B41J 9/52
For checking the operation of print hammers
Official title: for checking the operation of print hammers
B41J9/52 (For checking the operation of print hammers) appears on 18 US grants and 0 published applications in this corpus.
Search patents in B41J- Granted patents
- 18
- Published applications
- 0
- Assignees
- 12
- Inventors
- 41
- Latest grant
- 24 Feb 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Printer coil temperature sensor and method24 Feb 1998US 5,720,561 APrintronix, Inc.
- Impact printer which can detect partial defects in coils21 May 1996US 5,518,326 AFujitsu Limited
- Print hammer arrangement in dot line printer minimizing number of hammers simultaneously fired23 Nov 1993US 5,263,782 AHitachi Koki Co., Ltd.
- Print pressure retrival from ascending order table3 Mar 1992US 5,092,692 ACanon Kabushiki Kaisha
- Method and apparatus for band printing with automatic home compensation10 Sep 1991US 5,046,413 AInternational Business Machines Corporation
No published applications in this class yet.
Most cited
By later US patents
- System for predicting or detecting a fault in a solenoid utilization system12US 3,988,664 ABurroughs Corporation · 1976
- Printer having variable hammer release drive11US 4,280,404 APrintronix, Inc. · 1981
- Print tip contact sensor for quiet impact printer10US 4,678,355 AXerox Corporation · 1987
- Bi-directional drive print wire actuator with forward-velocity and reverse-position closed loop feedback control9US 4,523,867 AGenicom Corporation · 1985
- Stylus printer impact energy control8US 4,162,858 AU. S. Philips Corporation · 1979