公开(公告)号：US4487121A

公开(公告)日：1984-12-11

申请号：US574828

申请日：1984-01-30

申请人： James E. Carrington ,  John S. Gregor ,  Gerald R. Westcott

发明人： James E. Carrington ,  John S. Gregor ,  Gerald R. Westcott

IPC分类号： G06F3/12 ,  B41J7/96 ,  B41J9/44 ,  B41J9/52 ,  B41J29/393 ,  B41J29/46 ,  G06K15/00 ,  G06K15/08 ,  B41J1/18 ,  B41J3/42 ,  H02H3/00

CPC分类号： B41J29/393 ,  B41J9/52 ,  G06K15/08

摘要： A fault protection system for impression devices of a printer detects fault current in the impression devices during non-print operation, checks the impression devices individually to determine the location of the fault and then disconnects the impression devices from the power supply. The fault protection system also includes means for recording the fault location data in a storage means which can be called out for later use in repairing the impression devices.

摘要翻译： 打印机的印象装置的故障保护系统检测印刷装置在非打印操作期间的故障电流，分别检查印模装置以确定故障位置，然后断开印模装置与电源的连接。 故障保护系统还包括用于将故障位置数据记录在存储装置中的装置，该存储装置可以被调出以备以后用于修复印象装置。

公开(公告)号：US5046413A

公开(公告)日：1991-09-10

申请号：US593138

申请日：1990-10-05

申请人： John S. Gregor ,  Clarence C. Hubbell ,  Susan K. Lichtensteiger

发明人： John S. Gregor ,  Clarence C. Hubbell ,  Susan K. Lichtensteiger

IPC分类号： B41J7/36 ,  B41J1/20 ,  B41J9/52 ,  B41J29/00

CPC分类号： B41J9/52 ,  B41J1/20

摘要： A system and method for automatically compensating for inaccuracies in the positioning of the timing mark sensor of a band line printer. A selected hammer is operated to impact a test character and an adjacent space between characters or a space provided by a blank character on the type band. The flight times of the hammer for the character and space impacts are measured under control of a microprocessor programmed to locate the edge of the test character and to compute a timing adjustment value for use by the printer control to obtain centered impacts of characters during printing.