Патент USA US2112188код для вставки
March 22, 1938. H. WOODHEAD APPARATUS FOR 'INTAGLIO OR. THE LIKE PRINTING Filed Dec. 5, 1936 lwuxiIm 2,112,188 2,112,188 Patented Mar. 22, 1938 ATENT OFFICE UNITED STATES 2,112,188 APPARATUS FOR INTAGLIO OR THE LIKE ' PRINTING Harper Woodhead, Blackborough, near Gul lompton, England Application December 5, 1936, Serial No. 114,510 In Great Britain July 24, 1935 1 Claim. (Cl. 101-194) This invention relates to a process and appara tus for intaglio and other printing which is par ticularly applicable for example, to bank note printing. 5 ' In intaglio printing it is usual to use a sepa rate plate for the making of each colour impres sion on the paper or the like to be printed, but it has been suggested to use a single plate and apply colour to localized areas of this from ink 10 ing pads cut'away according to the particular area to be inked by each of them. In the process of the present invention, how ever, a single plate is provided throughout its surface with a ground colour and colours are 15 then superimposed on said ground colour on ‘ the plate from separate inking pads. The invention is more particularly described with reference to the accompanying drawing in which:-— - 20 Figure l is a plan view of one form of machine. Figure 2 is a section on the line I--I of Figure 1. Figure 3 is a section on the line II--II of Fig ure 1 and on the lines III-III, and IV-IV of Figure 1. 25 Figure 4 is a section on the line V-—V, of Fig ure . Figure 5 is a section on the line VI-VI, of Fig. ure 1. The machine comprises a rotary table I having sockets for the reception of printing plates 2 to tion on the table, comes to this station. This pad II is inked by a reciprocating set of rollers l2, taking up a colour from a rotary plate 13 inked from a roller I4 and ink supply l5 similar to the plate 5, roller 4 and ink supply 3 at stag tion I. By ‘this means there is imposed on the matrix or plate 2 completely covered with ground colour, a pattern corresponding to the pattern engraved or otherwise formed on the pad ll. Similar arrangements to Figure 3 are disposed in at stations III and IV, for the application of a second and third coloured imprint upon the background. It is obvious however, that any num ber of stations may be provided for providing any number of superposed colour layers by simi- 15 lar means. Three colour layers superimposed over a ground colour are shown in the accom panying diagrammatic drawing solely by way of example. At the station V, of the rotary table I, a sheet 20 or sheets of paper, metal or the like to be printed may be printed from the printing matrix or plate 2 in any desired known manner, and at station VI, the printing plate or matrix 2 may either be interchanged for another or be cleaned in N) 5 readiness for the commencement of a fresh cycle. In order to print the sheet of paper or the like at station V, this is fed by grippers H5 at each side which carry it over the rotary table to the exact position over the engraved plate or 30 be inked, which plate may be in the form of a printing matrix 2, whereupon a platen descends wood block, a stereo, an intaglio or etched plate for the impression to be taken. After the platen has receded relatively to the table, the grippers or any other type of printing surface. l6 returning from above draw the paper away In the machine shown by way of example, the from the plate commencing at a part nearest the 35 rotary table I has six sockets, so that six opera center of the table in order to counteract the pull ca tions can be performed in sequence in one opera tion on one plate taking place simultaneously or adhesion of the inked plate to the paper. At station VI the plate may either be cleaned with a diiferent operation on another plate. At the station I radial to the table l is arranged by hand, or automatically by brushes or pads I‘! 40 40 an ink supply hopper 3, from which ink is taken or both disposed at varying angles. I declare that what I claim is:-— up on to an inking roller 4, and transferred to A printing machine comprising a rotary table, a rotary inking plate 5. Ink is transferred from the plate 5 to an inking plate 6 by means of a ‘means to secure a plurality of similar printing plates thereon, inking means operable opposite set of rollers ‘l on a reciprocating frame, 8, which one point of said rotary table to transfer colour 45 45 frame also carries a second set of inking rollers 9 for transferring ink from the inking plate 6 to to each plate in turn, doctor means to remove the printing plate 2. This frame 8 may also excess colour from the plate, a plurality oi ink pads bearing differential patterns and disposed carry a hinged doctor H! for removing super 3 ?uous ink from the plate 2. At station I, the 50 ink applied to the plate 2 is preferably in the form of a ground colour, usually a grey, neutral tint, which becomes subservient to tints or colours subsequently to be applied. _ A block, pad, or other intaglio surface. H is 55 disposed at the next station II to reciprocate in a plane at right angles to the surface of the printing matrix 2 to be inked, which in its rota in‘ spaced relationship angularly around said table, means to apply colour to each of said pat 50 terned pads in turn, means to apply each pat terned pad in turn to each plate in turn, and means to obtain a printing impression from each plate in turn when it has received the various colour impressions. HARPER WOODHEAD.