KR920004954B1 - Warning method for manuscript loss - Google Patents

Abstract

A copying operation is carried out as set, and the status of a opening/closing detection switch (SW) is checked. If the closing of a platen cover (5) is detected by the switch (SW), and if the closed state continues until the warning delay time has been elapsed, a buzzer (19) is activated to output an alarm. When the switch (SW) detects the opening of the platen cover (5), the buzzer is turned off, and the generation of the alarm is terminated. With the method, if the user does not take away the text paper until a certain time period is elapsed after the completion of the copying operation, an alarm is sounded, thereby preventing the loss of the text paper.

Description

Warning Method of Lost Documents

1 is a partial view of a platen portion of a general copier.

2 is a conventional circuit diagram.

3 is a circuit diagram for carrying out the present invention.

4 is an operational waveform diagram of each part of FIG.

5 is a flow chart of an alert function in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

11: keyboard 12: MPU

13: rom 14: ram

15 Inverter 16: Line Driver

17: buzzer drive unit 18: buffer

19: buzzer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable copying machine or a copying machine to which a light source is moved, and more particularly, to a document loss warning method capable of preventing the loss of an original.

In general, the copier places the original 4 to be copied on the platen glass 3 as shown in FIG. 1 and closes the platen cover 5 to press the original 4. . When the copy start button is pressed, the optical system 2 moves, and when the end point is reached, the first switch SW1, which is a switch for detecting the movement of the optical system 2, is turned on. However, as soon as the optical system 2 returns to the origin, the first switch SW1 is " off ". Conventionally, as shown in FIG. 2, the inverter 6 includes a first switch SW1 for detecting the reciprocation of the optical system 2 and a second switch SW2 for detecting the opening and closing of the platen cover 5. 7) is connected to the set terminal (S) and reset terminal (R) of the RS flip-flop (8). The output signal of the RS flip-flop 8 is connected to the output terminal Q and the ground of the RS flip-flop 8 in series with a resistor R3, a variable resistor VR1, and a capacitor C1. Compare. Then, the base terminal of the transistor Q11 is connected to the connection point of the variable resistor VR1 and the capacitor C1, and the butter 9 is connected to the emitter terminal of the transistor Q11 to operate the transistor Q11. Ring the buzzer (10) accordingly. An operation description of the configuration of FIG. 2 is as follows.

를 더한 시간만큼 동안에는 트랜지스터(Q11)를 "온"시키지 않도록 미리 가변저항(VR1)을 조정하여 설정한다. 그래서 광학계(2) 이동중 제 1 스위치(SW1)가 "온"/"오프"됨에 따라 RS 플립플롭(8)의 출력이 변화해도 설정된 시간인 왕복시간±

보다 초과하지 않는 한 트랜지스터(Q11)는 "온"되지 않아 버저(10)가 울리지 않는다.First, the optical system 2 of FIG. 1 moves, and then returns to the origin again for a predetermined time.

The variable resistor VR1 is adjusted and set in advance so as not to turn on the transistor Q11 for as long as? Thus, even if the output of the RS flip-flop 8 changes as the first switch SW1 is turned "on" or "off" during the movement of the optical system 2, the set time round trip time ±

Unless exceeded, transistor Q11 is not " on " so that buzzer 10 does not ring.

만큼의 시간이 지나도 플래튼 커버(5)가 열리지 않아 제 2 스위치(SW2)가 "온"되지 않으면, RS 플립플롭(8)은 리셋트 되지 않고 있는 상태이다. 이때 플래튼 커버(5)를 열면 제 2 스위치(SW2)가 "온"되어 RS 플립플롭(8)의 출력이 논리 "로우"가 되므로 트랜지스터(Q11)의 베이스단자의 전압이 떨어져 버저(10)가 "오프"된다.When the time for copying exceeds the set time, the voltage charged in the capacitor C1 is discharged to the base terminal of the transistor Q11, and the transistor Q11 is turned on. The transistor Q11 is " on " so that the logic " high " by the voltage division of the power supply voltage Vcc of the resistor R4 connected to the collector terminal of the transistor Q11 and the resistor R5 connected to the emitter terminal. The terminal voltage causes the buzzer 10 to ring through the buffer 9. After copying

If the platen cover 5 does not open even after a lapse of time, the RS flip-flop 8 is not reset unless the second switch SW2 is " on ". At this time, when the platen cover 5 is opened, the second switch SW2 is "on" so that the output of the RS flip-flop 8 becomes a logic "low", so that the voltage at the base terminal of the transistor Q11 drops and the buzzer 10 Is "off".

However, in the case of continuous copying by the conventional method as described above, the capacity of the variable resistor VR1 and the capacitor C1, which can cause a time delay, is limited, and the variable resistor VR1 is changed every time the number of copies is changed. There was an uncomfortable problem to adjust).

Therefore, an object of the present invention is to lose a document that can automatically notify the warning of the document protection even when the number of copies is different while preventing the loss of the document due to the user leaving the original by mistake after leaving the copy of the document in the copier. To provide a warning method.

Hereinafter, the present invention will be described in detail with reference to the drawings.

에 입력하여 버저제어신호(S)를 출력단자(PC)로 발생하는 MPU(Micro Processor Unit)(12)와, 상기 개폐감지스위치(SW)와 상기 MPU(12)의 인터럽트 단자

사이에 접속되는 인버터(15)와 상기 MPU(12)가 본 발명을 수행하기 위한 프로그램과 복사 매수에 따라 각각 설정된 경고 지연시간 데이타를 저장하는 롬(ROM : Read Only Memory)(13)과, 상기 MPU(12)의 동작중 발생하는 각종 데이타를 일시 저장하기 위한 램(RAM : Random Access Memory)(14)과, 상기 MPU(12)으 출력단자(PC)의 버저제어신호(S)를 인터페이싱(interfacing)하기 위한 저항(R8) 및 라인 드라이버(16)와, 경고음을 발생하기 위한 버저(19)와, 트랜지스터(Q1)와 저항(R9-R12)으로 구성되어 상기 라인 드라이버(16)의 출력신호에 따라 상기 버저(19)를 구동하기 위한 버저구동부(17)와, 상기 버저구동부(17)의 출력단자와 상기 버저(19) 사이에 접속되는 버퍼(18)로 구성된다.3 is a circuit diagram for performing the present invention, the keyboard 11 for generating key data according to the key operation, the opening and closing detection switch (SW) switched by the opening and closing of the platen cover 5, and the opening and closing detection A resistor R6 connected between one end of the switch SW and a power supply voltage Vcc, a resistor R7 connected between the other terminal of the open / close detection switch SW and ground, and the keyboard 11; Inputs key data from the input terminal PA and interrupts the signal according to the switching of the opening / closing detection switch SW.

The MPU (Micro Processor Unit) 12 and the interrupt switch of the open / close detection switch SW and the MPU 12 which are inputted to the terminal to generate a buzzer control signal S as an output terminal PC.

A ROM (Read Only Memory) 13 in which the inverter 15 connected between the inverter 15 and the MPU 12 stores warning delay time data respectively set according to a program for performing the present invention and the number of copies; Interfacing a random access memory (RAM) 14 for temporarily storing various data generated during operation of the MPU 12 and a buzzer control signal S of the output terminal PC to the MPU 12 ( a resistor R8 and line driver 16 for interfacing, a buzzer 19 for generating a beep sound, a transistor Q1 and resistors R9-R12, and an output signal of the line driver 16; As a result, a buzzer driver 17 for driving the buzzer 19 and a buffer 18 connected between the output terminal of the buzzer driver 17 and the buzzer 19 are provided.

The opening and closing detection switch SW of the configuration of FIG. 3 is the same as the second switch SW2 of FIGS. 1 and 2 described above.

