US518826A - Ralph j - Google Patents
Ralph j Download PDFInfo
- Publication number
- US518826A US518826A US518826DA US518826A US 518826 A US518826 A US 518826A US 518826D A US518826D A US 518826DA US 518826 A US518826 A US 518826A
- Authority
- US
- United States
- Prior art keywords
- plate
- relief
- coating
- metal
- 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
- 239000002184 metal Substances 0.000 description 28
- 229910052751 metal Inorganic materials 0.000 description 28
- 239000011248 coating agent Substances 0.000 description 22
- 238000000576 coating method Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 18
- 238000005530 etching Methods 0.000 description 12
- 238000004070 electrodeposition Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000000903 blocking Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000994 depressed Effects 0.000 description 2
- 239000009136 dragon's blood Substances 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C3/00—Reproduction or duplicating of printing formes
- B41C3/08—Electrotyping; Application of backing layers thereon
Definitions
- This invention relates to an improved process of making relief-plates for printing purposes, and it consists of the following successive steps: first, coating the surface of a soft metal plate with a layer of a hard metal by electro-deposition, secondly, transferring the picture to be produced by photography or otherwise onto the metallic coating of the plate, third, etching the uncovered parts of the plate by galvanocaustic means until the uncovered parts of the hard metal coating are removed, fourth, deep-etching the uncovered parts by the use of suitable acids.
- Figure 1 represents a metal-plate which illustrates the dierent steps of my improved process of making relief printing plates.
- Fig. 2 is'a vertical longitudinal section of the same, on line 2 2, Fig. 1, and
- Fig, 3 is a section of the iinished relief plate.
- a plate of typemetal, zinc or other soft metal is coated by electro deposition with a layer of nickel, brass, copper, iron or other hard metal.
- To this surface-coating is transferred by the photographic process or otherwise the picture to be produced as shown at A, Figs. l and 2, and the uncovered portions of the plate are etched away by galvanocaustic means, until the metal, of which the body of the plate is composed, appears as shown at B.
- the plate is then subjected to a slight chemical etching, after which the half-tone relief-plate is ready for iin al retouching, blocking, 85o.
- the plate When the relief-plate isv to be in lines or stipples, the plate is rolled up with fatty inks by means of a hard roller and then powdered in with dragons-blood, the surplus of which is carefully brushed offr while the remaining powder I is melted in so as to produce a thin acid-proof surface-coating for the parts in relief, as shown at C, in Figs. l and 2.
- the plate is next subjected to a deep-etching process by the use of a suitable acid, after which the plate is cleaned of all adhering resin and etched again for a short while, washed with water and dried, as shown at D.
- the result is a metal foundation-plate in which the parts in relief are covered by a protecting surface coating of a hard ⁇ metal from which a much larger number of impressions can be taken than from the ordinary relief-printing plates and which can be produced inamuch shorter time by my process than by the process heretofore in use.
- a relief printing plate consisting of a soft metal foundation and a surface coating of hard metal, said plate having an etched or engraved face, the depressed portions of which extend through the surface coating into the soft/metal base, the edges of said coating remaining on the raised portions being sharp, substantially as set forth.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
odel.) '8
R. J. SAGHERS. 'M AAAAAAAAAAAAA RI NNNNNNNNNNN No. 518,826. Patented Apr. 24, 1894.
Qua/MIR M NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN v.
UNITED STATES PATE-NT OFFICE.
RALPH J..SAOHERS, OF NEW YORK, N. Y.
MANUFACTURE OF PRINTING-PLATES.
SPECIFICATION forming part of Letters Patent No. 518,826, dated April 24, 1894, Application filed J' une 28, 1892. Renewed November 10, 1893. Serial No. 490,588. (No specimens.)
.To @ZZ whom it' may concern.-
Be it known that I, RALPH J. SAonERs, a citizen of the United States, and a resident of the city, county, and State ofA New York, have invented certain new and useful Improvements in the Manufacture of Printing-Plates, of which the following is a specification.
This invention relates to an improved process of making relief-plates for printing purposes, and it consists of the following successive steps: first, coating the surface of a soft metal plate with a layer of a hard metal by electro-deposition, secondly, transferring the picture to be produced by photography or otherwise onto the metallic coating of the plate, third, etching the uncovered parts of the plate by galvanocaustic means until the uncovered parts of the hard metal coating are removed, fourth, deep-etching the uncovered parts by the use of suitable acids.-
In the accompanying drawings, Figure 1 represents a metal-plate which illustrates the dierent steps of my improved process of making relief printing plates. Fig. 2 is'a vertical longitudinal section of the same, on line 2 2, Fig. 1, and Fig, 3 is a section of the iinished relief plate.
Similar letters of reference indicate corresponding parts.
In carrying out my process of making reliefplates for printing purposes, a plate of typemetal, zinc or other soft metal is coated by electro deposition with a layer of nickel, brass, copper, iron or other hard metal. To this surface-coating is transferred by the photographic process or otherwise the picture to be produced as shown at A, Figs. l and 2, and the uncovered portions of the plate are etched away by galvanocaustic means, until the metal, of which the body of the plate is composed, appears as shown at B. When a halftone plate is to be produced the plate is then subjected to a slight chemical etching, after which the half-tone relief-plate is ready for iin al retouching, blocking, 85o. When the relief-plate isv to be in lines or stipples, the plate is rolled up with fatty inks by means of a hard roller and then powdered in with dragons-blood, the surplus of which is carefully brushed offr while the remaining powder I is melted in so as to produce a thin acid-proof surface-coating for the parts in relief, as shown at C, in Figs. l and 2. The plate is next subjected to a deep-etching process by the use of a suitable acid, after which the plate is cleaned of all adhering resin and etched again for a short while, washed with water and dried, as shown at D. The result is a metal foundation-plate in which the parts in relief are covered by a protecting surface coating of a hard `metal from which a much larger number of impressions can be taken than from the ordinary relief-printing plates and which can be produced inamuch shorter time by my process than by the process heretofore in use.
Having thus described my invention, I claim as new and desire to secure by Letters Patentl l. A relief printing plate consisting of a soft metal foundation and a surface coating of hard metal, said plate having an etched or engraved face, the depressed portions of which extend through the surface coating into the soft/metal base, the edges of said coating remaining on the raised portions being sharp, substantially as set forth.
2. The process herein described of making relief-plates for printing purposes, which consists of the following steps: first, coating a soft metal plate by electro deposition with a surface-layer of a hard metal, second, transferring the picture to be produced on that plate, third, etching the uncovered partsbygalvanocaustic means, and fourthly, deep-etching by the use of a suitable acid, substantially as set forth.
3. The process of making relief plates for printing purposes, which consists in coating a soft metal plate by electro-deposition with a surface-layer of 4a hard metal; then transferA ringthe picture to be produced onto said plate; and then etching the uncovered parts thro ugh the surfacelayer, substantially asset forth.
In testimony that I claim the foregoing as my invention I have signed my naine in presence of two. subscribing witnesses.
RALPH J. SAOHERS.
Publications (1)
Publication Number | Publication Date |
---|---|
US518826A true US518826A (en) | 1894-04-24 |
Family
ID=2587625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US518826D Expired - Lifetime US518826A (en) | Ralph j |
Country Status (1)
Country | Link |
---|---|
US (1) | US518826A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2598253A (en) * | 1947-04-19 | 1952-05-27 | Otto W Greenberg | Tool driving means and control therefor |
US3113514A (en) * | 1960-04-14 | 1963-12-10 | Chemical Products Corp | Flexible printing plate |
-
0
- US US518826D patent/US518826A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2598253A (en) * | 1947-04-19 | 1952-05-27 | Otto W Greenberg | Tool driving means and control therefor |
US3113514A (en) * | 1960-04-14 | 1963-12-10 | Chemical Products Corp | Flexible printing plate |
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