Light emitting element module and printer head using the same

Details Light emitting element module and printer head using the same Light emitting element module and printer head using the same

1997-09-15

1999-12-07

Cariaso, Alan

Illumination

Plural light sources

With support

362800, 347238, 347130, 257 88, 257910, F21V 2100, B41J 245

Patent

active

059971525

ABSTRACT:
A light emitting element module is provided including a board and plural chips arranged in the form of an array on the board. Each chip includes at least one light emitting element having a light emitting function and/or a photosensing function. The chips are arranged on the board so that the upper surfaces of adjacent chips which are located opposite to the board are positionally displaced in the height direction of the chips by at least the distance corresponding to the thickness of the chips. This uneven chip arrangement in the height direction may be established by alternately arranging thicker chips and thinner chips on the board.

REFERENCES:
patent: 4857801 (1989-08-01), Farrell
patent: 5519430 (1996-05-01), De Cock
patent: 5677552 (1997-10-01), Ogura
patent: 5691760 (1997-11-01), Hosier
"Light Emitting Diode", Yasuo Okuno, pp. 164-165, Published by Sangyo Tosho Co., Ltd. on Jan. 20, 1993.

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