US1155352A - Lithographic plate for offset and direct printing. - Google Patents
Lithographic plate for offset and direct printing. Download PDFInfo
- Publication number
- US1155352A US1155352A US85286714A US1914852867A US1155352A US 1155352 A US1155352 A US 1155352A US 85286714 A US85286714 A US 85286714A US 1914852867 A US1914852867 A US 1914852867A US 1155352 A US1155352 A US 1155352A
- Authority
- US
- United States
- Prior art keywords
- plate
- film
- lithographic
- transparency
- varnish
- 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
- 238000010017 direct printing Methods 0.000 title description 3
- 238000007645 offset printing Methods 0.000 title description 2
- 238000007639 printing Methods 0.000 description 15
- 239000002966 varnish Substances 0.000 description 15
- 238000005530 etching Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 238000001035 drying Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 6
- 229920002160 Celluloid Polymers 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000004784 Cymbopogon citratus Species 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003854 Surface Print Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- ZXJXZNDDNMQXFV-UHFFFAOYSA-M crystal violet Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1[C+](C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 ZXJXZNDDNMQXFV-UHFFFAOYSA-M 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000004833 fish glue Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/04—Chromates
Definitions
- LITHOGRAPHIC PLATE FOR OFFSET AND DIRECT PRINTING.
- . is to enable the plate to ca rry more ink than hitherto, thereby imparting a deeper color to theprint obtained from the plate, either directly or through the medium of an offset surface.
- the greasy printing surface is applied to the surface of the plate by means of a transfer, obtained in the Well-known manner, Whereafter the surface of the plate surrounding the various portions of the printing surface, is cleaned from scum by means of a liquid.
- This latter treatment' is called etching. al-' though not etching in the literal sense.
- the printing surface of an ordinary metal lithographic plate consists of a greasy substance on the surface of the plate.
- the printing surface of a metal lithographic plate is etched intaglio into the plate, whereby the printing surface, consisting of intaglio recesses, can. ta'ke up and impart more ink, than the mere surface printing surfaces hitherto provided on lithographic plates.
- the intaglio printing surface is formed on the metal lithographic plate, by printing photographically through a positive transparency on a sensitized-colloid film coating the plate, and afterward etching the plate through the exposed and treated film.
- the numeral 1 designates a thin flat plate of metal which forms the ordinary lithographic plate, such as zinc or aluminum, having a groove or depression '2 therein, constituting an intaglio portion of the plate which is coated with varnish as j shown at 3 within said groove, said coating of varnish covering the bottom of the depression, while the ink designated by the nu- Specification of Letters Patent.
- varnish which serves as a mat to hold a maximum quantity of the ink and which extends to the surface of the plate.
- the plate After removal of the transparency, the plate is washed with water which dissolves away the unhardened portions of the coating of the plate, and the plate is dipped in a dye bath, for instance a bath of methyl violet dye, to render the picture or the like now on the plate visible. After being dried, the plate is immersed from 2-3 minutes invan etching bath, for instance a perchlorid of iron bath. The usual etchers precautions in having the etching liquid of the correct consistency should be'observed. After etching, the hardened glue or the like film is softened by diluted hydrochloric acid -or other means,
- the intaglio portions of the plate can then be filled in with lithographic ink, but to cause the ink to hold better in the recesses, and impart a deeper color to the print obtained from the plate a varnish which is not dissolved by water or grease, such as celluloid varnish, is first rubbed into the recesses or intaglio portions of the plate.
- Celluloid varnish being a mat varnish also provides a holdfast for the ink block or set-up type, by type-writing or other suitable manner and rendered sufficiently opaque by dusting over with a suitable powder.
- the positive transparency can for example be produced by making an impression from a printing surface upon gelatin tracing paper, or this medium has the type-written matter directly typed thereon. The transparency is then dusted over with an opaque powder, such as powdered graphite, bronze, silver or the like powder, which, owing to the powder adhering to the varnish of the impression or typed matter, renders the same opaque.
- a method of producing a printing surface on a metal lithographic plate consisting of coating said plate with a sensitized film, exposing said film to light through a positive transparency, washing said plate after removal of said transparency, drying said plate, etching said plate, softening said film after said etching and removing the same, drying said plate, applying varnish insoluble in water or grease to the etched recesses of said plate, and filling said recesses with lithographic ink to a plane coincident with the face of the plate, said varnish serving as a mat to hold a maximum quantity of ink, thereby imparting a deeper color to the print obtained from theplate.
- a method of producing a printing surface on a metal lithographic plate consisting in coating said plate with a, sensitized colloid film, exposing said film to light through a positive transparency, washing said plate after removal of said transparency, drying said plate, etching said plate, softening said film after said etching, drying said plate, applying celluloid varnish to the etched recesses of said plate and filling said varnished recesses with lithographic ink and, removing the film.
- a method of producing a printing surface on a metal lithographic plate consisting in coating said plate with a sensitized film, exposing said film to light through a transparency, washing said plate after removal of the transparency, drying said plate, etching said plate, softening said film after said etching, drying said plate, applying celluloid varnish to the etched recesses of said plate, filling said varnished recesses with said lithographic ink, removing said film by washing around the recesses and gummingsaid plate to prevent oxidation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Methods (AREA)
Description
.l. GRASS.
LITHOGRAPHIC PLATE FOR OFFSET AND DIRECT PRINTING.
APPLlCATlON FILED JULY 24. 1914.
1,15,352. "Patented 0 t.5,1915.
' WITNESSES: v l/VI/E/VTOR JACOB GRASS, OE FULHAM, LONDON, ENGLAND.
LITHOGRAPHIC PLATE FOR OFFSET AND DIRECT PRINTTNG.
Application filed July 24; 1914. Serial No. 852,867.
. is to enable the plate to ca rry more ink than hitherto, thereby imparting a deeper color to theprint obtained from the plate, either directly or through the medium of an offset surface.
In the usual method of providing ametal lithographic plate with a printing surface,
the greasy printing surface is applied to the surface of the plate by means ofa transfer, obtained in the Well-known manner, Whereafter the surface of the plate surrounding the various portions of the printing surface, is cleaned from scum by means of a liquid. This latter treatment'is called etching. al-' though not etching in the literal sense. The printing surface of an ordinary metal lithographic plate consists of a greasy substance on the surface of the plate.
Now according to the present invention, the printing surface of a metal lithographic plate is etched intaglio into the plate, whereby the printing surface, consisting of intaglio recesses, can. ta'ke up and impart more ink, than the mere surface printing surfaces hitherto provided on lithographic plates.
The intaglio printing surface is formed on the metal lithographic plate, by printing photographically through a positive transparency on a sensitized-colloid film coating the plate, and afterward etching the plate through the exposed and treated film.
The figure of the drawings is an illustration on an enlarged scale of a lithographic invention.
In said figure the numeral 1 designates a thin flat plate of metal which forms the ordinary lithographic plate, such as zinc or aluminum, having a groove or depression '2 therein, constituting an intaglio portion of the plate which is coated with varnish as j shown at 3 within said groove, said coating of varnish covering the bottom of the depression, while the ink designated by the nu- Specification of Letters Patent.
plate made in accordance with the Pate 1 m'eral 4. is filled into. the groove over the.
varnish which serves as a mat to hold a maximum quantity of the ink and which extends to the surface of the plate.
The process is as follows:'A zinc or aluminium lithographic plate is coated with a sensitive colloid film, such as fish glue sensitized with a bichromate. A positive transparency, rendered suitably opaque, is placed on the sensitized film. For producing a direct printing plate the transparency is placed face downward on the plate, for producing an ofi'set printing plate, the transparency is placed face uppermost andaway from the plate, the transparency being suitably thin. On exposure to light, the portions of the sensitized coating of the plate which are beneath the transparent portions of the transparency harden. After removal of the transparency, the plate is washed with water which dissolves away the unhardened portions of the coating of the plate, and the plate is dipped in a dye bath, for instance a bath of methyl violet dye, to render the picture or the like now on the plate visible. After being dried, the plate is immersed from 2-3 minutes invan etching bath, for instance a perchlorid of iron bath. The usual etchers precautions in having the etching liquid of the correct consistency should be'observed. After etching, the hardened glue or the like film is softened by diluted hydrochloric acid -or other means,
and the plate'is dried. The intaglio portions of the plate can then be filled in with lithographic ink, but to cause the ink to hold better in the recesses, and impart a deeper color to the print obtained from the plate a varnish which is not dissolved by water or grease, such as celluloid varnish, is first rubbed into the recesses or intaglio portions of the plate. Celluloid varnish being a mat varnish also provides a holdfast for the ink block or set-up type, by type-writing or other suitable manner and rendered sufficiently opaque by dusting over with a suitable powder. The positive transparency can for example be produced by making an impression from a printing surface upon gelatin tracing paper, or this medium has the type-written matter directly typed thereon. The transparency is then dusted over with an opaque powder, such as powdered graphite, bronze, silver or the like powder, which, owing to the powder adhering to the varnish of the impression or typed matter, renders the same opaque.
I claim 1. A method of producing a printing surface on a metal lithographic plate, consisting of coating said plate with a sensitized film, exposing said film to light through a positive transparency, washing said plate after removal of said transparency, drying said plate, etching said plate, softening said film after said etching and removing the same, drying said plate, applying varnish insoluble in water or grease to the etched recesses of said plate, and filling said recesses with lithographic ink to a plane coincident with the face of the plate, said varnish serving as a mat to hold a maximum quantity of ink, thereby imparting a deeper color to the print obtained from theplate.
2. A method of producing a printing surface on a metal lithographic plate, consisting in coating said plate with a, sensitized colloid film, exposing said film to light through a positive transparency, washing said plate after removal of said transparency, drying said plate, etching said plate, softening said film after said etching, drying said plate, applying celluloid varnish to the etched recesses of said plate and filling said varnished recesses with lithographic ink and, removing the film.
3. A method of producing a printing surface on a metal lithographic plate, consisting in coating said plate with a sensitized film, exposing said film to light through a transparency, washing said plate after removal of the transparency, drying said plate, etching said plate, softening said film after said etching, drying said plate, applying celluloid varnish to the etched recesses of said plate, filling said varnished recesses with said lithographic ink, removing said film by washing around the recesses and gummingsaid plate to prevent oxidation.
4. The process of producing an intaglio printing surface-on a metal lithographic plate, consisting in coating the same with a sensitivecolloid film in the form of a glue, placing a 'positive transparency on the sensitized film rendered suitably opaque, hardening the portions of the sensitized coating of the plate which are located beneath the transparent portions of the transparency, dissolving away the unhardened portions of the coating of the plate by washing with water, dipping the plate in a dye bath to render the picture or the like thereon visible, drying the plate, immersing the same in an etching bath, softening the hardened glue like film and removing the same, then drying the plate and filling the intaglio portions of the plate with lithographic ink.
5. The process of producing an intaglio printing surface on a metal lithographic plate, consisting in coating the same with a sensitive colloid film in the form of a glue, placing a positive transparency on the sensi-' tized film rendered suitably opaque, hardening the portions of the sensitized coating of the plate which are located beneath the transparent portions of the transparency, dissolving away theunhardened portions of the coating of the plate by washing with water, dipping the plate in a dye bath to render the picture or the like thereon visible, drying the plate, immersing the same in an etching bath, softening the hardened glue like film, removing said film, then drying the plate and working celluloid varnish into the intaglio portions of the plate and then filling said intaglio portions with lithographic ink over the said varnish, whereby the latter being a mat varnish, will cause the ink to enter the pores thereof to produce a deeper color than is otherwise obtainable.
In testimony whereof I afiix my signature in presence of two witnesses.
Rom. A. BLAKE, F. W. LANE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85286714A US1155352A (en) | 1914-07-24 | 1914-07-24 | Lithographic plate for offset and direct printing. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85286714A US1155352A (en) | 1914-07-24 | 1914-07-24 | Lithographic plate for offset and direct printing. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1155352A true US1155352A (en) | 1915-10-05 |
Family
ID=3223414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US85286714A Expired - Lifetime US1155352A (en) | 1914-07-24 | 1914-07-24 | Lithographic plate for offset and direct printing. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1155352A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4036130A (en) * | 1974-07-30 | 1977-07-19 | De La Rue Giori S.A. | Intaglio printing plate manufacture |
| US4043815A (en) * | 1972-06-28 | 1977-08-23 | Stephane Klymus | Method of making printing plates for offset printing |
| US4387114A (en) * | 1980-11-20 | 1983-06-07 | Verbatim Corporation | Spindle aperture reinforcement for a floppy disk |
-
1914
- 1914-07-24 US US85286714A patent/US1155352A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043815A (en) * | 1972-06-28 | 1977-08-23 | Stephane Klymus | Method of making printing plates for offset printing |
| US4036130A (en) * | 1974-07-30 | 1977-07-19 | De La Rue Giori S.A. | Intaglio printing plate manufacture |
| US4387114A (en) * | 1980-11-20 | 1983-06-07 | Verbatim Corporation | Spindle aperture reinforcement for a floppy disk |
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