JPH05269976A - Method for detecting register mark on transparent web - Google Patents
Method for detecting register mark on transparent webInfo
- Publication number
- JPH05269976A JPH05269976A JP4100618A JP10061892A JPH05269976A JP H05269976 A JPH05269976 A JP H05269976A JP 4100618 A JP4100618 A JP 4100618A JP 10061892 A JP10061892 A JP 10061892A JP H05269976 A JPH05269976 A JP H05269976A
- Authority
- JP
- Japan
- Prior art keywords
- register mark
- transparent
- light
- ink
- visible
- 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.)
- Granted
Links
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、透明ウェブ上に印刷
された透明インキ及び可視インキのいずれの見当マーク
をも検出することができる透明ウェブ上の見当マーク検
出方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a register mark detecting method on a transparent web capable of detecting register marks of both transparent ink and visible ink printed on the transparent web.
【０００２】[0002]
【従来の技術】印刷における見当合せの方法としては、
版毎に見当マークを印刷し、それらの見当マークの位置
関係を制御して行なう方法が普及している。したがっ
て、印刷された見当マークを正確に検出する必要がある
が、従来当初は相互の位置関係を目視により識別すると
いう方法が採られていた。ここで、見当マークには可視
インキで印刷されるもの（可視トンボ）と透明インキで
印刷されるもの（透明トンボ）がある。特に、透明トン
ボを目視で検出する場合には透明インキに蛍光剤を添加
し、紫外線ランプを使用して低速運転下で行なってい
た。2. Description of the Related Art As a registration method in printing,
A method of printing a register mark for each plate and controlling the positional relationship of these register marks is widely used. Therefore, it is necessary to accurately detect the printed register mark, but in the past, a method of visually identifying the mutual positional relationship was conventionally adopted. Here, the register marks include those printed with visible ink (visible registration marks) and those printed with transparent ink (transparent registration marks). In particular, in the case of visually detecting a transparent register mark, a fluorescent agent was added to the transparent ink, and the operation was performed at a low speed using an ultraviolet lamp.
【０００３】また、最近においては、トンボを光センサ
で検出して相互の位置を比較することにより印刷ずれを
補償する方法が普及している。ここで、可視トンボの場
合には可視光源により可視光を照射してその反射光の変
化をとらえることにより検出するという方法が採られて
おり、透明トンボの場合には、以下の２つの方法等があ
った。In recent years, a method of compensating for print misalignment by detecting register marks by an optical sensor and comparing their positions with each other has become widespread. Here, in the case of a visible register mark, a method of irradiating a visible light from a visible light source and detecting the change of the reflected light is adopted, and in the case of a transparent register mark, the following two methods are used. was there.
【０００４】すなわち、１つには特公平１−２７８５７
に記載されており、微量の蛍光増白剤を添加した透明イ
ンキを用いて印刷した見当マークに紫外線を照射し、ル
ミネッセンスを発光させて検出する方法であり、他方は
特開平１−２８３１４７に記載されており、透明インキ
に紫外線吸収物質を添加して印刷した見当マークに紫外
線を照射し、紫外線吸収による反射または透過光量の変
化から見当マークを検出する方法である。That is, one is Japanese Patent Publication No. 1-28575.
Which is described in Japanese Patent Application Laid-Open No. 1-283147, in which a register mark printed with a transparent ink containing a trace amount of a fluorescent whitening agent is irradiated with ultraviolet rays to cause luminescence to be detected. This is a method in which a register mark printed by adding an ultraviolet absorbing substance to transparent ink is irradiated with ultraviolet rays, and the register mark is detected from the change in the amount of reflected or transmitted light due to the absorption of ultraviolet rays.
【０００５】[0005]
【発明が解決しようとする課題】ところで、目視で検出
する方法の煩雑さを解消するために上述のような光源及
びセンサによる自動化の方法が開発されたのであるが、
可視トンボの場合と透明トンボの場合とでそれぞれ専用
の装置を構成していたため双方が必要な場合には共用し
なければならず、汎用性に乏しいという問題点があっ
た。By the way, in order to eliminate the complexity of the visual detection method, the above-mentioned automation method using a light source and a sensor has been developed.
Since there are dedicated devices for the visible registration mark and the transparent registration mark, they must be shared when both are necessary, and there is a problem that they are not versatile.
【０００６】この発明は上述のような事情から成された
ものであり、この発明の目的は、透明ウェブであれば可
視トンボ及び透明トンボのいずれをも検出することが可
能な透明ウェブ上の見当マーク検出方法を提供すること
にある。The present invention has been made under the circumstances as described above, and an object of the present invention is to provide a register on a transparent web capable of detecting both a visible register mark and a transparent register mark in a transparent web. It is to provide a mark detection method.
【０００７】[0007]
【課題を解決するための手段】この発明は、透明ウェブ
上に印刷された透明インキ及び可視インキのいずれの見
当マークをも検出することができる透明ウェブ上の見当
マーク検出方法に関するものであり、この発明の上記目
的は、搬送される透明ウェブに紫外線から可視光までを
含む光を照射して前記透明ウェブを透過した光を受光す
ることにより監視し、受光した光の波長分布における各
波長領域の受光強度の減衰により透明インキで印刷され
た見当マークと可視インキで印刷された見当マークのい
ずれをも検出することによって達成される。SUMMARY OF THE INVENTION The present invention relates to a register mark detection method on a transparent web capable of detecting register marks of both transparent ink and visible ink printed on the transparent web, The above object of the present invention is to monitor the conveyed transparent web by irradiating the transparent web with light including ultraviolet rays to visible light and receiving the light transmitted through the transparent web, and each wavelength region in the wavelength distribution of the received light. This is achieved by detecting both the register mark printed with the transparent ink and the register mark printed with the visible ink due to the attenuation of the received light intensity.
【０００８】[0008]
【作用】この発明にあっては、搬送される透明ウェブに
紫外線から可視光までを含む光を照射し、その照射光が
透明ウェブを透過して受光された透過光の波長分布にお
いて、紫外線領域から可視領域の全領域で減衰した場合
は有色の不透過インキによる見当マーク、可視領域のみ
で減衰した場合は有色の透過性インキによる見当マー
ク、紫外線領域のみで減衰した場合は紫外線吸収剤入り
透明インキによる見当マークが検出されたとそれぞれ判
断できる。According to the present invention, the transparent web to be conveyed is irradiated with light including ultraviolet rays to visible light, and the irradiation light transmits through the transparent web and is received in the wavelength distribution of transmitted light. To the register mark with colored opaque ink when attenuated in all visible regions, the register mark with colored transparent ink when attenuated only in the visible region, and transparent with UV absorber when attenuated only in the ultraviolet region It can be judged that the register mark by the ink is detected.
【０００９】[0009]
【実施例】以下、図面に基づいてこの発明の実施例につ
いて詳細に説明する。図１（Ａ）及び（Ｂ）は、この発
明の透明ウェブ上の見当マーク検出方法を実現するため
の構成をそれぞれ示す図である。また、図２は光源１
（例えば、Ｅｌｅｖａｍ社製ＢＬＥ−１）の波長分布を
示す図であり、図３はセンサ２（例えば、浜松フォトニ
クス社製Ｇ１９６２）の分光感度特性を示す図である。Embodiments of the present invention will be described in detail below with reference to the drawings. 1 (A) and 1 (B) are diagrams showing a configuration for realizing a method of detecting a register mark on a transparent web according to the present invention. In addition, FIG. 2 shows a light source 1.
It is a figure which shows the wavelength distribution of (for example, BLE-1 by Elevam), and FIG. 3 is a figure which shows the spectral sensitivity characteristic of the sensor 2 (for example, G1962 by Hamamatsu Photonics KK).
【００１０】光源１とセンサ２の配置の態様としては、
一つには図１（Ａ）に示すように透明ウェブ３に対して
斜めに照射されるように光源１を配置し、透明ウェブ３
を透過して反射板５で反射した光を受光できる位置にセ
ンサ２を配置するものがある。他には図１（Ｂ）に示す
ように光源１を透明ウェブ３に対して一方の側に位置さ
せ、センサ２を光源１からの透過光を受光できるように
透明ウェブ３の他方の側に位置させるものがある。The arrangement of the light source 1 and the sensor 2 is as follows.
First, as shown in FIG. 1A, the light source 1 is arranged so that the transparent web 3 is obliquely irradiated.
There is one in which the sensor 2 is arranged at a position where it can receive the light that has passed through and reflected by the reflection plate 5. Alternatively, as shown in FIG. 1 (B), the light source 1 is positioned on one side of the transparent web 3, and the sensor 2 is placed on the other side of the transparent web 3 so that the transmitted light from the light source 1 can be received. There is something to position.
【００１１】そこで、図１（Ａ）に示す場合、光源１か
らの光は透明ウェブ３を透過し、反対側に接して備えら
れている反射板５に反射し、再び透明ウェブ３を透過し
てセンサ２により受光される。尚、このとき透明ウェブ
３上に見当マーク４があればそれによりセンサ２による
受光が影響される。また、図１（Ｂ）に示す場合、光源
１からの光は透明ウェブ３を透過し、その透過光はセン
サ２により受光される。この場合も同様に見当マーク４
があればそれにより影響される。したがって、基本的に
はセンサ２による受光を分析すれば、見当マーク４を認
識できることになる。Therefore, in the case shown in FIG. 1A, the light from the light source 1 is transmitted through the transparent web 3, reflected by the reflection plate 5 provided in contact with the opposite side, and transmitted through the transparent web 3 again. The light is received by the sensor 2. At this time, if the register mark 4 is present on the transparent web 3, the light reception by the sensor 2 is affected thereby. Further, in the case shown in FIG. 1B, the light from the light source 1 is transmitted through the transparent web 3, and the transmitted light is received by the sensor 2. In this case also, register mark 4
If there is, it will be affected by it. Therefore, basically, if the light received by the sensor 2 is analyzed, the register mark 4 can be recognized.
【００１２】次に、見当マーク４は可視トンボでも透明
トンボでもよいことを示す。ここで、光源１の波長分布
は図２に示すように紫外線領域から可視領域まで広がっ
ており、またセンサ２の分光感度特性も紫外線領域から
可視領域までの幅がある。そこで、先ず見当マーク４は
有色の不透過インキによるトンボであると想定する。有
色の不透過インキの場合には基本的には紫外線光も可視
光も透過しないのでセンサ２により受光された光の波長
分布は図４に示すようになる。したがって、逆に図４に
示すような波長分布で光が検出された場合には有色の不
透過インキによるトンボが検出されたことになる。次
に、見当マーク４は有色の透過性インキによるトンボで
あると想定する。有色の透過性インキの場合には可視光
の一部が減衰し紫外線光は透過するのでセンサ２により
受光された光の波長分布は図５に示すようになる。した
がって、逆に図５に示すような波長分布で光が検出され
た場合には有色の透過性インキによるトンボが検出され
たことになる。更に、見当マーク４はＵＶ（紫外線）吸
収剤入り透明インキによるトンボであると想定する。Ｕ
Ｖ吸収剤入り透明インキの場合には、可視光は透過する
ものの紫外線光は吸収剤に吸収されて透過しないのでセ
ンサ２により受光された光の波長分布は図６に示すよう
になる。したがって、逆に図６に示すような波長分布で
光が検出された場合にはＵＶ吸収剤入り透明インキによ
るトンボが検出されたことになる。Next, the register mark 4 may be a visible register mark or a transparent register mark. Here, the wavelength distribution of the light source 1 extends from the ultraviolet region to the visible region as shown in FIG. 2, and the spectral sensitivity characteristic of the sensor 2 also has a range from the ultraviolet region to the visible region. Therefore, first, it is assumed that the register mark 4 is a register mark made of a color impermeable ink. In the case of colored opaque ink, basically neither ultraviolet light nor visible light is transmitted, so the wavelength distribution of the light received by the sensor 2 is as shown in FIG. Therefore, conversely, when the light is detected with the wavelength distribution as shown in FIG. 4, it means that the registration mark due to the color opaque ink is detected. Next, it is assumed that the register mark 4 is a register mark made of a colored transparent ink. In the case of a colored transparent ink, part of visible light is attenuated and ultraviolet light is transmitted, so that the wavelength distribution of the light received by the sensor 2 is as shown in FIG. Therefore, conversely, when light is detected with the wavelength distribution as shown in FIG. 5, it means that the register mark due to the colored transparent ink is detected. Furthermore, it is assumed that the register mark 4 is a register mark made of a transparent ink containing a UV (ultraviolet) absorber. U
In the case of a transparent ink containing a V absorber, visible light is transmitted, but ultraviolet light is absorbed by the absorber and does not pass therethrough. Therefore, the wavelength distribution of the light received by the sensor 2 is as shown in FIG. Therefore, conversely, when light is detected with the wavelength distribution as shown in FIG. 6, it means that the registration mark due to the transparent ink containing the UV absorber is detected.
【００１３】[0013]
【発明の効果】以上のようにこの発明の透明ウェブ上の
見当マーク検出方法によれば、透明ウェブであれば透明
インキ及び可視インキのいずれの見当マークをも検出で
き、例えば見当合せに採用する場合には装置全体を小型
化することができる。As described above, according to the method of detecting a register mark on a transparent web of the present invention, any register mark of transparent ink and visible ink can be detected on a transparent web, and is used for registering, for example. In this case, the entire device can be downsized.
【図１】この発明の透明ウェブ上の見当マーク検出方法
を実現するための構成を示す図である。FIG. 1 is a diagram showing a configuration for realizing a register mark detection method on a transparent web according to the present invention.
【図２】光源１の波長分布を示す図である。FIG. 2 is a diagram showing a wavelength distribution of a light source 1.
【図３】センサ２の分光感度特性を示す図である。FIG. 3 is a diagram showing a spectral sensitivity characteristic of the sensor 2.
【図４】有色の不透過インキによるトンボが検出される
場合の波長分布を示す図である。FIG. 4 is a diagram showing a wavelength distribution when a register mark due to a color opaque ink is detected.
【図５】有色の透過性インキによるトンボが検出される
場合の波長分布を示す図である。FIG. 5 is a diagram showing a wavelength distribution when a register mark due to a colored transparent ink is detected.
【図６】ＵＶ吸収剤入り透明インキによるトンボが検出
される場合の波長分布を示す図である。FIG. 6 is a diagram showing a wavelength distribution when a register mark due to a transparent ink containing a UV absorber is detected.
１ 光源 ２ センサ ３ 透明ウェブ ４ 見当マーク ５ 反射板 1 light source 2 sensor 3 transparent web 4 register mark 5 reflector
Claims (2)
光までを含む光を照射して前記透明ウェブを透過した光
を受光することにより監視し、受光した光の波長分布に
おける各波長領域の受光強度の減衰により透明インキで
印刷された見当マークと可視インキで印刷された見当マ
ークのいずれをも検出するようにしたことを特徴とする
透明ウェブ上の見当マーク検出方法。1. A transparent web being conveyed is irradiated with light including ultraviolet rays to visible light, and the light transmitted through the transparent web is monitored to be monitored, and light is received in each wavelength region in the wavelength distribution of the received light. A method for detecting a register mark on a transparent web, wherein both a register mark printed with a transparent ink and a register mark printed with a visible ink are detected due to a decrease in strength.
した場合は有色の不透過インキによる見当マークが検出
されたと判断し、可視領域のみで減衰した場合は有色の
透過性インキによる見当マークが検出されたと判断し、
紫外線領域のみで減衰した場合は紫外線吸収剤入り透明
インキによる見当マークが検出されたと判断するように
した請求項１に記載の透明ウェブ上の見当マーク検出方
法。2. When it is attenuated in the entire range from the ultraviolet region to the visible region, it is judged that the register mark by the colored opaque ink is detected, and when it is attenuated only in the visible region, the register mark by the colored transparent ink is detected. Judge that it was detected,
The method of detecting a register mark on a transparent web according to claim 1, wherein it is judged that the register mark by the transparent ink containing the ultraviolet absorber is detected when the register mark is attenuated only in the ultraviolet region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04100618A JP3080335B2 (en) | 1992-03-26 | 1992-03-26 | Register mark detection method on transparent web |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04100618A JP3080335B2 (en) | 1992-03-26 | 1992-03-26 | Register mark detection method on transparent web |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05269976A true JPH05269976A (en) | 1993-10-19 |
| JP3080335B2 JP3080335B2 (en) | 2000-08-28 |
Family
ID=14278832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04100618A Expired - Lifetime JP3080335B2 (en) | 1992-03-26 | 1992-03-26 | Register mark detection method on transparent web |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3080335B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038983A (en) * | 1999-06-24 | 2001-02-13 | Eastman Kodak Co | Method for forming digital printed matter, digital printer, and operating program thereof |
| EP1666253A3 (en) * | 2003-01-14 | 2006-06-21 | Quad/Tech, Inc. | Scanning heads for a print detection apparatus |
| JP2007021743A (en) * | 2005-07-12 | 2007-02-01 | Dainippon Printing Co Ltd | Register mark detecting device and printing unit |
| JP2007090679A (en) * | 2005-09-29 | 2007-04-12 | Dainippon Printing Co Ltd | Method and apparatus for observing transparent register |
| WO2009110173A1 (en) * | 2008-03-05 | 2009-09-11 | 太洋電機産業株式会社 | Register mark detection apparatus |
-
1992
- 1992-03-26 JP JP04100618A patent/JP3080335B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038983A (en) * | 1999-06-24 | 2001-02-13 | Eastman Kodak Co | Method for forming digital printed matter, digital printer, and operating program thereof |
| EP1666253A3 (en) * | 2003-01-14 | 2006-06-21 | Quad/Tech, Inc. | Scanning heads for a print detection apparatus |
| US7119820B2 (en) | 2003-01-14 | 2006-10-10 | Quad/Tech, Inc. | Scanning heads |
| JP2007021743A (en) * | 2005-07-12 | 2007-02-01 | Dainippon Printing Co Ltd | Register mark detecting device and printing unit |
| JP2007090679A (en) * | 2005-09-29 | 2007-04-12 | Dainippon Printing Co Ltd | Method and apparatus for observing transparent register |
| WO2009110173A1 (en) * | 2008-03-05 | 2009-09-11 | 太洋電機産業株式会社 | Register mark detection apparatus |
| US7826041B2 (en) | 2008-03-05 | 2010-11-02 | Taiyo Electric Industry Co., Ltd. | Register mark detection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3080335B2 (en) | 2000-08-28 |
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