JPS5821963A - Image forming system - Google Patents

Image forming system

Info

Publication number
JPS5821963A
JPS5821963A JP56119161A JP11916181A JPS5821963A JP S5821963 A JPS5821963 A JP S5821963A JP 56119161 A JP56119161 A JP 56119161A JP 11916181 A JP11916181 A JP 11916181A JP S5821963 A JPS5821963 A JP S5821963A
Authority
JP
Japan
Prior art keywords
image forming
main body
additional device
forming apparatus
signal
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56119161A
Other languages
Japanese (ja)
Inventor
Akira Suzuki
明 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56119161A priority Critical patent/JPS5821963A/en
Publication of JPS5821963A publication Critical patent/JPS5821963A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Facsimiles In General (AREA)

Abstract

PURPOSE:To ensure a proper progress of the image forming sequence, by performing the transfer of a signal between the main body of an image forming device and an additional device via a current loop using a photocoupler. CONSTITUTION:An additional device 200 is connected to the main body 100 of an image forming device, and a closed circuit 300 having a photocoupler is inserted between the body 100 and the device 200. The signals delivered from the body 100 and the device 200 are led to the circuit 300. The signal is transmitted between the body 100 and the device 200 via a current loop using a photocoupler within the circuit 300.

Description

【発明の詳細な説明】 本発明は、複写機等の画像形成装置本体と付加装置とを
接続して構成した画像形成システムに関し、特にマイク
ロコンピュータ等の制御部を有する付加装置と画像形成
装置本体との間における信号伝送の信頼性を向上させる
ようにしたものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming system configured by connecting an image forming apparatus main body such as a copying machine and an additional device, and particularly relates to an image forming system configured by connecting an image forming apparatus main body such as a copying machine and an additional device, and in particular an additional device having a control section such as a microcomputer and an image forming apparatus main body. This is designed to improve the reliability of signal transmission between the two.

自動原稿給送装置、ソータ等の付加装置と複写機等の画
像形成装置本体との間における信号は。
Signals between an additional device such as an automatic document feeder or a sorter and the main body of an image forming apparatus such as a copying machine.

従来1個々の信号毎に付加装置および複写機本体のパラ
レル入出力ポートを介して電圧レベルで直接受渡されて
おり、また各付加装置毎に独自の1pトコルを用いてい
る。しかしながら、特く複写機等の画像形成装置本体に
おいては高圧電源が複数存在すると共に1画像形成装置
本体と付加装置間では別個の電源系統を用いる場合が多
く、装置相互間で共通電位が得にくいといった間層点が
あった。更には、制御信号の授受を行うための通信線が
長くなると1周辺ノイズにより画像形成システムに鋏動
作が誘起されるといった惧れもあった。
Conventionally, each individual signal is directly transferred at a voltage level through the parallel input/output port of the additional device and the main body of the copying machine, and a unique 1P protocol is used for each additional device. However, especially in image forming apparatus bodies such as copying machines, there are multiple high-voltage power supplies, and separate power supply systems are often used between the image forming apparatus body and additional devices, making it difficult to obtain a common potential between the devices. There were some interlayer points. Furthermore, if the communication line for transmitting and receiving control signals becomes long, there is a fear that peripheral noise may induce a scissoring action in the image forming system.

本発明の目的は、かかる点に鑑みて、画像形成装置本体
と各付加装置相互間の通信をホトカプラを用いた電流ル
ープにより行うようになし、より信頼性の高い画像形成
りステAを提供することにある。
In view of the above, an object of the present invention is to provide a more reliable image forming system A by performing communication between the main body of the image forming apparatus and each additional device through a current loop using a photocoupler. There is a particular thing.

以下に1図面を参照して本発明の詳細な説明する。The invention will now be described in detail with reference to one drawing.

第1図は本発明を適用した複写装置の一例を示し、 1
00は複写機本体の制御部、 200は自動原稿給送装
置、ソータ等の付加装置の制御部であり。
FIG. 1 shows an example of a copying apparatus to which the present invention is applied. 1
00 is a control unit of the main body of the copying machine, and 200 is a control unit of additional devices such as an automatic document feeder and a sorter.

制御16/DOと同様に構成できる。制御部100にお
いて、 10/は各部の制御を行う中央演算飽゛理装置
(OPU )であり、ioλは複写装置のシーケンス制
御プログラム等を格納したリードオンリメモリ(ROM
 ) 、 103は複写装置の制御状Illを示すフラ
グの記憶、シーケンス制御プログラム等の作業領域とし
て使用するランダムアクセスメモリ(RAM)である。
It can be configured similarly to control 16/DO. In the control unit 100, 10/ is a central processing unit (OPU) that controls each part, and ioλ is a read-only memory (ROM) that stores sequence control programs for the copying machine.
), 103 is a random access memory (RAM) used to store a flag indicating the control status Ill of the copying machine and as a work area for a sequence control program and the like.

lO蓼およびioz“はそれぞれ入力ポートおよび出力
ボードであり、入カポ−) /Q4Aを介して複写機本
体側のセンサ等から供給される検知信号が、 CPU 
tOtに取込まれたりRAM lOJ内に格納させる。
IO and IOZ" are an input port and an output board, respectively, and a detection signal supplied from a sensor on the copying machine main body side via input port)/Q4A is sent to the CPU.
It is taken into tOt or stored in RAM lOJ.

また、出カポ−) 101からは複写機本体側の負荷側
に向けて制御信号等が出力される。106〜titはバ
スであり、上述の各部間における各種信号の転送はこれ
らバスto6〜/llを介して行、われる。また、 /
/コはバス//Jを介してバスtotに接続されている
調歩同期式直列データ制御装置であり、シリアル出力ボ
ード8oからはCPU 10/の制御の下に付加装置の
制御部200へ向けて各種制御信号が出力される。また
、シリアル入力ボート8量には付加装置からの各種信号
が入力される。
Further, from the output capacitor 101, control signals and the like are outputted to the load side of the main body of the copying machine. 106-tit are buses, and the transfer of various signals between the above-mentioned units is performed via these buses to6-/ll. Also, /
/ is an asynchronous serial data control device connected to the bus tot via the bus //J, and the serial output board 8o is directed to the control section 200 of the additional device under the control of the CPU 10/. Various control signals are output. Further, various signals from additional devices are input to the serial input port 8.

JOOは信号伝送装置であり、ここでTr/、Trコは
)Lり:’ジスタであり、各ベースに制mW6ioo。
JOO is a signal transmission device, where Tr/, Tr is a register, and each base has a control mW6ioo.

JOOから出力されるシリアル信号がそれぞれ導かれて
いる。トランジスタTr/の工よツタとコレクタとの間
には抵抗R11電源B’l’/および発光ダイオードL
ID/ @直列接続する。トランジスタTrコにおいて
も同様に構成する。また、 pT/ 、 pTコはホト
トランジスタであり1発光ダイオードLID/ 。
Serial signals output from JOO are respectively guided. A resistor R11, a power supply B'l'/ and a light emitting diode L are connected between the transistor Tr/'s terminal and the collector.
ID/ @Connect in series. The transistor Tr is also configured in a similar manner. In addition, pT/ and pT are phototransistors and one light emitting diode LID/.

LIDコと共にホトカブ9PO/、POコを構成する。Together with LID, it constitutes Hotokabu 9PO/, PO.

このように構成した複写装置においCは、出カポ−) 
8oから出力されたシリアル信号が、信号@ti4Aを
介して、トランジスタTr/のペースに入力される。ト
ランジスタ!rlはホトカフ 、) POt 。
In the copying machine configured in this way, C is the output port)
The serial signal output from 8o is input to the pace of transistor Tr/ via signal @ti4A. Transistor! rl is Hotocuff,) POt.

