Photocopying – Contact printing – Light boxes
Patent
1991-03-01
1992-08-25
Grimley, A. T.
Photocopying
Contact printing
Light boxes
250324, 355208, G03G 1502
Patent
active
051423294
ABSTRACT:
A method and apparatus applicable to electrophotographic image forming equipment or similar equipment for positioning a corona discharger relative to a photoconductive element. Two charge currents caused to flow through axially opposite end portions of the photoconductive element by a corona discharger are detected, and their difference is determined. The inclination of a discharge electrode included in the corona discharger relative to the photoconductive element is so adjusted as to reduce the difference to zero.
REFERENCES:
patent: 4320957 (1982-03-01), Brown et al.
Fry et al., "Corona Assembly and Alignment", May 1981, vol. 23, No. 12, p. 5619, IBM Tech. Disclosure.
Grimley A. T.
Lee Shuk Y.
Ricoh & Company, Ltd.
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