US2806425A - Process for preparing inking rollers for multicolor inking of a printing plate - Google Patents

Process for preparing inking rollers for multicolor inking of a printing plate Download PDF

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Publication number
US2806425A
US2806425A US140028A US14002850A US2806425A US 2806425 A US2806425 A US 2806425A US 140028 A US140028 A US 140028A US 14002850 A US14002850 A US 14002850A US 2806425 A US2806425 A US 2806425A
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US
United States
Prior art keywords
printing
plate
inking
rollers
printing plate
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
Application number
US140028A
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English (en)
Inventor
Giori Gualtiero
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Individual
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Individual
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Filing date
Publication date
Priority to BE498805D priority Critical patent/BE498805A/xx
Priority to NL79012D priority patent/NL79012C/xx
Application filed by Individual filed Critical Individual
Priority to US140028A priority patent/US2806425A/en
Priority to CH290601D priority patent/CH290601A/fr
Priority to DEG1256A priority patent/DE943355C/de
Application granted granted Critical
Publication of US2806425A publication Critical patent/US2806425A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/005—Coating of the composition; Moulding; Reclaiming; Finishing; Trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/14—Multicolour printing
    • B41M1/20—Multicolour printing by applying differently-coloured inks simultaneously to different parts of the printing surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers

Definitions

  • a PRINTING PLATE My invention relates to printing processes, and more particularly to a multicolor printing process of the kind in which a single printing plate is inked with several colored inks distributed on zones upon said printing plate. It refers, still more particularly, but not exclusively to a method for preparing printing plates and inkingrollers from a single original plate for intaglio printing.
  • One object of the invention is to produce a print where the color in the different zones are positioned therein with extreme accuracy.
  • Processes for multicolor have been known for many years.
  • One of the oldest processes consists in inking by hand a single printing plate with several inks of different colors, spread over separate or adjacent areas on the plate, which is then printed on a paper or other suitable material. All the colors are thus printed in a same operation. Many art engravings are printed in colors this way.
  • the coating of resilient material was cut oh by hand or by chemicals so as to leave only certain protruding zones corresponding to the area of the printing plate that should be inked with that particular ink. If a print in two colors, for instance, was to be made, two auxiliary inking rollers were prepared and each one was inked with a different ink. Thereafter the two rollers were passed upon the printing plate or cylinder, so as to deposit the two inks on the corresponding areas of the surface of the printing plate. If the printing plate, hear ing the .two inks, was pressed against a sheet of paper, a bicolor print Was obtained through only one printing operation.
  • the auxiliary inking rollers in accordance with that process were prepared or made as follows: the printing plate was first made and inked with any ink. Then the auxiliary inking rollers, covered with a uniform coating of resilient material, were rolled upon the printingplate in order to obtain a printon their surface. As many inking rollers were prepared that way as colors were to be finally printed. The print on their surface was a guide Patented Sept. 17, 1957 2. for cutting off from each one of them the areas which had to be inked by another inking roller or rollers.
  • the intaglio printing differs from the letterpress printing because in the first place the printing surfaces are depressed and in the second place the printing surfaces are protruding. This causes the necessity, during the inking of the intaglio plate, to exercise a certain pressure of the inking roller against the printing plate in order to fill the grooves of the plate with ink.
  • the inking rollers are given (as it has previously been done) a circumference corresponding to the length of the printing plate, when they are pressed and rolled upon the printing plate surface their radius shortens and, as a consequence, the ink deposited on the printing plate covers an area smaller than the area that ought to be inked.
  • One of the fundamental principles of my invention for obtaining an always identical multicolor intaglio print consists of inking rollers, which instead of having a circumference corresponding exactly to the length of the printing plate, as in other known processes, have a circumference greater than the length of the printing surface of the printing plate.
  • This increase of the circumference of the inking roller is calculated so as to make the distance between the printing plate surface and the axle of the inking roller, during the inking operation, be the radius of a circumference corresponding exactly to the length of the printing surface of the printing plate.
  • the method I invented essentially consists in: engraving a matrix printing plate in any suitable way; marking it with reference marks (lines, angles, etc); taking from this matrix plate, thus marked, as many identical printing plates as required for printing pur poses and an extra printing plate; placing on the extra plate a transparent sheet of film on which lines demarking the areas to be inked in the plate and lines corresponding to the marks on the plate are drawn; making the extra plate photographically sensitive after taking oif the film; taking a photographic copy of the drawn sheet on the sensitive extra plate; etching the lines thus reproduced on the extra plate thus obtaining a plate identical to the matrix but bearing the areas demarking lines; moulding inking rollers having a per:
  • Figure 1 shows part of a, printing plate, containing a number of engravings or units, and a film placed upon one of the units;
  • Figure 2 shows the film on which the angles of a unit have been drawn as reference marks
  • Figure 3 shows the film on which the lines demarking the several colored areas have been drawn
  • Figure 4 shows an angle of the, extra plate, which will be called hereinafter marking plate, on which the lines demarki-ng the several color areas have been etched.
  • I begin by making the printing plates.
  • the printing of a high number of prints requires the use of a plurality of intaglio or letterpress printing plates that must be absolutely identical and the use of a plurality of inking rollers which also must be absolutely identical and always identically cut.
  • I make, by any known method, and preferably by means of the electroforming process a metallic matrix plate.
  • On the metallic matrix some reference marks at the angles -of the drawings or in any suitable place, and two horizontal lines, at the top and bottom of the engraving and at a certain distance from the upper and lower edges and exactly parallel to these edges are engraved.
  • the plate bearing cylinder of the printing pres I preferably use for printing in accordance with my method (which press is the subject matter of my United States Patent No. 2,659,305 issued November 17, 1953) bears on its border a millimetric scale.
  • the horizontal lines engraved on the plate allow the perfect mounting in po sition of the plates on the cylinder, thus insuring that all the successive printing plates mounted on the press be in an identical position.
  • a transparent sheet or film 2 is fixed and on this film the exact position of the engraved drawing angles are drawn.
  • Figure 2 shows the film on which angles 4, 4, 4" and 4 have been drawn. These angles correspond exactly to the angles 3, 3', 3" and 3" of one of the engraved units shown in Fig. 1.
  • the divisor-y lines of the various areas to be inked in several colors are drawn on the film (see Fig. 3). Letters or numbers corresponding to each color, and there fore to each inking roller, are also written on the film: in the example of Fig. 3 letters A, B, C, D and .E have been drawn.
  • the fitlm thus prepared will be called hereinafter Selection Guide.
  • thelines enclosing the areas to be inked may be drawn on the'film on the basis of the drawing to be printed, or may be drawn so as to form geometrical or fanciful designs particularly for the background areas.
  • All these operations may be reduced to only one if one has a photomechanical multiplying machine wherein the selection guide and the marking plate, which has been previously made sensitive, may be placed to print on the latter automatically the selection guide as many times as are the units on the plate.
  • the marking plate 11 serves to mark the inking surface of the inking rollers, which bear a coating of resilient material or are totally made from resilient material.
  • Said rollers may be formed in any suitable Way (injection, extrusion, application of sheets obtained through calendering) but it is necessary to exclude in the composition of said coating any hygroscopic material (as it has been done in other processes) in order to avoid that in consequence of changes of temperature and especially of moisture, the coating suffers changes which would modify the inking areas. This would render impossible the attain,- ment of an always identical multicolor printing.
  • the coating of the inking rollers has to be performed so they will be perfectly concentrical, with their periphery always identical and with a surface particularly capable.
  • the printing plates and the inking rollers made as stated above, may be mounted in any suitable printing press for printing the final prints, but the best results are obtained if they are used in the printing press of my invention, which is the object of Patent No. 2,659,305.
  • Said printing press comprises means to regulate the pressure of the inking rollers against the printing plate allowing thus the control of the deformation of the inking areas of the rollers; and a printing plate bearing cylinder having a curvature corresponding to that of the respective sector of the transferring apparatus herein described, so that no differences due to different deformation of the printing plate and the marking plate may arise.

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  • Printing Methods (AREA)
US140028A 1950-01-23 1950-01-23 Process for preparing inking rollers for multicolor inking of a printing plate Expired - Lifetime US2806425A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE498805D BE498805A (es) 1950-01-23
NL79012D NL79012C (es) 1950-01-23
US140028A US2806425A (en) 1950-01-23 1950-01-23 Process for preparing inking rollers for multicolor inking of a printing plate
CH290601D CH290601A (fr) 1950-01-23 1950-02-04 Procédé de préparation d'au moins un cliché d'impression et de rouleaux encreurs, et machine pour sa mise en oeuvre.
DEG1256A DE943355C (de) 1950-01-23 1950-03-09 Verfahren zur Herstellung von mit nachgiebigem Werkstoff ueberzogenen oder aus nachgiebigem Werkstoff bestehenden Einfaerbewalzen zur Verwendung im Mehrfarben-Stahlstichdruck und Vorrichtungen zur Durchfuehrung des Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140028A US2806425A (en) 1950-01-23 1950-01-23 Process for preparing inking rollers for multicolor inking of a printing plate

Publications (1)

Publication Number Publication Date
US2806425A true US2806425A (en) 1957-09-17

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ID=22489400

Family Applications (1)

Application Number Title Priority Date Filing Date
US140028A Expired - Lifetime US2806425A (en) 1950-01-23 1950-01-23 Process for preparing inking rollers for multicolor inking of a printing plate

Country Status (4)

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US (1) US2806425A (es)
BE (1) BE498805A (es)
CH (1) CH290601A (es)
NL (1) NL79012C (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045591A (en) * 1958-11-13 1962-07-24 Goebel Gmbh Maschf Process for the production of shaped inking rollers for steel engraving or intaglio printing

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US565891A (en) * 1896-08-18 Art of multicolor printing
US1108063A (en) * 1911-07-05 1914-08-18 Pierre Bonnier Process of color-printing.
US1260824A (en) * 1913-11-29 1918-03-26 American Bank Note Co Art or method of multicolor-printing from intaglio or undersurface printing-plates.
US1271949A (en) * 1917-09-28 1918-07-09 Multicolor Intaglio Press Company Method of printing.
US1276697A (en) * 1915-11-20 1918-08-20 Louis John Hertlin Process for producing printing-plates.
US1534292A (en) * 1922-10-23 1925-04-21 Sidney Blumenthal & Company In Art of color printing
US1547776A (en) * 1924-08-14 1925-07-28 Ball Jay Otis Form of plates and rollers to ornament sheet materials
GB334183A (en) * 1929-05-22 1930-08-22 Serge Beaune Improvements in and relating to mechanical printing processes
US2000094A (en) * 1932-09-14 1935-05-07 Peterson Victor Art of printing
US2036835A (en) * 1933-12-08 1936-04-07 Miehle Printing Press & Mfg Transfer method and means
US2303646A (en) * 1941-07-16 1942-12-01 Myron A Lathey Plate printing machine
US2349900A (en) * 1940-06-10 1944-05-30 Albert R Bourges Method of making color reproductions
US2499870A (en) * 1946-06-21 1950-03-07 Cottrell C B & Sons Co Means for and method of offset printing

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US565891A (en) * 1896-08-18 Art of multicolor printing
US1108063A (en) * 1911-07-05 1914-08-18 Pierre Bonnier Process of color-printing.
US1260824A (en) * 1913-11-29 1918-03-26 American Bank Note Co Art or method of multicolor-printing from intaglio or undersurface printing-plates.
US1276697A (en) * 1915-11-20 1918-08-20 Louis John Hertlin Process for producing printing-plates.
US1271949A (en) * 1917-09-28 1918-07-09 Multicolor Intaglio Press Company Method of printing.
US1534292A (en) * 1922-10-23 1925-04-21 Sidney Blumenthal & Company In Art of color printing
US1547776A (en) * 1924-08-14 1925-07-28 Ball Jay Otis Form of plates and rollers to ornament sheet materials
GB334183A (en) * 1929-05-22 1930-08-22 Serge Beaune Improvements in and relating to mechanical printing processes
US2000094A (en) * 1932-09-14 1935-05-07 Peterson Victor Art of printing
US2036835A (en) * 1933-12-08 1936-04-07 Miehle Printing Press & Mfg Transfer method and means
US2349900A (en) * 1940-06-10 1944-05-30 Albert R Bourges Method of making color reproductions
US2303646A (en) * 1941-07-16 1942-12-01 Myron A Lathey Plate printing machine
US2499870A (en) * 1946-06-21 1950-03-07 Cottrell C B & Sons Co Means for and method of offset printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045591A (en) * 1958-11-13 1962-07-24 Goebel Gmbh Maschf Process for the production of shaped inking rollers for steel engraving or intaglio printing

Also Published As

Publication number Publication date
CH290601A (fr) 1953-05-15
NL79012C (es)
BE498805A (es)

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