JPS55120041A - Magnetic developer - Google Patents

Magnetic developer

Info

Publication number
JPS55120041A
JPS55120041A JP2732679A JP2732679A JPS55120041A JP S55120041 A JPS55120041 A JP S55120041A JP 2732679 A JP2732679 A JP 2732679A JP 2732679 A JP2732679 A JP 2732679A JP S55120041 A JPS55120041 A JP S55120041A
Authority
JP
Japan
Prior art keywords
magnetic
developer
particle size
silicon dioxide
image
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
JP2732679A
Other languages
Japanese (ja)
Other versions
JPS638461B2 (en
Inventor
Yasuo Mihashi
Masaki Uchiyama
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 JP2732679A priority Critical patent/JPS55120041A/en
Publication of JPS55120041A publication Critical patent/JPS55120041A/en
Publication of JPS638461B2 publication Critical patent/JPS638461B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain an insulating magnetic developer capable of forming a fog-free clear image of high density by blending specified silicon dioxide particles into an insulating magnetic toner.
CONSTITUTION: About 0.01W2, preferably 0.05W1pts.wt. of trimethylsiloxyl group-containing silicon dioxide particles with a particle size of about 5W20mμ is blended into 100pts. of toner particels based on particles with a particle size of about 5W20μ and made of mixture of magnetic powder such as magnetite or ferrite powder and a binding resin such as styrene type resin, acrylic resin or waxes. The resulting magnetic developer is held on a developer support set away from an electrostatic image retentive body, and it is transferred onto the body by the action of a magnetic field to develop the body. By this method an image of high resolving power can be formed.
COPYRIGHT: (C)1980,JPO&Japio
JP2732679A 1979-03-09 1979-03-09 Magnetic developer Granted JPS55120041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2732679A JPS55120041A (en) 1979-03-09 1979-03-09 Magnetic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2732679A JPS55120041A (en) 1979-03-09 1979-03-09 Magnetic developer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP61204921A Division JPS6270867A (en) 1986-08-29 1986-08-29 Method for developing electrostatically charged image

Publications (2)

Publication Number Publication Date
JPS55120041A true JPS55120041A (en) 1980-09-16
JPS638461B2 JPS638461B2 (en) 1988-02-23

Family

ID=12217941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2732679A Granted JPS55120041A (en) 1979-03-09 1979-03-09 Magnetic developer

Country Status (1)

Country Link
JP (1) JPS55120041A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185405A (en) * 1982-04-26 1983-10-29 Nippon Aerojiru Kk Fine powder of surface-modified metal oxide
JPS59137305A (en) * 1983-01-27 1984-08-07 Nippon Aerojiru Kk Surface-modified fine metallic oxide powder
US4555467A (en) * 1981-03-10 1985-11-26 Canon Kabushiki Kaisha Developer having improved flow characteristics and a process for producing same
US5066558A (en) * 1988-09-30 1991-11-19 Canon Kabushiki Kaisha Developer for developing electrostatic images
US5480755A (en) * 1991-03-08 1996-01-02 Canon Kabushiki Kaisha Magnetic toner, image forming method, surface-modified fine silica powder and process for its production
WO2009123329A1 (en) 2008-03-31 2009-10-08 キヤノン株式会社 Toner and image formation method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US890973A (en) * 1904-05-23 1908-06-16 Padone Filippi Ship's propeller.
JPS5331136A (en) * 1976-06-30 1978-03-24 Minnesota Mining & Mfg Method of selectively attaching toner particles on surface of material
JPS5359430A (en) * 1976-06-09 1978-05-29 Konishiroku Photo Ind Co Ltd Electrostatic latent image developer
JPS5359340A (en) * 1976-11-09 1978-05-29 Omron Tateisi Electronics Co Poll information processor
JPS53133446A (en) * 1977-04-27 1978-11-21 Canon Inc Developer for magnetic brush
JPS53143326A (en) * 1977-05-18 1978-12-13 Eastman Kodak Co Developing agent for use in forming visible picture and method thereof
JPS542743A (en) * 1977-06-08 1979-01-10 Canon Inc Toner for static image and its manufacture
JPS542742A (en) * 1977-06-08 1979-01-10 Canon Inc Manufacture of toner for developing static image
JPS54151451A (en) * 1978-03-28 1979-11-28 Du Pont Particulate resist composition

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US890973A (en) * 1904-05-23 1908-06-16 Padone Filippi Ship's propeller.
JPS5359430A (en) * 1976-06-09 1978-05-29 Konishiroku Photo Ind Co Ltd Electrostatic latent image developer
JPS5331136A (en) * 1976-06-30 1978-03-24 Minnesota Mining & Mfg Method of selectively attaching toner particles on surface of material
JPS5359340A (en) * 1976-11-09 1978-05-29 Omron Tateisi Electronics Co Poll information processor
JPS53133446A (en) * 1977-04-27 1978-11-21 Canon Inc Developer for magnetic brush
JPS53143326A (en) * 1977-05-18 1978-12-13 Eastman Kodak Co Developing agent for use in forming visible picture and method thereof
JPS542743A (en) * 1977-06-08 1979-01-10 Canon Inc Toner for static image and its manufacture
JPS542742A (en) * 1977-06-08 1979-01-10 Canon Inc Manufacture of toner for developing static image
JPS54151451A (en) * 1978-03-28 1979-11-28 Du Pont Particulate resist composition

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555467A (en) * 1981-03-10 1985-11-26 Canon Kabushiki Kaisha Developer having improved flow characteristics and a process for producing same
JPS58185405A (en) * 1982-04-26 1983-10-29 Nippon Aerojiru Kk Fine powder of surface-modified metal oxide
JPH0131442B2 (en) * 1982-04-26 1989-06-26 Nippon Aerojiru Kk
JPS59137305A (en) * 1983-01-27 1984-08-07 Nippon Aerojiru Kk Surface-modified fine metallic oxide powder
JPH0132161B2 (en) * 1983-01-27 1989-06-29 Nippon Aerojiru Kk
US5066558A (en) * 1988-09-30 1991-11-19 Canon Kabushiki Kaisha Developer for developing electrostatic images
US5480755A (en) * 1991-03-08 1996-01-02 Canon Kabushiki Kaisha Magnetic toner, image forming method, surface-modified fine silica powder and process for its production
WO2009123329A1 (en) 2008-03-31 2009-10-08 キヤノン株式会社 Toner and image formation method
US7704661B2 (en) 2008-03-31 2010-04-27 Canon Kabushiki Kaisha Toner and image forming method

Also Published As

Publication number Publication date
JPS638461B2 (en) 1988-02-23

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