Image forming apparatus and paper feeding method

Details Image forming apparatus and paper feeding method Image forming apparatus and paper feeding method

2011-03-01

2011-03-01

Karmis, Stefanos (Department: 3653)

Sheet feeding or delivering

Feeding

Separator and conveyor

C271S010020, C271S010120, C271S010130, C271S242000

Reexamination Certificate

active

07896337

ABSTRACT:
An image forming apparatus includes an external gear to which a rotating force of a resist gear is transmitted, a ratchet for transmitting a rotating force from the external gear to a paper feed roller or releasing the transmission, and a ratchet arm having a claw engaged with the ratchet to transmit a rotation of the external gear, thereby rotating the paper feed roller, and a claw engaged with a slit provided on a boss of the paper feed roller to turn the paper feed roller toward a rotation start position and removing the claw from the ratchet to stop the paper feed roller, and the boss is provided with an offset bottom peripheral surface to be moved with the claw entering to stop the rotation of the paper feed roller when a resist sensor detects a tip of a recording paper.

REFERENCES:
patent: 4071295 (1978-01-01), Komori et al.
patent: 4529188 (1985-07-01), Sturnick
patent: 5501444 (1996-03-01), Yukimachi et al.
patent: 5642952 (1997-07-01), Tomatsu et al.
patent: 6983122 (2006-01-01), Hayamizu et al.
patent: 6-135589 (1994-05-01), None
patent: 9-211921 (1997-08-01), None
patent: 9-216754 (1997-08-01), None
English language Abstract of JP 6-135589.
English language Abstract of JP 9-216754.
English language Abstract of JP 9-211921.

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