JPH0717868B2 - Red meat liquid and method of manufacturing red meat liquid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a red ink liquid for imprinting such as a seal stamp. By improving the absorbency and the drying property, not only plain paper (easy-absorbent paper) but also high-quality paper (hard-absorbent Paper) and a Japanese paper, the present invention relates to a cinnabar syrup that enables efficient clear marking and a method for producing the same.

[0002]

2. Description of the Related Art There are two types of vermilion meat for imprinting such as stamps: vermilion meat for sponge (commercial office work) containing padded vermilion liquid and kneaded vermilion meat (special purpose) prepared by kneading vermilion liquid and contained material. However, regarding imprintability, transferability, chromaticity, light resistance, water resistance, chemical resistance, impact resistance, etc., which should be provided as red ink, JI
Regulations are provided in S.S6020-1992, respectively. As the red flesh liquid (red oil), a mixture containing a coloring pigment, a color-developing agent and a viscous agent as main components is often used. Table 1 shows the composition (weight ratio) of the conventional representative red meat juice, and the viscosity of the red meat juice is about 2
The temperature is adjusted to about 10,000 CP (25 ° C).

[0003]

[Table 1]

By the way, in order to carry out the stamping work of the stamp efficiently, in the case of easy-absorbent high-quality paper, which is often used for receipts and checks, at least absorption and drying of the vermillion liquid on the surface of the paper are required. It must be completed within 3-10 seconds (and within 3-5 seconds if possible). This is because, if a large amount of paper is to be imprinted, the imprinted papers can be stacked and the papers will not be contaminated due to contact or friction between the papers.

However, when using the cinnabar flesh using the conventional cinnabar liquor, even if the paper is a high-quality paper, at least about 180 seconds or more is required for its drying and absorption because of its high viscosity. To do. As a result, it is not possible to stack the sheets after printing, and stains frequently occur due to contact and friction between the sheets, making efficient stamping work impossible. In addition, in the conventional stamping with red meat, since absorption and drying of red meat liquid is slow,
There is a possibility that a so-called imprint can be transferred, causing a transfer problem. Further, the conventional cinnabar liquor has a considerably high viscosity of about 20,000 CP (25 ° C.) as described above, which makes it extremely difficult to fill the porcelain liquor pad with the cinnabar liquor. As a result, it is difficult to assemble the vermillion pad and it is difficult to reduce the manufacturing cost.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a large number of markings cannot be performed with high efficiency because of the problems described above in the conventional marking of red meat using the red meat liquid, that is, the absorption and drying of the red meat liquid are slow. It is intended to solve problems such as the transfer of imprints, the difficulty of filling the vermilion pad with vermilion liquid, and the relatively quick absorption and drying on the paper surface. It is intended to provide a vermillion liquid that does not cause bleeding even in the case of thin paper or the like and is capable of highly efficient and clear stamp imprinting.

[0007]

Means for Solving the Problems Based on the results of a seal imprinting test using a large number of vermillion liquids, the present inventor has improved the absorption and drying properties of vermillion liquids to prevent stacking of papers after printing and stains due to friction. In order to measure the above, it is necessary to make the pigment particles in the red flesh liquid finer and to stabilize the dispersion in the vehicle, and to increase the viscosity of the red liquor liquid to at least 10,000.
Adjust the viscosity to 0 CP (25 ° C) or less (preferably 7,500 CP or less), and in order to prevent "bleeding" when stamping on washi paper or thin paper, make the viscosity of the red meat liquid at least 5,000 CP (25 ° C). ) I learned that the above adjustments are necessary. The present invention has been developed on the basis of the above-mentioned knowledge, and the invention according to claim 1 is the processed pigment 12 to 15 wt% in which a fine particle pigment is dispersed in a resin carrier; and diethylene glycol monobutyl ether 15 to 20 wt. %; Oleic acid 30 to 4
The basic composition of the present invention is that it comprises 0 wt% and the balance of refined castor oil and has a viscosity at room temperature of 5000 to 7500 CP.

Further, in the method of the present invention, 12 to 15 wt% of the processed pigment in which the fine particle pigment is dispersed in the resin carrier is added to diethylene glycol monobutyl ether 15 to 20 w.
Dispersion and dissolution in t%, then the dispersion and dispersion mixture is dispersed and dissolved in 30 to 40 wt% of oleic acid, and further, the dispersion and dispersion mixture is dispersed and dissolved in 15 to 40 wt% of refined castor oil. It is to be configured.

