JPS54116937A - Image forming apparatus - Google Patents

Image forming apparatus

Info

Publication number
JPS54116937A
JPS54116937A JP2462478A JP2462478A JPS54116937A JP S54116937 A JPS54116937 A JP S54116937A JP 2462478 A JP2462478 A JP 2462478A JP 2462478 A JP2462478 A JP 2462478A JP S54116937 A JPS54116937 A JP S54116937A
Authority
JP
Japan
Prior art keywords
developing agent
screen
circulating passage
circulating
image forming
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
JP2462478A
Other languages
Japanese (ja)
Other versions
JPS6339909B2 (en
Inventor
Takao Tsuji
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 JP2462478A priority Critical patent/JPS54116937A/en
Publication of JPS54116937A publication Critical patent/JPS54116937A/en
Publication of JPS6339909B2 publication Critical patent/JPS6339909B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE: To make it possible to circulate and reuse a developing agent by providing a plurality of fitering members in a developing agent circulating passage thereby to filter out the foreign substance from the developing agent.
CONSTITUTION: The toners 52, which are caught on the surface of a rotating drum 14, are removed by means of a blade 50 and are guided to a circulating passage 53 and further to a developing apparatus 19 by the action of a screw 51. There is arranged in the circulating passage 53 a screen 54 which is used to separate the developing agent from other foreign substance. The screen 54 is equipped with several screens 54a, 54b and 54c which are arranged to have net sizes increased in the direction of the circulating direction of the developing agent. Thus, the foreign substances are stepwise removed in accordance with their sizes so that the clogging of the screen can be delayed.
COPYRIGHT: (C)1979,JPO&Japio
JP2462478A 1978-03-03 1978-03-03 Image forming apparatus Granted JPS54116937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2462478A JPS54116937A (en) 1978-03-03 1978-03-03 Image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2462478A JPS54116937A (en) 1978-03-03 1978-03-03 Image forming apparatus

Publications (2)

Publication Number Publication Date
JPS54116937A true JPS54116937A (en) 1979-09-11
JPS6339909B2 JPS6339909B2 (en) 1988-08-08

Family

ID=12143289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2462478A Granted JPS54116937A (en) 1978-03-03 1978-03-03 Image forming apparatus

Country Status (1)

Country Link
JP (1) JPS54116937A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955463A (en) * 1982-09-24 1984-03-30 Mita Ind Co Ltd Toner density controlling method of two-component developer
JPS5975268A (en) * 1982-10-22 1984-04-27 Mita Ind Co Ltd Method and device for adjusting toner density

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955463A (en) * 1982-09-24 1984-03-30 Mita Ind Co Ltd Toner density controlling method of two-component developer
JPH0559427B2 (en) * 1982-09-24 1993-08-31 Mita Industrial Co Ltd
JPS5975268A (en) * 1982-10-22 1984-04-27 Mita Ind Co Ltd Method and device for adjusting toner density
JPH0376457B2 (en) * 1982-10-22 1991-12-05 Mita Industrial Co Ltd

Also Published As

Publication number Publication date
JPS6339909B2 (en) 1988-08-08

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