US4960679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming device
Assignee: Canon Inc
•
Filing: 1990-01-11
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Granted: 1990-10-02
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Expires: 2010-01-11
Abstract
Abstract An image forming device is provided which comprises an image forming layer containing molecules of an organic compound capable of phase transition, and functional molecules such as those of a photochromic compound. An image forming process is also provided which employs the above-mentioned device.
Inventors
- 👤 Takashi Nakagiri
- 👤 Yukuo Nishimura
- 👤 Kunihiro Sakai
- 👤 Yoshinori Tomida
- 👤 Ken Eguchi
- 👤 Kenji Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/2467; G11B7/247; G11B7/2472; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/163; Y10S430/165
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
An image-forming device comprising: an image-forming layer formed by the Langmuir-Blodgett process containing a solid organic compound which changes from a solid state to a fluid soft state when heated and a photochromic compound capable of effecting image-formation or information-conversion by undergoing color change when said organic compound is in a fluid or soft state.
Claim 2
Dependent Claim
55 words
An image-forming device comprising: an image-forming layer formed by the Langmuir-Blodgett process containing a solid organic compound which changes from a solid state to a fluid soft state when heated and a photochromic compound capable of effecting image-formation or information-conversion by undergoing color change when said organic compound is in a fluid or soft state.
Claim 3
Dependent Claim
31 words
An image forming device according to claim 1, wherein said organic compound is at least a member selected from higher fatty acids, long-chain dialkyl salts, phospholipids, cyanine dyes, and azo dyes.
Claim 4
Dependent Claim
26 words
An image forming device according to claim 1, wherein the thickness of said image forming layer is in a range from 30 Å to 300 μm.
Claim 5
Dependent Claim
21 words
An image-forming device according to claim 1 further comprising a heat generating element for providing said image-forming layer with thermal energy.
Claim 6
Dependent Claim
18 words
An image forming device according to claim 4, wherein said heat generating element is a radiation absorbing layer.
Claim 7
Dependent Claim
19 words
An image forming device according to claim 4, wherein said heat generating element is a heat generating resistive layer.
Claim 8
Dependent Claim
25 words
An image forming device according to claim 4, wherein the thickness of said heat generating element is in a range from 1000 to 2000 Å.
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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) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |