Dot printer having means for correcting intensity variations

Details Dot printer having means for correcting intensity variations Dot printer having means for correcting intensity variations

1984-06-14

1986-06-24

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358302, H04N 124

Patent

active

045969957

ABSTRACT:
A dot printer has an LED array printer head consisting an array of LEDs, drivers for independently driving the LEDs, and time control circuits for controlling ON or OFF times of the LEDs by energizing the drivers in accordance with image data and correction data stored in a memory. The LEDs can be divided into blocks which can be sequentially driven. Variations in mechanical and electrical characteristics of the LEDs are corrected to allow formation of a high-resolution image or a halftone image.

REFERENCES:
patent: 4455578 (1984-06-01), Fearnside

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