USRE15286E - schultz ap - Google Patents

Description

0. R. SCHULTZ AND O. KiRSCH. METHOD OF AND APPARATUS FOR MAKING MULTICOLOR PRINTS.

' APFLICATBGN FILED 05022, I921.

Beisauod Feb.14,1922. 1 15,286.

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INVENTORS,

UNITED STATES PATENT OFFICE.

OSWALD. R. SCHULTZ AND OTTO KIRSCH, OF NEW YORK, N. Y.

METHOD OF AND APPARATUS FOR MAKING MULTICOLOR PRINTS.

Specification of Reissued Letters Patent.

Reissued Feb. 14, 1922.

Original No. 1,379,365, dated May 24, 1921, Serial No. 423,889, filed November 13, 1920. Application for reissue filed December 22, 1921. Serial No. 524,288.

T 0 all whom it may concern:

Be it known that we, OSWALD RJSGHULTZ and O'r'ro KIRSCH, citizens of the United States, and residents, respectively, of the city of New York, county of Bronx, and State of New York, and city of New York, county of Kings, and State of New York, have invented new and useful Improvements in Methods of and Apparatusfor Making Multicolor Prints, of which the following is a specification.

This invention relates to theproduction of color prints and has for its particular objectstherapid and economical production of prints which are faithfulreproductions of an originalcopy, .both as to design and color, the same being especially suitable for high speed printing such as is employed in prints can be very materially simplified and at the same time improved upon by means of the invention hereinafter fully set forth and described in detail. I

1n the accompanying drawing forming a part of this specification, we have illustrated a diagrammatic vertical section, partially in elevation, of a novel apparatus designed for carrying out our improved method of producing color prints.

Referrin to the drawings and the construction s own therein reference numerals 1, 1*. 1 designate cylinders or rolls. equipped with offset lithographic plates, the same being supplied with ink from their respective reservoirs 2 through a series of contacting distributing rolls 3, and movable carrier rolls 4: as well as with water from reservoirs 5 through a series of contacting distributing rolls 6 and movable carrier rolls 7 in the manner cu'stomaryqin this art. The aforesaid cylinders are adapted to optionally mesh with a main impression cylinder 8,

each of the cylinders 1, 1, and 1 being in- 66 dependently movable toand fro with reders or rolls.

10, and 11, respectively, and each section is equipped with an individual blanket 9', 10' and 11, respectively, of yielding material, for example "a woven cotton and rubber cloth. Said blankets are wound in the customary inanner on take- up rolls 12, 13 and let, respectively.

A fourth cylinder 15, which we term an intaglio impression cylinder, is alsoadapted to be thrown optionally into or out of impression contact with said impression cylinder 8 by the eccentric Y and the said cylinder 15 is also adapted to be optionally thrown into or out of impression contact with an intaglio cylinder 16. A d'octor or scraper 17 serves to remove ink, supplied from a reservoir 18, from the surface portion of the said intaglio cylinder contacting therewith. I

As an example of the manner of providing a color print in accordance with our invention, we proceed as follows:

Each of the cylinders 1, 1 and 1 is provided with plates such as customarily used in offset lithographic printing and represent only the, portion of the original copy which is intended to be printed in the particular color with which the particular cylinder printing the same is supplied. For example, cylinder 1 will have plates thereon which represent the portion of the print that will correspond to the portion of the original copy that is yellow or a hue or shade that includes yellow in its combination of colors and cylinder 1 and l 'representing respectively'the red portion and the blue portion of the original copy in the same manner. As it is evident from the construction shown, when there are three offset printing 0 linders cooperating with the main impress on cylinder, the external-diameter of each of said offset printing cylinders will be such that the periphery of each of said cylinders will be just one-third of the periphery of the main impression cylinder and as shown, cylinder 1 and 1" will be diametrically opposed to each other and cylinder 1 Y contact with the main iinpre'ssioncylinder- S drawing. Theportion ofthe original opy ivill be diametrically opposed tothe intalio impressioncylinder 15. The cylinder 1 will i.

