Optical sensor protective member

Details Optical sensor protective member Optical sensor protective member

1988-02-12

1989-04-04

Pearson, Charles

Typewriting machines

Means auxiliary to typewriting function

Indicator means

400711, 250561, 250571, G01N 2186

Patent

active

048181323

ABSTRACT:
A protective member in the form of an opaque brush operates as a non-reflective shield to an optical sensor while protecting such sensor against ambient light. The brush also provides for removal of contamination from the surface of the optical sensor as a slip or like document is inserted along a guide by causing the brush to swing across such surface.

REFERENCES:
patent: 3805027 (1974-04-01), Azure
patent: 3824401 (1974-07-01), Suzuki
patent: 3844661 (1974-10-01), Birkett et al.
patent: 4074217 (1978-02-01), Yanagawa
patent: 4696246 (1987-09-01), Rohr et al.
patent: 4697089 (1987-09-01), Oraye
patent: 4727399 (1988-02-01), Matsumoto
patent: 4752696 (1988-06-01), Matsushita et al.

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