Led head

Details Led head Led head

1996-07-01

2000-12-26

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347237, 347145, B41J 247

Patent

active

061667579

ABSTRACT:
Gray scale printing data with compensation for dispersion is stored in a first shift register, the data is sliced into respective bits and is fetched by means of a second shift register and AND-gates. Standard resistances are scanned by means of a third shift register and switches, in synchronization with the data retrieval, for changing standard current, and light emitting current to light emitting bodies is changed according to the standard current.

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