Scanner that controls stepping motor torque
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United States of America Patent
Stats
-
Jul 2, 2002
Grant Date -
Jun 27, 2002
app pub date -
Dec 21, 2000
filing date -
Dec 21, 2000
priority date (Note) -
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Abstract
A scanner has a housing, a scanning module for scanning a document, a driving module for driving the scanning module, and a control circuit for controlling the scanner. The driving module comprises a stepping motor for driving the scanning module forward and backward so that the scanning module is able to scan the entire area of the document. The control circuit controls the stepping motor to generate different torque so that the scanning module can scan the document at different speeds.
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