JPS5448254A - Method and device for replenishing of developer - Google Patents

Method and device for replenishing of developer

Info

Publication number
JPS5448254A
JPS5448254A JP11416377A JP11416377A JPS5448254A JP S5448254 A JPS5448254 A JP S5448254A JP 11416377 A JP11416377 A JP 11416377A JP 11416377 A JP11416377 A JP 11416377A JP S5448254 A JPS5448254 A JP S5448254A
Authority
JP
Japan
Prior art keywords
toner
carrier
screw
developer
replenishing
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
JP11416377A
Other languages
Japanese (ja)
Inventor
Michio Ito
Kazuhiro Hirayama
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 JP11416377A priority Critical patent/JPS5448254A/en
Publication of JPS5448254A publication Critical patent/JPS5448254A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE: To maintain developing effect constant by respectively controlling the toner of the mixed developer of toner and carrier according to its concentration and carrier according to the change in developer volume and replenishing these respectively independently.
CONSTITUTION: A toner replenching device 3 is provided with mixers 13, 14 in a hopper 3c and a feed screw 3b in the lower part. A toner concentration decrease signal causes its driving part 9 to respond to revolve the screw 3b, which in turn charges toner into the opening 2a of a developing device 2 through replenishment hole 3a. A carrier replenishing device 4 is provided with a feed screw 4a in the lower part of a hopper 4c and its driving part 5 responds to the replenishment signal having detected the change in devoloper volume and causes the screw 4a to revolve, thus charging carrier into the opening 2b of the developing device through replenishment hole 4b. The toner and carrier having been charged are mixed and agitated by the screw 2c of the developing device. Hence, the toner and carrier of the two component type developer are replenished respectively separately and the developing effect is maintained constant
COPYRIGHT: (C)1979,JPO&Japio
JP11416377A 1977-09-22 1977-09-22 Method and device for replenishing of developer Pending JPS5448254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11416377A JPS5448254A (en) 1977-09-22 1977-09-22 Method and device for replenishing of developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11416377A JPS5448254A (en) 1977-09-22 1977-09-22 Method and device for replenishing of developer

Publications (1)

Publication Number Publication Date
JPS5448254A true JPS5448254A (en) 1979-04-16

Family

ID=14630731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11416377A Pending JPS5448254A (en) 1977-09-22 1977-09-22 Method and device for replenishing of developer

Country Status (1)

Country Link
JP (1) JPS5448254A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159654A (en) * 1980-05-14 1981-12-09 Fuji Xerox Co Ltd Developing method
JPH0394560U (en) * 1990-01-19 1991-09-26
WO2004081669A1 (en) * 2003-03-10 2004-09-23 Mitsubishi Chemical Corporation Toner for developing electrostatic charge image and process for producing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159654A (en) * 1980-05-14 1981-12-09 Fuji Xerox Co Ltd Developing method
JPH0143301B2 (en) * 1980-05-14 1989-09-20 Fuji Xerox Co Ltd
JPH0394560U (en) * 1990-01-19 1991-09-26
WO2004081669A1 (en) * 2003-03-10 2004-09-23 Mitsubishi Chemical Corporation Toner for developing electrostatic charge image and process for producing the same

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