Image reader having electrical and optical means for varying magnification
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United States of America Patent
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Mar 16, 1993
Issued Date -
N/A
app pub date -
Jul 18, 1991
filing date -
May 22, 1985
priority date (Note) -
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Abstract
This invention for reading an image of a document employs a optical projection magnification lens for projecting the image of a document; a movable image reading device for transforming the projected image into electrical signals and for providing a focussing adjustment; an electrical magnification process for varying electrically the size of the image projected on the image reading device; and a controller for controlling the optical projection lens, the electrical magnification process, and the movable reading device.
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