JPS57104159A - Toner density detecting method - Google Patents

Toner density detecting method

Info

Publication number
JPS57104159A
JPS57104159A JP55180523A JP18052380A JPS57104159A JP S57104159 A JPS57104159 A JP S57104159A JP 55180523 A JP55180523 A JP 55180523A JP 18052380 A JP18052380 A JP 18052380A JP S57104159 A JPS57104159 A JP S57104159A
Authority
JP
Japan
Prior art keywords
original
development
latent image
patch part
electrostatic latent
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.)
Granted
Application number
JP55180523A
Other languages
Japanese (ja)
Other versions
JPS6367184B2 (en
Inventor
Yoshio Yamazaki
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
Priority to JP55180523A priority Critical patent/JPS57104159A/en
Publication of JPS57104159A publication Critical patent/JPS57104159A/en
Publication of JPS6367184B2 publication Critical patent/JPS6367184B2/ja
Granted 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
    • G03G15/06—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)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To achieve precise density detection by making a developing bias voltage different between the development of an electromagnetic latent image of an original to be recorded and that of a reference density piece. CONSTITUTION:On the reverse surface of the front end of a platen 1, a reference density piece for toner density control, i.e., a patch part 2 is provided. After a photosensitive drum 5 rotates and is charged uniformly by a charger 4, the image exposure of the patch part 2 and an original M is performed by an exposure device 3 to form electrostatic latent images of the patch part 2 and original M on the surface of the photosensitive drum 5. When they are developed by a developing device 6, a developing bias voltage having the opposite polarity to the latent image charge of the patch part 2 or less than that for the development of an effective image part is applied for the development of the electrostatic latent image of the patch part 2, and a voltage having the same polarity and much lower than the potential of a ground part is applied for the development of the electrostatic latent image of the original M.
JP55180523A 1980-12-22 1980-12-22 Toner density detecting method Granted JPS57104159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55180523A JPS57104159A (en) 1980-12-22 1980-12-22 Toner density detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55180523A JPS57104159A (en) 1980-12-22 1980-12-22 Toner density detecting method

Publications (2)

Publication Number Publication Date
JPS57104159A true JPS57104159A (en) 1982-06-29
JPS6367184B2 JPS6367184B2 (en) 1988-12-23

Family

ID=16084748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55180523A Granted JPS57104159A (en) 1980-12-22 1980-12-22 Toner density detecting method

Country Status (1)

Country Link
JP (1) JPS57104159A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190966A (en) * 1982-05-01 1983-11-08 Minolta Camera Co Ltd Electrophotographic copying machine
JPS6111765A (en) * 1984-06-26 1986-01-20 Konishiroku Photo Ind Co Ltd Device for controlling image
JPS63311368A (en) * 1987-06-15 1988-12-20 Ricoh Co Ltd Image control method for image forming device
US6029021A (en) * 1996-12-20 2000-02-22 Fuji Xerox Co., Ltd. Image forming apparatus having an adaptive mode density control system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144265A (en) * 1979-04-28 1980-11-11 Ricoh Co Ltd Developing method for electrostatic latent image

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144265A (en) * 1979-04-28 1980-11-11 Ricoh Co Ltd Developing method for electrostatic latent image

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190966A (en) * 1982-05-01 1983-11-08 Minolta Camera Co Ltd Electrophotographic copying machine
JPS6111765A (en) * 1984-06-26 1986-01-20 Konishiroku Photo Ind Co Ltd Device for controlling image
JPH0135345B2 (en) * 1984-06-26 1989-07-25 Konishiroku Photo Ind
JPS63311368A (en) * 1987-06-15 1988-12-20 Ricoh Co Ltd Image control method for image forming device
US6029021A (en) * 1996-12-20 2000-02-22 Fuji Xerox Co., Ltd. Image forming apparatus having an adaptive mode density control system
US6173134B1 (en) 1996-12-20 2001-01-09 Fuji Xerox Co., Ltd. Image forming system having toner consumption predicting device

Also Published As

Publication number Publication date
JPS6367184B2 (en) 1988-12-23

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