JP7350560B2 - 画像形成装置 - Google Patents

画像形成装置 Download PDF

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Publication number
JP7350560B2
JP7350560B2 JP2019146646A JP2019146646A JP7350560B2 JP 7350560 B2 JP7350560 B2 JP 7350560B2 JP 2019146646 A JP2019146646 A JP 2019146646A JP 2019146646 A JP2019146646 A JP 2019146646A JP 7350560 B2 JP7350560 B2 JP 7350560B2
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JP
Japan
Prior art keywords
image
density
gradation
reflection rate
correction
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
JP2019146646A
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English (en)
Japanese (ja)
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JP2021024248A5 (enExample
JP2021024248A (ja
Inventor
暁仁 横手
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 JP2019146646A priority Critical patent/JP7350560B2/ja
Priority to US16/988,194 priority patent/US11592773B2/en
Publication of JP2021024248A publication Critical patent/JP2021024248A/ja
Publication of JP2021024248A5 publication Critical patent/JP2021024248A5/ja
Application granted granted Critical
Publication of JP7350560B2 publication Critical patent/JP7350560B2/ja
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    • 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
    • G03G15/5062—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 characteristics of an image on the copy material
    • 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
    • G03G15/55—Self-diagnostics; Malfunction or lifetime display
    • 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • H04N1/6033—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer using test pattern analysis
    • H04N1/6041—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer using test pattern analysis for controlling uniformity of color across image area
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • 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
    • G03G15/5075—Remote control machines, e.g. by a host
    • G03G15/5087—Remote control machines, e.g. by a host for receiving image data
    • 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
    • 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
    • G03G2215/00067—Image density detection on recording medium
    • 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
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00556—Control of copy medium feeding
    • G03G2215/00569—Calibration, test runs, test prints
    • 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
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/00755—Detection of physical properties of sheet toner density
    • 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
    • H04N1/401—Compensating positionally unequal response of the pick-up or reproducing head
    • H04N1/4015—Compensating positionally unequal response of the pick-up or reproducing head of the reproducing head

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
JP2019146646A 2019-08-08 2019-08-08 画像形成装置 Active JP7350560B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019146646A JP7350560B2 (ja) 2019-08-08 2019-08-08 画像形成装置
US16/988,194 US11592773B2 (en) 2019-08-08 2020-08-07 Image forming apparatus that corrects density uneveness in a main scanning direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019146646A JP7350560B2 (ja) 2019-08-08 2019-08-08 画像形成装置

Publications (3)

Publication Number Publication Date
JP2021024248A JP2021024248A (ja) 2021-02-22
JP2021024248A5 JP2021024248A5 (enExample) 2022-08-09
JP7350560B2 true JP7350560B2 (ja) 2023-09-26

Family

ID=74498842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019146646A Active JP7350560B2 (ja) 2019-08-08 2019-08-08 画像形成装置

Country Status (2)

Country Link
US (1) US11592773B2 (enExample)
JP (1) JP7350560B2 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7500239B2 (ja) 2020-03-24 2024-06-17 キヤノン株式会社 画像形成装置
JP7657673B2 (ja) 2021-07-13 2025-04-07 キヤノン株式会社 画像形成装置
CN113630516B (zh) * 2021-08-02 2025-03-11 珠海奔图电子有限公司 画像校正方法、图像形成装置及存储介质
JP7766437B2 (ja) 2021-09-21 2025-11-10 キヤノン株式会社 画像形成装置
JP7716296B2 (ja) 2021-09-28 2025-07-31 キヤノン株式会社 画像形成装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007057954A (ja) 2005-08-25 2007-03-08 Fuji Xerox Co Ltd 画像形成装置
JP2008026623A (ja) 2006-07-21 2008-02-07 Fuji Xerox Co Ltd 画像形成装置、画像処理装置及びそのプログラム
JP2013254150A (ja) 2012-06-08 2013-12-19 Ricoh Co Ltd 画像形成装置、画像形成方法、プログラムおよび記録媒体
JP2016037042A (ja) 2014-08-05 2016-03-22 株式会社リコー 画像形成装置、画像形成方法、及び、プログラム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6853817B2 (en) * 2001-08-31 2005-02-08 Canon Kabushiki Kaisha Method for correcting and controlling image forming conditions
JP2007264364A (ja) 2006-03-29 2007-10-11 Seiko Epson Corp 画像形成装置及び画像形成濃度の調整方法
JP2009192896A (ja) 2008-02-15 2009-08-27 Konica Minolta Business Technologies Inc 画像形成装置及び画像補正方法
JP2011191416A (ja) * 2010-03-12 2011-09-29 Konica Minolta Business Technologies Inc 画像形成装置、画像形成システム及び画像濃度調整方法
JP5327302B2 (ja) * 2011-10-12 2013-10-30 富士ゼロックス株式会社 反射型センサ及び画像形成装置
JP2017187627A (ja) * 2016-04-06 2017-10-12 キヤノン株式会社 画像形成装置
JP7006192B2 (ja) * 2017-11-29 2022-02-10 株式会社リコー 画像形成装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007057954A (ja) 2005-08-25 2007-03-08 Fuji Xerox Co Ltd 画像形成装置
JP2008026623A (ja) 2006-07-21 2008-02-07 Fuji Xerox Co Ltd 画像形成装置、画像処理装置及びそのプログラム
JP2013254150A (ja) 2012-06-08 2013-12-19 Ricoh Co Ltd 画像形成装置、画像形成方法、プログラムおよび記録媒体
JP2016037042A (ja) 2014-08-05 2016-03-22 株式会社リコー 画像形成装置、画像形成方法、及び、プログラム

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US11592773B2 (en) 2023-02-28
US20210041822A1 (en) 2021-02-11
JP2021024248A (ja) 2021-02-22

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