KR960042448A - Print Processing Circuit When Printer is Powered Off - Google Patents

Print Processing Circuit When Printer is Powered Off Download PDF

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Publication number
KR960042448A
KR960042448A KR1019950011880A KR19950011880A KR960042448A KR 960042448 A KR960042448 A KR 960042448A KR 1019950011880 A KR1019950011880 A KR 1019950011880A KR 19950011880 A KR19950011880 A KR 19950011880A KR 960042448 A KR960042448 A KR 960042448A
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KR
South Korea
Prior art keywords
terminal
power
input
output
resistor
Prior art date
Application number
KR1019950011880A
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Korean (ko)
Other versions
KR0174119B1 (en
Inventor
신봉엽
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950011880A priority Critical patent/KR0174119B1/en
Publication of KR960042448A publication Critical patent/KR960042448A/en
Application granted granted Critical
Publication of KR0174119B1 publication Critical patent/KR0174119B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/102—Parallel operation of dc sources being switching converters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0002—Handling the output data
    • G06K2215/0005—Accepting output data; Preparing data for the controlling system
    • G06K2215/0017—Preparing data for the controlling system, e.g. status, memory data

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Power Sources (AREA)

Abstract

본 발명은 프린터에 공급되는 전원의 오프(OFF)시에 수행되는 프린터의 전원오프시 인쇄처리회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print processing circuit at power off of a printer which is performed at power off supplied to a printer.

본 발명은 전원스위치(SW)에 의해 전원오프 키입력이 있는 때에도 해당처리가 완료되어 출력단(P1)으로 전원오프신호가 출력된 후에 비로서 전원(VCC)이 오프되도록 하고, 출력단(P4)을 통해 스트로브신호가 입력되는 경우에는 전원스위치(SW)에 의해 전원(VCC)이 오프된 경우에도 다시 전원(VCC)을 공급하여 인쇄를 수행하고, 상기 스트로브신호가 종료되면 다시 전원(VCC)을 차단하는 회로 구성을 가진다.According to the present invention, even when there is a power-off key input by the power switch SW, after the corresponding processing is completed and the power-off signal is output to the output terminal P1, the power supply VCC is turned off as a result, and the output terminal P4 is turned off. When the strobe signal is input through the power switch SW, even when the power supply (VCC) is turned off, the power supply (VCC) is supplied again to perform printing, and when the strobe signal ends, the power supply (VCC) is cut off again. Has a circuit configuration.

따라서, 본 발명은 전원스위치의 오프명령이 입력되더라도 현재 필요한 해당처리를 모두 한 후에 전원이 오프되고, 또 전원이 오프된 경우에도 컴퓨터에서 출력을 요구하는 신호가 있을 경우에는 전원을 온시켜 인쇄를 수행할 수 있는 효과가 있다.Therefore, the present invention, even if the off command of the power switch is input, the power is turned off after performing all the necessary processing currently, and even when the power is turned off, if there is a signal requesting output from the computer, the power is turned on to print There is an effect that can be performed.

Description

프린터의 전원 오프시 인쇄처리회로Print Processing Circuit When Printer is Powered Off

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

제3도는 본 발명에 따른 프린터의 전원 오프시 인쇄처리 회로도의 일실시예, 제4도는 상기 제3도의 회로동작을 설명하기 위한 타이밍도이다.FIG. 3 is an embodiment of a print processing circuit diagram when the printer is powered off according to the present invention. FIG. 4 is a timing diagram for explaining the circuit operation of FIG.

Claims (2)

