Image forming apparatus with TTL to ECL conversion between readi

Details Image forming apparatus with TTL to ECL conversion between readi Image forming apparatus with TTL to ECL conversion between readi

1992-11-23

1994-02-01

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

361752, 361816, H04N 140

Patent

active

052836584

ABSTRACT:
This invention relates to an image forming apparatus for forming an image using a pulse modulated signal based on an input image signal. A circuit for pulse-modulating an image signal and a circuit for driving a recording element are integrally formed on a single circuit board, or a circuit means for isolating a signal level of another circuit, e.g., a circuit for digitally processing an image signal or a circuit for generating a control signal from that of the pulse modulation circuit is arranged, so that a pulse modulation signal to be applied to the recording element is stabilized, and a high-frequency operation is allowed.

REFERENCES:
patent: 4339822 (1982-07-01), Kolodzey
patent: 4375065 (1983-02-01), Ohara
patent: 4894753 (1990-01-01), Wadell et al.
patent: 4905022 (1990-02-01), Nagasawa
patent: 4973863 (1990-11-01), Gotta, III et al.
Canon Inc.: Service Manual: Canon Laser Copier (CLC 1); Jul., 1987; pp. 3-13p.

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