H04N 1/40025
Circuits exciting or modulating particular heads for reproducing continuous tone value scales
Official title: {Circuits exciting or modulating particular heads for reproducing continuous tone value scales (H04N1/401, H04N1/407 take precedence)}
H04N1/40025 (Circuits exciting or modulating particular heads for reproducing continuous tone value scales) appears on 957 US grants and 319 published applications in this corpus.
Search patents in H04N- Granted patents
- 957
- Published applications
- 319
- Assignees
- 214
- Inventors
- 1,662
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 13 | 0 |
| 1983 | 17 | 0 |
| 1984 | 18 | 0 |
| 1985 | 20 | 0 |
| 1986 | 17 | 0 |
| 1987 | 30 | 0 |
| 1988 | 24 | 0 |
| 1989 | 36 | 0 |
| 1990 | 28 | 0 |
| 1991 | 28 | 0 |
| 1992 | 25 | 0 |
| 1993 | 31 | 0 |
| 1994 | 28 | 0 |
| 1995 | 38 | 0 |
| 1996 | 36 | 0 |
| 1997 | 39 | 0 |
| 1998 | 63 | 0 |
| 1999 | 35 | 0 |
| 2000 | 50 | 0 |
| 2001 | 34 | 14 |
| 2002 | 24 | 28 |
| 2003 | 38 | 25 |
| 2004 | 21 | 22 |
| 2005 | 10 | 28 |
| 2006 | 11 | 27 |
| 2007 | 27 | 25 |
| 2008 | 20 | 23 |
| 2009 | 18 | 16 |
| 2010 | 18 | 7 |
| 2011 | 15 | 17 |
| 2012 | 15 | 6 |
| 2013 | 13 | 13 |
| 2014 | 14 | 7 |
| 2015 | 15 | 3 |
| 2016 | 4 | 10 |
| 2017 | 11 | 13 |
| 2018 | 15 | 14 |
| 2019 | 13 | 7 |
| 2020 | 3 | 3 |
| 2021 | 5 | 2 |
| 2022 | 3 | 2 |
| 2023 | 3 | 4 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Driving device and printing apparatus having a connection circuit switching connection combinations of load blocks and driving circuits6 May 2025US 12,292,699 B2Canon Kabushiki Kaisha
- Image forming apparatus, control method thereof, and storage medium for correcting variations in light amount from light source1 Apr 2025US 12,265,339 B2Canon Kabushiki Kaisha
- Method and system for processing a raster image file30 Jan 2024US 11,884,057 B2Xsys Prepress NV
- Image reading apparatus and image forming apparatus5 Dec 2023US 11,838,481 B2Ricoh Company, Ltd.
- Semiconductor array imager for printing systems28 Nov 2023US 11,827,037 B2Xerox Corporation
- Optical scanning device and image forming apparatus26 Mar 2026US 2026/0086471 A1FUJIFILM Business Innovation Corp.
- Driving device and printing apparatus17 Jul 2025US 2025/0231503 A1Canon Kabushiki Kaisha
- Driving device and printing apparatus1 Feb 2024US 2024/0036492 A1Canon Kabushiki Kaisha
- Method and system for processing a raster image file19 Oct 2023US 2023/0330984 A1Xeikon Prepress N.V.
- Image forming apparatus, control method thereof, and storage medium7 Sep 2023US 2023/0280672 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Droplet generating method and apparatus thereof1,847US 4,463,359 ACanon Kabushiki Kaisha · 1984
- Ink jet recording method1,590US 4,345,262 ACanon Kabushiki Kaisha · 1982
- Optical scanning device and image forming apparatus1,019US 7,598,972 B2Ricoh Company, Ltd. · 2009
- Process and architecture for digital micromirror printer333US 5,461,411 AAgfa-Gevaert · 1995
- Liquid jet recording method with variable thermal viscosity modulation179US 4,251,824 ACanon Kabushiki Kaisha · 1981