Image forming device using polarized light

Details Image forming device using polarized light Image forming device using polarized light

1989-03-29

1990-02-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355231, 355 71, 355 79, G03G 1504, G03G 2100, G03B 2772, G03B 2762

Patent

active

049050451

ABSTRACT:
An image forming device such as a copying machine provides a linearly polarized beam of light to be made incident on a document to be scanned which is placed on a document table. A transparent cover with a polarization filter attached to it covers the document such that the user can ascertain, without too much light entering his eyes, whether the document is placed at a correct position on the table.

REFERENCES:
patent: 2252324 (1941-08-01), Land
patent: 3621231 (1971-11-01), Craig
patent: 3671104 (1972-06-01), Seino
patent: 4285577 (1981-08-01), Schuler
patent: 4338020 (1982-07-01), Yukawa et al.
patent: 4568181 (1986-02-01), Nishiyama
patent: 4595285 (1986-06-01), Miwa et al.

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