US1863976A - Lithographic or offset printing plate - Google Patents
Lithographic or offset printing plate Download PDFInfo
- Publication number
- US1863976A US1863976A US414570A US41457029A US1863976A US 1863976 A US1863976 A US 1863976A US 414570 A US414570 A US 414570A US 41457029 A US41457029 A US 41457029A US 1863976 A US1863976 A US 1863976A
- Authority
- US
- United States
- Prior art keywords
- printing plate
- lithographic
- offset printing
- graining
- grained
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
- E03B3/20—Well filters of elements of special shape
-
- 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
- B41N3/04—Graining or abrasion by mechanical means
Definitions
- the graining is imparted to the printing plate by a pressing or rolling impression of a grained working surface.
- a printing plate of mouldable material thus receives a surface grain effect dependent upon the grain of the workin surface.
- the graining may also be effected, clearly defined locally, only on certain parts of the printing plate and the -graining only takes a minimum amount of time and is much cheaper than all the methods hitherto customary.
- a level grained surface may be used which is applied by stamping or pressin or a suitable roller may be used which rol sits grain on.
- the graining of the printing plate can be effected on one or both sides. The latter method is particularly adopted in the case of thin printing sheets of office machines (see German Patents 204,517 and 410,168), the graining being used to impart a better hold for the glue (or size) of printing-plates coated at the back with paper or the like.
- similarly acting materials such as celluloid, varnished surfaces and the like may also be applied to the grained rear side.
- FIG. 1 and 2 are respectively perspective views of different forms of the invention.
- a long web or ribbon of extremely thin lithographic metal is shown at 1, together with a base plate or lower die 2.
- the upper die 3 is preferably provided with a -grained or roughened surface 4. Now if the die 3 is depressed upon the web 1 periodically, grained surfaces 7 are formed upon the web 1. Obviously, if the lower die 2 is also provided with a grained or roughened surface, corresponding grained surfaces 7 will also be formed on the back face of the web 1.
- Fig. 2 is almost identical with Fig. 1 except that the dies 2 and 3 are replaced by rollers 5 and 6.
- ⁇ Vhat I claim is 1.
- the step of graining the face and the back of the plate by a pressing action producing a large number of depressions simultaneously.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Description
June 21, 1932.
F. FISCHER LITHOGRAPHIC OR OFFSET PRINTING PLATE Filed Dec. 16, 1929 Era 1 11 Q/zq/ 786Aer /n venfor':
Patented June 21, 1932 PATENT OFFICE FERDINAND FISCHER, OF BERLIN, GERMANY LITHOGRAPHIC OR OFFSET PRINTING PLATE Application filed December 16, 1929, Serial No. 414,570, and in Germany December 24 1 928.
- the former the common disadvantage of occupying considerable time.
In order to eliminate the disadvantages of these methods and to render the production of printing plates as economical as possible,
' according to the present invention, whilst utilizing an existlng, previously prepared working mould, the surface grain is imparted to the printing plate by plastic moulding.
For example, the graining is imparted to the printing plate by a pressing or rolling impression of a grained working surface. A printing plate of mouldable material thus receives a surface grain effect dependent upon the grain of the workin surface. The advantage of this method is as follows :-The graining of all printing plates produced with the same working surface is absolutely equal and if certain spheres of utility require another form of graining it is merely necessary to use another working surface.
The graining may also be effected, clearly defined locally, only on certain parts of the printing plate and the -graining only takes a minimum amount of time and is much cheaper than all the methods hitherto customary. As working surface a level grained surface may be used which is applied by stamping or pressin or a suitable roller may be used which rol sits grain on. The graining of the printing plate can be effected on one or both sides. The latter method is particularly adopted in the case of thin printing sheets of office machines (see German Patents 204,517 and 410,168), the graining being used to impart a better hold for the glue (or size) of printing-plates coated at the back with paper or the like. Instead ofa pastedon coating, similarly acting materials, such as celluloid, varnished surfaces and the like may also be applied to the grained rear side.
In the accompanying drawings, which illustrate two forms of my invention by way of example, Figs. 1 and 2 are respectively perspective views of different forms of the invention. I
.In Fig. 1, a long web or ribbon of extremely thin lithographic metal is shown at 1, together with a base plate or lower die 2. The upper die 3 is preferably provided with a -grained or roughened surface 4. Now if the die 3 is depressed upon the web 1 periodically, grained surfaces 7 are formed upon the web 1. Obviously, if the lower die 2 is also provided with a grained or roughened surface, corresponding grained surfaces 7 will also be formed on the back face of the web 1.
Fig. 2 is almost identical with Fig. 1 except that the dies 2 and 3 are replaced by rollers 5 and 6.
\Vhat I claim is 1. In the manufacture of lithographic printing plates of moldable material, the step of graining the face and the back of the plate by a pressing action producing a large number of depressions simultaneously.
2. In the manufacture of lithographic printing plates of moldable material, the step of graining the face and the back of the plate by a pressing action producing a large number of depressions simultaneously and applying acoating to said grained back.
In testimony whereof I affix my signature.
FERDINAND FISCHER.
ion
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE342837X | 1928-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1863976A true US1863976A (en) | 1932-06-21 |
Family
ID=6242121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US414570A Expired - Lifetime US1863976A (en) | 1928-12-24 | 1929-12-16 | Lithographic or offset printing plate |
Country Status (5)
Country | Link |
---|---|
US (1) | US1863976A (en) |
BE (1) | BE365908A (en) |
FR (1) | FR685601A (en) |
GB (1) | GB342837A (en) |
NL (1) | NL49521C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2534588A (en) * | 1946-08-19 | 1950-12-19 | Warren S D Co | Paper base planographic printing plate |
US3044202A (en) * | 1954-05-20 | 1962-07-17 | Lindmark Johan Gunnar | Half-tone color prints |
US3223032A (en) * | 1963-10-04 | 1965-12-14 | Hercules Powder Co Ltd | Graining process |
US3651759A (en) * | 1966-03-31 | 1972-03-28 | Gerhard Ritzerfeld | Printing forms |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891443A (en) * | 1973-02-01 | 1975-06-24 | Polychrome Corp | Mat finish photosensitive relief plates |
AT356145B (en) * | 1977-07-25 | 1980-04-10 | Teich Ag Folienwalzwerk | METHOD FOR PRODUCING BASE MATERIAL FOR OFFSET PRINTING PLATES |
JP3066685B2 (en) * | 1992-06-11 | 2000-07-17 | 富士写真フイルム株式会社 | Method for producing a lithographic printing plate support |
-
0
- BE BE365908D patent/BE365908A/xx unknown
- NL NL49521D patent/NL49521C/xx active
-
1929
- 1929-11-26 FR FR685601D patent/FR685601A/en not_active Expired
- 1929-12-16 GB GB38531/29A patent/GB342837A/en not_active Expired
- 1929-12-16 US US414570A patent/US1863976A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2534588A (en) * | 1946-08-19 | 1950-12-19 | Warren S D Co | Paper base planographic printing plate |
US3044202A (en) * | 1954-05-20 | 1962-07-17 | Lindmark Johan Gunnar | Half-tone color prints |
US3223032A (en) * | 1963-10-04 | 1965-12-14 | Hercules Powder Co Ltd | Graining process |
US3651759A (en) * | 1966-03-31 | 1972-03-28 | Gerhard Ritzerfeld | Printing forms |
Also Published As
Publication number | Publication date |
---|---|
BE365908A (en) | |
GB342837A (en) | 1931-02-12 |
FR685601A (en) | 1930-07-12 |
NL49521C (en) |
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