Image read device with reduced mirror vibration
AssigneeFuji Xerox Co., Ltd.
InventorsMasuji Ogaiwara, Takashi Tomaru
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Abstract
An image read device in which an original document located on a platen glass is exposed to and scanned with a light from a light source, to obtain a light image representative of a picture on the original, and the light image is guided through an optical system including at least first to third mirror elements into an image pick-up unit, is improved in that the natural frequencies of the first to third mirror elements are different from each other. In the image read device, the thicknesses of the second and third mirror elements may be different from each other. Further, the thickness of the first mirror element may be larger than the width of the reflecting surface of the first mirror element as viewed in the slow scan direction.
Claims9
In an image read device in which an original document located on a platen glass is exposed to and scanned with a light from a light source, to obtain a light image representative of a picture on said original, and the light image is guided through an optical system including at least first to third mirror elements to an image pick-up unit, the improvement in which the natural frequencies of said first to third mirror elements are different from each other.
An image read device in which an original document located on a platen glass is exposed to and scanned with a light from a light source, to obtain a light image representative of a picture on said original, and the light image is guided through an optical system including at least first to third mirror elements to an image pick-up unit, wherein
- the thickness of said first mirror element is larger than the width of the reflecting surface of said first mirror element is viewed in the slow scan direction, and
- the thicknesses of said second and third mirror elements are different from each other.
Dependencies are inferred from the claim text.