be supplied with yellow litho-ofiset ink and the cylinders ,l ancl 1 with red and bl'ue litho-oifset ink from their respectivereser yoirs, whereas'the intagliocylinderp '16 will used in printing of blackshacl'es;

be supplied with the usual black intaglio stoppage is advisable tojfsep'aratetheoff- I set printing cylinder froni the main cylinder and immediately take off the ink from the blanket before it dries' by taking an impression therefrom-and then to start up open tions in the manner above described. If desired. the rotogravlire from the cyl' I in'cler 16 canibe' applied directly to the sheet At the commencement. of the operation, of'rnaterial to be printed in lieu of'the aforecylinder 1 only is thro yniintolilnp ressibn this being accomplished at the momentxwhefn the periphery of 1 co nes; immediately I aboye; the edge ofya seetion such asffi fsuchtalposi f tion asl for exampleizswillustrated in: the

whieh is represented by fc'ylinderg 1. {will thereuponbe impressed upon the; blanket '9 '20 rowwfAsLeach successive; sectionpasses besame mpre i n-1 Th yl d hi th g'into i'mPreSsiOnoOHtectQWith:eylinderfi at f; immediately" 'beneath the periphery loft lsaitl cylinder 1 upon cylinder" 1!? will impress I upon" the as the: i repressionvcylinderv is rotated infa clock-wise direction as-lnclic-ated by the arneath the 'cylinder 1, it also will receive the the moment the sect-ion!) reaches] the; tn

{Whiletstill retaining cylinder 1; inyi rnp ression "contact as aforesaid; 1 Thereblanket 9" the portion of. the original 1 copy,

which itfrepresents and this; color fwill be I sn perimposedlonthe color received from cyll at into. compression contact with the .main ims pression cylinder and {thereby the portionof diately, upon seetion: -9arriying at a, point immediately beneath cylinder 15 1 which eare "flriesthepa-per orothern aterial whichit is de:

sired. to print, the said. cylinder 15is thrown,

inder 1 by saidblanket. IAt the moment the f sections!) reaches the point immediately be; neat'h thejcylinder: 1 the latter is thrown-- the original copy representedby the; plates of; eylihderyliwill be siiperi'rn upon'the imprint receiyed, from cylin er 1'5; Imrne into impression contact with" the impresion cylinder S iand asfa consequence the trivcoloriimpress onn receivedv from thethree ofl- Y 1 cylinder 15 by the eecentric-Zf a themomentsetprinting cylinders will be printed upon the paper "Similerlythe intaglio, cylinder; 161 1S thrown intofimpression contact with: the

' when the impresion; on said' paper passes T is i the paperand-thereby those lportionsvof the} beneath the lcylinder min the conse eve-1 s tha a: mtQ- vu e; p t ll. be i superunpoeed upon the impression earriedlby 3 OlflglllltlCOPj; whichcorrespond,totheshadeswill be received from-said intagilio cylinder,

- .I1;order,to"prevent: astemfink andthe" of the main; impression; cylinder, we provide thesaad' apparatus with wellknow n'niecha accumulation .of the same n ponfthe blanket I 'nisrnf-',for vstopping: the-machine in ithejeven t :aLbjrealr in the paper, or other materialbemgg prmted, 0f course in theevento f sheh' said jincomplete eo nposite tri-color jprint taken' tofl" from] the main impression cylinder, 1. e. the direction, of travel of the sheet and 1 therespectiye; rolls can be eversed to reeeiye the intaglio" imprint first andthen thesa id incomplete composite triec'olor print.

such an event, however it'would be neces; v

impressionficylinden and in theQpath ofo the' sheetbeingjjbrintedl y 1 N n Ofin'nventiomIwhieh is applicable aliketo the -printingvofpaper or textile; renders it.

its

possibleto producemonn continuous webpresses; i even. more faithful reproductions than "is" obtained labo-rous ofiset "lithegraphic processes when employing as; many as six'oolors- Fnrther advantages are the virtual elimination low ing the register be ng: posit e ,thr ughou m R gh r di cillties such asyere experienced in ordinary oifsf etcol r .v vhereinthesheettravelgv over, numerous cylinders during" the applfrcation of theeolor thereto and the rediiction to a minimum of the possibilty o f' blursoe, curring due to stretching "of thelar e blankets employed in ,Inost offset color printing vfBesidesthe latter adyanta'gein respect;

to; ininimiiing blurs small seetionsi 0i blankets need are far 1' easier and more Teco nom ical to replac when; soiled orgworn than; arezthe large blankets-us ia.llyemployed in u wo k- 1- v a iou ;ehangs ings}g eimtd iv thi nlthe sc p d-"th p n ea time w t iut d pa f 1 ing from the spirit'ofon'r'invention. I

