KR950012168A - Image density correction method and apparatus for electrophotographic copying machine - Google Patents

Image density correction method and apparatus for electrophotographic copying machine Download PDF

Info

Publication number
KR950012168A
KR950012168A KR1019930021442A KR930021442A KR950012168A KR 950012168 A KR950012168 A KR 950012168A KR 1019930021442 A KR1019930021442 A KR 1019930021442A KR 930021442 A KR930021442 A KR 930021442A KR 950012168 A KR950012168 A KR 950012168A
Authority
KR
South Korea
Prior art keywords
photosensitive drum
correction
image density
value
routine
Prior art date
Application number
KR1019930021442A
Other languages
Korean (ko)
Other versions
KR960007227B1 (en
Inventor
송용일
Original Assignee
김주용
현대전자산업 주식회사
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 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019930021442A priority Critical patent/KR960007227B1/en
Publication of KR950012168A publication Critical patent/KR950012168A/en
Application granted granted Critical
Publication of KR960007227B1 publication Critical patent/KR960007227B1/en

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
    • G03G15/06—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
    • 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
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection

Abstract

본 발명은 제로그라피법(Xerography Method)을 이용하는 전자사진 복사기의 화상농고 보정방법 및 그 장치에 관한 것으로써, 특히 감광체드럼의 대전 코로나 전류치, 바이어스전압, 할로겐 광원의 광량 및 크리너 브레이드가 감광드럼의 사용매수에 따라 변화되도록 함과 동시에 감광드럼 교환시 원상복귀되도록 하고, 또 현상장치내의 디벨로퍼상의 토너용량을 검출하여 특정치를 자동으로 보정하여 주므로서 화상농도를 지속적으로 일정하게 유지시켜 줄 수 있어 제품의 신뢰도를 더욱더 향상시킬 수 있는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting image density of an electrophotographic copying machine using a Xerography Method and a device thereof, and in particular, to a charge corona current value of a photosensitive drum, a bias voltage, a light amount of a halogen light source, and a cleaner braid of a photosensitive drum. It can be changed according to the number of used and at the same time, it is returned to the original state when the photosensitive drum is replaced, and the toner capacity on the developer in the developing device can be detected and automatically corrected for a specific value so that the image density can be kept constant. The reliability of the can be further improved.

Description

전자사진 복사기의 화상농도 보정방법 및 그 장치Image density correction method and apparatus for electrophotographic copying machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명이 적용된 전자사진 복사기의 감광체드럼 주변 개략 구성도.1 is a schematic configuration diagram around a photosensitive drum of an electrophotographic photocopier to which the present invention is applied.

제2도는 본 발명 화상농도 보정장치의 회로도.2 is a circuit diagram of the image density correction device of the present invention.

제3도는 본 발명 방법을 설명하기 위한 플로우챠트.3 is a flowchart for explaining the method of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

5 : 감광드럼 7 : 코로나 대전기5: photosensitive drum 7: corona charger

8 : 크리너 브레이드 10 : 현상장치8: cleaner blade 10: developer

14 : 대전 코로나 전류측정장치 15 : 측정용 코어14: charging corona current measuring device 15: measuring core

16 : 비교용 코어 17,18 : 입력코일16: comparison core 17, 18: input coil

19 : 출력코일 20,21 : 전압조정용 가변저항19: output coil 20, 21: variable resistor for voltage adjustment

22 : 위상검파기 23 : 비교기22: phase detector 23: comparator

Claims (2)

기준치를 입력시키고 감광드럼(5)을 세팅시킨 후, 보정주기를 결정하고 보정량 수치를 입력시켜 ROM 및 CPU에 저장하는 과정으로 이루어진 기종별 감광드럼 세팅루틴(L1)과; 전원이 '온' 된 후 예열이 완료되면 감광드럼의 보정주기(X)를 검출하여 보정시기가 되지 않았으면 준비등을 점등시켜 주는 보정주기 검출루틴(L2)과; 상기에서 보정주기를 검출한 결과 현재의 감광드럼(5) 상태가 보정주기(X)이면 CPU로부터 소정의 보정수치를 입력받아 감광드럼의 대전 코노라 전류부와 바이어스전압부 및 크리닝 브레이드부를 상기의 보정수치로 일정값의 보정량(Y)이 될때까지 구동시키는 과정으로 이루어진 감광드럼 보정루틴(L3)과상기에서 감광드럼의 보정이 완료되면 소정의 보정량(Z)이 될때까지 현상장치(11)의 화상농도를 조정하는 화상농도 조정루틴(L4)과; 상기에서 화상농도의 조정이 완료되면 소정값의 보정량(A)이 될때까지 감광드럼(5)의 잔류토너를 제거하는 크리너 브레이드(8)의 압력을 조절하는 크리너 브레이드 조정루틴(L5)으로 이루어진 것을 특징으로 하는 전자사진 복사기의 화상농도 보정방법.A type of photosensitive drum setting routine (L1) consisting of a process of inputting a reference value and setting the photosensitive drum 5, determining a correction cycle, inputting a correction amount value, and storing it in the ROM and the CPU; A calibration cycle detection routine (L2) for detecting a calibration cycle (X) of the photosensitive drum when the preheating is completed after the power is turned on and turning on the ready lamp if the calibration timing is not reached; As a result of detecting the correction period, if the current state of the photosensitive drum 5 is the correction period X, a predetermined correction value is input from the CPU, and the charging conola current portion, the bias voltage portion, and the cleaning braid portion of the photosensitive drum are The photosensitive drum correction routine L3, which is a process of driving until the correction value Y is a constant value as a correction value, and when the photosensitive drum correction is completed, the development apparatus 11 until the predetermined correction amount Z is reached. An image density adjusting routine L4 for adjusting image density; When the adjustment of the image concentration is completed, it is made of a cleaner blade adjustment routine (L5) for adjusting the pressure of the cleaner blade (8) for removing the residual toner of the photosensitive drum (5) until the correction amount (A) of a predetermined value. An image density correction method of an electrophotographic copier. 감광드럼(5)의 저부에 반송벨트(1), 제전판(2) 및 전사 코로나 대전기(3)가 설치되고, 그 상부에서 소정거리 떨어진 위치에는 블랭크램프(6)가 설치되고, 상기 블랭크 램프(6)와 제전램프(10)가 설치되며, 상기 감광드럼(5)의 좌,우측에는 코로나 대전기(7), 크리너 브레이드(8), 분리조(9), 대전 코로나 전류측정장치(14), 현상장치(11) 및 마그네틱 로울러(12)가 설치된 통상의 전자사진 복사기에 있어서, 상기 코로나 대전기(7)의 저부에는 측정용 코어(15)와 자기적으로 폐회로를 이루는 비교용 코어(16)를 순차적으로 설치하고, 상기 측정용 및 비교용 코어(15,16)의 일측부에는 입력코일(17,18)을 서로 반대방향으로 권취하되, 일단부를 전원전압에 각각 공접한 상기 입력코일(17,18)의 타단부는 각각 전압조정용 가변저항(20,21)을 통해 전원전압의 타단부에 연결하며, 상기 측정용 및 비교용 코어(15,16)의 타측부에는 출력코일(19)을 동일방향으로 일체로 권취하여 그 양단부는 위상검파기(22)의 입력단자에 연결하고, 상기 측정용 및 비교용 코어(15,16)의 출력코일(19)에 유도되는 출력전압의 위상을 검파시켜 주는 위상검파기(22)의 출력단자는 일측단자에 기준전압(Vref)이 인가되고, 출력단자가 토너 공급모터의 연결된 비교기(23)의 타측입력단자에 연결하여서 된 것을 특징으로 하는 전자사진 복사기의 화상농도 보정장치.At the bottom of the photosensitive drum 5, a conveyance belt 1, an antistatic plate 2, and a transfer corona charger 3 are provided, and a blank lamp 6 is provided at a position away from the upper portion of the photosensitive drum 5, and the blank A lamp 6 and an antistatic lamp 10 are installed, and the left and right sides of the photosensitive drum 5 have a corona charger 7, a cleaner braid 8, a separation tank 9, and a charging corona current measuring device ( 14) In the conventional electrophotographic copying machine provided with the developing device 11 and the magnetic roller 12, a comparison core magnetically closed with the measuring core 15 at the bottom of the corona charger 7. (16) are sequentially installed, and one side of the measurement and comparison cores (15, 16) is wound around the input coils (17, 18) in opposite directions, the one end is in common with the power supply voltage, respectively The other ends of the coils 17 and 18 are connected to the other ends of the power supply voltage through the variable resistors 20 and 21 for voltage adjustment, respectively. The other side of the measuring and comparing cores 15 and 16 is integrally wound with the output coil 19 in the same direction, and both ends thereof are connected to the input terminal of the phase detector 22, and the measuring and comparing cores are The output terminal of the phase detector 22, which detects the phase of the output voltage induced in the output coil 19 of the (15, 16), is applied with a reference voltage Vref to one terminal, and the output terminal is connected to the toner supply motor. An image density correction apparatus for an electrophotographic copy machine, characterized in that it is connected to the other input terminal of (23). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930021442A 1993-10-15 1993-10-15 Method and apparatus for correcting image concentration KR960007227B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930021442A KR960007227B1 (en) 1993-10-15 1993-10-15 Method and apparatus for correcting image concentration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930021442A KR960007227B1 (en) 1993-10-15 1993-10-15 Method and apparatus for correcting image concentration

Publications (2)

Publication Number Publication Date
KR950012168A true KR950012168A (en) 1995-05-16
KR960007227B1 KR960007227B1 (en) 1996-05-29

Family

ID=19365917

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930021442A KR960007227B1 (en) 1993-10-15 1993-10-15 Method and apparatus for correcting image concentration

Country Status (1)

Country Link
KR (1) KR960007227B1 (en)

Also Published As

Publication number Publication date
KR960007227B1 (en) 1996-05-29

Similar Documents

Publication Publication Date Title
JP2738749B2 (en) Image forming device
JP2016057582A (en) Image forming apparatus
US4419010A (en) Method for controlling the toner concentration in an electrostatic copier
JPH0215070B2 (en)
KR950012168A (en) Image density correction method and apparatus for electrophotographic copying machine
JPS59136728A (en) Image forming device
JPS6129504B2 (en)
JPS624712B2 (en)
JP3319881B2 (en) Image forming device
JPS6129505B2 (en)
JPH07253691A (en) Picture compensating device for image forming device
JP2006119470A (en) Image forming apparatus
JPH0611929A (en) Method for stabilizing image
JPS6114671A (en) Electrophotographic copying device
JPS58132767A (en) Copying device
JP2005275119A (en) Image forming apparatus
JP2006243214A (en) Image forming apparatus
JPS6360389B2 (en)
JP2989214B2 (en) Image forming device
JPH0362269B2 (en)
JPH052358A (en) Image forming device
JPS61232475A (en) Automatic image density controller for copying machine
JPS6221171A (en) Electrophotographic device
JPH05181335A (en) Image forming device
JPS60131574A (en) Control method of image density

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20020417

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee