Charles L Nater

US Patent:

44397933, Mar 27, 1984

Filed:

Oct 22, 1981

Appl. No.:

6/313841

Inventors:

Charles Nater - Saratoga CA

Assignee:

Fuji Photo Film Co., Ltd. - Kanagawa

International Classification:

G11B 528
G11B 548

US Classification:

360121

Abstract:

A thin film head array has at least two stacks, each stack having a selected number of recording heads. The two stacks are joined such that the gaps in the heads of the first stack are interleaved with respect to the gaps in the heads of the second stack, and when such an array is used for recording and reproducing data on a magnetic medium, a plurality of recording tracks are provided. In a second embodiment, two assemblies, each having a plurality of stacks according to the first embodiment, are joined in a V-shape. Each gap in the heads of each stack occupies separate tracks on the recording medium and each recording gap has a magnetizing orientation that is 3. degree. -15. degree. with respect to that of the adjacent heads.

US Patent:

54384168, Aug 1, 1995

Filed:

Sep 20, 1993

Appl. No.:

8/124304

Inventors:

Charles Nater - Saratoga CA

International Classification:

G01B 1114
H01S 300

US Classification:

356373

Abstract:

A laser dual wavelength selection system having a resonant galvanometer drive system moving an intracavity reflector as part of a gain cavity and optical grating combination. Sensor 52 provides signals to drive control 54 which in combination with preprogrammed information is used to control the resonant galvanometer actuator in such a manner that sinusoidal operation will provide two at rest positions for every cycle. Laser pulse firing at these two selected times will provide two optimized selected wavelengths per cycle. Bias tuning is used to select adjacent wavelengths in a repetitive sequence.

US Patent:

44743424, Oct 2, 1984

Filed:

Jan 26, 1982

Appl. No.:

6/342962

Inventors:

Charles Nater - Saratoga CA

Assignee:

Fuji Photo Film Co., Ltd. - Kanagawa

International Classification:

B65H 1714
G11B 1526
G11B 2304

US Classification:

242192

Abstract:

A tape cartridge has a roller driven continuous belt which supports a wide thin tape when transported in the vicinity of video recording machine heads. A spring biased movable belt idler applies a predetermined amount of tension to the belt thus keeping the tension in the belt constant regardless of changes in temperature, humidity, etc. Since the belt both supports and supplies constant tension to the tape, tape bounce, tape breakage, tape stretch and tape wear are minimized and the manufacturing tolerances of the belt are significantly improved.