Optical write head

Details Optical write head Optical write head

1988-07-29

1989-02-07

Shaw, Clifford C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

346160, H04N 123

Patent

active

048035653

ABSTRACT:
An optical write head for an electrostatic dot-matrix image printing system which includes a plurality of controlled light emission element row-arrays positioned parallel and spaced in the direction perpendicular to the row-wise direction a distance equal to an integer multiple of the desired dot image-pitch S measured in the perpendicular direction, corrected by the fraction S/N where N is the number of row-arrays. A timed electrode drive circuit activates the arrays sequentially, and grid mask elements extending transversely across the row-arrays control emission from the individual light emission elements in an activated array, to minimize the number of drive circuit switching elements. A series-to-parallel signal conversion and storage circuit preprocesses the recording signal of the image to be printed.

REFERENCES:
patent: 3624661 (1971-11-01), Shebanaw et al.
patent: 4357625 (1982-11-01), Lamberts et al.
patent: 4524372 (1985-06-01), De Cock et al.

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