KR950006227B1 - Method for preventing exposure lamp from breaking in copier - Google Patents
Method for preventing exposure lamp from breaking in copier Download PDFInfo
- Publication number
- KR950006227B1 KR950006227B1 KR1019920004531A KR920004531A KR950006227B1 KR 950006227 B1 KR950006227 B1 KR 950006227B1 KR 1019920004531 A KR1019920004531 A KR 1019920004531A KR 920004531 A KR920004531 A KR 920004531A KR 950006227 B1 KR950006227 B1 KR 950006227B1
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- Prior art keywords
- exposure
- lamp
- exposure lamp
- copier
- automatic
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
제1도는 종래의 복사기의 일부개략도.1 is a partial schematic view of a conventional copier.
제2도는 종래 회로도.2 is a conventional circuit diagram.
제3도는 종래의 노광장치 노치 테이블도.3 is a view of a conventional exposure apparatus notch table.
제4도는 본 발명에 따른 노치 테이블도.4 is a notch table in accordance with the present invention.
제5도는 본 발명에 따른 흐름도.5 is a flow chart according to the present invention.
본 발명은 복사기의 노광램프 파괴 방지방법에 관한 것이다.The present invention relates to a method of preventing exposure lamp destruction of a copier.
종래 노광기능은 제1도에서와 같이 노광램프(5)가 온되면서 자동노광 스케닝시 원고(1)에서 반사된 빛이 자동노광 센서(7)로 들어오고, 제2도에서 자동노광 센서(7)의 검출값은 증폭기(20)에서 증폭되어 A/D변환기(21)에 입력된다. 상기 입력된 아날로그 값은 A/D변환기(21)에서 제3도예와 같이 256개의 디지탈값중 하나값으로 출력되어 마이콤(23)에 입력된다.In the conventional exposure function, as the exposure lamp 5 is turned on as shown in FIG. 1, the light reflected from the document 1 enters the automatic exposure sensor 7 during scanning of the automatic exposure, and the automatic exposure sensor 7 in FIG. ) Is amplified by the amplifier 20 and input to the A / D converter 21. The input analog value is output from the A / D converter 21 as one of 256 digital values as shown in FIG. 3 and input to the microcomputer 23.
이때 마이콤(23)은 입력된 값을 인식하여 256개 값을, 예를들어 7등분하여 입력된 값이 상기 7단계중 어느 단계에 속하는 값인가를 판단하여 그 값에 맞는 제어신호를 램프구동회로(205)에 보내어 상기 램프구동회로(203)에서 7단계의 광량(NOTCH1∼NOTCH7)중 한가지의 값으로 램프 광량을 결정하여 노광램프(5)을 온시키고 복사를 수행한다.At this time, the microcomputer 23 recognizes the input values and divides 256 values into 7 equal parts, for example, to determine which of the seven steps the input value belongs to and outputs a control signal suitable for the value. In step 205, the lamp driving circuit 203 determines the lamp light amount by one of the light levels NOTCH1 to NOTCH7 in seven stages to turn on the exposure lamp 5 and perform copying.
그러나 상기 램프구동회로(205)의 고장으로 노광램프(5)에 AC전원 입력이 곧바로 가해져 복사를 시작하면 스케닝 직전 약 2∼3초간 노광램프(5)가 밝게 켜지면서 노광램프(5)를 끊어지게 하는 문제점이 있었다.However, if the AC power input is immediately applied to the exposure lamp 5 due to a failure of the lamp driving circuit 205 and the copying starts, the exposure lamp 5 is turned on for about two to three seconds immediately before scanning, and the exposure lamp 5 is cut off. There was a problem.
따라서 본 발명의 목적은 복사기에 채용되어 있는 자동노광(AE)을 이용하되, 노광램프에 AC 입력이 곧바로 가해지는 순간 램프에서 발생하는 빛을 감지하여 순간적으로 복사기 구동을 멈추게 함으로서 노광램프의 파괴를 막을 수 있는 방법을 제공함에 있다.Therefore, an object of the present invention is to use the automatic exposure (AE) employed in the copier, but by detecting the light generated by the instantaneous AC input applied to the exposure lamp immediately stops the copier operation by destroying the exposure lamp To provide a way to prevent it.
상기 목적을 수행하기 위한 본 발명은 복사기의 노광램프 파괴방지 방법에 있어서, 자동노광 모드를 검출하고, 상기 자동노광 모드 검출여부에 따라 노광램프를 구동하며, 상기 노광램프의 구동에 따라 노광량을 감지하여 일정레벨에 도달했는가를 체킹하고, 상기 일정레벨 이상일때 노광램프의 구동을 차단하고 고장표시를 하고 상기 일정레벨 이하일때 복사 또는 자동노광 모드를 실행토록 구성되어 있음을 특징으로 한다.In accordance with an aspect of the present invention, a method of preventing exposure lamp destruction of a copying machine includes: detecting an automatic exposure mode, driving an exposure lamp according to whether the automatic exposure mode is detected, and detecting an exposure amount according to the driving of the exposure lamp; It checks whether a certain level has been reached, cuts off the driving of the exposure lamp when the level is above the predetermined level, displays a fault, and executes the copy or automatic exposure mode when the level is below the predetermined level.
이하 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제4도는 본 발명에 따른 A/D변환기에서 출력되는 자동노광 센서의 노광출력 테이블도로서, 제3도의 7단계에서 8단계로 하여 인식토록 구성되어 있다.4 is an exposure output table diagram of the automatic exposure sensor outputted from the A / D converter according to the present invention, and is configured to recognize from step 7 to step 8 of FIG.
