CA2068589A1 - Offset printing plate and process for the manufacture thereof - Google Patents
Offset printing plate and process for the manufacture thereofInfo
- Publication number
- CA2068589A1 CA2068589A1 CA 2068589 CA2068589A CA2068589A1 CA 2068589 A1 CA2068589 A1 CA 2068589A1 CA 2068589 CA2068589 CA 2068589 CA 2068589 A CA2068589 A CA 2068589A CA 2068589 A1 CA2068589 A1 CA 2068589A1
- Authority
- CA
- Canada
- Prior art keywords
- aluminium
- offset printing
- electrolyte
- coating
- treatment
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007645 offset printing Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- 239000004411 aluminium Substances 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 6
- 239000004111 Potassium silicate Substances 0.000 claims abstract description 6
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- 229910052913 potassium silicate Inorganic materials 0.000 claims abstract description 6
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 6
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 239000000872 buffer Substances 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000000080 wetting agent Substances 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 abstract description 3
- 238000005524 ceramic coating Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000007639 printing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000002048 anodisation reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RLQWHDODQVOVKU-UHFFFAOYSA-N tetrapotassium;silicate Chemical compound [K+].[K+].[K+].[K+].[O-][Si]([O-])([O-])[O-] RLQWHDODQVOVKU-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 150000003751 zinc Chemical class 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
- B41N3/03—Chemical or electrical pretreatment
- B41N3/038—Treatment with a chromium compound, a silicon compound, a phophorus compound or a compound of a metal of group IVB; Hydrophilic coatings obtained by hydrolysis of organometallic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
A B S T R A C T
Offset printing plate and process for the manufacture thereof.
The plate, in particular an aluminium plate, is provided with a ceramic coating of sodium and/or potassium silicate, which is 0.5-4 µm thick and has a roughness value (Ra) of 0,3-0.9 µm. An additional coating of light sensitive lacquer is applied in a standard manner on this coating. The process according to the invention consists of the electrolytic treatment of the aluminium plate with direct current and in a electrolyte containing sodium and/or potassium silicate.
Offset printing plate and process for the manufacture thereof.
The plate, in particular an aluminium plate, is provided with a ceramic coating of sodium and/or potassium silicate, which is 0.5-4 µm thick and has a roughness value (Ra) of 0,3-0.9 µm. An additional coating of light sensitive lacquer is applied in a standard manner on this coating. The process according to the invention consists of the electrolytic treatment of the aluminium plate with direct current and in a electrolyte containing sodium and/or potassium silicate.
Description
2~68~89 , OFFSET PRINTING PLATE AND PROCESS FOR THE MANUFACTURE THEREOF
D E S C R I P T I O N
Back~round of the Invention F eld_o~ e_Invention The invention concerns a surface kreatment of aluminium sheets whose advantages and properties make them particularly suitable for the manufacture of presensitized offset printing plates of all kinds and of the so-called wipe-on plates. The invention concerns in particular an offset printing plate which can be manufactured with this treatment and a process for the manufacture of these plates.
~eference of the Prior Art Conventional offset printing plates manufactured according to the state of the art consist of pure aluminium or an aluminium alloy and require a multi-step surface treatment prior to the application of the light sensitive coatings. The millfinished aluminium surface is brushgrained and/or electrograined to provids a better adhesion of the photolacquer and the required damping water for printing.
Subsequent anodization provides better abrasion resistance and hereby better durability of the plates in the printing press. A typical treatment consists of: etching/degreasing in alkaline solution - pickling in acid - electrograinin3 with alternating current - anodizing with direct current-posttreatment by dipping in acid, the so-called "sealing". In many cases this is proceeded by a brushgraining using a brush and aqueous abradant suspension. A thorough rinsing with water is required between the two treatment stages and at the finish. Plates that are to be subsequently coated with positive lacquer, negative lacquer, or ara to be provided with light sensitive coatings for electrophotography or for the silver salt process require a surface treatment that is specifically suited to the respective case.
Summary of the Invention The object of the invention is to create an aluminium surface of at least equivalent quality to that created by conventional processes, but with considerably less process stages and expenditure in material and energy.
The offset printing plate referred to comprises a 2 ~ 8 9 sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, at least one of the surfaces of said sheetlike member containing a fixed coating of sodium and/or potassium silicate in a thickness of from 0.5 to 4 ~m at a mean roughness value (Ra ) ranging from 0.3 to 0.9 ~m.
According to a further feature of the invention, said silicate coating is covered by an additional coating formed:
by a liyht sensitive positive or negative acting photolacquer, by an electrophotographic acting photocoating or by a silver salt sensitized photocoating of standard type.
The said base material may ~e polyester, acetata, a laminated polymer, a waterproofed paper or other appropriate material.
In turn, the said alloy may comprise magnesium, iron, titanium or other metal.
Tests surprisingly showed that a single stage surface treatment of the aluminium was sufficient to meet the technical and quality requirements for offset printing plates.
This treatment is characterized in that a sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, is subjected to an electrolytic treatment in an electrolyte containing sodium and/or potassium silicate in a concentration of 4-30 wt% related to the overall weight of electrolyte.
Preferably according to the invention, the electrolyte includes possible further additives such as wetting agents, buffers, stabilizers and/or inhibitors.
According to a further preferred feature of the invention, said electrolytic treatment is carried out at bath temperatures ranging from 10 to 50 C.
The invention also contemplates that said treatment be carried out anodically with direct current and that the quantity of electricity used is 30-90 kCm-2.
Detailed D~ri~tion of the Invention The millfinished aluminium sheet is ~hereby dipped, 2~589 without any pretreatment, in an electrolyte whose water contains sodiumtpotassium silicate in a concentration of 4-30 wt%, and is anodized at a constant amperage. The voltage thereby gradually increases and can, depending on the process parameters, reach 300V or more. The quantity of electricity used ranges from 30 to 90 kCm-2 (kiloCoulomb/m2).
On the treated and immediately adjacent aluminium surfaces firmly adhering ceramic crystals are formed by a controlled fusion at temperatures of up to 1200~C. The particle size and amount of these crystals depends on the temperature and the composition of the electrolyte, amperage, electrode gap and treatment period.
The plating created according to the invention is completely different from currently standard types of anodization of aluminium surfaces. It is very hard and abrasion proof, yet neverth01ess has good absorbency ~or retaining and storing the damping water required for of~set printing. It is inert and requires no posttreatment or so-called "sealing". It is therefore equally suitahle for coating with positive and negative acting photolacquers, with zinc salts or organic compounds of sensitized coatings for electrophotography and with silver salts sensitized photocoatings. The special type of surface graining achieved eases the air drain during contacting and exposure of ~he place in the vacuum printing down frame. It is therefore not necessary to give the photolacquer a grained surface by the addition of colourless pigments or cover it with an additional water soluble matt coating.
The el0ctrolyte contains no aggressive acids and does not enrich itself in use with aluminium salts. It is therefore long-lived, easy to maintain and minimizes the waste-water treatment. The thickness of the coating and the surface roughness thereof can be reliably controlled by varying the composition and temperature of the electrolyte, as well as the amperage and the tr0atment period. The well-! known "edge effect" which occurs in electrograining and alsoin all other electroplating processes with flat objects-i.e. higher concentration of the current on the outer edges than in the middle of the object - does not occur with this 2~8~8~
process. The process is suitable both for the treatment of trimmed sheets and for endless strips ~rom coil.
A 450 x 500 mm "litho" quality aluminium sheet is treated, without any pretreatment, in an electrolyte whose 20 1 overall capacity is made up of approx. 15 1 water, 4 kg potassium waterglass ot` density D = 1.309 and a mole ratio of 3.41, 140 g potassium hydroxide and 10 g citric acid, filled up to 20 1 with water. The aluminium sheet is anodically connected to a direct current source with automati- amperage stabilization. The cathode - also of aluminium or lead, high-grade steel or titanium - is brought to a distance of approx.
10 cm from the anode. A constant cwrrent of 35 amperes is switched on for 5 minutes, during which time the volta3e gradually rises to 250V. The electrolyte temperature is kept at 20C. After washing with demineralized water and drying, the aluminium plate is ready for coating with photolacquer.
