JPH0478404B2 - - Google Patents
Info
- Publication number
- JPH0478404B2 JPH0478404B2 JP15833685A JP15833685A JPH0478404B2 JP H0478404 B2 JPH0478404 B2 JP H0478404B2 JP 15833685 A JP15833685 A JP 15833685A JP 15833685 A JP15833685 A JP 15833685A JP H0478404 B2 JPH0478404 B2 JP H0478404B2
- Authority
- JP
- Japan
- Prior art keywords
- plate material
- cutting
- edges
- water
- printing
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 25
- 206010016807 Fluid retention Diseases 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000010008 shearing Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Shearing Machines (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、金属製の平版用版材の裁切断方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for cutting a metal lithographic plate material.
平版印刷は、水と油の化学的反発を利用して平
面の上に、油性インキを付けて印刷するものであ
り、平板は画像部が親油・疏水性に処理され、非
画像部が親水性に処理されている。この平版用版
材としては、アルミニウム板が主として用いら
れ、使用する表面が砂目立て（研磨）等の処理に
より保水性が与えられている。例えば、平版用版
材の一種であるPS版（Pre Sensitized Plate）
では、砂目立て等による保水処理を施してから、
表面に感光材料が塗布されており、これを製版工
程でネガ又はポジに密着して焼付処理を行ない、
これを現像すれば画像部分の感光剤が残り、非画
像部分の感光剤が取り除かれて保水処理された面
が露呈する。
Lithographic printing uses the chemical repulsion of water and oil to print on a flat surface with oil-based ink.The image area of the flat plate is treated to be lipophilic and hydrophobic, and the non-image area is hydrophilic. being sexually processed. As the lithographic plate material, an aluminum plate is mainly used, and the surface used is treated with graining (polishing) or the like to impart water-retentive properties. For example, PS plate (Pre Sensitized Plate) is a type of planographic plate material.
Then, after applying water retention treatment such as graining,
A photosensitive material is coated on the surface, which is then printed in close contact with the negative or positive during the plate-making process.
When this is developed, the photosensitive agent in the image area remains, and the photosensitive agent in the non-image area is removed to expose the water-retentive surface.
従来、平版用版材を裁切断する場合は、第２図
に示すように、上刃１と下刃２とにより挟み付け
て、平版用版材３に剪断力を与えて裁切断するの
が普通である。 Conventionally, when cutting a lithographic plate material, as shown in FIG. 2, the cutting is performed by sandwiching the plate material between an upper blade 1 and a lower blade 2 and applying a shearing force to the lithographic plate material 3. It's normal.
前述した裁切断方法は、切り口にかえり（バ
リ）が発生するため、このかえりに付いた油性イ
ンキが紙に転写されてしまうという問題あつた。
すなわち、版材３は、その使用する表面に砂目立
て等が施されて保水処理面３ａに形成されている
が、剪断力を作用して裁切断すると、４個のエツ
ジ５〜８のうち、エツジ６，７にはかえりが発生
する。このかえりが発生すると、その表面に非保
水処理面が現れるので、製版して印刷に供する
と、この部分に付いた油性インキが紙に転写され
て印刷汚れを発生させる。なお、エツジ５，８に
は、下に丸まつただれが発生するが、この部分は
保水処理面３ａがまわり込んでいるため、保水性
が保たれ、かつ印刷時に紙に強く当たることはな
いから、印刷に不都合を与えることはない。
The above-mentioned cutting method has a problem in that burrs are generated at the cut edges, and oil-based ink attached to the burrs is transferred onto the paper.
That is, the surface of the printing plate 3 used is grained or the like to form a water-retention treated surface 3a, but when cut by applying shearing force, among the four edges 5 to 8, Burrs occur on edges 6 and 7. When this burr occurs, a non-water retaining treated surface appears on the surface, so when the plate is made and used for printing, the oil-based ink attached to this portion is transferred to the paper, causing printing stains. It should be noted that although round eyelash sag occurs at the bottom of the edges 5 and 8, the water retention treated surface 3a wraps around these areas, so water retention is maintained and the edges do not hit the paper strongly during printing. , will not cause any inconvenience to printing.
