CA1036654A - Image density control apparatus - Google Patents

Image density control apparatus

Info

Publication number
CA1036654A
CA1036654A CA193,290A CA193290A CA1036654A CA 1036654 A CA1036654 A CA 1036654A CA 193290 A CA193290 A CA 193290A CA 1036654 A CA1036654 A CA 1036654A
Authority
CA
Canada
Prior art keywords
sample
latent image
electrostatic latent
potential
neutral density
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
CA193,290A
Other languages
English (en)
French (fr)
Inventor
James H. Mcveigh
George N. Tsilibes
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of CA1036654A publication Critical patent/CA1036654A/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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G03G15/0105—Details of unit
    • G03G15/0121—Details of unit for developing
    • 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)
  • Control Or Security For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
CA193,290A 1973-05-17 1974-02-22 Image density control apparatus Expired CA1036654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00361112A US3815988A (en) 1973-05-17 1973-05-17 Image density control apparatus

Publications (1)

Publication Number Publication Date
CA1036654A true CA1036654A (en) 1978-08-15

Family

ID=23420693

Family Applications (1)

Application Number Title Priority Date Filing Date
CA193,290A Expired CA1036654A (en) 1973-05-17 1974-02-22 Image density control apparatus

Country Status (12)

Country Link
US (1) US3815988A (nl)
JP (1) JPS5536144B2 (nl)
AR (1) AR205710A1 (nl)
BE (1) BE815209A (nl)
BR (1) BR7403928D0 (nl)
CA (1) CA1036654A (nl)
DE (1) DE2411855C3 (nl)
FR (1) FR2230003B1 (nl)
GB (1) GB1458707A (nl)
IT (1) IT1012346B (nl)
NL (1) NL166805C (nl)
ZA (1) ZA743132B (nl)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5926957B2 (ja) * 1973-12-28 1984-07-02 キヤノン株式会社 カラ−電子写真方法
US4045218A (en) * 1974-03-29 1977-08-30 Xerox Corporation Method for electrostatically producing a color accented photocopy
US3892481A (en) * 1974-06-17 1975-07-01 Savin Business Machines Corp Automatic development electrode bias control system
USRE31964E (en) * 1974-06-17 1985-08-06 Savin Corporation Automatic development electrode bias control system
US3936182A (en) * 1974-08-12 1976-02-03 Xerox Corporation Control arrangement for an electrostatographic reproduction apparatus
US3960444A (en) * 1974-08-14 1976-06-01 Xerox Corporation Electrophotographic printing machine
JPS5939742B2 (ja) * 1975-10-03 1984-09-26 キヤノン株式会社 複写機の制御装置
JPS5243439A (en) * 1975-10-03 1977-04-05 Ricoh Co Ltd Generator for the bias voltage for the electrophotographic copying machine
US4093457A (en) * 1976-06-10 1978-06-06 Xerox Corporation Method of transfer
DE2759637C2 (de) * 1976-10-19 1986-01-30 Ricoh Co., Ltd., Tokio/Tokyo Einrichtung zur Einstellung der Entwicklungsspannung und/oder der Belichtungsstärke für ein elektrofotografisches Kopiergerät
US4226525A (en) 1976-10-19 1980-10-07 Ricoh Company, Ltd. Electrostatic copying machine
GB1561923A (en) * 1976-12-31 1980-03-05 Xerox Corp Control system for an electrostatogrophic copying machine
JPS5393030A (en) * 1977-01-27 1978-08-15 Ricoh Co Ltd Copying process control method of electrophotographic copying machine
JPS5398834A (en) * 1977-02-09 1978-08-29 Canon Inc Controller for electrostatic device
DE2857218C3 (de) * 1977-02-23 1989-08-10 Ricoh Co., Ltd., Tokio/Tokyo Verfahren zum Konstanthalten optimaler Bedingungen bei der elektrografischen Vervielfältigung
JPS53106129A (en) * 1977-02-28 1978-09-14 Canon Inc Recording electrostatic device
JPS53136838A (en) * 1977-05-04 1978-11-29 Ricoh Co Ltd Automatic controlling method of image quality in transfer type electrostatic copier
JPS543540A (en) * 1977-06-10 1979-01-11 Canon Inc Automatic exposure device
JPS543546A (en) * 1977-06-10 1979-01-11 Canon Inc Exposure device
JPS5486347A (en) * 1977-12-21 1979-07-09 Canon Inc Development stabilizing system
JPS5497044A (en) * 1978-01-17 1979-07-31 Konishiroku Photo Ind Co Ltd Toner concentration controller for zerographic copier
CA1128114A (en) * 1978-04-10 1982-07-20 Clement C. Wilson Test cycle quality control system for an electrophotographic machine
JPS54141645A (en) * 1978-04-26 1979-11-05 Ricoh Co Ltd Copy image adjusting method
US4277162A (en) * 1978-07-13 1981-07-07 Ricoh Company, Ltd. Electrophotographic apparatus comprising density sensor means
US4348099A (en) * 1980-04-07 1982-09-07 Xerox Corporation Closed loop control of reproduction machine
DE3149668A1 (de) * 1980-12-16 1982-07-15 Canon K.K., Tokyo "farbkopiergeraet"
JPS57100448A (en) * 1980-12-16 1982-06-22 Canon Inc Color copying device
JPS57100449A (en) * 1980-12-16 1982-06-22 Canon Inc Color copying device
JPS57102670A (en) * 1980-12-19 1982-06-25 Canon Inc Color copying machine
GB2111674B (en) * 1981-10-30 1985-09-25 Konishiroku Photo Ind Monitoring in electrostatic reproducing apparatus
US4403848A (en) * 1982-02-17 1983-09-13 Xerox Corporation Electronic color printing system
JPS5844451A (ja) * 1982-07-12 1983-03-15 Canon Inc 表面電位安定化方法
JPS5925545U (ja) * 1982-08-11 1984-02-17 株式会社リコー 両面複写機
US4600294A (en) * 1983-04-01 1986-07-15 Canon Kabushiki Kaisha Image forming apparatus with detector and control
DE3526878C2 (de) * 1984-07-27 1997-10-02 Konishiroku Photo Ind Vorrichtung zur Erzeugung eines Mehrfarbbildes
EP0203196B1 (en) * 1984-10-22 1993-01-07 Konica Corporation Method of and apparatus for forming multi-color images
JPS61166558A (ja) * 1985-01-18 1986-07-28 Konishiroku Photo Ind Co Ltd 画像形成装置
US4607944A (en) * 1985-06-07 1986-08-26 Eastman Kodak Company Apparatus for controlling toner replenishment in electrographic copier
DE3530011C3 (de) * 1985-08-22 1994-09-29 Aeg Sensorsysteme Gmbh Verfahren und Vorrichtung zur Unterdrückung des Einflusses von Störlicht bei einer Meßlichtschranke
GB2180947B (en) * 1985-08-31 1989-08-09 Ricoh Kk Image recording device
DE3644355A1 (de) * 1985-12-24 1987-07-30 Toshiba Kawasaki Kk Bilderzeugungsvorrichtung
US4806980A (en) * 1986-11-06 1989-02-21 Eastman Kodak Company Dynamic feedforward process control for electrographic machines
US4780744A (en) * 1987-02-18 1988-10-25 Eastman Kodak Company System for quality monitoring and control in an electrophotographic process
US5124750A (en) * 1989-09-05 1992-06-23 Minolta Camera Kabushiki Kaisha Toner density detecting method, and image forming method and apparatus employing the toner density detecting method
US5153658A (en) * 1991-08-09 1992-10-06 Xerox Corporation Mac cleaner brush film control
JPH0553422A (ja) * 1991-08-29 1993-03-05 Minolta Camera Co Ltd 画像形成装置
US5328787A (en) * 1993-05-24 1994-07-12 Eastman Kodak Company Method for assessing and controlling the sensitometric characteristics of photographic products

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956487A (en) * 1955-03-23 1960-10-18 Rca Corp Electrostatic printing
BE755383A (fr) * 1969-08-29 1971-03-01 Xerox Corp Appareil pour le controle d'electrodes de developpement
US3674532A (en) * 1970-07-23 1972-07-04 Eastman Kodak Co Control for bias of magnetic brush and method

Also Published As

Publication number Publication date
US3815988A (en) 1974-06-11
JPS5020730A (nl) 1975-03-05
BE815209A (fr) 1974-09-16
AR205710A1 (es) 1976-05-31
FR2230003A1 (nl) 1974-12-13
JPS5536144B2 (nl) 1980-09-18
NL166805C (nl) 1981-09-15
DE2411855A1 (de) 1974-12-05
DE2411855B2 (de) 1978-10-12
NL7405155A (nl) 1974-11-19
ZA743132B (en) 1975-05-28
NL166805B (nl) 1981-04-15
DE2411855C3 (de) 1979-06-21
GB1458707A (en) 1976-12-15
IT1012346B (it) 1977-03-10
FR2230003B1 (nl) 1976-12-24
BR7403928D0 (pt) 1975-01-21

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