Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2005-06-14
2005-06-14
Tran, Hoan (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S067000
Reexamination Certificate
active
06907203
ABSTRACT:
A method of controlling a fusing temperature of an electrophotographic imaging apparatus includes controlling the fusing temperature of a fusing roller which is subject to a delayed response to heating due to a rubber layer formed on a surface of the fusing roller with a predetermined thickness. In the method, after the fusing temperature of the fusing roller has reached a predetermined target fusing temperature, a power corresponding to an offset value or an offset power supply ratio is supplied to a heater for a predetermined power control period or a predetermined offset control period to maintain the fusing temperature of the fusing roller. A thermal loss in the fusing apparatus during a print mode is compensated by existing power control methods, and the fusing temperature of the fusing roller is maintained at the target fusing temperature by periodically supplying a predetermined amount of the power to the heater, so that a quality of an image fused onto a recording medium is improved.
REFERENCES:
patent: 5671462 (1997-09-01), Toyohara et al.
patent: 5801360 (1998-09-01), Oba et al.
patent: 6185388 (2001-02-01), Yamamoto
patent: 6778789 (2004-08-01), Cho et al.
Samsung Electronics Co,. Ltd.
Stanzione & Kim LLP
Tran Hoan
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