Source: http://www.google.com/patents/US7130076?dq=patent:6161142
Timestamp: 2014-03-15 03:47:13
Document Index: 78706761

Matched Legal Cases: ['art 18', 'arts 6', 'arts 6', 'art 18', 'arts 6', 'arts 6', 'art 7', 'art 8', 'art 9', 'art 18']

Patent US7130076 - Image output device and test chart for the same - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsIn an image output device a test chart 18 including tests charts 6 of each color is used, and a tone correction table is calculated. The test charts 6 are patterned in a checkered pattern, each including continuous areas 10 in which the tones increase in steps and reference areas 11 for comparison with...http://www.google.com/patents/US7130076?utm_source=gb-gplus-sharePatent US7130076 - Image output device and test chart for the sameAdvanced Patent SearchPublication numberUS7130076 B2Publication typeGrantApplication numberUS 09/911,715Publication dateOct 31, 2006Filing dateJul 25, 2001Priority dateJul 27, 2000Fee statusPaidAlso published asUS20020030832Publication number09911715, 911715, US 7130076 B2, US 7130076B2, US-B2-7130076, US7130076 B2, US7130076B2InventorsTakeshi Shibuya, Yukio Yamamoto, Naoyuki Urata, Toshiyuki Yamada, Natsuhiko HirayamaOriginal AssigneeRicoh Printing Systems, Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (5), Referenced by (11), Classifications (15), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetImage output device and test chart for the sameUS 7130076 B2Abstract In an image output device a test chart 18 including tests charts 6 of each color is used, and a tone correction table is calculated. The test charts 6 are patterned in a checkered pattern, each including continuous areas 10 in which the tones increase in steps and reference areas 11 for comparison with the continuous areas 10. The reference areas 11 are formed of white ground of paper in a highlight proof part 7, a solid pattern with a maximum density in a shadow proof part 8, and halftone dot-concentrated or line screens with a lower resolution than in the continuous areas in a middle proof part 9. Tone correction values are calculated from characteristic values of the highlight, shadow and middle parts, obtained from visual data of the test chart 18. Images(12) Claims(40)
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5347369 *Mar 22, 1993Sep 13, 1994Xerox CorporationPrinter calibration using a tone reproduction curve and requiring no measuring equipmentUS5917511 *May 16, 1996Jun 29, 1999Brother Kogyo Kabushiki KaishaPrinter with image output characteristics correcting functionJP2000004359A Title not availableJPH07128974A Title not availableJPS646562A Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7443537 *Sep 29, 2004Oct 28, 2008Digimarc CorporationMethods and apparatuses for printer recalibrationUS7626728 *Dec 21, 2006Dec 1, 2009Canon Kabushiki KaishaMethod and apparatus for calcuating color differences on measured evaluation charts to evaluate color reproducibility considering image homogeneityUS7633648 *Dec 21, 2006Dec 15, 2009Canon Kabushiki KaishaMethod and apparatus for calculating distances and reflection differences between measurement points on printed matter to evaluate image qualityUS7965417 *Dec 14, 2007Jun 21, 2011Canon Kabushiki KaishaTone correction table generation method and apparatusUS8009324Apr 18, 2008Aug 30, 2011Digimarc CorporationMethods and apparatuses for printer calibrationUS8102564 *Dec 22, 2005Jan 24, 2012Xerox CorporationMethod and system for color correction using both spatial correction and printer calibration techniquesUS8130414 *Jul 9, 2008Mar 6, 2012Canon Kabushiki KaishaImage forming apparatus using a density patternUS8149458Oct 28, 2008Apr 3, 2012Digimarc CorporationMethods and apparatuses for printer calibrationUS8175483 *Sep 2, 2009May 8, 2012Fuji Xerox Co., Ltd.Image forming apparatus and gradation correction test chartUS8488196Dec 15, 2011Jul 16, 2013Xerox CorporationMethod and system for color correction using both spatial correction and printer calibration techniquesUS20100215392 *Sep 2, 2009Aug 26, 2010Fuji Xerox Co., Ltd.Image forming apparatus and gradation correction test chart* Cited by examinerClassifications U.S. Classification358/1.9, 358/406, 358/504International ClassificationH04N1/407, G03G21/00, G03G15/00, B41J1/00, H04N1/60, G06T5/00, H04N1/00, H04N1/46, B41J2/44, B41J2/52Cooperative ClassificationH04N1/6033European ClassificationH04N1/60F2Legal EventsDateCodeEventDescriptionMar 3, 2010FPAYFee paymentYear of fee payment: 4Nov 9, 2005ASAssignmentOwner name: RICOH PRINTING SYSTEMS, LTD., JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HITACHI, LTD.;REEL/FRAME:017192/0911Effective date: 20050726Jul 25, 2001ASAssignmentOwner name: HITACHI, LTD., JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIBUYA, TAKESHI;YAMAMOTO, YUKIO;URATA, NAOYUKI;AND OTHERS;REEL/FRAME:012020/0275;SIGNING DATES FROM 20010702 TO 20010706RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google