Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1988-07-19
1989-12-26
Evans, Arthur G.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
3461601, G01D 1500
Patent
active
048901253
ABSTRACT:
An image forming apparatus according to this invention includes a main charger for uniformly charging a surface of a photoconductive drum, an electrostatic latent image forming unit for forming an electrostatic latent image on the drum charged by the main charger, a developing unit for making visible the electrostatic latent image formed on the drum by the electrostatic latent image forming unit, and a transfer charger for transferring the image made visible by the developing unit onto a paper sheet. Power supply circuits supply operation voltages to the main charger and the transfer charger, and currents flowing from the power supply circuits to the main charger and the transfer charger are detected by current detectors. The current values detected by the current detectors are compared with corresponding predetermined values by comparators. A controller controls operations of the electrostatic latent image forming unit and the power supply circuits in accordance with the comparison results from the comparators. When the detected current is abnormal, the controller stops the operations.
REFERENCES:
patent: 4748465 (1988-05-01), Tsilibes et al.
Egawa Jiro
Ide Naoaki
Evans Arthur G.
Kabushiki Kaisha Toshiba
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