本発明は、切り口にかえりを発生させることな
く、平版用版材を裁切断することができるように
した平版用版材の裁切断方法を提供することを目
的とするものである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method for cutting a lithographic plate material, which allows the lithographic plate material to be cut without causing burrs at the cut edges.
本発明者は、前記問題点を解決するために、
種々の検討を行つた結果、剪断力の方向を２方向
に変えることにより、エツジの全てがだれとな
り、かえりが全く発生しないことを見い出した。
すなわち、本発明は、例えばカツタを用いて、平
版用版材に剪断力を作用させて、これに段差を形
成し、次に例えばローラにより段差を無くすよう
に押し戻して自己分離するようにしたものであ
る。
In order to solve the above problems, the inventors of the present invention
As a result of various studies, it was discovered that by changing the direction of shearing force in two directions, all the edges become flat and no burrs occur at all.
That is, the present invention uses, for example, a cutter to apply shearing force to the lithographic plate material to form a step thereon, and then, for example, uses a roller to push it back so as to eliminate the step, thereby causing self-separation. It is.
以下、図面を参照して本発明の一実施例につい
て詳細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本発明の裁切断方法を示すものであ
る。平版用版材１０は、親水性金属例えばアルミ
ニウム板が用いられ、Ａに示すように、その両面
又は片面の印刷に使用する面に砂目立て等を施し
て保水処理面１０ａに加工されており、感光剤を
塗布した後に、ＢからＤの工程により、所定のサ
イズに裁切断される。まず、裁切断予定線１１に
沿つて上刃１２と下刃１３とを当て、互いに近接
する方向に移動して剪断力を与える。この剪断力
は、版材１０に亀裂が入る前まで加え、それによ
り版材１０に段差を形成する。次に、Ｃに示すよ
うに、版材１０の両面から平板又はローラ１４，
１５を押し付けて、Ｄに示すように段差が無くな
るように押し戻す。この押し戻しにより、版材１
０に亀裂が入つて版材１０が裁切断予定線１１か
ら裁切断される。
FIG. 1 shows the cutting method of the present invention. The lithographic plate material 10 is made of a hydrophilic metal such as an aluminum plate, and as shown in A, both or one side of the surface used for printing is grained or the like to form a water-retentive surface 10a. After applying the photosensitive agent, it is cut into a predetermined size in steps B to D. First, the upper blade 12 and the lower blade 13 are applied along the cutting line 11 and moved in a direction approaching each other to apply shearing force. This shearing force is applied until the plate material 10 cracks, thereby forming a step in the plate material 10. Next, as shown in C, from both sides of the plate material 10, a flat plate or roller 14,
15 and push it back so that there is no difference in level as shown in D. By this pushing back, the plate material 1
The plate material 10 is cut from the planned cutting line 11 with a crack appearing in the cutting line 11.
裁切断された版材１０は、Ｅに示すように全て
のエツジ１７〜２０が丸まつただれとなり、かえ
りが発生しない。すなわち、従来の裁切断方法で
は、エツジ１８，１９にかえりが発生するが、本
発明では版材１０が押し戻される際に、エツジ１
８，１９が版材１０の中心方向に引き込まれるよ
うに変形しながら自己分離するため、保水処理面
がまわり込んだ形状となる。 As shown in E, all the edges 17 to 20 of the cut plate material 10 are rounded and drooped, and no burrs occur. That is, in the conventional cutting method, burrs occur on the edges 18 and 19, but in the present invention, when the plate material 10 is pushed back, the edges 18 and 19 are burred.
8 and 19 self-separate while being deformed so as to be drawn toward the center of the plate material 10, resulting in a shape in which the water-retention treated surface wraps around.
本発明は、平版用版材に剪断力を作用させて段
差を形成し、次に段差がなくなるように押し戻し
て自己分離させるようにしたから、エツジにかえ
りが発生することなく、全てのエツジが丸めら
れ、かつ保水処理面がまわり込んだ形状になる。
したがつて、従来の裁切断方法のように、保水処
理が施されていない地の部分が露出したかえりが
発生しないから、印刷時にこの部分に油性インキ
が付いて印刷汚れを発生することがない。本発明
はかえりが発生しないから、両面を版面として有
効に利用することができるし、片面品の場合でも
裁切断端面により利用するこができない部分が生
じる如き不便がない。
In the present invention, a shearing force is applied to the lithographic plate material to form a step, and then it is pushed back so that the step disappears to cause self-separation. Therefore, all edges are removed without burrs. It is rounded and has a water-retention treated surface wrapped around it.
Therefore, unlike traditional cutting methods, there is no burr that exposes the part of the fabric that has not been treated with water retention treatment, so there is no chance of oil-based ink getting on this part during printing and causing printing smudges. . Since burrs do not occur in the present invention, both sides can be effectively used as printing plates, and even in the case of single-sided products, there is no inconvenience such as unusable portions due to the cut edges.
第１図は本発明の裁切断方法を示す工程図であ
る。第２図は従来の裁切断方法を示す説明図であ
る。
１……上刃、２……下刃、３……平版用版材、
３ａ……保水処理面、５〜８……エツジ、１０…
…平版用版材、１０ａ……保水処理面、１２……
上刃、１３……下刃、１４，１５……平板、１７
〜２０……保水処理面。
FIG. 1 is a process diagram showing the cutting method of the present invention. FIG. 2 is an explanatory diagram showing a conventional cutting method. 1...Upper blade, 2...Lower blade, 3...Lithographic plate material,
3a...Water retention treated surface, 5-8...Edge, 10...
...Plant material, 10a...Water retention treated surface, 12...
Upper blade, 13... Lower blade, 14, 15... Flat plate, 17
~20...Water retention treatment surface.
Claims (1)
を所定のサイズに裁切断する際に、前記版材の裁
切断予定線に剪断力を作用させて段差を付け、次
にこの段差を押し戻すことにより自己分離させる
ことを特徴とする平版用版材の裁切断方法。1 When cutting a metal lithographic plate material whose surface has been subjected to water retention treatment to a predetermined size, a shearing force is applied to the planned cutting line of the plate material to create a step, and then this step is cut. A method for cutting a lithographic plate material, which is characterized by self-separation by pushing back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15833685A JPS6219315A (en) | 1985-07-19 | 1985-07-19 | Cutting method for printing board material for planography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15833685A JPS6219315A (en) | 1985-07-19 | 1985-07-19 | Cutting method for printing board material for planography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6219315A JPS6219315A (en) | 1987-01-28 |
| JPH0478404B2 true JPH0478404B2 (en) | 1992-12-11 |
Family
ID=15669409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15833685A Granted JPS6219315A (en) | 1985-07-19 | 1985-07-19 | Cutting method for printing board material for planography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6219315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992483A1 (en) | 2005-03-03 | 2008-11-19 | Fujifilm Corporation | Photosensitive planographic printing plate |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2614976B2 (en) * | 1993-07-23 | 1997-05-28 | 富士写真フイルム株式会社 | Photosensitive lithographic printing plate, method for producing the same, and cutting device |
| EP0820840B1 (en) | 1996-07-22 | 2004-05-26 | Fuji Photo Film Co., Ltd. | Method for manufacturing sensitized printing plate |
| US6672193B2 (en) | 1999-01-22 | 2004-01-06 | Fuji Photo Film Co., Ltd. | Method and apparatus for manufacturing sensitized printing plate |
| CN110543081A (en) | 2013-06-18 | 2019-12-06 | 爱克发有限公司 | Method for preparing lithographic printing plate precursor with patterned back layer |
-
1985
- 1985-07-19 JP JP15833685A patent/JPS6219315A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992483A1 (en) | 2005-03-03 | 2008-11-19 | Fujifilm Corporation | Photosensitive planographic printing plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219315A (en) | 1987-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |