US4760462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sensitive recording system in facsimile communication
Assignee: Ricoh Co Ltd
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Filing: 1985-11-12
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Granted: 1988-07-26
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Expires: 2005-11-12
Abstract
Abstract A heat-sensitive recording system for use in a facsimile communication network is provided. The present recording system is structured to use the same image information in multiple times under certain circumstances to keep the thermal recording head at a constant temperature. Accordingly, the image density of a recorded image is ensured to be uniform.
Inventors
- 👤 Mutsuo Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:08
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025; H04N1/40031; H04N1/32; H04N1/333; H04N1/33307
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
In a method of recording decoded image information on the surface of a heat-sensitive recording medium by first decoding and storing image information for one scanning line in one of a pair of storing means and then transferring said decoded image information stored in said one of said pair of storing means to a thermal recording head in sliding contact with said recording medium if all of said decoded image information for one scanning line has been stored in said one of said pair of storing means, the improvements reside in that upon completion of recording said decoded image information for one scanning line in said one of said pair of storing means, the same decoded image information which has been used in the last preceding step and which is stored in said one of pair of storing means is once again used for recording in the next adjacent scanning line if the next decoded image information for a full scanning line has not yet been decoded and stored in the other of said pair of storing means thereby allowing to maintain the temperature of said recording head substantially at constant.
Claim 2
Dependent Claim
191 words
In a method of recording decoded image information on the surface of a heat-sensitive recording medium by first decoding and storing image information for one scanning line in one of a pair of storing means and then transferring said decoded image information stored in said one of said pair of storing means to a thermal recording head in sliding contact with said recording medium if all of said decoded image information for one scanning line has been stored in said one of said pair of storing means, the improvements reside in that upon completion of recording said decoded image information for one scanning line in said one of said pair of storing means, the same decoded image information which has been used in the last preceding step and which is stored in said one of pair of storing means is once again used for recording in the next adjacent scanning line if the next decoded image information for a full scanning line has not yet been decoded and stored in the other of said pair of storing means thereby allowing to maintain the temperature of said recording head substantially at constant.
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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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |