Image forming apparatus and paper feeding method used with...

Details Image forming apparatus and paper feeding method used with... Image forming apparatus and paper feeding method used with...

2006-09-05

2010-06-08

Mackey, Patrick (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S245000

Reexamination Certificate

active

07731175

ABSTRACT:
An image forming apparatus and a paper feeding method used with the image forming apparatus. An image forming apparatus includes: a paper feeding unit to accommodate a plurality of papers loaded thereon; a pick-up roller which picks up the papers loaded in the paper feeding unit and is set to rotate at multi-step speeds; a paper arrangement unit which aligns the papers to be transferred without skewing by applying a constant pressure to the front end of a paper transferred by a the pick-up roller; a printing unit which is disposed below the paper arrangement unit and forms a predetermined image on the transferred paper; a paper type sensing element which is disposed on a paper transfer path along which the paper feeding unit, the pick-up roller, the paper arrangement unit, and the printing unit are arranged; and a control unit which operates the pick-up roller at a rotation speed according to an identified paper type. Accordingly, the image forming apparatus can prevent paper wrinkling or poor paper arrangement occurring in a paper arrangement process.

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Chinese Office Action mailed Jul. 18, 2008 in CN200610125684.3.

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