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    • 3. 发明授权
    • Dual pitch impact printing mechanism and method
    • 双桨冲击打印机构及方法
    • US4152981A
    • 1979-05-08
    • US803322
    • 1977-06-03
    • Anthony P. SapinoDonald S. SwatikRobert E. CostelloVahe H. MalakianKenneth Staugaard
    • Anthony P. SapinoDonald S. SwatikRobert E. CostelloVahe H. MalakianKenneth Staugaard
    • B41J1/20B41J7/36B41J9/32B41J19/32G06K15/08B41J9/12
    • B41J19/32B41J1/20B41J9/32
    • An impact printer is provided which is capable of printing at either 10 characters per inch (standard pitch) or 15 characters per inch (compressed pitch) by changing the type character carrying member, such type carring member including multiple font character sets thereon. The type character carrying members or bands include timing marks thereon for detecting or sensing the type band (standard or compressed pitch), the type character font set, and for tracking the type characters on the band. The printer also includes time shared hammer means which are movable or shifted a precise distance of 1/10 inch for a standard pitch band or a precise distance of 1/15 inch for a compressed pitch band, such movement being operable by control mechanism responsive to pulses derived from the timing marks relative to the horizontal position mechanism and the type band on the printer (standard or compressed pitch).
    • 提供一种冲击式打印机,其能够通过改变类型字符承载构件来以每英寸10个字符(标准间距)或15个字符每英寸(压缩间距)进行打印,这种类型的挂钩构件包括多个字体字符集。 类型字符携带构件或带包括用于检测或感测类型频带(标准或压缩音调),类型字符字体集合以及用于跟踪频带上的类型字符的定时标记。 打印机还包括时间共享锤装置,其可移动或移动1/10英寸的精确距离用于标准间距带或1/15英寸的精确距离用于压缩音调带,这种移动可由控制机构操作,响应于 从定时标记相对于水平位置机构和打印机上的类型带(标准或压缩间距)产生的脉冲。