의 입력파형이다.4 is an operation waveform diagram of each part of FIG. 3, and FIG. 4A shows a waveform when the buzzer 19 rings, and FIG. 4B shows a waveform when the buzzer 19 does not ring. Also, in FIGS. 4A and 4B, (a) is a waveform in which the MPU 12 reads the warning delay time data of the ROM 13 according to the number of copies of the keyboard 11. (B) is the output waveform according to the switching of the open / close detection switch (SW), (c) is the waveform of the non-control signal (S) output from the output terminal (PC) of the MPU 12, (d) is the line Output waveform of the driver 16, () is an interrupt terminal of the MPU 12.

Is the input waveform of.

5 is a flowchart showing the execution of the warning function of the MPU 12 according to the present invention. When the number of copies is set by checking whether the number of copies has been set, the first reading of the warning delay time data of the ROM 13 corresponding to the number of copies And a second step of judging whether the copy start button is pressed after performing the first step, and if the copy starts, copying the original and checking whether the copy is completed by the set number of copies; and If the number of copies has been copied, a third step of checking whether the open / close detection switch SW is in the "on" state, and in the third step, the open / close detection switch SW is in the "off" state and the read warning delay time is If the "off" state continues until the elapsed time, the output signal "high" through the output terminal (PC) "on" the buzzer 19, the fourth to continue to check the switching state of the open / close detection switch (SW) Process, A fifth process of turning off the buzzer 19 by outputting a "low" signal through the output terminal PC when the opening / closing detection switch SW is in an "on" state in the third and fourth processes; Is done.

Based on the above structure, it demonstrates in detail with reference to FIG. 1, FIG. 3, and FIG. 5 which attached this invention.

First, as shown in FIG. 1, the original 4 to be copied is placed on the platen glass 3, and the copying machine 1 copies the original 4 with the platen cover 5 closed. The time required for copying the number of copies arbitrarily set in the ROM 13 shown in the figure is added to a predetermined number of times, and the table is calculated and input at the time of programming.

For example, if it takes 10, 45, 80, or 150 seconds to continuously copy 1, 5, 10, or 20 copies, you can add an arbitrary amount of time, that is, a certain time after copying is completed. The added value is calculated in advance and entered into the ROM 13 table as warning delay time data.

If the user inputs the number of copies through the keyboard 11 before copying the originals in the above state, the MPU 12 causes the warning delay time data to be the total sum of the copy times corresponding to the number of copies plus a predetermined time. Read from the ROM 13. The key for setting the number of copies of the keyboard 11 is, for example, increased by five times. At this time, if the copy start button is pressed, the MPU 12 controls the copier to make a copy by the set number of copies, and enables the time check routine by an internal program.

Referring to the flowchart shown in FIG. 5, the MPU 12 checks whether the number of copies has been set in step (1A), and if it is not set, performs step (1A) again, and if set, performs step (2A). do. In step (2A), the warning delay time data corresponding to the number of copies, that is, the copy time + arbitrary time, is read from the ROM 13 at the time T1 as shown in (a) of FIGS. 4A and 4B (a). Perform step 3A).

에 "로우"의 신호가 인가된다. 이에 따라 MPU(12)는 인터럽트가 걸리고, 소저의 인터럽트루틴으로 들어가 (7A)단계에서 출력단자(PC)를 통해 제 4 도(b)의 (ㄷ)파형과 같이 버저제어신호(S)를 "로우"로 출력한다. 즉 개폐감지스위치(SW)가 "온"되면 저항(R6, R7)에 의해 전원전압(Vcc)이 분압된 전압이 인버터(15)를 통해 MPU(12)의 인터럽트 단자

