JPS5699365A - Electrophotographic method - Google Patents

Electrophotographic method

Info

Publication number
JPS5699365A
JPS5699365A JP98480A JP98480A JPS5699365A JP S5699365 A JPS5699365 A JP S5699365A JP 98480 A JP98480 A JP 98480A JP 98480 A JP98480 A JP 98480A JP S5699365 A JPS5699365 A JP S5699365A
Authority
JP
Japan
Prior art keywords
developer
insulation
raw materials
water
mho
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
JP98480A
Other languages
Japanese (ja)
Other versions
JPS6345102B2 (en
Inventor
Toru Matsumoto
Masanori Takenouchi
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 JP98480A priority Critical patent/JPS5699365A/en
Publication of JPS5699365A publication Critical patent/JPS5699365A/en
Publication of JPS6345102B2 publication Critical patent/JPS6345102B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve durability such as continuous use characteristics and provide stability to environmental changes such as high temperature and high humidity by using the developer produced by washing the insulation-characteristics magnetic developer itself or the raw materials of the developer.
CONSTITUTION: The developer which is produced by washing the insulation- characteristic magnetic developer itself or polystyrene resin powder, styrene-butadiene coplymer particles, etc. which are the raw materials of the developer by using a large amount of ion exchange water and which is ≤30×10-6mho/cm in specific conductivity of the water in equilibrium of the time when 100pts.wt. the washed developer and raw materials are immersed in 200pts.wt. ion exchange water of ≤0.1×10-6mho/cm specific conductivity at 25°C and is of a 5W9pH range is used. The insulation-characteristic magnetic developer 11 obtained in this way, is held to 30W300μ thickness by a doctor blade 10 on a developer carrier (nonmagnetic cylinder) 4b having a magnet roll 9, whereby an electrostatic image holding surface (photosensitive drum) 1 is developed. The developer 11 has no hygroscopicity as it has been removed of water-soluble components, thereby enabling the image of high resolution free from any photograhic fog to be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP98480A 1980-01-09 1980-01-09 Electrophotographic method Granted JPS5699365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP98480A JPS5699365A (en) 1980-01-09 1980-01-09 Electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP98480A JPS5699365A (en) 1980-01-09 1980-01-09 Electrophotographic method

Publications (2)

Publication Number Publication Date
JPS5699365A true JPS5699365A (en) 1981-08-10
JPS6345102B2 JPS6345102B2 (en) 1988-09-08

Family

ID=11488857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP98480A Granted JPS5699365A (en) 1980-01-09 1980-01-09 Electrophotographic method

Country Status (1)

Country Link
JP (1) JPS5699365A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02151871A (en) * 1988-12-05 1990-06-11 Fuji Xerox Co Ltd Electrophotographic toner
JPH02236564A (en) * 1989-03-10 1990-09-19 Fuji Xerox Co Ltd Electrophotographic toner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138933A (en) * 1976-05-17 1977-11-19 Ricoh Co Ltd Manufacture of electrophotographic developer
JPS5443036A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138933A (en) * 1976-05-17 1977-11-19 Ricoh Co Ltd Manufacture of electrophotographic developer
JPS5443036A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02151871A (en) * 1988-12-05 1990-06-11 Fuji Xerox Co Ltd Electrophotographic toner
JPH02236564A (en) * 1989-03-10 1990-09-19 Fuji Xerox Co Ltd Electrophotographic toner

Also Published As

Publication number Publication date
JPS6345102B2 (en) 1988-09-08

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