JPH0725230B2 - Direct drawing type lithographic printing plate - Google Patents
Direct drawing type lithographic printing plateInfo
- Publication number
- JPH0725230B2 JPH0725230B2 JP12478484A JP12478484A JPH0725230B2 JP H0725230 B2 JPH0725230 B2 JP H0725230B2 JP 12478484 A JP12478484 A JP 12478484A JP 12478484 A JP12478484 A JP 12478484A JP H0725230 B2 JPH0725230 B2 JP H0725230B2
- Authority
- JP
- Japan
- Prior art keywords
- printing plate
- lithographic printing
- water
- recording layer
- surface 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1091—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
- B41N1/14—Lithographic printing foils
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
【発明の詳細な説明】 技術分野 本発明は表面に直接画像が形成される直描型平版印刷用
原板に関する。Description: TECHNICAL FIELD The present invention relates to a direct-writing type lithographic printing plate precursor on which an image is directly formed.
従来技術 直描型平版印刷用原板は鉛筆、ボールペン、タイプライ
ター、ワードプロセツサーの各種プリンター、PPC（普
通紙複写）用電子写真複写機等の手段によつて表面層に
直接製版を行なうタイプのもので、例えば耐水性処理紙
のような耐水性支持体の上にPVAのような親水性樹脂及
びメラミンホルムアルデヒド樹脂、尿素ホルムアルデヒ
ド樹脂、グリオキザール等の耐水化剤とからなる結着剤
と、クレー、酸化亜鉛等の顔料とを主成分とする塗料を
塗布し、乾燥硬化せしめ、耐水性表面記録層を設けるこ
とにより製造されている。しかしこうして得られる平版
印刷用原板においては印刷耐久性を向上させる目的から
耐水化剤の添加量を増加すると、印刷汚れが発生した
り、特に夏季の倉庫保存のように40〜50℃程度の高温環
境下で保存すると、耐水化が進行し印刷汚れを生じる。
そこで耐水化剤を少くすると、画像剥離又はシワが発生
し、印刷耐久性が低下するという欠点があつた。また表
面記録層形成時の塗料に発泡が生じ易く、このため表面
記録層に塗布欠陥を生じることが多かつた。Conventional technology A direct drawing type lithographic printing plate is a type in which a plate is directly made on the surface layer by means of a pencil, a ballpoint pen, a typewriter, various printers of word processors, an electrophotographic copying machine for PPC (plain paper copying), etc. A binder consisting of a hydrophilic resin such as PVA and a water resistant agent such as melamine formaldehyde resin, urea formaldehyde resin and glyoxal on a water resistant support such as water resistant treated paper, and clay. It is manufactured by applying a coating material containing a pigment such as zinc oxide as a main component, drying and curing it, and providing a water resistant surface recording layer. However, in the lithographic printing plate precursor thus obtained, when the amount of the waterproofing agent added is increased for the purpose of improving printing durability, printing stains are generated, and high temperature of about 40 to 50 ° C, especially during storage in a warehouse in summer. If it is stored in an environment, it will become water resistant and cause printing stains.
Therefore, if the amount of the waterproofing agent is reduced, image peeling or wrinkling occurs, and printing durability is deteriorated. Further, when the surface recording layer is formed, the coating material is likely to foam, which often causes coating defects in the surface recording layer.
目 的 本発明の第一の目的は表面記録層の濡れ性を向上するこ
とにより、高温環境下で保存しても印刷汚れのような品
質劣化がなく、しかも画像剥離やシワも発生しない、印
刷耐久性の優れた直描型平版印刷用原板を提供すること
である。The first object of the present invention is to improve the wettability of the surface recording layer, so that even when stored in a high temperature environment, quality deterioration such as print stain does not occur, and image peeling and wrinkles do not occur. An object of the present invention is to provide a direct drawing type lithographic printing plate precursor having excellent durability.
本発明の第二の目的は表面記録層形成時の塗料の発泡を
防止することにより塗布欠陥のない表面記録層を有する
高品質の直描型平版印刷用原板を提供することである。A second object of the present invention is to provide a high quality direct drawing type lithographic printing plate precursor having a surface recording layer free from coating defects by preventing foaming of the coating material when forming the surface recording layer.
構 成 本発明の直描型平版印刷用原板は耐水性支持体上に親水
性樹脂及び耐水化剤よりなる結着剤と顔料とを主成分と
する表面記録層を設けた直描型平版印刷用原板におい
て、表面記録層中に更に一般式 （但しR1は水素原子又はCH3基、R2は水素原子又は−CH2
−CH2−OH基を表わす。）で示されるアセチレングリコ
ールを含有することを特徴そするものである。Composition The direct-drawing lithographic printing plate precursor of the present invention is a direct-drawing lithographic printing plate in which a surface recording layer containing a binder composed of a hydrophilic resin and a water-proofing agent and a pigment as main components is provided on a water-resistant support. In the original plate, the general formula in the surface recording layer (However, R 1 is a hydrogen atom or a CH 3 group, R 2 is a hydrogen atom or —CH 2
It represents a --CH 2 --OH group. ) It is characterized by containing the acetylene glycol represented by.
本発明で使用される前記一般式のアセチレングリコール
は水に対する濡れ性に優れ、印刷時に使用される、エツ
チ液、湿し水に対する版面の濡れ性を向上させ印刷汚れ
を防止する効果がある。またこのアセチレングリコール
は表面記録層用塗料の塗布中における発泡を防ぐ効果も
あり、このため塗布欠陥のない表面記録層を形成するこ
とができる。このようなアセチレングリコールの添加量
は表面記録層重量の0.1％〜10％、好適には0.5％〜５％
である。0.1％以下では濡れの効果が少く、10％以上で
は耐水性の劣化、及び表面層塗布工程においてハジキが
発生し表面層の塗布ムラが発生し易くなる。The acetylene glycol of the general formula used in the present invention has excellent wettability with water, and has the effect of improving the wettability of the plate surface with the etchant and fountain solution used during printing to prevent printing stains. Further, this acetylene glycol also has an effect of preventing foaming during the coating of the coating material for the surface recording layer, so that the surface recording layer having no coating defect can be formed. The amount of such acetylene glycol added is 0.1% to 10%, preferably 0.5% to 5% of the surface recording layer weight.
Is. If it is 0.1% or less, the effect of wetting is small, and if it is 10% or more, the water resistance is deteriorated, and cissing is generated in the surface layer coating step, and coating unevenness of the surface layer is likely to occur.
表面記録層の一方の主成分である結着剤中の親水性樹脂
成分としてはPVA、澱粉類（例えば澱粉、アセチル澱
粉、メチル澱粉、燐酸エステル澱粉等）、セルロース類
（例えばメチルセルロール、エチルセルロース、ヒドロ
キシエチルセルロース、カルボキシメチルセルロース
等）等が例示できる。また耐水化剤としてはメラミンホ
ルムアルデヒド、尿素ホルムアルデヒド等のアミノ樹脂
初期縮合物、グルタルアルデヒド、グリオキザール、変
性ポリアミド樹脂等が使用できる。なお親水性樹脂と耐
水化剤との混合比は使用する親水性樹脂、耐水化剤の種
類により異るが一般に（１〜４）：（４〜１）重量であ
る。The hydrophilic resin component in the binder, which is one of the main components of the surface recording layer, includes PVA, starches (eg starch, acetyl starch, methyl starch, phosphate ester starch, etc.), celluloses (eg methyl cellulose, ethyl cellulose). , Hydroxyethyl cellulose, carboxymethyl cellulose, etc.) and the like. As the waterproofing agent, an amino resin initial condensate such as melamine formaldehyde and urea formaldehyde, glutaraldehyde, glyoxal, and modified polyamide resin can be used. The mixing ratio of the hydrophilic resin and the waterproofing agent varies depending on the types of the hydrophilic resin and waterproofing agent used, but is generally (1-4) :( 4-1) weight.
表面記録層の他方の主成分である顔料としてはクレー、
酸化チタン、酸化亜鉛、硫酸バリウム、シリカ、酸化ア
ルミニウム、炭酸カルシウム等、従来より使用されてい
るものが挙げられる。使用量は顔料により異るが結着
剤：顔料比で1:（0.7〜４）（重量）程度が適当であ
る。As the pigment which is the other main component of the surface recording layer, clay,
Titanium oxide, zinc oxide, barium sulfate, silica, aluminum oxide, calcium carbonate and the like which have been conventionally used can be mentioned. The amount used varies depending on the pigment, but a binder: pigment ratio of about 1: (0.7 to 4) (weight) is suitable.
耐水性支持体としてはスチレン〜ブタジエン共重合体の
ような油溶性樹脂及び必要あれは前述のような顔料で処
理した紙や耐水性プラスチツクフイルム等が挙げられ
る。なお紙を用いた場合は耐水層の反対面にバツクコー
ト層を設けることができる。Examples of the water-resistant support include oil-soluble resins such as styrene-butadiene copolymers and, if necessary, paper treated with the above-mentioned pigments, water-resistant plastic films and the like. When paper is used, a back coat layer can be provided on the surface opposite to the water resistant layer.
本発明の平版印刷用原板を作るには耐水性支持体の耐水
層面に夫々所定量の耐水化剤、親水性樹脂顔料及びアセ
チレングリコールを含む水性分散液を塗布し、加熱処理
して乾燥及び硬化を行なつて付着量１〜30g/m2程度の表
面記録層を設ければよい。To prepare the lithographic printing plate precursor of the present invention, an aqueous dispersion containing a predetermined amount of a water-proofing agent, a hydrophilic resin pigment and acetylene glycol is applied to the water-resistant surface of a water-resistant support, followed by heat treatment to dry and cure. Then, a surface recording layer having an adhesion amount of about 1 to 30 g / m 2 may be provided.
以下に本発明を実施例によつて説明する。The present invention will be described below with reference to examples.
実施例１ 120g/m2の上質紙の片面にスチレン〜ブタジエン共重合
体／クレー（重量比で1/1）の35％水性分散液を塗布乾
燥して付着量10g/m2の耐水層を設けた後、その反対面に
ポリビニルアルコールの６％水溶液を塗布乾燥して付着
量2g/m2の親水性樹脂層を設けた。次に得られた耐水性
支持体の耐水層面に表−１に示す組成を含む20％水性分
散液を塗布し125℃で３分間乾燥及び硬化を行なつて付
着量5g/m2の表面記録層を設けた。Example 1 A 35% aqueous dispersion of styrene-butadiene copolymer / clay (1/1 by weight) was applied to one side of a 120 g / m 2 piece of woodfree paper and dried to form a water resistant layer having an adhesion amount of 10 g / m 2. After being provided, a 6% aqueous solution of polyvinyl alcohol was applied and dried on the opposite surface to provide a hydrophilic resin layer having an adhesion amount of 2 g / m 2 . Then, a 20% aqueous dispersion containing the composition shown in Table 1 was applied to the water resistant layer surface of the resulting water resistant support, dried and cured at 125 ° C for 3 minutes to obtain a surface recording with an adhesion amount of 5 g / m 2 . Layers were provided.
比較のため表−１と同一処方でアセチレングリコールを
添加しないで実施例１と同様にして表面記録層を設け
た。 For comparison, a surface recording layer having the same formulation as in Table 1 was provided in the same manner as in Example 1 without adding acetylene glycol.
得られた平版印刷用原板を50℃で１カ月保存し、水に対
する接触角及び市販のPPC複写機で製版し、オフセツト
印刷した結果を表−２に示す。The obtained lithographic printing plate precursor was stored at 50 ° C. for 1 month, contact angle to water and plate-making with a commercially available PPC copying machine, and offset printing results are shown in Table 2.
表−２から判るように、本発明品は保存後においても印
刷汚れが発生することなく鮮明な印刷物が得られた。 As can be seen from Table-2, the product of the present invention produced a clear printed matter without any print stain even after storage.
実施例２ 実施例１に使用したアセチレングリコールを一般式中
R1:CH3,R2:−CH2−CH2OH（エチレン付加モル数3.5）の
化合物を使用した他は実施例１と同様にして表面記録層
を設けて平版印刷用原板とし、テストした結果、実施例
１と同様に良好な性能を示した。Example 2 The acetylene glycol used in Example 1 was prepared according to the general formula
R 1 : CH 3 , R 2 : -CH 2 -CH 2 OH (Ethylene addition mole number 3.5) was used, and a surface recording layer was provided in the same manner as in Example 1 to prepare a lithographic printing plate precursor and tested. As a result, the same good performance as in Example 1 was exhibited.
効 果 以上のように本発明の平版印刷用原板は表面記録層のエ
ツチ液、湿し水に対する濡れ性が向上した結果、印刷汚
れを防止でき、特に夏季の高温保存に対し、表面層の濡
れ性が変化することなく長期保存に耐え、信頼性を向上
することができる上、表面記録層形成時の塗料の発泡を
防止して塗布欠陥のない表面層を形成することができ
る。As described above, the lithographic printing plate precursor of the present invention has improved wettability of the surface recording layer with the etchant and fountain solution, and as a result, it is possible to prevent printing stains, and especially when the surface layer is stored at high temperature in summer, the surface layer gets wet. It is possible to endure long-term storage without changing the property, improve reliability, and prevent foaming of the paint during formation of the surface recording layer to form a surface layer having no coating defects.
Claims (1)
よりなる結着剤と顔料とを主成分とする表面記録層を設
けた直描型平版印刷用原板において、表面記録中に更に
一般式 （但しR1は水素原子又はCH3基、R2は水素原子又は−CH2
−CH2OH基を表わす。） で示されるアセチレングリコールを含有することを特徴
とする直描型平版印刷用原板。1. A direct-writing lithographic printing plate precursor comprising a water-resistant support and a surface recording layer containing a binder composed of a hydrophilic resin and a water-proofing agent as a main component and a pigment, during surface recording. Further general formula (However, R 1 is a hydrogen atom or a CH 3 group, R 2 is a hydrogen atom or —CH 2
Represents a —CH 2 OH group. ) A direct drawing type lithographic printing plate containing an acetylene glycol represented by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12478484A JPH0725230B2 (en) | 1984-06-18 | 1984-06-18 | Direct drawing type lithographic printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12478484A JPH0725230B2 (en) | 1984-06-18 | 1984-06-18 | Direct drawing type lithographic printing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS613797A JPS613797A (en) | 1986-01-09 |
| JPH0725230B2 true JPH0725230B2 (en) | 1995-03-22 |
Family
ID=14894036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12478484A Expired - Lifetime JPH0725230B2 (en) | 1984-06-18 | 1984-06-18 | Direct drawing type lithographic printing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725230B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2639748B2 (en) * | 1990-10-31 | 1997-08-13 | 富士写真フイルム株式会社 | Photosensitive element and method for producing the same |
| JPH08325280A (en) * | 1995-03-29 | 1996-12-10 | Daihachi Chem Ind Co Ltd | Production of chloroalkyl tribromoneopentyl phosphate |
| JP2865617B2 (en) * | 1996-05-22 | 1999-03-08 | 大八化学工業株式会社 | Method for producing chloroalkyl tribromoneopentyl phosphate |
| US8758885B2 (en) | 2010-03-30 | 2014-06-24 | Kimoto Co., Ltd. | Lithographic printing plate material |
-
1984
- 1984-06-18 JP JP12478484A patent/JPH0725230B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS613797A (en) | 1986-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |