Illuminating device for a scanner, and a print reading...

Details Illuminating device for a scanner, and a print reading... Illuminating device for a scanner, and a print reading...

2006-07-11

2006-07-11

Chau, Minh (Department: 2854)

Printing

Processes

Condition responsive

C101S483000, C359S197100

Reexamination Certificate

active

07073445

ABSTRACT:
An illuminating unit includes a pair of fluorescent lamps each having a prism sheet mounted peripherally thereof to act as a condensing member, and concave mirrors for reflecting light emitted from the fluorescent lamps to printing paper acting as a print. The prism sheet acts as a condensing member for condensing the light diffused axially of each fluorescent lamp, in directions perpendicular to the axis of the fluorescent lamp. The prism sheet has minute projections approximately in the shape of triangular prisms formed on a surface thereof continually along the axis of the fluorescent lamp and projecting in the directions perpendicular to the axis of the fluorescent lamp.

REFERENCES:
patent: 6539863 (2003-04-01), Shiraishi
patent: 6570671 (2003-05-01), Yamaguchi et al.
patent: 6601512 (2003-08-01), Yamamoto et al.
patent: 6729239 (2004-05-01), Edamitsu et al.
patent: 56164362 (1981-12-01), None
patent: 2002-355950 (2002-12-01), None

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