JPH0529317B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a printed wiring board, and particularly to a method of screen printing for forming a resist film and marking characters.

[Conventional technology]

Conventionally, in the manufacturing method of this type of printed wiring board, the positioning of the screen printing used in the process of forming the resist film and marking characters requires a positioning plate provided outside the part of the printed wiring board that will become the product. A pilot was used.

[Problem that the invention seeks to solve]

In the above-mentioned conventional printed wiring board manufacturing method, an alignment pilot installed outside the part of the printed wiring board that will become the product is used as a positioning method during screen printing. Printed wiring board 8 shown in Figure 2a, which is easy to confuse.
A printed wiring board with a rotationally symmetrical external shape such as , and a printed wiring board 9 shown in Fig. 2b, which is easy to mistake when identifying the product name.
There is no consideration given to groups of printed wiring boards with similar external shapes such as No. 10, and with the exception of pilots for positioning, only the appearance of the product is relied upon. The disadvantage is that it often happens.

In addition, in Fig. 2, 4 is a V cut, 5 to 7
indicates the character product name printed on the printed wiring board.

In contrast to the conventional printed wiring board manufacturing method described above,
The present invention has the difference that it facilitates the prevention of reverse printing during screen printing and product name identification by simultaneously screen printing individual product name characters into the product, which is more effective visually.

[Means for solving problems]

The method of manufacturing a printed wiring board of the present invention includes an etching step of forming a circuit on a copper-clad insulating board by etching and simultaneously forming a first product name letter, and a second etching step of forming a first product name letter at the same location as the first product name letter. a resist step of screen printing a resist film provided with product name characters on the insulating plate, and screen printing a third product name character having the same shape and the same location as the first product name character simultaneously with the marking characters on the resist film. The marking process includes a marking process.

[Example] Next, the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a printed wiring board manufactured according to an embodiment of the present invention. Copper-clad insulation board 1
Product name letters 1 are formed on the circuit 14 by etching at the same time as the circuit 14. Product name characters 2 are also formed by punched holes in a resist film 12 screen printed on an insulating plate 11. Further, product name characters 3 are formed on the screen printing 13 on the resist film 12 at the same time as the marking characters 15 .
However, these product name characters 1, 2, and 3 should all have the same shape and be formed at the same location.

〔Effect of the invention〕

As explained above, the present invention overlaps product name letters formed on a copper-clad insulating plate by etching during screen printing, and prints the product name letters in the same place using a resist coating and marking letters. , there is an effect that even if there is reverse printing during screen printing or a difference in product name, it can be quickly detected.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a printed wiring board produced according to an embodiment of the present invention, and FIG. 2 is a plan view of an example of a printed wiring board that is effective according to the present invention.
Figure a is a plan view of an example of a printed wiring board with a rotationally symmetrical outline that is effective in preventing reverse printing, and Figure 2b is a plan view of an example of a printed wiring board with a similar outline. 1-3, 5-7...Text product name, 4...V-cut, 8-10...Printed wiring board, 11...Insulating board,
12...Resist film, 14...Circuit, 15...
marking letters.

[Claims]

1. When screen printing a printing material using a screen printing machine, a step is provided on the printing table discharge side of the printing material, and the adsorption or clamping end of the retractable take-out arm enters the step; , set and fix the printed material on the printing table, capture (hold) the protruding edge of the printed material from the step with the suction or clamping end, and after printing, remove the printed material from the printing table. An automatic method for taking out printed matter, characterized by: 2. In a screen printing machine that sets and fixes a printed material brought in by an appropriate means on a printing table and prints a predetermined pattern on a screen, the printing table has a step on the discharge side of the printed material, and the step a take-out arm that can freely move forward and backward and move up and down, an end for suction or clamping that is provided at the end of the arm and that captures (holds) the printed material, and the take-out arm that can move forward and backward freely; 1. A screen printing machine with an automatic take-out mechanism for printed matter, comprising a sliding device for moving the take-out arm up and down, and a lifting device for moving the take-out arm up and down.