JP2547262B2 - Method of manufacturing glaze baking substrate - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a glaze baking substrate which is preferably used as a glaze substrate for a thermal head or a HIC substrate with glaze.

[Prior Art] Since the glaze layer (made of an inorganic material mainly composed of glass) has a smoother surface in the glaze substrate, the accuracy of the wiring pattern formed on the surface is improved. Further, since the thermal conductivity is poor, the resistors formed on the surface have a better rise of heat generation, or have a smaller thermal effect on the adjacent printed wiring. Utilizing the above properties of the glaze layer, the glaze layer is suitably used for a glaze substrate for a thermal head used in a word processor, an electronic typewriter, a printer or the like, or a HIC substrate with a glaze.

The substrate with glaze is obtained by repeating the printing and drying of the glaze paste on the ceramic substrate, and then baking the laminated thin film glaze layer (total thickness is about 3 to 200 μm) to form a multilayer baking glaze layer on the substrate. Form.

In the prior art, a glaze substrate is manufactured by using a white-based glaze paste on a white-based ceramic substrate.

[Problems to be Solved by the Invention] However, when a glazed substrate is manufactured using a white-colored glaze paste on a white-colored ceramic substrate as in the above-described conventional technique, when the printed glaze paste is dried. Since the entire substrate with glaze looks whiteish and the glaze layer is very thin, it was almost impossible to visually discern how many layers of glaze paste were printed. As a result, the number of times of printing may be wrong, or the glaze-laminated substrate may be mixed with a material having a different number of layers. In some cases, it cannot be distinguished from an unprinted substrate.

The object of the present invention has been made in view of the above circumstances, and provides a method for manufacturing a glaze baking substrate capable of quickly determining the number or types of layers of the glaze paste printed on the ceramic substrate in the manufacturing process with the naked eye. Especially.

[Means for Solving the Problems] In order to solve the above-mentioned problems, a method for manufacturing a glaze baking substrate of the present invention provides a ceramic substrate with a color different from that of the ceramic substrate by a synthetic coloring agent that thermally decomposes during baking. The technical means is to form a plurality of dried glaze layers by printing and drying the colored glaze paste, and then baking the glaze layers, and further, changing the color of the colored glaze paste for each layer. The technical means is that the color of the colored glaze paste is changed according to the type of the glaze paste.

[Operation and effect of the invention] The glaze baking substrate of the present invention has the above-mentioned constitution, and in (1), since the shade of the color of the glaze layer clearly changes depending on the number of laminated layers, (effect) the manufacturing process In, the number of layers of the glaze paste printed on the ceramic substrate can be quickly discriminated with the naked eye, and it is possible to prevent the number of times of printing from being mistaken, or to prevent an object having a different number of layers from being mixed into the substrate on which the glaze has been laminated.

Regarding claim 2, (action) By changing the color of the glaze paste for each layer, (effect) each layer can be more clearly distinguished.

According to the third aspect, by changing the coloring depending on the (function) type of the glaze paste, it is possible to prevent the glaze paste from different types (effect) from being mixed.

[Embodiment] A manufacturing process of a glaze-baked substrate according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

The glaze baking substrate A is obtained by repeating screen printing of a glaze paste colored in crimson on the ceramic substrate 1 and drying to obtain a crimson glaze first layer 2, a crimson glaze second layer 3, and a crimson glaze third layer. 4 is laminated and these glaze layers 2, 3 and 4 are baked.

The ceramic substrate 1 is mainly made of alumina (90 to 99.9% by weight) and has a thickness of 0.5 to 2.0 mm.

The total thickness of the first glaze layer 2, the second glaze layer 3, and the third glaze layer 4 is in the range of about 3 to 200 μm.

(Production process of colored glaze paste) The glaze paste colored light pink is first prepared by diluting solvent 10 such as butycarbitol for glaze paste.
In the present embodiment, 1 to 2 g of a red-colored synthetic colorant is mixed with 0 g. Next, this mixture is strained with a cloth to remove undissolved substances. Next, this colored diluted solvent is added when adjusting the viscosity of the glaze paste.

(Step of forming baked glaze layer) On the ceramic substrate 1 (Fig. 2), the light reddish glaze paste produced in the above manufacturing step is screen-printed and then dried. A light red glaze first layer 2 is formed by drying (FIG. 3), and a light red glaze paste is further screen-printed thereon and then dried (fourth).
Figure). A light pink glaze second layer 3 is formed, which produces a visually distinct color difference compared to the first layer 2 alone. Further, a light pink glaze paste is screen-printed thereon and then dried (FIG. 5). A light red glaze third layer 4 is formed, and the first layer 2 and the second layer
Compared with the case of layer 3, a color difference that is clearly discernible with the naked eye is produced. Glaze first layer 2, glaze second layer 3,
The glaze third layer 4 is baked at around 1100 ° C. The synthetic colorants used in this example are pyrolyzed at low temperatures (about 200 ° C.) and are therefore transparent after baking.

(Function) If you use a glaze paste colored to an appropriate level,
The difference in the number of layers is clearly shown in the difference in shade of the glaze layer. (Effect) The number of layers can be quickly discriminated with the naked eye, the number of prints may be incorrect, or the layers may be laminated on the glaze laminated substrate. It is possible to prevent mixing of different numbers.

 The present invention includes the following modifications other than the above-mentioned embodiment.

Coloring is changed according to the type of glaze paste to prevent mixing when different types of glaze paste are used.

When manufacturing a glaze baking board in which multiple glaze layers are baked using the same quality glaze paste, the color is changed for each layer.

A glaze layer partially formed on a ceramic substrate.

Other ceramic materials may be used for the ceramic substrate.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a partially cutout of a glaze substrate according to the present invention. 2 to 5 are partial perspective views of the manufacturing process. In the figure, A ... Glaze printed substrate, 1 ... Ceramic substrate,
2 ... Light red glaze first layer, 3 ... Light red glaze second layer, 4 ... Light red glaze third layer

Claims (3)

(57) [Claims] 1. A plurality of glaze layers formed by printing and drying a glaze paste colored to a color different from the color of the ceramic substrate with a synthetic colorant that is thermally decomposed during baking, and then forming the glaze layers. A method for manufacturing a glaze baking substrate, which comprises: 2. The method of manufacturing a glaze baking substrate according to claim 1, wherein the color of the colored glaze paste is changed for each layer. 3. The method for manufacturing a glaze baking substrate according to claim 1, wherein the color of the colored glaze paste is changed according to the type of the glaze paste.