Image forming apparatus

Details Image forming apparatus Image forming apparatus

1993-04-02

1994-07-19

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358461, 358463, 358455, 358448, 358296, 358469, 382 53, H04N 140

Patent

active

053314328

ABSTRACT:
An apparatus for forming an image with modulated image lights which are obtained by modulating an image light in accordance with image signals, including a reference pattern signal generation circuit, a comparator to compare image signals with a reference pattern signal so as to produce a pulse width modulation signal, and a circuit to shift the level of the image signal of either a maximum or minimum value to a level out of the amplitude of the reference pattern signal.

REFERENCES:
patent: 4709250 (1987-11-01), Takeuchi
patent: 4800442 (1989-01-01), Riseman et al.
patent: 4864419 (1989-09-01), Saito et al.

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