US4837200A
Expired / Lapsed
US
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Image-receiving sheet for thermal transfer printing
Assignee: DAI NIPPON INSATSU 1-1 KAGA-CHO 1-CHOME ICHIGAYA SHINJUKU-KU TOKYO JAPAN KK
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Filing: 1988-07-21
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Granted: 1989-06-06
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Expires: 2008-07-21
Abstract
Abstract An image-receiving sheet for thermal transfer printing comprising on a substrate an intermediate layer made primarily of a resin insoluble in organic solvents, and an image-receiving layer made primarily of a resin soluble in organic solvents and formed on the intermediate layer. This type of sheet is significantly improved in smoothness and blocking properties, enabling one to obtain print images of a very high quality, by thermal transfer printing, which are substantially free from the known problem relating to a missing transfer portion and which are high in the optical density for images as printed.
Inventors
- 👤 Hiromasa Kondo
- 👤 Yoshitaka Okumura
- 👤 Terunobu Fukui
- 👤 Noritaka Egashira
- 👤 Tamami Iwata
- 👤 Naoto Satake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/44; B41M5/41; B41M5/50; B41M5/52; B41M2205/00; B41M2205/32; B41M5/5254; B41M5/5263; B41M5/5272; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the insoluble resin being formed from a copolymer latex satisfying the following requirements (a) and (b): (a) compositional constituents: aliphatic conjugated diolefinic 20-70 wt. % monomer: unsaturated acid monomer: 0.5-15 wt. % olefinic monomer other than said aliphatic conjugated diolefinic monomer: (b) gel content: 85-100 wt. %.
Claim 2
Dependent Claim
98 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the insoluble resin being formed from a copolymer latex satisfying the following requirements (a) and (b): (a) compositional constituents: aliphatic conjugated diolefinic 20-70 wt. % monomer: unsaturated acid monomer: 0.5-15 wt. % olefinic monomer other than said aliphatic conjugated diolefinic monomer: (b) gel content: 85-100 wt. %.
Claim 3
Dependent Claim
34 words
An image-receiving sheet for thermal transfer printing according to claim 1, wherein said copolymer latex is contained in an amount not less than 60 wt. % of the total solids in said intermediate layer.
Claim 4
Dependent Claim
23 words
An image-receiving sheet for thermal transfer printing according to claim 1, wherein said substrate is a paper sheet made primarily of pulp fibers.
Claim 5
Dependent Claim
85 words
An image-receiving sheet for thermal transfer printing according to claim 3, wherein said paper sheet has a smoothness of not smaller than 6% and a water absorption of from 1 to 30 g/m 2 when determined by the following procedures, respectively: Smoothness: a value measured with a specular reflection smoothness tester at a pressure of 20 kg/cm 2 ; and Water absorption: a 5 second value determined according to "a test method for water absorption of paper and paperboard (Kopp method)" prescribed in JIS P-8140.
Claim 6
Dependent Claim
90 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the insoluble resin being formed of fine particles of a polyolefin resin having a melting point not lower than 70° C. and a heat absorption, accompanied by softening or phase transition upon heating, of not larger than 50 cal/g.
Claim 7
Dependent Claim
90 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the insoluble resin being formed of fine particles of a polyolefin resin having a melting point not lower than 70° C. and a heat absorption, accompanied by softening or phase transition upon heating, of not larger than 50 cal/g.
Claim 8
Dependent Claim
39 words
An image-receiving sheet for thermal transfer printing according to claim 5, wherein the fine particles of the polyolefin resin are contained in an amount of not less than 10 wt. % of the total solids in the intermediate layer.
Claim 9
Dependent Claim
39 words
An image-receiving sheet for thermal transfer printing according to claim 6, wherein the fine particles of the polyolefin resin are contained in an amount of not less than 60 wt. % of the total solids in the intermediate layer.
Claim 10
Dependent Claim
23 words
An image-receiving sheet for thermal transfer printing according to claim 5, wherein said substrate is a paper sheet made primarily of pulp fibers.
Claim 11
Dependent Claim
84 words
An image-receiving sheet for thermal transfer printing according to claim 8, wherein said paper sheet has a smoothness of not smaller than 6% and a water absorption of from 1 to 30 g/m 2 when determined by the following procedures, respectively: smoothness: a value measured with a specular reflection smoothness tester at a pressure of 20 kg/cm 2 ; and water absorption: a 5 second value determined according to "a test method for water absorption of paper and paperboard(Kopp method)" prescribed in JI P-8140.
Claim 12
Dependent Claim
61 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the intermediate layer containing hollow particles of an insoluble resin.
Claim 13
Dependent Claim
61 words
An image-receiving sheet for thermal transfer printing which comprises an intermediate layer and an image-receiving layer formed on a substrate in this order, said intermediate layer being comprised primarily of a resin insoluble in an organic solvent, said image-receiving layer being comprised primarily of a resin soluble in an organic solvent, the intermediate layer containing hollow particles of an insoluble resin.
Claim 14
Dependent Claim
35 words
An image-receiving sheet for thermal transfer printing according to claim 10, wherein said hollow particles are contained in an amount of not less than 50 wt. % of the total solids in the intermediate layer.
Claim 15
Dependent Claim
23 words
An image-receiving sheet for thermal transfer printing according to claim 10, wherein said substrate is a paper sheet made primarily of pulp fibers.
Claim 16
Dependent Claim
84 words
An image-receiving sheet for thermal transfer printing according to claim 12, wherein said paper sheet has a smoothness of not less than 6% and a water absorption of from 1 to 30 g/m 2 when determined by the following procedures: smoothness: a value measured by a specular reflection smoothness tester at a pressure of 20 kg/cm 2 ; and water absorption: a 5 second value determined according to "a test method for water absorption of paper and paperboard (Kopp method)" prescribed in JIS P-8140.
References Cited (Backward Citations)
US4720480A
Cited
JPH01144394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |