公开(公告)号：US3921517A

公开(公告)日：1975-11-25

申请号：US48171874

申请日：1974-06-21

Applicant: IBM

Inventor： BARCOMB JAMES G ,  CONANT ROBERT K

IPC: G06K15/00 ,  B41J9/12 ,  B41J9/14

CPC classification number: B41J9/14 ,  B41J9/12

Abstract: In a printer using print hammers covering two adjacent print positions, random firing of the print hammers is made possible by using additional storage means for storing three bits for each print position. When a print hammer is fired for one of a pair of associated print positions, a bit is loaded into the storage for the other of the associated print positions and the bit count is advanced each time the hammer is optioned to fire for the associated print position. When the bit count reaches 0 0 0 the print hammer may be fired again. For an intermediate count firing of the print hammer is inhibited.

Abstract translation: 在使用覆盖两个相邻打印位置的打印锤的打印机中，通过使用用于存储每个打印位置的三位的附加存储装置，使得打印锤的随机点火成为可能。 当针对一对相关联的打印位置中的一个打印打印锤时，对于相关联的打印位置中的另一个打印位置将一个位加载到存储器中，并且每当锤被选择为相关联的打印位置发射时，位计数被提升 。 当位计数达到0 0 0时，打印锤可能会再次点火。 对于打印锤的中间计数点火被禁止。