One or more charging members used in the manufacture of a lapping plate, and related apparatuses and methods of making

An apparatus for processing a major surface of a lapping plate platen during the manufacture of an abrasive surface on the major surface of the lapping plate platen, wherein the apparatus comprises:

• a) a rotatable platter configured to secure and physically support the lapping plate platen during processing of the major surface of the lapping plate platen;
• b) at least one processing head mechanism that is rotatably and removably coupled to a processing head, wherein the processing head comprises:
• i) a base;
• ii) at least one charging member coupled to the base, wherein the at least one charging member has at least one channel opening that defines at least two land areas, wherein the processing head mechanism is configured to move the processing head in at least the z-axis direction to contact the major surface of the lapping plate platen with the at least two land areas under pressure to charge abrasive particles into the surface of the lapping plate platen, wherein the processing head mechanism is configured to rotate the processing head about its central axis in the z-axis direction while the at least two land areas of the at least one charging member are in contact with the major surface of the lapping plate platen under pressure to charge abrasive particles into the surface of the lapping plate platen, wherein the at least one channel opening is located proximal to an outer perimeter of the charging member, wherein the at least one channel opening permits abrasive slurry to flow through the channel opening from a position outside the charging member outer perimeter to a position inside the charging member outer perimeter when the at least two land areas are in contact with the major surface of the lapping plate platen, and wherein the at least one channel comprises two sidewalls that extend from the outer perimeter of the charging member around the center of charging member and toward the center of the charging member in a spiral manner.

An apparatus for processing a major surface of a lapping plate platen during the manufacture of an abrasive surface on the major surface of the lapping plate platen, wherein the apparatus comprises:

• a) a rotatable platter configured to secure and physically support the lapping plate platen during processing of the major surface of the lapping plate platen;
• b) at least one processing head mechanism that is rotatably and removably coupled to a processing head, wherein the processing head comprises:
• i) a base;
• ii) at least one charging member coupled to the base, wherein the at least one charging member has at least one channel opening that defines at least two land areas, wherein the processing head mechanism is configured to move the processing head in at least the z-axis direction to contact the major surface of the lapping plate platen with the at least two land areas under pressure to charge abrasive particles into the surface of the lapping plate platen, wherein the processing head mechanism is configured to rotate the processing head about its central axis in the z-axis direction while the at least two land areas of the at least one charging member are in contact with the major surface of the lapping plate platen under pressure to charge abrasive particles into the surface of the lapping plate platen, wherein the at least one channel opening is located proximal to an outer perimeter of the charging member, wherein the at least one channel opening permits abrasive slurry to flow through the channel opening from a position outside the charging member outer perimeter to a position inside the charging member outer perimeter when the at least two land areas are in contact with the major surface of the lapping plate platen, wherein the at least one charging member comprises at least one annular ridge extending around the outer perimeter of the charging member, wherein the annular ridge comprises the at least one channel, wherein the at least one channel comprises two side walls that extend a length from the outer perimeter of the charging member toward the center of the charging member, and wherein the length is in range from 1/16 inches to 1⅝ inches.