发明授权
- 专利标题: Type setting device for printers
- 专利标题(中): 打印机类型设定装置
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申请号: US155147申请日: 1980-05-30
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公开(公告)号: US4380195A公开(公告)日: 1983-04-19
- 发明人: Fumihisa Hori , Mikio Miyajima
- 申请人: Fumihisa Hori , Mikio Miyajima
- 申请人地址: JPX Tokyo
- 专利权人: Alps Electric Co., Ltd.
- 当前专利权人: Alps Electric Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-73643[U] 19790531
- 主分类号: B41J7/48
- IPC分类号: B41J7/48 ; B41J7/34 ; B41J23/04 ; F16D13/08 ; B41J1/24
摘要:
A type setting device for printers, comprising a drive motor, a drive gear mounted on a rotary shaft and rotated by the drive motor, a type wheel having a plurality of type elements and rotatably mounted on the rotary shaft, a first spring clutch interposed between the drive gear and the rotary shaft, a ratchet gear fixedly mounted on the rotary shaft and selectively stopped to control the first spring clutch, and a second spring clutch adapted to prevent the rotary shaft from being rotated reversely with respect to the rotation of the drive gear. The drive gear can thus be kept rotating at all times so that it is unnecessary that the motor be started and stopped every time a character is printed. This allows a high-speed type selection and high-speed printing.
公开/授权文献
- US5595297A Protective container for substantially cuboidal objects 公开/授权日:1997-01-21
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