Electrophotographic copying machine

Details Electrophotographic copying machine Electrophotographic copying machine

1988-09-26

1989-11-21

Moses, R. L.

Photocopying

Contact printing

Light boxes

355245, 355326, 355328, G03G 1506

Patent

active

048826057

ABSTRACT:
An electrophotographic copying machine which comprises a rotatable photoreceptor, a developing devices including a first removable developing device and a second developing device provided at downstream of the first removable developing device with respect the rotation of the photoreceptor, a first seal member arranged at the first developing device for preventing toner from scattering, a second seal member which is arranged at the second developing device for preventing toner from scattering and is movable to contact with the photoreceptor, a first moving member for moving the second seal member from a first state to be out of contact with the photoreceptor to a second state to be in contact therewith upon the removal of the first developing device, and a second moving member for moving the second seal member from the second state to the first state upon the attachment of the first developing device.

REFERENCES:
patent: 3814515 (1974-06-01), Takahashi et al.
patent: 4168901 (1979-09-01), Ito et al.
patent: 4400081 (1983-08-01), Yamashita et al.
patent: 4674865 (1987-06-01), Tada et al.
patent: 4705394 (1987-11-01), Watanabe
patent: 4730205 (1988-03-01), Ogiri et al.
patent: 4754301 (1988-06-01), Kasamura et al.

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