JPS5522767A - Magnetic toner developing apparatus - Google Patents

Magnetic toner developing apparatus

Info

Publication number
JPS5522767A
JPS5522767A JP9646478A JP9646478A JPS5522767A JP S5522767 A JPS5522767 A JP S5522767A JP 9646478 A JP9646478 A JP 9646478A JP 9646478 A JP9646478 A JP 9646478A JP S5522767 A JPS5522767 A JP S5522767A
Authority
JP
Japan
Prior art keywords
toner
sleeve
image
latent image
magnetic toner
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.)
Pending
Application number
JP9646478A
Other languages
Japanese (ja)
Inventor
Akitomo Tejima
Junzo Nakajima
Masakatsu Horie
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9646478A priority Critical patent/JPS5522767A/en
Publication of JPS5522767A publication Critical patent/JPS5522767A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To prevent deterioration of an electsostatic latent image and to enhance recording density and quality, by opening a shutter provided near a doctor blade at start of developing and closing it at the end to control a magnetic toner.
CONSTITUTION: Sleeve 1 is fixed and only magnetic roller 2 in sleeve 1 rotates. When roller 2 rotates in direction arrow A, magnetic toner 3 attached onto sleeve 1 moves in direction arrow B and toner 3 is trimmed to a constant thickness layer with doctor blade 4. When toner 3 approaches an electrostatic latent image 6 formed on an electrostatic latent image bearing drum 5, a charge reverse to image 6 in polarity is injected to toner 3 from grounded sleeve 1 to develop image 6. Shutter 7 provided near blade 4 opens at start of developing and closes at the end to control toner 3, permitting deterioration of image 6 to be prevented and recording density and quality to be enhanced.
COPYRIGHT: (C)1980,JPO&Japio
JP9646478A 1978-08-08 1978-08-08 Magnetic toner developing apparatus Pending JPS5522767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9646478A JPS5522767A (en) 1978-08-08 1978-08-08 Magnetic toner developing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9646478A JPS5522767A (en) 1978-08-08 1978-08-08 Magnetic toner developing apparatus

Publications (1)

Publication Number Publication Date
JPS5522767A true JPS5522767A (en) 1980-02-18

Family

ID=14165743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9646478A Pending JPS5522767A (en) 1978-08-08 1978-08-08 Magnetic toner developing apparatus

Country Status (1)

Country Link
JP (1) JPS5522767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373798A (en) * 1979-04-23 1983-02-15 Canon Kabushiki Kaisha Developing device with shutter blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373798A (en) * 1979-04-23 1983-02-15 Canon Kabushiki Kaisha Developing device with shutter blade

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