Image-forming machine

Details Image-forming machine Image-forming machine

1991-02-27

1992-06-02

Schacher, Richard A.

Sheet feeding or delivering

Delivering

Multiple discharge

271 65, 271213, 271223, 271273, 271301, B65H 2960

Patent

active

051180936

ABSTRACT:
An image-forming machine having a conveying passage for conveying a sheet material through a transfer zone, a first and a second feed device for feeding the sheet material to the conveying passage, a first feed passage for conducting the sheet material delivered from the first feed device to the conveying passage, a second feed passage for conducting the sheet material delivered from the second feed device to the conveying passage, and a first and a second opening-closing member for opening and closing the first and second feed passages. Various improvements are made on the first and second opening-closing members. Further provided are an improvement for suppressing noises, an improvement for preventing folding of a sheet material, an improvement for easily switching over to a mode of forming an image on both surfaces of a sheet material, an improvement for accurately conducting the sheet material from a reversal holding portion to a return passage, and an improvement for positioning the sheet material received in the receiving-refeeding device at a predetermined widthwise position in the above and other types of image-forming machines.

REFERENCES:
patent: 3476382 (1969-11-01), Tregay
patent: 4066252 (1978-01-01), Wick
patent: 4453819 (1984-06-01), Wada
patent: 4456362 (1984-06-01), Masaki et al.
patent: 4492371 (1985-01-01), Kan et al.
patent: 4508445 (1985-04-01), Izumi
patent: 4583844 (1986-04-01), Honda
patent: 4609281 (1986-09-01), Miyai et al.
patent: 4684235 (1987-08-01), Kohmoto et al.
patent: 4733310 (1988-04-01), Kapp et al.
patent: 4750016 (1988-06-01), Kusumoto et al.
patent: 4866487 (1989-09-01), Ohuchi
Patent Abstracts of Japan, vol. 12, No. 536(M-745) [3203], Sep. 26, 1988 for Japanese Patent No. JP-A-63 112 325.
Patent Abstracts of Japan, vol. 12, No. 356 (M-745) [3203], Sep. 26, 1988 for Japanese Patent No. JP-A-63 112 326.

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