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US 6,270,620 B1Granted
Etching device
AssigneeWorld Wiser Electronics Inc.
InventorFan Chih-Peng
Life of this patent
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AssigneeWorld Wiser Electronics Inc.
InventorFan Chih-Peng
Estimating the term…
An etching device capable of forming a uniform etchant film. The etching device is disposed on a plurality of parallel and coplanar hollow sheet-type rollers used to support a double-sided board. A plurality of first etchant nozzles is disposed under the hollow sheet-type rollers. The device has several solid rollers, several rows of second etchant nozzles and several rows of air nozzles. The solid rollers are coplanarly disposed over the hollow sheet-type rollers and are parallel to each other. The adjacent solid rollers comprise an interval, and the intervals are divided into several first intervals and several second intervals. The solid rollers touch the double-sided board to make an etchant film covering the double-sided board more uniform. The rows of second etchant nozzles are disposed over the first intervals and parallel to axes of the solid rollers. The rows of air nozzles are disposed over the second intervals and parallel to the axes of the solid rollers.
An etching device capable of forming a uniform etchant film, the etching device disposed on a plurality of parallel and coplanar hollow rollers used to support a double-sided board, wherein a plurality of first etchant nozzles is disposed under the hollow rollers, the device comprising:
An etching device suitable for an etching process of a double-sided board, the etching device comprising:
Dependencies are inferred from the claim text.