Image reader with variable magnification dependent on desired dot density
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United States of America Patent
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Mar 17, 1992
Issued Date -
N/A
app pub date -
Oct 30, 1990
filing date -
May 22, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An image reader for reading an image on a document having apparatus for projecting an image of the document optically to permit optical magnification. An image reading device transforms the projected optical image into electrical signals which can be transformed into bi-level signals with the picture element density of the bi-level signals varied. Apparatus is provided for designating picture element density and for controlling the optical magnification in accordance with the designated picture element density.
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