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GB2086077B - An automatic image quality adjusting device in a copying machine - Google Patents

An automatic image quality adjusting device in a copying machine

Info

Publication number
GB2086077B
GB2086077B GB8126227A GB8126227A GB2086077B GB 2086077 B GB2086077 B GB 2086077B GB 8126227 A GB8126227 A GB 8126227A GB 8126227 A GB8126227 A GB 8126227A GB 2086077 B GB2086077 B GB 2086077B
Authority
GB
United Kingdom
Prior art keywords
image quality
adjusting device
copying machine
automatic image
quality adjusting
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
Application number
GB8126227A
Other versions
GB2086077A (en
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of GB2086077A publication Critical patent/GB2086077A/en
Application granted granted Critical
Publication of GB2086077B publication Critical patent/GB2086077B/en
Expired legal-status Critical Current

Links

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
    • G03G15/5025—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 original characteristics, e.g. contrast, density
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G01N21/5911—Densitometers of the scanning type
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/065—Arrangements for controlling the potential of the developing electrode

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Image Signal Circuits (AREA)
GB8126227A 1980-09-02 1981-08-27 An automatic image quality adjusting device in a copying machine Expired GB2086077B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120623A JPS5745564A (en) 1980-09-02 1980-09-02 Automatic image quality adjuster in copying machine

Publications (2)

Publication Number Publication Date
GB2086077A GB2086077A (en) 1982-05-06
GB2086077B true GB2086077B (en) 1985-07-03

Family

ID=14790805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8126227A Expired GB2086077B (en) 1980-09-02 1981-08-27 An automatic image quality adjusting device in a copying machine

Country Status (3)

Country Link
JP (1) JPS5745564A (en)
DE (1) DE3134782A1 (en)
GB (1) GB2086077B (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189667A (en) * 1982-04-28 1983-11-05 Canon Inc Image forming device
JPS58200229A (en) * 1982-05-18 1983-11-21 Copyer Co Ltd Controller for diazo copying machine
JPS58208739A (en) * 1982-05-31 1983-12-05 Canon Inc image forming device
JPS5910966A (en) * 1982-07-12 1984-01-20 Fujitsu Ltd Developing device
JPS5913232A (en) * 1982-07-15 1984-01-24 Canon Inc Copying machine
JPS5995549A (en) * 1982-11-25 1984-06-01 Konishiroku Photo Ind Co Ltd Method and apparatus for controlling image formation of copying machine
JPS59133571A (en) * 1983-01-21 1984-07-31 Canon Inc Copying device
JPS59198471A (en) * 1983-04-26 1984-11-10 Canon Inc copying device
JPS59228262A (en) * 1983-06-08 1984-12-21 Minolta Camera Co Ltd Image density controller of copying machine
JPS6019164A (en) * 1983-07-13 1985-01-31 Canon Inc Image processing device
JPS6035752A (en) * 1983-08-06 1985-02-23 Canon Inc Image control device
JPS6053965A (en) * 1983-09-05 1985-03-28 Canon Inc Image recording control device
JPS60112073A (en) * 1983-11-22 1985-06-18 Matsushita Electric Ind Co Ltd Electrophotocopy machine
DE3577362D1 (en) * 1984-02-20 1990-05-31 Konishiroku Photo Ind METHOD FOR DETERMINING THE IMAGE DENSITY OF A DOCUMENT AND COPYING IT.
JPS60173561A (en) * 1984-02-20 1985-09-06 Konishiroku Photo Ind Co Ltd Copying device
JPS60173564A (en) * 1984-02-20 1985-09-06 Konishiroku Photo Ind Co Ltd Copying device
JPS60173563A (en) * 1984-02-20 1985-09-06 Konishiroku Photo Ind Co Ltd Copying device
JPS60173562A (en) * 1984-02-20 1985-09-06 Konishiroku Photo Ind Co Ltd Copying device
JPS60257458A (en) * 1984-06-05 1985-12-19 Fuji Xerox Co Ltd Copy density display device
JPS6157960A (en) * 1984-08-29 1986-03-25 Minolta Camera Co Ltd Photometric device of copying machine
JPS6161142A (en) * 1984-08-31 1986-03-28 Sharp Corp Exposure adjustment device
JPS6163864A (en) * 1984-09-04 1986-04-02 Konishiroku Photo Ind Co Ltd Automatic picture density adjusting device
JPS6180274A (en) * 1984-09-28 1986-04-23 Mita Ind Co Ltd Method for displaying automatic exposing state of automatic exposing copying machine
JPS61103169A (en) * 1984-10-26 1986-05-21 Canon Inc image forming device
JPS61126575A (en) * 1984-11-26 1986-06-14 Mita Ind Co Ltd Temperature correcting method of automatic exposure copying machine
US4731662A (en) * 1985-03-21 1988-03-15 Canon Kabushiki Kaisha Image processing method for processing an image signal differently depending on the range of an image characteristic thereof relative to the range within which an output device can reproduce the image characteristic
JPS6223070A (en) * 1985-07-24 1987-01-31 Mita Ind Co Ltd Semiconductor laser control device
JPS62139543A (en) * 1985-12-13 1987-06-23 Minolta Camera Co Ltd Copying machine
JPS6329772A (en) * 1986-07-23 1988-02-08 Canon Inc Picture forming device
JP2647398B2 (en) * 1987-12-09 1997-08-27 キヤノン株式会社 Image signal processing device
DE68910357T2 (en) * 1988-03-29 1994-05-19 Sharp Kk Image processing device.
US5136341A (en) * 1988-05-31 1992-08-04 Mita Industrial Co. Ltd. Image forming apparatus having means for coordinating the input and discharge of copy paper
JP2575843B2 (en) * 1988-10-13 1997-01-29 富士写真フイルム株式会社 Image input / output system and method for automatically setting signal processing conditions
US5198859A (en) * 1990-06-13 1993-03-30 Konica Corporation Document information detecting device for a copying machine
JP3164744B2 (en) * 1994-12-21 2001-05-08 株式会社東芝 Image forming device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406191C2 (en) * 1974-02-08 1985-02-28 Gretag AG, Regensdorf, Zürich Method of controlling exposure in the production of photographic copies
JPS5913011B2 (en) * 1974-06-21 1984-03-27 富士写真フイルム株式会社 Photographic printing exposure control method
JPS5382354A (en) * 1976-12-28 1978-07-20 Ricoh Co Ltd Optica device fdr electrophotographic copier
US4153364A (en) * 1977-01-28 1979-05-08 Ricoh Company, Ltd. Exposure and development control apparatus for electrostatic copying machine
JPS5492742A (en) * 1977-12-29 1979-07-23 Ricoh Co Ltd Control method for copier image quality

Also Published As

Publication number Publication date
DE3134782C2 (en) 1992-09-03
DE3134782A1 (en) 1982-06-16
JPS5745564A (en) 1982-03-15
JPH0330143B2 (en) 1991-04-26
GB2086077A (en) 1982-05-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930827