KR970028897A - Charge control method for preventing contamination of contact charger in electrophotographic image forming apparatus - Google Patents
Charge control method for preventing contamination of contact charger in electrophotographic image forming apparatus Download PDFInfo
- Publication number
- KR970028897A KR970028897A KR1019950042254A KR19950042254A KR970028897A KR 970028897 A KR970028897 A KR 970028897A KR 1019950042254 A KR1019950042254 A KR 1019950042254A KR 19950042254 A KR19950042254 A KR 19950042254A KR 970028897 A KR970028897 A KR 970028897A
- Authority
- KR
- South Korea
- Prior art keywords
- period
- photosensitive member
- developing means
- control method
- developer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
- G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
- G03G15/0225—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers provided with means for cleaning the charging member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0266—Arrangements for controlling the amount of charge
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
- G03G15/0907—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with bias voltage
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION
접촉대전방식을 채용한 전자사진 현상방식의 화상형성장치에 비정상 현상제에 의한 접촉대전기의 오염을 방지하기 위한 대전 제어방법이다.A charging control method for preventing contamination of a contact charger by an abnormal developer in an electrophotographic image forming apparatus employing a contact charging method.
2. 발명이 해결하고자 하는 기술적 과제2. Technical problem to be solved by the invention
미전사 또는 비산으로 인해 감광체상에 부착되어 있는 비정상 현상제에 의한 접촉대전기의 오염을 방지할 수 있는 대전 제어방법을 제공한다.Provided is a charging control method capable of preventing contamination of a contact charger by an abnormal developer attached to a photosensitive member due to untransfer or scattering.
3. 발명의 해결방법의 요지3. Summary of Solution to Invention
감광체가 회전하기 시작할때부터 적어도 1회전하는 제1기간동안 접촉대전기에 규정 레벨의 대전전압을 인가하고, 제1기간이후 감광체의 회전이 정지되기 전까지 미리 설정된 제2기간동안 대전전압을 차단하는 동시에 현상수단의 현상바이어스전압을 감광체상의 표면전위 이상의 레벨로 인가한다.The charging voltage of the prescribed level is applied to the contact charger for the first period of time at least one rotation from the time when the photosensitive member starts to rotate, and after the first period of time, the charging voltage is cut off for a second predetermined period before the rotation of the photosensitive member is stopped. The developing bias voltage of the developing means is applied at a level equal to or higher than the surface potential on the photosensitive member.
4. 발명의 중요한 용도4. Important uses of the invention
별도 청소장치를 사용치 않고 비정상 현상제를 제거하는데 이용한다.It is used to remove abnormal developer without using separate cleaning device.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도는 본 발명에 따른 대전 제어과정을 보인 타이밍도.2 is a timing diagram showing a charging control process according to the present invention.
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950042254A KR0160558B1 (en) | 1995-11-20 | 1995-11-20 | Control method for preventing pollution of contact charge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950042254A KR0160558B1 (en) | 1995-11-20 | 1995-11-20 | Control method for preventing pollution of contact charge |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970028897A true KR970028897A (en) | 1997-06-24 |
KR0160558B1 KR0160558B1 (en) | 1999-03-20 |
Family
ID=19434690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950042254A KR0160558B1 (en) | 1995-11-20 | 1995-11-20 | Control method for preventing pollution of contact charge |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0160558B1 (en) |
-
1995
- 1995-11-20 KR KR1019950042254A patent/KR0160558B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0160558B1 (en) | 1999-03-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |