JPS57148754A - Developer - Google Patents

Developer

Info

Publication number
JPS57148754A
JPS57148754A JP56034374A JP3437481A JPS57148754A JP S57148754 A JPS57148754 A JP S57148754A JP 56034374 A JP56034374 A JP 56034374A JP 3437481 A JP3437481 A JP 3437481A JP S57148754 A JPS57148754 A JP S57148754A
Authority
JP
Japan
Prior art keywords
improving agent
developer
sizes
fluidity improving
toner particles
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
JP56034374A
Other languages
Japanese (ja)
Other versions
JPH0119143B2 (en
Inventor
Tetsuo Hasegawa
Hiroyuki Suematsu
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 JP56034374A priority Critical patent/JPS57148754A/en
Priority to DE3208635A priority patent/DE3208635C2/en
Publication of JPS57148754A publication Critical patent/JPS57148754A/en
Priority to US06/558,702 priority patent/US4555467A/en
Publication of JPH0119143B2 publication Critical patent/JPH0119143B2/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
    • 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds
    • G03G9/09725—Silicon-oxides; Silicates

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a developer which is stable in developing performance and pressure fixing performance and is highly durable despite repetitive use by contg. toner particles and a fluidity improving agent granulated to specific sizes. CONSTITUTION:A developer contg. toner particles and a fluidity improving agent granulated to sizes 0.1-20 times average grain sizes of the toner particles. The contents of said fluidity improving agent are preferably about 0.1-10pts.wt. based on 100pts.wt. the toner. At about <=0.1pts.wt., durability is not sufficient, and at about >=10pts.wt., fixability is poor. Colloidal silica, alumina powder, etc. are suited for the fluidity improving agent, and those of 5-100mmu primary average particle sizes are preferable. These the granulated by a method of aggregating these alone or solidifying these with a resin, etc. Various kinds of resins including natural and synthetic ones are usable, and it is effective in improving the durability of the developer to solidify these soft as they are easier to loosen.
JP56034374A 1981-03-10 1981-03-10 Developer Granted JPS57148754A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56034374A JPS57148754A (en) 1981-03-10 1981-03-10 Developer
DE3208635A DE3208635C2 (en) 1981-03-10 1982-03-10 Electrophotographic developer and process for its manufacture
US06/558,702 US4555467A (en) 1981-03-10 1983-12-06 Developer having improved flow characteristics and a process for producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56034374A JPS57148754A (en) 1981-03-10 1981-03-10 Developer

Publications (2)

Publication Number Publication Date
JPS57148754A true JPS57148754A (en) 1982-09-14
JPH0119143B2 JPH0119143B2 (en) 1989-04-10

Family

ID=12412389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56034374A Granted JPS57148754A (en) 1981-03-10 1981-03-10 Developer

Country Status (1)

Country Link
JP (1) JPS57148754A (en)

Also Published As

Publication number Publication date
JPH0119143B2 (en) 1989-04-10

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