에 인가되므로 인터럽트가 걸리게 된다. 상기 "로우"의 버저제어신호(S)는 라인 드라이버(16)을 통해 제 4 도 (b)의 (ㄹ)파형과 같이 되어 이 신호가 저항(R9, R10)을 통하여 트랜지스터(Q1)의 베이스단자로 인가된다. 이에 따라 상기 트랜지스터(Q1)가 "오프"됨으로써 버저(19)가 "오프"되어 울리지 않게 된다.In step (3A), if there is no copy start key input for copying, the step (3A) is performed again and if there is a copy start key input as the user presses the copy start button on the keyboard 11 (4A). Copy the original in the step. Next, check if the number of copies set in step (5A) has been copied. If not, continue copying the next original, and if copying is completed, perform step (6A). In the step (6A), it is checked whether the opening / closing detection switch SW is in the "on" state, and when the platen cover 5 is opened, the opening / closing detection switch is made at the time T3 as shown in the wave form (b) of FIG. When (SW) is " ON ", the interrupt terminal of the MPU 12 at the time T3 as shown by (ㅁ) in FIG. 4 (b).

Is applied to the signal "low". Accordingly, the MPU 12 is interrupted, enters the interrupt routine of the source, and outputs the buzzer control signal S through the output terminal PC in step (7A) as shown by the waveform (c) of FIG. Low ". That is, when the opening / closing detection switch SW is turned "on", a voltage obtained by dividing the power supply voltage Vcc by the resistors R6 and R7 is an interrupt terminal of the MPU 12 through the inverter 15.

Is interrupted. The " low " buzzer control signal S becomes the waveform (d) of FIG. 4B through the line driver 16 so that this signal is the base of the transistor Q1 through the resistors R9 and R10. It is applied to the terminal. As a result, the transistor Q1 is "off" so that the buzzer 19 is "off" and does not ring.

Here, if the platen cover 5 is not opened in the step (6A), if the opening and closing detection switch (SW) is "off" like the waveform (b) of Figure 4 (a) is performed (8A) . In step (8A), if the warning delay time, which is the value read from the ROM 13 in step (2A), is greater than the value of the time check routine, that is, the warning delay time has not yet reached. In step (6A) continues to check the state of the opening and closing detection switch (SW). In step (8A), if the warning delay time is smaller than the time check routine, that is, the warning delay time has passed, step (9A) is performed. In step (9A), the buzzer control signal S is output as "high" at the time point T2 at which the warning delay time has elapsed, as shown by the waveform (c) of FIG. 4 (a) through the output terminal PC. do. As a result, the output signal of the line driver 16 becomes " high " at the time T2, as shown by the waveform (d) of FIG. 4A, and the " high " signal " on " As a result, the power supply voltage Vcc is grounded through the resistors R11 and R12, so that a "high" signal is output from the emitter terminal of the transistor Q1 to "on" the buzzer 19 through the buffer 18. Therefore, the buzzer 19 rings to generate a warning sound to warn the user. Then, in step 10A, check the "on" state of the open / close detection switch SW, and if not "on", perform step (9A) again, and the platen cover 5 is opened by the user with ice. ) Is " on " state, the interrupt is interrupted to perform step (7A).

As described above, according to the present invention, if the original is not taken even after a certain time has passed by the user's mistake after copying the set number of copies, a buzzer sounds to warn the user that the original is lost or the original is leaked. There is an advantage to avoid.

Claims (1)

Open / close detection switch SW switched by opening and closing of keyboard 11, platen cover 5, MPU 12, ROM 13 for storing warning delay time data respectively set according to the number of copies; In the warning method of the original loss of the copy machine having a buzzer 19 for generating a warning sound under the control of the MPU 12, the warning delay time of the ROM 13 corresponding to the number of copies by the number of copies set A copying process of checking the switching state of the open / close detection switch SW after reading data and completing copying by the number of copies set by the copy start key input; and the open / close detection switch SW is operated by the platen during the copying process. When the closing state of the cover 5 is detected and the closing state continues until the read warning delay time elapses, the buzzer 19 is turned "on" to generate a warning sound and the switching of the opening / closing detection switch SW. Continue checking status When the opening and closing detection switch (SW) detects the opening of the platen cover 5 during the warning sound generation process, the copying process and the warning sound generation process, " off " Warning method for manuscript loss, characterized in that the alarm sound blocking process to block.

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