B41J 29/54
Locking devices applied to printing mechanisms
B41J29/54 (Locking devices applied to printing mechanisms) appears on 106 US grants and 103 published applications in this corpus.
Search patents in B41J- Granted patents
- 106
- Published applications
- 103
- Assignees
- 48
- Inventors
- 243
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 3 |
| 2004 | 4 | 4 |
| 2005 | 4 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 3 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 4 |
| 2018 | 4 | 9 |
| 2019 | 8 | 5 |
| 2020 | 5 | 20 |
| 2021 | 18 | 10 |
| 2022 | 7 | 2 |
| 2023 | 6 | 5 |
| 2024 | 2 | 10 |
| 2025 | 7 | 5 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Printer selectively executing one of plurality of different modes including first and second printing modes11 Aug 2026US 12,703,195 B2Brother Kogyo Kabushiki Kaisha
- Printhead opening system and method14 Jul 2026US 12,679,126 B2Brady Worldwide, Inc.
- Fluid-ejection device air purger detection14 Apr 2026US 12,600,145 B2Hewlett-Packard Development Company, L. P.
- Laser containment structure for a laser printhead17 Feb 2026US 12,552,189 B2Zebra Technologies Corporation
- Supply manifold trigger arms30 Dec 2025US 12,508,812 B2Hewlett-Packard Development Company, L. P.
- Electrical device8 Oct 2026US 2026/0307412 A1Canon Kabushiki Kaisha
- Printer24 Sep 2026US 2026/0285070 A1Etria Co., Ltd.
- Electronic apparatus and cable protecting unit24 Sep 2026US 2026/0285072 A1Seiko Epson Corporation
- Fluid-ejection device air purger detection23 Jul 2026US 2026/0208495 A1Hewlett-Packard Development Company, L. P.
- Image forming system including drying device that dries ink28 May 2026US 2026/0145441 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Apparatus and method for preventing disclosure through user-authentication at a printing node401US 5,633,932 AIntel Corporation · 1997
- Transportable ink jet printer apparatus19US 6,494,633 B1Lexmark International, Inc. · 2002
- Recording apparatus for controlling recording in accordance with battery capacity14US 5,673,070 ACanon Kabushiki Kaisha · 1997
- Printer equipped with a mechanism for locking the carriage of a printing head12US 4,773,773 AKabushiki Kaisha Toshiba · 1988
- Cover locking/unlocking mechanism and a printer having the cover locking/unlocking mechanism10US 6,916,052 B2Seiko Epson Corporation · 2005