JPS5778049A - Development method - Google Patents

Development method

Info

Publication number
JPS5778049A
JPS5778049A JP55154462A JP15446280A JPS5778049A JP S5778049 A JPS5778049 A JP S5778049A JP 55154462 A JP55154462 A JP 55154462A JP 15446280 A JP15446280 A JP 15446280A JP S5778049 A JPS5778049 A JP S5778049A
Authority
JP
Japan
Prior art keywords
developer
sleeve
electrostatic latent
latent image
particle diameter
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
JP55154462A
Other languages
Japanese (ja)
Other versions
JPS6251464B2 (en
Inventor
Toru Matsumoto
Masanori Takenouchi
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP55154462A priority Critical patent/JPS5778049A/en
Priority to DE19813142974 priority patent/DE3142974A1/en
Publication of JPS5778049A publication Critical patent/JPS5778049A/en
Priority to US06/518,317 priority patent/US4430409A/en
Publication of JPS6251464B2 publication Critical patent/JPS6251464B2/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To make a developer stable against environmental change such as high temperature and high humidity in order to obtain a high image quality, by using a developer containing fine silicic acid powder synthesized by a wet method as the developer of an electrostatic latent image. CONSTITUTION:An insulating developer 11 is obtained by adding 0.01-20wt% fine silica powder having 0.01-2mum average primary particle diameter synthesized by a wet method to a toner consisting of 10-70wt% magnetic powder having 0.05- 5mum average particle diameter, a binder resin, and a colorant. A sleeve 4b for bearing a nonmagnetic developer provided with a nonrotating multipolar permanent magnet 9 in its inside is rotated in the arrow direction, the developer 11 fed from a hopper 12 is spread on the sleeve 4b, the developer 11 is given a charge reverse to the charge of an electrostatic latent image by friction between the sleeve 4b face and tone particles, and then, thickness of the developer 11 is made uniformly thin by a doctor blade 10. This sleeve 4b and an electrostatic latent image bearing drum 1 rotating in the arrow direction are arranged opposited to each other in the development part at a constant clearance apart, and the developer 11 is transferred to the drum 1 to execute development.
JP55154462A 1980-10-31 1980-10-31 Development method Granted JPS5778049A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55154462A JPS5778049A (en) 1980-10-31 1980-10-31 Development method
DE19813142974 DE3142974A1 (en) 1980-10-31 1981-10-29 DEVELOPER FOR ELECTROPHOTOGRAPHIC PURPOSES AND DEVELOPMENT METHOD
US06/518,317 US4430409A (en) 1980-10-31 1983-07-29 Developer for electrophotography with wet process silicic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154462A JPS5778049A (en) 1980-10-31 1980-10-31 Development method

Publications (2)

Publication Number Publication Date
JPS5778049A true JPS5778049A (en) 1982-05-15
JPS6251464B2 JPS6251464B2 (en) 1987-10-30

Family

ID=15584763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154462A Granted JPS5778049A (en) 1980-10-31 1980-10-31 Development method

Country Status (1)

Country Link
JP (1) JPS5778049A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05188660A (en) * 1992-01-16 1993-07-30 Hitachi Metals Ltd Developing method
WO2015147208A1 (en) * 2014-03-27 2015-10-01 日本ゼオン株式会社 Toner for developing electrostatic charge image

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448243A (en) * 1977-09-26 1979-04-16 Hitachi Metals Ltd Magnetic toner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448243A (en) * 1977-09-26 1979-04-16 Hitachi Metals Ltd Magnetic toner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05188660A (en) * 1992-01-16 1993-07-30 Hitachi Metals Ltd Developing method
WO2015147208A1 (en) * 2014-03-27 2015-10-01 日本ゼオン株式会社 Toner for developing electrostatic charge image
CN106133612A (en) * 2014-03-27 2016-11-16 日本瑞翁株式会社 Electrostatic image developing toner
US10495993B2 (en) 2014-03-27 2019-12-03 Zeon Corporation Toner for developing electrostatic images

Also Published As

Publication number Publication date
JPS6251464B2 (en) 1987-10-30

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