发明公开
EP0382465A1 Drive circuit for driving a wire dot print head
失效
Treiberschaltungfüreinen Drahtpunktdruckknopf。
- 专利标题: Drive circuit for driving a wire dot print head
- 专利标题(中): Treiberschaltungfüreinen Drahtpunktdruckknopf。
-
申请号: EP90301211.0申请日: 1990-02-06
-
公开(公告)号: EP0382465A1公开(公告)日: 1990-08-16
- 发明人: Koike, Kiyofumi, c/o Seiko Epson Corporation , Tanaka, Minoru, c/o Seiko Epson Corporation
- 申请人: SEIKO EPSON CORPORATION
- 申请人地址: 4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo JP
- 专利权人: SEIKO EPSON CORPORATION
- 当前专利权人: SEIKO EPSON CORPORATION
- 当前专利权人地址: 4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo JP
- 代理机构: Miller, Joseph
- 优先权: JP31602/89 19890210; JP33111/89 19890213; JP289720/89 19891106
- 主分类号: B41J9/50
- IPC分类号: B41J9/50 ; B41J2/30
摘要:
A drive circuit for driving a wire dot print head including a driving coil (5), a lever (6) for causing a print wire (7) to strike a platen (16) under the action of the driving coil, a spring member (12) for urging the lever (6) to an initial position, and a damper member (13) for absorbing kinetic energy of the lever when it returns to the initial position, comprises a circuit (30, 32, 40, 50) for causing current to flow through the driving coil (5) when the lever (6) is returning to the initial position after having struck the platen (16) in the case where the temperature of the print head is outside a set temperature range. Thus, in operation, a braking force is applied to the lever (6) as it returns to the initial position.
公开/授权文献
- EP0382465B1 Drive circuit for driving a wire dot print head 公开/授权日:1993-06-16
信息查询
IPC分类: