Patent US4120722A successfully refreshed from Google Patents.
US4120722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal development of imaged light-sensitive recording material using microwaves
Assignee: Fujifilm Holdings Corp
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Filing: 1977-04-18
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Granted: 1978-10-17
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Expires: 1997-04-18
Abstract
Abstract A process for thermal development, which comprises irradiating with microwaves an imagewise exposed thermally developable recording material in thermal contact with a conductive layer or material having a surface electric resistance ranging from about 1 ohm/□ to about 10 5 ohm/□, whereby the heat generated in the conductive layer or material develops the thermally developable recording material.
Inventors
- 👤 Yoshihiko Okamoto
- 👤 Takahiro Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:08
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/60; G03C5/18; G03C5/26; G03C5/263
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A process for thermal development which comprises irradiating with microwaves an imagewise light exposed thermally developable light-sensitive recording material comprising a support having a conductive material dispersed therein and a thermally developable light-sensitive recording layer on the support and in thermal contact therewith, said support having a surface electric resistence ranging from about 1 ohm/□ to about 10 5 ohm/□, whereby the heat generated in said support develops said thermally developable recording material.
Claim 2
Dependent Claim
73 words
A process for thermal development which comprises irradiating with microwaves an imagewise light exposed thermally developable light-sensitive recording material comprising a support having a conductive material dispersed therein and a thermally developable light-sensitive recording layer on the support and in thermal contact therewith, said support having a surface electric resistence ranging from about 1 ohm/□ to about 10 5 ohm/□, whereby the heat generated in said support develops said thermally developable recording material.
Claim 3
Dependent Claim
30 words
The process of claim 1, wherein said thermally developable light-sensitive recording said layer comprises a silver halide emulsion, a developing agent and a material which releases an alkali upon heating.
Claim 4
Dependent Claim
22 words
The process of claim 1, wherein said thermally developable light-sensitive recording, said layer comprises a photolytic diazonium salt and a color coupler.
Claim 5
Dependent Claim
30 words
The process of claim 1, wherein said thermally developable light-sensitive recording layer is capable of producing a vesicular image and comprising a photolytic diazonium salt dispersed in a synthetic resin.
Claim 6
Dependent Claim
28 words
The process of claim 1, wherein said thermally developable light-sensitive recording said layer comprises a substantially light-insensitive organic silver salt, a light-sensitive silver halide, and a reducing agent.
References Cited (Backward Citations)
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Cited
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US3032414A
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US3408192A
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US3785821A
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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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |