Image forming apparatus

Details Image forming apparatus Image forming apparatus

2011-02-14

2011-11-01

McClain, Gerald (Department: 3653)

Sheet feeding or delivering

Feeding

With means to interrupt feeding

C271S258010, C271S225000, C271S902000, C399S124000, C399S370000

Reexamination Certificate

active

08047539

ABSTRACT:
If a jam detecting portion detects a sheet jam, a rear end position of the jammed sheet is computed based on information, when a rear end of the jammed sheet is located within an area A1and a length Ls of the jammed sheet in a conveying direction of the sheet is equal to or shorter than a distance L between the area A1and an area A2, driving operations of a pre-registration roller and a registration roller are controlled so that the jammed sheet is conveyed to a downstream until a rear end of the sheet passes through a downstream end of the area A1. When Ls is longer than L, the pre-registration roller and the registration roller are controlled so that the jammed sheet is conveyed toward the upstream until the rear end of the sheet passes through an upstream end of the area A1.

REFERENCES:
patent: 6741815 (2004-05-01), Fujita et al.
patent: 7085504 (2006-08-01), Matsuyama et al.
patent: 7597311 (2009-10-01), Kawata et al.
patent: 2007/0059037 (2007-03-01), Hirai
patent: 2010/0111583 (2010-05-01), Fujita
patent: 05053405 (1993-03-01), None
patent: 2007-052276 (2007-03-01), None

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