US1261292A - Note or check and process of printing the same. - Google Patents

Description

L. REECE.

NOTE 0R CHECK AND PROCESS OF PRINTING THE SAME.

- APPLICATION FILED MAR. 16, 1909- L261,292., Patented Apr. 2,1918.

W,Q@2Z w Maj Thnafluhfl Una Cnm pm [M /1mm so/uM? ('22 wafer WITNESSES w I lNl/EA/I'Ol? LLEWELLYN REECE, OF NEW YORK, N. Y.

V Specification of Letters Patent.

Patented Apr. 2, 1918..

Application filed March 16, 1909. Serial N 0. 483,747.

To all whom it may concern. I

Be it known that I, LLEWELLYN REEGE, a subject of the'King of Great Britain, and a resident, ofthe city of New York, borough of Manhattan, in the county and Stateof New York, have invented a new and Improved Note or Check and Process of Printing the Same, of which the following is a full. clear, and exact description.

My invention relates to negotiablein'struments and othercommercial paper printed upon what is commercially known as safety paper,- and the process or method of producing this paper, and these notes, checks or other commercial papers.

The main object of my invention is to provide safety paper of the character described wherein the ground color while helng highly sensitive to chemicals which might be used thereon, will be' insensible to moisture so as to avoid the smutting of the paper through the ordinary handling there not be merely superficial.

through erasure and difiicult, if not impossible.

of. A further-object is to provide a paper of the character above referredto, wherein the fibers of the paper will be so permeated with the coloring matter as to cause any chemical, which might be applied thereto for the purpose of removing the color, to

act upon the fibers thereof in a manner so I as to deface it and prevent its restoration to its former condition, thus making forgery restoration extremel A still further object is toprovide a safety paper wherein the chemically sensitive coloring matter will And a still further object is to provide aprocess for printingormaking this safety paper which will incorporate a ground color in the paper in a manner to not only render this color waterproof, but at the same time make it sensitive to such-chemical reagents as are ,psed for removing ground color.

The invention consists primarily in the process of making safety paper for negotiable instruments and other commercial paper, embodying therein printing upon paper with a chemically sensitive water-soluble ink, subjecting said paper to a drying procthe water soluble final drying step;

out the several views.

or other negotiable instrument after having been subjected to the first step in the process orafter having been impregnated with ink. i

Fig. 2 is a vertical section showing the article while being treated in the fixing bath;

Fig. 3 is a viewillustrating the third step in the process or the washing of the product to remove the vehicle therefrom;

Fig. 4 is a view illustrating the fourth or and Fig. 5 illustrates the final step or the treatment by a supersensitizing solution.

Like letters refer to like parts through- In the practice of my invention, I apply to the surface of a sheet of paper a coating of a coloring matter carried by a water soluble vehicle, this vehicle preferably consisting of a composition consistlng of. gum

arabic, 82%, glycerin 48% and water 20%. To this vehicle I add coloring matter in such proportions as to secure the intensity of the color desired, from five to ten per cent. of this coloring matter having been found in actual practice to produce a satisfactory result. If desired, an inert base such as barium sulfate may be added in quantities of about 5 to 20% or even higher if desired. This base however is not essential to the water soluble ink used in carrying on my process, but it is often found in inks of the class used.

The colors I prefer to use are brilliant green, orange Y, scarlet 2R methylene blue, etc.

After the paper has been printed with this Water soluble ink, I allow it to stand .for a sufiicient period to dry, the printed surface thereof. preferably applying heat thereto to cause the water soluble vehicle and the coloring matter carried thereby to penetrate the fibers of the paper and thus thoroughly impregnate the entire body of the paper with the ink and with the coloring matter forming a part thereof. The the application of heat is aging process in textile effect of softening the paper and loosening the fibers in a degree to facilitate the absorption f the water l ble ink.

slow drying of similar to the printing and has the The paper havin thus been thoroughly impregnated with t e water solubleink, the next. step is to render this ink insoluble throughthe precipitation of the coloring matter by means of a fixing medium which will convert the same into an insoluble lake. This step separates the coloring matter from the water soluble vehicle and causes it to enter the fibers of thepaper. At the same time the coloring matter is rendered extremely sensitive to chemical reagents, so

that the application of such reagents to the paper will aflect not only the surface but the entire body of the paper and thus make it practically impossible to restore the paper to. its former condition. The colorin matter, through this step becomes firm y at,-

" tached to or embedded in the fibers of the paper as distinguished from being merely a superficialcoating. The fixing medium is dependent upon the nature of the colors emplrgylgflfand may vary so long as it'has the characteristic of precipitating the col0r-- ing matter held by the water soluble vehicle inthe manner described. y

.In connection with brilliant green or methlyene blue, I use tannic acid as the medium, While with orange Y or scarlet 2R I use barium chlorid,

. It' will be apparent that simultaneously with the precipitating of the coloring matter, the water soluble vehicle will be carried away by the fixing medium, thus thoroughly separating the coloring matter and its vehicle on the finished product.

If desired, thepaper may be rendered still i more sensitive to the action of reagents by immersing after it has dried in a solution of recipitatlon thereof through the fixing ink.

his condition is not true where a water proof link having an oily vehicle is. employed, as while the oilyvehicle will render the surface of the paper water-proof or impervious to moisture, it does not make the coloring matter sensitive to chemical reagents which is an essentialcharacteristic of 'my'ginvention.

y the foregoing process, I secure a product consisting of the printed paper, the fibers of which have attached thereto or embedded therein water insoluble coloring matter sensitive to chemical reagent, which colpaper, said oring matter is-devoicl of the vehicle used to permit it to be applied to the paper.

Having descrlbed my inventlon, what I claim as new and desire to secure by Letters 1. The herein described process of printing negotiable instruments or other commercial paper embodying therein printing upon paper with a chemically sensitive ink, causing said ink to penetrate the fiber of the pa er and thereafter subjecting the paper to a xing medium whereby the coloring matter of the ink is attached to and embedded in the fiber of the paper and its sensitiveness to the action 0 chemicals retained.

2. The'herein described process of printing negotiable instruments or other commercial paper embodying therein printing upon paper with a chemically sensitive ink containing a soluble vehicle and color, causing said ink to enetrate the fibers of, or be absorbed by, t e paper and thereafter simultaneously precipitatingthe coloring matter and rendering it insoluble and removing the vehicle through the action of a fixing medium which will not affect the chemical sensitiveness of said coloring matter.

3. The herein described process of print I ing negotiable instruments or other commercial paper embodyingthereinprinting upon paper with a chemically sensitive ink con taining a soluble vehicle and color, causing said ink to penetrate the fibers of, or be absorbed by, the aper, thereafter simultaneously precipitating the coloring matter and rendering it insoluble, removing the vehicle through the action of a fixing medium which will not affect-the chemical sensitiveness of said coloring matter and thereafter subjecting'the paper to a chemical reagent for renderin said coloring matter-still more sensitive to c emicals. I

4. A safety paper for negotiable instruments or other'commercial paper having .chemically sensitive coloring matter embedded in the'fibers of the paper, said coloring'matter being devoid of a vehicle.

5. A safety paper for negotiable instruments or other commercial paper having chemically sensitive water insoluble coloring matter embedded in the fibers of the avehicle. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LLEWELLYN REE GE.

Witnesses:

F. D. AMMEN, 'JOHN P. DAVIS.

coloring matter being devoid of

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