US4138522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color image forming system including a layer formed from a dried residue of a developing ink containing a polyester resin binder
Assignee: Fujifilm Holdings Corp
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Filing: 1976-12-09
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Granted: 1979-02-06
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Expires: 1996-12-09
Abstract
Abstract A developing ink comprising a developer, a polyester resin binder and a liquid medium. The polyester resin binder is a thermoplastic linear polymeric compound having preferably a molecular weight of about 5,000 to 50,000 and a melting point of about 90 to 170° C.
Inventors
- 👤 Akio Ishizuka
- 👤 Akio Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
166 words
A color image forming system comprising the components (a) an electron donating color former; and (b) an electron accepting color developer, wherein said component (b) is in the form of a layer on a support, said layer being the dried residue of a coating of a developing ink comprising (i) an electron accepting developer; (ii) a thermoplastic linear polyester resin binder comprising the condensation product of at least one dicarboxylic acid having 2 to 18 carbon atoms and at least one dihydric alcohol having from 2 to 50 carbon atoms and having a molecular weight of about 5,000 to 50,000 and a melting point of about 90 to 170° C.; and (iii) a liquid medium selected from the group consisting of an alcohol, an ester, an aromatic hydrocarbon and a glycol ether, said ink comprising about 10 to 50% by weight of said developer, about 5 to 45% by weight of said polyester resin binder and about 30 to 80% by weight of said liquid medium.
Claim 2
Dependent Claim
166 words
A color image forming system comprising the components (a) an electron donating color former; and (b) an electron accepting color developer, wherein said component (b) is in the form of a layer on a support, said layer being the dried residue of a coating of a developing ink comprising (i) an electron accepting developer; (ii) a thermoplastic linear polyester resin binder comprising the condensation product of at least one dicarboxylic acid having 2 to 18 carbon atoms and at least one dihydric alcohol having from 2 to 50 carbon atoms and having a molecular weight of about 5,000 to 50,000 and a melting point of about 90 to 170° C.; and (iii) a liquid medium selected from the group consisting of an alcohol, an ester, an aromatic hydrocarbon and a glycol ether, said ink comprising about 10 to 50% by weight of said developer, about 5 to 45% by weight of said polyester resin binder and about 30 to 80% by weight of said liquid medium.
Claim 3
Dependent Claim
24 words
The color image forming system of claim 1, wherein the developer is a clay, an organic acid, an acid polymer or a mixture thereof.
Claim 4
Dependent Claim
48 words
The color image forming system of claim 1, wherein said ink includes a cellulose derivative, a vinyl polymer, polyamide resin, an acrylic resin, a maleic acid resin, or a styrenebutadiene copolymer as a binder with the amount being not more than about 30% of the total binder content.
Claim 5
Dependent Claim
71 words
The color image forming system of claim 1, wherein said dicarboxylic acid is oxalic acid, maleic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, terephthalic acid, isophthalic acid, phthalic acid, alkoxyterephthalic acid, cyclohexane dicarboxylic acid, xylylene dicarboxylic acid, or naphthalene dicarboxylic acid and wherein said dihydric alcohol is ethylene glycol, propylene glycol, butylene glycol, neopentylene glycol, diethylene glycol, polyethylene glycol, hydroquinone, or xylylene diol.
Claim 6
Dependent Claim
16 words
The color image forming system of claim 1, wherein said liquid medium is methyl isobutyl ketone.
Claim 7
Dependent Claim
34 words
The color image forming system in claim 1, wherein said developer is a clay, an organic carboxylic acid, an aromatic hydroxy compound, a metal salt of an aromatic hydroxy compound or an acidic polymer.
Claim 8
Dependent Claim
25 words
The color image forming system of claim 1, wherein said developing ink includes at least one of a plasticizer, a filler, or a white pigment.
Claim 9
Dependent Claim
78 words
The color image forming system of claim 1, wherein said system is in the form of a support having (i) component (b) as a layer upon a layer of component (a) which is coated upon said support; (ii) component (a) as a layer upon a layer of component (b) which is coated upon said support; or (iii) component (a) as a layer upon said support and component (b) as a layer upon the reverse side of said support.
Claim 10
Dependent Claim
16 words
The color image forming system of claim 8, wherein said color former component (a) is encapsulated.
Claim 11
Dependent Claim
22 words
The color image forming system of claim 8, wherein said color former component (a) comprises a color former dispersed in a binder.
Claim 12
Dependent Claim
22 words
The color image forming system of claim 1, wherein said coating on a support of a developing ink is a partial coating.
Claim 13
Dependent Claim
20 words
The color image forming system of claim 1, wherein said polyester resin has a molecular weight of 15,000 to 25,000.
Claim 14
Dependent Claim
25 words
The color image forming system of claim 1, wherein the coating amount of said developing ink is from about 0.5 to 20 g/m 2 .
Claim 15
Dependent Claim
19 words
The color image forming system of claim 13, wherein said coating amount is 3 to 8 g/m 2 .
Claim 16
Dependent Claim
19 words
The color image forming system of claim 14, wherein said coating amount is 4 to 6 g/m 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |