US6097905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image heating apparatus
Assignee: Canon Inc
•
Filing: 1999-08-25
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Granted: 2000-08-01
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Expires: 2019-08-25
Abstract
Abstract For use in a copying apparatus or the like, there is provided an image heating apparatus having a first heater, a second heater, and a power supply control device for controlling the power supply to the first and second heaters, wherein the power supply control unit is adapted, in case of power supply to both of the first and second heaters, to at first start power supply to the first heater and then to the second heater, and, in case of power supply again to both of the first and second heaters, to at first start power supply to the second heater and then to the first heater.
Inventors
- 👤 Yukio Watanabe
- 👤 Shigemichi Hamano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
An image heating apparatus comprising: a first heater; a second heater; and power supply control means for controlling a power supply to said first and second heaters; wherein said power supply control means controls the power supply to start power supply to said second heater after starting of power supply to said first heater in case where power is supplied to both of said first and second heaters, and to start power supply to said first heater after starting of power supply to said second heater in case where power is supplied again to both of said first and second heaters.
Claim 2
Dependent Claim
101 words
An image heating apparatus comprising: a first heater; a second heater; and power supply control means for controlling a power supply to said first and second heaters; wherein said power supply control means controls the power supply to start power supply to said second heater after starting of power supply to said first heater in case where power is supplied to both of said first and second heaters, and to start power supply to said first heater after starting of power supply to said second heater in case where power is supplied again to both of said first and second heaters.
Claim 3
Dependent Claim
59 words
An image heating apparatus according to claim 1, wherein said power supply control means, in case where an interruption signal is inputted to said power supply control means in the course of power supply to both of said first and second heaters, controls the power supply so as to reduce a power consumption of said first and second heaters.
Claim 4
Dependent Claim
51 words
An image heating apparatus according to claim 2, wherein said power supply control means in case where power is supplied again to both of said first and second heaters after termination of the interruption signal, starts power supply to said first heater after starting of power supply to said second heater.
Claim 5
Dependent Claim
47 words
An image heating apparatus according to claim 2, said image heating apparatus for use in a copying apparatus including a reading unit for reading a document, wherein the interruption signal is inputted into said power supply control means in response to a movement of said reading unit.
Claim 6
Dependent Claim
59 words
An image heating apparatus according to claim 2, said image heating apparatus for use in a copying apparatus including a reading unit for reading a document and a conveying unit for conveying the document to said reading unit, wherein the interruption signal is inputted into said power supply control means in response to a movement of said conveying unit.
Claim 7
Dependent Claim
50 words
An image heating apparatus according to claim 2, wherein said power supply control means, in case an interruption signal is inputted into said power supply control means in the course of power supply to both of said first and second heaters, supplies power alternately to said first and second heaters.
References Cited (Backward Citations)
US5543904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |