Beam recorder forming low density dots

Details Beam recorder forming low density dots Beam recorder forming low density dots

1991-05-02

1993-11-02

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358298, H04N 121

Patent

active

052587800

ABSTRACT:
An image forming apparatus includes a semiconductor laser unit for emitting a laser beam, a photosensitive drum which rotates in a first direction, a scanning optical system for making the laser beam scan the photosensitive drum in a second direction perpendicular to the first direction, wherein an electrophotography process is carried out on the surface of the photosensitive drum, a data generator for generating intensity data for each dot in an image in accordance with image information supplied from an external controller, and a laser driver for outputting a driving signal which drives the semiconductor laser unit, the driving signal having a pulse width and a level for each dot in an image, the pulse width being a predetermined value less than a value corresponding to an interval between adjacent dots formed in a direction parallel to the first direction, and the level corresponding to the intensity data generated by the data generator.

REFERENCES:
patent: 4714954 (1987-12-01), Yoshinaka et al.
patent: 4873537 (1989-10-01), Ohta
patent: 4894524 (1990-01-01), Murase et al.

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