The yarioins cylinders are of eourse naled in beerlngs and cohneeted in therwell known i manner with powerloperated driving 1 1F urtherrnorejthe; ,varieus disolls shown are of the well-know 11 nt e med at Pr ent i1 5 u in i v i nT e webi; r; S a t r we sel h n ee 'ie' y ind r frtqml hic it art aI fl tQm Xm he an l n o qro grevureprints W i a a M y receives mde t Prm p course" dried i the usua -In practising ouninyentionfyvemnch pre-.

ferto employ the ordinary p'lanographie,

( -6-1 u fa e. p in ng) plates, on' the i ofiset printingrollsl,v lfand 1 as distinguished from the "employment thereon. of intaglio or the incomplete removal of same by the sheet being printedand as a consequence clean printing inthis manner from such plates,"as distinguished from the planographic plates commonly used in offset printingyw'ouldbe diflicult, if not impossible. 1 a

While ofi'set printing has certain advantages in that the yielding blanket comperi sates for irregularities in-the paper, as distinguished from direct printing wherein'an unyielding metalplate is in. contact with the paper,thus enabling one to reproduce delicate shades very faithfull ,nevertheless, one of the objections to the 0' set printing is the fact that one cannot produce the key color varying from the intense depths up to the finest gradatlonsof tones-as ispossible when all gradations a direct intaglio print i'n '*the-"key '-color is superimposed in the manner herein described. Accordingly, our process, while enabl'in one to utilize the advantages of'the intag io for the key color andjthus obtain of 'color from the intense depths to the softest tones, at the sametime reserves all the advantages of-offsetprint: lng including that of the relatively cheap cost of same. i

The term.blanket.as {used inthe claims I is a term well'understood in the art to indicate yieldin impression-receiving means and commonly consists of a built-up rubber:

and-fabric sheet, although obviously it may be made of any suitable material capable of offering the necessary yielding support or im. act desirable in this art.

he term sheet as used in the claims includes,

of course, either onegof a series of separate sheets'or a single continuous sheet such asaweb.

The'term key color as used in the claims is intended to denote the master or ground color in which the deepest shades as well as some of the most delicate tints appear in the finished print.

Having thus described ourinvention, what we claim and desire-to secure by Letters Patent is:

1. In a \press, for making color prints, the combination cdmprising a main v impression cylinder, blanket means supported thereby,

. a plurality of ofiset color-printing cylinders adapted to yieldingly's'upport and a sheet to be printed, all geared tosaid main cylinder, the

eriphery of said latter cylinderv being at east the equal of the combined peripheries of all the offset color-printing cylinders aforesaid, an intaglio printing cylinder in gear with such supplemental cylinder and 05 adapted to have impression contact with superimpose registering impressions 9 9a intagIidQprmting"cylinder geared to said supplemental. impression cylinder and means a supplemental impression cylinder,---:

.cy'li ders "and a supplemental impression cylinder, adapted to yieldingly support a sheet to be printed, all geared to said main cylinder,

the" periphery of said latter cylinder being at least the equal of the combined peripheries of all the offset color-printing cylinders aforesaid, an intaglio printing cylinder in gear with such supplemental cylinder and adapted to have impression, contact with such sheet when the same is suppored on said supplemental impression cylinder, means for supplying ink to said offset printing cylinders and means for optionally throwing said offset printing cylinders into and out of impressioncontact with said blanket means.

I 3. In a press for making color prints, the combination comprising a main impression cylinder, blanket means supported thereby, a plurality of printing cylinders all of the same, periphery, adapted to successively directly upon said blanket means, a supplemental impression cylinder, also of the same diameter aseacli printing cylinder, adapted to serve as a support for a sheet of material'to be printed, means for optionally throwing said printing cylinders and said supplemental cylinderinto and out of impression contact wi said main cylinder, and the periphery of the latter cylinder being at least the. equal of the combined peripheries of all the 'printing'cylinders aforesaid, an

intaglio printing cylinder in gear with said supplemental impression cylinder. and of substantially equal diameter therewith and means for supplying ink to said printing cylinders andsaid intaglio cylinder.

4. In a press forv making color prints, the combination comprising a main impression cylinder, blanket means supported thereby, a

plurality of offset, 'cOIorTprinting' cylinders anda supplemental impression cylinder all geared to said main cylinder, the periphery of "'said, latter cylinder being; at least the equal of thelcombined peripheries of all the tinting cylindersaforesaid, an

for option I I lly throwingsaidofi'set printing "into and out of impression contact blanket, a supplemental impression cylinder adapted to serve as a support for a sheet of material to be printed, means for optionally throwing said printing cylinders and said supplemental cylinder into and out of impression contact with said main cylinder, and the periphery of the latter cylinder being at least the equal of the combined peripheries of all, the printing cylinders aforesaid, an intaglio. printing cylinder in gear with said supplemental impressioncylinder and means for supplying ink to said printing cylinders and said lntaglio. cyl- J index.

6. In a press for making color prints; the combination comprising printing means .for producing an incomplete multi-color .ofl'set composite impression upon a sheet of material to be printed and roto-gravure means for imprinting directly upon said sheet an impression from an intaglio cylinder in register with such incompletecomposite impression. I

7. In a press for making color prints, the sub-combination comprising a main impression cylinder, blanket means supported thereby, azplurali-ty of printing cylinders equipped with printing plates on the peripheries thereof and a supplemental impression cylinder, adapted to yieldingly support a'sheet'to be pi-inted,all geared to said main impression cylinder, an intaglio printing cylinder in gear with the latter cylinder,

and means for optionally throwing said printing cylinders int-o andout of impression contact with the blanket means on said nrain impression cylinder.

8; The continuous method of making color prints,which cimsists in successively takinlgofl upon a liilanket registering impressionsfrom a. plurality of moving ofiset colorprinting surfaces, then taking oil a composite impression from said blanket onto a sheet of material to be printed and then taking ofi" an impression in register with said composite impression on said" sheet from an intaglio plin'ting surface.

9. The continuous method of making color prints, ing off upona blanket" 'istering imipres sions -in difierentcolors respectively from a plurality of movingoliset color-printing surfaces, each ol" said .ing only the bcf reproduced "Wll ch is intended to be printed in "the 'izin-tu'rular ruili'ir'of said imimpressions represent -sheet of'material to be-'printed,

which consists in. successively tak iortion of the mi imal co 1 r to pressiomthen taking. off the composite impression so made from said blanket onto a sheet of material to be printed and then directly "superimposing upon said composite impression a registering impression from an intaglio printing cylinder consisting of that portion of the original which was absent from such oflset impression.

10. The continuous method of making color prints, which consists in successively taking off upon a blanket registering impressionsin different colors respectively from a plurality of mowing ofi'set colorprinting surfaces, each of said impressions representing only the portion of the original copy to be reproduced which is intended to be printed inthe particular color, of said impression, then takingofl the composite impression so made from" said blanket onto a sheet of material to be printed,then superimposing in register with, said latter impres sion an impression from an intaglio printing cylinder which latter impression represents the portion of the original copy to be reproduced that is intended to appear as shades.

11. In the continuousmethod of making color prints, the stepswhich comprise the successive taking off upon a blanket of registering impressions in different colors respectively from a plurality of moving offset color-printing surfaces, transferring such multi-color composite impression from said blanket to a sheetof material to be printed, then directly superimposing upon said composite impression on such'sheet a. registering impression from an inta glio printing cylinder which latter impression corresponds to that portirm ofthe originalwhich was absent from. said multi-colorimpression offset upon. said sheet.

12. The method. of making color prints, which consists in first offsetting upon a a plurality of registering impressions from separate offset printing rolls and then directlysuperin'iposing upon such composite impression an in'ipression from an. intaglio printing plate, said iutaglio impression being in the OSWALD n. SCHULTZ. OTTO mason.

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