Photocopying – Contact printing – Light boxes
Patent
1989-05-02
1990-06-26
Moses, R. L.
Photocopying
Contact printing
Light boxes
355326, 355209, G03G 1500
Patent
active
049376268
ABSTRACT:
An image forming apparatus includes a developing unit storage device including a plurality of storage sections capable of storing developing units and a first detection unit for detecting the presence/absence and types of the developing units in the plurality of storage sections, an image forming device which includes a second detection unit for detecting the presence/absence and a type of a developing unit in the image forming device, and can form an image on a recording material using the developing unit conveyed from the developing unit storage device, a communication device for causing the developing unit storage device and the image forming device to exchange data associated with the presence/absence and types of the developing units, a first display device for displaying the presence/absence and types of the developing units on the basis of a detection result by the first detection unit and the data transmitted from the image forming device by the communication device, and a second display device for displaying the presence/absence and types of the developing units on the basis of a detection result by the second detection unit and the data transmitted from the developing unit storage device by the communication device.
REFERENCES:
patent: 4542979 (1985-09-01), Percic
patent: 4841329 (1989-06-01), Kasamura et al.
patent: 4841336 (1989-06-01), Kusumoto et al.
Kohtani Hideto
Ohki Naoyuki
Sato Isamu
Suzuki Tadashi
Tomosada Masahiro
Canon Kabushiki Kaisha
Moses R. L.
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