发明公开
- 专利标题: Ribbon feed system for a matrix printer
- 专利标题(中): 用于矩阵打印机色带进料系统。
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申请号: EP81108559.6申请日: 1981-10-20
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公开(公告)号: EP0054664A2公开(公告)日: 1982-06-30
- 发明人: Applegate, Steven Lewis , Molloy, James John
- 申请人: International Business Machines Corporation
- 申请人地址: Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构: Vekemans, André (BE)
- 优先权: US218228 19801219
- 主分类号: B41J3/20
- IPC分类号: B41J3/20 ; B41J3/16 ; B41J33/00 ; B41J33/26
摘要:
ribbon feed system for a matrix printer utilizes metering rollers (44,46) located on the printhead carrier (18) to maintain a substantially zero ribbon velocity relative to the receiving medium (12) with an on-carrier ribbon feed. By coordinating roller rotation with carrier motion, relative motion that would tend to cause smearing during mark formation is avoided. For printers that inject current into the ribbon to cause printing, friction drag is reduced and tension control is simplified by collecting current at the metering rollers for return to the printhead energizing circuitry. Such dual use of the metering rollers takes advantage of the firm intimate contact that exists for metering to establish a high quality electrical connection.
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