EP0163145A2
Expired / Lapsed
EP
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Dye transfer type thermal printing sheets and method for printing
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-04-29
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Granted: —
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Expires: 2005-04-29
Abstract
Abstract The dye transfer type thermal printing sheet and method for printing of this invention are a printing sheet comprising a transfer sheet in which a smooth heat-resistant layer composed of fine particles, a liquid lubricating material and a polymer is formed on one side of a substrate, and on the other side is formed a coloring material layer containing at least one sublimable dye, non-sublimable particles and a binder, a part of said non-sublimable particles jutting out from the reference surface of the sublimable dye layer; and an image-receiving sheet having, on a substrate for image-receiving sheet, a development layer composed of, at least, inorganic fine particles, a binder having dye-affinity and another binder immiscible with said binder; and a dye i transfer type thermal method for printing which comprises placing the aforesaid coloring material layer and development layer of the above-mentioned printing sheet face to I face with each other, heating the printing sheet selectively from the smooth heat-resistant layer side of the transfer ' sheet, and thereby forming an image on the image-receiving sheet. By the above mentioned sheet and method, there can be given stable running of transfer sheet and a printed image which is reduced in dropout and noise, has a good depth of color and a good quality of image, and is excellent in storage stability. Further, a full-color image also can be obtained by using three kinds of transfer sheets which develop a cyan color, a magenta color or a yellow color, respectively.
Inventors
- 👤 Nobuyoshi Taguchi
- 👤 Akihiro Imai
- 👤 Toshio Niwa
- 👤 Yukichi Murata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 07:41
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/382; B41M5/385; B41M5/392; B41M5/395; B41M5/44; B41M5/443; B41M5/3852; B41M5/3854; B41M5/3858; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S430/00; Y10S430/146; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/25
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
75 words
In a transfer sheet for thermal printing, the improvement wherein on a substrate is formed a coloring material layer containing at least one member selected from the group consisting of the sublimable dyes represented by the general formulae (I), (II) and (III): wherein X is a hydrogen atom or a methyl group and each of R and R' is a methyl group, an ethyl group, or a straight- chain or branched-chain propyl or butyl group.
Claim 2
Dependent Claim
75 words
In a transfer sheet for thermal printing, the improvement wherein on a substrate is formed a coloring material layer containing at least one member selected from the group consisting of the sublimable dyes represented by the general formulae (I), (II) and (III): wherein X is a hydrogen atom or a methyl group and each of R and R' is a methyl group, an ethyl group, or a straight- chain or branched-chain propyl or butyl group.
Claim 3
Dependent Claim
33 words
A transfer sheet for thermal printing according to claim 1, wherein the aforesaid coloring material layer contains two or more sublimable dyes which are different in their substituents in the above general formulae.
Claim 4
Dependent Claim
19 words
A transfer sheet for thermal printing according to claim 1, wherein the aforesaid coloring material layer contains a binder.
Claim 5
Dependent Claim
19 words
A transfer sheet for thermal printing according to claim 3, wherein the aforesaid coloring material layer contains non-sublimable particles.
Claim 6
Dependent Claim
30 words
A transfer sheet for thermal printing according to claim 4, wherein a part of the non-sublimable particles jut out from the reference surface of the binder or the sublimable dye.
Claim 7
Dependent Claim
29 words
A transfer sheet for thermal printing according to claim 4, wherein the sublimable dye is contained in the binder or in the surface or interior of the non-sublimable particles.
Claim 8
Dependent Claim
24 words
A transfer sheet for thermal printing according to claim 5, wherein the particle size of the non-sublimable particles ranges from 0.1 to 100 um.
Claim 9
Dependent Claim
28 words
A transfer sheet for thermal printing according to claim 5, wherein the height of the non-sublimable particles from the aforesaid reference surface ranges from 0.1 to 100 um.
Claim 10
Dependent Claim
40 words
A transfer sheet for thermal printing according to claim 5, wherein any point in the range bounded by a distance of 200 µm from each point on the circumference of a section of any non-sublimable particle along the reference surface.
Claim 11
Dependent Claim
60 words
A transfer sheet for thermal printing according to claim 1, wherein a smooth heat-resistant layer composed of fine particles and a polymer is formed on the side reverse to one side of the aforesaid substrate on which the aforesaid coloring material layer is formed, and the surface of the aforesaid smooth heat-resistant layer is roughened by the aforesaid fine particles.
Claim 12
Dependent Claim
22 words
A transfer sheet for thermal printing according to claim 10, wherein the aforesaid smooth heat-resistant layer further contains a liquid lubricating material.
Claim 13
Dependent Claim
45 words
A transfer sheet for thermal printing according to claim 1, which has a polymer composition layer composed of a liquid lubricating material and a polymer on the side reverse to one side of the aforesaid substrate on which the aforesaid coloring material layer is formed.
Claim 14
Dependent Claim
54 words
A transfer sheet for thermal printing according to claim 1, wherein three coloring material layers different in hue which individually contain at least one sublimable dye selected from the group consisting of sublimable dyes of the general formulae (I), (II) and (III), respectively, are placed in sequence so as to join their surfaces together.
Claim 15
Dependent Claim
85 words
A transfer sheet for thermal printing according to claim 1, wherein three coloring material layers different in hue which individually contain at least one sublimable dye selected from the group consisting of sublimable dyes of the general formulae (I), (II) and (III), respectively, and the fourth coloring material layer containing sublimable dyes selected, at least one for each formula, from the groups consisting of sublimable dyes of the general formulae (I), (II) and (III) are placed in sequence so as to join their surfaces together.
Claim 16
Dependent Claim
169 words
A dye transfer type thermal method for printing which comprises placing a transfer sheet in which a coloring material layer containing at least one sublimable dye selected from the group consisting of sublimable dyes represented by the general formulae (I), (II) and (III): (wherein X is a halogen atom or a methyl group and each of R and R' is a methyl group, an ethyl group or a straight chain or branched chain propyl or butyl group), rion- sublimable particles and a binder, a part of said non-sublimable particles jutting out from the reference surface of the sublimable dye layer, and an image receiving sheet having, on a substrate for image-receiving sheet, a development layer composed of inorganic fine particles, a binder having dye-affinity and another binder immiscible with said binder, so that the above-mentioned coloring material layer and development layer are placed face to face with each other; heating the resulting assembly selectively from the smooth heat-resistant layer side; and thereby forming an image on the image-receiving sheet.
Claim 17
Dependent Claim
169 words
A dye transfer type thermal method for printing which comprises placing a transfer sheet in which a coloring material layer containing at least one sublimable dye selected from the group consisting of sublimable dyes represented by the general formulae (I), (II) and (III): (wherein X is a halogen atom or a methyl group and each of R and R' is a methyl group, an ethyl group or a straight chain or branched chain propyl or butyl group), rion- sublimable particles and a binder, a part of said non-sublimable particles jutting out from the reference surface of the sublimable dye layer, and an image receiving sheet having, on a substrate for image-receiving sheet, a development layer composed of inorganic fine particles, a binder having dye-affinity and another binder immiscible with said binder, so that the above-mentioned coloring material layer and development layer are placed face to face with each other; heating the resulting assembly selectively from the smooth heat-resistant layer side; and thereby forming an image on the image-receiving sheet.
Claim 18
Dependent Claim
39 words
A dye transfer type thermal method for printing according to claim 15, wherein there is used a transfer sheet in which three or more of the aforesaid non-sublimable particles are provided in any portion corresponding to a picture element.
References Cited (Backward Citations)
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