Original illuminating device of a copying machine
AssigneeMita Industrial Co., Ltd.
InventorYoichiro Irie
Life of this patent
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Abstract
A novel original illuminator of electrophotographic copying machine capable of leading the majority of light from the illuminant onto the original surface placed on the contact glass by applying the condenser mirror to allow the light not oriented to the original to reflect itself by a mirror opposite from the condenser mirror before eventually leading light to the illuminant over again.
Claims5
A device for illuminating an original document on an electrophotographic copying machine and to prevent a tip shadow on a copy obtained from the machine, said device comprising a contact glass for supporting an original document, an illuminant, a condenser mirror, and a second mirror which is opposite from and faces toward said condenser mirror, said condenser mirror being provided with a shape capable of guiding a majority of light from said illuminant onto an original document which is placed on said contact glass, said second mirror facing said condenser mirror being located in a path of light from the illuminant and condenser mirror but being displaced from direct paths of light which extend from the illuminant and condenser mirror to the original document, said condenser mirror having a shape and orientation capable of reflecting light back to said illuminant.
Dependencies are inferred from the claim text.