Patent US4642657A successfully refreshed from Google Patents.
US4642657A
Expired / Lapsed
US
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Recorder
Assignee: Canon Inc
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Filing: 1985-03-27
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Granted: 1987-02-10
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Expires: 2005-03-27
Abstract
Abstract A recorder comprises a recording head having recording elements, a power supply for supplying a power to the recording head, a cable for electrically connecting the recording head to the power supply to supply the power of the power supply to the recording head, and a voltage regulator for detecting a voltage actually applied to the recording elements to regulate the voltage applied to the recording elements.
Inventors
- 👤 Osamu Asakura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:26
CPC Classifications
G; G01; G01D; G01D3/00; G01D3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
147 words
A recorder comprising: recording means having a recording element for recording on a recording medium; power source means for providing electrical energy; drive means for enabling electrical energy from said power source to energize said recording element in accordance with a signal; a carrier movable relative to said power source means and having said recording means and said drive means mounted thereon; electrical connection means connected at a first end thereof to said power source means and at a second end thereof to said recording means for supplying electrical energy provided by said power source means to said recording element when said recording element is enabled by said drive means; and regulation means for detecting the voltage proximate to said second end of said electrical connection means and for regulating the electrical energy supplied to said first end of said electrical connection means based on the detection.
Claim 2
Dependent Claim
147 words
A recorder comprising: recording means having a recording element for recording on a recording medium; power source means for providing electrical energy; drive means for enabling electrical energy from said power source to energize said recording element in accordance with a signal; a carrier movable relative to said power source means and having said recording means and said drive means mounted thereon; electrical connection means connected at a first end thereof to said power source means and at a second end thereof to said recording means for supplying electrical energy provided by said power source means to said recording element when said recording element is enabled by said drive means; and regulation means for detecting the voltage proximate to said second end of said electrical connection means and for regulating the electrical energy supplied to said first end of said electrical connection means based on the detection.
Claim 3
Dependent Claim
30 words
A recorder according to claim 1, wherein said regulation means detects the voltage across said recording element and said drive means to regulate the voltage applied to said recording element.
Claim 4
Dependent Claim
35 words
A recorder according to claim 1, wherein said regulation means detects the voltage across said recording element and said drive means to regulate the pulse width of the electrical energy applied to said recording element.
Claim 5
Dependent Claim
23 words
A recorder according to claim 1, wherein said carrier includes memory means for storing therein data to be recorded by said recording means.
Claim 6
Dependent Claim
19 words
A recorder according to claim 1, wherein said power source means is mounted on a stationary recorder main body.
Claim 7
Dependent Claim
18 words
A recorder according to claim 1, wherein said regulation means is mounted on a stationary recorder main body.
Claim 8
Dependent Claim
66 words
A recorder according to claim 1 wherein: said recording means includes a plurality of said recording elements selectively enabled by said drive means, the voltage applied to said recording means being dependent on the number of said recording elements that are enabled; and said regulation means maintains the voltage applied to each said recording element substantially constant regardless of the number of said recording elements enabled.
References Cited (Backward Citations)
US4361844A
Cited
US4409600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |