发明名称 Paper feed control in a printer
摘要 A paper feed system in a printer includes a platen for supporting a recording paper sheet, a paper feed drive motor, and a transmission gear mechanism for transferring the rotation of the paper feed drive motor to the platen so as to conduct an automatic paper feed operation. The paper feed system further allows a manual paper feed operation wherein the platen is manually rotated. A detection system is provided which detects the manual paper feed operation. If the manual paper feed operation has been conducted before the automatic paper feed operation, a compensating paper drive is first conducted when an automatic paper feed instruction is developed. In the compensating paper drive, the platen is first driven to rotate in the reverse direction by a predetermined amount and, then to rotate in the forward direction by the same amount, thereby compensating for the displacement of the paper sheet location caused by the backlash of the transmission gear mechanism during the manual paper feed operation.
申请公布号 US4645365(A) 申请公布日期 1987.02.24
申请号 US19850693458 申请日期 1985.01.22
申请人 SHARP KABUSHIKI KAISHA 发明人 IWAI, HIROJI
分类号 B41J11/38;B41J11/42;B41J19/18;(IPC1-7):B41J11/42;B41J23/32 主分类号 B41J11/38
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