The mean roughness value according to DIN is Ra = 9.5 ~m, the increase in thickness approx. 4 ~m.
2~ EXAMPLE 2 As in Example 1, however the 20 1 overall electrolyte solution contains: 1100 g potassium waterglass of density D =
1~263 and a mole ratio of 3.82, 178 g potassium hydroxide and : 10 9 citric acid. The voltage increases up to 300V. The mean roughness value according to DIN -is Ra = 6.5 ~m, the increase in thickness approx. 8 ~m.
As in Example 2, however aluminium sheet mechanically roughened in standard manner, i.e. with brush and aqueous abradant solution. The mean roughness value is Ra = 5 ~m.
'
D E S C R I P T I O N
Back~round of the Invention F eld_o~ e_Invention The invention concerns a surface kreatment of aluminium sheets whose advantages and properties make them particularly suitable for the manufacture of presensitized offset printing plates of all kinds and of the so-called wipe-on plates. The invention concerns in particular an offset printing plate which can be manufactured with this treatment and a process for the manufacture of these plates.
~eference of the Prior Art Conventional offset printing plates manufactured according to the state of the art consist of pure aluminium or an aluminium alloy and require a multi-step surface treatment prior to the application of the light sensitive coatings. The millfinished aluminium surface is brushgrained and/or electrograined to provids a better adhesion of the photolacquer and the required damping water for printing.
Subsequent anodization provides better abrasion resistance and hereby better durability of the plates in the printing press. A typical treatment consists of: etching/degreasing in alkaline solution - pickling in acid - electrograinin3 with alternating current - anodizing with direct current-posttreatment by dipping in acid, the so-called "sealing". In many cases this is proceeded by a brushgraining using a brush and aqueous abradant suspension. A thorough rinsing with water is required between the two treatment stages and at the finish. Plates that are to be subsequently coated with positive lacquer, negative lacquer, or ara to be provided with light sensitive coatings for electrophotography or for the silver salt process require a surface treatment that is specifically suited to the respective case.
Summary of the Invention The object of the invention is to create an aluminium surface of at least equivalent quality to that created by conventional processes, but with considerably less process stages and expenditure in material and energy.
The offset printing plate referred to comprises a 2 ~ 8 9 sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, at least one of the surfaces of said sheetlike member containing a fixed coating of sodium and/or potassium silicate in a thickness of from 0.5 to 4 ~m at a mean roughness value (Ra ) ranging from 0.3 to 0.9 ~m.
According to a further feature of the invention, said silicate coating is covered by an additional coating formed:
by a liyht sensitive positive or negative acting photolacquer, by an electrophotographic acting photocoating or by a silver salt sensitized photocoating of standard type.
The said base material may ~e polyester, acetata, a laminated polymer, a waterproofed paper or other appropriate material.
In turn, the said alloy may comprise magnesium, iron, titanium or other metal.
Tests surprisingly showed that a single stage surface treatment of the aluminium was sufficient to meet the technical and quality requirements for offset printing plates.
This treatment is characterized in that a sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, is subjected to an electrolytic treatment in an electrolyte containing sodium and/or potassium silicate in a concentration of 4-30 wt% related to the overall weight of electrolyte.
Preferably according to the invention, the electrolyte includes possible further additives such as wetting agents, buffers, stabilizers and/or inhibitors.
According to a further preferred feature of the invention, said electrolytic treatment is carried out at bath temperatures ranging from 10 to 50 C.
The invention also contemplates that said treatment be carried out anodically with direct current and that the quantity of electricity used is 30-90 kCm-2.
Detailed D~ri~tion of the Invention The millfinished aluminium sheet is ~hereby dipped, 2~589 without any pretreatment, in an electrolyte whose water contains sodiumtpotassium silicate in a concentration of 4-30 wt%, and is anodized at a constant amperage. The voltage thereby gradually increases and can, depending on the process parameters, reach 300V or more. The quantity of electricity used ranges from 30 to 90 kCm-2 (kiloCoulomb/m2).
On the treated and immediately adjacent aluminium surfaces firmly adhering ceramic crystals are formed by a controlled fusion at temperatures of up to 1200~C. The particle size and amount of these crystals depends on the temperature and the composition of the electrolyte, amperage, electrode gap and treatment period.
The plating created according to the invention is completely different from currently standard types of anodization of aluminium surfaces. It is very hard and abrasion proof, yet neverth01ess has good absorbency ~or retaining and storing the damping water required for of~set printing. It is inert and requires no posttreatment or so-called "sealing". It is therefore equally suitahle for coating with positive and negative acting photolacquers, with zinc salts or organic compounds of sensitized coatings for electrophotography and with silver salts sensitized photocoatings. The special type of surface graining achieved eases the air drain during contacting and exposure of ~he place in the vacuum printing down frame. It is therefore not necessary to give the photolacquer a grained surface by the addition of colourless pigments or cover it with an additional water soluble matt coating.
The el0ctrolyte contains no aggressive acids and does not enrich itself in use with aluminium salts. It is therefore long-lived, easy to maintain and minimizes the waste-water treatment. The thickness of the coating and the surface roughness thereof can be reliably controlled by varying the composition and temperature of the electrolyte, as well as the amperage and the tr0atment period. The well-! known "edge effect" which occurs in electrograining and alsoin all other electroplating processes with flat objects-i.e. higher concentration of the current on the outer edges than in the middle of the object - does not occur with this 2~8~8~
process. The process is suitable both for the treatment of trimmed sheets and for endless strips ~rom coil.
A 450 x 500 mm "litho" quality aluminium sheet is treated, without any pretreatment, in an electrolyte whose 20 1 overall capacity is made up of approx. 15 1 water, 4 kg potassium waterglass ot` density D = 1.309 and a mole ratio of 3.41, 140 g potassium hydroxide and 10 g citric acid, filled up to 20 1 with water. The aluminium sheet is anodically connected to a direct current source with automati- amperage stabilization. The cathode - also of aluminium or lead, high-grade steel or titanium - is brought to a distance of approx.
10 cm from the anode. A constant cwrrent of 35 amperes is switched on for 5 minutes, during which time the volta3e gradually rises to 250V. The electrolyte temperature is kept at 20C. After washing with demineralized water and drying, the aluminium plate is ready for coating with photolacquer.
The mean roughness value according to DIN is Ra = 9.5 ~m, the increase in thickness approx. 4 ~m.
2~ EXAMPLE 2 As in Example 1, however the 20 1 overall electrolyte solution contains: 1100 g potassium waterglass of density D =
1~263 and a mole ratio of 3.82, 178 g potassium hydroxide and : 10 9 citric acid. The voltage increases up to 300V. The mean roughness value according to DIN -is Ra = 6.5 ~m, the increase in thickness approx. 8 ~m.
As in Example 2, however aluminium sheet mechanically roughened in standard manner, i.e. with brush and aqueous abradant solution. The mean roughness value is Ra = 5 ~m.
'
Claims (6)
1.- An offset printing plate comprising a sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, at least one of the surfaces of said sheetlike member containing a fixed coating of sodium and/or potassium silicate in a thickness of from 0.5 to 4 µm at a mean roughness value (Ra) ranging from 0.3 to 0.9 µm.
2.- The plate of claim 1, wherein said silicate coating is covered by an additional coating formed: by a light sensitive positive or negative acting photolacquer, by an electrophotographic acting photocoating or by a silver salt sensitized photocoating of standard type.
3.- A process for the manufacture of offset printing plates in which a sheetlike member constituted: by aluminium with a degree of purity of not less than 90% Al; by an aluminium alloy; or by a laminated foil of aluminium and a base material, is subjected to an electrolytic treatment in an electrolyte containing sodium and/or potassium silicate in a concentration of 4-30 wt% related to the overall weight of electrolyte.
4.- The process of claim 3, wherein the electrolyte includes further additives such as wetting agents, buffers, stabilizers and/or inhibitors.
5.- The process of claim 3, wherein said electrolytic treatment is carried out at bath temperatures ranging from 10 to 50°C.
6.- The process of any one of claims 3 to 5, wherein said treatment is carried out anodically with direct current and that the quantity of electricity used is 30-90 kCm-2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9101184A ES2036127B1 (en) | 1991-05-16 | 1991-05-16 | PRINTING PLATE AND PROCEDURE FOR ITS MANUFACTURE. |
| ES9101184 | 1991-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2068589A1 true CA2068589A1 (en) | 1992-11-17 |
Family
ID=8272377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2068589 Abandoned CA2068589A1 (en) | 1991-05-16 | 1992-05-13 | Offset printing plate and process for the manufacture thereof |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0514312A1 (en) |
| JP (1) | JPH05193285A (en) |
| BR (1) | BR9201855A (en) |
| CA (1) | CA2068589A1 (en) |
| ES (1) | ES2036127B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6357351B1 (en) | 1997-05-23 | 2002-03-19 | Kodak Polychrome Graphics Llc | Substrate for planographic printing |
| GB9710549D0 (en) * | 1997-05-23 | 1997-07-16 | Horsell Graphic Ind Ltd | Planographic printing |
| CN100349660C (en) * | 1998-10-19 | 2007-11-21 | Toto株式会社 | Stainproof material and method for manufacturing the same, and coating composition and apparatus therefor |
| US7921782B2 (en) | 2001-03-01 | 2011-04-12 | Cascade Engineering, Inc. | Individual transportation system |
| ES2195765B1 (en) | 2002-01-29 | 2005-02-01 | Planchas Y Productos Para Offset Lithoplate, S.A. | IRON FOR OFFSET PRINTING AND PROCEDURE FOR MANUFACTURING. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166777A (en) * | 1969-01-21 | 1979-09-04 | Hoechst Aktiengesellschaft | Corrosion resistant metallic plates particularly useful as support members for photo-lithographic plates and the like |
| US3720164A (en) * | 1971-12-23 | 1973-03-13 | Durolith Corp | Method of making corrosion resistant metallic plates particularly useful as lithographic plates and the like |
| US3956080A (en) * | 1973-03-01 | 1976-05-11 | D & M Technologies | Coated valve metal article formed by spark anodizing |
| CH599576A5 (en) * | 1976-08-12 | 1978-05-31 | Alusuisse | Offset printing plates with improved mechanical properties |
| DE3206470A1 (en) * | 1982-02-23 | 1983-09-01 | Hoechst Ag, 6230 Frankfurt | METHOD FOR THE PRODUCTION OF CARRIER MATERIALS FOR OFFSET PRINTING PLATES |
| US4376814A (en) * | 1982-03-18 | 1983-03-15 | American Hoechst Corporation | Ceramic deposition on aluminum |
| ES515939A0 (en) * | 1982-09-24 | 1983-10-16 | Minnesota Mining & Mfg | "A PROCEDURE FOR PREPARING A PHOTOSENSITIVE SUBSTRATE". |
| DE3406102A1 (en) * | 1984-02-21 | 1985-08-22 | Hoechst Ag, 6230 Frankfurt | METHOD FOR TREATING ALUMINUM OXIDE LAYERS WITH AQUEOUS SOLUTIONS CONTAINING ALKALIMETAL SILICATE AND THE USE THEREOF IN THE PRODUCTION OF OFFSET PRINT PLATE CARRIERS |
-
1991
- 1991-05-16 ES ES9101184A patent/ES2036127B1/en not_active Expired - Lifetime
-
1992
- 1992-05-07 EP EP92500055A patent/EP0514312A1/en not_active Withdrawn
- 1992-05-13 CA CA 2068589 patent/CA2068589A1/en not_active Abandoned
- 1992-05-15 BR BR929201855A patent/BR9201855A/en not_active Application Discontinuation
- 1992-05-18 JP JP12447592A patent/JPH05193285A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0514312A1 (en) | 1992-11-19 |
| BR9201855A (en) | 1993-01-05 |
| ES2036127A1 (en) | 1993-05-01 |
| ES2036127B1 (en) | 1994-02-01 |
| JPH05193285A (en) | 1993-08-03 |
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