Abstract
An automatic adjustment system for VCR magnetic heads on a rotating cylinder unit has been newly developed. Magnetic head setting errors affect reconstructed image qualities. Extremely important head positioning errors are: 1) Setting angle error for two symmetrically positioned heads. 2) Rotational angle error for every individual head, in regard to a setting screw axis. 3) Distances head tips protrude from a cylinder edge. The pertinent technical features for the system are high speed and highly accurate image processing algorithms, to determine head positions using inter-ferometric head images and very precise mechanisms and algorithms to adjust head positions, even when head slipping and elastic deformations occur. Adjustment speed for the system is 30 sec/unit. One machine corresponds to three skilled operators in total productivity.
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