JP2000329518A - Method for measuring coordinate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a method for measuring coordinates without removing an ultraviolet-sensitive material and without carrying out a nondestructive inspection by arranging a shielding material for shielding ultraviolet rays by a specific value or more on the surface or outside an outer layer of an object to be measured, and measuring coordinates of the object. SOLUTION: The shielding material for shielding ultraviolet rays of a wavelength of 400 nm or shorter by 90% or more is arranged on the surface or outside an outer layer of an object to be measured, and then coordinates of the object are measured. In this case, a substrate 1 to be measured is obtained by forming a plurality of holes of a diameter of, e.g. 1 mm to a glass cloth- based epoxy resin copper clad laminate laminating the sheet with a photosensitive film 2 and exposing with the use of a negative film for circuit formation. The substrate 1 to be measured is put in a bag-shaped sensitizing prevention jig 6 reinforced by bonding a UV-cutting film 5 of, e.g. an ultraviolet transmittance of 0.5% or lower and a visible light transmittance of 89.7% to a PET film of a thickness of 175 μm, and placed on a light table of a second-dimension coordinate-measuring apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a coordinate measuring method.

[0002]

2. Description of the Related Art Coordinate measurement of a product using an ultraviolet-sensitive material has been performed by the following methods (a) to (c). (A) Coordinate measurement in a room such as a dark room where ultraviolet rays are blocked so as not to expose the ultraviolet-sensitive material. (B) Coordinate measurement after development is performed after exposing a necessary portion to remove unnecessary UV-sensitive material. (C) Coordinate measurement by a destructive test, assuming that the product is exposed.

[0003]

However, each of the above three methods (a) to (c) has a problem, and individually described, the method (a) blocks ultraviolet rays. The method (b) not only requires a step of performing exposure and development, but also partially requires the use of an ultraviolet-sensitive material. In order to be removed, there is a problem that the measurement is to be performed while the object to be measured itself is distorted, and the method (c) has a problem that it is difficult to increase the product yield. I have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a coordinate measuring method which does not greatly increase product cost, does not partially remove an ultraviolet-sensitive material, and does not perform a destructive inspection. The purpose is to provide.

[0005]

The present invention relates to the following. (1) A method of measuring the coordinates of the object to be measured after disposing a shielding material for shielding at least 90% of ultraviolet light having a wavelength of 400 nm or less on the outer surface or outside of the object to be measured using an ultraviolet-sensitive material. Coordinate measurement method.

(2) The coordinate measuring method according to (1), wherein the shielding material has a bag shape, and the inner surface thereof is reinforced by a reinforcing material.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The ultraviolet-sensitive material used in the present invention is a material which is sensitive to ultraviolet rays (wavelength: 4 to 400 nm) and has a characteristic of being insensitive to other visible light, infrared light and the like.

The shielding material used in the present invention is required to shield at least 90% of ultraviolet rays, and more preferably, it transmits at least 10% of visible light, because it is easy to handle.
This is because when the light-shielding rate of ultraviolet rays becomes less than 90%, the ultraviolet-sensitive material gradually starts to be exposed. As for the visible light, the workability can be improved as the transmittance increases.

With respect to the form of the shielding material, there are various types such as a resin and a film covering the outer layer surface of the object to be measured and a bag covering the outside of the object to be measured.
There is no particular limitation. When the above-mentioned bag is used, the outside of the bag may be used as a shielding material and the inside may be used as a reinforcing material.

For the coordinate measurement of the object to be measured, it is possible to use a commonly used coordinate measuring device using visible light, and since the object to be measured is covered with a shielding material, it can be measured without exposure. Can be.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a plurality of holes each having a diameter of 1 mm are formed in a glass cloth base epoxy resin copper-clad laminate, and then the photosensitive film 2 (Fotech H-N930 (trade name) manufactured by Hitachi Chemical Co., Ltd.) is formed. Was exposed using a negative film for forming a circuit to obtain a substrate 1 to be measured.

The substrate 1 to be measured is a UV-cut film 3 having an ultraviolet transmittance of 0.5% or less and a visible light transmittance of 89.7% (using Obic C (trade name) manufactured by Iuchi Seieido Co., Ltd.). Then, it was put into a bag-shaped photosensitive prevention jig 6 reinforced by bonding it to a PET film 4 having a thickness of 175 μm, and placed on a light table of a two-dimensional coordinate measuring machine 7 shown in FIG.

The photosensitive film 2 is a two-dimensional coordinate measuring machine 7
No sensitivity was observed even after the first hole having a diameter of 1 mm was measured by using No., and no abnormality was observed in the subsequent manufacturing steps.

[0014]

According to the present invention, since the coordinate measurement is performed using a shielding material that blocks ultraviolet rays by 90% or more, the ultraviolet-sensitive material can be exposed without preparing a special room such as a dark room. It is possible to prevent the cost of the product from increasing, and to increase the yield. In addition, since the measurement is not performed after the ultraviolet-sensitive material is partially removed, coordinate measurement can be performed with high accuracy without causing distortion of the measured object itself.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a substrate to be measured and a photosensitive prevention jig, showing one embodiment of the present invention.

FIG. 2 is a schematic side view in which the substrate to be measured and the photosensitive prevention jig shown in FIG. 1 are mounted on a two-dimensional coordinate measuring machine.

[Explanation of symbols]

1. 1. Substrate to be measured 2. photosensitive film UV cut film 4. PET film 6. 6. Exposure prevention jig 2D coordinate measuring instrument

Claims (2)

[Claims] 1. An ultraviolet ray having a wavelength of 400 nm or less is applied to the surface or outside of an outer layer of an object using an ultraviolet photosensitive material.
%, Wherein the coordinates of the object to be measured are measured after disposing a shielding material that shields at least%. 2. The coordinate measuring method according to claim 1, wherein the shielding member has a bag shape, and an inner surface thereof is reinforced by a reinforcing material.