Image forming apparatus

Details Image forming apparatus Image forming apparatus

2005-04-05

2005-04-05

Hirshfeld, Andrew H. (Department: 2854)

Electrophotography

Diagnostics

Document handling

C399S018000, C399S019000, C399S020000

Reexamination Certificate

active

06876820

ABSTRACT:
A plurality of photosensitive drums are disposed in a sheet transport direction so as to be in contact with a transfer belt and a transfer voltage for transferring toner images on the photosensitive drums onto a sheet transported by the transfer belt is applied thereto. A sensor for sensing a temperature or humidity in the working atmosphere of the image forming apparatus is provided; when a jam occurs, sheet transportation is ceased at a first stage to thereby enable the sheet in the jam to be removed; at a second stage subsequent thereto, transportation of the sheet is restarted; and a transport distance of the sheet is controlled based on a printing ratio of an image formed on the sheet.

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patent: 11-119490 (1999-04-01), None

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