EP0162930B1 - Image-receiving material - Google Patents

Image-receiving material Download PDF

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Publication number
EP0162930B1
EP0162930B1 EP19840904178 EP84904178A EP0162930B1 EP 0162930 B1 EP0162930 B1 EP 0162930B1 EP 19840904178 EP19840904178 EP 19840904178 EP 84904178 A EP84904178 A EP 84904178A EP 0162930 B1 EP0162930 B1 EP 0162930B1
Authority
EP
European Patent Office
Prior art keywords
color
silicon dioxide
image receptor
dye
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.)
Expired
Application number
EP19840904178
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0162930A4 (en
EP0162930A1 (en
Inventor
Yuji Takashima
Keiichi Yubakami
Tokihiko Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0162930A1 publication Critical patent/EP0162930A1/en
Publication of EP0162930A4 publication Critical patent/EP0162930A4/en
Application granted granted Critical
Publication of EP0162930B1 publication Critical patent/EP0162930B1/en
Expired legal-status Critical Current

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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

  • the invention relates to an image receptor having a structure in which a color forming layer causing color development of a sublimable dye which develops color when adsorbed by an electron-acceptant material is provided on a substrate.
  • 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.
  • Another type of recording is inkjet recording, and an image receptor for ink jet recording is disclosed in DE-A-3 237 381.
  • droplets of a liquid recording ink are applied to the image receptor in accordance with a desired recording pattern.
  • the recording surface of the image receptor has coated thereon a porous layer exhibiting a high absorption rate for the recording ink.
  • Various materials may be selected for this absorptive layer and a binder used therewith, these materials including silicon dioxide particles of a certain size and styrene-butadiene copolymer as the binder.
  • the object of this invention is to provide an image receptor of the above-referenced type used for image recording employing only a sublimable dye material itself as inking material, in which the color-forming layer containing color developer is improved in heat resistance and transparency.
  • said color forming layer contains both silicon dioxide as main color developer of said sublimable dye and a styrene-butadiene copolymer as a binder of said silicon dioxide.
  • the color-forming layer has the function to let the dye develop color in a molecular state and uniformly. It is of improved gas permeability for the subliming dye and of improved heat resistance. Thereby a clear and highly transparent color image can be obtained.
  • 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 silicon dioxide 2 is carried on a substrate 1 as illustrated in the drawing.
  • Silicon dioxide 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.
  • silicon dioxide used in this invention there can be employed amorphous, glassy or colloidal silicon dioxide.
  • colloidal silicon dioxide 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 silicon dioxide finely dispersed in a binder on substrate 1 by a usual means such as bar coater.
  • the particle size of silicon dioxide is preferably not greater than 0.1 micron.
  • the binder is preferably one which is strong in binding force, transparent and also excellent in silicon dioxide dispersability.
  • a combination of styrene-butadiene copolymer and colloidal silicon dioxide 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 silicon dioxide.
  • the amount of the binder used is not greater than 30% by weight based on silicon dioxide.
  • the coating weight of the color forming layer for effecting sufficient color development of the dye is preferably 1-10 g/m 2 although is it variable depending on the type of the dye used.
  • a dispersant when dispersing silicon dioxide 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.
  • an electron acceptant material such as a known organic or inorganic acid may be used jointly with silicon dioxide as a color developing assistant.
  • 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 ("PT-52Y” produced by Mitsubishi Kasei Kogyo KK), a mangenta basic dye (C.I. Basic Red 9) and a magenta subliming color former (7'-diethylamino-1,3,3,5-tetramethyl-indolino- benzospiropyran) 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 Comparative Example and said color sheets were placed one upon the other and heated under the conditions of 180°C, 5 seconds and 1 kg/cm 2 , 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 silicon dioxide with excellent transparency is used as color developer. Therefore, there is no possiblity 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Color Printing (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
EP19840904178 1983-11-24 1984-11-22 Image-receiving material Expired EP0162930B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58221047A JPS60112484A (ja) 1983-11-24 1983-11-24 像受容体
JP221047/83 1983-11-24

Publications (3)

Publication Number Publication Date
EP0162930A1 EP0162930A1 (en) 1985-12-04
EP0162930A4 EP0162930A4 (en) 1987-10-27
EP0162930B1 true 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 (enrdf_load_stackoverflow)
JP (1) JPS60112484A (enrdf_load_stackoverflow)
DE (1) DE3483041D1 (enrdf_load_stackoverflow)
WO (1) WO1985002375A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2622675B2 (ja) * 1985-10-24 1997-06-18 大日本印刷株式会社 被熱転写シート
JP2540494B2 (ja) * 1986-01-30 1996-10-02 大日本印刷株式会社 透過原稿作成用被熱転写シ−ト
JP2713568B2 (ja) * 1987-01-20 1998-02-16 ダイニツク株式会社 透明記録用フイルム
CA2051206A1 (en) * 1990-11-21 1992-05-22 John F. Oliver Carbonless paper for ink jet printing
WO2000041889A1 (en) * 1999-01-12 2000-07-20 Imperial Chemical Industries Plc Receiver medium for ink jet printing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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
JPS5139567B2 (enrdf_load_stackoverflow) * 1973-03-01 1976-10-28
JPS5821597B2 (ja) * 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 カンアツフクシヤシヨウハツシヨクザイ
US4089547A (en) * 1976-07-21 1978-05-16 Reprographic Materials, Inc. Manifold receptor sheets and processes therefor
JPS5348751A (en) * 1976-10-16 1978-05-02 Kanzaki Paper Mfg Co Ltd Heat sensitive recording member
JPS5816885A (ja) * 1981-07-23 1983-01-31 Mizusawa Ind Chem Ltd 新規な粘土鉱物系感圧複写紙用発色剤組成物及びこれを含有する水性塗液組成物
JPS58110287A (ja) * 1981-12-24 1983-06-30 Mitsubishi Paper Mills Ltd 記録用シ−ト
US4481244A (en) * 1982-02-03 1984-11-06 Canon Kabushiki Kaisha Material used to bear writing or printing
JPS58148794A (ja) * 1982-03-02 1983-09-03 Jujo Paper Co Ltd 熱記録シ−ト

Also Published As

Publication number Publication date
DE3483041D1 (de) 1990-09-27
JPH0433633B2 (enrdf_load_stackoverflow) 1992-06-03
EP0162930A4 (en) 1987-10-27
JPS60112484A (ja) 1985-06-18
WO1985002375A1 (en) 1985-06-06
EP0162930A1 (en) 1985-12-04

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