JPS5614261A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5614261A
JPS5614261A JP9116379A JP9116379A JPS5614261A JP S5614261 A JPS5614261 A JP S5614261A JP 9116379 A JP9116379 A JP 9116379A JP 9116379 A JP9116379 A JP 9116379A JP S5614261 A JPS5614261 A JP S5614261A
Authority
JP
Japan
Prior art keywords
magnet
latent image
toner
roller
blade
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
JP9116379A
Other languages
Japanese (ja)
Other versions
JPS6341069B2 (en
Inventor
Kozo Arao
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 JP9116379A priority Critical patent/JPS5614261A/en
Publication of JPS5614261A publication Critical patent/JPS5614261A/en
Publication of JPS6341069B2 publication Critical patent/JPS6341069B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To thinly and uniformly coat the high resistance toner on a toner carrying body such as rubber roller by magnetism generating means such as magnet and magnetic-line-of-force focusing means constituted of a magnetic material opposing thereto at the time of developing the latent image of a latent image holding member. CONSTITUTION:A rubber roller 7 is constituted of a rubber layer 7a and a carrying roller 9 composed of a nonmagnetic material and the high-electric resistance toner 10 is supplied to the surface of the roller 7 from a hopper 9. The supplied toner 10 is uniformized to a predetermined thickness by a magnetic material blade 11 formed by iron or magnet and the magnet 12 connotatively secured in the roller 7. The tip width of the blade 11 is smaller than the tip width of the magnet 12. Changing the relative positions of the blade 11 and the magnet 12 causes the shape of the magnetic field to change and enables the setting of the toner layer to an arbitrary thickness. The toner layer having been made to a uniform thickness is rubbed by a friction charging member 13 and is thus charged to the polarity opposite from that of the latent image, whereby the latent image of the latent image surface 14 is developed.
JP9116379A 1979-07-16 1979-07-16 Developing device Granted JPS5614261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9116379A JPS5614261A (en) 1979-07-16 1979-07-16 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9116379A JPS5614261A (en) 1979-07-16 1979-07-16 Developing device

Publications (2)

Publication Number Publication Date
JPS5614261A true JPS5614261A (en) 1981-02-12
JPS6341069B2 JPS6341069B2 (en) 1988-08-15

Family

ID=14018809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9116379A Granted JPS5614261A (en) 1979-07-16 1979-07-16 Developing device

Country Status (1)

Country Link
JP (1) JPS5614261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101673A (en) * 1982-12-02 1984-06-12 Ricoh Co Ltd Developing device
JPS63225267A (en) * 1987-03-16 1988-09-20 Canon Inc Developing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0673039U (en) * 1993-03-20 1994-10-11 村上機械株式会社 Core tube recovery device for bobbin supply and discharge equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101673A (en) * 1982-12-02 1984-06-12 Ricoh Co Ltd Developing device
JPS63225267A (en) * 1987-03-16 1988-09-20 Canon Inc Developing device

Also Published As

Publication number Publication date
JPS6341069B2 (en) 1988-08-15

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