JPS57181555A - Spherical powdered iron carrier - Google Patents

Spherical powdered iron carrier

Info

Publication number
JPS57181555A
JPS57181555A JP56066204A JP6620481A JPS57181555A JP S57181555 A JPS57181555 A JP S57181555A JP 56066204 A JP56066204 A JP 56066204A JP 6620481 A JP6620481 A JP 6620481A JP S57181555 A JPS57181555 A JP S57181555A
Authority
JP
Japan
Prior art keywords
iron
manganese
silicon
high electric
electric resistance
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
JP56066204A
Other languages
Japanese (ja)
Other versions
JPH0121504B2 (en
Inventor
Yasuyuki Iitsuna
Keigo Aoi
Shoichi Takeuchi
Keiji Sato
Hiroshi Tokura
Tsuneo Wada
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.)
DOWA TEPPUN KOGYO KK
Konica Minolta Inc
Original Assignee
DOWA TEPPUN KOGYO KK
Konica Minolta 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 DOWA TEPPUN KOGYO KK, Konica Minolta Inc filed Critical DOWA TEPPUN KOGYO KK
Priority to JP56066204A priority Critical patent/JPS57181555A/en
Publication of JPS57181555A publication Critical patent/JPS57181555A/en
Publication of JPH0121504B2 publication Critical patent/JPH0121504B2/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
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1087—Specified elemental magnetic metal or alloy, e.g. alnico comprising iron, nickel, cobalt, and aluminum, or permalloy comprising iron and nickel
    • 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
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To obtain a carrier with high surface hardness, superior shelf stability, superior wear resistance and high electric resistance by depositing silicon and manganese on the surface of iron powder at high density. CONSTITUTION:Iron contg. 0-10wt% silicon and manganese and having 1-4mm. diameter as a core material is charged into an electric wire gun, and a high electric current is supplied to the gun to melt the iron by arc discharge. A highly pressurized inert gas is then introduced to spray the molten iron, and the sprayed iron is cooled by blowing into a refrigerant. Silicon and manganese are allowed to rise to the iron surface by surface tension and deposited to form iron powder with high roundness as well as each high density layer with high electric resistance. Since the resulting spherical powdered iron carrier has each surface layer with high electric resistance such as 10<9>-10<12>OMEGA.cm, when it is used to develop an electrostatic charge image formed on a photoreceptor attached to a copier, a sharp toner image can be formed without leaking the charges of the latent image.
JP56066204A 1981-05-02 1981-05-02 Spherical powdered iron carrier Granted JPS57181555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066204A JPS57181555A (en) 1981-05-02 1981-05-02 Spherical powdered iron carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066204A JPS57181555A (en) 1981-05-02 1981-05-02 Spherical powdered iron carrier

Publications (2)

Publication Number Publication Date
JPS57181555A true JPS57181555A (en) 1982-11-09
JPH0121504B2 JPH0121504B2 (en) 1989-04-21

Family

ID=13309069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066204A Granted JPS57181555A (en) 1981-05-02 1981-05-02 Spherical powdered iron carrier

Country Status (1)

Country Link
JP (1) JPS57181555A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6292149U (en) * 1985-11-28 1987-06-12
JPH04321078A (en) * 1990-12-28 1992-11-11 Konica Corp Developing device
JPH04348367A (en) * 1991-07-25 1992-12-03 Konica Corp Developing method
JPH08286427A (en) * 1996-06-04 1996-11-01 Minolta Co Ltd Toner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834190A (en) * 1971-09-06 1973-05-16
JPS4851638A (en) * 1971-10-28 1973-07-20
JPS51127735A (en) * 1975-04-14 1976-11-08 Hoechst Ag Method of tonor carrier particles for dry duplicator operated by magnetic brush method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834190A (en) * 1971-09-06 1973-05-16
JPS4851638A (en) * 1971-10-28 1973-07-20
JPS51127735A (en) * 1975-04-14 1976-11-08 Hoechst Ag Method of tonor carrier particles for dry duplicator operated by magnetic brush method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6292149U (en) * 1985-11-28 1987-06-12
JPH04321078A (en) * 1990-12-28 1992-11-11 Konica Corp Developing device
JPH04348367A (en) * 1991-07-25 1992-12-03 Konica Corp Developing method
JPH08286427A (en) * 1996-06-04 1996-11-01 Minolta Co Ltd Toner

Also Published As

Publication number Publication date
JPH0121504B2 (en) 1989-04-21

Similar Documents

Publication Publication Date Title
US4039145A (en) Electrostatic powdering nozzle
MX9702463A (en) Apparatus for coating substrates with inductively charged resinous powder particles.
JPH08240983A (en) Ceramic coating composition for hybrid scavengerless developing donor roll
JPS57502109A (en)
JPS56140358A (en) Carrier for developing electrostatically charged image
ES8704358A1 (en) Apparatus for electrostatically coating articles with a powdery coating material.
US6226483B1 (en) Charging roller and processes thereof
NZ335969A (en) Method for controlling and removing dust and other particles from a material
JPS5799654A (en) Carrier for electrostatic image developer
US5419994A (en) Carrier for electrophotographic developer, process for preparing the same and developer prepared by using said carrier
JPS5529834A (en) Electrophotographic developing apparatus
US6398702B1 (en) Roll having zirconia coating
US5608502A (en) Method for treating magnet roll by blasting with nonmagnetic spherical particles
GB1448187A (en) Photoconductive bands for photocopying machines
US20040253024A1 (en) Charging member having titanium oxide outer coating on grit blasted substrate
US4772982A (en) Powder charging apparatus and electrostatic powder coating apparatus
US6733891B1 (en) Roll having glass coating
EP0230723B1 (en) Powder charging apparatus and electrostatic powder coating apparatus
JPS54126039A (en) Magnetic toner
JPS5421729A (en) Electrophotographic carrier material
JPS57111828A (en) Magnetic recording medium
US20040029692A1 (en) Donor roll having a fluoropolymer layer
JPS6479773A (en) Developing device
JPS5610361A (en) Evaluating apparatus for electrostatic powdered coating material and elecrostatic spray gun therefor
JPS5614261A (en) Developing device