US2154219A - Lithograph plate - Google Patents
Lithograph plate Download PDFInfo
- Publication number
- US2154219A US2154219A US2887235A US2154219A US 2154219 A US2154219 A US 2154219A US 2887235 A US2887235 A US 2887235A US 2154219 A US2154219 A US 2154219A
- Authority
- US
- United States
- Prior art keywords
- plate
- paper
- lithography
- coating
- water
- 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
- 238000001459 lithography Methods 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000004519 grease Substances 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000005018 casein Substances 0.000 description 5
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 5
- 235000021240 caseins Nutrition 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229940009827 aluminum acetate Drugs 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- B41N3/036—Chemical or electrical pretreatment characterised by the presence of a polymeric hydrophilic coating
-
- 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
- B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/08—Developable by water or the fountain solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31815—Of bituminous or tarry residue
- Y10T428/31819—Next to cellulosic
- Y10T428/31823—Paper
Definitions
- My invention relates to a plate adapted to be used in lithography, either oifset or direct.
- the object of my invention is to make a plate of paperwhich shall have the properties necessary for successful commercial use in place of the more expensive'stone or metal plates.
- a paper plate must be strong and pliable and pref erably of a light color so that the ink impressions thereon will'be conspicuous.
- Its surface should be such as to stand drawing, printing, typing or painting. The surface may desirably be sensitized so as to receive photographic impressions. The surface should be such that all marks can be readily erased or otherwise corrected.
- a sheet of waterproof paper that is, the paper must be sufllclently waterproofed so that itwill not expand when wet even to the very small extent-which would be deleterious in its use as a plate for lithography.
- Sheets of such waterproof paper may be prepared in many ways.
- A' preferred sheet comprises two layers of waterrepellent paper stuck together by an intermediate layer of asphaltum.
- Such a composite sheet I have found very satisfactory for my purpose.
- a single sheet of paper, that is sufficiently waterproof by reason of chemical treatment or otherwise, will, however, answer the purpose.
- this paper sheet which is waterproof as above described, a coating of a material such that the surface of the coated paper will have a substantially equal aflinity both for the water (which may or may not be chemically treated) used in lithography and for the grease comprised in the marking materials commonly used in preparing lithographic plates and in the ink used in lithography.
- a coating of a material such that the surface of the coated paper will have a substantially equal aflinity both for the water (which may or may not be chemically treated) used in lithography and for the grease comprised in the marking materials commonly used in preparing lithographic plates and in the ink used in lithography.
- I refer herein to such water as lithography water and to such grease as lithography grease.
- the plate is then dried.
- the clay or silica or like material provides an E5 even texture or grain on the surface of the paper plate, which is necessary for the best results in receiving and retaining the applied marking material.
- the surface of the thus coated paper plate contains a multitude of tiny m depressions which receive the marking material used in preparing the plate and help this marking material to adhere tenaciously to the plate.
- the size and character of such depressions may be controlled by rendering that surface 1% alkaline to redissolve or soften the binder, as by treatment with ammonia, and/or regulating the temperature and rate of drying.
- Formaldehyde or any suitable acid may then be applied to the coating to render it insoluble in the water or W repellents used in lithography.
- initial greasy marking material applied to the 45 plate, forms a uniform and continuous coating over the areas marked, which coating adheres to the plate with such tenacity that it will not be displaced -by the lithography water which is applied over the entire surface of the plate.
- the plate for the lithography water and grease secures the important result that neither such water nor grease materially displaces the other. If it did, a blurred impression would result after an undesirably few impressions has been taken.
- the afllnities of the surface of the plate to the lithography water and grease need not be exact ly equal, but are so nearly equal that the impressions will not become blurred in the normal use of the plate in commercial lithography.
- the plate photo-sensitive I may add to the coating any of the well-known photo-sensitive chemicals so that the plate will take photo impressions which may be developed on exposure to light in the manner wellknown to the art.
- the attached paper is also advantageous in-provid- 'ing a means for holding in place a sheet from which marks are to be reproduced on the surface of the plate, such as a sheet of carbon paper.
- a plate for .use in lithography comprising a water-repellent paper base coated with a coating comprising casein, silicious clay and formaldehyde, said coating possessing an amnity for li- I ing sheet which is substantially non-stretching when subjected to the lithographing process, and a flexible coating comprising a filler, casein and formaldehyde firmly adhering to said sheet, the surface of said coating having lithographic prop erties.
Description
Patented Apr. 11, 1939 UNITED STATES PATENT OFFICE No Drawing.
Application June 28, 1935.
Serial No. 28,872
. 3 Claims. (01.101-4014 My invention relates to a plate adapted to be used in lithography, either oifset or direct.
Heretofore such plates have 'been made of stone or of metal such as zinc or aluminum.
The object of my invention is to make a plate of paperwhich shall have the properties necessary for successful commercial use in place of the more expensive'stone or metal plates. Such a paper plate must be strong and pliable and pref erably of a light color so that the ink impressions thereon will'be conspicuous. Its surface should be such as to stand drawing, printing, typing or painting. The surface may desirably be sensitized so as to receive photographic impressions. The surface should be such that all marks can be readily erased or otherwise corrected.
In the practice of my invention I first take a sheet of waterproof paper, that is, the paper must be sufllclently waterproofed so that itwill not expand when wet even to the very small extent-which would be deleterious in its use as a plate for lithography. Sheets of such waterproof paper may be prepared in many ways. A' preferred sheet comprises two layers of waterrepellent paper stuck together by an intermediate layer of asphaltum. Such a composite sheet I have found very satisfactory for my purpose. A single sheet of paper, that is sufficiently waterproof by reason of chemical treatment or otherwise, will, however, answer the purpose.
I then apply to one or both surfaces of this paper sheet, which is waterproof as above described, a coating of a material such that the surface of the coated paper will have a substantially equal aflinity both for the water (which may or may not be chemically treated) used in lithography and for the grease comprised in the marking materials commonly used in preparing lithographic plates and in the ink used in lithography. I refer herein to such water as lithography water and to such grease as lithography grease.
While various mixtures or compositions of materials may be used for coating the surface of the paper plate and imparting to it the desired aflinity for lithography water and grease, I have found that one very satisfactory coating, which I give by way of example, consists of a mixture of silica or clay (aluminum silicate) or other suitable filler, a binder such as casein, starch or glue, and a waterproofing compound such as formaldehyde or aluminum acetate. I have found a coating consisting, for example, of 40 parts by weight of 10% alkaline casein solution or a true solvent solution of casein, 55 parts of powdered clay and 5 parts of 40% commercial formalde- ,hyde solution to be entirely satisfactory. This.
the surface of the paper plate to repel the ink 36 on the inking roll, in conjunction with the wellknown chemicals, which are used in lithographic repellents, such as phosphoric acid for example.
The plate is then dried.
The clay or silica or like material provides an E5 even texture or grain on the surface of the paper plate, which is necessary for the best results in receiving and retaining the applied marking material. The surface of the thus coated paper plate contains a multitude of tiny m depressions which receive the marking material used in preparing the plate and help this marking material to adhere tenaciously to the plate. The size and character of such depressions may be controlled by rendering that surface 1% alkaline to redissolve or soften the binder, as by treatment with ammonia, and/or regulating the temperature and rate of drying. Formaldehyde or any suitable acid may then be applied to the coating to render it insoluble in the water or W repellents used in lithography.
I have found that a paper, so waterproofed as not to expand deleteriously when. wet in the lithographing process in which it is used, and
which provides a surface of substantially equal affinity for lithography water and grease makes a satisfactory plate having the qualities and properties necessary for successful practical use.
, I have said thatthe surface of the coated pa- 4c per plate of my invention has a substantially equal aiiinity for lithography grease and water. By that I mean that it has the following properties with respect to such grease and water. The
initial greasy marking material, applied to the 45 plate, forms a uniform and continuous coating over the areas marked, which coating adheres to the plate with such tenacity that it will not be displaced -by the lithography water which is applied over the entire surface of the plate. 50
coated with a coating such as above described w the plate for the lithography water and grease secures the important result that neither such water nor grease materially displaces the other. If it did, a blurred impression would result after an undesirably few impressions has been taken. The afllnities of the surface of the plate to the lithography water and grease need not be exact ly equal, but are so nearly equal that the impressions will not become blurred in the normal use of the plate in commercial lithography.
In order to make the plate photo-sensitive I may add to the coating any of the well-known photo-sensitive chemicals so that the plate will take photo impressions which may be developed on exposure to light in the manner wellknown to the art.
I prefer to coat the paper on both sides. In such case I have found it advantageous to attach to each side of the coated plate, preferably by embossing, a sheet of thin paper, such as tissue paper, which protects the coated surface when the plates are'assembled in a pile as'they would conveniently be for practical use. The attached paper is also advantageous in-provid- 'ing a means for holding in place a sheet from which marks are to be reproduced on the surface of the plate, such as a sheet of carbon paper.
I claim: a
1. A plate for .use in lithography comprising a water-repellent paper base coated with a coating comprising casein, silicious clay and formaldehyde, said coating possessing an amnity for li- I ing sheet which is substantially non-stretching when subjected to the lithographing process, and a flexible coating comprising a filler, casein and formaldehyde firmly adhering to said sheet, the surface of said coating having lithographic prop erties.
- JOE V. R. SHEPHERD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2887235 US2154219A (en) | 1935-06-28 | 1935-06-28 | Lithograph plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2887235 US2154219A (en) | 1935-06-28 | 1935-06-28 | Lithograph plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2154219A true US2154219A (en) | 1939-04-11 |
Family
ID=21845982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2887235 Expired - Lifetime US2154219A (en) | 1935-06-28 | 1935-06-28 | Lithograph plate |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2154219A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511783A (en) * | 1946-02-28 | 1950-06-13 | Planographic printing sheet | |
| US2534588A (en) * | 1946-08-19 | 1950-12-19 | Warren S D Co | Paper base planographic printing plate |
| US2559610A (en) * | 1947-12-12 | 1951-07-10 | Warren S D Co | Planographic printing plate and treatment thereof |
| US2635537A (en) * | 1950-07-19 | 1953-04-21 | Warren S D Co | Paper planographic printing plate with stabilized hydrophilic coating |
| US2655101A (en) * | 1945-03-08 | 1953-10-13 | Columbia Ribbon & Carbon | Planographic plate and method of making same |
| US2681617A (en) * | 1947-11-28 | 1954-06-22 | Warren S D Co | Planographic printing |
| US2696783A (en) * | 1948-11-06 | 1954-12-14 | Columbia Ribbon Carbon Mfg | Planographic plate and method of making the same |
| US2721815A (en) * | 1951-01-19 | 1955-10-25 | Dick Co Ab | Method for manufacturing improved planographic printing plates |
| US2953088A (en) * | 1953-08-17 | 1960-09-20 | Columbia Ribbon & Carbon | Planographic printing |
| US3031958A (en) * | 1953-10-23 | 1962-05-01 | Columbia Ribbon & Carbon | Method of manufacture of paper planographic plate |
| US3183832A (en) * | 1960-02-01 | 1965-05-18 | Azoplate Corp | Lithographic printing foil |
-
1935
- 1935-06-28 US US2887235 patent/US2154219A/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2655101A (en) * | 1945-03-08 | 1953-10-13 | Columbia Ribbon & Carbon | Planographic plate and method of making same |
| US2511783A (en) * | 1946-02-28 | 1950-06-13 | Planographic printing sheet | |
| US2534588A (en) * | 1946-08-19 | 1950-12-19 | Warren S D Co | Paper base planographic printing plate |
| US2681617A (en) * | 1947-11-28 | 1954-06-22 | Warren S D Co | Planographic printing |
| US2559610A (en) * | 1947-12-12 | 1951-07-10 | Warren S D Co | Planographic printing plate and treatment thereof |
| US2696783A (en) * | 1948-11-06 | 1954-12-14 | Columbia Ribbon Carbon Mfg | Planographic plate and method of making the same |
| US2635537A (en) * | 1950-07-19 | 1953-04-21 | Warren S D Co | Paper planographic printing plate with stabilized hydrophilic coating |
| US2721815A (en) * | 1951-01-19 | 1955-10-25 | Dick Co Ab | Method for manufacturing improved planographic printing plates |
| US2953088A (en) * | 1953-08-17 | 1960-09-20 | Columbia Ribbon & Carbon | Planographic printing |
| US3031958A (en) * | 1953-10-23 | 1962-05-01 | Columbia Ribbon & Carbon | Method of manufacture of paper planographic plate |
| US3183832A (en) * | 1960-02-01 | 1965-05-18 | Azoplate Corp | Lithographic printing foil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3677178A (en) | Dry planographic plates and methods, production and use | |
| US2835576A (en) | Light-sensitive polyvalent metal alginate photolithographic element | |
| US2154219A (en) | Lithograph plate | |
| US2230981A (en) | Printing plate | |
| US2635537A (en) | Paper planographic printing plate with stabilized hydrophilic coating | |
| US2311889A (en) | Lithographic plate | |
| US2132443A (en) | Planographic plate and method | |
| US3682633A (en) | Color proofing method | |
| US3128181A (en) | Sheet material coated with water-resistant polyvinyl alcohol and method of making the same | |
| US2156100A (en) | Planographic printing plate and method of making the same | |
| US2766688A (en) | Planographic printing plate | |
| US1627407A (en) | Transfer print and method of making the same | |
| US4272604A (en) | Base plate and lithographic plate prepared by sensitization thereof | |
| US2738727A (en) | Methods of preparing master copies for hectographic printing | |
| US4150187A (en) | Transfer elements and process | |
| US3640221A (en) | Planographic printing plate | |
| DE2551860A1 (en) | PAPER CARRIER | |
| US3230873A (en) | Colloid coated paper with anti-wrinkling and puckering properties | |
| US2532866A (en) | Method and plate for lithographic printing | |
| US3592137A (en) | Planographic printing plates | |
| US2721815A (en) | Method for manufacturing improved planographic printing plates | |
| US3020839A (en) | Planographic printing plates | |
| US223873A (en) | Process of autographic printing | |
| US3083639A (en) | Process for making planographic printing plates | |
| US3776756A (en) | Correction material and method for the manufacture thereof |