KR910005111A - Automatic Document Density Detection Device - Google Patents

Automatic Document Density Detection Device Download PDF

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Publication number
KR910005111A
KR910005111A KR1019890012179A KR890012179A KR910005111A KR 910005111 A KR910005111 A KR 910005111A KR 1019890012179 A KR1019890012179 A KR 1019890012179A KR 890012179 A KR890012179 A KR 890012179A KR 910005111 A KR910005111 A KR 910005111A
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KR
South Korea
Prior art keywords
automatic document
document density
proximity sensor
receiving element
terminal
Prior art date
Application number
KR1019890012179A
Other languages
Korean (ko)
Other versions
KR920000821B1 (en
Inventor
김병한
Original Assignee
정몽헌
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.)
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Priority to KR1019890012179A priority Critical patent/KR920000821B1/en
Publication of KR910005111A publication Critical patent/KR910005111A/en
Application granted granted Critical
Publication of KR920000821B1 publication Critical patent/KR920000821B1/en

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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

내용 없음.No content.

Description

자동 원고 농도 감지 장치Automatic Document Density Detection Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 의한 원고농도 감지센서의 구조도.2 is a structural diagram of a document density sensor according to the present invention.

제3도는 본 발명의 전체 구성을 나타내는 회로도.3 is a circuit diagram showing the overall configuration of the present invention.

제4도는 본 발명을 적용한 복사기의 동작 순서도.4 is a flowchart illustrating the operation of the copier to which the present invention is applied.

Claims (5)

복사본의 화질향상을 위해 원고의 농도를 감지함에 있어서 압판의 가장자리에 부착된 영구자석(MG)과, 전원단에 연결되어 있으며 상기 영구자석의 원근 위치에 따라 OFF,ON 동작을 수행하는 근접센서수단(E)과, 상기 근접센서 수단에 연결되어 있고 발광용 소자 및 수광용 소자를 포함하는 포토 인터럽터 수단(A)과, 상기 포토인터럽터 수단의 수광용 소자의 출력단 및 상기 근접센서 수단에 연결되어 있고 상기 수광용 소자의 출력에 의해 비반전입력단자(+단자)로 입력되는 전압과 상기 근접센서 수단에 연결된 저항(R3) 및 접지에 연결된 저항(R4)에 의해 반전입력단자(-단자)로 입력되는 기준전압을 비교하여 출력하는 비교수단(C)으로 구성됨을 특징으로 하는 자동원고 농도 감지장치.Permanent magnet (MG) attached to the edge of the platen and the proximity sensor means connected to the power supply in order to detect the density of the original to improve the image quality of the copy and performs OFF, ON depending on the perspective position of the permanent magnet (E), a photo interrupter means (A) connected to the proximity sensor means and including a light emitting element and a light receiving element, and an output terminal of the light receiving element of the photo interrupter means and the proximity sensor means; Input to the inverting input terminal (-terminal) by the voltage inputted to the non-inverting input terminal (+ terminal) by the output of the light-receiving element, the resistor R3 connected to the proximity sensor means and the resistor R4 connected to ground. Automatic document density detection device, characterized in that consisting of the comparison means for comparing and outputting the reference voltage. 제1항에 있어서, 상기 근접센서수단(B, 제1도의 12)은 압판에 부착된 영구자석(MG)에 대응되는 위치의 본체 상부에 설치함을 특징으로 하는 자동원고 농도 감지장치.The apparatus of claim 1, wherein the proximity sensor means (B) of FIG. 1 is installed on an upper portion of the main body at a position corresponding to the permanent magnet (MG) attached to the platen. 제1항에 있어서, 상기 포토 인터럽트수단(A)을 포함하는 원고농도 감지센서(제1도의 11)는 블랭켓 접착면을 압판상의 화이트 보드에 접착시켜 그 전면이 평평하도록 내장함을 특징으로 하는 자동원고 농도 감지장치.The document concentration detection sensor (11 in FIG. 1) including the photo interrupt means (A) is attached to a white board on a platen so that the front surface thereof is flat. Automatic document density sensing device. 제1항 또는 제3항에 있어서, 상기 원고 농도 감지센서의 포토 인터럽터는 반사광이 충분히 입사될 수 있도록 센서 블랭켓을 이용하여 반사각(θ)만큼 높게 장착함을 특징으로 하는 자동원고 농도 감지장치.The automatic document density sensor according to claim 1 or 3, wherein the photo interrupter of the document density sensor is mounted as high as the angle of reflection (θ) using a sensor blanket so that the reflected light can be sufficiently incident. 제1항에 있어서, 상기 포토 인터럽터 수단(A)의 수광용 소자의 출력단은 조정 가능한 가변저항(VR)을 포함함을 특징으로 하는 자동원고 농도 감지 장치.2. The automatic document density sensing device according to claim 1, wherein the output terminal of the light receiving element of said photo interrupter means (A) comprises an adjustable variable resistor (VR). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890012179A 1989-08-26 1989-08-26 Automatic manuscript brightness sensing apparatus KR920000821B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890012179A KR920000821B1 (en) 1989-08-26 1989-08-26 Automatic manuscript brightness sensing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890012179A KR920000821B1 (en) 1989-08-26 1989-08-26 Automatic manuscript brightness sensing apparatus

Publications (2)

Publication Number Publication Date
KR910005111A true KR910005111A (en) 1991-03-30
KR920000821B1 KR920000821B1 (en) 1992-01-30

Family

ID=19289264

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890012179A KR920000821B1 (en) 1989-08-26 1989-08-26 Automatic manuscript brightness sensing apparatus

Country Status (1)

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KR (1) KR920000821B1 (en)

Also Published As

Publication number Publication date
KR920000821B1 (en) 1992-01-30

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