US2126181A - Lithographic printing plate - Google Patents
Lithographic printing plate Download PDFInfo
- Publication number
- US2126181A US2126181A US115445A US11544536A US2126181A US 2126181 A US2126181 A US 2126181A US 115445 A US115445 A US 115445A US 11544536 A US11544536 A US 11544536A US 2126181 A US2126181 A US 2126181A
- Authority
- US
- United States
- Prior art keywords
- plate
- zinc
- solution
- phosphate
- lithographic 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 - Lifetime
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 13
- 229910052725 zinc Inorganic materials 0.000 description 13
- 239000011701 zinc Substances 0.000 description 13
- 229910019142 PO4 Inorganic materials 0.000 description 11
- 239000010452 phosphate Substances 0.000 description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 10
- 235000021317 phosphate Nutrition 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000011253 protective coating Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 229940037003 alum Drugs 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical class CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- MFXMOUUKFMDYLM-UHFFFAOYSA-L zinc;dihydrogen phosphate Chemical compound [Zn+2].OP(O)([O-])=O.OP(O)([O-])=O MFXMOUUKFMDYLM-UHFFFAOYSA-L 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 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
Definitions
- This invention relates to lithographic printing plates of the kind that are used, for example. in photolithography and carry a grain to which an image is applied.
- Such plates are usually made of, or at least have a surface of, zinc.
- the grain is usually formed by a cumbersome and lengthy mechanical treatment.
- the invention By means of the invention it is possible to produce a plate having a number of striking advantages in comparison with a mechanically grained plate.
- the grain is fine and deep and allows an increased number of prints to be taken from the plate.
- the fine grain takes the design well, so that the time usually spent by an artist in touching up the design before printing is considerably reduced.
- the excel lent dot-formation that is produced allows a finer Screen to be used.
- the phosphate coating does not oxidize in the air and therefore need not be covered when not actually in use. The plates can be'cleaned and used again more often, because the phosphate coating tends if anything to thicken them, whereas mechanical graining wears their surfaces away.
- etching solution made by adding 1 ounce of concentrated nitric acid to gallon of water-and then saturating the diluted acid with alum. After this treatment it is rinsed in cold water wiped again with the cleaning preparation and again rinsed in cold and hot water. The surface is then ready for the phosphate treatment, which consists in immersion for from 30 to 40 minutes in a solution made by dissolving in gallons of water, 30 lbs. of a powder containing (by weight) 77% zinc dihydrogen phosphate, 19% ferrous sulphate and 4% zinc carbonate. This solution is kept at a temperature of about to 200 F. After the immersion the plates are rinsed and dried.
- a method for graining a zinc lithographic plate which comprises treating the zinc plate with a cleaning solution, washing the said plate, immersing the said plate in an etching solution, washing the said plate, and then immersing the a cleaning solution comprising phosphoric acid,
- the method of graining a zinc lithographic plate which comprises treating a zinc plate with a cleaning solution comprising phosphoric acid, butyl alcohol and sulphonated lorol, then rinsing the said plate with water, immersing the said plate in an etching solution comprising nitric acid and alum, washing the said plate, and then immersing the said plate until suitably grained in a heated solution of zinc dihydrogen.
- a cleaning solution comprising phosphoric acid, butyl alcohol and sulphonated lorol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35488/35A GB467610A (en) | 1935-12-21 | 1935-12-21 | Lithographic printing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2126181A true US2126181A (en) | 1938-08-09 |
Family
ID=10378296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US115445A Expired - Lifetime US2126181A (en) | 1935-12-21 | 1936-12-11 | Lithographic printing plate |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2126181A (en)van) |
| FR (1) | FR815191A (en)van) |
| GB (1) | GB467610A (en)van) |
| NL (1) | NL44488C (en)van) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400023A (en) * | 1964-05-11 | 1968-09-03 | Kelite Corp | Composition for preservation of metals, process and article |
-
0
- NL NL44488D patent/NL44488C/xx active
-
1935
- 1935-12-21 GB GB35488/35A patent/GB467610A/en not_active Expired
-
1936
- 1936-12-11 US US115445A patent/US2126181A/en not_active Expired - Lifetime
- 1936-12-18 FR FR815191D patent/FR815191A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400023A (en) * | 1964-05-11 | 1968-09-03 | Kelite Corp | Composition for preservation of metals, process and article |
Also Published As
| Publication number | Publication date |
|---|---|
| FR815191A (fr) | 1937-07-07 |
| NL44488C (en)van) | |
| GB467610A (en) | 1937-06-21 |
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