EP0162930A1 - Image-receiving material - Google Patents
Image-receiving material Download PDFInfo
- Publication number
- EP0162930A1 EP0162930A1 EP84904178A EP84904178A EP0162930A1 EP 0162930 A1 EP0162930 A1 EP 0162930A1 EP 84904178 A EP84904178 A EP 84904178A EP 84904178 A EP84904178 A EP 84904178A EP 0162930 A1 EP0162930 A1 EP 0162930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- color
- image receptor
- dye
- silica
- image
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/132—Chemical colour-forming components; Additives or binders therefor
- B41M5/155—Colour-developing components, e.g. acidic compounds; Additives or binders therefor; Layers containing such colour-developing components, additives or binders
- B41M5/1555—Inorganic mineral developers, e.g. clays
Definitions
- This invention relates to an image receptor used for image recording such as electrophotography or printer. More specifically, the invention relates to an image receptor useful for image recording using only a dye material itself as inking material.
- a variety of image recording methods using only a dye material itself as inking material have been proposed hitherto.
- a one-shot electrophotographic method using light transmitting particles containing a subliming color former as disclosed in Japanese Patent Publication No. 49307/80; a sublimation transfer method in which a color sheet prepared by coating a condenser paper or the like with a subliming dye is heated by a heating element so that the sublimed dye develops color on an image receptor; and a gas jet recording method disclosed in Japanese Patent Publication No. 2020/81 in which gas of a subliming dye is electrically injected and controlled to obtain a dye image on an image receptor.
- Such bottom paper had the problem of reduced color purity of the dye image for such reasons that (1) activated clay is tinted in light brown, and (2) the color-forming layer becomes opaque because of poor transparency of activated clay. Therefore, said bottom paper was not suitable for color recording especially.
- the object of this invention is to provide an image receptor used for image recording employing only a dye material itself as inking material, in which the color-forming layer containing color developer is transparent.
- the image receptor of this invention is of a structure in which a color forming layer principally composed of silica is provided on a substrate, and said color forming layer has the function to let the dye develop color in a molecular state and uniformly.
- the drawing is a schematic sectional view showing an embodiment of image receptor in accordance with this invention.
- a color-forming layer 3 principally composed of silica 2 is carried on a substrate 1 as illustrated in the drawing.
- Silica 2 is used as color developer and has excellent transparency. It is colorless and suffers from no thermal yellowing because of heat resistance, making it possible to obtain a dye image with high color purity.
- silica used in this invention there can be employed silicates represented by xM 2 I O ⁇ ySiO 2 such as xNa 2 O-ySiO 2 , xA1 2 0 3 .ySi0 2 and xMgO ⁇ YSiO 2 , silicic acids represented by xH 2 O ⁇ ySiO 2 , and amorphous, glassy or colloidal silicon dioxide.
- colloidal silica with a pH of 6 or below is especially excellent as it has the excellent ability to cause color development of dye and that the color forming layer can be easily made transparent.
- substrate 1 various types of substrate material can be applied according to the purpose of use. For instance, fine-quality paper or art paper with high whiteness is suited for reflective pictures such as documents. Plastic sheet with excellent transparency and heat resistance such as vinylon, cellophane, acetyl-cellulose or the like is suited for transmitting pictures such as slides.
- Color forming layer 3 can be made transparent by coating silica finely dispersed in a binder on substrate 1 by a usual means such as bar coater.
- the particle size of silica is preferably not greater than 0.1 micron.
- the binder is preferably one which is strong in binding force, transparent and also excellent in silica dispersability.
- styrene-butadiene copolymer, ethyl cellulose, acrylic resin or the like is preferred.
- a combination of styrene-butadiene copolymer and colloidal silica is especially suited for the applications where the image receptor is heated since such combination is hardened and improved in heat resistance when heated.
- the color forming layer porous so that the dye becomes more easily absorbed by silica.
- the amount of the binder used is not greater than 30% by weight based on silica.
- the coating weight of the color forming layer for effecting sufficient color development of the dye is preferably 1 - 10 g/m although it is variable depending on the type of the dye used.
- This color forming layer solution was coated on a sheet of art paper to a coating weight (after drying) of 6 g/m 2 to obtain an image receptor A for reflective picture.
- the color forming layer solution of Example 1 was coated on a vinylon sheet to a coating weight of 6 g/m 2 to obtain an image receptor B for transmitting picture. Transmittance of the image receptor was 90%.
- a mixture of the following formulation was sufficiently dispersed by an attritor to prepare a color forming layer solution.
- This color forming layer solution was coated on a fine-quality paper to a coating weight (after drying) of 8 g/m 2 to obtain an image receptor C for reflective picture.
- a yellow disperse dye ("P T -52 Y " produced by Mitsubishi Kasei Kogyo KK), a magenta basic dye (C.I. Basic Red 9) and a magenta subliming color former (7'-diethylamino-1,3,3,5-tetramethyl-indolinobenzospiropyran) were coated on a 15 micron thick condenser paper by using ethyl cellulose as binder to prepare three types of color sheets D, E and F.
- Examples and said color sheets were placed one upon the other and heated under the conditions of 180°C, 5 seconds and 1 kg/cm2, whereby the distinct yellow and magenta color images such as shown in Table 1 were obtained on the image receptor.
- the numerical figures in the table indicate color density.
- Color sheet F was superposed on the yellow color images obtained by using color sheet D in Experiment 1, and heated under the same conditions as Experiment 1, whereby the distinct red color images such as shown in Table 2 were obtained.
- the image receptor of this invention can make the color forming layer transparent as silica with excellent transparency is used as color developer. Therefore, there is no possibility that the dye which developed color below the color forming layer be concealed by the color developer thereabove to reduce the developed color density, and the whole color forming layer becomes a colored transparent body, so that a dye image with high developed color density can be obtained, enabling realization of high-quality pictures by electrophotography or printers.
Abstract
Description
- This invention relates to an image receptor used for image recording such as electrophotography or printer. More specifically, the invention relates to an image receptor useful for image recording using only a dye material itself as inking material.
- A variety of image recording methods using only a dye material itself as inking material have been proposed hitherto. For instance, there are known a one-shot electrophotographic method using light transmitting particles containing a subliming color former as disclosed in Japanese Patent Publication No. 49307/80; a sublimation transfer method in which a color sheet prepared by coating a condenser paper or the like with a subliming dye is heated by a heating element so that the sublimed dye develops color on an image receptor; and a gas jet recording method disclosed in Japanese Patent Publication No. 2020/81 in which gas of a subliming dye is electrically injected and controlled to obtain a dye image on an image receptor.
- In any of the above-described methods, it is necessary to let the dye develop color in a molecular state and uniformly on an image receptor for obtaining a clear dye image. For this purpose, there is usually used an image receptor carrying a dye developer. In the prior art, bottom paper for pressure-sensitive recording using activated clay as color developer has been used for said image receptor.
- Such bottom paper, however, had the problem of reduced color purity of the dye image for such reasons that (1) activated clay is tinted in light brown, and (2) the color-forming layer becomes opaque because of poor transparency of activated clay. Therefore, said bottom paper was not suitable for color recording especially.
- The object of this invention is to provide an image receptor used for image recording employing only a dye material itself as inking material, in which the color-forming layer containing color developer is transparent.
- The image receptor of this invention is of a structure in which a color forming layer principally composed of silica is provided on a substrate, and said color forming layer has the function to let the dye develop color in a molecular state and uniformly.
- The drawing is a schematic sectional view showing an embodiment of image receptor in accordance with this invention.
- In an embodiment of image receptor in accordance with this invention, a color-forming
layer 3 principally composed ofsilica 2 is carried on asubstrate 1 as illustrated in the drawing. - Silica 2 is used as color developer and has excellent transparency. It is colorless and suffers from no thermal yellowing because of heat resistance, making it possible to obtain a dye image with high color purity. As silica used in this invention, there can be employed silicates represented by xM2 IO·ySiO2 such as xNa2O-ySiO2, xA1203.ySi02 and xMgO·YSiO2, silicic acids represented by xH2O·ySiO2, and amorphous, glassy or colloidal silicon dioxide. Among them, colloidal silica with a pH of 6 or below is especially excellent as it has the excellent ability to cause color development of dye and that the color forming layer can be easily made transparent.
- For
substrate 1, various types of substrate material can be applied according to the purpose of use. For instance, fine-quality paper or art paper with high whiteness is suited for reflective pictures such as documents. Plastic sheet with excellent transparency and heat resistance such as vinylon, cellophane, acetyl-cellulose or the like is suited for transmitting pictures such as slides. -
Color forming layer 3 can be made transparent by coating silica finely dispersed in a binder onsubstrate 1 by a usual means such as bar coater. In this case, the particle size of silica is preferably not greater than 0.1 micron. - The binder is preferably one which is strong in binding force, transparent and also excellent in silica dispersability. For instance, styrene-butadiene copolymer, ethyl cellulose, acrylic resin or the like is preferred. A combination of styrene-butadiene copolymer and colloidal silica is especially suited for the applications where the image receptor is heated since such combination is hardened and improved in heat resistance when heated.
- For attaining better color developing efficiency of the dye, it is preferred to make the color forming layer porous so that the dye becomes more easily absorbed by silica. For this purpose, it is desirable that the amount of the binder used is not greater than 30% by weight based on silica. The coating weight of the color forming layer for effecting sufficient color development of the dye is preferably 1 - 10 g/m although it is variable depending on the type of the dye used.
- It is of course possible, where necessary, to add a dispersant when dispersing silica in binder or to add an anti-oxidant or a quencher to the color forming layer for the purpose of preventing color fading of the dye. Further, an electron acceptant material such as a known organic or inorganic acid may be used jointly with silica as a color developing assistant.
- The following materials were well stirred and mixed by a mixer to form a color forming layer solution.
- Color developer:
- Silica (colloidal silica "Snowtex O"
- produced by Nissan Kagaku KK
- (pH: 2-4, solids: 20 wt%)) ... 100 parts by weight
- Binder:
- Styrene-butadiene copolymer
- ("Danbond" produced by Nippon
- Zeon KK (solids: 40 wt%)) ..... 5 parts by weight
- This color forming layer solution was coated on a sheet of art paper to a coating weight (after drying) of 6 g/m2 to obtain an image receptor A for reflective picture.
- The color forming layer solution of Example 1 was coated on a vinylon sheet to a coating weight of 6 g/m2 to obtain an image receptor B for transmitting picture. Transmittance of the image receptor was 90%.
- A mixture of the following formulation was sufficiently dispersed by an attritor to prepare a color forming layer solution.
- Color developer:
- Silica ("Finesil T-32" (pH 6)
- produced by Tokuyama Soda KK) .. 100 parts by
- weight
- Binder:
- Ethyl cellulose ............ 10 parts by weight Solvent:
- Methylene chloride ........ 100 parts by weight
- This color forming layer solution was coated on a fine-quality paper to a coating weight (after drying) of 8 g/m2 to obtain an image receptor C for reflective picture.
- A yellow disperse dye ("PT-52Y" produced by Mitsubishi Kasei Kogyo KK), a magenta basic dye (C.I. Basic Red 9) and a magenta subliming color former (7'-diethylamino-1,3,3,5-tetramethyl-indolinobenzospiropyran) were coated on a 15 micron thick condenser paper by using ethyl cellulose as binder to prepare three types of color sheets D, E and F. The image receptor obtained in the
- Examples and said color sheets were placed one upon the other and heated under the conditions of 180°C, 5 seconds and 1 kg/cm2, whereby the distinct yellow and magenta color images such as shown in Table 1 were obtained on the image receptor. The numerical figures in the table indicate color density.
-
- The image receptor of this invention can make the color forming layer transparent as silica with excellent transparency is used as color developer. Therefore, there is no possibility that the dye which developed color below the color forming layer be concealed by the color developer thereabove to reduce the developed color density, and the whole color forming layer becomes a colored transparent body, so that a dye image with high developed color density can be obtained, enabling realization of high-quality pictures by electrophotography or printers.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP221047/83 | 1983-11-24 | ||
JP58221047A JPS60112484A (en) | 1983-11-24 | 1983-11-24 | Image-receiving material |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0162930A1 true EP0162930A1 (en) | 1985-12-04 |
EP0162930A4 EP0162930A4 (en) | 1987-10-27 |
EP0162930B1 EP0162930B1 (en) | 1990-08-22 |
Family
ID=16760655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19840904178 Expired EP0162930B1 (en) | 1983-11-24 | 1984-11-22 | Image-receiving material |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0162930B1 (en) |
JP (1) | JPS60112484A (en) |
DE (1) | DE3483041D1 (en) |
WO (1) | WO1985002375A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487349A1 (en) * | 1990-11-21 | 1992-05-27 | Xerox Corporation | Carbonless paper for ink jet printing |
WO2000041889A1 (en) * | 1999-01-12 | 2000-07-20 | Imperial Chemical Industries Plc | Receiver medium for ink jet printing |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2622675B2 (en) * | 1985-10-24 | 1997-06-18 | 大日本印刷株式会社 | Heat transfer sheet |
JP2540494B2 (en) * | 1986-01-30 | 1996-10-02 | 大日本印刷株式会社 | Heat transfer sheet for making transparent originals |
JP2713568B2 (en) * | 1987-01-20 | 1998-02-16 | ダイニツク株式会社 | Transparent recording film |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870435A (en) * | 1969-07-09 | 1975-03-11 | Pilot Pen Co Ltd | Visual recording method and means |
US4089547A (en) * | 1976-07-21 | 1978-05-16 | Reprographic Materials, Inc. | Manifold receptor sheets and processes therefor |
JPS5551583A (en) * | 1978-10-09 | 1980-04-15 | Ricoh Co Ltd | Ink-jet recording paper |
JPS56148583A (en) * | 1980-04-21 | 1981-11-18 | Canon Inc | Recording material |
JPS56148586A (en) * | 1980-04-21 | 1981-11-18 | Canon Inc | Recording material |
JPS57157786A (en) * | 1981-03-24 | 1982-09-29 | Mitsubishi Paper Mills Ltd | Recording paper for ink jet printer |
JPS5816884A (en) * | 1981-07-23 | 1983-01-31 | Canon Inc | Recording medium |
JPS5872495A (en) * | 1981-10-27 | 1983-04-30 | Jujo Paper Co Ltd | Ink jet recording paper |
JPS5894491A (en) * | 1981-12-01 | 1983-06-04 | Mitsubishi Paper Mills Ltd | Ink jet recording sheet |
DE3237381A1 (en) * | 1981-12-24 | 1983-07-14 | Mitsubishi Paper Mills, Ltd., Tokyo | INK JET RECORDING SHEET |
JPS58119888A (en) * | 1982-01-12 | 1983-07-16 | Canon Inc | Manufacture of recording material |
DE3303427A1 (en) * | 1982-02-03 | 1983-08-11 | Canon K.K., Tokyo | MATERIAL TO BE USED AS WRITING AND PRINTING MEDIA |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5139567B2 (en) * | 1973-03-01 | 1976-10-28 | ||
JPS5821597B2 (en) * | 1975-09-08 | 1983-05-02 | ミズサワカガクコウギヨウ カブシキガイシヤ | Kanatsu Fukushi Palm |
JPS5348751A (en) * | 1976-10-16 | 1978-05-02 | Kanzaki Paper Mfg Co Ltd | Heat sensitive recording member |
JPS5816885A (en) * | 1981-07-23 | 1983-01-31 | Mizusawa Ind Chem Ltd | Coloring composition for new clay mineral-based pressure-sensitive coplying paper and water paint composition therewith |
JPS58148794A (en) * | 1982-03-02 | 1983-09-03 | Jujo Paper Co Ltd | Thermal recording sheet |
-
1983
- 1983-11-24 JP JP58221047A patent/JPS60112484A/en active Granted
-
1984
- 1984-11-22 EP EP19840904178 patent/EP0162930B1/en not_active Expired
- 1984-11-22 DE DE8484904178T patent/DE3483041D1/en not_active Expired - Lifetime
- 1984-11-22 WO PCT/JP1984/000559 patent/WO1985002375A1/en active IP Right Grant
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870435A (en) * | 1969-07-09 | 1975-03-11 | Pilot Pen Co Ltd | Visual recording method and means |
US4089547A (en) * | 1976-07-21 | 1978-05-16 | Reprographic Materials, Inc. | Manifold receptor sheets and processes therefor |
JPS5551583A (en) * | 1978-10-09 | 1980-04-15 | Ricoh Co Ltd | Ink-jet recording paper |
JPS56148583A (en) * | 1980-04-21 | 1981-11-18 | Canon Inc | Recording material |
JPS56148586A (en) * | 1980-04-21 | 1981-11-18 | Canon Inc | Recording material |
JPS57157786A (en) * | 1981-03-24 | 1982-09-29 | Mitsubishi Paper Mills Ltd | Recording paper for ink jet printer |
JPS5816884A (en) * | 1981-07-23 | 1983-01-31 | Canon Inc | Recording medium |
JPS5872495A (en) * | 1981-10-27 | 1983-04-30 | Jujo Paper Co Ltd | Ink jet recording paper |
JPS5894491A (en) * | 1981-12-01 | 1983-06-04 | Mitsubishi Paper Mills Ltd | Ink jet recording sheet |
DE3237381A1 (en) * | 1981-12-24 | 1983-07-14 | Mitsubishi Paper Mills, Ltd., Tokyo | INK JET RECORDING SHEET |
JPS58119888A (en) * | 1982-01-12 | 1983-07-16 | Canon Inc | Manufacture of recording material |
DE3303427A1 (en) * | 1982-02-03 | 1983-08-11 | Canon K.K., Tokyo | MATERIAL TO BE USED AS WRITING AND PRINTING MEDIA |
Non-Patent Citations (9)
Title |
---|
CHEMICAL ABSTRACTS, vol. 96, no. 24, June 1982, page 606, abstract no. 208425g, Columbus, Ohio, US; & JP - A - 56 148 583 (CANON K.K.) 18-11-1981 * |
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 94 (M-19)[576], 8th July 1980; & JP - A - 55 051 583 (RICOH K.K.) 15-04-1980 * |
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 263 (M-181)[1141], 22nd December 1982; & JP - A - 57 157 786 (MITSUBISHI SEISHI K.K.) 29-09-1982 * |
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 33 (M-114)[911], 27th February 1982; & JP - A - 56 148 586 (CANON K.K.) 18-11-1981 * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 165 (M-230)[1310], 20th July 1983; & JP - A - 58 072 495 (JIYUUJIYOU SEISHI K.K.) 30-04-1983 * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 193 (M-238)[1338], 24th August 1983; & JP - A - 58 094 491 (MITSUBISHI SEISHI K.K.) 04-06-1983 * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 227 (M-248)[1372], 7th October 1983; & JP - A - 58 119 888 (CANON K.K.) 16-07-1983 * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 92 (M-208)[1237], 16th April 1983; & JP - A - 58 016 884 (CANON K.K.) 31-01-1983 * |
See also references of WO8502375A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487349A1 (en) * | 1990-11-21 | 1992-05-27 | Xerox Corporation | Carbonless paper for ink jet printing |
WO2000041889A1 (en) * | 1999-01-12 | 2000-07-20 | Imperial Chemical Industries Plc | Receiver medium for ink jet printing |
Also Published As
Publication number | Publication date |
---|---|
WO1985002375A1 (en) | 1985-06-06 |
JPH0433633B2 (en) | 1992-06-03 |
DE3483041D1 (en) | 1990-09-27 |
JPS60112484A (en) | 1985-06-18 |
EP0162930A4 (en) | 1987-10-27 |
EP0162930B1 (en) | 1990-08-22 |
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