专利检索 ap:("IBM") AND inv:"FORREST J" 第 1 页

1.

发明授权
Bi directional spacing mechanism for a printer including a proportional spacing printer 失效
标题翻译：用于打印机的BI方向间隔机构，包括一个比例间距打印机

公开(公告)号：US3713524A

公开(公告)日：1973-01-30

申请号：US3713524D

申请日：1970-06-30

申请人： IBM

发明人： FORREST J , LITKENHUS J , STEGER D

IPC分类号： B41J19/58 , B41J19/62 , B41J23/26

CPC分类号： B41J19/62 , B41J19/58 , B41J23/26

摘要： A character printing position is displaced by various increments in forward and reverse directions by premeasured motion delivered to a movable letter spacing member through a shuttling control rack. A variable stop member is moved to select the desired amount of spacing movement by arresting the control rack, which is yieldably driven via a spring through a potential stroke during each cycle.