LED head for illuminating a surface of a photoconductive body

Details LED head for illuminating a surface of a photoconductive body LED head for illuminating a surface of a photoconductive body

1998-04-10

2000-02-15

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347241, 347242, 347245, B41J 2235

Patent

active

060258632

ABSTRACT:
An LED head for illuminating a surface of a photoconductive body includes an LED circuit board, lens assembly (SLA), SLA holder, base, and engagement member. The LED circuit board has LED arrays mounted thereon. The lens assembly has an optical axis and focuses light emitted from the LED arrays on the surface of the photoconductive body. The SLA holder has two opposing walls to hold the lens assembly therebetween. One of the opposing walls has a first reference surface with which the optical axis of the lens assembly is in a predetermined positional relation and urges the lens assembly against the other of the opposing walls. The base houses the LED circuit board and the SLA holder therein. The base has a second reference surface such that the optical axis is placed in position with respect to the LED arrays when the second reference surface is in intimate contact with the first reference surface. An engagement member holds the holder and the base together so that the first and second reference surfaces are in intimate contact with each other.

REFERENCES:
patent: 5254847 (1993-10-01), Hata et al.
patent: 5291039 (1994-03-01), Ogata et al.
patent: 5403102 (1995-04-01), Yokoyama
patent: 5808718 (1998-09-01), Aikoh et al.

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