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Title:
IMAGE ILLUMINATING DEVICE, IMAGE READER, AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2008312175
Kind Code:
A
Abstract:

To provide an image illuminating device and an image reader which hardly cause a shadow even if the surface of an original is not flat, the shadow disabling an image to be properly read, and achieve suppression of power consumption in reading a monochromatic image.

The image illuminating device includes a first light emitting diode (LED) array 100A and a second LED array 100B each irradiating an area B to be irradiated of the original with light from respective sides which face each other with an optical path therebetween, of reading light guided to a CCD in reflection light from the original MS. These LED arrays are provided for selectively emitting white light and single-color light. Thus, when reading a color image, white light can be emitted from both sides and when reading a monochromatic image, single-color light can be emitted from both sides.


Inventors:
SHOJI KATSUNORI
YAMAKAWA KENJI
KIMURA TETSUYA
KUSUMOTO HIROSHI
YAMAZAKI KOICHI
NAGAO YOSHIAKI
TOMITA YASUMASA
SERIZAWA KEIICHI
SHIMAZU TAKEHISA
SHINKAWA SHOHEI
WATANABE KAZUNORI
Application Number:
JP2007160765A
Publication Date:
December 25, 2008
Filing Date:
June 18, 2007
Export Citation:
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Assignee:
RICOH KK
International Classes:
H04N1/04; G03B27/50; G03B27/54; H04N1/028; H04N1/10; H04N1/107
Attorney, Agent or Firm:
Toshi Kuroda