Typewriting machines – Sheet or web – Including friction-feed means
Patent
1995-06-07
1996-06-25
Terrell, William E.
Typewriting machines
Sheet or web
Including friction-feed means
271266, B41J 1302
Patent
active
055294146
ABSTRACT:
The present invention provides a paper feeding apparatus for a printer wherein a paper feed roller can be driven to rotate with a high degree of accuracy to achieve feeding of a paper sheet with a very high degree of accuracy. The paper feeding apparatus for a printer comprises a paper feed motor constituted from a stepping motor, a motor gear driven to rotate by the paper feed motor, a paper feed roller disposed for rotation for transporting a recording sheet to a printing position, the length of an outer periphery of the paper feed roller being set equal to N line feed distances, a paper feed gear for driving the paper feed roller to rotate, at least one transmission gear for transmitting rotating force of the motor gear to the paper feed gear, a detection element formed on the paper feed roller and indicating a reference position of the paper feed roller, a detector for detecting the detection element and generating a detection signal, and a control apparatus for receiving the detection signal from the detector and controlling driving of the paper feed motor so that, upon starting of paper feeding, the paper feed roller may be positioned normally at the reference position.
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Chiba Toshiyuki
Katano Keiji
Alps Electric Co. ,Ltd.
Bever Patrick T.
Kelly Tamara
Shoup Guy W.
Terrell William E.
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