JPS58125545A - Sheet sensing device - Google Patents
Sheet sensing deviceInfo
- Publication number
- JPS58125545A JPS58125545A JP57007469A JP746982A JPS58125545A JP S58125545 A JPS58125545 A JP S58125545A JP 57007469 A JP57007469 A JP 57007469A JP 746982 A JP746982 A JP 746982A JP S58125545 A JPS58125545 A JP S58125545A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- paper
- detector
- sheets
- air
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
- B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
- B65H7/04—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to absence of articles, e.g. exhaustion of pile
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ファクシミリ、複写機等において、原稿、あ
るいは記録紙（以下、単に用紙と称する）の有無を検出
する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting the presence or absence of a document or recording paper (hereinafter simply referred to as paper) in a facsimile machine, a copying machine, or the like.
ファクシミリ、複写機等においては、用紙の有無を検出
するための検出器が配設されているが、この検出器とし
ては、次の方式のものが知られている。Facsimile machines, copying machines, and the like are equipped with a detector for detecting the presence or absence of paper, and the following types of detectors are known.
■マイクロスイッチ等、機械的な動作によるもの０
■光センサによるもの（用紙による反射光の有無で検出
する方式と、透過光の有無で検出する方式とがある）。■Mechanical operations such as microswitches 0 ■Optical sensors (there are two methods: one detects by the presence or absence of reflected light from the paper, and the other detects by the presence or absence of transmitted light).
しかるに、前記の、■の方式で用紙の有無を検出するに
は、紙の特性（すなわち、紙の状態（パンチ穴、破れ、
皺等）、種類、透明度、厚さ、色、＠ｔＱ ％ ）に一
定の制限を設けて、紙特有の不安定要素を排除し、その
範囲内で検出器の動作を保証している。However, in order to detect the presence or absence of paper using the above-mentioned method (■), it is necessary to
By setting certain limits on paper type (wrinkles, etc.), type, transparency, thickness, color, @tQ %), unstable factors peculiar to paper are eliminated and the operation of the detector is guaranteed within these limits.
したがって、実際の使用に際して、気温、湿度等環境の
変化が生じた場合、あるいは制限外の用紙を使った場合
に、検出動作に誤りを生じ、使用上不便を感じることが
多い。Therefore, during actual use, if there is a change in the environment such as temperature or humidity, or if paper outside the limits is used, errors often occur in the detection operation, causing inconvenience in use.
本発明は、斯かる事情に鑑みて、前記■、■とは別方式
の紙検出器を案出したものであり、その目的とする処は
、用紙の特性に然程左右されることなく、安定して、確
実に用紙を検出し得る紙検出器を提供する点にある。In view of such circumstances, the present invention has devised a paper detector of a different type from the above-mentioned methods (1) and (2). The object of the present invention is to provide a paper detector that can stably and reliably detect paper.
すなわち、本発明の紙検出器は、空気流を発生させる圧
力源と、圧力−電気変換器よりなる空気圧検出器と、前
記圧力源および空気圧検出器を相互に連絡する送風路よ
り構成され、前記送風路の一部に解放部を設け、同解放
部における紙の有無によって、前記空気圧検出器で検出
される空気圧が変化するようにしたことを特徴としてお
り、空気圧の変動によって、用紙の有無を検出するもの
であるから、用紙の特性差、環境変化に然程左右されな
い。That is, the paper detector of the present invention is composed of a pressure source that generates an air flow, an air pressure detector consisting of a pressure-electrical converter, and an air passage that interconnects the pressure source and the air pressure detector, and A release section is provided in a part of the air passage, and the air pressure detected by the air pressure detector changes depending on the presence or absence of paper in the release section, and the presence or absence of paper can be detected by fluctuations in air pressure. Since it is a detection method, it is not affected by differences in paper characteristics or environmental changes.
壽
また、複写機。本体内空冷用ファンを圧力源として空気
流を取り出すことができるため、製作コストは低廉であ
る。Hisashi also has a copy machine. The manufacturing cost is low because the airflow can be taken out using the internal cooling fan as a pressure source.
さらに、光センサのような、検出器の汚れによる誤動作
は、生じない。Furthermore, malfunctions due to dirt on the detector, such as with optical sensors, do not occur.
以下、本発明の一実施例を第１図に則して説明する。An embodiment of the present invention will be described below with reference to FIG.
紙検出器１は、送風機ｐと、検圧器Ｓを備え、前記送風
機Ｐに送風管２を介して接続された与圧ノズル３と・前
記検圧器Ｓに接続された受圧ノズル４とが、所定の間隔
（用紙５が無理なく挿通され得る間隔）を置いて、相°
対抗せられて構成されている。The paper detector 1 includes a blower p and a pressure detector S, and a pressurized nozzle 3 connected to the blower P via a blow pipe 2 and a pressure receiving nozzle 4 connected to the pressure detector S are arranged at a predetermined level. (an interval at which the paper 5 can be inserted easily) and
They are constructed in opposition to each other.
前記検凪器Ｓは、例えば圧電素子を使用した圧力−電気
変換器として構成されている。The calm detector S is configured as a pressure-electricity converter using a piezoelectric element, for example.
しかして、紙検出器１の動作中、第１図に示すように与
、受圧ノズル３．４間に用紙５が存在している場合、送
風機Ｐから吐出される空気流は、送風管２を通じ、与圧
ノズル３より放出されるが、用紙５に遮られて、受圧ノ
ズル４側には、同等影響が無い。During the operation of the paper detector 1, if the paper 5 is present between the pressure receiving nozzles 3 and 4 as shown in FIG. , is ejected from the pressure nozzle 3, but it is blocked by the paper 5 and does not have the same effect on the pressure receiving nozzle 4 side.
したがって、検圧器Ｓの感圧面は大気圧下に置かれ、そ
れに対応した圧力信号が所定の制御回路へ送られる。Therefore, the pressure sensitive surface of the pressure detector S is placed under atmospheric pressure, and a corresponding pressure signal is sent to a predetermined control circuit.
次の段階で、用紙５が、与、受圧ノズル３．４間より除
かれると、受圧ノズル４は、与圧ノズル３から放出され
る空気流を受け、検圧器Ｓの感圧面には、この空気流に
よる所定の風圧が加えられ、それに応じて前記圧力信号
が変化し、その信号変化によって装置の制御が行われる
。In the next step, when the paper 5 is removed from between the pressure nozzle 3.4, the pressure nozzle 4 receives the airflow emitted from the pressure nozzle 3, and the pressure sensitive surface of the pressure detector S receives this air flow. A predetermined wind pressure is applied by the air flow, and the pressure signal changes accordingly, and the device is controlled based on the signal change.
このように、本実施例では、空気圧の変化によって用紙
５の有無を検出しているため、用紙の種類・透明度、厚
さ、色、観等に左右されず、安定、確実な検出が可能で
ある。In this way, in this embodiment, the presence or absence of paper 5 is detected by changes in air pressure, so stable and reliable detection is possible regardless of paper type, transparency, thickness, color, appearance, etc. be.
なお前記実施例において、送風機Ｐとして複写機等本体
内空冷用ファンを併用することができ、また、エアポン
プを使用しても良い。前者を使用する場合、別途動力源
を付設する必要がないので、製作費は低廉である。In the above-mentioned embodiments, a fan for air cooling inside the main body of a copying machine or the like can be used as the blower P, or an air pump may also be used. When using the former, there is no need to provide a separate power source, so the manufacturing cost is low.
次に、本発明の他の実施例を、第２図および第３図に則
して説明する。Next, another embodiment of the present invention will be described with reference to FIGS. 2 and 3.
紙検出器１１は、送風機Ｐと、検圧器Ｓを備え、前記送
風機Ｐに接続された送風管１２の与圧口１３と、前記検
圧器Ｓの受圧口１４とが、検出子１６により連結されて
構成されている。The paper detector 11 includes an air blower P and a pressure detector S, and a pressurized port 13 of the air pipe 12 connected to the blower P and a pressure receiving port 14 of the pressure detector S are connected by a detector 16. It is composed of
この検出子１６は、管状体であり、その一部に開口１７
を有している。This detector 16 is a tubular body, and a part thereof has an opening 17.
have.
しかして、前記開口１７は、用紙１５の有無にょっ″て
、遮蔽、または開放されるようになされている（各々、
第２図、第３図参照）。Thus, the opening 17 is shielded or opened depending on the presence or absence of the paper 15 (respectively).
(See Figures 2 and 3).
したがって、前記第１図に示した実施例とは逆に、用紙
１５が存在する場合には、検圧器Ｓは、所定の風圧を受
け、用紙１５が除かれた時に前記風圧が低下し、その変
化が検出され、その信号変化によって装置の制御が行わ
れる。Therefore, contrary to the embodiment shown in FIG. Changes are detected and the signal changes are used to control the device.
以上本発明を図面に示された実施例について説明したが
、本発明はこのような実施例に限定されることなく、本
発明の精神を逸脱しない範囲内で必要に応じて適宜自由
に設計の改変を施しうるちのである。Although the present invention has been described above with reference to the embodiments shown in the drawings, the present invention is not limited to such embodiments, and can be freely designed as necessary without departing from the spirit of the present invention. It is Uruchino that has been modified.
第１図は本発明の一実施例に係る紙検出器の概念的説明
図、第２図は本発明の他の実施例に係る概念的説明図、
第３図は第２図とは別の動作状態を示す説明図である。
１・・・紙検出器、２・・・送風管、３・・・与圧ノズ
ル、４・・・受圧ノズル、５・・・用紙、
１１・・・紙検出器、１２・・・送風管、１３・・・与
圧口、１４・・・受圧口、１５・・・用紙、１６・・・
検出子、１７・・・開口、Ｐ・・・送風機、Ｓ・・・検
圧器。
代理人 弁理士 江 原 望
外１名FIG. 1 is a conceptual explanatory diagram of a paper detector according to one embodiment of the present invention, FIG. 2 is a conceptual explanatory diagram according to another embodiment of the present invention,
FIG. 3 is an explanatory diagram showing an operating state different from that in FIG. 2. DESCRIPTION OF SYMBOLS 1... Paper detector, 2... Air pipe, 3... Pressure nozzle, 4... Pressure receiving nozzle, 5... Paper, 11... Paper detector, 12... Air pipe , 13... Pressure port, 14... Pressure receiving port, 15... Paper, 16...
Detector, 17...Opening, P...Blower, S...Pressure detector. Agent: Patent attorney Nozomi Ehara (1 person)
Claims (1)
る空気圧検出器と、前記圧力源および空気圧検出器を相
互に連絡する送風路より構成され、前記送風路の一部に
解放部を設け、同解放部における紙の有無によって、前
記空気圧検出器で検出される空気圧が変化するようにし
たことを特徴とする紙検出器。It is composed of a pressure source that generates an air flow, an air pressure detector consisting of a pressure-electrical converter, and an air passage that interconnects the pressure source and the air pressure detector, and a part of the air passage is provided with an open part. . A paper detector, characterized in that the air pressure detected by the air pressure detector changes depending on the presence or absence of paper in the release section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57007469A JPS58125545A (en) | 1982-01-22 | 1982-01-22 | Sheet sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57007469A JPS58125545A (en) | 1982-01-22 | 1982-01-22 | Sheet sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58125545A true JPS58125545A (en) | 1983-07-26 |
Family
ID=11666651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57007469A Pending JPS58125545A (en) | 1982-01-22 | 1982-01-22 | Sheet sensing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310893A (en) * | 2001-04-13 | 2002-10-23 | Unitika Ltd | Rupture detecting method for plastic film |
-
1982
- 1982-01-22 JP JP57007469A patent/JPS58125545A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310893A (en) * | 2001-04-13 | 2002-10-23 | Unitika Ltd | Rupture detecting method for plastic film |
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