cylindrical body of the marking device .
- a replaceable ink cartridge is provided for insertion within a handheld writing instrument body.
- the cartridge includes a reservoir of ink adapted for placement within the body and optionally a print-head.
- the print-head includes a plurality of ejection nozzles coupled with the reservoir.
- the print-head is adapted to dispense selected amounts of ink from the plurality of ejection nozzles upon receipt of control signals provided by an electrical circuit.
- a thin film battery is wrapped around the reservoir body.
- FIG. 1 is a perspective view of a writing instrument according to the present invention
- Fig. 2 illustrates an enlarged cross section view of a cartridge including an ink reservoir and a print-head of one embodiment of the writing instrument shown in Fig.
- Figs. 3A and 3B are cross-sectional or cut-away views which illustrate other forms of a print-head which may be used in conjunction with the invention
- Fig. ' 4 is a simplified electrical schematic diagram suitable for providing control signals to the print-head shown in Figs. 2, 3A or 3B;
- Fig. 5 is an output waveform of a signal provided by the circuit shown in Fig. 4;
- Fig. 6 is a perspective view illustrating a print- head with multiple ejection nozzles according to another embodiment of the invention.
- Fig. 6A is a cross-sectional view of the print-head with multiple ejection nozzles taken along the lines 6A- 6A shown in Fig. 6;
- Fig. 6B is a bottom view of the print-head with multiple ejection nozzles shown in Fig. 6;
- Fig. 7 illustrates a simplified block diagram of control circuitry for a writing instrument print-head made in accordance with Fig. 6, Fig. 6A and Fig. 6B;
- Fig. 8 is a partially cutaway perspective view of yet another embodiment of the present invention.
- Fig. 9 is a partially cutaway view an embodiment of the present that is constructed to generate color printing
- Fig. 10 illustrates a simplified block diagram of control circuitry for a writing instrument print-head made in accordance with Fig. 9;
- Fig. 11 is a cross-sectional view of a portion of a print-head made in accordance with another embodiment of the present invention.
- Fig. 12 is a perspective view of a further embodiment of the present invention
- Fig. 13 is a perspective view. of various input controls that may be used for an ink jet marker in the embodiment of Fig. 12
- Fig. 14 is another perspective view of the embodiment illustrated in Fig. 12, showing actuation of a slider control
- Fig. 15 is a perspective view of the embodiment illustrated in Fig. 12, illustrating a rotatable control knob located on end of the marker;
- Fig. 16 is an exploded view of the marker shown in Fig. 15, illustrating a removable ink cartridge and a removable integrated circuit package according to one embodiment of the invention
- Fig. 17 is a cross sectional view of the marker shown in Fig. 12, taken along the lines 17-17 thereof;
- Fig. 18 is a simplified block diagram representation of a control circuit for the present invention.
- the present invention relates to a hand- held ink jet marker.
- the invention is relatively simple in design and construction, while being readily usable for a wide variety of marking or writing tasks.
- the marker includes a replaceable ink jet cartridge that may be readily installed into the marker.
- Fig. 1 illustrates an ink jet marker 10 according to one embodiment of the invention.
- the marker 10 comprises a longitudinally extending, generally cylindrical body or handle 12, a base station 14, and electrical connection terminals 16 disposed at one end of the body 12 that electrically connects the body 12 with the base station 14. While the embodiment shown in Fig. 1 is a cylindrical body, it may also be designed in other desired shapes, such as an oval shape or as an ergonomically designed body for ready hand manipulation.
- the opposite end of the body 12 contains a marking or print-head 18 disposed to receive a supply of ink from an ink reservoir (see Fig. 2) .
- the body may be provided with cooperating first and second pieces 12a and 12b that are connected with threads as will be understood by those skilled in the art.
- the print-head 18 is electrically coupled with the control station 14 and, in response to control signals received therefrom, selectively ejects a stream or predetermined pattern of ink droplets onto a writing or print medium 20.
- the embodiment shown is a single nozzle ink jet writing device. This arrangement provides a unique and unobvious arrangement that is suitable for many applications.
- Fig. 2 shows in cross section the details of an ink jet cartridge 22 which may be utilized in the writing instrument 10 of Fig. 1.
- the cartridge 22 comprises the print-head 18, an elongated ink reservoir 24 and a flexible connecting hose 26 disposed between the print- head 18 and the reservoir 24.
- the ink jet cartridge 22 is provided as a replaceable unit.
- the cartridge 22 is insertable into the body 12 and secured thereto via suitable connection means such as threads .
- the print-head 18 comprises a cylindrical piezoelectric driver element 28 disposed in an annular print-head housing 30.
- the housing 30 forms an ejection nozzle including an ink cavity 32 in proximate relation to the driver element 28.
- the ink cavity 24 is coupled with the ink reservoir 24 via the flexible hose 26 disposed at one end of the housing 30.
- the housing 30 includes a tapered section 30t at its opposite end. As described below, the tapered section 30t is configured to smooth out the ink flow which will form a droplet.
- An orifice or ejection nozzle 34 is located at the distal end of the housing 30.
- Fig. 3A and Fig. 3B illustrate slight variations of the print-head configuration shown in Fig. 2.
- Fig. 3A is a cross section showing an ink cavity 132 defined by a generally cylindrical capillary tube 130.
- a fluid connection hose 126. is coupled with one end of the housing 130 and to an ink supply.
- An orifice 134 is disposed at the distal end of the housing.
- a transducer element 128 is disposed in surrounding relation with respect to the ink cavity 132 and is connected to terminals 136, 138.
- Fig. 3B shows a cylindrical ink cavity 232 defined by a capillary tubular housing 230.
- a flexible hose 226 is likewise coupled with one end of the tubular housing 230 and to an ink supply.
- the housing 230 is likewise tapered at its distal end to smooth out the ink flow forming a droplet and terminates to define an orifice 234.
- a transducer element 228 is disposed in surrounding relation with respect to the ink cavity 232 and is connected to terminals 236, 238.
- Fig. 4 is a simplified circuit diagram of a circuit 40 suitable for driving the piezoelectric print-head 18 shown in Fig. 2.
- the circuit 40 includes a pair of integrated circuit timers IC1 and IC2.
- timers IC1 and IC2 are type IC 555 linear timer circuits having a pin configuration that is well known.
- Timer IC1 has its terminals connected to operate in an astable mode as an oscillator. Accordingly, IC1 provides a clock signal at its output denoted by a line 42.
- a potentiometer PI is connected to the trigger level threshold input terminal of timer IC1 to vary the frequency of oscillation of timer IC1.
- the potentiometer PI may be adjusted by the control knob 15 shown in Fig. 1 to adjust the intensity of the resulting ink dispersion.
- the output signal on the line 42 is supplied through a switch SI and a resistor R4 to the base terminal of a transistor Ql.
- the collector terminal of transistor Ql is connected to one of the terminals of the piezoelectric transducer 28 on the line 36.
- the emitter terminal of the transistor Ql is connected to ground. Accordingly, when the switch SI is closed, an oscillating signal is provided to the transducer element 28.
- the ink jet droplets are preferably formed upon the application of voltage output levels of between 50 to 200 volts.
- a pair of alkaline batteries Bl and B2 are used to provide a constant voltage of about 18 V DC.
- other voltage sources such as a 5 volt or 12 volt source may be utilized with appropriate modification.
- This DC voltage is applied to the second timer IC2.
- the second timer IC2 is used as a pulse width modulator for adjusting the voltage signal provided to the transducer element 28 and thereby control the ink-jet dispersion.
- the second timer IC2 transforms the received voltage into a pulsed output signal on a line 44 having a frequency of about 400 Hz in one embodiment.
- the signal on the line 44 is applied to the primary winding of a step-up transformer TI.
- the transformer TI has a turns ratio of 1-to- 3.
- the output of the secondary winding of transformer TI is thus about 54 volts.
- This output is supplied via the line 38 to the transducer element 28.
- low capacitance cabling is preferably utilized to link the marker with the base station.
- Fig. 4 also shows a snubber capacitor Cl having one of its terminals connected to the primary winding of the transformer TI.
- the second terminal of the snubber capacitor Cl is connected through a resistor R3 to ground.
- the drop formation mechanism can be described with respect to three segments of an electrical voltage pulse applied by the control circuit 40 to the transducer element 28, as shown in Fig. 5.
- Segment I the ink in the meniscus disposed within the ink cavity or chamber 32 is initially substantially at rest.
- An electric pulse such as that shown in Fig. 5 is then applied to excite the peizo-electric transducer 28.
- a relatively short rise time in the applied voltage induces a contraction of the tubular housing 30 which results in a pressure increase within the ink chamber 32.
- the ink flows in opposite directions: toward the ejection orifice 34 which bulges out the ink at the meniscus; and, toward the ink supply line 26.
- the flexible ink hose 26, connecting the ink cavity 32 with the reservoir 24 tends to absorb the pressure wave propagation towards the reservoir. This tends to minimize pressure wave reflection of the ink, which could otherwise interfere with the droplet ejection at the orifice 34.
- the input voltage pulse has achieved its peak value, i.e., approximately 60 volts.
- the ink continues to accelerate and reaches a maximum velocity, nearly twice the velocity of the resulting droplet.
- the separation of an ink droplet from the ink in the meniscus occurs in the relatively short dwell mode during Segment II. . ..
- the input voltage is decreased.
- the resulting surface tension forces reduce the ink flow and eventually reverse the ink flow.
- the input voltage decrease causes a compression of the ink chamber 32 and a negative pressure at the orifice 34.
- the ink reverses flow from both the orifice 34 and ink supply 26 toward the center of the ink chamber 32 and the meniscus becomes concave.
- the lost ink due to the ejected droplet is refilled by capillary action in the ink chamber 32.
- the resulting upper frequency of dispersion of ink droplets is about 10 kHz.
- Fig. 6, Fig. 6A and Fig. 6B illustrate a different print-head 50 according to another embodiment of the present invention.
- a multiplicity of ejection nozzles or orifices are employed such as orifices 52a-52j shown in Fig. 6B.
- the plurality of orifices are relatively closely spaced from each other, i.e., within a few microns apart, and are arranged in a preselected bank or pattern as shown in Fig. 6B.
- each of the plurality of orifices has an associated transducer element such as element 28 shown in Fig. 2 associated therewith. This arrangement permits a pattern to be generated on a print medium upon selective actuation of the transducer elements.
- the circuit 40 shown in Fig. 4 may be employed to provide control signals to each of the ejection nozzles 52a through 52j .
- the resulting dispersion of ink to the print medium will be of a greater intensity than the pattern generated by one ejection nozzle.
- suitable control circuitry may be employed to selectively actuate one or more of the ejection orifices. This may be utilized to create random patterns on the print medium or even generation of characters or the like with appropriate modification.
- the patterns may comprise traditional symbols such as stars, squares or other geometric shapes or they may be other characters such as those that are popular with -children.
- Fig. 7 shows a simplified block diagram representation of a control circuit 53 which may be employed.
- the control circuit 53 provides output signals to selectively actuate the respective ejection nozzles in the print-head 50 shown in Fig. 6.
- This embodiment utilizes a microprocessor or CPU 54 in conjunction with appropriate circuitry to generate control signals that are applied to a plurality of piezo- driver circuits 40a through 40j .
- the driver circuits 40a through 40j may be functionally the same as circuit 40 described above in conjunction with Fig. 4.
- the CPU 54 receives digital input signals from I/O Interface circuitry 56 via a bus 58. These signals are based on user input and selection. Based on this information, the CPU 54 accesses data contained in a Character ROM 60.
- the control circuit 53 may optionally receive input signals corresponding to the horizontal and vertical positions and movement of the marking device and of the print-head 50.
- the I/O circuitry 56 may receive input signals from a track-ball or other device providing indicators of the positioning and movement of the marking device. This data is utilized by the CPU 54 and the synchronization and selection circuitry 64 to adjust the output provided to the respective driver circuits 40a through 40j .
- the control circuit 53 may receive signals from a contact switch or other suitable device located on the body 12 that provides an indication of when the body is in contact with the print medium or when the print-head 50 is in close relation with the print medium. This provides an additional safety feature that prevents unintended dispersion of ink from the marking device.
- Fig. 8 illustrates a perspective view of yet another embodiment of the present invention with portions of the marking instrument body 312 removed for clarity.
- a control circuit package 370 is designed for placement within the body 312 of the writing instrument.
- the control circuit package 370 may contain circuitry to perform the functionality of the circuit shown 40 shown in Fig. 4 or the circuit 53 shown in Fig. 7.
- Fig. 8 also shows the ink cartridge 322 located within the cavity provided within the marker body 312 in abutting relation with the control circuit package 370.
- the ink cartridge 322 is provided as a replaceable unit that includes the print- head 318, the ink reservoir 324, and a thin film battery 372 disposed in surrounding relation with respect to the ink reservoir 324. Suitable electrical contacts are provided to connect the battery 372 with the circuit elements within the control circuit package 370 and to connect the output terminals of the control circuit package 370 with the print-head 318.
- the plurality of the elements in the electrical circuit package 370 may be provided as an integrated circuit package with appropriate modification.
- the circuit package is operable with the use of a pushbutton switch 374 preferably disposed at one end of the marker body 312.
- This structure provides a very compact design although the design may tend to increase the cost of manufacture of the marker.
- Fig. 9 is yet another modification of the invention.
- a color ink jet marking device 410 is shown that comprises a print-head 418 is equipped with one or more nozzles that eject yellow, cyan, magenta and black colors . By varying the controls provided on a base station 414, the marker 410 selects an appropriate mix of the primary colors to eject to the print medium.
- FIG. 9 also illustrates an ink cartridge 422 that is separated into four quadrants containing ink reservoirs corresponding to the yellow, cyan, magenta and black colors. These reservoirs are in fluid communication with the respective ejection nozzles located on the print-head 418 in a manner described above.
- Fig. 10 illustrates a simplified block diagram representation of control circuitry suitable for providing signals to the print-head 418 in the embodiment of Fig. 9.
- a microprocessor CPU 486 in conjunction with appropriate circuitry generates voltage regulated output signals that are applied to a plurality of driver circuits 488a through 488d.
- the driver circuits 488a through 488d may be functionally the same as the circuit 40 described above in conjunction with Fig. 4.
- the CPU 486 receives digital input signals from I/O Interface circuitry 490 via a bus 492. These signals correspond to the desired color to be created on the print medium and are based on user selection of a control knob 493 or other suitable input device located on " the base station 414 (see Fig. 9) .
- the user may select desired patterns and/or characters with the use of input buttons 495.
- the CPU 486 accesses data contained in a Character ROM 494.
- the ROM 494 may include a look-up table corresponding with the selected color.
- the CPU 486 performs logical operations with data contained in the Character ROM 494 in conjunction with a Work RAM 496 and provides control data to a Color Selection and Timing circuit 498.
- This circuit 498 provides appropriate output signals to the plurality of color driver circuits 488a through 488d. In this way, the size and duration of pulses applied to the respective ejection nozzles is varied to provide a desired color.
- the ink droplets are ejected onto the print medium in very close relation with each other so that the color perceived by the user is the additive colors ejected.
- FIG. 11 illustrates a portion of a print-head 500 made in accordance with another embodiment of the. present invention.
- the print-head 500 comprises a substrate 502, a barrier layer 504, and an orifice plate 506.
- the orifice plate 506 includes an opening or nozzle 508 disposed therein.
- the nozzle 508 is positioned in spaced relation from a thermal heating element 510 such as a resistor element . This area is sometimes known as a firing chamber 512.
- the orifice plate 506 typically includes a plurality of nozzles located therein, each of which is operatively associated with a resistor.
- the orifice plate may be provided with a matrix of approximately 128 nozzles per square inches in the print-head.
- ink denoted by the numeral 514 fills an ink feed channel 516.
- the feed channel provides ink proximate to each orifice such as orifice 508.
- the channel 514 is defined by the substrate 502, the barrier layer 504, and the orifice plate 506.
- the ink forms a meniscus denoted by numeral 514m following a drop ejection.
- Each resistor such as resistor 510 is connected by an electrically conductive trace to a current source.
- the current source receives control signals from a control circuit or a computer.
- the control circuit provides appropriate signals so that current pulses are applied to selected resistors 510.
- the resistor When the current is applied to the resistor, the resistor generates heat.
- the generation of heat causes the ink in the firing chamber 512 to nucleate and expand. As a result, a droplet of ink is expelled through the nozzle 508 and onto the print medium. Ink is then drawn into the feed channel through capillary action.
- the circuitry described above in conjunction with Figs. 7 and 10 can be readily be modified in order to provide appropriate current pulses to the heater- resistors disposed in the print-head 500.
- a color ink jet marker 610 comprises a generally cylindrical marker body 612, having an approximate size and dimension as that of a conventional marker.
- the ink jet marker comprises a replaceable ink jet head 618, disposed at one end of the marker body 612.
- a replaceable ink cartridge 620 is disposed at the opposite end of the marker body 612.
- the marker body 612 is used in combination with a docking station 614.
- the marker body 612 is docked in a generally upright position within the docking station 614.
- the docking station 614 preferably charges a rechargeable power supply provided in the marker 610, among other things .
- the docking station comprises a body section 614b and a cradle section 614c, disposed at one end of the docking body 614b.
- the cradle section 614c comprises opposed tapered side walls and a bottom wall which form an opening that is adapted to receive the marker body 612.
- the cradle section is formed to retentively engage the marker body 612 when in a recharging mode of operation. That is, the color ink jet marker 610 is located within a recess formed in the cradle section 614c. In this position, a plurality of power conductors, which are slightly recessed from the outer circumference of the marker body, are matingly engaged with complementary conductors provided in the cradle section 614c.
- the marker body 612 and the cradle section further include complementary mechanical portions that further aid in the mating engagement between the electrical conductor portions of the marker body and the cradle section, respectively.
- cradle section includes a recess formed therein for receiving an end of the marker.
- the marker body 612 may include a rib portion formed therein that is adapted to interfit within a grooved portion formed in the cradle section.
- an indicator light may also be provided on the docking station 614. This arrangement may further be used to provide an additional safety feature. That is, the marker may be placed in an inoperative state when located within the cradle of the docking station. By rendering the marker 610 inoperative when seated within the cradle section, the risk of inadvertent use is reduced., i-v
- the marker body For removing the marker body ⁇ QMt from the cradle section 614c, the marker body is urged upwardly by the user of the marker. This action disengages the power conductors disposed on the marker body from the complementary conductors located on the cradle section. When disengaged, the marker is ready for use.
- the print head may be provided in a "fire-on- demand” arrangement and expel ink in a rainbow format, such as in a 6X12 array or a 4X64 array wherein each of the colors has 64 nozzles.
- The. body includes a' receptacle 616 formed therein in order to receive an oval-shaped ink activator 624.
- the ink activator 624 located at a position along the longitudinal dimension of the marker body where it may be readily engaged by the index finger of the user during a conventional writing operation, as shown in Figs. 13 and 14.
- the ink activator 624 is pressure sensitive such that it will close a master "on/off" switch for the electronics of the marker only when a predetermined pressure is applied to the activator for a fixed time interval. In this way, the marker is activated only when intended for use in marking operations.
- the marker 610 further includes a generally rectangular slider control 630, disposed proximate to the ink activator 624, for applying ink in a desired thickness.
- the slider control 630 is located within a longitudinally extending channel 632 formed in the marker body. As shown, the slider control protrudes slightly outwardly from the marker body and is further movable within the channel 632 between a spectrum of desired marker line thicknesses. Such line thicknesses are preferably denoted on the outer surface of the marker body as a plurality of spaced indicator lines 634, as shown in Figs . 13 and 14.
- the indicator lines illustrate a progressively greater line thickness. This corresponds to the line thickness dispensed by the marker. That is, when the slider control 630 is urged into the position shown in Figs. 13 and 14, the marker generates a relatively thick line. On the other hand, when the slider control is moved to the opposite end of the channel 632, the marker will generate a relatively thin line. Of course, movement of the slider control to a position between the end positions results in the generation of a marker line having a corresponding thickness .
- a replaceable color cartridge is provided.
- the ink source is preferably implemented as a generally cylindrical cartridge 620, located opposite the print head.
- the cartridge further includes two portions: a head portion 622 and a body portion 624.
- the head portion 622 is divided into a plurality of equi- spaced pie-shaped segments of varying colors such as colored segment 626.
- the colored segments extend from the face of the head portion and overlap the side thereof as shown in Figs . 15 and 16.
- the cartridge preferably is divided into quadrants that contain four primary colors, yellow, cyan, magenta and black, the number of color segments is substantially greater.
- a particular desired color is obtained through mixing the colors ejected onto the print medium. This arrangement permits the user to align a desired colored segment with a marker such as arrow 628, disposed on the outer circumference of the marker body 612.
- the outer surface of the body section 624 for the cartridge includes flattened segments such as segment 630. These flattened segments are sized to mate with complementary segments formed in a receptacle 632 for the cartridge such that, when placed within the receptacle, the cartridge fixedly disposed at a preselected orientation.
- the receptacle 632 is rotatably mounted within the marker body 612.
- the user rotates the cartridge head section 620 until a desired one of the spaced colored segments is aligned with the marker arrow 628.
- rotation of the ink cartridge causes movement of the cartridge receptacle. This movement, in turn, provides a desired input signal to the control circuitry. In response, the control circuitry generates appropriate control signals for outputting the desired color.
- the marker permits the installation of plug- in memory.
- the marker includes a generally rectangular socket 640 located on the outer circumference of the marker body 612.
- the socket 640 is sized to receive a memory integrated circuit or "stamping chip" 642, as shown in Fig. 16.
- the marker control circuit automatically performs a system reconfiguration whenever the user removes a stamping chip from the socket 640. Similarly, the system automatically reconfigures itself whenever a stamping chip is inserted into the socket 640. In this way, the user may easily install one of many stamping chips that are contemplated by the invention or remove the chip altogether without performing a reset of the marker control circuitry.
- the ink jet marker control circuitry 650 may use any type of small microprocessor based computer system such as those used in a cellular phone or personal information manager environment.
- the microprocessor or CPU 652 is connected through an address/data bus to memory 654, user interface circuitry 656, a communication interface, and ink jet driver circuitry 660, which may be similar to that described above in conjunction with Fig. 10.
- memory 654 includes the removable stamping chip memory described above as well as system memory.
- the user interface circuitry 656 receives the signals provided by the pressure sensitive ink activator button 624, the thickness control slider 630, and the ink color indicator input .
- the marker circuitry 650 uses this input information to provide appropriate output information to the ink jet driver circuitry 660. In this way, the marker provides a desired output of color droplets in a desired pattern.
- the docking station 614 may also provide data synchronization and control signals to the marker.
- data transfer and synchronization between the marker and the docking station may be accomplished through a Universal Serial Bus (USB) adapter or other suitable connection means denoted by the connection 662 in Fig. 18.
- USB Universal Serial Bus
- the docking station may perform diagnostic functions on the marker.
- the docking station may transfer additional programmatic functions to the marker as well as receive status information.
- the electrical control circuitry may further include a display located on the marker body.
- the display may provide such useful information to the user such as an icon that indicates the amount of life remaining in the battery, the type of stamping chip, if any, that is inserted into the IC receptacle and other information.
- the display may also be implemented as a segmented LED array for providing such information as alphanumeric characters.
- the type of ink utilized in conjunction with the present invention is non-toxic, washable and nonflammable.
- the ink characteristics should also provide appropriate surface tension and density, while minimizing clogging and gas bubble formation.
- a water-based ink provides an optimal surface tension comparable to the value of 76 dynes/cm obtained for water alone.
- the ink is also pH controlled in order to prevent shifting of the color of the dyes and corrosion of the print-head components.
- the marking device may be provided as a peripheral device which is connectable to a personal computer with the inclusion of appropriate interface circuitry and software. Accordingly, the invention is intended to be covered by the appended claims, which are made part of this disclosure.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60103892T DE60103892T2 (en) | 2000-05-16 | 2001-04-17 | An ink jet |
MXPA02011301A MXPA02011301A (en) | 2000-05-16 | 2001-04-17 | Ink jet marker. |
EP01929062A EP1284864B1 (en) | 2000-05-16 | 2001-04-17 | Ink jet marker |
AU2001255848A AU2001255848A1 (en) | 2000-05-16 | 2001-04-17 | Ink jet marker |
AT01929062T ATE269219T1 (en) | 2000-05-16 | 2001-04-17 | INK JET MARKER |
CA002409419A CA2409419A1 (en) | 2000-05-16 | 2001-04-17 | Ink jet marker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/572,663 | 2000-05-16 | ||
US09/572,663 US6394598B1 (en) | 1997-04-28 | 2000-05-16 | Ink jet marker |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001087629A1 true WO2001087629A1 (en) | 2001-11-22 |
Family
ID=24288820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/040537 WO2001087629A1 (en) | 2000-05-16 | 2001-04-17 | Ink jet marker |
Country Status (9)
Country | Link |
---|---|
US (2) | US6394598B1 (en) |
EP (1) | EP1284864B1 (en) |
AT (1) | ATE269219T1 (en) |
AU (1) | AU2001255848A1 (en) |
CA (1) | CA2409419A1 (en) |
DE (1) | DE60103892T2 (en) |
ES (1) | ES2218410T3 (en) |
MX (1) | MXPA02011301A (en) |
WO (1) | WO2001087629A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008034018A2 (en) * | 2006-09-14 | 2008-03-20 | Hewlett-Packard Development Company, L.P. | Filling, identifying, validating, and servicing tip for fluid-ejection device |
WO2008034015A3 (en) * | 2006-09-14 | 2008-05-08 | Hewlett Packard Development Co | Handheld and/or mountable fluid-ejection device receptive to tip containing fluid and fluid-ejection mechanism |
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WO2008034018A2 (en) * | 2006-09-14 | 2008-03-20 | Hewlett-Packard Development Company, L.P. | Filling, identifying, validating, and servicing tip for fluid-ejection device |
WO2008034015A3 (en) * | 2006-09-14 | 2008-05-08 | Hewlett Packard Development Co | Handheld and/or mountable fluid-ejection device receptive to tip containing fluid and fluid-ejection mechanism |
WO2008034018A3 (en) * | 2006-09-14 | 2008-07-10 | Hewlett Packard Development Co | Filling, identifying, validating, and servicing tip for fluid-ejection device |
US7578591B2 (en) | 2006-09-14 | 2009-08-25 | Hewlett-Packard Development Company, L.P. | Filing, identifying, validating, and servicing tip for fluid-ejection device |
US7935317B2 (en) | 2006-09-14 | 2011-05-03 | Hewlett-Packard Development Company, L.P. | Handheld and/or mountable fluid-ejection device receptive to tip containing fluid and fluid-ejection mechanism |
WO2019193169A1 (en) * | 2018-04-05 | 2019-10-10 | SOCIéTé BIC | Printing device and composition comprising magnetic color changeable microcapsules |
US11633951B2 (en) | 2018-04-05 | 2023-04-25 | SOCIéTé BIC | Printing device and composition comprising magnetic-color-changeable microcapsules |
Also Published As
Publication number | Publication date |
---|---|
US20020033871A1 (en) | 2002-03-21 |
MXPA02011301A (en) | 2003-06-06 |
DE60103892D1 (en) | 2004-07-22 |
ES2218410T3 (en) | 2004-11-16 |
ATE269219T1 (en) | 2004-07-15 |
DE60103892T2 (en) | 2005-06-30 |
EP1284864A1 (en) | 2003-02-26 |
AU2001255848A1 (en) | 2001-11-26 |
CA2409419A1 (en) | 2001-11-22 |
EP1284864B1 (en) | 2004-06-16 |
US6394598B1 (en) | 2002-05-28 |
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