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US4165741A
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Heat-sensitive recording materials and recording process of using the same
Assignee: Fujifilm Graphic Systems Co Ltd
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Filing: 1978-06-30
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Granted: 1979-08-28
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Expires: 1998-06-30
Abstract
Abstract Heat-sensitive recording materials having a recording layer comprising a soluble heat-sensitive organic high molecular weight compound which is folded to show a granular state on a support, and a recording process for obtaining images which comprises imagewise applying heat to the recording layer to insolubilize the high molecular weight compound and removing by dissolving the portion of the recording layer where the high molecular weight compound is not insolubilized.
Inventors
- 👤 Eiichi Inoue
- 👤 Taiji Nose
- 👤 Masakazu Inaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:46
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B41M5/368; B41M5/20; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/165; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/24909; Y10T428/25; Y10T428/254; Y10T428/256; Y10T428/257
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
140 words
A heat-sensitive recording material comprising a support and having thereon a recording layer comprising, as the heat recording medium, a soluble heat-sensitive organic high molecular weight compound having molecular weight between about 3000 and 3,000,000, which is folded to show a granular state on the support, wherein said high molecular weight compound is selected from the group consisting of an isobutylene/maleic acid anhydride copolymer or ester or salt thereof; a styrene/maleic acid anhydride copolymer; a styrene/crotonic acid copolymer; a styrene/sulfonic acid copolymer; a vinyl acetate/maleic acid anhydride copolymer; a vinyl acetate/crotonic acid copolymer; a vinyl acetate/acrylic acid copolymer; a vinyl alcohol/maleic acid anhydride copolymer; or a water soluble polyethyleneimine represented by the following formula (IV): ##STR5## wherein x an y each is a positive integer, and the ratio of primary, secondary and tertiary nitrogen atoms in said imine is (0.1-2):(0.2-3):(0.1-2).
Claim 2
Dependent Claim
140 words
A heat-sensitive recording material comprising a support and having thereon a recording layer comprising, as the heat recording medium, a soluble heat-sensitive organic high molecular weight compound having molecular weight between about 3000 and 3,000,000, which is folded to show a granular state on the support, wherein said high molecular weight compound is selected from the group consisting of an isobutylene/maleic acid anhydride copolymer or ester or salt thereof; a styrene/maleic acid anhydride copolymer; a styrene/crotonic acid copolymer; a styrene/sulfonic acid copolymer; a vinyl acetate/maleic acid anhydride copolymer; a vinyl acetate/crotonic acid copolymer; a vinyl acetate/acrylic acid copolymer; a vinyl alcohol/maleic acid anhydride copolymer; or a water soluble polyethyleneimine represented by the following formula (IV): ##STR5## wherein x an y each is a positive integer, and the ratio of primary, secondary and tertiary nitrogen atoms in said imine is (0.1-2):(0.2-3):(0.1-2).
Claim 3
Dependent Claim
30 words
The heat-sensitive recording material as set forth in claim 1, wherein the heat-sensitive high molecular weight compound is an isobutylene/maleic acid anhydride copolymer or an ester or a salt thereof.
Claim 4
Dependent Claim
32 words
The heat-sensitive recording material as set forth in claim 1, wherein the heat-sensitive high molecular weight compound is a styrene/maleic acid anhydride copolymer, a styrene/crotonic acid copolymer or a styrene/sulfonic acid copolymer.
Claim 5
Dependent Claim
41 words
The heat-sensitive recording material as set forth in claim 1, wherein the heat-sensitive high molecular weight compound is a vinyl acetate/maleic acid anhydride copolymer, a vinyl acetate/crotonic acid copolymer, a vinyl acetate/acrylic acid copolymer or a vinyl alcohol/maleic acid anhydride copolymer.
Claim 6
Dependent Claim
53 words
The heat-sensitive recording material as set forth in claim 1, wherein the heat-sensitive high molecular weight compound is a water soluble polyethyleneimine represented by the following formula (IV): ##STR6## wherein x and y each is a positive integer, and the ratio of primary, secondary and tertiary nitrogen atoms in said imine is (0.1-2):(0.2-3):(0.1-2).
Claim 7
Dependent Claim
19 words
The heat-sensitive recording material as set forth in claim 1, additionally including a protective layer on the recording layer.
Claim 8
Dependent Claim
16 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer is dyed.
Claim 9
Dependent Claim
18 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer contains a film-forming compound.
Claim 10
Dependent Claim
27 words
The heat-sensitive recording material as set forth in claim 8, wherein the film-forming compound is selected from the group consisting of gelatin, glue, casein and polyvinyl alcohol.
Claim 11
Dependent Claim
34 words
The heat-sensitive recording material as set forth in claim 8, wherein the amount of the film-forming compound in the recording layer is about 0.1 to about 10 wt% based on the recording layer composition.
Claim 12
Dependent Claim
25 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer contains a material which absorbs light and converts such into heat.
Claim 13
Dependent Claim
35 words
The heat-sensitive recording material as set forth in claim 11, wherein the material which absorbs light and converts such into heat is selected from the group consisting of an organic pigment and an inorganic pigment.
Claim 14
Dependent Claim
37 words
The heat-sensitive recording material as set forth in claim 11, wherein the amount of the material which absorbs light and converts such into heat is about 5 to about 50 wt% based on the recording layer composition.
Claim 15
Dependent Claim
39 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer contains particles of a dielectric material having a dielectric constant of above about 2 and a dielectric loss tangent of above about 1×10 -4 .
Claim 16
Dependent Claim
45 words
The heat-sensitive recording material as set forth in claim 14, wherein the dielectric material is selected from the group consisting of titanium oxide, zinc oxide, aluminum oxide, magnesium oxide, calcium oxide, barium titanate, iron titanate, a phenol resin, a melamine resin and an aniline resin.
Claim 17
Dependent Claim
34 words
The heat-sensitive recording material as set forth in claim 14, wherein the amount of the dielectric material in the recording layer is about 1 to about 50 wt% based on the recording layer composition.
Claim 18
Dependent Claim
20 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer contains particles of an electroconductive material.
Claim 19
Dependent Claim
30 words
The heat-sensitive recording material as set forth in claim 17, wherein an amount of the electroconductive material is about 1 to about 50 wt% based on the recording layer composition.
Claim 20
Dependent Claim
23 words
The heat-sensitive recording material as set forth in claim 17, wherein the electroconductive material has an electric resistance of below about 1 Ω/cm.
Claim 21
Dependent Claim
30 words
The heat-sensitive recording material as set forth in claim 19, wherein the electroconductive material is selected from the group consisting of carbon black, graphite, aluminum, zinc, copper, magnesium and silver.
Claim 22
Dependent Claim
61 words
The heat-sensitive recording material as set forth in claim 1, wherein the recording layer contains at least one low molecular weight compound having a boiling point of above about 100° C. selected from the group consisting of an acid amide, a thioacid amide, an imide, an oxycarboxylic acid and a salt thereof, a polyhydric alcohol and a nitrogen containing cyclic compound.
Claim 23
Dependent Claim
42 words
The heat-sensitive recording material as set forth in claim 21, wherein the recording layer contains at least one compound selected from the group consisting of acetamide, acrylamide, nicotinamide, urea, ε-caprolactam, glucose, citric acid, sodium gluconate, sodium succinate, ethylene glycol, glycerin and hexamethylenetetramine.
Claim 24
Dependent Claim
36 words
The heat-sensitive recording material as set forth in claim 21, wherein the amount of the low molecular weight compound in the recording layer is about 0.2 to about 1.2 wt% based on the recording layer composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-27 | 1983-02-26 | 1983-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-27 | 1987-02-26 | 1987-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-27 | 1991-02-26 | 1991-08-28 | $7700.00 | Window Closed / Lapsed |