제5도는 본 발명에 따른 흐름도로써, 복사기의 노광램프 파괴방지 방법에 있어 자동노광 모드를 검출하고, 상기 자동노광 모드 검출여부에 따라 노광램프를 구동하며, 상기 노광램프의 구동에 따라 노광량을 감지하여 일정레벨에 도달했는가를 체킹하고, 상기 일정레벨 이상일때 노광램프의 구동을 차단하고 고장표시를 하고 상기 일정레벨 이하일때 복사 또는 자동노광 모드를 실행토록 구성되어 있다.5 is a flowchart according to the present invention, which detects an automatic exposure mode in a method of preventing exposure lamp destruction of a copier, drives an exposure lamp according to whether the automatic exposure mode is detected, and detects an exposure amount according to the driving of the exposure lamp. It is configured to check whether a certain level has been reached, to cut off the driving of the exposure lamp when the level is above the predetermined level, to display a failure indication, and to execute the copy or automatic exposure mode when the level is below the predetermined level.
따라서 본 발명의 구체적 일실시예를 제2,4,5도를 참조하여 상세히 설명하면, 제2도의 마이콤(23)의 내부 저장장치에 제4도와 같이 노광감지양에 따라 복사기 동작을 중지시키기 위한 8단계의 인식 테이블을 두고, 자동노광 센서(7)의 노광램프(5)의 빛의 감지에 따라 램프구동회로(205)를 제어하면 노광램프(5)를 파괴로부터 보호하도록 되어 있다.Therefore, a specific embodiment of the present invention will be described in detail with reference to FIGS. 2, 4, and 5, and the following example is for stopping the copier operation according to the exposure detection amount in the internal storage device of the microcomputer 23 of FIG. With an eight-step recognition table, if the lamp drive circuit 205 is controlled in accordance with the detection of the light of the exposure lamp 5 of the automatic exposure sensor 7, the exposure lamp 5 is protected from destruction.
이를 위해 마이콤(23)은 제5도의 (7a)과정에서 자동노광 모드에 있는가를 체킹한다. 이를 체킹한 후 제5도의 (7b),(7i)과정에서 노광램프(5)를 온하도록 램프구동회로(205)를 제어한다.To this end, the microcomputer 23 checks whether it is in the auto exposure mode in step 7a of FIG. 5. After checking this, the lamp driving circuit 205 is controlled to turn on the exposure lamp 5 in steps 7b and 7i of FIG. 5.
상기 램프구동회로(205)의 제어에 따라 (7b),(7i)과정에서 노광램프(5)가 온되어지면 자동노광 센서(7)에서 광량을 감지하여 증폭기(20)에서 증폭시킨다. 이를 A/D변환기(21)에서 디지탈 데이타로 변환한 후 마이콤(23)으로 입력되어 제4도와 같이 노치 테이블과 비교되어진다. 즉 (7c),(7h)과정에서와 같이 상기 입력 감지값이 노치(Notch)가 "7"이상이 아닐때(7f)과정에서 복사를 수행하고(7g)과정에서 자동노광 모드를 실행한다.When the exposure lamp 5 is turned on in steps 7b and 7i under the control of the lamp driving circuit 205, the automatic exposure sensor 7 senses the amount of light and amplifies it in the amplifier 20. This is converted into digital data by the A / D converter 21 and input to the microcomputer 23 to be compared with the notch table as shown in FIG. That is, as in (7c) and (7h), when the input detection value is not more than "7" notch (7), the copy is performed in the process (7f) and the automatic exposure mode is executed in the process (7g).
상기(7c,7h)과정에서 노치 "7"이상일때 램프구동회로(205)를 제어하여(7d)과정에서 노광램프(5)의 구동을 위한 전원을 차단하여 노광램프(5)를 보호하고, 그리고 (7e)과정에서 고장표시 등을 명령하여 고장 상태를 알려 파괴방지를 위한 처리를 실행토록 되어있다.When the notch "7" or more in the process (7c, 7h) is controlled by the lamp driving circuit 205 (7d) to cut off the power for driving the exposure lamp 5 in the process to protect the exposure lamp (5), In step (7e), a fault indication or the like is issued to notify the fault state so as to execute the process for preventing the breakdown.
상술한 바와 같이 복사시작 때마다 자동노광 센서를 이용하여 노광램프 상태를 체크하므로 램프구동회로 고장으로 인해 발생되는 노광램프의 파괴를 미연에 방지할 수 있는 이점이 있다.As described above, since the exposure lamp is checked by using an automatic exposure sensor each time the copy is started, there is an advantage that the destruction of the exposure lamp caused by the failure of the lamp driving circuit can be prevented in advance.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920004531A KR950006227B1 (en) | 1992-03-19 | 1992-03-19 | Method for preventing exposure lamp from breaking in copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920004531A KR950006227B1 (en) | 1992-03-19 | 1992-03-19 | Method for preventing exposure lamp from breaking in copier |
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| Publication Number | Publication Date |
|---|---|
| KR930020238A KR930020238A (en) | 1993-10-19 |
| KR950006227B1 true KR950006227B1 (en) | 1995-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019920004531A KR950006227B1 (en) | 1992-03-19 | 1992-03-19 | Method for preventing exposure lamp from breaking in copier |
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| KR (1) | KR950006227B1 (en) |
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- 1992-03-19 KR KR1019920004531A patent/KR950006227B1/en not_active IP Right Cessation
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| KR930020238A (en) | 1993-10-19 |
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