US4702958A
Expired / Lapsed
US
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Laser recording film
Assignee: Daicel Corp
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Filing: 1985-06-07
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Granted: 1987-10-27
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Expires: 2005-06-07
Abstract
Abstract PCT No. PCT/JP85/00324 Sec. 371 Date Jan. 23, 1986 Sec. 102(e) Date Jan. 23, 1986 PCT Filed Jun. 7, 1985 PCT Pub. No. WO86/00048 PCT Pub. Date Jan. 3, 1986.A laser recording film prepared by coating a transparent film with a recording medium comprising graphite particles at least 95% of which have a particle diameter of 2 mu m or below and at least 40% of which have a particle diameter of 0.2 mu m or below. Said laser recording film can provide high-resolution, heat-mode recording.
Inventors
- 👤 Masanori Itoh
- 👤 Fumihiko Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:38
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/46; B41M5/465; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/30; Y10T428/31504; Y10T428/31786; Y10T428/31855
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
49 words
A laser recording film prepared by coating a transparent film with a recording medium comprising graphite particles, at least 95% of which have a particle diameter of 2 μm or below and at least 40% of which have a particle diameter of 0.2 μm or below and a binder.
Claim 2
Dependent Claim
49 words
A laser recording film prepared by coating a transparent film with a recording medium comprising graphite particles, at least 95% of which have a particle diameter of 2 μm or below and at least 40% of which have a particle diameter of 0.2 μm or below and a binder.
Claim 3
Dependent Claim
21 words
The laser recording film as defined by claim 1, wherein the thickness of the recording medium is 0.2 to 2 μm.
Claim 4
Dependent Claim
20 words
The laser recording film as defined by claim 1, wherein thickness of the recording medium is 0.2 to 0.7 m.
Claim 5
Dependent Claim
31 words
The laser recording film as defined by claim 1, wherein the graphite particles are present in an amount of 50-85% by weight based upon the total amount of graphite and binder.
Claim 6
Dependent Claim
41 words
The laser recording film as defined by claim 1, wherein the binders include acrylic resins such as polymethyl methacrylate and polymethyl acrylate, cellulose derivatives such as ethylcellulose, nitrocellulose, and cellulose acetate butyrate, phenolic resins, polyvinyl chloride, and vinyl chloride/vinyl acetate copolymers.
Claim 7
Dependent Claim
24 words
The laser recording film as defined by claim 1, wherein the transparent film is selected from the group consisting of polystyrene and polyethylene terephthalate.
References Cited (Backward Citations)
US3787873A
Cited
US4245003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |