EP0003993B1 - Korrekturmittel für lichtgehärtete Kopierschichten - Google Patents
Korrekturmittel für lichtgehärtete Kopierschichten Download PDFInfo
- Publication number
- EP0003993B1 EP0003993B1 EP79100504A EP79100504A EP0003993B1 EP 0003993 B1 EP0003993 B1 EP 0003993B1 EP 79100504 A EP79100504 A EP 79100504A EP 79100504 A EP79100504 A EP 79100504A EP 0003993 B1 EP0003993 B1 EP 0003993B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solution
- light
- thickening agent
- sensitive layers
- weight
- 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 17
- 239000002562 thickening agent Substances 0.000 claims description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910001868 water Inorganic materials 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- 159000000013 aluminium salts Chemical class 0.000 claims 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000012954 diazonium Substances 0.000 description 2
- BODCCJMIZYPXCB-UHFFFAOYSA-N n-[3-[2-cyanoethyl(2-hydroxyethyl)amino]-4-methoxyphenyl]acetamide Chemical compound COC1=CC=C(NC(C)=O)C=C1N(CCO)CCC#N BODCCJMIZYPXCB-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- LXFQSRIDYRFTJW-UHFFFAOYSA-M 2,4,6-trimethylbenzenesulfonate Chemical compound CC1=CC(C)=C(S([O-])(=O)=O)C(C)=C1 LXFQSRIDYRFTJW-UHFFFAOYSA-M 0.000 description 1
- LXFQSRIDYRFTJW-UHFFFAOYSA-N 2,4,6-trimethylbenzenesulfonic acid Chemical compound CC1=CC(C)=C(S(O)(=O)=O)C(C)=C1 LXFQSRIDYRFTJW-UHFFFAOYSA-N 0.000 description 1
- XXTZKZKZDVXXHC-UHFFFAOYSA-N 2-chloro-4,6-dinitrobenzenediazonium Chemical class [O-][N+](=O)C1=CC(Cl)=C([N+]#N)C([N+]([O-])=O)=C1 XXTZKZKZDVXXHC-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development
-
- 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
Definitions
- the invention relates to a correction agent for light-hardened copying layers, in particular layers based on negative working diazo compounds, which are used primarily for the photomechanical production of printing forms.
- a correction agent which contains water, phosphoric acid, certain organic solvents and optionally finely divided silica. This agent is particularly suitable for positive-working copying layers, it is less effective for negative-working, ie light-curable copying layers. It also has to be handled with care due to its high organic solvent content.
- stripping agents are also commercially available which contain phosphoric acid and potassium permanganate and optionally a thickening agent (binder) such as polyvinyl alcohol in aqueous solution (see, for example, Van der Grinten Bulletin, Vol. 97, December 28, 1967, Venlo-NL, " H et correct Schl vlakdrukvormen", pp. 1-6).
- binder such as polyvinyl alcohol in aqueous solution
- the object of the invention was to provide an effective storable correction agent for light-cured copying layers which contains no organic constituents.
- the invention is based on a correction agent for light-cured copying layers, which contains water, phosphoric acid, potassium permanganate and a thickener.
- the correction means according to the invention is characterized by a content of the thickening agent) being an inorganic salt which is sparingly soluble in the solution and has a density below 4 and which can be hydrated in the solution.
- the thickener should preferably have a density of 2 to 3.
- Suitable suitable salts are preferably alkaline earth metal or aluminum salts.
- the solubility of the thickener in the solution should preferably be less than% by weight.
- Particularly preferred salts are aluminum phosphate and especially calcium sulfate.
- the preferred proportions of the constituents mentioned are 29-60% by weight of water, 14-22% by weight of phosphoric acid, 1-3% by weight of potassium permanganate and 25-56% by weight of thickener.
- the amount of phosphoric acid is always based on anhydrous phosphoric acid.
- the new correction agent works very quickly.
- the areas of the light-cured image template treated with it are dissolved within about 15 to 30 seconds. Its use is particularly advantageous for printing plates whose carrier material is anodized aluminum, since it does not attack the oxide layer to any appreciable extent within the required treatment time.
- manganese dioxide manganese dioxide
- the application is carried out in the usual way by applying a small amount of the viscous mixture with a thin brush to an imagewise exposed and developed negative layer. After about 15 to 30 seconds of exposure, the corrected area is rinsed with plenty of water. The corrected area is hydrophilic and does not take on any color when inked with printing ink.
- Layers based on diazonium salt condensates and optionally polymeric resinous binders, preferably polyurethanes, are preferred as light-curable layers which can be corrected with the correction agent according to the invention.
- Such layers are e.g. described in DE-OS 20 24 244 and 27 39 774 and DE-PS 1214086.
- a small amount of a correction agent of the following composition is applied to a desired location on the hardened image layer with a brush:
- a solution from 95.00 pbw of ethylene glycol monomethyl ether was applied to a plate of anodized aluminum in such an amount that a layer thickness of 1 g / m 2 was obtained after drying. After exposure for 60 seconds under a metal halide lamp of 5000 kW at a distance of 130 cm, the copying layer was developed with the developer specified in Example 1.
- the printing plate was then corrected with the following mixture:
- the treated layer parts were after 20 The treated layer parts were completely removed after 20 seconds of exposure and spraying with water and did not absorb any printing ink.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2808928 | 1978-03-02 | ||
| DE19782808928 DE2808928A1 (de) | 1978-03-02 | 1978-03-02 | Korrekturmittel fuer lichtgehaertete kopierschichten |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0003993A2 EP0003993A2 (de) | 1979-09-19 |
| EP0003993A3 EP0003993A3 (en) | 1979-10-03 |
| EP0003993B1 true EP0003993B1 (de) | 1981-12-30 |
Family
ID=6033325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79100504A Expired EP0003993B1 (de) | 1978-03-02 | 1979-02-21 | Korrekturmittel für lichtgehärtete Kopierschichten |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0003993B1 (enExample) |
| JP (1) | JPS54126102A (enExample) |
| DE (2) | DE2808928A1 (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9710552D0 (en) | 1997-05-23 | 1997-07-16 | Horsell Graphic Ind Ltd | Planographic printing |
| KR20120092673A (ko) * | 2009-11-18 | 2012-08-21 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Ⅱ-ⅵ족 반도체를 위한 신규한 습식 에칭제 및 방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR593592A (fr) * | 1924-06-02 | 1925-08-26 | Produit pour l'enlèvement des taches d'encre et autres au moyen d'une solution unique | |
| JPS5031484B2 (enExample) * | 1971-11-10 | 1975-10-11 | ||
| DE2263957C3 (de) * | 1972-12-29 | 1979-06-21 | Hoechst Ag, 6000 Frankfurt | Korrekturmittel für auf photomechanischem Wege hergestellte Druckformen |
| DE2447225C2 (de) * | 1974-10-03 | 1983-12-22 | Ibm Deutschland Gmbh, 7000 Stuttgart | Verfahren zum Ablösen von positiven Photolack |
-
1978
- 1978-03-02 DE DE19782808928 patent/DE2808928A1/de not_active Withdrawn
-
1979
- 1979-02-21 EP EP79100504A patent/EP0003993B1/de not_active Expired
- 1979-02-21 DE DE7979100504T patent/DE2961636D1/de not_active Expired
- 1979-02-28 JP JP2207179A patent/JPS54126102A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2961636D1 (en) | 1982-02-18 |
| JPS6140982B2 (enExample) | 1986-09-12 |
| DE2808928A1 (de) | 1979-09-06 |
| JPS54126102A (en) | 1979-10-01 |
| EP0003993A3 (en) | 1979-10-03 |
| EP0003993A2 (de) | 1979-09-19 |
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