DE1210440B - Carbon and carbonless paper in sheet and tape form on a plastic basis - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Ο .:

B41n

German KL: 151-7 / 02

Number:
File number:
Registration date:
Display day:

1210440
W29363VIb / 151
January 26, 1961
February 10, 1966

The invention relates to a carbon and copy paper in sheet or tape form with a Plastic film as a color carrier and a color layer, which plastic as a binder and plasticizer and contains pigments.

Carbon and carbonless papers with colors bound by plastics are known. she Thanks to the firmly attached plastic film, they are characterized by the fact that the color mass is predominantly in liquid form is pressed out of the Kunststoffihn ίο, so that such carbon and copy papers are extremely productive, d. H. that very often they can be overwritten before they are exhausted are. In carbon papers of this type, the actual color mass is an inner phase in one Contain plastic as the outer phase, the plastic itself being a sponge-like, porous mass forms.

One already has carbon and copy paper with a layer of paint built up on plastic suggested for single use and thereby the plasticizer content of the writing-forming layer kept extremely low. The writing was then done by tearing the writing out of the color-releasing layer and its transfer to a prepared sheet. The preparation had that Purpose to assist in tearing out the writing and the writing on the sheet to be written on to stick, as it were.

In all of these proposals, however, so far paper, i.e. a fiber fleece, has been used as the carrier material for the writing Color mass has been used.

As far as it has already been proposed, plastic-bonded layers of paint on a plastic film to attach, one has expressly searched for means and found ones that have a unique Detachment of the color layer from the carrier material do not allow repeated use to enable.

For the sake of completeness, it should be mentioned that there are also layers of paint already applied to plastic film but which do not form a uniform layer, but rather represent a multi-layer system, so the pigment is enclosed between two binding layers without a homogeneous one Mixing of these layers takes place.

There are also carbon papers with a layer of color applied to plastic film and their binding agent Is ethyl cellulose.

To the extent that, in the present state of the art, papers are known for single use, that is to say, to the extent that the carbon and copy paper in the writing-forming layer is in
Sheet and tape form based on plastic

Applicant:

Günther Wagner,
Hanover, Podbielskistr. 141

Named as inventor:

Dr. Otto Rex, Altwarmbüchen near Hanover;

Günter Kaase, Hanover

There are essential passages made by the types when the overwriting forms a font void Disadvantages, insofar as the font is not sufficiently sharp. One of the most important The result of the products according to the invention is the formation of an exceptionally sharp edge Font. Such unusually sharp-edged records are z. B. in registration devices for magnetic records needed.

It is known that with increasing amount of plasticizer the abrasion resistance of carbon and carbonless papers subsides, so that contamination caused by involuntary ink transfer not _t are rare. In addition, the smear resistance of the writing produced with such papers is insufficient.

The present invention overcomes all of these disadvantages. It consists in that on a carrier material A layer of color is applied from plastic film, which is a mixture of binders a cellulose derivative and one that is miscible and compatible with it, has good plasticizer and pigment binding properties Synthetic resin and, as a coloring agent, magnetic pigments, optionally in combination with Contains non-magnetizable pigments, in the color layer on one part by weight of the binder mixture 4 to 6 parts by weight of the pigment and 2.5 to 3.5 parts by weight of a plasticizer are present, which is according to the binder mixture used.

According to a preferred embodiment of the invention, the binder mixture should consist of one Cellulose ether (e.g. ethyl cellulose) and a ketone resin. It has been found to be particularly inexpensive when these two components are used in a 1: 1 ratio. It has also shown to be preferred as a plasticizer

609 507/239

Claims (1)

3 4 - ■ Polyvinyl ether in a mixture with polyglycols indicates that a compound is used as a binder ratio 1: 1 can be used. - · - a mixture of a cellulose derivative and a Another particularly advantageous embodiment with a mixable and compatible, well-soft shape the invention consists in the fact that the use maker and pigment-binding synthetic resin and ten polyglycols in turn from a mixture 5, a pigment is used as a coloring agent, of liquid and solid polyglycols roughly in proportion, with the pigment content and the binder content ratio 1: 2 exist. . -. is at least in the ratio 2: 1 and the color According to the invention, magnetic mass, the binder pigments used, are also used as pigments Alone or in mixtures with others for mixed plasticizers added the carbon and carbonless papers are the usual io. Pigments such as carbon black or milori blue are used. 2. Carbon and carbonless paper based on magnetic pigments with particularly high saturation language 1, characterized in that in the remanence is preferred. Color layer on 1 part by weight of the binder ■ As an example of the composition of a mixture of 4 to 6 parts by weight of a pigment coating compositions according to the invention are presented with 15 and 2.5 to 3.5 parts by weight of plasticizers, are in hand. 1. Non-magnetizable ink layer 3. Carbon and copy paper according to An Claim 1 and 2, characterized in that the Ethyl cellulose 4 parts. used binder mixture a cellulose Ketone resin 5 parts. 20 ether, especially ethyl cellulose, contains. Polyvinyl ether 15 parts 4. carbon and carbonless paper as requested Poly lvkol 24 parts claim 1 and 2, characterized in that the ^ "" Binder mixture contains a ketone resin. ^{& uü} 36 leüe _{5 coals} _ _{xmä carbonless paper} after arrival As a solvent for this mass, ethanol 25 can claim 1 to 4, characterized in that the may be used, the solvent used for the paint layer is preferably used used in the same parts by weight as the mixture of a cellulose derivative and a dry substance. Ketone resin in a weight ratio of 1: 1. 6. Carbon and carbonless paper after arrival 2. Magnetizable paint ₃₀ claim 1 to 5, characterized in that as Ethyl cellulose 5 parts plasticizer a mixture of a polyvinyl ether and polyglycols is used. Ketone resin 5 parts _{? Coals} . _and carbonless paper after arrival Polyvinyl ethyl ether 15 parts claim 6, characterized in that the Liquid polyglycol 5 parts 35 plasticizer mixture of approximately equal parts Solid polyglycol consists of 10 parts of polyvinyl ether and polyglycols. Magnetic pigment 45 Teüe ⁸ · £ ^ f " ¹ ^ carbonless paper after arrival ^brb spoke 1, 6 and 7, characterized in that In this case ethyl polyglycols used as plasticizers can be used as solvents Alcohol is made from a mixture of liquid and solid in the same way as in Example 1 be turned. Polyglycols exist. The application of the writing 9, carbon and copy paper according to the invention after Anbildenden Color layers on the carrier material mentioned 8, characterized in that the poly follows in a manner known per se. glycol mixture of one part of a liquid and . 45 consists of two parts of a solid polyglycol. Claims: _{10 coals} . _and carbonless paper after arrival 1. Carbon and copy paper in leaf language. 1, characterized in that as or tape form with a plastic film as the coloring pigment, a magnetic pigment is used. carrier and a layer of paint, which is plastic or ethyl cellulose as a binder as well as soft 50 "Ifif pamphlets considered: Makers and pigments, thereby becoming US Pat. No. 2,872,340. 609 507/239 2.66 © Bundesdruckerei Berlin