Method and apparatus for compensation of LED-array output power

Details Method and apparatus for compensation of LED-array output power Method and apparatus for compensation of LED-array output power

1986-12-01

1988-02-23

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358302, 346107R, 346160, H04N 121, H04N 123, G01D 942, G01D 1514

Patent

active

047274280

ABSTRACT:
In a method and an apparatus for compensation of any variation that occurs in the output power or luminous energy of a LED array used in electrophotographic printing, the time for applying a current to one line of the LED array is optimally divided into a fundamental on-time for constant current application to the individual elements of the LED array and a compensational on-time for selective current application thereto in such a manner that the exposure values on a photosensitive medium become uniform.

REFERENCES:
patent: 4455562 (1984-06-01), Dolan et al.
patent: 4563747 (1986-01-01), Tidd
patent: 4596995 (1986-06-01), Yamakawa et al.

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