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7355820 |
Head drum assembly for tape recorder and method of assembling the same
A head drum assembly for a tape recorder maintains a substantially constant preload and reduces manufacturing costs. The head drum assembly includes a shaft fixed to a center of a stationary drum,...
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7256964 |
Magnetic tape apparatus including a circumferential surface having a generally flat portion between peak portions and method for producing the same
To lower the coefficient of static friction of the circumferential surface of the guide or drum constituting the magnetic tape apparatus. A flat portion is formed between peak portions. The peak...
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6922315 |
Head drum with magnetic mounting of rotary transformer
According to a first aspect the present invention is related to a head drum arrangement allowing a much easier mounting of the rotary transformer. The head drum arrangement comprises a non-rotating...
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6822820 |
Apparatus for detecting damage to the transducer head and/or tape guide of an interactive media device
A data tape drive for recording information on the data tape of a tape cartridge has a transducer head with air bleed slots that define side walls, a tape guide, and a device for detecting damage...
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6819529 |
Head drum device with carbon-containing synthetic resin upper drum and larger diameter intermediate drum
A head drum device of the present invention prevents a magnetic tape (2) from clinging to the head drum device (3) due to electrostatic charge by using a carbon-containing synthetic resin as the...
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6751057 |
Magnetic recording/reproducing apparatus and rotary head drum device
A guide plate is provided along the respective outer periphery of rotary and fixed drums on the upstream side relative to an inlet portion where a magnetic tape starts making contact with a...
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6590741 |
Magnetic head having grooves to enhance contact with magnetic recording media and magnetic recording/reproducing apparatus
A magnetic head for attachment to a drum includes two magnetic cores butted against each other, and a gap is formed therebetween. A glass is bonded to the upper butted portion. A winding is...
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6452744 |
Magnetic record/playback apparatus
A magnetic record/playback apparatus for continuously recording at least two tracks of data conforming to a digital recording format applied to a first magnetic tape having a first tape width onto...
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6411465 |
Rotary head drum assembly with upper, lower and inner drums with cylindrical surfaces of differing outward radial position
A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum (12) in a range of winding of a tape (31) at an inner side relative to the...
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6151191 |
Helical scan recording with a self-acting negative air bearing
A flat head and a tape transport arrangement impart a wrap angle to the tape at the upstream corner of the head. The wrap angle, corner sharpness and tape stiffness are sufficient to cause a moving...
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6115218 |
Tape support system for arcuate scan rotating head
The present invention relates to a method and apparatus for engaging a magnetic tape with a transducer at a read/write zone for achieving consistent head-to-tape coupling throughout the intended...
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6108165 |
Rotary drum equipment and recording/reproducing equipment using the same
An arrangement is designed to achieve satisfactory tape contact by setting a specific ratio for the width of a drum window and the head length of a double azimuth head. The head length L is defined...
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6078464 |
Drum base on which a drum of a magnetic tape recorder is mounted
A drum base according to he invention, on which a drum of a magnetic tape recorder is mounted, comprises a substantially annular frame having a fixing surface to which the drum is fixed; at least...
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6015627 |
Magnetic head drum and method of manufacturing same
A head drum for supporting a magnetic head for magnetically recording information on and reproducing information from a magnetic tape includes an inner body of an aluminum alloy, and a...
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5999381 |
Head drum assembly with vibration absorbing element
A head drum assembly for a tape recorder includes a stationary drum, a rotary drum, a magnetic head installed in the rotary drum for scanning a traveling magnetic tape, and at least one vibration...
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5982590 |
Magnetic recording/reproducing apparatus with tilting head drum for dynamic tracking
A magnetic recording and reproducing apparatus includes a tape guide drum (10) composed of a lower stationary drum (10A) supported integrally with a drum shaft (18) and an upper rotary drum (10B),...
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5969909 |
Print motor assembly for use in a magnetic recording/reproducing apparatus
A head drum assembly for use in a magnetic recording/reproducing apparatus includes a rotary shaft, a head drum secured to the rotary shaft via a bearing, a bushing fitted around the rotary shaft,...
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5883769 |
Aluminum head drum with a protective layer which smoothly and continuously varies in hardness for use in a videocassette recorder
An aluminum head drum for use in a video cassette recorder is coated with a protective layer comprising diamond-like carbon. The protective layer of diamond-like carbon is obtained using a...
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5838520 |
Magnetic recording/reproducing apparatus with tilting head drum for dynamic tracking
Magnetic recording/reproducing apparatus has a lower drum, an upper drum equipped with a rotary magnetic head and being coaxially and rotatably supported by the lower drum, a first tilt driving...
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5798894 |
Rotary head type magnetic recording reproducing apparatus
A shaft is fixed on a fixed drum, and a rotary drum is supported rotatably on the shaft. Parallel plate springs are supported by the rotary drum, and at movable portions of the plate springs, a...
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5793575 |
Rotary transformer for a video cassette recorder having a stator and a rotor equipped with coils
A rotary of a head drum assembly for a VCT in which the structure thereof is simple, thereby facilitating the manufacture thereof, and which can prevent cross-talk of the video signals by forming...
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5786959 |
Recording and/or reproducing apparatus with rotary drum unit
An apparatus for recording and/or reproducing information on or from a tape includes a rotary drum unit having a rotary drum which has at least one head and a fixed drum which is arranged to...
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5768046 |
VCR head drum coated with diamond-like hard carbon films and the method and apparatus for manufacturing the same
A head drum is coated with double films, each having different characteristics, by forming a first diamond-like hard carbon film of high degree of hardness and then forming a second diamond-like...
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5764442 |
Rotary head drum with shielding of heads and rotary transformers
A rotary cylinder device has a stationary cylinder with a stationary shaft; a rotary cylinder rotatably mounted on the stationary shaft, the rotary cylinder having an opening on one side thereof...
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5761788 |
Method for making a magnetic head drum for a magnetic recording apparatus
A magnetic head drum for a magnetic recording apparatus comprising a metallic ring of a predetermined thickness, and a support body of a plastic material formed in said metallic ring through an...
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5734529 |
Head drum assembly for use in a video cassette recorder
A head drum assembly for use in a video cassette recorder comprises a rotary shaft, a flange, a plurality of the heads, a rotary drum, and signal transmitting means, wherein the signal transmitting...
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5729395 |
Video tape recorder with liquid crystal display projector having a head drum with fins
A Video Tape Recorder (VTR) with a liquid crystal display (LCD) projector free from a radiating blower is disclosed. The VTR with LCD projector includes a plurality of fins positioned on a top...
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5724215 |
Rotary transformer arrangement for a magnetic tape system drum assembly
A drum assembly for a magnetic tape reading and writing system, comprises: a static drum; a rotary spindle coaxial with the static drum and connected to a drive motor; a rotary drum mounted on the...
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5682283 |
Rotary head apparatus having short distance between magnetic heads and rotary transformer
A rotary head apparatus including a circuit board with an optimum and shortest distance between magnetic heads of the rotary head apparatus and a rotary transformer thereof. The members used in the...
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5675458 |
Magnetic recording/reproducing apparatus with independently tiltable head drum and tape lead guide
The present invention relates to a magnetic recording/reproducing apparatus capable of performing a fast forward reproduction, a fast backward reproduction, a still picture reproduction and the...
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5666245 |
Head drum assembly provided with an amplifier therein
A head drum assembly for use in a video cassette recorder ("VCR") includes a rotary drum, a stationary drum, a rotary transformer including a rotor and a stator transformers, and an amplifier. The...
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5661622 |
Rotary magnetic head cylinder device for reduced vibration and proper head/type alignment
A rotary magnetic recording and reproducing apparatus includes a stationary cylinder formed on a lower portion of an outer peripheral surface thereof with a guide lead for guiding a lower edge of a...
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5627705 |
Recording and/or reproducing apparatus having rotary drum unit
A recording and/or reproducing apparatus for recording and/or reproducing information on or from a tape-shaped recording medium includes a head arranged to record and/or reproduce information on or...
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5602702 |
Magnetic recording/reproducing apparatus having an offset head chip
A magnetic recording/reproducing apparatus according to the present invention includes: a fixed cylinder; a rotary cylinder rotatably supported by the fixed cylinder, the rotary cylinder including...
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5581426 |
Upper head drum assembly including at least one nut cap
An upper drum assembly for use in a video cassette recorder includes an upper drum having an inner part with a top surface and an outer side surface with one or more head windows, the inner part...
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5563755 |
Reduced friction tape contact surface for tape recording and reproducing apparatus
An apparatus for recording and reproducing a tape-shaped recording medium, which is capable of minimizing the effect of adsorbed water present at the interface between the tape and a sliding member...
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5535070 |
Magnetic recording/reproducing apparatus including windbreak members for preventing air flow between head drum and tape
A magnetic recording/reproducing apparatus comprises windbreak members between a rotary head drum and a guide mechanism so as to prevent airflow between the head drum and the tape. Such a magnetic...
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5528438 |
Drum assembly having a lower fixed drum and an upper rotary drum with a particularly shaped outer surface
A rotary bead-drum assembly for use in a video tape recorder that makes high-density recording. The assembly comprises a rotating top drum and a stationary bottom drum. Magnetic tape is helically...
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5526207 |
Rotary head cylinder having a fixed cylinder projection generating a lifting force at a lower edge of a tape on the cylinder to increase an upper edge restricting force
A rotary head cylinder of a rotary head assembly includes a first projection for reducing jitter. The first projection is smoothly formed in the vicinity of a point where a tape is separated from a...
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5510168 |
Magnetic recording medium and magnetic recording method
A magnetic recording medium comprises a support and provided thereon, a magnetic recording component layer which comprises an uppermost layer containing a ferromagnetic metal powder and a binder, a...
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5508945 |
Levitation phenomenon analyzer and magnetic recording apparatus including levitation phenomenon analyzer
A levitation phenomenon analyzer includes: a data input portion for reading data on fluid and structural components and minute structures of a device; a levitation analysis portion for solving...
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5504642 |
Magnetic recording/reproducing apparatus having a locus plane of rotary heads tiltable with respect to a lower drum
The present invention relates to a magnetic recording/reproducing apparatus capable of performing a fast forward reproduction, a fast backward reproduction, a still picture reproduction and the...
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5502607 |
Recording or reproducing apparatus
A recording or reproducing apparatus has a rotary head drum which is composed of a rotary drum with magnetic heads mounted on the outer periphery thereof and a stationary drum. It records a signal...
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5459625 |
Rotary head drum device
In a rotary head drum device for use in a video tape recorder or the like, a motor is provided between a rotating drum and a fixed drum. A drum base has at least three supporting surfaces for...
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5452169 |
Variable bulge device for rotatable head drum
A variable bulge device for displacing bulges of a rotation head drum, capable of adjusting a protruded amount of a bulge used, depending on a rotation speed of the rotating head drum and the kind...
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5448439 |
Rotary head and cylindrical drum tape guide assembly for tape record and reproduce apparatus
A rotary head helical scan tape record and/or reproduce apparatus has an upper rotatable cylindrical drum tape guide section and a stationary lower cylindrical drum tape guide section that includes...
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5438468 |
Rotary head drum having reduced exterior dimensions
An rotary drum head for recording and/or reproducing a signal on slanted tracks formed on a magnetic tape. A chassis is provided with a rotary head drum unit having a lower stationary drum mounted...
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5434735 |
Recording/playback apparatus for controlling contact between a head and a magnetic tape by controlled spouting of air in the vicinity of the head
A recording/playback apparatus including a stationary drum on which a traveling magnetic tape is wound, a plurality of magnetic heads for recording and playing back data, a rotary portion which is...
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5392180 |
Magnetic head drum for video data recording and reading apparatus
A magnetic head drum of a helical-scan type for a data record/read apparatus comprises upper and lower stationary drums securely mounted on a stationary spindle, a rotary drum rotatably supported...
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5363263 |
Coil assembly for rotary magnetic head apparatus
A rotary magnetic head apparatus comprises a transformer core, including a rotor core and a stator core, a rotary drum, a stationary drum, and magnetic heads provided in the outer peripheral...
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