JPH02232707A - Control mechanism for electronic equipment - Google Patents
Control mechanism for electronic equipmentInfo
- Publication number
- JPH02232707A JPH02232707A JP1053509A JP5350989A JPH02232707A JP H02232707 A JPH02232707 A JP H02232707A JP 1053509 A JP1053509 A JP 1053509A JP 5350989 A JP5350989 A JP 5350989A JP H02232707 A JPH02232707 A JP H02232707A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- voltage
- cpu
- voltage control
- switches
- 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
Links
- 238000001514 detection method Methods 0.000 abstract description 17
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000003708 edge detection Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Control Or Security For Electrophotography (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【発明の詳細な説明】
（産業Ｌの利用分野）
本発明は電子機器の制御機構に関し、より詳細には電了
写貞複写機もしくはファクシミリ専の機器内部の状態を
検出し各部の状態を制１２ｌ１部に把握せしめる機能を
必要とする電子機器の制御機構に関する．
（従米技術）
近年，事務処理のＯＡ化にともない電子写真複写機及び
ファクシミリ装置等の各種電子機器が多用されている．
これら各種電子機器は機器内部の状態を内蔵したセンサ
ー等により検出し、該検出信号をｖ１御部に与えること
により状悪を把握しつつ作動しているや
例えば，電子写真複写機では第４図に示す如《ベーバー
エンド．トナーエンド或は紙づまり等の様々なチェック
機能を有しており．従来ｔ述した如き状態検出は３部に
光センサー，感圧センサー等の検出器を備え、該検出器
から夫々信号線を；Ｇｌ１御部であるＣＰＵに接続して
構成していたため検出器の数だけ検出回路及びＣＰＵ人
カポートが必要てあった．
し７かしながら、近年の各種電ｆ機器は小型化及び低価
格化の要求が高まり多数の検出回路を備えると小型化及
びコストダウンが困雅であるという問題点があった．
（発明の目的冫
本発明は上述した如き従来の問題点に鑑みなされたもの
であって、１本の信号線にて複数の状態検出を可能にす
ることにより信号線の簡略化及びコストダウンを図るこ
とを目的とする．（考案の構成）
この目的を達成するために本発明の電子機器の状態検出
回路はツェナーダイ才−ド等の電圧制御素子とスイッチ
とを直列に接続した回路部品を腹敗備え，該回路部品を
電源に対して並列に接続し．且つ前記回路部品内電圧制
御素子の作動電圧を夫々異ならしめるとともに、電子機
器の各部状態により前記回路部品のスイッチを開閉し．
該回路部品の端子電圧を検出することにより電子機器内
における複数の状態を１本の信号線にて把握するように
したことを特徴とする．
以下．図面に示した 実施例に基づいて本発明を詳細に
説明する．
第１図は本発明に侮る状態検出回路をレーザープリンタ
に応用した例である．
同図において符号ｌは給紙部であって，該給紙部１はプ
リント用紙２を収納する給紙トレイ３と，プリント用紙
の有無を検出するスイッチ４及び給紙ローラー５からな
り．該給紙ローラー５により送出されたプリント用紙２
は用紙の先端検出スイッチ６を作動させた後感光体ドラ
ムに同期してレジストローラー７により扶持搬送され画
像形成部８に送られる．該画像形成部８は感光体Ｆラム
９，該感光体ドラム９の表面を均一に帯電する帯電チャ
ージャー！０、感光体ドラム９上に潜像を形成する露光
ユニットＩＩ ． ｔＭ像にトナー１２を付着せしめ町
視像化する現像ユニットｊ３、転写チャージャー１４及
び不要トナーを回収するクリニングユニット１５等によ
り構成され，該画像形成部にはトナーの有無を検出する
トナー看検出器１６、廃トナータンク内のトナー量を検
出するスイッチ１７等が設けられている．
前記画像形成部を通過しトナーの転写を受けたプリント
用紙は次段の定着ユニット１８に搬送され該トナーを焼
き付けた後徘紙トレイ１９に搬出される．この際プリン
ト用紙の排出完了は前記定着ユニットｌ８の出口に設け
られた排出検出スイッチ２０によって検出される．
このように構成したレーザープリンタに於いて、前記各
種検出スイッチ４．６．１８．１７及び２０を第２図に
示すごとく電源ｖＣＣとアースＧＮＤ間に並列に接続し
たツェナーダイ才−ドのツエナー電圧をそれぞれ異なる
ように設定すると，例えばプリンタ用紙の無を検出し、
スイッチ４がＯＮするとＣＰＵのアナログ・デジタル変
換入力ボート（以下．Ａ／Ｄボートと記す）にはＶＺ＋
なる電圧が人力され２それにより議Ｃ Ｐ Ｕはスイッ
チ４がＯＮＬ，ていると判断する．
また、複数のスイッチが同時にＯＮＬ，た場合には本実
施例ではツェナー電圧ｖｚの低い電圧がＡ／Ｄボートに
印加されるため，低い電圧に設定した検出器のブライ才
リティを高く設定しておけば前記ＣＰＵは誤って判断す
ることはない．第３図は本発明において各種スイッチに
接続したツェナーダイ才−ドの電圧ｖｚをＶＺＩ＜ＶＺ
２＜ＶＺ３＜・・・＜ＶＺｎと設定した場合に、ＣＰＵ
が各種スイッチのＯＮ、ＯＦＦを検出するためのフロー
チャートである．
同図に示すごと＜ｃｐｕのＡ／Ｄ入カボートがＶＺＩの
場合スイッチＳＷＩがＯＮと判断し、スイッチＳＷｌ検
出処理を行ない．また、ＣＰＵのＡ／Ｄボート入力がＶ
Ｚｎの場合にはスイッチＳＷｎがＯＮと判断しスイッチ
Ｓ Ｗ ｎ検出処理を行なうものである．
従って，複数の検出器を備えている場合であっても１本
の信号線で十分でありまた！チップＣＰＵで機能するた
め信号線及び検出回路を簡略化することかでき小聖化及
び低コスト化を図ることができる．
（発明の効果）
以上のように本発明にあっては、従来複数の状態検出を
行なう場合に検出数分の信号線及びＣＰＩＪの入力ポー
トを必要としたものを１本の信号線及び１つのＡ／Ｄ人
カボートのみで構成することができるため，ケーブル配
線等設計が容易になるとともに小型化及び低コスト化を
図る上で優れた効果を発揮する．[Detailed Description of the Invention] (Field of Application for Industry L) The present invention relates to a control mechanism for electronic equipment, and more specifically, detects the internal state of an electronic copying machine or facsimile machine and controls the state of each part. 12lRelates to a control mechanism for electronic equipment that requires a function to be grasped by the first part. (U.S. technology) In recent years, various electronic devices such as electrophotographic copying machines and facsimile machines are being used frequently as office processing becomes more automated.
These various electronic devices detect the internal state of the device using a built-in sensor, etc., and send the detection signal to the v1 controller to determine whether the device is in bad condition or not. As shown in 《Bever end. It has various check functions such as toner end or paper jam. Conventionally, the state detection as described above was configured by having three detectors such as a light sensor and a pressure sensor, and connecting the signal lines from each detector to the CPU which is the Gl1 control part. A number of detection circuits and CPU ports were required. However, in recent years there has been an increasing demand for miniaturization and cost reduction of various electronic devices, and there has been a problem in that it is difficult to miniaturize and reduce costs if a large number of detection circuits are provided. (Objective of the Invention) The present invention has been devised in view of the above-mentioned conventional problems, and it simplifies the signal line and reduces costs by making it possible to detect multiple states with one signal line. (Structure of the invention) In order to achieve this object, the state detection circuit for electronic equipment of the present invention includes a circuit component in which a voltage control element such as a Zener diode and a switch are connected in series. In preparation for failure, the circuit components are connected in parallel to the power supply, and the operating voltages of the voltage control elements in the circuit components are made different, and the switches of the circuit components are opened and closed depending on the status of each part of the electronic device.
The present invention is characterized in that multiple states within the electronic device can be ascertained through a single signal line by detecting the terminal voltage of the circuit component. below. The present invention will be explained in detail based on the embodiment shown in the drawings. Figure 1 shows an example in which the state detection circuit of the present invention is applied to a laser printer. In the figure, reference numeral 1 denotes a paper feed section, and the paper feed section 1 consists of a paper feed tray 3 for storing print paper 2, a switch 4 for detecting the presence or absence of print paper, and a paper feed roller 5. Print paper 2 sent out by the paper feed roller 5
After activating the paper leading edge detection switch 6, the paper is supported and conveyed by the registration rollers 7 in synchronization with the photosensitive drum and sent to the image forming section 8. The image forming section 8 includes a photoreceptor F ram 9 and a charging charger that uniformly charges the surface of the photoreceptor drum 9! 0. Exposure unit II for forming a latent image on the photoreceptor drum 9. It is composed of a developing unit j3 that attaches toner 12 to the tM image and visualizes it, a transfer charger 14, a cleaning unit 15 that collects unnecessary toner, and the like, and the image forming section includes a toner detector that detects the presence or absence of toner. 16, a switch 17 for detecting the amount of toner in the waste toner tank is provided. The print paper that has passed through the image forming section and has received the toner transfer is conveyed to the next fixing unit 18, where the toner is burned, and then conveyed to the wandering paper tray 19. At this time, completion of ejection of the print paper is detected by an ejection detection switch 20 provided at the exit of the fixing unit l8. In the laser printer configured in this way, the various detection switches 4, 6, 18, 17 and 20 are connected in parallel between the power supply vCC and the earth GND as shown in FIG. If you set them differently, for example, it will detect the absence of printer paper,
When switch 4 is turned on, the analog/digital conversion input port (hereinafter referred to as A/D board) of the CPU receives VZ+.
A voltage of 2 is applied manually, and the CPU determines that switch 4 is ON. In addition, if multiple switches are ON at the same time, in this embodiment, a low Zener voltage vz is applied to the A/D board, so the brightness of the detector set to a low voltage is set high. If you do this, the CPU will not make a wrong decision. Figure 3 shows the voltage vz of the zener diode connected to various switches in the present invention.
When setting 2<VZ3<...<VZn, the CPU
is a flowchart for detecting ON/OFF of various switches. As shown in the figure, if the A/D input port of the CPU is VZI, it is determined that the switch SWI is ON, and the switch SW1 detection process is performed. Also, the A/D boat input of the CPU is V
In the case of Zn, it is determined that switch SWn is ON, and switch SWn detection processing is performed. Therefore, even if you have multiple detectors, one signal line is sufficient! Since it functions on a chip CPU, the signal line and detection circuit can be simplified, making it more compact and lowering costs. (Effects of the Invention) As described above, in the present invention, what conventionally required signal lines and CPIJ input ports for the number of detections when performing multiple state detection can be replaced with one signal line and one CPIJ input port. Since it can be configured with only an A/D caboose, it simplifies the design of cable wiring, etc., and has an excellent effect in reducing size and cost.
′？，１図は本発明をレーザープリンタに用いた実施例
を示す図、第２図は本発明の一実施例を示す図，第３図
は本発明のフローチャートをホす図、第４図は従来の内
部状態検出装置を示す図である。
１・・・給紙部．２・・・プリンタ用紙，＝３・・・給
紙トレイ，４・・・用紙有無検出スイッチ、５・・・給
紙ローラ、６・・・用紙先端部検出スイ・・ｌチ、７・
・・レジストローラ、８・・・画像形成部、９・・・感
光体ドラム、１０・・・帯電チャージャー、ＩＩ・・・
露光ユニット，１２・・・トナー、ｌ３・・・現像ユニ
ット、１４・・・転写チャージャー、１５・・・廃トナ
ータンク１６・・・トナー量検出器、１７・・・廃トナ
ータンクな検出器、Ｉ８・・・定着ユニット、１９・・
・徘紙トレイ、２０・・・排紙完Ｔ検出スイッチ′? , 1 is a diagram showing an embodiment in which the present invention is applied to a laser printer, FIG. 2 is a diagram showing an embodiment of the present invention, FIG. 3 is a diagram showing a flowchart of the present invention, and FIG. 4 is a diagram showing a conventional example. FIG. 2 is a diagram showing an internal state detection device of. 1...Paper feed section. 2...Printer paper, =3...Paper feed tray, 4...Paper presence/absence detection switch, 5...Paper feed roller, 6...Paper leading edge detection switch...l, 7...
... Registration roller, 8... Image forming section, 9... Photosensitive drum, 10... Charging charger, II...
Exposure unit, 12... Toner, l3... Developing unit, 14... Transfer charger, 15... Waste toner tank 16... Toner amount detector, 17... Waste toner tank detector, I8...Fusing unit, 19...
・Wandering paper tray, 20... Paper discharge complete T detection switch
Claims (1)
列に接続した回路部品を複数備え、該回路部品を電源に
対して並列に接続し、且つ前記回路部品内電圧制御素子
の作動電圧を夫々異ならしめるとともに、電子機器の各
部状態により前記回路部品のスイッチを開閉し、該回路
部品の端子電圧を検出することにより電子機器内におけ
る複数の状態を１本の信号線にて把握するようにしたこ
とを特徴とする電子機器の制御機構。A plurality of circuit components are provided in which a voltage control element such as a Zener diode and a switch are connected in series, the circuit components are connected in parallel to a power supply, and the operating voltages of the voltage control elements in the circuit components are made different, respectively. , the switch of the circuit component is opened and closed depending on the state of each part of the electronic device, and the terminal voltage of the circuit component is detected, thereby grasping multiple states within the electronic device using a single signal line. control mechanism for electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053509A JPH02232707A (en) | 1989-03-06 | 1989-03-06 | Control mechanism for electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053509A JPH02232707A (en) | 1989-03-06 | 1989-03-06 | Control mechanism for electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02232707A true JPH02232707A (en) | 1990-09-14 |
Family
ID=12944785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1053509A Pending JPH02232707A (en) | 1989-03-06 | 1989-03-06 | Control mechanism for electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02232707A (en) |
-
1989
- 1989-03-06 JP JP1053509A patent/JPH02232707A/en active Pending
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