Patent DE412326C successfully refreshed from Google Patents.
US4407003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal printer
Assignee: Canon Inc
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Filing: 1982-01-18
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Granted: 1983-09-27
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Expires: 2002-01-18
Abstract
Abstract A thermal printer is provided in which a source voltage is detected and the driving time of a thermal head as well as the driving time of a motor for driving the thermal head, are suitably controlled according to the result of the detection.
Inventors
- 👤 Hiroshi Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/35; B41J2/355; B41J2/36; B41J2/37
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
65 words
A thermal printer, comprising: a thermal head; a motor for driving said thermal head; a power source for heating said thermal head and for driving said motor; and means for detecting a voltage of said power source used in a printer, for controlling a period of time for heating said thermal head and for driving said motor in accordance with the result of said detection.
Claim 2
Dependent Claim
65 words
A thermal printer, comprising: a thermal head; a motor for driving said thermal head; a power source for heating said thermal head and for driving said motor; and means for detecting a voltage of said power source used in a printer, for controlling a period of time for heating said thermal head and for driving said motor in accordance with the result of said detection.
Claim 3
Dependent Claim
30 words
A thermal printer as set forth in claim 1, wherein at the time when the voltage of said power source is detected, an artificial load is connected to said motor.
Claim 4
Dependent Claim
16 words
A thermal printer as set forth in claim 2, wherein said artificial load includes the motor.
Claim 5
Dependent Claim
53 words
A thermal printer, comprising: a thermal head; a power source for energizing said thermal head; means for detecting a voltage of said power source, and for calculating a mean voltage value from the detected voltage; and means for controlling the energization of said thermal head in accordance with the mean voltage value calculated.
Claim 6
Dependent Claim
53 words
A thermal printer, comprising: a thermal head; a power source for energizing said thermal head; means for detecting a voltage of said power source, and for calculating a mean voltage value from the detected voltage; and means for controlling the energization of said thermal head in accordance with the mean voltage value calculated.
Claim 7
Dependent Claim
39 words
A thermal printer according to claim 4, further comprising: a motor for moving said thermal head; and means for connecting said detecting means to said motor as a pseudo load when the voltage of said power source is detected.
References Cited (Backward Citations)
US4309712A
Cited
US4370666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |