Image forming apparatus with light emitting element head

Details Image forming apparatus with light emitting element head Image forming apparatus with light emitting element head

1996-07-31

1998-09-15

Beatty, Robert

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347238, 399220, G01D 1514

Patent

active

058086501

ABSTRACT:
An image forming apparatus includes an LED array head to which a vibration applying unit driven by a driver is attached. The LED array head is shifted by a predetermined amount in a direction at an angle .theta. relative to the axis of a photosensitive drum. LEDs are driven to emit the light in accordance with video data before and after the shift, and an electrostatic latent image according to the video data is formed on the photosensitive drum. Since the LED array head is shifted in a diagonal direction relative to the axis of the photosensitive drum, it is possible to form high-resolution dot lines in the axial direction even if the photosensitive drum is rotated at a constant speed.

REFERENCES:
patent: 4090206 (1978-05-01), Pfeifer et al.
patent: 4427275 (1984-01-01), Stalzer
patent: 4475115 (1984-10-01), Garbe et al.
patent: 4566015 (1986-01-01), MacKenzie
patent: 4743927 (1988-05-01), Sasaki
patent: 5515097 (1996-05-01), Munechika et al.

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