DE602007006087D1 - Schwarzpegel-Feedbackvorrichtung, Bildlesevorrichteedbacks - Google Patents

Schwarzpegel-Feedbackvorrichtung, Bildlesevorrichteedbacks

Info

Publication number
DE602007006087D1
DE602007006087D1 DE602007006087T DE602007006087T DE602007006087D1 DE 602007006087 D1 DE602007006087 D1 DE 602007006087D1 DE 602007006087 T DE602007006087 T DE 602007006087T DE 602007006087 T DE602007006087 T DE 602007006087T DE 602007006087 D1 DE602007006087 D1 DE 602007006087D1
Authority
DE
Germany
Prior art keywords
feedbacks
feedback device
black level
image reader
level feedback
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.)
Active
Application number
DE602007006087T
Other languages
English (en)
Inventor
Hajime Tsukahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE602007006087D1 publication Critical patent/DE602007006087D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/044—Moving a scanning element into cooperation with a calibration element, e.g. a grey-wedge mounted on the document support, or vice versa
DE602007006087T 2006-03-17 2007-03-19 Schwarzpegel-Feedbackvorrichtung, Bildlesevorrichteedbacks Active DE602007006087D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006075555A JP4568690B2 (ja) 2006-03-17 2006-03-17 黒レベルフィードバック装置、画像読取装置および黒レベルフィードバック制御方法

Publications (1)

Publication Number Publication Date
DE602007006087D1 true DE602007006087D1 (de) 2010-06-10

Family

ID=38198350

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602007006087T Active DE602007006087D1 (de) 2006-03-17 2007-03-19 Schwarzpegel-Feedbackvorrichtung, Bildlesevorrichteedbacks

Country Status (4)

Country Link
US (1) US7719724B2 (de)
EP (1) EP1835724B1 (de)
JP (1) JP4568690B2 (de)
DE (1) DE602007006087D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008118366A (ja) 2006-11-02 2008-05-22 Ricoh Co Ltd 画像読み取り装置及び画像形成装置
US7889404B2 (en) * 2007-05-31 2011-02-15 Ricoh Company, Ltd. Image reading device, image forming apparatus, and reading-unit install method
JP5444795B2 (ja) * 2008-07-29 2014-03-19 株式会社リコー 画像読み取り装置、画像形成装置、振幅調整方法、及びコンピュータプログラム
JP2010136164A (ja) * 2008-12-05 2010-06-17 Ricoh Co Ltd 画像読取装置
JP5326911B2 (ja) * 2009-07-30 2013-10-30 株式会社リコー スペクトラム拡散クロックジェネレータ、回路装置、画像読取装置、画像形成装置、及びスペクトラム拡散クロック生成方法
JP5495701B2 (ja) * 2009-10-07 2014-05-21 キヤノン株式会社 固体撮像装置
JP2011103575A (ja) * 2009-11-11 2011-05-26 Ricoh Co Ltd 画像読取装置および画像形成装置
JP7196644B2 (ja) 2019-01-30 2022-12-27 株式会社リコー 傾き検出装置、読取装置、画像処理装置および傾き検出方法
JP7131415B2 (ja) 2019-01-31 2022-09-06 株式会社リコー 傾き検出装置、読取装置、画像処理装置および傾き検出方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597087A (en) * 1984-10-19 1986-06-24 Itt Corporation Frequency hopping data communication system
JPH0286266A (ja) * 1988-09-21 1990-03-27 Fuji Xerox Co Ltd 画像読取装置
US5402252A (en) * 1991-06-14 1995-03-28 Matsushita Electric Industrial Co., Ltd. Image reader and image reproducing system both having a line sensor
JPH0614188A (ja) 1992-06-26 1994-01-21 Ricoh Co Ltd 画像処理装置
US5631920A (en) 1993-11-29 1997-05-20 Lexmark International, Inc. Spread spectrum clock generator
US5689623A (en) * 1995-03-27 1997-11-18 Optronics International Corporation Spread spectrum digital screening
JP3075203B2 (ja) * 1997-01-28 2000-08-14 日本電気株式会社 固体撮像素子
US6160578A (en) * 1998-06-18 2000-12-12 Redlake Imaging Corporation High speed, increased bandwidth camera
US6246729B1 (en) * 1998-09-08 2001-06-12 Northrop Grumman Corporation Method and apparatus for decoding a phase encoded data signal
JP3828296B2 (ja) 1998-09-29 2006-10-04 株式会社リコー 画像読取装置
US6437833B1 (en) * 1998-11-18 2002-08-20 Kabushiki Kaisha Toshiba Automatic white balance adjusting circuit in color image display
JP3808278B2 (ja) 1999-11-15 2006-08-09 株式会社リコー 画像読取装置および複写機
JP3780794B2 (ja) * 2000-01-17 2006-05-31 コニカミノルタホールディングス株式会社 画像形成装置及び画像読取装置
JP2002057899A (ja) * 2000-08-11 2002-02-22 Ricoh Co Ltd 画像読取装置及び画像形成装置
JP3879470B2 (ja) * 2001-10-09 2007-02-14 富士ゼロックス株式会社 撮像信号の基準レベル調整装置およびプログラム
US6762784B2 (en) * 2002-01-16 2004-07-13 Xerox Corporation Method of reducing electromagnetic emissions (EMI) from LED bar systems
JP2003332908A (ja) 2002-05-15 2003-11-21 Ricoh Co Ltd Ｐｌｌ回路、これを用いた画像読取装置及び電子機器
JP2004015094A (ja) * 2002-06-03 2004-01-15 Ricoh Co Ltd 画像データ処理装置及び画像読取装置
JP4059500B2 (ja) 2003-11-18 2008-03-12 株式会社リコー 画像読取装置
JP4104624B2 (ja) * 2005-11-25 2008-06-18 シャープ株式会社 画像処理装置、画像読取装置及び画像形成装置

Also Published As

Publication number Publication date
EP1835724B1 (de) 2010-04-28
JP4568690B2 (ja) 2010-10-27
JP2007251836A (ja) 2007-09-27
US20070216915A1 (en) 2007-09-20
EP1835724A2 (de) 2007-09-19
US7719724B2 (en) 2010-05-18
EP1835724A3 (de) 2009-03-25

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Legal Events

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