Method and device for controlling exposure beams

Details Method and device for controlling exposure beams Method and device for controlling exposure beams

1986-05-12

1989-12-12

Kemeny, E. S.

Boots, shoes, and leggings

358 75, 346108, G06K 120

Patent

active

048872253

ABSTRACT:
A D-A converter outputs feed pitch error signals on an exposure head. The error signals are inverted to be supplied to a multiplier, and non-inverted to be supplied to a second multiplier. The exposure head radiates multiple beams, and ON/OFF dot signal for odd channels thereof are supplied to the multiplier and ON/OFF dot signals for even channels are supplied to the second multiplier respectively. The multipliers multiply the supplied signals, whereby values of the ON/OFF dot signals are changed in response to the errors. Thus, the beams outputted from the respective channels are controlled in power intensity, whereby diameters of printing spots on photosensitive material are changed per channel.

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patent: 4630223 (1986-12-01), Schoon
patent: 4651287 (1987-03-01), Tsao
patent: 4661918 (1987-04-01), Buschmann et al.

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