Photocopying – Contact printing – Light boxes
Patent
1987-09-22
1990-11-27
Braun, Fred L.
Photocopying
Contact printing
Light boxes
355245, 355296, 355299, G03G 2100, G03G 1506
Patent
active
049740202
ABSTRACT:
An image-forming machine, such as an electrostatic copying machine, having a number of optional features. A display device is provided for displaying the number or type of toner cartridge loaded in the main body of a developing device. An image-forming condition adjusting device is provided for adjusting the image-forming conditions in response to a toner cartridge loaded in the main body. A life signal producing device is provided for signaling the end of the service life of the electrostatographic material. The life signal is produced in response to a cartridge replacement signal and a final cartridge signal. Alternatively, the life signal is produced in response to a final cartridge signal and either a signal indicating a predetermined number of rotations of the image-bearing member or a cartridge replacement signal, whichever is produced earlier. A toner removing blade is held at a non-operating position when a process unit is detached from the image-forming machine and positioned in a unit holding box. When a predetermined number of toner cartridges have been selectively loaded and detached into and from the developing device, loading of a new toner cartridge is prevented. When a cartridge has been loaded and detached into and from the main body of the developing device, loading of another toner cartridge of the same type is prevented.
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Akiyama Kazunori
Takamatsu Junichi
Braun Fred L.
Mita Industrial Co.
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