[0009]

The processed pigment in which the fine particle pigment is dispersed in a predetermined amount of resin carrier is first dissolved and dispersed in a predetermined amount of diethylene glycol monobutyl ether at room temperature. Next, by adding a predetermined amount of oleic acid, it is redissolved and dispersed therein, and finally by adding a predetermined amount of refined castor oil and stirring and mixing, the pigment fine particles are made into a color developing agent and a viscous material (resin carrier). Stable dispersion in a mixture with The resin carrier in the processed pigment is dissolved in diethylene glycol monobutyl ether or oleic acid to maintain the viscosity of the red flesh liquid and enhance the dispersibility of the pigment particles. Further, the above-mentioned diethylene glycol monobutyl ether and oleic acid dissolve the carrier resin in the processed pigment and disperse the pigment particles to adjust the absorption degree of the red flesh liquid. Further, the refined castor oil serves as a main component of the color-developing agent to stably disperse the fine pigment particles, and at the same time, it is compatible with diethylene glycol monobutyl ether and oleic acid to prevent evaporation of these.

[0010]

EXAMPLES Examples of the present invention will be described below. FIG. 1 shows a process for producing the red meat liquor according to the present invention. First, in the first dissolution step A, a predetermined amount of the processed pigment 1 is mixed with a predetermined amount of the first solvent (diethylene glycol monobutyl ether) 2. Then, by stirring and mixing at room temperature, the carrier resin 1a of the processed pigment is dissolved and the pigment fine particles 1
Disperse b. Next, in the second dissolution step B, a predetermined amount of the second solvent (oleic acid) 3 is added to the mixture A ′ that has undergone the first dissolution treatment, and the carrier resin 1a and the like in the mixture A ′ are added to olein. The pigment particles 1b are dispersed while being dissolved in the acid 3. Then, in the third dissolution step C, a predetermined amount of the refined castor oil 4 as a color-developing agent is added into the mixture B ′ subjected to the second dissolution treatment, and the pigment fine particles 1b are mixed by stirring at room temperature. Re-disperse,
In castor oil 4, oleic acid 3 and diethylene glycol monobutyl ether 2 which are compatible with this are dissolved.

The processed pigment 1 is a well-known substance in which a fine particle pigment 1a is dispersed in a carrier resin 1b. Further, in this example, a processed pigment using ethyl cellulose as a carrier resin (trade name: Microlith Scarlet RA and Mycleris Yellow 2R-A) was used.
And Micrlis Magenta 2B-A manufactured by Swiss Ciba Geigy) and a processed pigment using polyvinyl butyral as a carrier resin (PAVC 1216 RED, PA
VC 1217 RED and PAVC 1104 YE
LLOW, made by Dainichiseika Co., Ltd., respectively.

The solvents 2 and 3 used in the first dissolving step A and the second dissolving step B should (i) dissolve the carrier resin 1a of the processed pigment 1 well (for example, alcohols, esters and ethers). , (B) Non-drying or almost non-drying (vapor pressure 0.1 mmHg or less · 28 ° C) (when evaporated, the viscosity of the red flesh liquid increases), (c) Compatibility with castor oil And (d) characteristics such as not altering materials such as seals (ivory, black buffalo, tussah, ebony, synthetic resin such as acetyloid and ABS) are required, and in the present embodiment, as the first solvent 2, diethylene glycol monobutyl ether ( The trade name is n-butyl carbitol Daicel Chemical Industries, Ltd., and oleic acid is used as the second solvent 3. The n-butyl carbitol is a very good solubilizer for the carrier resin (polyvinyl butyral or ethyl cellulose) of the processed pigment used in the present invention, and oleic acid is dissolved and dispersed in the vehicle after the processed pigment is dissolved and dispersed. It is extremely effective in maintaining the dispersion stability of the pigment for a long period of time.

The above-mentioned refined castor oil 4 has no drying property and does not affect various printing materials (ivory, black buffalo, poultry, acetyloid, ABS resin, ebony, etc.), so that it has been generally used as an excellent vehicle for vermillion liquor. Has been. In the present example, as the refined castor oil 4, a deodorized refined castor oil DR (produced by Toyokuni Oil Co., Ltd.) is used. Further, in the present invention, as the surfactant 5, Florade FC-17
6 (manufactured by Sumitomo 3M Co., Ltd.) is mixed in a slight amount in any of the melting steps. The surfactant 5 has the functions of promoting the dispersion of the pigment particles 1b and enhancing the absorbency of the red flesh liquid, but it goes without saying that the present invention can be achieved without mixing this.

