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JPS5532059A - Method and apparatus for electrophotographic developing - Google Patents

Method and apparatus for electrophotographic developing

Info

Publication number
JPS5532059A
JPS5532059A JP10514578A JP10514578A JPS5532059A JP S5532059 A JPS5532059 A JP S5532059A JP 10514578 A JP10514578 A JP 10514578A JP 10514578 A JP10514578 A JP 10514578A JP S5532059 A JPS5532059 A JP S5532059A
Authority
JP
Japan
Prior art keywords
developer
sleeve
images
distinctness
superior
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
JP10514578A
Other languages
Japanese (ja)
Other versions
JPS6330621B2 (en
Inventor
Masaharu Okubo
Yujiro Ando
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 JP10514578A priority Critical patent/JPS5532059A/en
Publication of JPS5532059A publication Critical patent/JPS5532059A/en
Publication of JPS6330621B2 publication Critical patent/JPS6330621B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain images of superior distinctness and free from ground fog by using conductive developer and performing developing while allowing the developer particles to vibrate through application of low frequency alternating electric fields between the electrostatic holding medium and developer.
CONSTITUTION: An electrostatic latent image holding medium 40 rotates in the arrow direction and a non-magnetic rotary sleeve 41 rotates at the peripheral speed equal to or slightly differing from that of said medium. In the inner side of the sleeve 41 is provided with a fixed magnetic mean 42 having alternate, magnetic pole. The developer 43 containing conductive toner particles having magnetisum is being stirred by screws 44, 45. AC voltage of, e.g., about 1KHz at effective values 50W200V, is applied the sleeve 41 through AC power source 52. Then, the developer particles vibrate and visualize only the image parts and the deposition of the developer on the non-image parts is removed. This enables the images of superior distinctness to be obtained and enables the images free from uneven densities and of less ground fog to be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP10514578A 1978-08-29 1978-08-29 Method and apparatus for electrophotographic developing Granted JPS5532059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10514578A JPS5532059A (en) 1978-08-29 1978-08-29 Method and apparatus for electrophotographic developing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10514578A JPS5532059A (en) 1978-08-29 1978-08-29 Method and apparatus for electrophotographic developing

Publications (2)

Publication Number Publication Date
JPS5532059A true JPS5532059A (en) 1980-03-06
JPS6330621B2 JPS6330621B2 (en) 1988-06-20

Family

ID=14399556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10514578A Granted JPS5532059A (en) 1978-08-29 1978-08-29 Method and apparatus for electrophotographic developing

Country Status (1)

Country Link
JP (1) JPS5532059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073647A (en) * 1983-09-30 1985-04-25 Canon Inc Image forming method
JPS6127561A (en) * 1984-07-18 1986-02-07 Katsuragawa Denki Kk Developing method of electrophotography

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030537A (en) * 1973-02-15 1975-03-26
US3893418A (en) * 1974-05-30 1975-07-08 Xerox Corp Xerographic developing apparatus
US3909258A (en) * 1972-03-15 1975-09-30 Minnesota Mining & Mfg Electrographic development process
JPS5217417A (en) * 1975-07-31 1977-02-09 Sanyo Chem Ind Ltd Process for removal of compound to cause abnormal polymerization

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909258A (en) * 1972-03-15 1975-09-30 Minnesota Mining & Mfg Electrographic development process
JPS5030537A (en) * 1973-02-15 1975-03-26
US3893418A (en) * 1974-05-30 1975-07-08 Xerox Corp Xerographic developing apparatus
JPS5217417A (en) * 1975-07-31 1977-02-09 Sanyo Chem Ind Ltd Process for removal of compound to cause abnormal polymerization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073647A (en) * 1983-09-30 1985-04-25 Canon Inc Image forming method
JPH0568693B2 (en) * 1983-09-30 1993-09-29 Canon Kk
JPS6127561A (en) * 1984-07-18 1986-02-07 Katsuragawa Denki Kk Developing method of electrophotography
JPH0528380B2 (en) * 1984-07-18 1993-04-26 Katsuragawa Denki Kk

Also Published As

Publication number Publication date
JPS6330621B2 (en) 1988-06-20

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