Functional cylinder body and manufacturing method therefor
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United States of America Patent
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Apr 23, 2019
Grant Date -
Mar 29, 2018
app pub date -
Mar 29, 2016
filing date -
Apr 21, 2015
priority date (Note) -
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Abstract
Provided are a functional cylinder body, including a plurality of layers having magnetic patterns and non-magnetic patterns formed adjacently, and a manufacturing method therefor. The functional cylinder body comprises at least: a cylinder main body; a first functional pattern part, which includes first patterns and first functional patterns, the first patterns having first recess patterns and first non-recess patterns formed by forming recesses on a first material layer made of any one of a magnetic material and a non-magnetic material, the first functional patterns being made of any one of the magnetic material and the non-magnetic material embedded in the first recess patterns; and a second functional pattern part, which is formed in a position of the cylinder main body shallower than a position of the first recess patterns and has magnetic patterns of the magnetic material and non-magnetic patterns of the non-magnetic material formed adjacently.
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