发明名称 Multicolor ink ribbon control for a typewriter
摘要 A typewriter ribbon system comprising a ribbon drive device movable in response to the operation of a control device. The system allows the selection and printing of a specific longitudinal portion of a ribbon in the operative impact area.
申请公布号 US4037708(A) 申请公布日期 1977.07.26
申请号 US19760652449 申请日期 1976.01.26
申请人 XEROX CORPORATION 发明人 WALKER-ARNOTT, DAVID A.
分类号 B41J35/18;(IPC1-7):B41J33/20;B41J31/00 主分类号 B41J35/18
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