Sheet feeding or delivering – Feeding – With means to align sheet
Patent
1993-04-13
1994-11-08
Schacher, Richard A.
Sheet feeding or delivering
Feeding
With means to align sheet
271242, 271250, 226 19, B65H 700
Patent
active
053620410
ABSTRACT:
A sheet registering unit for an image forming apparatus in which in the location upstream of the transfer stage, a preregistering roller device and a registering roller device are disposed while being separated with a predetermined distance from each other, and the leading edge of a sheet of paper is positioned with the aid of a loop of the sheet formed in a manner that the leading edge is thrust against the nip of the paired rollers of the registering roller device, and in this state the sheet is additionally pushed by the preregistering roller pair. In the sheet registering unit, the shafts supporting the roller members of the registering roller device or the roller members are supported by the combination of linear bearing members and springs, and by a pressure in the oblique direction caused in the sheet nipped by the registering roller device, the roller members of the registering roller device are shifted in the axial direction.
REFERENCES:
patent: 3637122 (1972-01-01), Tokunaga
patent: 3784076 (1974-01-01), Avery
patent: 4426073 (1984-01-01), Mizuma
patent: 4685664 (1987-08-01), Petersdorf
patent: 4785514 (1988-11-01), Kannwischer
patent: 4799084 (1989-01-01), Koike
patent: 4805892 (1989-02-01), Calhoun
patent: 5215300 (1993-06-01), Hiroi
Ichikawa Hideo
Kogure Yoshio
Miyazawa Takuji
Nakamura Yasuo
Ryuzaki Takahiko
Fuji 'Xerox Co., Ltd.
Schacher Richard A,.
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