JPS6470777A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS6470777A
JPS6470777A JP22709687A JP22709687A JPS6470777A JP S6470777 A JPS6470777 A JP S6470777A JP 22709687 A JP22709687 A JP 22709687A JP 22709687 A JP22709687 A JP 22709687A JP S6470777 A JPS6470777 A JP S6470777A
Authority
JP
Japan
Prior art keywords
component
fogging
bias voltage
photosensitive drum
drum
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
JP22709687A
Other languages
Japanese (ja)
Inventor
Yasumasa Otsuka
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 JP22709687A priority Critical patent/JPS6470777A/en
Publication of JPS6470777A publication Critical patent/JPS6470777A/en
Pending legal-status Critical Current

Links

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  • Developing For Electrophotography (AREA)

Abstract

PURPOSE:To prevent the occurrence of fogging on a photosensitive drum by executing a developing process to an electrostatic latent image with a developing means on which a bias voltage obtained by super-posing DC component on AC component is impressed and attenuating the AC component in a specified time constant when the bias voltage is off. CONSTITUTION:The electrostatic latent image formed on the photosensitive drum 6 is developed with the developing sleeve 2, etc., on which the bias voltage obtained by superposing the DC component on the AC component is impressed from a bias power source 12. When the A.C component is attenuated in time constant pi which satisfies fXtau>=3 with respect to AC component frequency (f) in case of making the AC component off, toner which moves reciprocally between the sleeve 2 and the drum 1 is gradually reduced and the toner which is left on the drum 1 to cause the fogging becomes a little. As a result, the occurrence of the fogging on the photosensitive drum can be prevented and a developed image without stain can be formed.
JP22709687A 1987-09-10 1987-09-10 Image forming device Pending JPS6470777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22709687A JPS6470777A (en) 1987-09-10 1987-09-10 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22709687A JPS6470777A (en) 1987-09-10 1987-09-10 Image forming device

Publications (1)

Publication Number Publication Date
JPS6470777A true JPS6470777A (en) 1989-03-16

Family

ID=16855428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22709687A Pending JPS6470777A (en) 1987-09-10 1987-09-10 Image forming device

Country Status (1)

Country Link
JP (1) JPS6470777A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553372A (en) * 1978-10-14 1980-04-18 Canon Inc Method and apparatus for electrophotographic development
JPS5614266A (en) * 1979-07-16 1981-02-12 Canon Inc Toner image forming method
JPS60249171A (en) * 1984-05-25 1985-12-09 Konishiroku Photo Ind Co Ltd Image forming method
JPS6136851B2 (en) * 1981-05-19 1986-08-20 Hitachi Chemical Co Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553372A (en) * 1978-10-14 1980-04-18 Canon Inc Method and apparatus for electrophotographic development
JPS5614266A (en) * 1979-07-16 1981-02-12 Canon Inc Toner image forming method
JPS6136851B2 (en) * 1981-05-19 1986-08-20 Hitachi Chemical Co Ltd
JPS60249171A (en) * 1984-05-25 1985-12-09 Konishiroku Photo Ind Co Ltd Image forming method

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