US1595866A - Transfer sheet and method of making same - Google Patents

Description

Aug. '10 1926.

Filed Sept. 17, 1924 ENTOR A RNEY Patented Aug. 10, 1926.

UNITED sTA rEs PATENT OFFICE. I

'WIIl'THROP STANLEY LAWRENCE, OF BROOKLYN, NEW YOBE,

assrenon 'ro mum- GBAIPH COMPANY, OE NEW YORK, N. Y., .A CORPORATION OF NEW YORK.

TRANSFER SHEET AND METHOD OF MAKING My invention relates to a new and im--.

proved transfer sheet and a new and improved method of making the same.

One of the objects of my'invention is to provide a new and improved transfer sheet a minimum of expense and without the need in which the-transfer will be printed upon the paper forming the backing or base of the transfer, withthe use of the ordinary reversed type now' employed by printers, with of making any special type for this purpose. 1 Another object of my invention is to provide a new and improved method of making-a transfer sheet whereby the proper registration of the transfer'marking upon the article upon which the transfer is to be made can be facilitated. t

Another object of my invention is to pro- .vide a new "and improved transfer sheet which will securequick and accurate registration of the transfer markin upon the article upon which the transfer 1s to be made. Other objects of my invention will be set forth in the following description and drawings which illustrate the preferred'.embodiment thereof, it being understood that the above statement of the objects of m invention is intended as a general exp anation thereof, and not as a limitation thereof.

Fig. 1 diagrammatically shows the appar'atus used for carrying out my method.

I Fig. 2 shows the top of the transfer sheet formed by my new and improved method. Fig. 3 shows the reverse of the said transfer sheet.

My invention is particularly directed to that type of transfer in which themarking is made upon a paper base, and the transfer marking is adapted to be released from the base when heat and pressureare applied. Of course, any equivalent material could be used for said paper base. Such transfers are very useful for marking linens and other fabrics,

bottom of the transfer base in reverse, and

" after the transfer is completed is impressed directly on the article-to be marked,

I moist ink of the imprint 5, whilethe ex- For the purposes of this'specifica-- Application am September 17, 1924.v Serial m; 788,186.

The base of the transfer ink, which may be any suitable indelible printing ink containing fast colors and no substances soluble in water, is applied upon the type 3 in the ordinary manner. In the first movement of the type 3, which maybe of the ordinary and regular kind, the printing does not take place upon the paper base 2 of the transfer, but instead an. imprint is made upon the tympan 1 which may be made of any suitable material such as paper or the like, so that the impression or marking made by the type 3, which is coated with the ink in any suitable manner, remains upon the surface of the tympan 1. At the next movement of the type. 3, the paper 2 is inserted in the usual manner so that an imprint is simultaneously formed upon both sides of the paper, the said imprints being in exact registration with each other. The direct imprint 4 upon the top of the base can be. read in the ordinary manner and this serves asa guide for transferring the reverse printing 5 upon the bottom of the paper, to the article, fabric, leather and the like upon which the transfer is to be made. This method permits the use of ordinary reverse type. Otherwise, it would be necessary to make special type.

After the imprint 5 has been formed upon the rear of the paper 2, it is dusted with a finely powdered composition while the ink is Wet, so that this composition clings to the 'cessgcan 'be removed from, the paper2 by tapping the said papers By this method this composition clings only to the hues of the imprint 5, after it has been fused and allowed to set.

Various powdered compositions can be used dependent upon the size of the type employed, but for 12 to 36 point type a suitable powdered composition may include the following I Dyestuffs soluble in oil such as indulines including the nigrosines, Victoria blue B base, oil redpwhich is a red dyefbasic in nature and'soluble in mineral oil, can be in- -1oo corporated w in Y compositions containing 2. neutral resin such as paracoumarone resin with pigments which are resistant to alkaline washing fluids. -Substances which as alpha nitro-naphthalenecan be added to 1 5 give increased stability and resistance to as. I

the washing fluid wherebythe dye which has been used has an affinity for the fibre of. the fabric on which the impression is made When certain dyes are used, as Victoria blue B haw, the slow decomposition or removal of the carrying medium of the ink on washing causes the dye or pigment to become .fixed in the fibre so as to produce a. very permanent mark. I

As a practical working example of such a composition, the following may be used, the proportionsbeing by weight:

80 parts of paracoumarone resin such as Cumar, 20 parts of a fast lithographic ink having a blue color for example, 5 parts of a mineral oil having a specific gravity of 0.800, and 5 parts of Victoriablue B base.

I have found it highly desirable that the dusting composition should not consist of resin alone but should also include viscous and liquid substances. For example, the lithographic ink above mentioned consists substantially of dried or thickened linseed oil, which is a viscous substance, and the mineral'oil above mentioned is a liquid.

By mixing the relatively hard resin with a softer substance or substances, a fusible composition is formed which, when powdered to the proper degree of fineness, clings to the moist ink impression so as to form a sharply defined design. I have also found that theproper admixture of the dyestufi' or of the oil red before mentioned, and the five parts of mineral oil are replaced by five parts of a nitr c-naphthalene, preferably al pha nitr'o-naphthalene'.

Other pigments and dyestuffs could be used to give colors other than red or blue. @f course, if pigments and dyestufi's are omitted from the dusting composition, a clear and colorless fused layer is formed upon the printing ink, which as before mentioned may be any suitable indelible printing ink containing fast colors and no substances soluble in water.

A large number of different formulae can' lee-employed for the ink and for the dusting composition em loy'ed in this method to meet various atmosp erlc and weather conditions.

and for the kind of work for which the transfer is intended. For example, the meltingpoint can be adjusted by varymg thequantities of the softer elements of the before mentioned compositions such as the nitro-naphthalene, the mineral oil, the lithogra hic ink, etc.

en the reverse imprint on the paper 2 has been allowed to set after fusing, a raised and fusible reverse imprint is formed, and the transfer can then be made in' the ordinary manner by allowiii the reverse imprint to come in contact with the article and then applying heat and pressure upon the top of the transfer by a suitable heated iron or the like.

The transfer is formed upon the article to be marked in exact registration with the direct'imprint upon the top of the paper.

It is desirable to gently heat the reverse imprint after the dusting composition has been applied thereto, and the excess has been removed, so as to fuse thepowder thus retaining it in position upon the imprint or im ression on the paper.

11 making transfers, it has been heretofore customary to print the paper with a tusible ink. It has also been suggested to print a sheet of paper provided with a fusible wax coating with an ordinary non-fusible ink, and to then add a resinous ingredient to the saidink, so that the said ink would absorb this ingredient and become fusible. According to this invention, ordinary unwaxed paper is printed with ordinary type and ink in the well known manner, and a raised fused surface layer of a fusible transfer ink composition is then formed on the marking formed with the ordinary ink. This surface layer is so brittle that it could not be used" by directly applying it to the paper by the ordinary intaglio printing process used in connection with ordinary.-fusible; transfer inks; A transfer made as before specified can therefore be manufactured very quickly and cheaply and without the use of intaglio printing cylinders. Experience has shown that the fusing of the powder causes it to intermix with the ink to a certain extent, which is an additional advantage. When the transfer is dusted with the powder, and the surplus powder is removed, the

impression is somewhat ragged at the edges due to adhering loose particles of the owder at the edges of the ink.impress ons. However, after the transfer has been heated, the lines of the impression become smooth I showing that the powder has been fused an has become intermixed with the ink so that 'the outlineof the transfer has thenecessary smoothness. It is only necessary to heat a complish the fusin of the powder. The transfer can then e though it maybe allowed to standhours before shipment.

I have described a" referred embodiment of my invention but it s clear that numerous orafew.

changes and omissions could be made w th;

directly shipped, '91- l till) transfer for a few seconds in order to acout departing from. the spirit thereof and I ing a marking formed thereon with ink, the do not 'wish to be limited to the details be- 831d. marking having a fused surface coating fore specified. a Y comprising a resin and linseed oil. I I c1aim:- 3. Atransfercomprising-a paper base hav- 15 5 1. Atransfer comprising a paper base haviiiw a'm'arking' formed thereon with ink, the ing a marking formed thereon with ink, the 'sald markin having a fused surface coating, said marking having a fused non-tacky surthe said sur ace coating including a resin, a face coating comprising a resin and .a visviscous substance anda liquid. v cous substance, the said surface coating be- In testimony whereof I hereunto aflix my 20 10 ing substantially colorless and transparent. signatiire.

2. A transfer comprising a paper base hav- .WINTHROP STANLEY LAWRENCE.

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