DE69722370D1 - Kompensation mit geschlossener Schleife für Grautondruckvorrichtungen - Google Patents
Kompensation mit geschlossener Schleife für GrautondruckvorrichtungenInfo
- Publication number
- DE69722370D1 DE69722370D1 DE69722370T DE69722370T DE69722370D1 DE 69722370 D1 DE69722370 D1 DE 69722370D1 DE 69722370 T DE69722370 T DE 69722370T DE 69722370 T DE69722370 T DE 69722370T DE 69722370 D1 DE69722370 D1 DE 69722370D1
- Authority
- DE
- Germany
- Prior art keywords
- closed loop
- printing devices
- loop compensation
- grayscale printing
- grayscale
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
- H04N1/4005—Circuits exciting or modulating particular heads for reproducing continuous tone value scales with regulating circuits, e.g. dependent upon ambient temperature or feedback control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
- H04N1/40037—Circuits exciting or modulating particular heads for reproducing continuous tone value scales the reproducing element being a laser
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laser Beam Printer (AREA)
- Dot-Matrix Printers And Others (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US791879 | 1997-01-31 | ||
US08/791,879 US6014161A (en) | 1997-01-31 | 1997-01-31 | Closed loop compensation for gray scale printing devices |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69722370D1 true DE69722370D1 (de) | 2003-07-03 |
DE69722370T2 DE69722370T2 (de) | 2004-03-25 |
Family
ID=25155068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69722370T Expired - Lifetime DE69722370T2 (de) | 1997-01-31 | 1997-07-31 | Kompensation mit geschlossener Schleife für Grautondruckvorrichtungen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6014161A (de) |
EP (1) | EP0858205B1 (de) |
JP (1) | JPH10217535A (de) |
DE (1) | DE69722370T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6950094B2 (en) * | 1998-03-30 | 2005-09-27 | Agilent Technologies, Inc | Seeing eye mouse for a computer system |
US5786804A (en) | 1995-10-06 | 1998-07-28 | Hewlett-Packard Company | Method and system for tracking attitude |
JP4308338B2 (ja) * | 1998-01-16 | 2009-08-05 | 株式会社東芝 | ビーム光走査装置および画像形成装置 |
US6987575B1 (en) | 1998-12-21 | 2006-01-17 | Oce Printing Systems, Gmbh | Printing device which operates with at least three brightness steps and methods to be executed therewith for determining printing parameters |
US6175375B1 (en) * | 2000-01-25 | 2001-01-16 | Lexmark International, Inc. | Method and apparatus for compensating for a darkness shift during the life of an electrophotographic printer cartridge |
US6975427B1 (en) | 2000-03-27 | 2005-12-13 | International Business Machines Corporation | Method, system, and program for using look-up tables to filter raster data |
US7064859B1 (en) | 2000-03-27 | 2006-06-20 | International Business Machines Corporation | Method, system, program, and data structure for producing a look-up table to enhance print quality |
US6975428B1 (en) | 2000-03-27 | 2005-12-13 | International Business Machines Corporation | Method, system, and program for reducing toner usage in print output |
JP2001318329A (ja) * | 2000-05-11 | 2001-11-16 | Noritsu Koki Co Ltd | 光走査装置およびこれを備えた写真処理装置 |
US6982814B1 (en) | 2000-08-23 | 2006-01-03 | Hewlett-Packard Development Company, L.P. | Image printing devices with AM/FM half-toning with self-determination of dot size and method of implementing same |
US6606330B2 (en) | 2001-05-07 | 2003-08-12 | Lexmark International, Inc. | Laser drive compensation by duty cycle and power |
JP4322442B2 (ja) * | 2001-05-18 | 2009-09-02 | 株式会社リコー | 画像形成装置 |
US6856340B2 (en) * | 2003-01-28 | 2005-02-15 | Hewlett-Packard Development Company, L.P. | System and method for clock independent pulse width modulation |
US7206012B2 (en) * | 2004-03-24 | 2007-04-17 | Lexmark International, Inc. | Memory device on optical scanner and apparatus and method for storing characterizing information on the memory device |
JP4508890B2 (ja) * | 2005-01-25 | 2010-07-21 | キヤノン株式会社 | 画像形成装置、画像形成方法、及びプログラム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2827074A1 (de) * | 1977-06-21 | 1979-01-04 | Canon Kk | Aufzeichnungsgeraet |
US4429218A (en) * | 1981-05-11 | 1984-01-31 | Xerox Corporation | Scanning beam detector |
US4578689A (en) * | 1984-11-26 | 1986-03-25 | Data Recording Systems, Inc. | Dual mode laser printer |
JP2524108B2 (ja) * | 1986-02-24 | 1996-08-14 | 富士写真フイルム株式会社 | 光走査記録装置 |
US4794413A (en) * | 1986-08-20 | 1988-12-27 | Canon Kabushiki Kaisha | Image recording apparatus |
JPH0626421B2 (ja) * | 1987-02-25 | 1994-04-06 | 富士写真フイルム株式会社 | 半導体レ−ザのドル−プ補正装置 |
US4899344A (en) * | 1987-12-07 | 1990-02-06 | Ricoh Co., Ltd. | Semiconductor laser control apparatus |
US4914459A (en) * | 1988-04-18 | 1990-04-03 | Ricoh Company, Ltd. | Image forming apparatus |
US5017944A (en) * | 1989-03-06 | 1991-05-21 | Victor Company Of Japan, Ltd. | Control system for information recording laser beam |
JPH03126053A (ja) * | 1989-10-12 | 1991-05-29 | Ricoh Co Ltd | 画像形成装置 |
US5200765A (en) * | 1990-03-26 | 1993-04-06 | Eastman Kodak Company | Apparatus and method for calibrating a grey level printhead |
US5602814A (en) * | 1994-10-06 | 1997-02-11 | International Business Machines Corporation | Calibration of write-once disks using a single disk sector |
-
1997
- 1997-01-31 US US08/791,879 patent/US6014161A/en not_active Expired - Fee Related
- 1997-07-31 EP EP97113229A patent/EP0858205B1/de not_active Expired - Lifetime
- 1997-07-31 DE DE69722370T patent/DE69722370T2/de not_active Expired - Lifetime
-
1998
- 1998-01-27 JP JP10013561A patent/JPH10217535A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0858205B1 (de) | 2003-05-28 |
DE69722370T2 (de) | 2004-03-25 |
US6014161A (en) | 2000-01-11 |
EP0858205A1 (de) | 1998-08-12 |
JPH10217535A (ja) | 1998-08-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE |