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AssigneeKawasaki Steel Corporation
InventorsTsuneyoshi Wakui, Takeo Ohnishi, Yuji Shimoyama, Hideo Kuguminato, Fumio Kosumi, Tadaaki Yasumi, Hironobu Ohno, Toshio Akizuki, Fumiya Yanagishima
Estimating the term…
An uneven patterned metal strip or plate is formed with an uneven pattern as a surface decorative pattern. The pattern is constituted of one or more pattern unit containing a plurality of uneven dot. Each of the uneven dots has a size D. The uneven dots are arranged in a predetermined density to have given ratio .eta. of occupying area versus plane area in said pattern unit. The size D and area ratio .eta. being in a range of: 10.ltoreq.D.ltoreq.300 (.mu.m) 30.ltoreq..eta..ltoreq.100 (%) and the size of said pattern unit has minimum length of 1 mm.
An uneven patterned metal plate having a surface, on which a visual decorative uneven pattern is formed by at least one pattern unit, said plate having a plurality of pattern units, said pattern units being separated from each other by unpatterned plane areas free of uneven patterns, each of said pattern units being constituted by and with a plurality of uneven dots, each of which has a size D, said uneven dots being arranged in a predetermined density to have a given ratio .eta. of the occupied area versus the plane area in said pattern unit, said plane area having a surface roughness Ra which is equal to or less than 40 .mu.m, said size D and area ratio .eta. being in the range of:
A process for forming an uneven pattern on a metal strip comprising the steps of:
A metal plate having a surface with a visual decorative pattern which is constituted with a plurality of pattern segments, each of said pattern segments including a plurality of dots comprising a depression, a projection or a combination of a depression and a projection, each individual dot being of the size D, and said dots being arranged in said each pattern segment at a predetermined density to provide a given ratio .eta. of occupying area versus plane area in said pattern segment,
A metal plate having a surface with a visually decorative pattern which is constituted with a plurality of pattern segments, each of said pattern segments including a plurality of dots comprising a combination of an essentially circular projection and an annular depression surrounding said depression, each individual dot being in the size D, and said dots being arranged in each pattern segment at a predetermined density to provide a given ratio .eta. of occupying area versus plane area in said pattern segment,
A laminated patterned metal plate the surface of which includes flat areas and a multiplicity of impressions arranged in groups in accordance with a predetermined geometric pattern on the surface of said plate,
A metal plate having a substantially flat surface provided with a specially patterned plane area, the surface of said plane area being modified by the presence of a multiplicity of spaced-apart impressions formed in said plate and arranged in groups in accordance with a predetermined pattern and at a predetermined density on said substantially flat surface, said impressions being positioned between plane areas and including peak portions which extend beyond said substantially flat surface and depressed portions which extend within said plate beneath said substantially flat surface,
In a process for forming a metal plate having a substantially flat surface provided with a specifically patterned plane area, the steps which comprise dulling to the surface of said plane area a multiplicity of spaced-apart impressions formed in said plate and arranged in groups in accordance with a predetermined pattern and at a predetermined density on said substantially flat surface, said dulling being applied by a temper roll having a surface roughness Ra equal to or less than 0.40 .mu.m, said impression being positioned between plane areas and including peak portions which extend beyond said substantially flat surface and depressed portions which extend within said plane beneath said substantially flat surface,
Dependencies are inferred from the claim text.