SU825353A1 - Ink ribbon for computers - Google Patents

Description

The invention relates to dye ribbons, in particular dye ribbons for electronic computers based on synthetic fibers, used for printing information on alphanumeric computer printing devices on data carrier — paper-perforated tape for infinite formulas. . The famous ribbon is made of fabric impregnated with printing ink containing carbon black, black powder, aluminum powder, black oil, red-cherry oil, purple oil, spindle oil f. However, such a composition does not provide an impression of an intensely black color. Closest to the proposed dye tape is made of textile fabric impregnated with printing inks containing, in wt.%: Pigment (soot, purple toner) 10, toning dye (nigrosin, rhodamine) 10, oleic acid 2-0-30 and mineral oil (castor oil) 50-60 t2l. However, such a tape does not provide sufficient blackening of the impression, which makes the text more difficult to read. Another disadvantage of the tape is the weak retention of ink by synthetic fibers. The purpose of the invention is to increase the density of the print impression. This goal is achieved by the fact that a dye tape for a computer made of synthetic fabric impregnated with printing ink containing carbon black, a tinting dye, mineral oil and oleic acid, additionally contains a salt of high molecular weight fatty acid, and as a tinting dye contains a mixture of indulin and the base of the main purple K at the following ratio of components, wt.%: 15-20 10-15 Toniru1Sh1 dye 36.5-42 Oleic acid 27.5-33 Minerng oil 0.1-0.5 Salt of fatty acid The ratio of Indulin and o The base of the main purple K in the mixture is between 1.2 and 1: 1: 1.2. . As the fatty acid salt, sodium palmitate, ammonium oleate, zinc staarate can be preferably used. As mineral oil, castor oil, industrial oil and other known mineral oils or mixtures thereof can be used. Indulin is a mixture of the hydrochloric salts of the amino and phenylamino derivatives of phenosafranin. The base of the base purple K is, {4-M-methylamino-phenyl) -di {4-N, N-dimethylaminophenyl) -carbinol. Example 1. Paint compositions for dye ribbons are shown in Table. prepared in the following manner. A mixture of tinting dyes of zinc stearate and oleic acid is heated on a glycerin bath at 70-90 with stirring until complete dissolution. The solution is cooled, displaced with soot and mineral oil, and the suspension is ground 8-10 times on the spray paint to form a uniform viscous paint. The resulting paint is applied by hand to a synthetic fabric, Des Throye Star. Excess ink is removed with filter paper. Determine the degree of impregnation, as the ratio of the absorbed dye and fabric, and the density of the imprint of the letter H, obtained by printing on the Amber electromechanical typewriter, measured on a reflective densitometer. Macbet. The results of the determination are given in tab. 1, which shows that by applying formulations A, B and-B according to the proposed method, -Ragging ribbons with a higher degree of impregnation are obtained, providing the first impression, with a blackening density 40% higher than the known. Example 2. In a manner similar to Example 1, paints were prepared for coloring flax containing 17.0 g of exhaust gas 100 7.0 g of indulin; 7.0 g of the base of the main violet; 3-8.5-38.9 industrial oil, 30.0 g of oleic acid and 0.1} 0.25, 0.5 zinc stearate. The obtained dyes are applied to the synthetic fabric of the Deschuchiu Star as in Example 1, and the degree of impregnation and the density of the blackening of the 60th impression are determined upon impact of the letter H from the Amber typewriter in one place. The degree of impregnation is 30–31%. The effect of the surfactant on the optical density due to blackening of the print is given in Table. The optical density of the 60th imprint of the letter H, obtained by printing according to the known content, is 0.0 Similar results were obtained when using sodium zinc palmitate and ammonium oleate instead of zinc stearate. As can be seen from the table. 2, the introduction of a high molecular weight fatty acid soybean surfactant, the composition of the printing ink of the ink contributes to the retention of the ink of the synthetic ink tape, which is reflected in an increase in the density of the search in the case of repeated use of the tape (50-60 impressions). Example 3. In an industrial paint-making compartment, paint is prepared for painting tapes of composition, wt.%: Soot EG - 100 .16.9 Indulin 7.0 Base of basic violet K 6.8 Oleic acid 41.0 Industrial oil No. 2023 , 5 Castor oil 4.8 Zinc stearate 0.1 In the reactor, equipped with a jacket and an agitator, load oleic acid and toning dyes. The stirrer is turned on and the mixture is stirred 1 hour at 100 ° C until the dyes are completely dissolved. Soot, zinc stearate, castor oil and 50% of the calculated amount of industrial oil No. 20 are loaded into the paint preparation tank. Then the dye solution is poured. The mixture is first manually stirred, ground on a 3-roll industrial paint mill 7 times. The remainder of the industrial oil is added and the mass is ground another 2 times to a pigment milling degree of 10 µm (wedge). An intense black paint is obtained with a viscosity of 25 s (ball method). The 375 mm wide Shellon synthetic fabric is impregnated with the obtained Paint on industrial impregnating equipment. The degree of impregnation is 29%. The resulting tape is packed into cassettes and tested on a Yantar typewriter with impact force 2 and on an alphanumeric printing device of an AP 7102 electronic computer (ATsPU computer AI 7102). “The tests show that the resulting tape provides 60 prints from a single sheet on a typewriter and maintains 30 rewinds to an ADC computer, giving clear and distinct prints. The proposed tape for durability surpasses anasogic cotton ribbons 5 times without degrading the print quality. As can be seen from the above examples and tables, the proposed ink ribbon provides a higher print quality than is known. . The necessary chemicals and materials for the production of dye ribbons are produced by the domestic industry.

Table 1

Yidulin:

The base of the main purple K

Oleic acid

Industrial oil number 20

Zinc stearate Impregnation degree,%

Optical density of blackening of the first

Optical density of blackening of the 60th print

Claims (2)

1. Dye tape for electronic computers made of synthetic fabric impregnated with printing ink containing carbon black, tinting dye, oleic acid, and mineral oil, which is so that, in order to increase the density of blackening, the print, printing ink additionally contains a salt of high molecular weight fatty acid, and as a tinting dye - a mixture of Indulin and the base of Basic Violet K in the following ratio of components,% 5 8.18 4.58 7.00 6.82 5.42 7.00 42.00 36.50 41.00 27.50 33.00 27.70 0.50 0.50 0.50 30.20 30.20 31.60 0.25 0.26 0.25 table 2 0.10 0.13 0.14 0.14 Soot15-20 Toning dye 10-15 Oleic acid 36.5-42 Mineral oil 27.5-33 Salt of fatty acid 0.1-0.5 2. The tape according to claim 1, characterized in that the tinting dye contains Indulin and the base of the main purple K at a ratio from 1.2: 1 to 1: 1.2, Sources of information taken into account in the examination 1. The UK patent 1dio.731, cl. Kommersant 2 V, published, 1968. 2. US Patent No. 2.759.586, cl. 197-172, published. 1953 (prototype).