Illumination slit for a reproducing machine

Details Illumination slit for a reproducing machine Illumination slit for a reproducing machine

1976-05-27

1977-11-08

Griffin, Donald A.

Photocopying

Including fiber optics

355 51, 355 60, G03G 1528, G03B 2748, G03B 2770

Patent

active

040573427

ABSTRACT:
An improved exposure slit system for controlling the projected image illumination profile of an optical system of a reproducing machine. The optical system is arranged to stripwise view a document. The exposure slit system includes one exposure slit member arranged near the object plane and a second exposure slit member arranged near the image plane. The exposure slit profile for controlling illumination at the image plane is comprised in part by the profile of the exposure slit member at the image plane and in part by the profile of the exposure slit member near the object plane as projected at the image plane.

REFERENCES:
patent: 3539257 (1970-11-01), Hoyne et al.
patent: 3900258 (1975-08-01), Hoppner et al.
patent: 3912387 (1975-10-01), Brooke
patent: 3914044 (1975-10-01), Ogawa
patent: 3917393 (1975-11-01), Nier
patent: 3936150 (1976-02-01), Ikeda
patent: 3967895 (1976-07-01), Crook

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