JPS5683759A - Two-color development method by one-component type magnetic toner - Google Patents

Two-color development method by one-component type magnetic toner

Info

Publication number
JPS5683759A
JPS5683759A JP15972679A JP15972679A JPS5683759A JP S5683759 A JPS5683759 A JP S5683759A JP 15972679 A JP15972679 A JP 15972679A JP 15972679 A JP15972679 A JP 15972679A JP S5683759 A JPS5683759 A JP S5683759A
Authority
JP
Japan
Prior art keywords
latent image
potential
development
images
type magnetic
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
JP15972679A
Other languages
Japanese (ja)
Inventor
Junichi Tashiro
Junzo Nakajima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15972679A priority Critical patent/JPS5683759A/en
Publication of JPS5683759A publication Critical patent/JPS5683759A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)

Abstract

PURPOSE: To form two-color images through two times of development by the use of a one- component type magnetic toner by setting the absolute value of the latent image potential for the background potential of one latent image so as not to exceed twice the lower limit of the latent image potential at which the toner can be stuck and forming the electrostatic latent images.
CONSTITUTION: This relates to a method of forming the electrostatic latent images of 3-value levels suited for positive development and reversal development and developing these by using a one-component type magnetic toners of two colors, wherein the absolute value of the latent image potential for the background potential V2 of at least one latent image is so set as not to exceed twice the lower limit value of the latent image potential at which the toner can be stuck, by making use of the fact that unless the latent image potential exceeds the specific lower limit value the images are not developed, then at the time of developing the one electrostatic latent image, the development bias potential VB3 of the high level latent image is set between the potential of the other electrostatic latent image differing in charging polarities, for example, the low level latent image potential V1 and the background potential V2, and the two-color images are formed by two times of development.
COPYRIGHT: (C)1981,JPO&Japio
JP15972679A 1979-12-11 1979-12-11 Two-color development method by one-component type magnetic toner Pending JPS5683759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15972679A JPS5683759A (en) 1979-12-11 1979-12-11 Two-color development method by one-component type magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15972679A JPS5683759A (en) 1979-12-11 1979-12-11 Two-color development method by one-component type magnetic toner

Publications (1)

Publication Number Publication Date
JPS5683759A true JPS5683759A (en) 1981-07-08

Family

ID=15699929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15972679A Pending JPS5683759A (en) 1979-12-11 1979-12-11 Two-color development method by one-component type magnetic toner

Country Status (1)

Country Link
JP (1) JPS5683759A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831359A (en) * 1981-08-20 1983-02-24 Matsushita Electric Ind Co Ltd Image recording device
JPS58159551A (en) * 1982-03-17 1983-09-21 Fujitsu Ltd Multicolor recording device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831359A (en) * 1981-08-20 1983-02-24 Matsushita Electric Ind Co Ltd Image recording device
JPS58159551A (en) * 1982-03-17 1983-09-21 Fujitsu Ltd Multicolor recording device

Similar Documents

Publication Publication Date Title
JPS57155553A (en) Electrostatic image developing method
JPS53136838A (en) Automatic controlling method of image quality in transfer type electrostatic copier
JPS5430043A (en) Copier acting as facsimile
JPS5624359A (en) Dry type binary developer for two-color electrophotography
JPS5683757A (en) Electrophotographic type two-color copy recording method
JPS5683759A (en) Two-color development method by one-component type magnetic toner
JPS55157755A (en) Developing method
JPS54155840A (en) Developing method in two color electrophotographic copier
JPS5511226A (en) Electrostatic latent image developing method
JPS53121623A (en) Dichromatic electrophotographic copying method
JPS547338A (en) Two-color electrophotographic copying method
JPS547337A (en) Two-color copying method
JPS547332A (en) Electrophotographic method
JPS55159456A (en) Two-color image developing method
JPS5691252A (en) Two color developing method
JPS5517143A (en) Two color recording method
JPS5687059A (en) Two-color electrophotographic recorder
JPS54134631A (en) Electrophotographic copying process
WO1989002615A3 (en) Electrophotographic method and apparatus
JPS5557864A (en) Developing method of electrophotography
JPS57120957A (en) Tri-color electrophotographic method
JPS52108132A (en) Electrostatic latent image development
JPS54134438A (en) Electrophotographic copying method
JPS52133218A (en) Electrophotographic copying
JPS54130127A (en) Magnetic brush developing method