US1972011A - Process for manufacturing carbon papers - Google Patents

Description

Aug. 28, 1934: A. DE PLANCHE 1,972,011

' rnocsss FOR MANUFACTURING CARBON urns Filed May 26, 1932 3 Sheets-Sheet l Pep Mme/7a Aug. 28, 1934. A. DEPLANCHE 1,972,011

PROCESS FOR muumcwum ue CARBON nuns Filed May 26, 1932 3 Sheets-Sheet 2 2 o I o O o o O H 'Dep/anch e.

gay 777W '5 f Aug. 28, 1934. A. DEPLANCHE 1,972,011

PROCESS FOR MANUFACTURING CARBON PAPERS Filed my 26, 1952 3 Sheets-Sheet a Patented Au 28, 1934 Armand Deplanche, Paris, France Application 1 Claim.

At the present time, the printed forms or carbon papers are obtained, either by printing with a typographic plate realized by means of a fatty ink keeping its copying power as long as it is not wholly dry, or by printing, at a hot state, of a wax ink solidifying by cooling and by passing the paper so' printed upon a plate or a hollow cylinder cooled with a flowing of cold water.

In all cases, the copying material laid upon the paper, gives asuperthickness which maculates the next sheets when these papers are stacked; it isnecessary therefore to realize a storage at the well known manner.

Further, by drying and after a relatively short time, the copying power decreases fastly. Besides, in all process the actual manufacturing of the multiple documents prevents to coat the entire faces of the sheets and peripherical margins 20 are always necessary. In fact, if these margins are dispensed with, when the sheets are cut off and under the action of the cutting blade, the copying material is reported upon the corresponding non printed sheets; a

This invention has for object to remedy to the aforesaid inconveniences and relates to a process for manufacturing carbon papers which consists to lay the copying material in'a thin layer, at a manner known per se, upon the paper,- but characterized in that this material is incorporated by a pressure, at a hot state, into the paper, the excess of materialbeing preferably removed so as to let substantially no superthickness on the paper.

The invention has also for its object to perfect the incorporation of the material by pressure into the paper, by a drying with heating of this material in order to obtain carbo'n sheets keeping indefinitely their copying power without maculating the adjacent sheets. I The invention has for further objectmeans to carrying out the process and particularly the combination, in a same unit, .with a container or inkstand for the copying material, of a delivering drum for lying this material upon the paper, of a scraper acting by pressure upon the paper passed between it and a support preferably constituted by a heating cylinder, so as this scraper acts both'as a scraper for removing the material in excess and as a pressing member for entering the material into the paper, and also as a hot drier for 'the copying material.

The invention has for further object printed forms with multiple carbon sheets the binding of which .is performed by May 26, 1932, Serial No. 613,786 In France May 28, 1931 means of a pressed The invention has for further object an automatic machine performing the lying of the copy ing material, the printing of the sheets, the binding and the cutting off of the latter. Such a machine is characterized by.the following features independently applied or applied in all combinations:

(a) Each spool of fresh paper passes through a printing device,.is applied upon a delivering drum dipping in an inkstand and thence passes between a drying pressing scraper and a. heating cylinder. Y

(b) The sheets provided with a carbon coating by the above means are then superimposed for passing under circular toothed knives which make perforations permitting to remove each sheet, thence pass between binding wheels and are finally cut off by circular knives, a suitable device separating, at a'known' manner, each multiple document. I

(c) Regulating means are provided, for modifying the position or the pressure of the heating delivering cylinders, as wellas the position and pressure of the scraper. f

(d) The drying pressing scraper is' constituted by ablade introduced in a slot provided in a corresponding support, setting screws-permitting of keeping a perfectly plane, the pressing scraping heating plate. Y The invention relates also toother features which will appear in'the following description in reference to the accompanying drawings given by way of example only.

Fig. '1 is a perspective view of a machine according to the invention.

Fig. 2 is a perspective view, at an enlarged scale, of a drying pressing inking device.

Fig. 3 is a perspective view,.at an enlarged scale, of a device for perforating, binding and cutting off the sheet coated-with carbon.

Fig. 4 is a lateral view, with sectional view showing with more details, the unit illustrated in Fig. 2;

Fig. 5 is afront view of the heating drying scraper.

Fig. 6 is a transverse sectional view of the heating drying scraper mounted in its support.

Fig. '7 is a front view of a blade limiting the thickness of the material on the delivering drum.

Fig. 8 is a front view of the delivering drum.

Fig. 9 is a partial perspective vew of a-flle of printed forms coated with carbon and manufactured with the automatic machine.

As previously stated, the process for manufacturing carbon papers consists chiefly in the incorporation of the copying material in the paper, by pressure in a hot state and realized by means of a drying pressing scraper which .removes at the same time the material in excess. The drying of this material simultaneously with its incorporation allows to obtain:

'(a) A paper coated with carbon which does not maculate and which does not necessitate an important pressure, such as that produced by a pencil-joint or by a character of typewriter when making a report.

(b) Successive impressions more numerous than these obtained with ordinary carbon papers.

(0) Not blurred printing as is ordinarily the case for the last typed sheets.

((1) Carbon papers which, from their nature, may be stacked without giving rise to the incon-, veniences of the ordinary carbon papers which must be stacked on edge or put into boxes.

The machine hereafter described by way of example only, allows the realization of files of printed forms coated with carbon from spool of fresh paper. These files of printed forms are wholly and automatically manufactured by the machine which delivers at its delivering end files of printed forms coated with carbon, put together and counted.

This machine comprises a main frame 1 upon which are mounted the different devices. In the example shown, the files of printed forms are constituted by three sheets printed on one of their faces, two of this sheets having on the other face a laying of copying material.

The three sheets superimposed and assembled 2, 3 and 4, are fed out automatically from spools 2a, 3a and4a mounted on corresponding supports. Any number of spools can be provided, this member is a function of the member of each document coated with carbom also, the colour of this paper can vary according to the spools and the destination of these documents.

The machine comprises for laying the copying material to units 5 one of which 'is more particularly shown in perspective view at Fig. 2 and in transverse sectional view at Fig. 4. The machine includes also several printing devices of printed forms printing characters and other. These devices which are shown at 6 in Fig. 1 do not necessitate a special descriptionas they are of a usual type which does not contemplate the invention.

It would thereafter be described a unit 5 for incorporating the copying material into a sheet 4 for instance which has been previously printed by a known device 6.

In Fig. 4, the printed strip 4 which is guided by a roller '1 passes upon the rollers 8 and 9'for applying itself on a drum 10.

-The copying material is laid upon the sheet 4 by a drum 11 which dips in a container or inkstand 12, a plate 13 limiting the amount of ink on the drum 11.

In the example shown, files of double printed forms are simultaneously realized which are subsequently separated. The inking drum 11 is shaped as shown in Fig.-& f or lying down two layers separated by a space 14. The plate 13 limiting the amount of ink is adjustable on its support 15 '(Fig. 7) and provided with tongues- 16 which pass between. the useful parts of drum 11 at the ends of the same. The spindle of the drum 11 is mounted on a rocking member 17 (Fig. 2) which allows, by the threaded rod 18 and the nuts 19 and 20, to adjust theposition of the inking drum 11 for lying more or less material upon the strip 4.

The copying material laid upon the strip 4 by the inking drum 11 is incorporated into the paper by means of a drying pressing scraper 21 which removes at the same time the excess of material which falls down into the inkstand 12.

This drying pressing scraper 21 is mounted in a slot 22 of a support 23 pivoted at its ends by the intermediary of eccentric weights 24. The drying pressing scraping blade is maintained in its support 23 by means of screws 25 which allow by adjusting them to maintain the blade 21 perfectly plane. This latter device constitutes one of the features of the invention.

the intermediary of Then the strip 4 treated as just stated passes on the roller 26 on which it is gripped by the roller 2'7 but only in the parts not coated with materials. It is to be noted, according to the invention,

that the drums or rollers 10-11 are heated as well as the inkstand from a suitable source and preferably by means of electrical resistances, the connection wires of which are indicated at 28.

The pressure of the drying pressing scraper is adjusted by means of the screw 29 which varies the stretching action of the spring 30 fixed to the support 23.

The inkstand 12 is fed from a tank 31 heated by means of a pipe 32 heated itself and-controlled by a valve.

The strips provided with the copying material and dried as previously stated are superimposed at 33 (Fig. 3) and pass simultaneously under toothed circular knifes 34 and-25 which realize perforations permittingtodetach any sheet without breaking the binding of the files of printed forms. The superimposed strips pass subsequently between wheels 36 provided with peripherical projections which perform a binding and finally pass under side circular knifes 3'7 and 38 and a central circular'knife 39. The strips so bound together are finally cut 011 by a blade 40 at a 'known manner.

-facturing of file of printed forms coated with carbon is a mere example able of numerous modifications which so long as they do not change the features previously stated nor the purpose aimed, are comprised in the scope of the invention.

What I claim as my invention and desire to secure by Letters Patent is:

The process of coating paper with copying material consisting in applying heated copying material in a liquid form. to one surface of a strip of paper, passing the paper so treated around a heated roller with the untreated surface of-the paper contacting with the roller to dry the paper,

and applying a scraper underpressure to the treated surface of the paper on the heated rollerto press the paper against the roller to force the liquid copying material into the body of the paper

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