Means and method of symmetrical energization of individual array

Details Means and method of symmetrical energization of individual array Means and method of symmetrical energization of individual array

1985-12-23

1987-12-08

Goldberg, E. A.

Recorders

Light or beam recording

Including record receiver or handling means therefor

46107R, 358302, G01D 942, G01D 900, H04N 121

Patent

active

047121165

ABSTRACT:
A method and means of exposing a movable light-sensitive layer by means of an array of LED's are disclosed. The invention comprises energizing for each image line and for a variable time each LED in the array symmetrically with respect to an imaginary line extending parallel to the array by using comparator circuits connected to a signal generator for a selected period of time used to generate a uniformly decreasing and increasing signal and to buffers for storing a corrected image signal so that the LED's are energized by the compared signal from an associated comparator circuit.

REFERENCES:
patent: 4571602 (1986-02-01), De Schamphelaere
patent: 4575739 (1986-03-01), De Schamphelaere
patent: 4596995 (1986-06-01), Yamakawa

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