WORK ROTATION DRIVE UNIT AND EXPOSURE DEVICE FOR OPTICAL DISK MASTER DISK

PROBLEM TO BE SOLVED: To remove a work from a turntable and to efficiently execute stable drawing processing of an optical disk master disk without losing the weight balance of the turntable, without adding any redundant mounting arm and without interfering with a clamp pin. SOLUTION: A work rotatio...

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Bibliographische Detailangaben
1. Verfasser:	MURAYAMA NOBORU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MATERIALS THEREFOR ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To remove a work from a turntable and to efficiently execute stable drawing processing of an optical disk master disk without losing the weight balance of the turntable, without adding any redundant mounting arm and without interfering with a clamp pin. SOLUTION: A work rotation drive unit of this invention includes the turntable which is rotated while a work is mounted thereon, a spindle shaft which is rotatably supported via a spindle housing and has one end fixed to the turntable, a motor for rotary-driving the spindle shaft, a clamping means for positioning and holding the work in the turntable, and a work transfer means which is disposed on the rotary axis of the turntable, the spindle shaft and the motor, and vertically moved up and down with respect to the turntable to remove the work from the turntable. COPYRIGHT: (C)2007,JPO&INPIT