Image forming system including attachable sheet supplying units

Details Image forming system including attachable sheet supplying units Image forming system including attachable sheet supplying units

1989-10-18

1992-09-22

Grimley, A. T.

Photocopying

Contact printing

Light boxes

3461601, B41J 1100

Patent

active

051501660

ABSTRACT:
An image forming system for copiers, printers and the like having a main body which forms images on sheets of paper inserted therein and a plurality of sheet feeding units selectively attachable to the main body. The main body has a timing roller set which transports the papers to an image forming position with an appropriate timing, and each of the sheet feeding units has a paper feeding system with a take-up roller for supplying papers from the unit directly to the timing roller set without intermediate rollers in the main body. The system further includes side and bottom sheet feeding units selectively attachable to the main body and the side unit includes a guide for guiding sheets from the bottom unit into the main body. The system further includes a separate sheet guide mountable on the bottom unit for guiding sheets into the main body when the side unit is absent from the system. The invention permits the paper feeding construction of the image forming systems to be easily and freely changed as a whole.

REFERENCES:
patent: 4222660 (1980-09-01), Furuichi et al.
patent: 4436406 (1984-03-01), Murasaki et al.
patent: 4657375 (1987-04-01), Watanabe et al.
patent: 4772921 (1988-09-01), Ito
patent: 4796055 (1989-01-01), Takano
patent: 4872659 (1989-10-01), Kato et al.
patent: 4945390 (1990-07-01), Hasegawa et al.
patent: 4975749 (1990-12-01), Tsunoda et al.

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