G03G 2215/0617
Contact development
Official title: contact development (i.e. the developer layer on the donor member contacts the latent image carrier)
G03G2215/0617 (Contact development) appears on 73 US grants and 48 published applications in this corpus.
Search patents in G03G- Granted patents
- 73
- Published applications
- 48
- Assignees
- 26
- Inventors
- 205
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 0 | 5 |
| 2006 | 2 | 1 |
| 2007 | 6 | 4 |
| 2008 | 1 | 5 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 4 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 3 | 4 |
| 2021 | 1 | 2 |
| 2022 | 4 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 4 |
| 2025 | 3 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus28 Apr 2026US 12,613,482 B2Canon Kabushiki Kaisha
- Image forming apparatus having connector for detachable process cartridge20 Jan 2026US 12,529,979 B2Canon Kabushiki Kaisha
- Image forming apparatus1 Apr 2025US 12,265,342 B2KYOCERA Document Solutions Inc.
- Transfer device and image forming apparatus7 Jan 2025US 12,189,318 B2Ricoh Company, Ltd.
- Image forming apparatus capable of executing speed reduction control of system linear speed at time of warming-up7 Jan 2025US 12,189,333 B2KYOCERA Document Solutions Inc.
- Image forming apparatus30 Apr 2026US 2026/0118798 A1Canon Kabushiki Kaisha
- Developing roller, developing cartridge, process cartridge, and electrophotographic image forming apparatus31 Jul 2025US 2025/0244694 A1Canon Kabushiki Kaisha
- Image forming apparatus3 Apr 2025US 2025/0110420 A1Canon Kabushiki Kaisha
- Image forming apparatus2 Jan 2025US 2025/0004394 A1Canon Kabushiki Kaisha
- Image forming apparatus2 May 2024US 2024/0142891 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Apparatus for forming an electrophotographic latent image74US 4,967,231 AElectric Co., Ltd. · 1990
- Developer unit utilizing a non-magnetic single component developer49US 5,170,213 AJapan Imaging System, Inc. · 1992
- Developing apparatus42US 4,378,158 ACanon Kabushiki Kaisha · 1983
- Loosely mounted outer sleeve member with biasing means36US 4,791,882 AMinolta Camera Kabushiki Kaisha · 1988
- Image forming method utilizing toner having inorganic particles and particles of a specific sphericity35US 5,915,150 ACanon Kabushiki Kaisha · 1999