Led array, print head, and electrophotographic printer

Details Led array, print head, and electrophotographic printer Led array, print head, and electrophotographic printer

1998-04-09

2000-05-16

Moses, Richard

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347130, B41J 245

Patent

active

060644184

ABSTRACT:
In an array of light-emitting diodes formed by diffusion of an impurity into a semiconductor substrate, the width of the diodes in the array direction is between four-tenths and five-tenths of the array pitch. The width of the windows above the diodes is between three-tenths and four-tenths of the array pitch. Between one-fourth and one-half of the surface area of each diode is covered by an electrode making contact with the diode through the window. The distance from the centers of the light-emitting diodes at the ends of the array to the edges of the substrate is between twenty-five and sixty-five hundredths of the array pitch.

REFERENCES:
patent: 5946022 (1999-08-01), Kamimura
Yoshihiro Takekida, "Design of Optical Printers", Triceps, 1985, pp. 121-133.

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