JPS61163897A - Desensitizing treatment liquid for offset printing - Google Patents

Desensitizing treatment liquid for offset printing

Info

Publication number
JPS61163897A
JPS61163897A JP491985A JP491985A JPS61163897A JP S61163897 A JPS61163897 A JP S61163897A JP 491985 A JP491985 A JP 491985A JP 491985 A JP491985 A JP 491985A JP S61163897 A JPS61163897 A JP S61163897A
Authority
JP
Japan
Prior art keywords
acid
treatment liquid
water
solubility
salts
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
Application number
JP491985A
Other languages
Japanese (ja)
Other versions
JPH0517878B2 (en
Inventor
Hiroaki Suzuki
宏明 鈴木
Masayasu Tanaka
田中 昌保
Masaaki Iwai
岩井 真明
Sadao Osawa
大沢 定男
Nobuyuki Kita
喜多 信行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Tomoegawa Co Ltd
Original Assignee
Tomoegawa Paper Co Ltd
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tomoegawa Paper Co Ltd, Fuji Photo Film Co Ltd filed Critical Tomoegawa Paper Co Ltd
Priority to JP491985A priority Critical patent/JPS61163897A/en
Publication of JPS61163897A publication Critical patent/JPS61163897A/en
Publication of JPH0517878B2 publication Critical patent/JPH0517878B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N3/00Preparing for use and conserving printing surfaces
    • B41N3/08Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Abstract

PURPOSE:To form a hydrophilic film having printability by one-time treatment of a processor in a short time by using a desensitizing treatment liquid composed of an anionic compound capable of forming chelate with zinc ion (a), a carionic surfactant (b), and at least one electrolyte compound selected from inorganic or organic salts having a solubility of 10% or more in water at ordinary temperature (c). CONSTITUTION:As an anionic compound capable of forming chelate with zinc ion, the phosphate of polyhydroxy compounds or their salts are preferably used. As a cationic surfactant, benzyl-type quaternary ammonium salts having benzene ring in the molecule of molecular weights of 100-1,000 are suitable. As an electrolyte compound, ones having a solubility of 10-20wt% or more in water are preferably used, but not for one having solubility of 10wt% or less in water due to the occurrence of crystals when allowed to stand for long periods of time in case where it is used in the treatment liquid. The treatment liquid contains no ferrocyanic and ferricyanic compounds responsible for problems of pollution. The forming speed of the film can thus be greatly hastened and no occurrence of ground staining and net-point tonal crush occurs even by high-speed etching.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は電子写真オフセット印刷版面処理液に関し、シ
アン化合物を一切含有しない、シアンフリーオフセット
印刷用不感脂化処理液に関するものである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electrophotographic offset printing plate surface treatment liquid, and more particularly, to a cyan-free desensitization treatment liquid for offset printing that does not contain any cyan compounds.

〈従来の技術〉 電子写真オフセット印刷原版(以下マスターと称する)
は、酸化亜鉛のごとき光導電性微粉末体を樹脂結着剤中
に分散した感光層を有し、この層上に通常の電子写真操
作を施して、親油性画像を形成させることによって得ら
れる。
<Conventional technology> Electrophotographic offset printing original plate (hereinafter referred to as master)
has a photosensitive layer in which a photoconductive fine powder such as zinc oxide is dispersed in a resin binder, and is obtained by performing ordinary electrophotographic operations on this layer to form a lipophilic image. .

一般にオフセット印刷では、水に湿潤され易い非画線部
(親水性部)と湿潤され難い画線部(親油性部)とから
構成された版が使用されているが、電子写真オフセット
印刷原版は、その画線部が疎水性の光導電層より成って
いるためそのまま印刷を施すと、印刷インキは非画線部
に付着され正常な印刷を行うことができない。
Generally, in offset printing, a plate is used that consists of a non-image area that is easily wetted by water (hydrophilic area) and an image area that is difficult to wet (oleophilic area), but electrophotographic offset printing original plates are Since the image area is made of a hydrophobic photoconductive layer, if printing is performed as is, the printing ink will adhere to the non-image area and normal printing will not be possible.

