JPH05167219A - Substrate printing method - Google Patents

Abstract

PURPOSE:To distinguish between the inside and the outside of a substrate as well as to judge the mounted position of an electric circuit part from the back side by a method wherein a part layout chart is directly printed on both front and back sides of the substrate. CONSTITUTION:The name of a mounted part is printed in letters of normal form in the part layout chart 11 printed on the surface of a printed substrate, but the letters of the part layout chart on the back side of the substrate are printed inversely. The part layout on the back side of the substrate is printed in such a manner that the printed letters can be read from the back side. For example, when a part is mounted on the address 11-1 having the vertical shaft's address symbol G12 and the horizontal shaft's address symbol G, the part layout chart 11 printed on the substrate surface becomes hardly seen because it is hidden by the part, but the mounting of part can be conducted by looking at the part layout on the back side of the substrate. Also, as the name of mounting part of the part layout chart on the back side of the substrate is printed in inverted letters, the part can be mounted without making a mistake in distinguishing the front and the back sides of the substrate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of printing a board, and in particular, a board layout in which a component layout printed on a printed circuit board on which an electric circuit is mounted is designed so that the connection relation of mounted parts can be easily traced. Regarding the method.

[0002]

2. Description of the Related Art When inspecting or repairing a circuit board on which an electric circuit is mounted, it is difficult to compare a specific mounting component with a wiring diagram only by using an abstractly drawn electric wiring diagram. It is necessary to have a component layout diagram that allows the component placement of mounted components to be seen at a glance.

That is, such a conventional component layout drawing is described on a drawing sheet and is generally composed of a board plan view of the board viewed from the front side and a board plan view viewed from the back side. .. Especially for printed circuit boards with circuit patterns formed on both sides, it is indispensable to immediately know the connection status of mounted components and the position of specific check pins on both sides of the board. Is proposed.

FIG. 3 is a conventional component layout drawing devised so as to easily trace the connection relationship of mounted components formed on the front and back of such a circuit board.
This is disclosed in Japanese Patent No. 3361.

In the drawings, in a component layout drawing described on a conventional drawing sheet, a front view 21 of a board on which an electric circuit component is mounted is viewed from the front side and a printed circuit board drawn by the front view 21 is symmetrical. A rear view 22 of the printed circuit board obtained when developed 180 ° about axis 23 is depicted.
These front view 21 and back view 22 show the symmetry axis 2
Address symbols 1, 2, 3, at predetermined intervals in the direction of 3
4. ． ． ． The vertical axis 24 marked with and the symmetry axis 23 as the center, and the address symbols A, B, C
D. ． ． ． The horizontal axis 25 is attached.

Next, a description will be given of the case of searching the layout position of the electric circuit component mounted on the printed circuit board by using the component layout drawing described above on the conventional drawing paper. In the component layout diagram shown in FIG. 3, address symbols are added to the vertical axis 24 and the horizontal axis 25, but the components within the circle shown in the front view 21, such as the capacitor C1, are indicated by 4 on the front view 21.
You can see that it is at address D. When searching for this in the rear view 22, it can be easily found by searching in the 4D address of the rear view 22 corresponding to the address symbol of the front view 21.

[0007] As described above, the conventional component layout is based on the symmetry axis 2
Since the front surface and the back surface of the printed circuit board are drawn with 3 as the center, the front surface pattern and the back surface pattern can be easily traced.

[0008]

However, in the case of using the conventional component layout drawing, always refer to the drawing sheet as shown in FIG. 3 when searching the layout position of the electric circuit components mounted on the printed circuit board. It is not only very troublesome to do, but also when mounting circuit components on the printed circuit board, the component layout is not drawn on the substrate, so the front and back of the substrate are mistakenly mounted. There was a problem that there is a possibility of doing.

The present invention has been made in order to solve the above-mentioned problems, and the component layout is directly printed on the front surface and the back surface of the substrate, and moreover, the front surface and the back surface can be clearly distinguished, and It is an object of the present invention to obtain a method for printing on a substrate that allows the mounting position of an electric circuit component to be easily determined from the back surface.

[0010]

In order to achieve the above object, a method of printing a board according to a first aspect of the present invention is to print a component layout diagram on the front surface of a printed board and to print from the back surface to the front surface of the board. It is characterized in that a component layout diagram through which the component layout is seen is printed on the back surface of the substrate by the reverse letters of the front surface printing characters.

According to a second aspect of the present invention, in the method of printing a board, the board layout is printed on the front surface of the printed board in a predetermined typeface, and the board layout is seen through the board rear surface from the back surface of the board. It is characterized by printing on the back surface of the substrate with a typeface that is clearly different from the printed typeface on the front side.

[0012]

Therefore, according to the board printing method of the present invention, the component layout of the parts to be mounted is directly printed on both sides of the board (for example, by silk printing), and the front and back surfaces of the printed board are Because it can be clearly distinguished by the typeface, etc.
It becomes possible to easily determine the mounting position of the electric circuit component from the surface of the printed circuit board without using a drawing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are board plan views for showing a component layout printed on a printed board by the printing method according to the present embodiment. FIG. 1 shows a component layout diagram 11 printed on the substrate surface of the printed circuit board of this embodiment.
FIG. 2 shows a component layout diagram 12 printed on the back surface of the printed circuit board of this embodiment. As can be seen from FIGS. 1 and 2, the component layout diagram 11 printed on the surface of the printed circuit board has the characters of the mounted components printed in regular characters.
The component layout diagram on the back surface of the substrate is shown in reverse letters in FIG. And the component layout printed on the back of the board is
It is printed in a format in which the arrangement of parts on the front side is seen through from the back side.

Further, in the printed circuit board of this embodiment, each part of the board is divided into a plurality of locations which are identified by an address symbol on the vertical axis and an address symbol on the horizontal axis. For example,
The address code of the location where the address code on the vertical axis is 12 and the address code on the horizontal axis is G is G12. As shown in FIG. 1, the mounting position of the IC mounted at the location G12 is indicated by the location portion 11-1 in the component layout diagram 11 on the substrate surface. The mounting position of the IC on the back surface of the board in the component layout diagram 12 is indicated by a location portion 12-1 in FIG.

Next, a description will be given of a case where the placement position of the mounted component is searched for by using the printed circuit board of this embodiment on which the component placement diagram as described above is printed.

In the printed circuit board shown in FIGS. 1 and 2, the component layout diagram 11 printed on the surface of the substrate is hidden by the mounted components when the mounted components are actually mounted, which makes it difficult to see the components. Also, since the component layout diagram 12 showing the layout of the mounted components is printed, it is possible to easily search for the mounted components by looking at the back surface. Further, in the component layout diagram 12 on the back surface of the substrate, the mounted component names are printed in reverse letters, and further, the layout of the components on the front surface is printed in a format seen through from the back surface side. Therefore, the operator can easily distinguish the front surface and the back surface of the board, and the components can be easily mounted without making a mistake in the front surface and the back surface of the board. Further, even when inspecting or repairing the circuit board, it is possible to easily search and track the mounted components.

In the above embodiment, the case where the component layout printed on the front surface of the printed circuit board is printed in normal characters and the component layout printed on the back surface is printed in reverse character has been described. The method for easily distinguishing the front surface and the back surface is not limited to that. For example, a component layout drawing is printed on the front surface of a printed circuit board in a predetermined typeface, and a component layout drawing in a format in which the front surface component layout is seen through from the back side of the substrate You may make it print on the back surface of.

[0018]

As described above, in the method of printing a board of the present invention, the component layout of the components to be mounted can be printed directly on both sides of the board, and the front and back surfaces of the printed board are printed fonts or the like. Since they can be clearly distinguished, it is not necessary to use a drawing sheet, and the mounting position of the electric circuit component can be easily determined by looking at the component layout printed directly on the board. Therefore, there is an effect that the time for inspecting or repairing the circuit board can be shortened.

[Brief description of drawings]

FIG. 1 is a plan view showing a component layout printed on a substrate surface by a printing method according to an embodiment.

FIG. 2 is a plan view showing a component layout printed on the back surface of the substrate by the printing method according to the present embodiment.

FIG. 3 is a conventional component layout plan devised so as to easily trace the connection relationship of the mounted components formed on the front and back of the circuit board.

[Explanation of symbols]

 11 Component layout diagram printed on the front surface of the printed circuit board 12 Component layout diagram printed on the back surface of the printed circuit board 21 Component layout diagram on the board surface printed on the drawing paper 22 Component layout diagram on the back surface of the board printed on the drawing paper

Claims (2)

[Claims] 1. A method of printing a printed circuit board on which an electric circuit is mounted, wherein a component layout drawing is printed on the front surface of the printed circuit board, and the component layout drawing is a reverse view of the printed characters on the surface of the printed board. A method for printing on a substrate, which comprises printing on the back surface of the substrate with letters. 2. A method of printing a printed circuit board on which an electric circuit is mounted, wherein a component layout drawing is printed on a front surface of the printed circuit board in a predetermined typeface, and a component layout drawing is seen from the rear surface of the substrate through the surface of the component layout. A printing method for a substrate, which is characterized by printing on the back surface of the substrate with a typeface that is clearly different from the printed typeface.