JPS6225207A - Paper thickness measuring method for recording paper - Google Patents
Paper thickness measuring method for recording paperInfo
- Publication number
- JPS6225207A JPS6225207A JP16404785A JP16404785A JPS6225207A JP S6225207 A JPS6225207 A JP S6225207A JP 16404785 A JP16404785 A JP 16404785A JP 16404785 A JP16404785 A JP 16404785A JP S6225207 A JPS6225207 A JP S6225207A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- thickness
- recording paper
- fed
- recording
- 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
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電子写真複写機等の電子写真装置における記録
紙の紙厚測定方法に関する。詳細には、給紙装置による
給紙中に′記録紙の紙厚を測定する記録紙の紙厚測定方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for measuring the paper thickness of recording paper in an electrophotographic apparatus such as an electrophotographic copying machine. In particular, the present invention relates to a method for measuring the thickness of recording paper while it is being fed by a paper feeding device.
（従来の技術）
電子写真装置例えば電子写真複写機において、複数種類
の記録紙を選択的に給紙することがしばしばであり、記
録紙の紙厚に応じて転写条件を設定する必要があること
から、前記記録紙の紙厚測定方法が一般に広く採用され
ている。(Prior Art) In electrophotographic devices such as electrophotographic copying machines, multiple types of recording paper are often selectively fed, and it is necessary to set transfer conditions according to the thickness of the recording paper. Therefore, the method for measuring the paper thickness of recording paper is generally widely adopted.
前記記録紙の紙厚測定方法は、特開昭５４−９６０４６
号公報２％開昭５７−６４２７０号公報等に記載されて
いるように、従来より種々の本のが開発されているが、
紙厚を適切に測定することが困難であったり、紙厚を適
切に測定するために給紙装置の給紙性能が低下したシあ
るいは給紙装置がコスト高になる等の問題点がある。The method for measuring the paper thickness of the recording paper is disclosed in Japanese Patent Application Laid-Open No. 54-96046.
Various books have been developed in the past, as described in Publication No. 2%, Publication No. 57-64270, etc.
There are problems such as it is difficult to appropriately measure the paper thickness, the paper feeding performance of the paper feeding device is degraded in order to properly measure the paper thickness, and the cost of the paper feeding device is increased.
例えば、前記特開昭５４−９６０４６号公報に記載され
た記録紙の紙厚測定方法は、絶縁性フィルムで被覆され
た導電性ローラからなる一対の給紙ローラを有する給紙
装置を用いるものであって、前記給紙ローラに抵抗を含
む定電圧電源を直列に接続することによって、記録紙が
給紙ローラ間に送り込まれた際に生じる給紙ローラ間の
静電容量の変化を抵抗の前後における電位差の変化とし
て検知して記録紙の紙厚を測定するものである。すなわ
ち、記録紙の誘電率に基いて紙厚を測定するものであっ
て適切に測定することができるものであるが、給紙ロー
ラを特殊なものとしなければならず、そのために給紙中
にスリップを生じ易く適切に給紙することが困難であり
、またコスト高であるという問題点がある。また、特開
昭５７−６４２７０号公報に記載された記録紙の紙厚測
定方法は剛性ローラからなる一対の給紙ローラを有する
給紙装置を用いるものであって、記録紙が給紙ローラ間
に送り込まれた際に生じる 前記給紙ローラ間の間隙の
変化量を間隙を透過する光量の変化量として検知し、あ
るいは給紙ローラの上下移動による変位量を検知するこ
とによって記録紙の紙厚を測定するものであるが、夫々
の変化量が微小であるため、給紙ローラの偏心量を取付
は誤差等の誤差の影響を受けて正確に測定し難く、また
前記誤差の影響を除去するためには給紙ローラの精度や
取付は精度等を高くする必要がある、等の問題点がある
０
以上のように、従来の記録紙の紙厚測定方法は、種々の
問題点があり実用上充分なものであるとはいい難い。For example, the method for measuring the thickness of recording paper described in JP-A-54-96046 uses a paper feeding device that has a pair of paper feeding rollers made of conductive rollers covered with an insulating film. By connecting a constant voltage power source including a resistor to the paper feed roller in series, the change in capacitance between the paper feed rollers that occurs when recording paper is fed between the paper feed rollers can be measured by connecting the resistor to the front and back. The paper thickness of the recording paper is measured by detecting the change in the potential difference between the two. In other words, the paper thickness is measured based on the dielectric constant of the recording paper, and can be measured appropriately, but the paper feed roller must be made special, so There are problems in that paper slips are likely to occur, it is difficult to feed paper appropriately, and the cost is high. Furthermore, the method for measuring the thickness of recording paper described in Japanese Patent Application Laid-Open No. 57-64270 uses a paper feeding device having a pair of paper feeding rollers consisting of rigid rollers, and the recording paper is placed between the paper feeding rollers. The paper thickness of the recording paper can be determined by detecting the amount of change in the gap between the paper feed rollers that occurs when the paper is fed into the paper as the amount of change in the amount of light transmitted through the gap, or by detecting the amount of displacement due to the vertical movement of the paper feed roller. However, since the amount of change in each is minute, it is difficult to accurately measure the amount of eccentricity of the paper feed roller due to the influence of errors such as mounting errors, and it is difficult to accurately measure the amount of eccentricity of the paper feed roller. In order to achieve this, there are problems such as the need to increase the precision of the paper feed roller and the precision of its installation.0 As mentioned above, the conventional paper thickness measurement method for recording paper has various problems and is not practical. It is difficult to say that it is sufficient.
（発明の目的）
本発明の目的は、前記従来の問題点を解消することであ
って、給紙装置としての給紙性能を低下させることなく
、給紙中に記録紙の紙厚を正確に測定することができる
記録紙の紙厚測定方法を提供することＫある。(Object of the Invention) An object of the present invention is to solve the above-mentioned conventional problems, and to accurately adjust the paper thickness of recording paper during paper feeding without reducing the paper feeding performance of the paper feeding device. It is an object of the present invention to provide a method for measuring the paper thickness of recording paper.
（発明の構成）
本発明は前記目的を達成すべく完成されたものであって
、その構成は、一対の給紙ローラを有する給紙装置によ
る給紙中に記録紙の紙厚を測定する記録紙の紙厚測定方
法において、給紙ローラをサーボモータで駆動し、かつ
記録紙が給紙ローラに進入する際に生じるサーボモータ
の速度変化を検知することによって、記録紙の紙厚を測
定するようにしたことを特徴とする記録紙の紙厚測定方
法、である。(Structure of the Invention) The present invention has been completed to achieve the above-mentioned object, and its structure is a recording method that measures the thickness of recording paper while it is being fed by a paper feeding device having a pair of paper feeding rollers. In the paper thickness measurement method, the paper thickness of the recording paper is measured by driving the paper feed roller with a servo motor and detecting the speed change of the servo motor that occurs when the recording paper enters the paper feed roller. This is a method for measuring the paper thickness of recording paper, characterized in that:
（実施例）
本発明の実施例を第１図および第２図に基いて説明する
。第１図は本発明の、方法を実施するために用いる給紙
装置の給紙ローラを説明する図、第２図は第１図の給紙
ローラを作動する制御装置を含み本発明の方法を実施す
るために用いる制御装置のブロック線図である。第１図
に示す給紙ローラ１は、上下方向に固定されかつ歯車列
５を介してサーボモータ６によって駆動される第１０−
ラ２と、第１０−ラ２を押圧するようにばね４で弾性的
に支持された第２０−ラ３とからなり第１および第２の
ローラ２，３間に記録紙を挾持して給紙するものである
。なお、各ローラは剛性ローラー弾性ローラ等のいずれ
であってもよい。第２図に示す制御装置は、速度設定部
７．比較弁別部８Ｔモモ−−駆動部９．モーター６、速
度検出部１０とからなるモーター６の回転速度を一定に
制御する第１制御系と、速度検出部１０と紙厚演算部１
１とからなる記録紙の紙厚を測定する第２制御系と、紙
厚演算部１１と転写装置の制御部１２とからなシ、測定
された紙厚に応じて転写装置１３の転写条件を制御する
第３制？Ｒ系とからなるものである。(Example) An example of the present invention will be described based on FIGS. 1 and 2. FIG. 1 is a diagram illustrating a paper feed roller of a paper feed device used to carry out the method of the present invention, and FIG. It is a block diagram of the control device used for implementation. The paper feed roller 1 shown in FIG.
The recording paper is fed by sandwiching the recording paper between the first and second rollers 2 and 3. It is a paper thing. Note that each roller may be either a rigid roller or an elastic roller. The control device shown in FIG. 2 includes a speed setting section 7. Comparison/discrimination section 8T momo--drive section 9. A first control system that controls the rotational speed of the motor 6 to be constant, which includes a motor 6 and a speed detection section 10; a speed detection section 10 and a paper thickness calculation section 1;
1, a second control system for measuring the paper thickness of the recording paper; a paper thickness calculation section 11; and a transfer device control section 12; Third system to control? It consists of R series.
第１図および第２図に示すものは前記のように構成され
ており、給紙中における記録紙の紙厚は次のように測定
される。記録紙が給紙装置の給紙カセット（図示せず）
から給紙され、給紙ローラ１の第１および第２のローラ
２．３間に送り込まれた際に、モータ６の回転速度すな
わち回転数が瞬間的に変化する。すなわち、給紙ローラ
１に負荷変動が生じていない場合には、モータ６は速度
設定部７に設定された設定回転数ＮＢで回転されている
が、記録紙が給紙ローラ１に送り込まれた場合には瞬間
的に負荷変動が生じて設定回転数Ｎ８よシも低い実回転
数Ｎ０で回転することになる。The apparatus shown in FIGS. 1 and 2 is constructed as described above, and the thickness of recording paper during paper feeding is measured as follows. The recording paper is placed in the paper feed cassette of the paper feed device (not shown)
When the paper is fed from the paper feed roller 1 and sent between the first and second rollers 2.3 of the paper feed roller 1, the rotation speed, that is, the number of rotations of the motor 6 changes instantaneously. That is, when there is no load fluctuation on the paper feed roller 1, the motor 6 is rotated at the set rotation speed NB set in the speed setting section 7, but when the recording paper is fed into the paper feed roller 1, In this case, a load fluctuation occurs instantaneously and the motor rotates at the actual rotation speed N0, which is lower than the set rotation speed N8.
モータ６の回転数は第１制？ＩＪ系によって一定になる
ように制御されており、前記のように実回転数Ｎ０に低
下すると、速度検出部ｌＯで実回転数Ｎ。Is the rotation speed of motor 6 the first rule? It is controlled to be constant by the IJ system, and when the actual rotational speed decreases to N0 as described above, the actual rotational speed N is detected by the speed detection unit IO.
Ｋ対応した信号ｅ０に変換され、該信号ｅ。と設定回転
数Ｎ８に対応した信号ｅ１１とを比較弁別部８によって
比較し、該比較結果である信号（ｅｓ−ｅｏ）がＯとな
るようにモータ駆動部９が作動される。したがって、モ
ータ６の回転数が記録紙を給紙ローラＩＫ送り込んだ際
に低下するとしても瞬間的であって、以後は設定回転数
ＮＢで回転されるため、記録紙は設定速度で給紙される
。一方、記録紙が給紙ローラ１に送り込まれた際にモー
タ６の回転数がＮｏに低下したことが速度検知部１０で
検知されると、実回転数Ｎｏに対応した信号ｅ。K is converted into a corresponding signal e0, and the signal e. and a signal e11 corresponding to the set rotational speed N8 are compared by the comparison/discrimination section 8, and the motor drive section 9 is operated so that the signal (es-eo) which is the comparison result becomes O. Therefore, even if the rotational speed of the motor 6 decreases when the recording paper is fed into the paper feed roller IK, it is instantaneous, and from then on the motor 6 rotates at the set rotational speed NB, so the recording paper is fed at the set speed. Ru. On the other hand, when the speed detection unit 10 detects that the rotation speed of the motor 6 has decreased to No when the recording paper is fed into the paper feed roller 1, a signal e corresponding to the actual rotation speed No. is generated.
が第２制御系を構成する紙厚演算部１１に出力され、記
録紙の紙厚が測定される。すなわち、紙厚演算部１１に
おいて各種の紙厚に対応した基準値が設定されておシ、
前記信号ｅ０と前記基準値とを比較し演算することによ
って給紙中の記録紙の紙厚が測定される。また、紙厚演
算部１１において演算された記録紙の紙厚に対応した信
号が転写装置の制御部１２に出力され、転写装置１３は
記録紙の紙厚に対応した転写条件、例えば放電用電源の
電流１に設定される。is output to the paper thickness calculating section 11 constituting the second control system, and the paper thickness of the recording paper is measured. That is, standard values corresponding to various paper thicknesses are set in the paper thickness calculation section 11.
By comparing and calculating the signal e0 with the reference value, the thickness of the recording paper being fed is measured. Further, a signal corresponding to the paper thickness of the recording paper calculated in the paper thickness calculation unit 11 is output to the control unit 12 of the transfer device, and the transfer device 13 is configured to perform transfer conditions corresponding to the paper thickness of the recording paper, such as a discharge power source. The current is set to 1.
本実施例は、以上のように、給紙ローラの駆動手段をサ
ーボモーターとし、該サーボモーターの制御装置からの
信号を利用して記録紙の紙厚を測定するようにしたもの
であるため、記録紙の紙厚を正確に測定することができ
る。また、給紙ローラが常に一定速度で回転されるもの
であるため、記録紙の給紙を確実に行うことができるも
のである。さらに、転写装置の転写Φ件を記録紙の紙厚
に応じて適切に設定することができるものである。As described above, in this embodiment, a servo motor is used as the drive means for the paper feed roller, and the thickness of the recording paper is measured using a signal from the control device of the servo motor. It is possible to accurately measure the thickness of recording paper. Furthermore, since the paper feed roller is always rotated at a constant speed, the recording paper can be fed reliably. Furthermore, the transfer parameters of the transfer device can be appropriately set according to the thickness of the recording paper.
なお、第２図において紙厚演算部１１からの信号を入力
し記録紙の紙厚を表示する表示手段を設けるとともに、
該表示手段の表示に従って転写装置の転写条件を設定す
るようにしてもよい。In addition, in FIG. 2, a display means for inputting a signal from the paper thickness calculating section 11 and displaying the paper thickness of the recording paper is provided, and
The transfer conditions of the transfer device may be set according to the display on the display means.
（発明の効果）
本発明の記録紙の紙厚測定方法は、実施例においても説
明したように、給紙装置の一対の給紙ローラをサーボモ
ーターで駆動し、記録紙が給紙ローラに進入する際に生
じるサーボモーターの速度変化を検知することによって
紙厚を測定するものであるため、従来のものと比較して
はるかに正確に記録紙の紙厚を測定することができる。(Effects of the Invention) As explained in the embodiments, the method for measuring the thickness of recording paper according to the present invention involves driving a pair of paper feed rollers of a paper feeder with a servo motor, and causing the recording paper to enter the paper feed rollers. Since the paper thickness is measured by detecting changes in the speed of the servo motor that occur when printing, it is possible to measure the paper thickness of recording paper much more accurately than conventional methods.
また、給紙ローラが常に一定速度に維持されるため、記
録紙を確実に給紙することができ、従来のもののような
問題点を生じろことがない。In addition, since the paper feed roller is always maintained at a constant speed, the recording paper can be fed reliably, and there are no problems encountered with conventional systems.
以上のように、本発明は前記構成によって前記目的を達
成することができた。As described above, the present invention was able to achieve the above object with the above configuration.
第１図は本発明の方法に用いる給紙装置゛の要部の説明
図・第２図は同じく制御装置のブロック線図である。
１・・・給紙ローラ、 ２・・・第１０−ラｔ３・
・・第２０−ラ、 ６・・・モーターｔ１０・・・
速度検出部、１１・・・紙厚演算部。
特許出願人 小西六写真工業株式会社１８１図FIG. 1 is an explanatory diagram of the main parts of a paper feeding device used in the method of the present invention, and FIG. 2 is a block diagram of the control device. 1... Paper feed roller, 2... 10th-rat t3.
...20th-ra, 6...Motor t10...
Speed detection section, 11...Paper thickness calculation section. Patent applicant Konishiroku Photo Industry Co., Ltd. Figure 181
Claims (1)
に記録紙の紙厚を測定する記録紙の紙厚測定方法におい
て、給紙ローラをサーボモータで駆動し、かつ記録紙が
給紙ローラに進入する際に生じるサーボモータの速度変
化を検知することによって、記録紙の紙厚を測定するよ
うにしたことを特徴とする記録紙の紙厚測定方法。(1) In a recording paper thickness measurement method in which the thickness of recording paper is measured while it is being fed by a paper feeding device that has a pair of paper feeding rollers, the paper feeding roller is driven by a servo motor, and the recording paper is A method for measuring the thickness of recording paper, characterized in that the thickness of the recording paper is measured by detecting a speed change of a servo motor that occurs when the paper enters a paper roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16404785A JPS6225207A (en) | 1985-07-26 | 1985-07-26 | Paper thickness measuring method for recording paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16404785A JPS6225207A (en) | 1985-07-26 | 1985-07-26 | Paper thickness measuring method for recording paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6225207A true JPS6225207A (en) | 1987-02-03 |
Family
ID=15785786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16404785A Pending JPS6225207A (en) | 1985-07-26 | 1985-07-26 | Paper thickness measuring method for recording paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6225207A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10345064A1 (en) * | 2003-09-26 | 2005-04-14 | Giesecke & Devrient Gmbh | Sheet material thickness measurement device, especially for measuring banknote thickness, has two rigidly mounted rollers, through which material passes, with one of rollers elastically deformed by material |
| DE102004030618A1 (en) * | 2004-06-24 | 2006-01-26 | Giesecke & Devrient Gmbh | Measuring device for measuring the thickness of sheet material like bank-notes has a multitrack thickness sensor with two opposing fixed shafts driven synchronously |
| DE102004045170A1 (en) * | 2004-09-17 | 2006-03-23 | Giesecke & Devrient Gmbh | Banknote thickness measuring method for banknote processing machine, involves summing forces measured at axle ends of one elastic roller, and determining thickness of banknotes and/or variation in thickness of banknotes from summed forces |
| CN108230546A (en) * | 2018-01-10 | 2018-06-29 | 深圳怡化电脑股份有限公司 | Thickness abnormity detection method, device, terminal device and the storage medium of bank note |
-
1985
- 1985-07-26 JP JP16404785A patent/JPS6225207A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10345064A1 (en) * | 2003-09-26 | 2005-04-14 | Giesecke & Devrient Gmbh | Sheet material thickness measurement device, especially for measuring banknote thickness, has two rigidly mounted rollers, through which material passes, with one of rollers elastically deformed by material |
| DE102004030618A1 (en) * | 2004-06-24 | 2006-01-26 | Giesecke & Devrient Gmbh | Measuring device for measuring the thickness of sheet material like bank-notes has a multitrack thickness sensor with two opposing fixed shafts driven synchronously |
| DE102004045170A1 (en) * | 2004-09-17 | 2006-03-23 | Giesecke & Devrient Gmbh | Banknote thickness measuring method for banknote processing machine, involves summing forces measured at axle ends of one elastic roller, and determining thickness of banknotes and/or variation in thickness of banknotes from summed forces |
| CN108230546A (en) * | 2018-01-10 | 2018-06-29 | 深圳怡化电脑股份有限公司 | Thickness abnormity detection method, device, terminal device and the storage medium of bank note |
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