전원스위치(SW)와, 상기 전원스위치(SW)의 키입력에 의해 소정의 트리거신호를 발생하는 저항(R1) 및 캐패시터(C1)와, 노이즈제거용 트리거 버퍼(B1)와, 상기 전원스위치(SW)의 키입력에 의해 출력상태를 전환하는 플립플롭(FF1)과, 상기 플립플롭(FF1)의 출력상태에 의해 온·오프되어 전원(VCC)을 공급 또는 차단하는 스위치용 트랜지스터(Q1)를 포함하는 프린터의 전원오프시 인쇄처리회로에 있어서, 상기 플립플롭(FF1)의 출력(Q1)이 저장(R13) 및 저항(R14)을 통해 비반전단자에 인가되고, 반전단자에는 저항(R15)과 저장(R16)으로 분압되는 일정 기준전위가 인가되도록 한 비교기(COM3)와, 상기 비교기(COM3)의 출력이 저항(R18)을 거쳐 반전단자에 인가되고, 비반전단자에 저항(R19)과 저항(20)으로 분압되는 일정 기준 전위가 인가되는 비교기(COM4)와, 상기 비교기(COM4)의 출력이 바이어스용 저항(R21)(R22)을 통해 상기 전원스위치용 트랜지스터(Q1)에 연결되고, 아울러 저항(R17)을 통해 상기비교기(COM3)의 반전단자(-)로 피드백 연결한 것과, 입력단(D)에는 상기 플립플롭(FF1)의 출력이 버퍼(B1)를 통해 입력되고, 클럭단에 스트로브신호가 입력되며, 출력단(Q1)에는 중앙처리장치(CPU)의 입력단(P3)이 연결되고, 반전출력단(Q2)에 저항(R27)을 통해 컬렉터가 접지된 트랜지스터(Q4)가 연결되며, 클리어단(CLR)에는 상기 중앙처리장치(CPU)의 전원오프신호 출력단(P1)이 연결되는 플립플롭(FF2)과, 상기 전원오프신호 출력단(P1)이 버퍼(B4) 및 저항(R24)(R25)을 거쳐 랜지스터(Q3)의 베이스에 연결되고, 상기 트랜지스터(Q3)의 컬렉터단이 저항(R23)을 통해 상기 비교기(COM3)의 비반전단자에 연결되고, 상기 비교기(COM3) 비반전단자로 입력되는 신호가 버퍼(B3)를 통해 입력단(P2)으로 입력되도록 연결하고, 동시에 저항(R26)을 통해 상기 트랜지스터(Q4)의 에미터에 접속되며, 입력단(P4)에는 상기 스트로브신호가 입력되도록 구성되는 중앙처리장치(CPU)를 더 포함하여 된 것을 특징으로 하는 프린터의 전원오프시 인쇄처리회로.A power switch SW, a resistor R1 and a capacitor C1 for generating a predetermined trigger signal by a key input of the power switch SW, a noise canceling trigger buffer B1, and the power switch ( The flip-flop FF1 for switching the output state by the key input of SW and the switching transistor Q1 for turning on / off by the output state of the flip-flop FF1 to supply or cut off the power supply VCC. In a printing processing circuit when a power-off of a printer is included, the output Q1 of the flip-flop FF1 is applied to the non-inverting terminal through the storage R13 and the resistor R14, and the resistance R15 to the inverting terminal. The comparator COM3 is configured to apply a constant reference potential divided by the overstorage and storage R16, and the output of the comparator COM3 is applied to the inverting terminal through the resistor R18, and the resistor R19 and the non-inverting terminal. The comparator COM4 to which the constant reference potential divided by the resistor 20 is applied, and the output of the comparator COM4. The bias resistors R21 and R22 are connected to the power switch transistor Q1, and the resistor R17 is feedback-connected to the inverting terminal (-) of the comparator COM3 through the resistor R17, and the input terminal ( D), the output of the flip-flop FF1 is input through the buffer B1, the strobe signal is input to the clock terminal, the input terminal P3 of the CPU is connected to the output terminal Q1, A transistor Q4 having a collector grounded through a resistor R27 is connected to an inverting output terminal Q2, and a flip-flop connected to a power-off signal output terminal P1 of the CPU is connected to a clear terminal CLR. FF2 and the power-off signal output terminal P1 are connected to the base of the transistor Q3 via the buffer B4 and the resistors R24 and R25, and the collector terminal of the transistor Q3 is connected to the resistor ( A signal connected to the non-inverting terminal of the comparator COM3 through R23 and input to the non-inverting terminal of the comparator COM3 is buffer B 3 is connected to an input terminal P2 through a central processing unit, and is connected to an emitter of the transistor Q4 through a resistor R26, and to the input terminal P4 configured to input the strobe signal ( And a CPU), wherein the print processing circuit is turned off. 제1항에 있어서, 상기 중앙처리장치(CPU)는 전원스위치(SW)에 의해 전원오프 키입력이 있는 때에도 해당처리가 완료되어 출력단(P1)으로 전원오프신호가 출력된 후에 비로서 전원(VCC)이 오프되도록 하고, 출력단(P4)을 통해 스트로브신호가 입력되는 경우에는 전원스위치(SW)에 의해 전원(VCC)이 오프된 경우에도 다시전원(VCC)을 공급하여 인쇄를 수행하고, 상기 스트로브신호가 종료되면 다시 전원(VCC)을 차단하는 제어를 수행하는 것을 특징으로 하는 프린터의 전원오프시 인쇄처리회로.The power supply (VCC) of claim 1, wherein the central processing unit (CPU) is outputted after the corresponding processing is completed and the power-off signal is output to the output terminal (P1) even when a power-off key is input by the power switch (SW). ) Is turned off, and when the strobe signal is input through the output terminal P4, even when the power supply VCC is turned off by the power switch SW, the power supply VCC is supplied again to perform printing. And a control to cut off the power supply (VCC) again when the signal is terminated. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950011880A 1995-05-15 1995-05-15 Print Processing Circuit When Printer is Powered Off KR0174119B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950011880A KR0174119B1 (en) 1995-05-15 1995-05-15 Print Processing Circuit When Printer is Powered Off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950011880A KR0174119B1 (en) 1995-05-15 1995-05-15 Print Processing Circuit When Printer is Powered Off

Publications (2)

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KR960042448A true KR960042448A (en) 1996-12-21
KR0174119B1 KR0174119B1 (en) 1999-04-01

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