LED printing array current control

Details LED printing array current control LED printing array current control

1989-10-02

1991-07-23

Reinhart, Mark J.

Recorders

Light or beam recording

Including record receiver or handling means therefor

358296, H04N 121

Patent

active

050347578

ABSTRACT:
An image write bar has a plurality of LEDs arranged in a linear array. The output of the LEDs is optimized by controlling current flow through each LED via a distributed or discrete resistive network. The current flow through each LED is dependent upon whether the LED is in isolation or in combination with original LEDs. The resistor network ensures that the inactivated LED output are all at a constant level.

REFERENCES:
patent: 4424524 (1984-01-01), Daniele
patent: 4553148 (1985-11-01), Behrens et al.
patent: 4587717 (1986-05-01), Daniele et al.
patent: 4689694 (1987-08-01), Yoshida
patent: 4731673 (1988-03-01), Yamakawa
patent: 4751654 (1988-06-01), Lyyra
patent: 4752806 (1988-06-01), Haas et al.

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