JP2560009B2 - Ink ribbon for printer - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an ink ribbon for a printer.
The present invention relates to an ink ribbon for a printer, which is capable of significantly reducing the wear of a type member used in computer terminal devices such as a dot impact printer, a belt printer, and a digi printer which are most commonly used.

(Background of the Invention) In recent years, the peripheral equipment of computers has been growing significantly. Among them, impact printers such as wire dot printers, belt printers, and digi printers occupy the mainstream because of their advantages of being able to perform simultaneous copying with high printing speed despite the fact that they are noisy during use.

As the type members of these printers, iron, stainless steel, tungsten, high speed steel and special alloys whose surfaces are plated with chromium or nickel, glass fiber reinforced plastic, etc. are used. However, since these type members are used for high-speed and simultaneous copying, they are used continuously for a long time under high printing pressure, and in order to print high-quality Kanji characters, dot impact printers (characters etc. are represented by a dot matrix). Impact dot matrix printer that prints by printing fine metal wire rod pins on the printing paper with pressure from the ink ribbon impregnated with ink on nylon, etc. base cloth. Impact dot matrix method, wire dot impact printing method The printer, which is specified by the method, dot matrix impact method, etc.) has a thin wire dot pin diameter. As a result, the printed surface is considerably worn, leading to uneven printing, blurred printing, and missing printed characters. Therefore, it is necessary to replace the type member frequently,
The cost is enormous and the loss is large. For this reason, there is a strong demand for an ink ribbon for a printer that can minimize the wear of the printing member. The cause of wear of the printing member is the colorant contained in the printer ink ribbon,
Carbon black is particularly conceivable.

In order to solve the above-mentioned problems, the printer side has been devised such as attaching a wear resistant alloy to the dot pins, which is effective in reducing the wear of the printing member, but has the drawback of increasing the cost.

(Object of the Invention) The present invention provides an ink ribbon for a printer, which can reduce wear of a printing member in an impact printer and can provide high-quality printing by using a black colorant instead of carbon black in the colorant. The purpose is to do.

(Summary of the Invention) As a result of intensive studies for the above purpose, the present invention shows that carbon black is used as a coloring agent instead of carbon black
It was found that it is extremely effective to combine the above with other black dyes in order to achieve the above-mentioned object.

In the printer ink ribbon of the present invention, by using carbon fluoride in combination with a black dye as a colorant, carbon fluoride is dyed to give a clear real black color,
In addition, due to the characteristics of the carbon fluoride of the fluorocarbon and the low surface energy of fluorine, the wear of the printing member is reduced, the life of the printing member can be extended, and the printed image to be printed. Can maintain its sharpness for a long time.

(Specific Description of the Invention) The present invention will be described in more detail below. In the following description, “%” and “part” representing the quantitative ratio are based on weight unless otherwise specified.

The vehicle used in the printer ink ribbon of the present invention may be any oil used in ordinary printer ribbon inks, such as animal and vegetable oils, mineral oils, ester oils and the like, and other coloring agents such as dyes and organics. A pigment and other additives such as a dispersant and a resin are added as necessary, and the use thereof is not particularly limited.

In the present invention, carbon fluoride is added. It is preferable that the average particle diameter of carbon fluoride is 0.1 to 20 μm. Further, the amount of addition is preferably 0.1 to 20% of the total ink. If the amount of carbon fluoride added exceeds the above range, the ink fluidity becomes poor and dyeing with a dye becomes poor. Further, when it becomes smaller, the lubricity is lowered, which is not preferable in any case. The addition amount of the dye used together with the fluorocarbon is most preferably equal to or double the amount of the fluorocarbon.

Also, in addition to fluorinated carbon, carbon black 4
It may be used in the range of% or less. Within this range, the wear of the printing member is not significantly affected.

The ink ribbon for a printer of the present invention is prepared by mixing the above-mentioned colorant vehicle with a kneader and kneading with a three-roll to obtain a ribbon ink, which is then used in a printer base cloth such as nylon. It is obtained by applying it to the ribbon base fabric. Next, the ink ribbon for printers of the present invention will be described with reference to Examples and Comparative Examples.

(Example) 20 parts of oil-soluble dye, 10 parts of fluorocarbon, 25 parts of mineral oil,
20 parts of oleic acid and 25 parts of sorbitan fatty acid ester were mixed with a kneader and uniformly kneaded with a three-roll mill to prepare a ribbon ink for a printer. This ink was applied to a nylon base fabric for a printer ribbon using a roll coater to obtain a printer ink ribbon. This ink ribbon was applied to a dot impact printer using a printing member made of tungsten to print 1 billion dots, and the abrasion state was measured in comparison with the initial printing. When compared with the initial printing, the printed state was almost the same as clear printing.

Comparative Example 1 An ink ribbon for a printer was obtained in the same manner except that an oil-soluble dye was used instead of carbon fluoride. This ink ribbon was tested as in the example.

(Comparative Example 2) An ink ribbon for a printer was obtained in the same manner except that carbon black was used instead of carbon fluoride. This ink ribbon was tested as in the example.

After the test, Comparative Example 1 had a large print blur and was unclear, and Example 2 had a large print unevenness and was unclear.
The wear state of the dot pin, which is the printing member of the dot impact printer (after 1 billion tot printing), was as follows.

Worn Length of Dot Pins Example 50μ Comparative Example 1 130μ Comparative Example 2 1200μ In Comparative Example 1 and Comparative Example 2, the dot pin wear was about 3 to 24 times that of the Examples, and the excellence of the Examples was excellent. it is obvious.

Claims (2)

(57) [Claims] 1. An ink ribbon for a printer, wherein the ink ribbon for a printer contains carbon fluoride (CF) n. 2. The ink ribbon for printer according to claim 1, wherein the ink ribbon for printer contains 0.1 to 20% by weight of carbon fluoride.