Non-contact optical print head for image writing apparatus

Details Non-contact optical print head for image writing apparatus Non-contact optical print head for image writing apparatus

1989-12-19

1991-03-12

Reinhart, Mark J.

Recorders

Light or beam recording

Including record receiver or handling means therefor

346160, B01D 900, H04N 121

Patent

active

049996487

ABSTRACT:
In a print head that has a plurality of inline light beams for simultaneously writing a corresponding plurality of lines of an image on a photoreceptor surface, the imaged spot size and center-to-center spacing are independently settable by projecting the light beams onto a diffusion screen which is spaced from the light sources by an amount needed to achieve a desired spot size. The spots on the diffusion screen are then imaged onto the photoreceptor surface by imaging optics with a desired magnification to achieve a desired center-to-center spacing between spots on the photoreceptor surface. For a given magnification value the photoreceptor spot size can be set by the spacing between the light source and the diffusion screen independent of the center-to-center spacing between the spots.

REFERENCES:
patent: 4899222 (1990-02-01), Price
patent: 4928118 (1990-05-01), Lekseh et al.

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