Optical reader and light source used for the same

Details Optical reader and light source used for the same Optical reader and light source used for the same

1989-07-31

1993-03-23

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Picture signal generator

358496, 2505781, 355 67, H04N 104, H04J 4014

Patent

active

051969505

ABSTRACT:
An optical reader includes a transport mechanism for transporting a document in a document transport direction. The transport mechanism includes a lower guide plate and an upper guide plate opposite to the lower guide plate so as to form a gap through which the document is transported. The lower guide plate has an opening window. A light source obliquely projects light along a projection optical axis onto the document through the opening window. A read element receives light reflected by the document and outputting an electrical signal corresponding to the received light. The read element has a read optical axis along which the light reflected by the document comes. The read optical axis and the projection optical axis intersect on the side of the upper guide plate outside of the gap.

REFERENCES:
patent: 4483609 (1984-11-01), Harada
patent: 4518249 (1985-05-01), Murata et al.
patent: 4733280 (1988-03-01), Irie
patent: 4806775 (1989-02-01), Uchida
patent: 4933817 (1990-06-01), Mochizuki et al.

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