Image forming apparatus with sheet conveying apparatus that faci

Details Image forming apparatus with sheet conveying apparatus that faci Image forming apparatus with sheet conveying apparatus that faci

1997-01-08

1999-04-13

Royer, William

Electrophotography

Diagnostics

Document handling

399 20, 399 21, 399124, 399388, G03G 2100

Patent

active

058936572

ABSTRACT:
An image forming apparatus for forming an image on a sheet has a first conveyance path for guiding the sheet, and a second conveyance path arranged in continuation from the first conveyance path to guide the sheet conveyed from the first conveyance path. A conveyor drum, which may be an image transfer drum, retains the sheet on its surface and conveys the sheet such that the sheet moves along said second conveyance path. The drum and the second conveyance path are supported such that they can be moved in a direction which intersects the direction of sheet conveyance, so as to be drawn out of the main part of the apparatus. A sheet jam detector is provided for detecting a sheet jam at a predetermined position which is on the drum and which is spaced from the inlet of the second conveyance path by a distance greater than the length of the sheet which has the greatest length among the sheets which are to be handled by the apparatus, as measured along the second path. A plurality of conveying rollers located within the first and second conveyance paths are selectively rotated to ensure that a trailing end of the sheet passes the inlet of the second conveyance path. A space is provided within the second conveyance path for accommodating bulging of the sheet during that process.

REFERENCES:
patent: 4531823 (1985-07-01), Deguchi et al.
patent: 4873554 (1989-10-01), Greco, Jr.

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