发明授权
- 专利标题： Paper tension adjusting device and method for a printer
- 专利标题（中）： 纸张张力调节装置和打印机的方法
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申请号： US405290申请日： 1989-09-11
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公开(公告)号： US5018888A公开(公告)日： 1991-05-28
- 发明人: Hiroshi Nishimura , Masao Miyasaka , Nobuhiko Itoh , Toshio Hiki , Akira Igarashi
- 申请人： Hiroshi Nishimura , Masao Miyasaka , Nobuhiko Itoh , Toshio Hiki , Akira Igarashi
- 申请人地址： JPX Ibaraki
- 专利权人： Hitachi Koki Co., Ltd.
- 当前专利权人： Hitachi Koki Co., Ltd.
- 当前专利权人地址： JPX Ibaraki
- 优先权： JPX63-235261 19880920
- 主分类号： B41J9/46
- IPC分类号： B41J9/46 ; B41J11/32 ; B41J11/42 ; B41J15/16
摘要：
A paper tension adjusting device in which one of the tractors with feeding pins changing feeding apertures in the paper is movable widthwise to adjust widthwise paper tension. The desired tension is determined from paper thickness which is in turn determined from the hammer flight time. Lengthwise tension is adjusted by adjusting paper clampers separated from the tractors. The tension is both widthwise and lengthwise directions is determined by optically sensing the positions of the feeding pin with respect to the aperture in which that pin is engaged.