Radial line dial plate and automobile meter provided with radial line dial plate
A radial line dial plate includes: a substrate body made of resin on which a radial line mark region is molded by a die mark-molding-face of a molding die; a plurality of fine grooves that extend radially outward in a radial direction from a center of the radial line mark region without intersecting with each other and are formed such that a distance therebetween is 1 μm or less at an outermost peripheral end to give a radial line pattern to the radial line mark region; and a metal thin film that is deposited to at least the radial line mark region of the substrate body.
1. A radial line dial plate comprising:
a substrate body made of resin on which a radial line mark region is molded by a die mark-molding-face of a molding die;
a plurality of fine grooves that extend radially outward in a radial direction from a center of the radial line mark region without intersecting with each other and are formed such that a distance therebetween is 1 μm or less at an outermost peripheral end to give a radial line pattern to the radial line mark region; and
a metal thin film that is deposited to at least the radial line mark region of the substrate body.
2. The radial line dial plate according to claim 1 , wherein
the grooves are configured such that a depth between adjacent grooves is different.
3. The radial line dial plate according to claim 2 , wherein
the substrate body is molded by a resin material having excellent transferability.
4. An automobile meter provided with the radial line dial plate according to claim 2 .
5. The radial line dial plate according to claim 1 , wherein
the substrate body is molded by a resin material having excellent transferability.
6. An automobile meter provided with the radial line dial plate according to claim 5 .
7. An automobile meter provided with the radial line dial plate according to claim 1 .
8. A radial line dial plate comprising:
a substrate body made of resin that is integrally molded by a molding die; and
a metal thin film that is deposited to at least a radial line mark region provided on a surface of the substrate body, wherein
the radial line mark region extends in a radial direction from a center of the substrate body and is formed into a radial line pattern shape by a large number of groove portions which are random in groove depth, respectively.
9. The radial line dial plate according to claim 8 , wherein
the groove portions are randomly formed to have a groove depth of 1 μm as a maximum value or less.
10. The radial line dial plate according to claim 9 , wherein
a large number of mountain portions formed between the groove portions are formed at a constant pitch.
11. An automobile meter provided with the radial line dial plate according to claim 9 .
12. The radial line dial plate according to claim 8 , wherein
a large number of mountain portions formed between the groove portions are formed at a constant pitch.
13. An automobile meter provided with the radial line dial plate according to claim 12 .
14. An automobile meter provided with the radial line dial plate according to claim 8 .