JPS55144265A - Developing method for electrostatic latent image - Google Patents

Developing method for electrostatic latent image

Info

Publication number
JPS55144265A
JPS55144265A JP5299979A JP5299979A JPS55144265A JP S55144265 A JPS55144265 A JP S55144265A JP 5299979 A JP5299979 A JP 5299979A JP 5299979 A JP5299979 A JP 5299979A JP S55144265 A JPS55144265 A JP S55144265A
Authority
JP
Japan
Prior art keywords
toners
developer
nonmagnetic
replenisher
developing
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.)
Pending
Application number
JP5299979A
Other languages
Japanese (ja)
Inventor
Kazuo Kobayashi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP5299979A priority Critical patent/JPS55144265A/en
Publication of JPS55144265A publication Critical patent/JPS55144265A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To enable the obtaining of always constant image quality by applying the developing bias voltage corresponding to the minimum value of the reflected density of the developed toner images and developing the electrostatic latent images by the developer.
CONSTITUTION: The developer D mixed with magnetic toners and nonmagnetic toners is used in a developing device 2 consisting of a photosensitive drum 1 and developing roller 3, etc. and a replenisher 11 which stores the developer D and a replenisher 12 of nonmagnetic toners are provided. The both toners are charged by the frictions to respectively opposite polarities. At the development, the consumption of the nonmagnetic toners is higher. The mixing ratio of the toners is detected by the toner concentration detector 8 mounted to a scraper 7 and if the nonmagnetic toners are less, the specified amount of the toners are replenished from the replenisher 12 into the tank 6 so that the toner ratio of the developer D is maintained constant.
COPYRIGHT: (C)1980,JPO&Japio
JP5299979A 1979-04-28 1979-04-28 Developing method for electrostatic latent image Pending JPS55144265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5299979A JPS55144265A (en) 1979-04-28 1979-04-28 Developing method for electrostatic latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5299979A JPS55144265A (en) 1979-04-28 1979-04-28 Developing method for electrostatic latent image

Publications (1)

Publication Number Publication Date
JPS55144265A true JPS55144265A (en) 1980-11-11

Family

ID=12930618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5299979A Pending JPS55144265A (en) 1979-04-28 1979-04-28 Developing method for electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS55144265A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104159A (en) * 1980-12-22 1982-06-29 Konishiroku Photo Ind Co Ltd Toner density detecting method
JPS59212861A (en) * 1983-05-17 1984-12-01 Sharp Corp Copying machine
JPS61236573A (en) * 1985-04-12 1986-10-21 Canon Inc Developing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104159A (en) * 1980-12-22 1982-06-29 Konishiroku Photo Ind Co Ltd Toner density detecting method
JPS6367184B2 (en) * 1980-12-22 1988-12-23 Konishiroku Photo Ind
JPS59212861A (en) * 1983-05-17 1984-12-01 Sharp Corp Copying machine
JPS61236573A (en) * 1985-04-12 1986-10-21 Canon Inc Developing device

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