Incidentally, in the embodiment shown in FIG.
Although the dissolution process is divided into three processes, a certain amount of processed pigment 1
The first solvent 2 and the third solvent 3 may be mixed and stirred at the same time. Further, in this embodiment, the respective components are mixed with stirring at room temperature, but they may be mixed with stirring at a high temperature.

Tables 2 and 3 show an example of the composition of the vermillion liquor (% by weight) and the product viscosity CP in each example of the present invention.
(25 ° C.) and the results of a seal stamp imprinting test, Sample Nos. No1 to No7 are obtained by using the carrier resin 1a of the processed pigment 1 as ethyl cellulose, and Sample Nos. No8 to No10 are the carrier resins 1a. It is a polyvinyl bratil.

[0016]

[Table 2]

[0017]

[Table 3]

Further, in Tables 2 and 3, the mark ○ in the test result column is completely dried within 3 to 5 seconds after imprinting, is not soiled by rubbing, and has a clear imprinting surface with no bleeding. If there is no stain, x mark shows that both stain and bleeding occur within 3 to 5 seconds after imprinting, (bleeding) x mark indicates that stain does not occur within 3 to 5 seconds after imprinting Each shows the occurrence of bleeding.

Further, receipt paper (Uke-35N, etc.) from KOKUYO CORPORATION is used as the high-quality paper in the test result column, and high-quality thin paper for Japanese-type paper from KOKUYO CORPORATION (Thailand-19) is used as the thin paper.
No.), but each of the Japanese papers uses calligraphy practice paper.

As is clear from the test results shown in Tables 2 and 3, the composition ratio of the vermillion syrup is such that the processed pigment is 12 to 15w.
t%, diethylene glycol monobutyl ether 15 to
20wt%, oleic acid 30-40wt%, the balance is refined castor oil and viscosity (25 ° C) is 5000-75
It can be seen that 00CP has excellent absorbency and dryness. That is, in the case of the above-mentioned red flesh liquid, stains due to friction and the like do not occur within 3 to 5 seconds after printing, and a clear printing surface without bleeding can be obtained.

[0021]

EFFECTS OF THE INVENTION In the present invention, since the composition ratio and viscosity of the vermillion liquor are regulated as described above, it has excellent absorbency and dryness, and is applicable not only to high-quality paper but also to thin paper and Japanese paper. It is possible to obtain a clear marking surface free from bleeding and free from stains due to friction or the like within 3 to 5 seconds after marking. As a result, the stamping work such as the seal stamp can be continuously performed with high efficiency, and the office work efficiency can be significantly improved. In addition, the vermilion liquid according to the present invention has properties equivalent to or better than those of the conventional vermilion liquid in terms of light resistance, water resistance, chemical resistance, etc., and corrosion, swelling, deformation, etc. of any seal material. It has no effect. Further, the vermilion liquid of the present invention requires almost no heating operation in the manufacturing process, and since the viscosity is not extremely high, it can be easily filled even in vermilion pads and the like, resulting in a large manufacturing cost. In addition to being able to be lowered, it is possible to prevent the abuse due to the transfer such as the conventional vermillion syrup liquid, and to exert an excellent practical utility.

[Brief description of drawings]

FIG. 1 is a manufacturing process drawing of vermilion liquid according to the present invention.

[Explanation of symbols]

A is the first dissolution step, B is the second dissolution step, C is the third dissolution step, 1 is the processed pigment, 2 is the first solvent (diethylene glycol monobutyl ether), 3 is the second solvent (oleic acid), 4 is the second 3 solvent (refined castor oil).

Claims (4)

[Claims] 1. Processed pigments 12 to 15 (wt%) in which fine particle pigments are dispersed in a resin carrier; diethylene glycol monobutyl ether 15 to 20 (wt%); oleic acid 30 to 40 (wt%); Made of castor oil and has a viscosity at room temperature of 5000-7500 CP
Zhu flesh liquid characterized by being. 2. The vermilion liquid according to claim 1, wherein the resin carrier is ethyl cellulose or polyvinyl butyral. 3. Processed pigments 12 to 15 (wt%), in which fine particle pigments are dispersed in a resin carrier, are dispersed and dissolved in diethylene glycol monobutyl ether 15 to 20 (wt%), and the mixture thus dispersed is dissolved in oleic acid. A method for producing vermillion liquor, which comprises dispersing and dissolving in 30 to 40 (wt%), and further dispersing and dissolving the mixture into 15 to 40 (wt%) refined castor oil. 4. The method for producing vermilion liquid according to claim 1, wherein the resin carrier is ethyl cellulose or polyvinyl butyral.