发明授权
- 专利标题: Paper feed method and apparatus for a printer
- 专利标题(中): 打印机的送纸方式和装置
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申请号: US647894申请日: 1996-06-04
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公开(公告)号: US5713674A公开(公告)日: 1998-02-03
- 发明人: Takumi Nakayama , Hironaga Hongawa , Masashi Matsumoto , Hirohito Mukaiyama , Hitoshi Asai , Mitsuru Shimono , Satoshi Sakai , Yasuhiro Matsue
- 申请人: Takumi Nakayama , Hironaga Hongawa , Masashi Matsumoto , Hirohito Mukaiyama , Hitoshi Asai , Mitsuru Shimono , Satoshi Sakai , Yasuhiro Matsue
- 申请人地址: JPX Ishikawa
- 专利权人: PFU Limited
- 当前专利权人: PFU Limited
- 当前专利权人地址: JPX Ishikawa
- 优先权: JPX6-270223 19941006; JPX6-270224 19941006; JPX6-270225 19941006; JPX7-209532 19950817; JPX7-209533 19950817; JPX7-209556 19950817; JPX7-209702 19950817
- 主分类号: B41J3/28
- IPC分类号: B41J3/28 ; B41J11/20 ; B41J11/26 ; B41J11/30 ; B41J11/42 ; B41J11/48 ; B41J13/02 ; B41J13/10 ; B41J25/308 ; B41J29/38 ; B41J33/20
摘要:
It is an object of the invention to prevent a sheet of continuous-form paper from slackening when it is fed back in a printer capable of feeding both sheets of continuous-form paper and cut-form paper. According to the method for feeding back a sheet of continuous-form paper (6) of the present invention, in a paper feed unit including a pin feed device (7) arranged in an upstream of the continuous-form paper feed passage and also including a friction feed device (4, 5) in which both the pin feed device (7) and the friction feed device (4, 5) feed the sheet of continuous-form paper (6) and a circumferential speed of the friction feed device (4, 5) is a little higher than that of the pin feed device (7), a first amount of feed is set by which the sheet of continuous-form paper is not loosened between the friction feed device (4, 5) and the pin feed device (7) and also a second amount of feed is set which is larger than a difference between an amount of feed of the friction feed device (4, 5) and an amount of feed of the pin feed device (7) when the sheet of continuous-form paper is fed back by the first amount of feed, and the sheet of continuous-form paper is fed back by the first amount of feed when both the friction feed device (4, 5) and the pin feed device (7) are simultaneously reversed.