JPS5845061A - Plastic type - Google Patents

Abstract

PURPOSE:To prevent the edges of a plastic type from being destroyed and eliminate the necessity for plating the type by using a synthetic resin primarily composed of nylon resin as its base material, fiber like inorganic substance and pulverized inorganic substance as a material for forming plastic types. CONSTITUTION:A type 2 is formed by using 66 nylon resin 11 as a base material and mixing glass fiber 10 and pulverized silicone family inorganic substance 12. The type face 2a thus formed is durable for more than about 5 million times when it is used for a high speed serial printer, or is durable for more than 10 million times by 1 spoke. By the use of silicone family inorganic substance, the strength of the type 2 has been intensified and its resistance for crack has also been raised, therefore it is possible to lengthen the life of a plastic type without plating it.

Description

[Detailed Description of the Invention] The present invention relates to type used in serial printers, etc.
In particular, it relates to the improvement of plastic type using gflll resin for a 1m base material.

Conventional type wheels were typefaces made up of individual elements, but recently various type wheels with low inertia and type units that can be easily attached and detached have been developed and put into practical use in order to accommodate high-speed printers. Petal type wheels (gauge type and tiger crown type are widely used. These type wheels are used in the printing section of banking terminals and word processors in each building. Types that can be used for these are numbers and alphabets. y) letter, q! In addition to the r spear symbol, katakana, hiragana characters, and even kanji have come to be used frequently. Among these type wheel types, to explain the petal type as an example, 1. The first type is a flat type type wheel, which is a small example of a petal type type wheel. 1/H
A @ member diagram, -3 Aku (anti Jyubeikata Heisei 4 diagram of conventional type; 17 (b) is a cross-sectional view along the A-A' cross section of Plane 3 diagram (ai). 1 in the figure is Type wheel, 2 is type part, 2a is type, 3 is spoke, 4 is shaft, 51i square, b#i platen, 7 is printing paper, 8 is ink phone, 9 is nickel metal, 10 is glass fiber, 11it6
6 shows the nylon resin part.

As shown in Figure 1, several spokes 3 with type 2 at the tip of type wheel 1 are arranged in a petal-like manner, and the companion is integrated into the synthetic tree. It is nickel plated. As shown in Figure 21V(a)K, the type 2a of the ttI character part 2 of the type wheel is placed on the print paper 7 hung on the print sheet 6 with MJ's knees sandwiching the ink ribbon 8, and placed in the print standby position. A hammer 5 is disposed at the rear of the back surface of the 6-character type portion 2 with a gap therebetween.

The center part of the type wheel 1 is attached to the shaft part 4 and
Due to the rotation of the print wheel 1, the print wheel 1 is also rotated so that the printing portion 2 at the tip of the spoke 3 is always at the same printing position on the platen 6. Then, as shown in FIG. 2 (bl), the desired type part 2 is held in a predetermined position and the back side of the type part 2 is struck from behind by a hammer 5 to print on the printing paper 7 on the front side of the platen 6. be.

Petal-shaped typefaces are required to have various characteristics due to harsh usage conditions due to increased speed of printers. For example, the durability of the spokes 3 is such that they will not undergo permanent deformation due to repeated stress of 10 million times. It is also required that the vibrations in the front, rear, left and right directions after the printing decreases disappear as soon as possible. The print surface has good print clarity of 500
It is required to withstand continuous printing 10,000 times.

And the whole must be as lightweight and low cost as possible.

In order to satisfy these required characteristics (a variety of studies have been conducted on plastic type type), a large amount of prior art has been proposed, particularly regarding the material of the base material. Therefore, the petal-type wheel shown in Figure 3 (ta) and (ttJ
As shown in the figure, 66 nylon fiber 11 is used as the base material and glass fiber 10 (diameter 0.01 mm, length 0.1 to 0.3 mm) is used as the base material.
) was applied to 25 to 35 iifi to form a glass C character, and the type part 2V was nickel plated 9 (
r4 thickness 20-30μ7n). When this was used in a high-speed serial printer, it was approximately 50% in terms of type 2a.
It has a durability of over 0 times and 10 million times per spoke.

However, according to this conventional method, it is necessary to apply plating such as nickel plating after plastic molding, which complicates the process. The drawback is that the work is expensive and the cost is low. Another disadvantage is that if the plating peels off during use, the negative print quality due to heat loss will worsen.

Provides two-stick type.

The present invention is a plastic type formed by molding a synthetic resin material containing a fibrous inorganic material using a nylon resin as a base material, and is an h-stick type formed by molding the synthetic resin material containing a granular inorganic material. In this way, long-life plastic type can be obtained.

Hereinafter, one embodiment of the present invention will be described with reference to Figures 4(a) and 5(b). Figure 4(a) is a plan view of a printing type according to the present invention, and Figure 4(b) ) is B in Figure 4(a)
FIG. 5, which is a 117i plane view taken along the -B' cross section, is a graph showing the 4-mill life of type according to the present invention and the conventional method.

In the figure, 12 indicates a granular silicon-based unscrupulous material.

Also, the same parts as in FIGS. 3(a) and 3(b) are shown with the same symbols.

As shown in FIGS. 4(a) and 4(b), 66 nylon resin 11 is used as a base material, and glass fiber 10 and granular silicon-based inorganic material 12 are mixed therein. I used this in a high-speed serial printer, and it was about 500 characters with type 2a + 1.
It has a durability of more than 10,000 times, and a single spoke has a durability of more than 10,000,000 times.

As shown in graph H shown in Figure 5, when we look at the number of printings when the wear on the surface of ¥2- reaches the allowable wear of 3Ik, we can see that the desired 50
It can be seen that it has exceeded 0,000 times. As shown in graph (2), the number of printings for the conventional type printed letters, which is also shown, exceeds the desired 5,000,000 times. However, in the conventional method, the surface of the type is plated with nickel, so there is little damage to the plating, but the results show that after the plating peels off around 3.5 million prints, the plastic wears out rapidly. There is. This is because the nylon resin 11 surrounding the glass fibers 10 wears out quickly. Furthermore, the glass fibers 10 often fall off, and the edges of the type are often chipped.

Therefore, if the plating peels off, not only will it wear out quickly, but the type will also chip, making it unusable. However, in the present invention, the strength of the type part 20 is increased by using the granular silicon thread inorganic material, and the resistance to chipping is increased, and a long life can be obtained without plating.

As explained above, according to the Vc heather invention, there is no chipping at the edges of the letters due to the removal of bathing from the ultra-fine glass 9, and there is no possibility that the quality of the letters suddenly deteriorates during printing. There is an effect that a desired lifespan can be obtained without applying T-. In addition, since there is no Metsu V' layer, the etch of the type becomes smaller, resulting in clearer printing. Furthermore, since there is no 8 hardness in the plating process, the process is short, work management is easy, and costs can be easily reduced.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the flower*8il type wheel, Fig. 2 (a), (b) f'; is a plan view of the type made by the conventional method, and FIG. 3(b) is the A-A of FIG. 3(a).
Figure 4 (a) is a plan view of the type according to the present invention, Figure 4 (b) is a plane view of the type according to the present invention (B-B of aJ).
5 is a graph showing the wear life of type according to the present invention and the conventional method. In the figure, l is type wheel, 2 is type part, 2a is type, 3 is spoke, 5 is hammer, 6 is platen, 7 is for printing; 8 is ink ribbon, 9 is nickel plating,
10 is glass fiber, 11 is 6G nylon, and 12 is a granular silicon-based 4iA material.竿／诸 う す 翓）, f7 う fig (k) 14 fig. and L) 蒅す fig.
'y5 figure

Claims (1)

[Claims] A glass type type formed by molding a synthetic resin material based on nylon resin and containing a MM-like non-grain material, wherein the synthetic resin material contains a granular inorganic material. Print.