Image scanner transparency adaptor

Details Image scanner transparency adaptor Image scanner transparency adaptor

1994-06-15

1995-11-14

Beatty, Robert

Photocopying

Contact printing

Light boxes

358487, G03G 2100

Patent

active

054671728

ABSTRACT:
A transparency adaptor for use in a flat bed type image scanner. The transparency adaptor which is to be displaced on the image window of the image scanner to project uniform "planar" light through a light-transmittable medium on which image to be scanned is printed so as to eliminate the need of complicated and sophisticated line light source upon the scanning window includes a shallow panel like casing inside which a pair of cold cathode fluorescent lamps (CCFLs) are disposed in a spaced and opposite manner to project light toward each other. A plate-like lighting guide is disposed between the CCFLs to uniformly distribute the light through a given planar area. A reflection sheet is provide to direct the light generated by the CCFLs toward a desired orientation. Light diffusers may be disposed along the out-going path of the light to more uniformly distribute the light through the given area. A cable is provided to supply direct current from the image scanner to an inverter mounted inside the transparency adaptor which converts the direct current to alternate current for starting the CCFLs.

REFERENCES:
patent: 4014607 (1977-03-01), Cherian
patent: 4989099 (1991-01-01), Koshiyouji et al.
patent: 5119212 (1992-06-01), Mori et al.
patent: 5239392 (1993-08-01), Suzuki et al.
patent: 5276534 (1994-01-01), Mutze et al.
patent: 5381245 (1995-01-01), Johnston et al.
patent: 5392100 (1995-02-01), Yoshida
patent: 5430289 (1995-07-01), Erickson et al.

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