Driving control apparatus for stepping motor and image forming apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 30, 2012
Grant Date -
Oct 28, 2010
app pub date -
Apr 14, 2010
filing date -
Apr 24, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A driving control apparatus for a stepping motor is provided by which the productivity is improved while keeping the driving performance of the motor at a required level. To accomplish this, a driving control apparatus of the present invention drives a stepping motor by switching an excitation current supplied to a coil of a predetermined phase between a first excitation current value, a second excitation current value greater than the first excitation current value, and a third excitation current value still greater than the second excitation current value. In a first mode for generating a first driving force by the stepping motor, the first through third excitation current values are sequentially switched, whereas in a second mode for generating a second driving force smaller than the first driving force, the first and second excitation current values are sequentially switched.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully