Original-detection method and device, and original-processing de

Details Original-detection method and device, and original-processing de Original-detection method and device, and original-processing de

1995-10-19

1998-06-09

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358449, H04N 104

Patent

active

057643806

ABSTRACT:
An original-detection device includes a pressing member for pressing an original on an original-mount from a side opposite to a surface illuminated by scanning light, an absorption member, provided on an original-pressing surface of the pressing member, for absorbing light of a predetermined wavelength region within an invisible region, a filter for transmitting light of the predetermined wavelength region of reflected light obtained by projecting the scanning light onto the original or the original-pressing surface, a photosensor for sensing light transmitted through the filter, and a detection circuit for detecting the original on the original-mount based on an output from the photosensor.

REFERENCES:
patent: 4439790 (1984-03-01), Yoshida
patent: 4686577 (1987-08-01), Arimoto
patent: 4698511 (1987-10-01), Sueda et al.
patent: 5001574 (1991-03-01), Shimizu et al.
patent: 5453611 (1995-09-01), Oozu
patent: 5503904 (1996-04-01), Yoshinaga et al.

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