Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-06-06

2006-06-06

Hirshfeld, Andrew H. (Department: 2854)

Electrophotography

Diagnostics

Document handling

C399S018000, C399S021000, C400S076000

Reexamination Certificate

active

07058318

ABSTRACT:
An image forming apparatus includes a sheet ejection sensor4disposed immediately downstream of a fixing device3that detects the passage of a sheet P, time measurement means61that measure a time T4from when a print start signal is transmitted during an margin adjustment to when the sheet is detected by the sheet ejection sensor, time storage means62that store a proper setting time T5that is considered as an appropriate time from when the print start signal is transmitted to when the sheet is detected by the sheet ejection sensor so as to set predetermined end margins, and control means63that automatically corrects an signal transmission timing of the print start signal so as to achieve a match between the measured time measured by the time measurement means and the proper setting time stored by the time storage means.

REFERENCES:
patent: 6021284 (2000-02-01), Serizawa et al.
patent: 6240261 (2001-05-01), Tomidokoro
patent: 6407826 (2002-06-01), Hashimoto et al.
patent: 6511239 (2003-01-01), Kretschmann et al.
patent: 6535698 (2003-03-01), Horikoshi
patent: 2002/0136564 (2002-09-01), Takamine et al.
patent: 2002-283676 (2002-10-01), None

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