US5013606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film for a resistance layer for an electric-thermal print system
Assignee: Mitsubishi Chemical Corp
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Filing: 1989-08-28
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Granted: 1991-05-07
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Expires: 2009-08-28
Abstract
Abstract A film for a resistance layer for an electric-thermal print system, which comprises from 50 to 85% by weight of a polycarbonate resin and from 15 to 50% by weight of carbon black, and which further contains from 0.1 to 30 parts by weight, relative to 100 parts by weight of the polycarbonate resin, of an elastomer.
Inventors
- 👤 Motoyuki Miyoshi
- 👤 Kazuhisa Kojima
- 👤 Katsuhiko Sugiura
- 👤 Naomi Iketani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/3825; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A ribbon for an electrical-thermal print system selected from the group consisting of (A) a three layered ribbon composed of ink layer/conductive layer/resistance layer, (B) a double layered ribbon composed of ink layer/resistance layer and (C) a double layered ribbon composed of conductive layer/resistance layer wherein said resistance layer comprises from 50 to 85% by weight of a polycarbonate resin and from 15 to 50% by weight of carbon black, and which further contains from 0.1 to 30 parts by weight, relative to 100 parts by weight of the polycarbonate resin, of an elastomer selected from the group consisting of styrene containing elastomers, polyolefin elastomers and acrylate elastomers.
Claim 2
Dependent Claim
108 words
A ribbon for an electrical-thermal print system selected from the group consisting of (A) a three layered ribbon composed of ink layer/conductive layer/resistance layer, (B) a double layered ribbon composed of ink layer/resistance layer and (C) a double layered ribbon composed of conductive layer/resistance layer wherein said resistance layer comprises from 50 to 85% by weight of a polycarbonate resin and from 15 to 50% by weight of carbon black, and which further contains from 0.1 to 30 parts by weight, relative to 100 parts by weight of the polycarbonate resin, of an elastomer selected from the group consisting of styrene containing elastomers, polyolefin elastomers and acrylate elastomers.
Claim 3
Dependent Claim
20 words
The ribbon according to claim 1, wherein the elastomer has a modulus of elasticity of from 1 to 100 MPa.
Claim 4
Dependent Claim
30 words
The ribbon according to claim 1, wherein the content of the elastomer is from 1 to 18 parts by weight, relative to 100 parts by weight of the polycarbonate resin.
Claim 5
Dependent Claim
21 words
The ribbon according to claim 1, wherein the polycarbonate resin has a viscosity average molecular weight of from 25,000 to 80,000.
Claim 6
Dependent Claim
16 words
The ribbon according to claim 1, wherein the elastomer is a polystyrene-polyolefin block copolymer type elastomer.
Claim 7
Dependent Claim
12 words
The ribbon of claim 1 wherein the elastomer is a polyolefin elastomer.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |