JPH05104061A - Coating method of joint part - Google Patents
Coating method of joint partInfo
- Publication number
- JPH05104061A JPH05104061A JP3296683A JP29668391A JPH05104061A JP H05104061 A JPH05104061 A JP H05104061A JP 3296683 A JP3296683 A JP 3296683A JP 29668391 A JP29668391 A JP 29668391A JP H05104061 A JPH05104061 A JP H05104061A
- Authority
- JP
- Japan
- Prior art keywords
- support
- coating
- painting
- joint part
- joint
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は特に写真用フィルム、印
画紙などの写真感光材料の製造において、連続走行して
いる帯状可撓性支持体（以下「ウエブ」と称する）の接
合部を検出して各種液状組成物を付与する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a joint portion of a continuously running strip-shaped flexible support (hereinafter referred to as "web") particularly in the production of photographic light-sensitive materials such as photographic film and photographic paper. And a method of applying various liquid compositions.
【０００２】[0002]
【従来の技術】ウエブ接合部の塗布方法として、接合部
で発生する厚塗り，又は塗布ムラによる損失を軽減する
ために種々の対策が打たれている。 可撓性接着テープを前方側ウエブ後端部の表面と後
方側ウエブ前端部の裏面とに貼付けするウエブ接合方法
（特開昭５４−３４３４３号公報参照） ウエブ接合部の被塗布面にあらかじめ疎水性液体を
付与する方法（特開昭５４−６２２４１号公報参照） ウエブ接合部の被塗布面の隙間をあらかじめ可融性
材料で埋める方法（特開昭５８−５０１６７９号公報参
照） ウエブ接合部が塗布される直前に、注液器を塗布ウ
エブより離し、接合部通過後注液器をもとの位置に戻す
方法（特開昭５８−８８０７４号公報参照） ウエブ接合部を放電処理により親水化する方法（特
開昭５５−１４２５６５号公報、特開平２−２６５９３
０号公報参照） などが開示されている。又、接合部に限定されないウエ
ブの塗布方法として、 塗布バックアップローラに高電圧を印加させて、注
液器とウエブ間の液切れを防止して塗布速度を上昇する
方法（特公昭４９−７０５０号公報参照） 放電電極に直流高電圧を印加してコロナ放電により
ウエブ表面に単極性の電荷を与えて塗布する方法（特開
平１−２１４４１号公報） 従来ウエブの接合部検出方法として、 ウエブ端どうしを突き合わせて接合する場合、アル
ミ蒸着などの導電層を有する接着テープを用いて貼りあ
わせ金属検出器により検出する方法（特開平２−２６５
９３０号明細書）2. Description of the Related Art As a method for coating a web-bonded portion, various measures have been taken in order to reduce the loss caused by thick coating or uneven coating generated at the bonded portion. A web joining method in which a flexible adhesive tape is applied to the front end of the front web and the rear end of the rear web (see Japanese Patent Laid-Open No. 54-34343). Method of applying a volatile liquid (see Japanese Patent Laid-Open No. 54-62241) Method of filling a gap on the coated surface of the web-bonded portion with a fusible material in advance (see Japanese Patent Laid-Open No. 58-501679) A method of separating the liquid injector from the coating web immediately before coating and returning the liquid injector to its original position after passing through the joint (see Japanese Patent Laid-Open No. 58-88074). Hydrophilization of the web joint by discharge treatment. Method (JP-A-55-142565, JP-A-2-26593)
No. 0), etc. are disclosed. Further, as a method for applying a web which is not limited to the joint portion, a method of applying a high voltage to the application backup roller to prevent the liquid from running out between the liquid injector and the web and increasing the application speed (Japanese Patent Publication No. 49-5050). (See Japanese Laid-Open Patent Publication) A method of applying a DC high voltage to a discharge electrode to apply a unipolar electric charge to the surface of a web by corona discharge (JP-A 1-214441). In the case of butting and joining, a method of detecting with a metal detector using an adhesive tape having a conductive layer such as aluminum vapor deposition is disclosed (JP-A-2-265).
930 specification)
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、、
、の方法はウエブの接合工程が複雑となり、接合部
作成に時間を要して生産性が低下する問題点があった。
の方法は注液器（コーティングヘッド）を急速に移動
するため、塗布される液体の流れに乱れが発生するとい
う問題点があった。の方法はウエブ接合部の前後にわ
たり、高周波高電圧を放電電極に印加して処理するため
に、処理後ウエブ表面に形成された正負の電荷により製
品とすべき接合部以外のウエブ部分に塗布ムラが発生す
るという問題点があった。の方法において直流高電圧
を塗布バックアップローラに印加するか、またの方法
のように放電電極に直流高電圧を印加してコロナ放電に
よりウエブ表面に単極性の電荷を形成する場合、正負の
電荷による塗布ムラは発生しないが、ウエブを接合する
ためにの方法のような導電層を有する接着テープを用
いると、導電層のシールド効果および接着テープの絶縁
体（支持部材）厚みが小さいため接合部の静電容量が過
大になることにより、塗布バックアップローラ上でのウ
エブ表面電位は低下し、注液器とウエブ間の塗布液切れ
を抑制する効果が減じる等の問題点があった。[Problems to be Solved by the Invention] However,
The method of (1) and (2) has a problem that the joining process of the web is complicated, it takes time to form the joined portion, and the productivity is lowered.
The method of (1) moves the liquid injector (coating head) rapidly, which causes a problem that the flow of the applied liquid is disturbed. In this method, high-frequency high voltage is applied to the discharge electrode before and after the web joint, so that the positive and negative charges formed on the surface of the web after the treatment cause uneven coating on the web other than the joint to be the product. There was a problem that occurs. When a high DC voltage is applied to the coating backup roller in the above method or when a unipolar charge is formed on the web surface by corona discharge by applying a high DC voltage to the discharge electrode as in the method, Although coating unevenness does not occur, when an adhesive tape having a conductive layer is used as in the method for joining webs, the shielding effect of the conductive layer and the thickness of the insulator (supporting member) of the adhesive tape are small, so When the electrostatic capacitance becomes excessive, the surface potential of the web on the coating backup roller is lowered, and there is a problem that the effect of suppressing the breakage of the coating liquid between the liquid injector and the web is reduced.
【０００４】本発明の目的は上記従来の問題点を解消
し、接合工程を複雑化せず、塗布ムラを起こさずに、注
液器とウエブ接合部間の塗布液切れを抑制して、塗布速
度を著しく向上することのできる接合部塗布方法を提供
することにある。The object of the present invention is to solve the above-mentioned problems of the prior art, to prevent the coating process from becoming complicated, to prevent coating unevenness, and to prevent the coating liquid from running out between the liquid injector and the web-bonded portion, thereby performing coating. It is an object of the present invention to provide a joint coating method capable of significantly improving the speed.
【０００５】[0005]
【課題を解決するための手段及び作用】本発明の上記目
的は、連続走行する帯状可撓性支持体の端末を継続する
可撓性支持体の端末と突合せ、接着テープにより接合さ
れた接合部上に、塗布バックアップローラで支持しつつ
塗布液を塗布する方法において、該接着テープに黒色層
を設け、該支持体に対し送り出し部分において赤外線を
照射して、該支持体を透過する赤外線もしくは該支持体
により反射する赤外線の光量を計測し、該光量の変化量
が所定の値を外れた場合に該支持体の接合部が通過した
ものと判定し、該塗布バックアップローラ上での該接合
部の表面電位を０．５〜２．０ｋＶに荷電させて塗布す
ることを特徴とする接合部塗布方法によって達成され
る。SUMMARY OF THE INVENTION The above object of the present invention is to join a continuous running strip-shaped flexible support end with a continuous flexible support end and join them with an adhesive tape. In the method of applying a coating liquid while supporting it with a coating backup roller, a black layer is provided on the adhesive tape, and infrared rays are radiated to the support at the sending-out portion to transmit the infrared rays or the infrared rays that pass through the support. The amount of infrared light reflected by the support is measured, and when the amount of change in the amount of light deviates from a predetermined value, it is determined that the joining portion of the support has passed, and the joining portion on the coating backup roller is determined. It is achieved by the method of applying a joint portion, characterized in that the surface potential is applied to 0.5 to 2.0 kV.
【０００６】本発明において塗布バックアップローラ上
での該接合部の表面電位を０．５〜２．０ｋＶに荷電さ
せて塗布するということは、方法として前記のコロナ
放電による支持体への単極性の電荷を付与する方法と前
記の塗布バックアップローラへの直流電圧印加による
方法がある。については、直径１００μｍ〜２００μ
ｍのワイヤ状導電材料を用い、張力を１ｋｇ以上に維持
してワイヤを張り、該ワイヤ電極を間隔≦３００ｍｍに
保持する中間保持枠を有するものを複数本ワイヤの長さ
方向に２０ｍｍ以上離して千鳥配列に配置し、ワイヤ状
電極とウエブとの間隔をワイヤ端部においてワイヤ中央
部に比して小さくしたものを用いることが好ましい。こ
れによってウエブの搬送方向及び幅方向の電位変動を極
力小さくし、電位変動による塗布ムラをすくなくするこ
とが出来る。（特願平２−１７４３６７号明細書参照）
また、を用いる場合には、塗布バックアップローラの
ジャーナル部分にセラミックによる絶縁被覆を施して流
体軸受けで支軸し、さらに該軸を延長した回転部分に接
続端子としてブラシ型スリップリング以外のものを用い
て直流高圧電源を接続することが好ましい。これによっ
て従来の軸受けがボールベアリングの時に比して回転の
フレが減少し、ブラシ型スリップリングを用いる時に比
して均一に０．５〜３ｋＶの高電圧の印加が可能となる
（特開平２−２５１２６６号公報参照）上記または
の方法によって塗布バックアップローラ上での該支持体
接合部の単極性の表面電位として０．５〜２．０ｋＶを
実現できる。好ましくは該支持体接合部の表面電位とし
ては１〜２ｋＶである。このことによって該支持体接合
部と注液器間に静電引力が作用し、接合部表面への塗布
液の付着が促進され、塗布液切れが抑制される。In the present invention, applying the surface potential of the junction portion on the coating backup roller by charging it to 0.5 to 2.0 kV means to apply a unipolar material to the support by corona discharge as a method. There are a method of applying an electric charge and a method of applying a DC voltage to the coating backup roller. About 100μm to 200μ in diameter
m of wire-shaped conductive material, tensioning the wire to 1 kg or more, and stretching the wire, and having an intermediate holding frame for holding the wire electrodes at intervals ≤ 300 mm, a plurality of wires having a distance of 20 mm or more in the length direction of the wire. It is preferable to use a staggered arrangement in which the distance between the wire electrode and the web is smaller at the wire end portion than in the wire central portion. This makes it possible to minimize potential fluctuations in the web transport direction and width direction, and to eliminate coating unevenness due to potential fluctuations. (See Japanese Patent Application No. 2-174367)
In addition, when using, the journal portion of the coating backup roller is provided with a ceramic insulating coating and is supported by a fluid bearing, and the rotating portion extending the shaft is made of a terminal other than a brush type slip ring as a connecting terminal. It is preferable to connect a direct current high voltage power supply. As a result, the rotational deflection is reduced as compared with the conventional ball bearing, and a high voltage of 0.5 to 3 kV can be uniformly applied as compared with the case where a brush type slip ring is used (Japanese Patent Laid-Open No. Hei 2). According to the method described above or the method described above, it is possible to realize a unipolar surface potential of 0.5 to 2.0 kV on the coating backup roller at the joint portion of the support. The surface potential of the support junction is preferably 1 to 2 kV. As a result, an electrostatic attractive force acts between the support joint portion and the liquid injector, promoting the adhesion of the coating liquid to the joint surface, and suppressing the coating liquid from running out.
【０００７】本発明において該支持体の突合せ接合に、
従来の導電層を有する接着テープを用いずに、黒色層を
有する接着テープを使用するということは、従来の導電
層を有する接着テープの静電容量が該支持体の静電容量
に比して、数十倍程度過大である点を解消することであ
る。導電層を有する接着テープの場合、導電層外側（表
面側）にある絶縁体（一般的に支持部材）厚みが支持体
に比して小さく、かつ静電容量は絶縁体の厚みに反比例
するために導電層と導電層外側の絶縁体とで構成される
コンデンサの静電容量はかなり大きくなる。上記の方
法により、該支持体接合部表面に単極性の静電荷を付与
する場合、使用される電圧波形にリップルがない精密な
直流高電圧電源が供給しうる電流量は比較的小さいた
め、該支持体接合部の表面電位は支持体表面電位の数十
分の１程度に低下する。また、上記の方法による場合
は、接着テープの導電層によるシールド効果により塗布
バックアップローラ上での該支持体接合部の表面電位が
低下する。該支持体接合部の表面電位を０．５〜２．０
ｋＶにして塗布液切れを抑制するためには、絶縁体であ
る接着テープを用いる必要がある。接着テープを支持体
とおなじく絶縁体とした場合、従来の金属検出器にかわ
る該支持体接合部の検出方法として、接着テープに黒色
層を設けて赤外線の透過光量または反射光量の変化量に
より判定するということは、ＬＥＤなどを光源としその
波長が８２０ｎｍ以上の赤外線を支持体に照射して、透
過光または反射光をフォトダイオードなどにより検出す
る場合に、支持体接合部の接着テープの黒色層にて赤外
線がほぼ完全に吸光されることでフォトダイオードに検
出される赤外線光量が大きく変化するので、容易に支持
体接合部を判別できる。さらには、赤外線を用いるので
写真感光材料の液状組成物を支持体に塗布後も、カブリ
などのダメージを該写真感光材料に与えることなく支持
体接合部を検出できる。本発明における接着テープの黒
色層としては、カーボンブラックなどの無機顔料かアニ
リンブラックなどの有機顔料を、樹脂やセルロース誘導
体を溶かした溶剤中に分散した塗料を、接着テープの支
持部材に塗布し乾燥してえられる。耐傷性の観点から該
黒色層は該接着テープの外面にださず、たとえば支持部
材と糊層の間に設けることが好ましい。本発明におい
て、塗布バックアープローラ上での支持体接合部の表面
電位を０．５〜２．０ｋＶにするには、該支持体接合部
が検出部を通過してから放電部分迄の移動距離を計算
し、コロナ放電により上記表面電位をえる場合には、上
記支持体接合部がコロナ放電電極に達する直前に該コロ
ナ放電電極に直流高電圧を印加し始めることで、また塗
布バックアップローラに直流高電圧を印加する方法によ
る場合は、上記支持体接合部が塗布バックアップローラ
に達する直前に該塗布バックアップローラに直流高電圧
を印加し始めることにより達成される。In the present invention, for butt-joining the supports,
The use of the adhesive tape having the black layer instead of the adhesive tape having the conventional conductive layer means that the capacitance of the adhesive tape having the conventional conductive layer is higher than that of the support. The point is to eliminate the point that is several tens of times too large. In the case of an adhesive tape having a conductive layer, the thickness of the insulator (generally a supporting member) on the outside (surface side) of the conductive layer is smaller than that of the supporting body, and the capacitance is inversely proportional to the thickness of the insulator. In addition, the capacitance of the capacitor composed of the conductive layer and the insulator outside the conductive layer becomes considerably large. When a unipolar electrostatic charge is applied to the surface of the support junction by the above method, the amount of current that can be supplied by a precise DC high-voltage power supply with no ripple in the voltage waveform used is relatively small. The surface potential of the support-bonded portion drops to about one tenth of the support surface potential. Also, in the case of the above method, the surface potential of the support-bonded portion on the coating backup roller decreases due to the shielding effect of the conductive layer of the adhesive tape. The surface potential of the support joint portion is 0.5 to 2.0.
It is necessary to use an adhesive tape that is an insulator in order to reduce the coating liquid to kV and prevent the coating liquid from running out. If the adhesive tape is an insulator that is similar to the support, a method of detecting the support joint part, which is an alternative to conventional metal detectors, is to judge by the amount of change in the amount of infrared light transmitted or reflected by providing a black layer on the adhesive tape. This means that when an LED or the like is used as a light source and the support is irradiated with infrared rays having a wavelength of 820 nm or more, and transmitted light or reflected light is detected by a photodiode or the like, the black layer of the adhesive tape at the support-bonding portion is detected. Since the infrared light is substantially completely absorbed by, the amount of infrared light detected by the photodiode changes greatly, so that the support joint can be easily identified. Further, since infrared rays are used, even after the liquid composition of the photographic light-sensitive material is applied to the support, the support-bonded portion can be detected without causing damage such as fog to the photographic light-sensitive material. As the black layer of the adhesive tape in the present invention, an inorganic pigment such as carbon black or an organic pigment such as aniline black is dispersed in a solvent in which a resin or a cellulose derivative is dissolved, and a coating material is applied to a supporting member of the adhesive tape and dried. You can get it. From the viewpoint of scratch resistance, it is preferable that the black layer is not provided on the outer surface of the adhesive tape and is provided, for example, between the support member and the glue layer. In the present invention, in order to set the surface potential of the support-bonding portion on the coating back-up roller to 0.5 to 2.0 kV, the moving distance from the support-bonding portion to the discharge portion after passing through the detection portion. When calculating the surface potential by corona discharge, by starting to apply a high DC voltage to the corona discharge electrode just before the support joint reaches the corona discharge electrode, the direct current is applied to the coating backup roller. The method of applying a high voltage is achieved by starting to apply a DC high voltage to the coating backup roller immediately before the support joint portion reaches the coating backup roller.
【０００８】本発明の実施態様を図を用いて説明する
と、図１はコロナ放電による支持体接合部表面の単極性
の静電荷付与方法であるが、支持体接合部１は接合検出
器２を通過後、コロナ放電電極３に対向して設けられた
接地極であるパスローラ９に到達する。この直前に直流
高電圧電源４から高電圧がコロナ放電電極３に供給さ
れ、コロナ放電が開始し、支持体接合部１の表面に単極
性電荷が付与される。その後、支持体接合部１は塗布バ
ックアップローラ５において注液器６によって塗布液７
を付与される。また図２は塗布バックアップローラに直
流高電圧を印加する方法であるが、支持体接合部１が接
合検出器２を通過後、塗布バックアップローラ５に到達
する直前に直流高電圧電源４から直流高電圧の塗布バッ
クアップローラ５への印加が開始され、支持体接合部１
の表面に単極性電荷が付与され、支持体接合部１に注液
器６により塗布液７が付与される。An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a method for imparting a unipolar electrostatic charge to the surface of a support joint by corona discharge. After passing, it reaches the pass roller 9 which is a ground electrode provided so as to face the corona discharge electrode 3. Immediately before this, a high voltage is supplied from the DC high-voltage power supply 4 to the corona discharge electrode 3, corona discharge is started, and a unipolar electric charge is applied to the surface of the support body joint portion 1. After that, the support joint part 1 is coated with the coating liquid 7 by the liquid injector 6 on the coating backup roller 5.
Is granted. FIG. 2 shows a method of applying a high DC voltage to the coating backup roller. However, after the support joint portion 1 has passed through the joint detector 2 and immediately before reaching the coating backup roller 5, the DC high voltage power source 4 supplies a high DC voltage. The application of the voltage to the coating backup roller 5 is started, and the support joint portion 1
A unipolar electric charge is applied to the surface of, and the coating liquid 7 is applied to the support-bonded portion 1 by the liquid injector 6.
【０００９】[0009]
【実施例】本発明を一実施例によってさらに詳しく説明
する。ただし本発明は本実施例にのみ限定されるもので
はない。 （実施例−１）ウエブ（支持体）としてポリエチレンの
レジンコーティッド紙、厚み：２２０μｍの被塗布面
に、厚み０．３μｍのゼラチン層を、裏面にアルミナゾ
ル層をそれぞれ下引したものを用いた。ウエブ幅は１．
４ｍで被塗布面の表面粗度は平均粗さＲａ＝４〜５μｍ
であった。さらに上記ウエブにカラーペーパー塗布液を
付与し乾燥したものも用いた。カラーペーパー感光層の
層構成は３層のハロゲン化銀を含む感光層と、３層のカ
ラーフィルタ層と１層の保護層よりなり、層全体の厚み
は１０μｍであった。ウエブ端の突合せ接合には接着テ
ープとして、厚み０．３μｍのゼラチン層が下引された
厚み２５μｍのポリエチレンテレフタレート（ＰＥＴ）
を支持部材とし、別のＰＥＴ面に黒色層と糊層を付与さ
れたものを用意した。接着テープの厚みは５０μｍであ
った。また比較のために上記支持部材ＰＥＴ面に糊層の
みを付与された透明テープも用意した。両者の接着テー
プ厚みに差がなかった。支持体接合部用検出センサとし
てキーエンス（株）製赤外線センサＰＧ−６０２の光源
部２ａと受光部２ｂを分離したものを用いた。また比較
のためにニレコ（株）製超音波センサＰＣチェッカを用
いた。検出センサの光源部２ａ（または発信部）と受光
部２ｂ（または受信部）の間隔は３０ｍｍとした。図１
に示される方法により速度５ｍ／ｓｅｃで走行する上記
ウエブの接合部の検出の可否を評価した。結果を表１に
示す。The present invention will be described in more detail by way of an example. However, the present invention is not limited to this embodiment. (Example-1) A resin coated paper made of polyethylene was used as a web (support), a gelatin layer having a thickness of 0.3 µm was subbed on the coated surface having a thickness of 220 µm, and an alumina sol layer was subbed on the back surface. .. The web width is 1.
The surface roughness of the coated surface at 4 m is average roughness Ra = 4 to 5 μm.
Met. Further, the above web was dried by applying a color paper coating solution. The photosensitive layer of the color paper was composed of three photosensitive layers containing silver halide, three color filter layers and one protective layer, and the total layer thickness was 10 μm. Adhesive tape for butt-joining of the web edges, polyethylene terephthalate (PET) 25 μm thick with a gelatin layer 0.3 μm thick subbed
Was used as a supporting member, and another PET surface provided with a black layer and a glue layer was prepared. The thickness of the adhesive tape was 50 μm. For comparison, a transparent tape having only the adhesive layer on the PET surface of the support member was also prepared. There was no difference in the adhesive tape thickness between the two. An infrared sensor PG-602 manufactured by KEYENCE CORPORATION, in which the light source unit 2a and the light receiving unit 2b were separated, was used as the support joint detection sensor. For comparison, an ultrasonic sensor PC checker manufactured by Nireco Corp. was used. The distance between the light source unit 2a (or the transmitting unit) and the light receiving unit 2b (or the receiving unit) of the detection sensor was 30 mm. Figure 1
The method shown in Table 1 evaluated whether or not the bonded portion of the web running at a speed of 5 m / sec could be detected. The results are shown in Table 1.
【００１０】[0010]
【表１】 [Table 1]
【００１１】表１においては、本発明の実施例は、赤外
線センサと黒色層を設けた接着テープを用いている組合
せであり、その他３通りの組合せは比較例である。本発
明によればカラーペーパー液塗布済みウエブと未塗布ウ
エブともにその突合せ接合部を検出できる。In Table 1, the examples of the present invention are combinations using an infrared sensor and an adhesive tape provided with a black layer, and the other three combinations are comparative examples. According to the present invention, it is possible to detect the butt joints of both the color paper liquid-coated web and the uncoated web.
【００１２】（実施例−２）つぎにウエブとして実施例
−１における未塗布ウエブを用い、塗布液として実施例
−１に記述のカラーペーパー塗布液を用いた。ただし、
塗布液の付与量：ウエブ面積１ｍ2 当り計１００ｍｌ、
最下層のイエロ発色層のゼラチン濃度：６重量％、粘度
（剪断速度：５０ｓｅｃ-1において）：４０ｍＰａ・
ｓ、付与量：１４．４ｍ／ｍ2 。ウエブ突合せ接合用接
着テープとして、実施例−１に記述の黒色層を設けたテ
ープと、実施例−１に記載の黒色層を設けたテープから
ゼラチン下引層を除いたテープを用い、また比較のため
に、実施例−１に記述の接着テープ用支持部材（ＰＥ
Ｔ）に導電層としてアルミ蒸着層と糊層を設けた接着テ
ープを用いた。さらに図１によるコロナ放電による支持
体接合部への単極性電荷付与を行ったのち、カラーペー
パ塗布液を付与し、支持体接合部での塗布液切れが発生
する支持体走行速度を評価した。塗布バックアップロー
ラ上での支持体通常部の電位が所定の値になるようにコ
ロナ放電電極に印加する直流高電圧を調整し、塗布バッ
クアップローラ上での支持体接合部の電位を測定した。
直流高電圧電源としてトレック社製モデル６６４を、電
位測定にはトレック社製モデル３３４を用いた。同時に
実施例−１に記述の黒色層を設けた接着テープによる支
持体接合部に、コロナ放電による単極性電荷を与えない
時の支持体接合部での塗布液切れが発生する支持体走行
速度も評価した。塗布液の付与方法として図１又は図２
に示すスライドビード方式を用い減圧室の圧力を大気圧
より４０ｍｍＨ2 Ｏ低く設定し、注液器先端と塗布バッ
クアップローラの間隙は０．４ｍｍとした。結果を表２
に示す。(Example-2) Next, the uncoated web of Example-1 was used as the web, and the color paper coating solution described in Example-1 was used as the coating solution. However,
Application amount of coating liquid: 100 ml in total per 1 m 2 of web area,
Gelatin concentration in the lowermost yellow coloring layer: 6% by weight, viscosity (at shear rate: 50 sec -1 ): 40 mPa.
s, application amount: 14.4 m / m 2 . As the adhesive tape for butt-joining the web, a tape provided with the black layer described in Example-1 and a tape obtained by removing the gelatin subbing layer from the tape provided with the black layer described in Example-1 were used. For supporting the adhesive tape supporting member (PE
An adhesive tape provided with an aluminum vapor deposition layer and a glue layer as a conductive layer in T) was used. Further, after applying a unipolar charge to the support-bonded portion by corona discharge according to FIG. 1, a color paper coating solution was applied and the running speed of the support at which the coating solution was run out at the support-bonded portion was evaluated. The DC high voltage applied to the corona discharge electrode was adjusted so that the potential of the normal portion of the support on the coating backup roller was a predetermined value, and the potential of the joint portion of the substrate on the coating backup roller was measured.
A Trek Model 664 was used as a DC high-voltage power source, and a Trek Model 334 was used for potential measurement. At the same time, the support running speed at which the coating liquid runs out at the support bonding part when no unipolar charge is applied by corona discharge to the support bonding part by the adhesive tape provided with the black layer described in Example-1 evaluated. 1 or 2 as a method of applying the coating liquid.
The pressure in the decompression chamber was set to be 40 mmH 2 O lower than the atmospheric pressure by using the slide bead method shown in, and the gap between the tip of the liquid injector and the coating backup roller was 0.4 mm. The results are shown in Table 2.
Shown in.
【００１３】[0013]
【表２】 [Table 2]
【００１４】表２においては、導電層を有さない黒色層
を設けた接着テープを用いた支持体接合部に、単極性電
荷を与えることにより、支持体接合部での塗布液切れを
防止でき、実験Ｎｏ．１〜Ｎｏ．４のように限界の塗布
速度を上昇できることが判る。但し、実験No.5の場合は
支持体接合部の電位が上がりすぎてスジが発生してい
る。更に、導電層を有さない黒色層を設け、且つゼラチ
ン下引層が無い接着テープを用いた場合は実験Ｎｏ．７
〜１０に示すように、一層の限界速度上昇が達成できる
ことが判る。また、実験Ｎｏ．６のようにアルミ蒸着層
のような導電層を有する接着テープを用いた支持体接合
部は、静電容量が大きく接合部表面の電荷による電位が
低いため支持体接合部での塗布液切れが防止できない。In Table 2, by applying a unipolar charge to the support joint using an adhesive tape provided with a black layer having no conductive layer, it is possible to prevent the coating liquid from running out at the support joint. , Experiment No. 1-No. It can be seen that the limit coating speed can be increased as in No. 4. However, in the case of Experiment No. 5, streaks were generated due to the potential of the support joint portion rising too high. Further, in the case where an adhesive tape having a black layer having no conductive layer and having no gelatin subbing layer was used, Experiment No. 7
As shown in 10 to 10, it can be seen that a further increase in the limit speed can be achieved. In addition, the experiment No. In the case where the support-bonded portion using the adhesive tape having the conductive layer such as the aluminum vapor-deposited layer as in No. 6, the electrostatic capacitance is large and the potential due to the charge on the surface of the bonded portion is low, so that the coating solution may run out at the support-bonded portion. It cannot be prevented.
【００１５】[0015]
【発明の効果】上記に示すように本発明の支持体接合部
の塗布方法により、支持体接合部を確実に検出でき、さ
らに支持体接合部の塗布液切れを防止して、塗布限界速
度を向上させることができた。As described above, according to the method for coating the support-bonded portion of the present invention, the support-bonded portion can be reliably detected, and further, the running-out of the coating solution at the support-bonded portion can be prevented, and the coating limit speed can be increased. I was able to improve.
【図１】本発明の支持体接合部の塗布方法を行う装置の
１実施例の概略側面図FIG. 1 is a schematic side view of an embodiment of an apparatus for performing a method for applying a support-bonded portion of the present invention.
【図２】本発明の支持体接合部の塗布方法を行う装置の
他の実施例の概略側面図FIG. 2 is a schematic side view of another embodiment of the apparatus for performing the method for applying the support-bonding portion of the present invention.
１ 支持体接合部 ２ 接合部検出器 ３ コロナ放電電極 ４ 直流高電圧電源 ５ 塗布バックアップローラ ６ 注液器 ７ 塗布液 ８ 減圧室 1 Support Joint 2 Joint Detector 3 Corona Discharge Electrode 4 DC High Voltage Power Supply 5 Coating Backup Roller 6 Injector 7 Coating Liquid 8 Decompression Chamber
Claims (1)
末を継続する可撓性支持体の端末と突き合わせ、接着テ
ープにより接合された接合部上に、塗布バックアップロ
ーラで支持しつつ塗布液を塗布する方法において、該接
着テープに黒色層を設け、該支持体に対し送り出し部分
において赤外線を照射して、該支持体を透過する赤外線
もしくは該支持体により反射する赤外線の光量を計測
し、該光量の変化量が所定の値を外れた場合に該支持体
の接合部が通過したものと判定し、該塗布バックアップ
ローラ上での該接合部の表面電位を０．５〜２．０ｋＶ
に荷電させて塗布することを特徴とする接合部塗布方
法。1. A coating is carried out by supporting an end of a continuously running strip-shaped flexible support against an end of a continuous flexible support and applying the same on a joint joined by an adhesive tape while being supported by a coating backup roller. In the method of applying a liquid, a black layer is provided on the adhesive tape, and the support is irradiated with infrared rays at the sending-out portion to measure the amount of infrared rays that pass through the supports or that are reflected by the supports. When the change amount of the light amount deviates from a predetermined value, it is determined that the joint portion of the support has passed, and the surface potential of the joint portion on the coating backup roller is 0.5 to 2.0 kV.
A method for applying a joint portion, which comprises applying a charge to the surface of the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296683A JP2632265B2 (en) | 1991-10-17 | 1991-10-17 | Joint application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296683A JP2632265B2 (en) | 1991-10-17 | 1991-10-17 | Joint application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05104061A true JPH05104061A (en) | 1993-04-27 |
| JP2632265B2 JP2632265B2 (en) | 1997-07-23 |
Family
ID=17836731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3296683A Expired - Fee Related JP2632265B2 (en) | 1991-10-17 | 1991-10-17 | Joint application method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2632265B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6607786B2 (en) | 2001-02-28 | 2003-08-19 | Fuji Photo Film Co., Ltd. | Method of curtain coating |
| EP1974949A1 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer image-receiving sheet and production method thereof |
| EP1974947A1 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer recording material and method of producing the same |
| EP1974948A2 (en) | 2007-03-29 | 2008-10-01 | FUJIFILM Corporation | Image-forming method using heat-sensitive transfer system |
| EP1974945A2 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer image-receiving sheet |
| EP1974950A1 (en) | 2007-03-30 | 2008-10-01 | FUJIFILM Corporation | Thermal transfer image-receiving sheet and method for producing it |
| EP1974946A1 (en) | 2007-03-30 | 2008-10-01 | FUJIFILM Corporation | Thermal transfer image-receiving sheet and surface condition improver |
| EP1980409A2 (en) | 2007-03-29 | 2008-10-15 | FUJIFILM Corporation | Heat-sensitive transfer sheet for use in heat-sensitive transfer system and image-forming method using heat-sensitive transfer system |
| EP1982840A1 (en) | 2007-03-27 | 2008-10-22 | FUJIFILM Corporation | Heat-sensitive transfer sheet and image-forming method |
| EP1982839A1 (en) | 2007-03-27 | 2008-10-22 | FUJIFILM Corporation | Heat-sensitive transfer image-forming method |
| EP1985457A2 (en) | 2007-04-25 | 2008-10-29 | FUJIFILM Corporation | Cardboard cylinder for a heat-sensitive transfer image-receiving sheet, rolled heat-sensitive transfer image-receiving sheet to form a roll shape, and image-forming method |
| EP2030799A2 (en) | 2007-08-29 | 2009-03-04 | Fujifilm Corporation | Heat-sensitive transfer image-receiving sheet and method of producing the same |
| EP2042334A2 (en) | 2007-09-27 | 2009-04-01 | Fujifilm Corporation | Method of producing heat-sensitive transfer image-receiving sheet |
| EP2075139A1 (en) | 2007-12-28 | 2009-07-01 | Fujifilm Corporation | Method of forming image by heat-sensitive transfer system |
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-
1991
- 1991-10-17 JP JP3296683A patent/JP2632265B2/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6607786B2 (en) | 2001-02-28 | 2003-08-19 | Fuji Photo Film Co., Ltd. | Method of curtain coating |
| EP1982839A1 (en) | 2007-03-27 | 2008-10-22 | FUJIFILM Corporation | Heat-sensitive transfer image-forming method |
| EP1982840A1 (en) | 2007-03-27 | 2008-10-22 | FUJIFILM Corporation | Heat-sensitive transfer sheet and image-forming method |
| EP1974945A2 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer image-receiving sheet |
| EP1974947A1 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer recording material and method of producing the same |
| EP1974949A1 (en) | 2007-03-28 | 2008-10-01 | FUJIFILM Corporation | Heat-sensitive transfer image-receiving sheet and production method thereof |
| EP1974948A2 (en) | 2007-03-29 | 2008-10-01 | FUJIFILM Corporation | Image-forming method using heat-sensitive transfer system |
| EP1980409A2 (en) | 2007-03-29 | 2008-10-15 | FUJIFILM Corporation | Heat-sensitive transfer sheet for use in heat-sensitive transfer system and image-forming method using heat-sensitive transfer system |
| EP1974950A1 (en) | 2007-03-30 | 2008-10-01 | FUJIFILM Corporation | Thermal transfer image-receiving sheet and method for producing it |
| EP1974946A1 (en) | 2007-03-30 | 2008-10-01 | FUJIFILM Corporation | Thermal transfer image-receiving sheet and surface condition improver |
| EP1985457A2 (en) | 2007-04-25 | 2008-10-29 | FUJIFILM Corporation | Cardboard cylinder for a heat-sensitive transfer image-receiving sheet, rolled heat-sensitive transfer image-receiving sheet to form a roll shape, and image-forming method |
| EP2030799A2 (en) | 2007-08-29 | 2009-03-04 | Fujifilm Corporation | Heat-sensitive transfer image-receiving sheet and method of producing the same |
| EP2042334A2 (en) | 2007-09-27 | 2009-04-01 | Fujifilm Corporation | Method of producing heat-sensitive transfer image-receiving sheet |
| EP2075139A1 (en) | 2007-12-28 | 2009-07-01 | Fujifilm Corporation | Method of forming image by heat-sensitive transfer system |
| EP2298569A1 (en) | 2009-09-16 | 2011-03-23 | Fujifilm Corporation | Heat-sensitive transfer image-receiving sheet |
| EP2338690A1 (en) | 2009-12-25 | 2011-06-29 | Fujifilm Corporation | Method for forming images using a thermal transfer image-receiving sheet having a lenticular lens |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2632265B2 (en) | 1997-07-23 |
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