Automatic lapping device for magnetic drum of magnetographic pri

Details Automatic lapping device for magnetic drum of magnetographic pri Automatic lapping device for magnetic drum of magnetographic pri

1990-05-03

1992-03-10

Kisliuk, Bruce M.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51145R, B24B 2100

Patent

active

050940350

ABSTRACT:
An automatic lapping device for polishing a surface of a magnetic drum of a magnetographic printing machine. The automatic lapping device comprises a lapping unit mounted on a carriage of a magnetic recording head, for polishing the magnetic drum surface, and the lapping unit includes a lapping sheet retainer movable between a stand-by position and an operating position, and thus, in the operating position, the lapping sheet held by the retainer is pressed against the drum surface with a constant pressure. To polish the drum surface, the magnetic drum is rotated by a recording motor and the magnetic drum surface is vertically scanned by the lapping unit while the retainer is in the operating position, utilizing a vertical scanning motor of the carriage, and after completing the vertical scanning, the retainer is moved to the stand-by position away from the drum surface. The lapping sheet is renewed automatically in response to the movement of the retainer from the operating position to the stand-by position. Also, a lapping control unit is provided for executing these operation steps automatically in accordance with a predetermined procedure.

REFERENCES:
patent: 3095674 (1963-07-01), Lee
patent: 3665650 (1972-05-01), Pryzgocki
patent: 3760537 (1973-09-01), Bovati

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