RECESS-AND-PROTRUSION-FORMED BODY
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United States of America Patent
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app pub date -
Feb 18, 2016
filing date -
Feb 24, 2015
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Abstract
In a groove-formed body, recesses and protrusions are formed in a resin plate by irradiating a laser. Each of four recesses extend from an intersection point thereof. When forming each of the recesses in the resin plate, a portion at the intersection point of the recesses is an irradiation stop position of the laser, and an amount of heat generated by the laser on the resin plate is decreased. This enables a protrusion to be suppressed from being formed on either side of the intersection point of the recesses, and enables a protrusion to be suppressed from being disposed between the portion of the recesses at the intersection point, and a portion other than at the intersection point.
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