Image forming apparatus

Details Image forming apparatus Image forming apparatus

1994-11-08

1996-01-23

Smith, Matthew S.

Sheet feeding or delivering

Feeding

Multiple supplies

271 909, 271 911, 355200, 355308, 355321, B41F 1358, G03G 1500

Patent

active

054859905

ABSTRACT:
An image forming apparatus is disclosed which comprises a main body provided with image forming system, a standard feeding unit separably attached to the main body and adapted to store recording papers, and an optional feeding unit selectively attached between the main body and the standard feeding unit and adapted to store recording papers. The standard feeding unit includes a gear system which transmits drive force generated by a motor in the main body only to a feeding system of the standard feeding unit, and the optional feeding unit includes a gear system which transmits the drive force generated by the motor both to the feeding system of the optional feeding unit and to the gear system of the standard feeding unit. While the image forming apparatus is in the mode having the optional feeding unit attached thereto, an electric signal and drive force are transmitted through the optional feeding unit between the main body and the standard feeding unit.

REFERENCES:
patent: 4478506 (1984-10-01), Miyoshi et al.
patent: 4569582 (1986-02-01), Hyltoft
patent: 4605215 (1986-08-01), Hyltoft
patent: 4733310 (1988-03-01), Kapp et al.
patent: 4958822 (1990-09-01), Rutihauser et al.
patent: 4966356 (1990-10-01), Ohyabu et al.
patent: 5191382 (1993-03-01), Okamura et al.

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