JP4612762B2 - 画像形成装置 - Google Patents

画像形成装置 Download PDF

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Publication number
JP4612762B2
JP4612762B2 JP2000141350A JP2000141350A JP4612762B2 JP 4612762 B2 JP4612762 B2 JP 4612762B2 JP 2000141350 A JP2000141350 A JP 2000141350A JP 2000141350 A JP2000141350 A JP 2000141350A JP 4612762 B2 JP4612762 B2 JP 4612762B2
Authority
JP
Japan
Prior art keywords
detection
density
pattern
image forming
forming apparatus
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 - Fee Related
Application number
JP2000141350A
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English (en)
Japanese (ja)
Other versions
JP2001324840A (ja
JP2001324840A5 (enExample
Inventor
和弘 船谷
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2000141350A priority Critical patent/JP4612762B2/ja
Priority to US09/852,748 priority patent/US6512898B2/en
Publication of JP2001324840A publication Critical patent/JP2001324840A/ja
Publication of JP2001324840A5 publication Critical patent/JP2001324840A5/ja
Application granted granted Critical
Publication of JP4612762B2 publication Critical patent/JP4612762B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
    • 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
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
    • H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00033—Image density detection on recording member
    • G03G2215/00037—Toner image detection
    • G03G2215/00042—Optical detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
JP2000141350A 2000-05-15 2000-05-15 画像形成装置 Expired - Fee Related JP4612762B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000141350A JP4612762B2 (ja) 2000-05-15 2000-05-15 画像形成装置
US09/852,748 US6512898B2 (en) 2000-05-15 2001-05-11 Image forming apparatus for detecting the density of toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000141350A JP4612762B2 (ja) 2000-05-15 2000-05-15 画像形成装置

Publications (3)

Publication Number Publication Date
JP2001324840A JP2001324840A (ja) 2001-11-22
JP2001324840A5 JP2001324840A5 (enExample) 2009-11-26
JP4612762B2 true JP4612762B2 (ja) 2011-01-12

Family

ID=18648479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000141350A Expired - Fee Related JP4612762B2 (ja) 2000-05-15 2000-05-15 画像形成装置

Country Status (2)

Country Link
US (1) US6512898B2 (enExample)
JP (1) JP4612762B2 (enExample)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4745512B2 (ja) * 2001-02-09 2011-08-10 キヤノン株式会社 カラー画像形成装置
US6775489B2 (en) * 2001-06-07 2004-08-10 Canon Kabushiki Kaisha Image forming apparatus capable of detecting density of toner image
JP2003162111A (ja) * 2001-11-27 2003-06-06 Canon Inc カラー画像形成装置
JP4136706B2 (ja) * 2003-02-20 2008-08-20 キヤノン株式会社 カラー画像形成装置及びその濃度検知パターン生成方法
EP1457840B1 (en) 2003-03-14 2014-07-30 Ricoh Company, Ltd. Colour image forming apparatus, which controls the image density by evaluating a reflection signal and a diffuse reflection signal of an optical detecting unit
US20060093382A1 (en) * 2004-11-03 2006-05-04 Ertel John P System and method for accurately tracking printable material
JP4594115B2 (ja) * 2005-01-20 2010-12-08 京セラミタ株式会社 画像形成装置
CN1892487B (zh) 2005-06-30 2010-12-29 株式会社理光 用于图像形成装置的附着量变换方法
KR100795160B1 (ko) * 2007-03-22 2008-01-16 주식회사 아트닉스 얼굴영역검출장치 및 검출방법
JP5268020B2 (ja) 2008-10-22 2013-08-21 株式会社リコー 画像形成装置
JP2013003211A (ja) 2011-06-13 2013-01-07 Ricoh Co Ltd 拡散反射光出力変換方法、粉体付着量変換方法及び画像形成装置
JP2013113989A (ja) * 2011-11-28 2013-06-10 Brother Ind Ltd 画像形成装置、および画像形成補正方法
US9042755B2 (en) * 2013-10-04 2015-05-26 Xerox Corporation Printer control using optical and electrostatic sensors
WO2015183955A2 (en) * 2014-05-27 2015-12-03 Questek Innovations Llc Highly processable single crystal nickel alloys
JP7600578B2 (ja) 2020-09-10 2024-12-17 京セラドキュメントソリューションズ株式会社 画像形成装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2918045B2 (ja) * 1988-10-28 1999-07-12 株式会社リコー 画像濃度制御装置
JP3089636B2 (ja) * 1989-09-05 2000-09-18 ミノルタ株式会社 画像形成装置
JPH0511552A (ja) * 1991-07-05 1993-01-22 Minolta Camera Co Ltd デジタル画像形成装置
JPH05249787A (ja) 1992-03-03 1993-09-28 Canon Inc 画像形成装置
JP2729976B2 (ja) 1993-02-25 1998-03-18 スタンレー電気株式会社 転写形カラープリンタのトナー付着量測定装置
US5625857A (en) * 1994-01-18 1997-04-29 Hitachi, Ltd. Image forming apparatus which measures deposit amounts of toner
US5630195A (en) * 1995-05-12 1997-05-13 Ricoh Company, Ltd. Color toner density sensor and image forming apparatus using the same
JP3441595B2 (ja) * 1996-02-29 2003-09-02 株式会社リコー 電子写真トナー付着量測定装置
US5933680A (en) * 1996-02-29 1999-08-03 Canon Kabushiki Kaisha Image processing apparatus and method for optimizing an image formation condition
JP3667971B2 (ja) * 1998-02-04 2005-07-06 株式会社リコー 画像形成装置
JP3532472B2 (ja) * 1999-04-27 2004-05-31 シャープ株式会社 画像形成装置

Also Published As

Publication number Publication date
JP2001324840A (ja) 2001-11-22
US20020006288A1 (en) 2002-01-17
US6512898B2 (en) 2003-01-28

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