Paper convey method and device in image forming apparatus

Details Paper convey method and device in image forming apparatus Paper convey method and device in image forming apparatus

2005-04-26

2005-04-26

Walsh, Donald P (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C271S902000

Reexamination Certificate

active

06883800

ABSTRACT:
In a paper convey method and device in an image forming apparatus according to this invention, a first sensor detects that the first paper sheet is fed from a paper feed unit, and a CPU outputs a control signal defining a desired cycle time at which paper sheets should be conveyed. A second sensor then detects the timing at which each paper sheet passes near a reverse motor in a reverse/paper discharge unit. The same or another CPU compares the timing of the passage of each paper sheet with the cycle time defined by the control signal and determines a delay or advance for each paper sheet. The desire cycle time is realized by controlling the reverse motor and a paper discharge motor in accordance with the determination result.

REFERENCES:
patent: 5957450 (1999-09-01), Kida et al.
patent: 6681096 (2004-01-01), Seto et al.
patent: 20030062671 (2003-04-01), Yasui et al.
patent: 11-059965 (1999-03-01), None
patent: 2001-240285 (2001-09-01), None

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