Method of positioning magnetic heads on a turntable
AssigneeSchlumberger Industries
InventorsRichard Juncker, Pierre Abeille
Life of this patent
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Abstract
A method for quickly and accurately positioning the rotary magnetic heads of a recorder/reader unit. The support for the magnetic heads includes a turntable and a countertable that are circular and that have a common axis of rotation, each including a peripheral support zone and a central support zone. The magnetic heads are situated around the periphery of the turntable. A screw enables the peripheral support zones to be brought into contact with each other and then the central support surfaces to be brought into contact with each other. The invention is applicable to recording and/or reading information on a magnetic tape.
Claims8
A method of positioning the rotary magnetic heads of a recorder/reader unit for magnetic tapes, the magnetic heads being fixed at the periphery of a rotary turntable which includes a central surface and a peripheral zone, said turntable being designed to be fixed to a countertable which also includes a central surface and a peripheral zone, the method comprising the following steps:
- a/ said turntable is machined so that said central surface is set back relative to a plane containing said peripheral zone and perpendicular to the axis of rotation of the rotary turntable;
- b/ the turntable is fixed on a standard countertable in a laboratory and the magnetic heads are positioned on the turntable;
- c/ the positioning of the magnetic heads is adjusted and the magnetic heads are fixed to the turntable;
- d/ the turntable is dismounted from the countertable;
- and
- e/ the turntable is mounted on the countertable of the recorder/reader unit by initially pressing said peripheral zones against each other and then pressing said central zones against each other.
Dependencies are inferred from the claim text.