Exposure apparatus for copying machines

Details Exposure apparatus for copying machines Exposure apparatus for copying machines

1980-08-07

1982-11-23

Truhe, J. V.

Photocopying

Including fiber optics

355 14E, 355 71, G03G 1504

Patent

active

043602614

ABSTRACT:
An exposure apparatus for copying machines comprises a light guiding unit having a variable aperture for guiding a light image through the aperture and onto a photoconductive drum. The light guiding unit comprises a thermally metamorphic member positioned near the drum and operatively connected to the variable aperture for controlling the size of the aperture as a function of the temperature of the photoconductive drum.

REFERENCES:
patent: 3743405 (1973-07-01), Morse et al.
patent: 4095884 (1978-06-01), Okamoto et al.

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