抵抗Ri 、電源B’f’/と直列接続されて閉回路が
構成されており、トランジスタTr/に入力されたシリ
アル信号によりこの回路に電PItループが誘起される
。従って、ホトカプラPO/の出力側、すなわちホトト
ランジスタPT/からは、出カポ−) 8゜から出力さ
れたシリアル信号に対応したシリアル信号が信号線ll
!を介して付加装置の制御部200に入力される。同様
に、付加装置の制御部200から出力されて信号gBi
ity介してトランジスタTrJ K導かれシリアル信
号に応動して、閉回路に電流ループが誘起される。これ
により、前述したと同様にして、ホトカプラPOコを構
成するホ)FうyジスタPTコおよび信号Ml //7
 ’i’介して入力ポート8Iにシリアル信号が供給さ
れる。
The resistor Ri and the power source B'f'/ are connected in series to form a closed circuit, and a serial signal input to the transistor Tr/ induces a voltage PIt loop in this circuit. Therefore, from the output side of the photocoupler PO/, that is, from the phototransistor PT/, a serial signal corresponding to the serial signal output from the output coupler PO/ is output from the signal line ll.
! The data is input to the control unit 200 of the additional device via. Similarly, a signal gBi is output from the control section 200 of the additional device.
A current loop is induced in the closed circuit in response to the serial signal led through the transistor TrJK. As a result, in the same manner as described above, the photocoupler PT and the signal ML which constitute the photocoupler PO are connected.
A serial signal is supplied to input port 8I via 'i'.

第1図は、このようにして転送されるシリアルデータの
構成形成の一例を示し、データtビットニ先立ってIビ
ット分のマーク区間を、データtビットの後には2ビッ
ト分のスペース区間を設けである。
FIG. 1 shows an example of the structure of serial data transferred in this way. A mark section for I bits is provided before the data t bit, and a space section for 2 bits is provided after the data t bit. be.

なお1本実施例におけるクリアルデータの転送に際して
は、同期クーツクを供給せず、受信側。
Note that when transmitting clear data in this embodiment, a synchronization signal is not supplied to the receiving side.

例えば付加装置側からのデータの転送にあっては複写機
本体の制御N100側に配設された内部クロックを計数
した値に基づき、付加装置側力・ら送給されるデータビ
ツシのタイミングを検出して〜する。
For example, when transferring data from the additional device side, the timing of data bits sent from the additional device side is detected based on the counted value of the internal clock provided on the control N100 side of the copying machine main body. I'm going to do it.

以上説明したように、本発明によれば、tm像形成装置
本体、付加装置間の信号の受渡しを、ホトカプラを用い
た電流ループにより行うようにしたので、従来のような
装置相互間で共通電位を得るための逃理が不必要となり
、更には周辺ノイズにより誤動作が誘起されやすいとい
った欠点を解消して、この種装置の画像形成シーケンス
の適正な進行を図ることが可能となる。
As explained above, according to the present invention, signals are exchanged between the main body of the TM image forming apparatus and the additional device using a current loop using a photocoupler, so that a common potential can be maintained between the devices unlike in the past. This eliminates the need for an escape to obtain the image quality, and also eliminates the drawbacks that malfunctions are likely to be induced by surrounding noise, thereby making it possible to properly proceed with the image forming sequence of this type of apparatus.

