Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
2011-07-19
2011-07-19
Safaipour, Houshang (Department: 2625)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S475000, C358S486000, C358S482000
Reexamination Certificate
active
07982924
ABSTRACT:
A compact image reading device is provided in which a plurality of illumination devices are not needed, and by which a hologram image can be accurately identified in a short period. The image reading device includes a first light source, arranged in a main-scanning direction on a face perpendicular to the conveying direction, for emitting light having a plurality of wavelengths, a second light source, arranged, in parallel to the first-light-source arrangement, on the same face on which the first light source is provided, or in the periphery thereof, for emitting light having a plurality of wavelengths, a light guide for guiding light from the first and second light sources in a sub-scanning direction, and the light guide, having total reflection faces whose illumination angles are different from each other, for irradiating a portion, of a hologram region, to be irradiated with light after totally reflected by the reflection faces, a lighting control means for controlling in a time division manner an exposure ratio between light quantities incident on the total reflection faces of the light guide, a lens assembly for focusing reflection light reflected by a reflective portion of a target positioned at the portion to be light-irradiated, and a sensor for receiving, for each divided time, light focused by the lens assembly, whereby the device is configured to enable detection of the hologram region in the target.
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Endo Takafumi
Nokami Yohei
Mitsubishi Electric Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Safaipour Houshang
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