JPS5766444A - Electrophotography method - Google Patents

Electrophotography method

Info

Publication number
JPS5766444A
JPS5766444A JP55142794A JP14279480A JPS5766444A JP S5766444 A JPS5766444 A JP S5766444A JP 55142794 A JP55142794 A JP 55142794A JP 14279480 A JP14279480 A JP 14279480A JP S5766444 A JPS5766444 A JP S5766444A
Authority
JP
Japan
Prior art keywords
low
electric field
resistance
photoreceptor
developing sleeve
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
JP55142794A
Other languages
Japanese (ja)
Inventor
Hiroharu Suzuki
Toshio Kaneko
Shigekazu Enoki
Hajime Koyama
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55142794A priority Critical patent/JPS5766444A/en
Priority to GB8130267A priority patent/GB2088076A/en
Priority to FR8119163A priority patent/FR2492122A1/en
Priority to DE19813140639 priority patent/DE3140639A1/en
Publication of JPS5766444A publication Critical patent/JPS5766444A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0821—Developers with toner particles characterised by physical parameters
    • G03G9/0823—Electric parameters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer
    • G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush

Abstract

PURPOSE:To obtain an excellent image on ordinary paper by using a developer obtained by mixing an electrostatic induction accelerator, made of low-resistance particles, into high-resistance magnetic toner. CONSTITUTION:A photoreceptor 3 is installed at the distance of a development gap 4 from a developing sleeve 2 turning outside of a fixed magnet 1 in the developing sleeve. In the development gap 4, high-resistance magnetic toner (a) and low-resistance particles (b) are interposed so as to surround the (a) by the (b), thereby accellerating electrostatic induction. A developer containing the mixed (a) and (b) has high resistivity in a low electric field and low resistivity in a high electric field, so it is suitable for electrophotography requiring a high electric field at a development part and a low electirc field at a transfer part. Since the grain side of the (a) is greater thatn that of the (b), selective sticking to transfer paper occurs and a mixing ratio varies. To prevent those, the mixed toner sticking to the transfer paper or the photoreceptor and having the same ratio is supplemented to a developer supply tank.
JP55142794A 1980-10-13 1980-10-13 Electrophotography method Pending JPS5766444A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55142794A JPS5766444A (en) 1980-10-13 1980-10-13 Electrophotography method
GB8130267A GB2088076A (en) 1980-10-13 1981-10-07 Electrophotographic Developing and Transfer Process
FR8119163A FR2492122A1 (en) 1980-10-13 1981-10-12 ELECTROPHOTOGRAPHIC PROCESS USING A TWO-COMPONENT DEVELOPER
DE19813140639 DE3140639A1 (en) 1980-10-13 1981-10-13 Electrophotographic process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142794A JPS5766444A (en) 1980-10-13 1980-10-13 Electrophotography method

Publications (1)

Publication Number Publication Date
JPS5766444A true JPS5766444A (en) 1982-04-22

Family

ID=15323762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142794A Pending JPS5766444A (en) 1980-10-13 1980-10-13 Electrophotography method

Country Status (1)

Country Link
JP (1) JPS5766444A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6374654U (en) * 1986-11-01 1988-05-18

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333152A (en) * 1976-09-08 1978-03-28 Matsushita Electric Ind Co Ltd Dry developer agent
JPS54147837A (en) * 1978-05-12 1979-11-19 Minolta Camera Co Ltd Electrophotogaraphic developing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333152A (en) * 1976-09-08 1978-03-28 Matsushita Electric Ind Co Ltd Dry developer agent
JPS54147837A (en) * 1978-05-12 1979-11-19 Minolta Camera Co Ltd Electrophotogaraphic developing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6374654U (en) * 1986-11-01 1988-05-18

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