US1191949A - Apparatus for intaglio printing. - Google Patents

Description

F. T. 0011x5 11. APPARATUS FOR INTAGL'I O PRINTING.

APPLICATION FILED JUNE 23| I915.

Patented July 25,1916.

l'iwosnztofn Frederic/i ZZCor/Yptt wzmmesi cmm hkAiiarn ey UNrrn sT TEs PATENT ora ion-1 FREDERICK T. CORKETT, or, ASHTEAD, mamas, ASSIGNOR T0 AMERICAN, LIIHO- GRAPHIC COMPANY, OF NEW YORK, N. Y A CORPORATION OF NEW YORK.

APPARATUS FOR IN TAGLIO PRINTING.

' Application filed June 23, 1915. Serial No. 35,751.

.. the appearance of the product, to control the amount of ink deposited upon the paper, andto assure that the plain portions of the 1 rollers shall carry no ink to the paper.

' apparatus.

The invention is adapted for use in connection with evaporative inks in controlling the quantity of ink deposited by the designed surfaceupon the paper.

, The drawings accompanying this application illustrate an example of my improved In such drawings, Figure 1 is an end elevation of portions of the mechanism, certain parts however, being on'cross section at about the plane of the line 11 of Fig. 2. Fig. 2 is a front elevation of the mechanism. and, Fig. 3 is. a detail of a form of air blast nozzle.

One drawback in the use-of inta'glio or photo-etched rollers in printing is that the unetched portions. no matter how carefully polished, have certain surface imperfections, invisible frequently to the naked eye, but which, nevertheless, rctain ink and convey this to. the portions of .ie paper which are not intended to be inked. Al10tl18I"dlS-. advantage has been that atmospheric conditions, varying conditions of, the paper workedupon, and of the ink, and the overetching of the rolls, has produced undesirable results in the product. The present improvement is designed for providing a controllable regulation for the ink or rather controllable regulation for the amount of ink delivered from the etching to the surface of the paper irrespective oft he amount of ink left on such etching after it has passed the scraper or other ink removing device.

The mechanism herein shown is illustra tive of my improved apparatus and the procedure described is to be understood as being Specification of Letters Patent.

Patented July 25, 1916.

an illustrative example of a meth'odpf using the .same.

T he invention asnow practised in the United States of America employs an etchedsurface of cylindrical form as the design controlled air blast to the freshly scraped surface-of the cylinder prior to the transference of the ink therefrom. Evaporative inks are preferably employedin practising my invention The printing results,' are" governable by proper positioning, and ad-' justment of the nozzle supplying the air,

and by the adjustment of the volume and 7 force of air.

The intaglio printing surface, the photo gravure or etched cylinder 5, inthe illustrationis shown coacting with the pressure cylinder 6. The ink issupplied to the cylinder by a fountain roller'l', from-an ink pan 8. The ink is preferably appliedin a flood, and the surplus removed by a scraper 9, of some suitable construction. Means are shown in the-form of set screws 10 and 11 for scttingthe cylinders or rollers together.

A travelin cushion or blanket 12, is shown interposed fbetween the pressure cylinder .6 and printing cylinder 5 and the web of paper 13. ,Guiding devices are illustrated for the webiof paper and the endless blanket or cushion 19.. The rollers or cylinders 5, 6

and 7 are shown geared together .incldl iven' by a belt l-l and pulley 15. Air, oeing the most readily accessible gas for use in this connection, is mentioned, but it is to be understood that any other suitable gas may also beemployed, the in fredien'ts of the ink and the material of the cylinder determining its character. The air blast in the illustration is furnished by a suitable nozzle adapted to direct the current of air against the wiped surface of the cylinder 5. In the illustration this is in the form of a tube 16 having on its side toward the'cylinder a gent of incidence and the region of application ofthe blast of air. This adjustability is afiorded in the illustration by means of rock arms '18 adapted to be held in their position of adjustment by set screws 18. The tube 16 is shown rotatablyadjustable in the sockets at the ends'of such arms, and set screws 18 are provided for holding it in its position of adjustment therein.

A compressed air reseri'oir is shown at 19 for supplying the air. A flexible tube 20 is shown connecting the tank and tube 16. A stop cock 521 is shown for regulating the air supply. The source of air pressure is not shown. the tank inlet 22 being assumerb to be connected with some suitable source.

The product of my improved apparatus is a clean. well printed sheet or web, wherein the solid colors are flat and unbroken, and the unprinted portions absolutely free from ink or any trace thereof. The lines between the solid color and unprinted portions being sharp and well defined. and associated with this are the tints and blendings going to make up the picture, (by whatever local or trade term. known,-photogravure for instance).

Not 'only does theregulable and locally adjustable air blast eliminate the ink from the unetched portions of the cylinder, but it also renders the exposed surface of the ink at the etched portions more susceptible to the surface of the paper, thereby assuring a transfer oi the maximum quantity of ink from the etched portions of the cylinder to the paper. The quantity of in] transferred, hen this is of the propercvaporativc nature containing the proper volatile ingredients, is readil" controlled by means of this present invention.

As 1 s above pointed out the foregoing is to be understood to be illustrative of my in \cntion, and it is also to be understood that changes may be made within the scope of the claims without departing from the spirit of the invention.

I claim:

1. An apparatus for intaglio printing comprising a. contilnlonsly rotating design cylinder, means for inking such cylinder,

means for removing surplus ink, and means for directing a blast of air against the sur- 3. An apparatus for intaglio printing comprising a design cylinder, means for continuously rotating said cylinder, means for inking said cylinder. :1 scraper for removing the surplus ink, and means for directing a regulable air blast against the scraped portion of the cylinder.

4. An apparatus for intaglio printing comprising a design cylinder. means for inking the same, a pressure cylinder, a scraper between the said cylinders for removing surplus ink. means for directing an air blast against the cylinder between the scraper and the pressure cylinder. and means for adjusting the position of the same between said scraper and pressure cylinder.

V 5. An apparatus for intaglio printing comprising a design cylinder. means for inking the same, a pressure cylinder, :1. scraper between thesaid cylinders for removing smplus ink. means for directing an air blast against the cylinder between the scraper and the pressure cylinder, means for adjusting the position of the same between said scraper and pressure cylinder, and means fpr regulating the blast of air.

' 6. Apparatus for intaglio printing which comprises, a design cylinder, means for inking the same, a scraper for removing surplus ink, and apres ure cylinder and a tube diss posed ldngitudinally of the cylinder between the scraper and pressure cylinder, and provided with a series of holes, rock arms carrying said tube and adapted to adjust the posillblldlllcl'etlf relative to the cylinder, said tube being rotativcly adaptable on said arms. Signed at London, England, this 9th day of June, 1915.

FREDERICK T. CORKETT.

' Correotionin Letters Patent No. 1,191,949.

It is hereby certifiiifii @bat in Letters Potent No. 1,1 91-,949, granted Jul 25, 1916,up0n the applica ti'onof Frederick T corke tt, of Ashtead, England, for an I improvement in Apparatus for Integlio Printing, an error appears in the printed specification requiring correction as follows 2 Page 2, line .35, claim 2, for the word photogrn vure read intaglz'o; pnii that the said Letters Patent should 'be read cae in the Patent Office. 1

Signed and sieailed this 22d day of AugustiA. 1)., 191a.

1mm 1 F. W. n. CLAY,

-Act'ing' Commissioner of Patents. Cl.'1O1-1O4. a

Q with thie jcorreetion therein that the saine may conform to the record of the

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