それ故に印刷に先だって、印刷原版の非画線部を不感脂
化処理して、親水性を付与してやる必要がある。従来よ
りこの種の不感脂化処理液として、フェロシアン塩、フ
ェリシアン塩を主成分とするシアン化合物含有処理液、
アンミンコバルト醋体、フィチン酸及びその誘導体、グ
アニジン誘導体を主成分としたシアンフリー処理液が提
起されていしかしながら、これらの処理液は充分満足出
来る処理液とは言えない。即ち、前者のフェロシアン塩
、フェリシアン塩含有処理液の場合は、不感脂化力は強
く、強固な親水性被膜形成能を持ち、成膜速度も速い利
点はあるが、反面フェロシアンイオン、フェリシアンイ
オンは熱や光に対し不安定で光にさらすと着色し、沈澱
を生じて不感脂化力が弱まり、さらにシアンイオン(c
N)を含有することで遊離シアンとして検出されること
により排水等、公害の面において種々の問題を提起する
欠点を持っている。
Therefore, prior to printing, it is necessary to desensitize the non-image areas of the printing plate to impart hydrophilic properties. Traditionally, this type of desensitizing treatment liquid includes ferrocyanate, a cyanide compound-containing treatment liquid containing ferricyanide as a main component,
Cyanide-free processing liquids containing ammine cobalt base, phytic acid and its derivatives, and guanidine derivatives as main components have been proposed, but these processing liquids cannot be said to be fully satisfactory processing liquids. That is, in the case of the former treatment solution containing ferrocyanide salt or ferricyanide salt, it has the advantage of having a strong desensitizing power, the ability to form a strong hydrophilic film, and a fast film formation rate. Felicyan ions are unstable to heat and light, and when exposed to light, they become colored and precipitate, weakening their desensitizing ability.
Since it contains N), it is detected as free cyanide, which has the disadvantage of posing various problems in terms of pollution, such as drainage.

一方、こうした点を考慮して後者のような不感脂化剤を
主成分としたシアンフリー処理液が提案されているが、
これらによっても未だ充分満足すべき平版印刷原版を得
る処理液とは言えない。具体的には、前者に比べ成膜速
度が遅く、プロセッサーを用いたエツチング方式では1
回通しで直ちに印刷可能な物理強度の高い親水性被膜形
成が出来ず、地汚れや網点階調につぶれを生じる欠点を
有している。
On the other hand, taking these points into consideration, cyanide-free processing liquids containing desensitizing agents as the main ingredients have been proposed;
Even with these factors, it cannot be said that the processing solution is capable of producing a fully satisfactory lithographic printing original plate. Specifically, the film formation speed is slower than the former, and the etching method using a processor has a
It is not possible to form a hydrophilic film with high physical strength that can be immediately printed by passing through the process, and it has the disadvantage of causing background smearing and halftone dot gradation.

従来、イノジットヘキサリン酸エステル及びその金属誘
導体は金属とキレート化合物を形成することは周知の通
りで、オフセット印刷原版の不感脂化剤としてすでに種
々提供されている。
It is well known that inosit hexaphosphate and its metal derivatives form chelate compounds with metals, and various types of desensitizing agents for offset printing plates have already been provided.

しかしこれらは、いずれも成膜速度が遅く、プロセッサ
ー1回の処理で印刷可能な親水性被膜が形成されず、こ
のためインキ分離性が悪く、地汚れや網点階調のつぶれ
を生じ又印刷環境の影響をうけやすく低湿度ではプロセ
ッサー2回で地汚れが発生する欠点がある。
However, all of these have slow film formation speeds, and a printable hydrophilic film cannot be formed in a single processor process.As a result, ink separation is poor, causing background smudges and halftone gradations, and printing. It is easily affected by the environment and has the disadvantage that under low humidity conditions, scumming occurs after two processor cycles.

本発明者らは、先に特公昭58−5799でイノジット
ヘキサリン酸エステルのナトリウムフイテート、カリウ
ムフィテート、カルシウムフイテートなどの1価、2価
の金属塩と水溶性カチオンポリマーとのイオンコンプレ
ックスを提案したが、この場合は保水性は向上したが、
満足すべきエツチングスピードが得られないという欠点
を有していた。
The present inventors previously reported in Japanese Patent Publication No. 58-5799 that ions of monovalent and divalent metal salts such as sodium phytate, potassium phytate, and calcium phytate of Inozite hexaphosphate and a water-soluble cationic polymer were obtained. We proposed a complex, but in this case the water retention improved, but
This method has the disadvantage that a satisfactory etching speed cannot be obtained.

〈発明が解決しようとする問題点〉 本発明は、上記の事情に鑑みてなされたものであり、皮
膜速度が早く、プロセッサー1回の処理で印刷可能な親
水性被膜を形成することが出来るシアンフリーオフセッ
ト印刷用不感脂化処理液を提供するものである。
<Problems to be Solved by the Invention> The present invention has been made in view of the above-mentioned circumstances. The present invention provides a desensitizing liquid for free offset printing.

く問題点を解決するための手段〉 本発明は(a)亜鉛イオンとキレート形成能を有するア
ニオン化合物、(b)カチオン界面活性剤、および(c
)無機または有機の塩から選ばれた少なくとも1種の常
温における水に対する溶解度が105以上の電解質化合
物からなるオフセット印刷用不感脂化処理液である。
Means for Solving the Problems> The present invention comprises (a) an anionic compound having the ability to form a chelate with zinc ions, (b) a cationic surfactant, and (c)
) A desensitizing treatment liquid for offset printing comprising at least one electrolyte compound selected from inorganic or organic salts and having a solubility in water at room temperature of 105 or more.

本発明の処理液に用いる亜鉛イオンとキレート形成能を
有する水溶性アニオン化合物としては、特開昭57−1
99694号明細書、特公昭45−24609号明細書
、特開昭51−103501号明細書や特開昭54−1
0003号明細書に記載されているフィチン酸またはそ
の金属塩、特願昭58−130348号明細書に記載さ
れているフィチン酸アンモニウム塩または有機アミン塩
、特開昭53−83806号明細書、特開昭53−83
807号明細書、特開昭53−109701号明細書、
特開昭53−127002号明細書、特開昭53−12
7003号明細書や特開昭54−44901号明細書に
記載されている1位または4位の水酸基が不活性化され
ているイノジットヘキサリン酸エステル誘導体、ビニル
ホスホン酸(塩)重合体又は共重合体、リン酸セルロー
ス(塩)、2−ヒドロキシエチル〈メタ)アクリル酸エ
ステル重合体又は共重合体のリン酸エステル(塩)、2
−ヒドロキシプロピル(メタ)アクリル酸エステル重合
体又は共重合体のリン酸エステル(塩)、ポリアクリル
酸(塩)、ポリメタアクリル酸(塩)、ポリスチレンス
ルホン酸(塩)、ポリビニルアルコール硫酸エステル、
ポリグルタミン酸(塩)、アルギン酸(塩)、カルボキ
シメチルセルロース、2−アクリルアミド−2−メチル
プロパンスルホン酸重合体(塩)、又は共重合体(塩)
等があげられるが、これらの中でも特にポリヒドロキシ
化合物のリン酸エステル又はその塩が好ましい。
The water-soluble anion compound having the ability to form a chelate with zinc ions used in the treatment solution of the present invention includes JP-A-57-1
99694 specification, Japanese Patent Publication No. 45-24609, Japanese Patent Application Publication No. 103501/1983, and Japanese Patent Application Publication No. 54-1
Phytic acid or its metal salt described in the specification of No. 0003, phytic acid ammonium salt or organic amine salt described in the specification of Japanese Patent Application No. 58-130348, Phytic acid ammonium salt or organic amine salt described in the specification of Japanese Patent Application No. 53-83806, Kaisho 53-83
807 specification, JP-A-53-109701 specification,
JP-A-53-127002, JP-A-53-12
Inozite hexaphosphate derivatives, vinylphosphonic acid (salt) polymers or vinylphosphonic acid (salt) polymers in which the 1- or 4-position hydroxyl group is inactivated, as described in Specification No. 7003 and Japanese Patent Application Laid-Open No. 54-44901. Copolymer, cellulose phosphate (salt), 2-hydroxyethyl (meth)acrylic acid ester polymer or copolymer phosphate ester (salt), 2
- Hydroxypropyl (meth)acrylic acid ester polymer or copolymer phosphate ester (salt), polyacrylic acid (salt), polymethacrylic acid (salt), polystyrene sulfonic acid (salt), polyvinyl alcohol sulfate ester,
Polyglutamic acid (salt), alginic acid (salt), carboxymethylcellulose, 2-acrylamide-2-methylpropanesulfonic acid polymer (salt), or copolymer (salt)
Among these, phosphoric acid esters of polyhydroxy compounds or salts thereof are particularly preferred.

本発明の処理液に用いるカチオン界面活性剤は■   
   O 具体的には、RN (cH3)3・CI(但しRは炭素
・CI  (但しRは炭素数3以上のアルキル基)、0
1e(但しRは炭素数5以上のアルキル基)、C,、H
2,C0NH(cH2)、Ne(c1,>2COOC2
85−CI 、CH2= CHCO2CH2CH2N 
(cH3)3・CH3 (cH3)3・cHQsoF、 CH3 1e      e CH2=CCON)ICH2CH2N (cH,>3・
C11CH。
The cationic surfactant used in the treatment liquid of the present invention is
O Specifically, RN (cH3)3・CI (where R is carbon・CI (however, R is an alkyl group having 3 or more carbon atoms), 0
1e (where R is an alkyl group having 5 or more carbon atoms), C,, H
2,C0NH(cH2),Ne(c1,>2COOC2
85-CI, CH2= CHCO2CH2CH2N
(cH3)3・CH3 (cH3)3・cHQsoF, CH3 1e e CH2=CCON)ICH2CH2N (cH,>3・
C11CH.

1          ■ CH2=CC0NHCH2CHEN (cH3)3・、
            CHQ sob、なとがある
1 ■ CH2=CC0NHCH2CHEN (cH3)3・,
There is a CHQ sob.

それらの中でも分子中にヘンゼン環を有する分子量約1
00〜1000の、ヘンシル型4級アンモニウム塩が好
適である。
Among them, the molecular weight is about 1, which has a Hensen ring in the molecule.
00 to 1000, Henschel type quaternary ammonium salts are preferred.

また本発明の処理液に使用する水に対する溶解度が10
%以上の有機又は無機の電解化合物としでは、ギ酸、修
酸、硫酸、硝酸、スルファミン酸、リン酸、ポリリン酸
、又は炭酸のアルカリ金属酸、アルカリ土金属塩、アン
モニウム塩又は有機アミン塩がある。具体的にはA g
 N O3、Ba(Not)2、Ba(303NH2)
、Ca(NOi)z、Ca(SOaNH2)2、KHC
O3、K)ISO,、K N Os、LiNO3、M 
g CO3、M g S Oa、NH,NO,、(NH
,>2So、、NH,SO,NH2、NaCO3、NA
NO3、Na5O,NH2、HCOONa、HCOOK
Furthermore, the solubility in water used in the treatment liquid of the present invention is 10.
% or more of organic or inorganic electrolytic compounds include alkali metal acids, alkaline earth metal salts, ammonium salts or organic amine salts of formic acid, oxalic acid, sulfuric acid, nitric acid, sulfamic acid, phosphoric acid, polyphosphoric acid, or carbonic acid. . Specifically, A g
N O3, Ba(Not)2, Ba(303NH2)
, Ca(NOi)z, Ca(SOaNH2)2, KHC
O3, K) ISO,, K N Os, LiNO3, M
g CO3, M g S Oa, NH, NO,, (NH
,>2So, ,NH,SO,NH2,NaCO3,NA
NO3, Na5O, NH2, HCOONa, HCOOK
.

Na0OCCOONa1KOOCCOONa 、炭酸グ
アニジン、炭酸アンモニウム等をあげる事が出来る。こ
の他、亜硝酸塩や亜硫酸塩のごとく還元性の塩も酸化さ
れて硝酸塩や硫酸塩にかわる場合は包含される。これら
の電解質化合物の水に対する溶解度は10%重量以下で
は処理液とした場合に長期放置で結晶を生じ好ましくな
い。好ましくは             :水に対す
る溶解度が20重量%以上のものである。
Examples include Na0OCCOONa1KOOCCOONa, guanidine carbonate, and ammonium carbonate. In addition, reducing salts such as nitrites and sulfites are also included if they are oxidized and converted to nitrates or sulfates. If the solubility of these electrolyte compounds in water is less than 10% by weight, crystals will form if left for a long period of time when used as a treatment solution, which is undesirable. Preferably: Solubility in water is 20% by weight or more.

本発明は特定の酸の塩からなる電解質化合物をアニオン
化合物とカチオン界面活性剤のイオンコンプレックスに
添加する事によってエツチングスピードの高い処理液と
したものである。
The present invention provides a processing solution with a high etching speed by adding an electrolyte compound consisting of a salt of a specific acid to an ionic complex of an anionic compound and a cationic surfactant.

本発明の処理液を構成する上記物質の使用量は、処理液
1000重量部の中に亜鉛イオンとキレート形成能を有
する水溶性アニオン化合物が10〜200重量部、より
好ましくは40〜75重量部、電解質化合物が20〜1
50重量部、より好ましくは40〜100重量部及びカ
チオン界面活性剤が0.2〜20重量部、より好ましく
は1〜IO重量部である。これらの化合物をイオン交換
水又は水道水に溶解させて本処理液とする。溶解の順序
はとくに制限されないが、好ましくは水に亜鉛イオンと
キレート形成能を有する水溶性アニオン化合物を溶解さ
せた後、電解質化合物を加え、その後にカチオン界面活
性剤を加える。処理液には上記成分の外にPH調整剤や
沈澱防止剤として、ギ酸、酢酸、プロピオン酸、酪酸、
イソ酪酸、吉草酸、イソ吉草酸、シュウ酸、マロン酸、
コハク酸、グルタミン酸、マレイン酸、フマル酸、シト
ラコン酸、イタコン酸、トリカルバリル酸、プロパン−
1,1,2,3,−テトラカルボン酸、ブタン−1,2
,3,4,−テトラカルボン酸、グリコール酸、チオグ
リコール酸、乳酸、B−ヒドロキシプロピオン酸、リン
ゴ酸、クエン酸、グルコン酸、ピルビン酸、ジグリコー
ル酸、チオグリコール酸、メルカプトコハク酸、サルチ
ル酸、タイロン、ピリジン−2,3−ジカルボン酸、イ
ミノジ酢酸、ヒドロキシエチルイミノジ酢酸、ホスホノ
メチルイミノジ酢酸、ニトリロトリ酢酸、エチレンジア
ミンテトラ酢酸、エチレンジアミンテトラプロピオン酸
、シクロヘキサン−1,2−ジアミンテトラ酢酸、ジエ
チレントリアミンペンタ酢酸、グリコールエーテルジア
ミンテトラ酢酸、トリメチレンテトラアミンへキサ酢酸
、グリシン、サルコシン、B−アラニン、α−アミノ酪
酸、アスパラギン酸、グルタミン酸、リン酸、ビロリン
酸、ヘキサメタ酸、ポリリン酸、芳香族スルホン酸(た
とえばトルエンスルホン酸、ベンゼンスルホン酸、を−
ブチルナフタレンスルホン酸、ドデシルジフエニルエー
テルジスルホン酸、等の酸やその塩、湿潤剤としてエチ
レングリコール、ジエチレングリコール、トリエチレン
グリコール、ポリエチレングリコール、フェニルグリコ
ール、プロピレングリコール、ソルビトール、グリセリ
ン、アラビアゴム等、防腐剤としてサリチル酸、フェノ
ールパラ安息香酸ブチル、デヒドロ酢酸ナトリウム、4
−イソチアゾリン−3−イオン化合物等、その他添加剤
として水溶性染料、コロイダルシリカ、アミン類など適
当量添加して使用する事が出来る。
The amount of the above-mentioned substances constituting the treatment liquid of the present invention used is 10 to 200 parts by weight, more preferably 40 to 75 parts by weight of the water-soluble anion compound having the ability to form a chelate with zinc ions in 1000 parts by weight of the treatment liquid. , the electrolyte compound is 20-1
50 parts by weight, more preferably 40 to 100 parts by weight and 0.2 to 20 parts by weight of cationic surfactant, more preferably 1 to IO parts by weight. These compounds are dissolved in ion-exchanged water or tap water to prepare the main treatment liquid. Although the order of dissolution is not particularly limited, preferably, after dissolving zinc ions and a water-soluble anionic compound having chelate-forming ability in water, the electrolyte compound is added, and then the cationic surfactant is added. In addition to the above ingredients, the treatment solution contains formic acid, acetic acid, propionic acid, butyric acid, as a pH adjuster and anti-settling agent.
Isobutyric acid, valeric acid, isovaleric acid, oxalic acid, malonic acid,
Succinic acid, glutamic acid, maleic acid, fumaric acid, citraconic acid, itaconic acid, tricarballylic acid, propane-
1,1,2,3,-tetracarboxylic acid, butane-1,2
, 3,4,-tetracarboxylic acid, glycolic acid, thioglycolic acid, lactic acid, B-hydroxypropionic acid, malic acid, citric acid, gluconic acid, pyruvic acid, diglycolic acid, thioglycolic acid, mercaptosuccinic acid, salutyl Acid, Tyrone, pyridine-2,3-dicarboxylic acid, iminodiacetic acid, hydroxyethyliminodiacetic acid, phosphonomethyliminodiacetic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid, ethylenediaminetetrapropionic acid, cyclohexane-1,2-diaminetetraacetic acid , diethylenetriaminepentaacetic acid, glycol ether diamine tetraacetic acid, trimethylenetetraamine hexaacetic acid, glycine, sarcosine, B-alanine, α-aminobutyric acid, aspartic acid, glutamic acid, phosphoric acid, birophosphoric acid, hexametaic acid, polyphosphoric acid, aroma group sulfonic acids (e.g. toluenesulfonic acid, benzenesulfonic acid,
Acids and their salts such as butylnaphthalene sulfonic acid and dodecyl diphenyl ether disulfonic acid, wetting agents such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, phenyl glycol, propylene glycol, sorbitol, glycerin, gum arabic, etc., preservatives as salicylic acid, butyl phenol parabenzoate, sodium dehydroacetate, 4
-Isothiazoline-3-ion compounds and other additives such as water-soluble dyes, colloidal silica, and amines can be added in appropriate amounts.

処理液を実施するに当たり、処理液のP)I値は3〜6
の範囲にする事が好ましい。又、水で希釈して湿し水と
しても使用出来る。
When implementing the treatment liquid, the P)I value of the treatment liquid is 3 to 6.
It is preferable to keep it within the range of . It can also be used as a dampening solution by diluting it with water.

〈実施例〉 以下実施例、比較例にて本発明の詳細な説明する。<Example> The present invention will be explained in detail below using Examples and Comparative Examples.

実施例1 水             1000重量部フィチン
酸アンモニウム塩   100−I(50%水溶液) (N)(、)2So、80ツメ 10  ・I サリチルリチル酸         1 −・グリセリ
ン         201)−・アンモニア水を加え
PH4,2に調整する。
Example 1 Water 1000 parts by weight Ammonium salt phytate 100-I (50% aqueous solution) (N) (,) 2So, 80 pieces 10 ・I Salicyrrhizylic acid 1 - Glycerin 201) - Add ammonia water to pH 4.2 adjust.

実施例2 水             1000重量部フィチン
酸マグネシウム    100−・(50%水溶液) K2S0.            50 −・C,,
8,3N00C105= ジエチレントリアミンペンタ酢酸 10 ・・エチレン
グリコール      l0Q−Iデヒドロ酢酸ナトリ
ウム       l−Iアンモニア水を加えPH4,
2に調整する。
Example 2 Water 1000 parts by weight Magnesium phytate 100- (50% aqueous solution) K2S0. 50-・C,,
8,3N00C105= Diethylenetriaminepentaacetic acid 10...Ethylene glycol l0Q-I Sodium dehydroacetate l-I Add aqueous ammonia and pH 4,
Adjust to 2.

実施例3 水             1000重量部ポリビニ
ールアルコール硫酸エステル 1oo−・ NH,503NH250〃 CH。
Example 3 Water 1000 parts by weight Polyvinyl alcohol sulfate ester 1oo-NH, 503NH250 CH.

CHz=CCONHCH2CH2N (cH3)3CI
フェノールパラ安息香酸ブチル   0,5 〃ポリア
クリル酸ナトリウム   100 〃グリコール酸を加
えPH4,5に調整する。
CHz=CCONHCH2CH2N (cH3)3CI
Butyl phenol parabenzoate 0.5 Sodium polyacrylate 100 Add glycolic acid and adjust the pH to 4.5.

実施例4 水             1000重量部ビニルホ
スホン酸重合体    100−・(40%水溶液) 1.2−ベンゾイソチアゾロン−3−オン 0.5−・
グリセリン         100−・リン酸を加え
PH4,5に調整する。
Example 4 Water 1000 parts by weight Vinylphosphonic acid polymer 100-. (40% aqueous solution) 1.2-Benzisothiazolone-3-one 0.5-.
Glycerin 100- Add phosphoric acid and adjust the pH to 4.5.

比較例1 水             1000重量部フィチン
酸アンモニウム    100 〃(50%水溶液) (N)(、)2S0.           80 −
・サリチル酸            1 −・グリセ
リン         200−・リン酸を加えてPH
4,20に調整する。
Comparative Example 1 Water 1000 parts by weight Ammonium phytate 100 (50% aqueous solution) (N) (,)2S0. 80-
・Salicylic acid 1-・Glycerin 200-・Add phosphoric acid to pH
Adjust to 4.20.

比較例2 水                1000−・フィ
チン酸マグネシウム    100−I(50%水溶液
) K2SO450〃 e Φ C8H,7S Os  Na            
    l  O”グリセリン         20
0−Iアンモニア水を加えP)14.5に調整する。
Comparative Example 2 Water 1000- Magnesium phytate 100-I (50% aqueous solution) K2SO450 e Φ C8H,7S Os Na
l O” Glycerin 20
Add 0-I ammonia water and adjust to P) 14.5.

比較例3 水             1000重量部2−ヒド
ロキシメタアクリル酸 100 //エステル重合体(
40%水溶液) NH,NO380〃 C,,H,,N■(cH3>2CH2COO”  ? 
 ”トルエンスルホン酸       10 //グリ
セリン         100−・NaOHを加えP
H4,5に調整する。
Comparative Example 3 Water 1000 parts by weight 2-hydroxymethacrylic acid 100 // Ester polymer (
40% aqueous solution) NH,NO380 C,,H,,N■(cH3>2CH2COO”?
``Toluenesulfonic acid 10 // Glycerin 100- Add NaOH and P
Adjust to H4,5.

酸化亜鉛〜樹脂分散系の電子写真感光材料に、常法に従
い画像形成後、上記の処理液で各々高速エツチング処理
してオフセット原板とし、湿し水に各々の処理液を水で
5倍に希釈したものを用いて印刷を行った。その結果を
下表に示す。
After forming an image on an electrophotographic light-sensitive material containing a zinc oxide to resin dispersion system according to a conventional method, high-speed etching is performed using each of the above processing solutions to obtain an offset original plate, and each processing solution is diluted 5 times with water in a dampening solution. Printing was performed using the The results are shown in the table below.

表から判るように実施例1〜4に示した本発明の処理液
は成膜速度が早いので高速エツチング処理しても100
00枚以上の印刷で、印刷物には地汚れもなくインキ付
着性も良好で網点階調のつぶれのない鮮明な画像が得ら
れた。しかしカチオン物質を含まない比較例11および
陰イオン性活性剤、両性イオン性の活性剤を用いた比較
例2〜3は1枚目から地汚れを生じ、インキ分離性も悪
く印刷不可能であった。
As can be seen from the table, the processing solutions of the present invention shown in Examples 1 to 4 have a fast film formation rate, so even during high-speed etching processing,
After printing 00 or more sheets, the printed matter had no background smudges, had good ink adhesion, and had clear images without halftone gradations. However, in Comparative Example 11, which did not contain a cationic substance, and Comparative Examples 2 and 3, which used an anionic activator and an amphoteric activator, background smear occurred from the first sheet and the ink separation was poor, making printing impossible. Ta.

〈発明の効果〉 以上説明した如く本発明のオフセット印刷用不感脂化処
理液は、公害問題を内在するフェロシアン、フェリシア
ン化合物を含むことな(、成膜速度が著しく向上したの
で高速エツチング処理によっても地汚れや網点階調のつ
ぶれの出ないすぐれたオフセット印刷が可能となった。
<Effects of the Invention> As explained above, the desensitization treatment liquid for offset printing of the present invention does not contain ferrocyan and ferricyanide compounds that have inherent pollution problems (and the film formation rate has been significantly improved, making it suitable for high-speed etching treatment). This has made it possible to perform excellent offset printing without background smudges or halftone gradations.

Claims (1)

【特許請求の範囲】 下記(a)、(b)および(c)を有効成分とすること
を特徴とするシアンフリーオフセット印刷用不感脂化処
理液。 (a):亜鉛イオンとキレート形成能を有するアニオン
化合物。 (b):カチオン界面活性剤。 (c):無機または有機の塩から選ばれた少なくとも1
種の常温における水に対する溶解度が 10重量%以上の電解質化合物。
[Scope of Claims] A desensitizing liquid for cyan-free offset printing, characterized by containing the following (a), (b) and (c) as active ingredients. (a): An anionic compound having the ability to form a chelate with zinc ions. (b): Cationic surfactant. (c): at least one selected from inorganic or organic salts
An electrolyte compound having a solubility in water of 10% by weight or more at room temperature.
JP491985A 1985-01-17 1985-01-17 Desensitizing treatment liquid for offset printing Granted JPS61163897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP491985A JPS61163897A (en) 1985-01-17 1985-01-17 Desensitizing treatment liquid for offset printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP491985A JPS61163897A (en) 1985-01-17 1985-01-17 Desensitizing treatment liquid for offset printing

Publications (2)

Publication Number Publication Date
JPS61163897A true JPS61163897A (en) 1986-07-24
JPH0517878B2 JPH0517878B2 (en) 1993-03-10

Family

ID=11597021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP491985A Granted JPS61163897A (en) 1985-01-17 1985-01-17 Desensitizing treatment liquid for offset printing

Country Status (1)

Country Link
JP (1) JPS61163897A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160691A (en) * 1987-12-18 1989-06-23 Oji Paper Co Ltd Composition for desensitizing lithography

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615397A (en) * 1979-07-16 1981-02-14 Hoechst Co American Water flat board finishing agent and method of finishing developed flat board
JPS56117691A (en) * 1980-02-21 1981-09-16 Ricoh Co Ltd Insensitive aliphatization of flat printing plate
JPS572796A (en) * 1980-06-10 1982-01-08 Tomoegawa Paper Co Ltd Processing liquid for offset printing
JPS5720394A (en) * 1980-07-11 1982-02-02 Tomoegawa Paper Co Ltd Insensitive fatting treating liquid for offset printing block
JPS5729496A (en) * 1980-07-29 1982-02-17 Ricoh Co Ltd Treating liquid for lithographic printing plate
JPS57199694A (en) * 1981-06-03 1982-12-07 Oji Paper Co Ltd Treating liquid for planographic printing plate
JPS60236796A (en) * 1984-05-10 1985-11-25 Ricoh Co Ltd Desensitizing liquid for planography

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615397A (en) * 1979-07-16 1981-02-14 Hoechst Co American Water flat board finishing agent and method of finishing developed flat board
JPS56117691A (en) * 1980-02-21 1981-09-16 Ricoh Co Ltd Insensitive aliphatization of flat printing plate
JPS572796A (en) * 1980-06-10 1982-01-08 Tomoegawa Paper Co Ltd Processing liquid for offset printing
JPS5720394A (en) * 1980-07-11 1982-02-02 Tomoegawa Paper Co Ltd Insensitive fatting treating liquid for offset printing block
JPS5729496A (en) * 1980-07-29 1982-02-17 Ricoh Co Ltd Treating liquid for lithographic printing plate
JPS57199694A (en) * 1981-06-03 1982-12-07 Oji Paper Co Ltd Treating liquid for planographic printing plate
JPS60236796A (en) * 1984-05-10 1985-11-25 Ricoh Co Ltd Desensitizing liquid for planography

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160691A (en) * 1987-12-18 1989-06-23 Oji Paper Co Ltd Composition for desensitizing lithography

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