JPH03239552A - Printing method of printed-wiring board - Google Patents

Abstract

PURPOSE:To prevent printed control information from being eroded by later process by a method wherein the product control information such as lot No., part No. and the name of material or manufacturer is printed on a laminated plate covered with a metal foil with resist liquid, a circuit pattern is printed thereon with the resist liquid and the plate is thereafter etched. CONSTITUTION:The product control information such as lot No., part No., the name of resin material of a substrate 20a and the name of additive, filler and manufacturer is printed on the metal foil 20b placed on a laminated plate 20 with resist liquid. A circuit pattern is printed on the metal foil 20b of the laminated plate 20 with the resist liquid. The exposed parts of the metal foil other than a symbol 21a of the control information printed with the resist liquid and the circuit pattern 22a delineated therewith are removed by treatment with etching liquid. The symbol 21a of the control information and the circuit pattern 22a are removed with a solvent and a circuit 22 is formed together with a control symbol 21 made of the same metal as that of the circuit 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a printing method for printing product management information such as a rod number, product number, material name, manufacturer name, etc. on a printed wiring board.

In recent years, when manufacturing printed wiring boards, it is necessary to display the name of the resin used in the metal foil laminate, the names of additives, fillers, etc. until the final process is reached, otherwise multiple printed wiring boards will be manufactured. It is not possible to manage when a multilayer printed wiring board is formed using a press. Therefore, in the past, a slip containing product management information such as the resin name, additive name, filler name, manufacturer's name, etc. was attached to the metal foil-clad laminate, or a label containing the above management information was attached. was attached to a metal foil laminate.

[Problem to be solved by the invention J] However, in the manufacturing process of printed wiring boards, they are immersed in various chemicals, so labels cannot withstand them; The problem was that there was no.

The present invention was invented in view of the problems of the above-mentioned conventional examples, and its purpose is to easily write management information in the process of forming a circuit pattern on a metal laminated board. To provide a printing method on a printed wiring board in which management information is accurately left until the final process without being corrupted in subsequent processes.

[! How to Solve Problem 1 Jffi 1 The method of printing on a printed wiring board of the present invention includes printing product management information such as rod number, product number, material name, manufacturer name, etc. on the metal foil-clad laminate 20 with resist liquid. It is characterized by printing a circuit pattern using a resist solution and then performing an etching process, and by adopting such a configuration,
The object of the present invention has been achieved by solving the problems of the conventional example described above.

[Function] Then, product management information such as lot number, product number, material name, manufacturer name, etc. is printed on the metal foil-clad laminate 20 using a resist solution, and a circuit pattern is printed using the resist solution, and then an etching process is performed. At the same time as the etching process for forming the circuit 22, a management code 21 is formed on the metal part to indicate product management information such as the rod number, product number, material name, manufacturer's name, etc. Since the control code 21 is formed of the same metal as the circuit 22, the control code 21 will not be corroded even if it is immersed in a chemical solution or the like in the subsequent manufacturing process.

[Example 1] The present invention will be described in detail below based on an example shown in the accompanying drawings.

The metal foil-clad laminate 20 has a substrate made of a resin laminate, and a metal 120b such as copper foil is laminated on the substrate 20a. That is, prepreg is made by impregnating a base material such as glass cloth or paper with a thermosetting resin varnish such as epoxy resin, 7-ether resin, Teflon resin, or polyimide resin and drying it. sheets of prepreg and t
A metal foil-clad laminate is made by stacking metal foils such as i4M and molding them under heat and pressure. However, $1
Metal foil 2 of metal foil clad laminate 20 as shown in Figure (a)
First, as shown in Figure 1 (b), write the rod number, product number, material name of the resin for the substrate 20m, additive name, fife name, manufacturer name, or any other various information on the 0b with resist liquid as shown in Figure 1(b). Print any necessary product management information among the product management information. Reference numeral 21a in FIG. 1 indicates a symbol of management information printed with resist liquid. Next, Figure 1(c)
As shown in FIG. 2, a circuit pattern is printed using a resist solution on the metal M20b of the metal foil-clad laminate 20 using the same known method as in the prior art. 22m in FIG. 1 is a circuit pattern drawn with resist liquid. Next, the exposed parts of the metal foil other than the management information code 21a printed with the resist solution and the circuit pattern 22a drawn with the resist solution are removed by etching with an etching solution (see FIG. 1(d). )reference). Next, the management information code 21a printed with the resist liquid using a solvent and the circuit pattern 22m drawn with the resist liquid are removed to form the circuit 22, and the management code 21 is made of the same metal as the circuit 22.
is formed.

After applying the circuit 22, management code 21, etc. to the metal foil-clad laminate 20 as described above, it is subjected to finishing processes such as a two-song process, a warping process, a drilling process, a soldering process, and a mounting process. Although the printed wiring board 1 is manufactured,
By writing the management information as the management code 21 in this finishing process, the temperature conditions and other conditions of the finishing process can be managed, and the printed wiring board 1 can be easily controlled as shown in FIGS. When forming a multilayer printed wiring board by laminating and pressing a plurality of sheets of prepreg 24 as shown in FIG. It is possible and easy to manage. When a multilayer printed wiring board is formed, the portion of the printed wiring board 1 provided with the management code 21 is made into a transparent portion 25 so that the management code 21 can be seen through.

FIG. 4 shows another embodiment of the invention.

That is, in the embodiment shown in FIG.
First, any product management information such as the rod number, part number, material name, manufacturer name, etc. is printed using resist liquid, and then the circuit pattern is printed using resist liquid, and then etching is performed. In the embodiment shown in FIG. 4, a circuit pattern is printed using a resist liquid as shown in FIG. 4(b), and then product management information is printed using a resist liquid as shown in FIG. 4(e). Thereafter, an etching process is performed as shown in FIG. 4(d), and then the resist solution portion is removed as shown in FIG. 4(e).

In the present invention, when printing product management information using resist liquid, it is automatically printed using an ink jet printer or other printing means.

FIGS. 5 and 6 show a front view and a side view of the entire printing device, respectively. A front-back rail 7 is provided on the base 6, and a left-right rail 8 is attached to the front-back rail 7 so as to be movable in the front-back direction. The spatula 2 of A is attached so as to be movable in the left and right direction.

A longitudinal moving means 3 is constituted by the longitudinal rail 7, a horizontal rail 8 attached to the longitudinal rail so as to be movable longitudinally, and this moving mechanism. The freely attached head 2 and this moving mechanism constitute a left-right moving means 4. The head 2 is rotatable in plan view by a rotating means 5 consisting of a motor, an air ring, etc., and the rotation angle is arbitrary, for example, 90° to 180°. Ink particles C are ejected from the spatula 2 of the inkjet printer A, which are charged and deflected according to the amount of charge. The inkjet printer used here is a conventionally well-known inkjet printer (for example, a so-called charge control type). This charging control type divides the characters to be marked into pixels into a Todd matrix, and charges the ink particles C with a voltage proportional to the positional information of each pixel.
Furthermore, the pixel characters (characters composed of tods) are marked by deflecting them using an electrostatic field and allowing them to reach the object to be marked (that is, a printed wiring board in the present invention). FIG. 7 shows a diagram of the principle of this ink jet printer, in which ink made of resist liquid stored in an ink container 15 is pressurized by a pump 10 and is ejected from the head 2 (nozzle head) in the form of a liquid column. It is now possible to do so. Then, the liquid column ejected from the head 2 becomes ink particles C of a certain size due to the vibration of the electrostrictive element 11, and each ink particle C is charged by the charging electrode 12 with a voltage corresponding to the signal voltage. ,
When these charged ink particles C pass through the darkness of the deflection electrode 13, they are deflected according to the amount of charge and reach the moving marking object. captured by the tanker 14 and the recovery pump 17
Accordingly, the ink is collected into the ink container 15.

In order to print on the metal foil-covered laminate 20 using the above device, the robot that controls the forward and backward movement means 3, the left and right movement means 4, and the rotation means 5 is taught, and this teaching is completed. After that, the above-described apparatus is used to print on the metal foil-clad laminate 20. That is, the associated foil beam laminate 20 is placed on the mounting surface 16 on the upper surface of the base 6 of the device, and the spatula 2 of the inkjet printer A is placed at a predetermined position on the printed wiring board 1 based on the above teaching. It is controlled and printed using resist liquid.

[Effects of the Invention] As described above, in the present invention, product management information such as the rod number, product number, material name, manufacturer name, etc. is printed on a metal foil-clad laminate using a resist solution, and a circuit pattern is printed using the resist solution. Since the circuit pattern is printed and then etched, management information can be easily written in the process of forming the circuit pattern on the metal laminated board, and the written management information can also be printed on the metal cylinder part in the same way as the circuit. Since the material is coated, it is not damaged in subsequent steps and remains accurately until the final step, and can be easily managed up to the final step.

[Brief explanation of drawings]

1(a), (b), (c), (d), and (e) are explanatory diagrams showing the order of a printing method according to an example of the present invention, FIG. 2 is an exploded perspective view of a multilayer printed wiring board of the present invention, and FIG. Figure 3 is a perspective view of the same multilayer printed wiring board as above, and Figure 4 (a), (b), (c), and (d).
(e) is an explanatory diagram showing the order of the printing method on the other side of the present invention,
FIG. 5 is a front view of the printing device, FIG. 6 is a sectional view of the same as the above, and FIG. 7 is a schematic diagram of the principle of the inkjet printer of the same, and 20 is a metal foil-clad laminate.

Claims (1)

[Claims] (1) Product control information such as the rod number, product number, material name, and manufacturer's name is printed on a metal foil-clad laminate using a resist solution, and a circuit pattern is printed using the resist solution, followed by etching. A method of printing on printed wiring boards.