なお、上述の説明においては、シリアル転送をする場合
について述べてきたか、勿論これのみに限られるもので
はない。
Note that in the above description, the case where serial transfer is performed has been described, but of course the case is not limited to this.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明を適用した複写装置の構成の一例を示す
プルツク図、第λ図は同じくその複写装置において転送
されるシリアルデータの構成形式の一例を示す線間であ
る。 100・・−複写機本体の制御部。 10/・・・中央演算佑理装置(OPU) 。 10λ・・・リードオンリメモリ(ROM) &103
・−ランダムアクセスメモリ(RAM) 。 ioダ・・・入カポ−) 、    10!・・・出力
ボート。 iot〜///、 //J 1・・バス、//λ・・・
調歩同期式直列データ制御装置。 /lダ〜//7・・・信号線、  λ00・・・付加装
置の制御部。 JOO・・・信号伝送装置、    PO/、POコ・
・・ホトカプラ、?r/、Trコー・・トランジスタ。 R/、RJ・・・抵抗、     BT/、 BTコ・
・・電源。 Pert、 PT2・・・ホトトランジスタ。 LID/ 、 LIDコ・・・発光ダイオード。 特許出願人  キャノン株式会社
FIG. 1 is a pull diagram showing an example of the configuration of a copying machine to which the present invention is applied, and FIG. 1 is a line diagram showing an example of the format of serial data transferred in the copying machine. 100...-Control unit of the main body of the copying machine. 10/...Central processing unit (OPU). 10λ...Read only memory (ROM) &103
-Random Access Memory (RAM). io da... enter capo), 10! ...output boat. iot~///, //J 1...bus, //λ...
Asynchronous serial data control device. /lda~//7...Signal line, λ00...Control unit of additional device. JOO...Signal transmission device, PO/, PO co-
...Hotocoupler? r/, Tr Co...transistor. R/, RJ...resistance, BT/, BT co-
··power supply. Pert, PT2...phototransistor. LID/, LIDco...Light emitting diode. Patent applicant Canon Co., Ltd.

Claims (1)

【特許請求の範囲】 画像形成を行う画像形成装置本体に付加装置を接続して
構成した画像形成システムにおいて。 前記画像形成装置本体と前記付加装置との間にホトカプ
ラを有する閉回路を介挿して前記画像形成装置本体およ
び付加装置から出力される信号な尚該閉囲路に導くよう
になし、ttr記信号の入来により当該閉回路に生起さ
れる電流ループにより前記画像形成装置本体と前記付加
装置との間の信号伝送を行うようにしたことを特徴とす
る画像形成システム。
[Scope of Claim] An image forming system configured by connecting an additional device to an image forming apparatus main body that performs image formation. A closed circuit having a photocoupler is inserted between the image forming apparatus main body and the additional device so that signals output from the image forming apparatus main body and the additional device are guided to the closed circuit, and the ttr signal is An image forming system characterized in that signal transmission between the image forming apparatus main body and the additional device is performed by a current loop generated in the closed circuit due to the inflow of the image forming apparatus.
JP56119161A 1981-07-31 1981-07-31 Image forming system Pending JPS5821963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56119161A JPS5821963A (en) 1981-07-31 1981-07-31 Image forming system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56119161A JPS5821963A (en) 1981-07-31 1981-07-31 Image forming system

Publications (1)

Publication Number Publication Date
JPS5821963A true JPS5821963A (en) 1983-02-09

Family

ID=14754422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56119161A Pending JPS5821963A (en) 1981-07-31 1981-07-31 Image forming system

Country Status (1)

Country Link
JP (1) JPS5821963A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004108A1 (en) * 1983-04-09 1984-10-25 Kyowa Hakko Kogyo Kk Novel immunoglobulin-coding dna
JPS6054373A (en) * 1983-08-04 1985-03-28 バイエル・アクチエンゲゼルシヤフト Pyrimidine and manufacture
JPS62184447A (en) * 1986-02-10 1987-08-12 Konishiroku Photo Ind Co Ltd Image recorder having printer part and automatic developing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004108A1 (en) * 1983-04-09 1984-10-25 Kyowa Hakko Kogyo Kk Novel immunoglobulin-coding dna
JPS6054373A (en) * 1983-08-04 1985-03-28 バイエル・アクチエンゲゼルシヤフト Pyrimidine and manufacture
JPS62184447A (en) * 1986-02-10 1987-08-12 Konishiroku Photo Ind Co Ltd Image recorder having printer part and automatic developing device

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