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Topic: Tape Head

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	Bottlehead Tube Tape Head Preamp
		The head is a two channel quarter track head on a shifting mount that allows play of both half track and quarter track two channel tapes at 7.5 ips and 3.75 ips.
		The tape head preamp was constructed from a Bottlehead Seduction phono preamplifier kit, with minor modifications to the circuit to convert the stock passive RIAA equalization network to a passive NAB 1/4" 7.5/15ips equalization network.
		The wires leading from the 2-track/4-track playback head selector switch to the multi-pin plug that attaches the headstack to the chassis wiring harness were detached, and the fine coax wires were soldered to the selector switch contacts in their place.
	www.bottlehead.com /et/adobespc/Seduction/bottleheadtapeheadpreamp.htm (3591 words)

	Magnetic Tape Recording
		Tape heads are made from rings of ferromagnetic material with a gap where the tape contacts it so the magnetic field can fringe out to magnetize the emulsion on the tape.
		For stereo cassette tape heads, there are two such mechanisms to record and playback from parallel tracks on the tape.
		The recording medium for the tape recording process is typically made by embedding tiny magnetic oxide particles in a plastic binder on a polyester film tape.
	hyperphysics.phy-astr.gsu.edu /hbase/audio/tape2.html (338 words)

	Talke Lab Head/Tape Interface Research
		The actual contact of the head and the tape is controlled by the behavior of surface asperities on the tape, which maintain a mean separation of the head and tape on the microscopic level even when the two are nominally in contact.
		Glass heads with different island widths and zero and nine-degree skew angles were used to investigate the effect of head contour on the head/tape spacing.
		Tape edge force is measured at the tape guiding position using a force-calibrated cantilever spring and a linear optical probe.
	talkelab.ucsd.edu /head-tape (1070 words)

	Tape head - Wikipedia, the free encyclopedia
		A tape head is a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa.
		The electromagnetic arrangement of a tape head is generally similar for all types, though the physical design varies considerably depending on the application - for example video recorders use rotating heads which implement a helical scan, whereas most audio recorders have fixed heads.
		The disadvantage of this approach is that the head must be held away from the tape when it is not required, and the tape ends up with a lot of random noise on it.
	en.wikipedia.org /wiki/Tape_head (763 words)

	Tape recorder - Wikipedia, the free encyclopedia
		Current flowing in the coils of the electromagnet causes the magnetic material on the tape to align in a manner proportional to the original signal.
		The signal can be reproduced by running the tape back across the tape head, where the reverse process occurs - the magnetic imprint on the tape induces a small current in the read head which approximates the original signal.
		Many tape recorders are capable of recording and playing back at once by means of separate record and playback heads in line or combined in one unit.
	en.wikipedia.org /wiki/Tape_recorder (679 words)

	Compact Cassette - Wikipedia, the free encyclopedia
		Although there were other magnetic tape cartridge systems at the time, the Compact Cassette became dominant as a result of Philips' decision (in the face of pressure from Sony) to license the format free of charge.
		C180 and even C240 tapes were available at one time, but these were extremely thin and fragile and suffered badly from effects such as print-through which made them unsuitable for general use.
		Cassettes were also a boon to people wishing to tape concerts (unauthorized or authorized) for sale or trade, a practice tacitly or overtly encouraged by many bands with a more counterculture bent such as the Grateful Dead.
	en.wikipedia.org /wiki/Compact_audio_cassette (3107 words)

	JRF Magnetic Sciences: Tape Heads-An Introduction
		Erase heads, and an overwhelming majority of high-speed tape duplicator heads, are manufactured of various formulations of a ferrite material, often referred to as glass heads (diagram B).
		In practical theory, magnetic heads with edge relief slots are far less susceptible to uneven edge wear problems caused by variations in tape widths and the razor sharp edges generated in the tape slitting processes.
		Head manufacturing is a complex balance of machining delicate materials while keeping the alteration of their electrical properties to a minimum.
	www.jrfmagnetics.com /tapeheadintro.html (2519 words)

	Hard-disk-drive technology flat heads for linear tape recording
		The method devised to set wrap angle on the outside edges of the head [18] is based on a surprising characteristic of the tape foil bearing—the transition from the skiving and tacked-down state to the flying state is abrupt.
		Head processing procedures that minimize susceptibility to the formation of parasitic electrical contacts between the MR leads and S2 shields are employed (see, for example, [21]).
		IBM tape heads employ a novel potential clamp which, for LTO heads, is a center-tapped thin-film serpentine tantalum resistor, the ends of which are electrically connected to the MR leads [23, 24].
	www.research.ibm.com /journal/rd/474/biskeborn.html (5993 words)

	IBM Research \| Almaden Research Center \| Science and Technology \| Data Storage \| Magnetic Materials and Phenomena \| ... (Site not responding. Last check: )
		Conventional tape recording heads have a cylindrically contoured surface with air bleed slots to remove air from the self-acting air bearing that develops when tape is pulled over a cylinder.
		High-end tape systems require an ability to read/verify immediately after writing and are usually implemented in a two-module “dual bump” head (Figure 2).The throat height of the recording head is determined by the cylindrical contour, which requires modules to be finished singly or no more than a few at a time.
		As the tape passes from left to right, air is skived off the head's surface on the left edge of each module.
	www.almaden.ibm.com /st/data_storage/mmp/tape/head (463 words)

	Analog Tape
		In addition, audio recorded on paper tape was typically not recorded to the edges of the tape, and so it is often described as "center track," although the term has nothing to do with the modern center track time code format.
		Acetate tape in an advanced state of decomposition can be curled so badly that it will jump out of the tape guides entirely; but one of the features of acetate tape is that it breaks cleanly and does not deform readily, so tape tension can be made quite high without stretching the tape.
		Tape speed for professional applications is normally 7.5, 15 or 30 ips, although tapes are also recorded at 15/16, 1-7/8 and 3.75 ips.
	www.masterdigital.com /24bit/analogtape.htm (1993 words)

	Cassette Tape Head
		If a sine wave sweep (from 20-20,000hertz) is accurately recorded onto a cassette tape (the magnetic density is equal throughout the sweep), the audio head would not be able to accurately reproduce the correct voltage level across the sweep of frequencies (especially at the lower frequencies).
		When there is a spring under the head, the mounting screws will also be used to align the tape head azimuth.
		Many car tape transports are made of stamped steel parts which may have a significant amount of variation from one piece to another.
	www.bcae1.com /tapehead.htm (442 words)

	Manley_All_Tube_Tape_Head_Preamplifier
		The Manley Tape Head Preamps, being dual-chassis units, image superbly with incredible soundstage, depth, and fidelity to the original master tape.
		We have also had fantastic results with higher inductance 500mH heads supplied by JRF Magnetics.
		Two mono channels of Manley Tape Head Preamps come with a dedicated separate completely dual mono power supply.
	www.manleylabs.com /containerpages/tapehead99.html (495 words)

	Amazon.com: Tape Head: Music: King's X (Site not responding. Last check: )
		Tape Head, the first King's X release on Metal Blade, was produced entirely by the band itself, leaving them free to explore music as they pleased.
		King's X's seventh album, Tape Head, was released in 1998, and would be their first to appear on the Metal Blade label.
		Tape Head is the final (so far) great album from King's X. The start of making more simple songs and also the start of more personal lyrics.
	www.amazon.com /Tape-Head-Kings-X/dp/B00000DBZH (1359 words)

	DAT and MDM Maintenance
		Tape tension is more often a problem, and usually only in new machines.
		A dry cleaning tape works by scraping the head drum to remove dust and dirt, trapping it in the tape fibers.
		Since the tape guides are slotted, you can turn them with a small screwdriver to change to path of the tape relative to the heads.
	www.tape.com /techinfo/maintain.html (1667 words)

	Sports Scenes of the World (Site not responding. Last check: )
		He made the head, legs, and part of the body.
		Tape art was pretty hard especially when we had to curve the tape.
		When you were working on the tape art it was life sized.
	tapeart.com /blue/1998/edu-peaslee/images-peaslee/peaslee-sports.htm (826 words)

	JRF Magnetic Sciences: Taking a Head Trip
		Tape path cleanliness can also be a factor because grit and grunge caught between tape and heads will not only degrade immediate performance, but also increase the rate of wear.
		Because the inductance of a magnetic head drops predictably as it wears, by comparing the head under test to wearout specifications on file for the exact head type, it is possible to estimate remaining head life with fair accuracy, even when actual tip depth measurements are not possible.
		If heads on are on the "hairy edge" of wearing through, but the studio simply cannot afford new heads, we may reluctantly go ahead and relap, though in such cases we cannot guarantee remaining head life.
	www.jrfmagnetics.com /headtrip.html (2864 words)

	Head Protection Tape - Weight - Talk Tennis
		Two layers of head tape from 3 to 9 would weigh around 5 grams +/- 1 gram depending on the width being used.
		Another important impact to the racquet to consider is the change in the balance point I am surprised how much the head tape and overgrip influence the balance of the racquet.
		It's not as resistant to the expensive head tape, but at less than $2, it's not a big deal to re-tape it.
	tt.tennis-warehouse.com /showthread.php?t=32507 (198 words)

	Reel to Reel Tape Recorder Head Cleaning (Site not responding. Last check: )
		The advantage of having three heads is that you can listen to what you have recorded a fraction of a second later, confirming that no quality has been lost.
		The capstan is a motor driven metal shaft which drives the tape through the machine at a constant speed by means of the rubber pinch roller which presses up to grip the tape and so pull it past the heads.
		If the quality starts to be impaired again, especially when using old tapes, you will have to consider restoring your tapes and copying them to CD or some other modern format for the future.
	www.taperecorder.co.uk /cleaning.htm (922 words)

	Become.com - Shop results for tape head
		HP tape cartridges are continuously tested and monitored to deliver the highest quality and reliability to the market.
		Measure baby's head circumference in inches or centimeters with seca's durable, non-stretch teflon tape.
		Tape Head Kleen Pad Individually Sealed Pads 80Box
	www.become.com /shop?q=tape+head (271 words)

	AIT Technology: Frequently Asked Questions
		Unlike conventional tape drives that must rewind to the beginning of the tape to read the system log and find the desired file, the MIC chip provides sophisticated data access, decreasing file access times up to 50 percent.
		To ensure the tape is held firmly against the head assembly, tape tension must be enough to produce accurate read-write responses yet minimize head wear and buildup from tape debris.
		Sony AIT drives feature a Metal-In-Gap (MIG) tape head with a unique geometry enabling it to maintain up to 50% less tape tension than that of competing technologies, resulting in a head life of 50,000 hours and industry-leading reliability.
	www.tapelibrary.com /aitfaq.html (697 words)

	Tape
		have heads that write bit streams that are parallel to the edge of the tape.
		are longitudinal that write the full length of the tape, then turn around and write the length of the tape in the opposite direction with the heads in a slightly different position.
		If I need to access a file at the end of the "logical tape" and the drive knows that it is at the beginning of the 52th track it goes directly to the 52th track and start seeking on it.
	alumnus.caltech.edu /~rdv/comp-arch-storage/FAQ-1.5.html (3111 words)

	Tape Resources - MINI DV vs DVCAM, Tape Cleaner, DV Head Cleaning, Care and Handling
		If a tape with uneven winding and “slipped” sections (commonly referred to as “blocking”) is left in storage for long periods, uneven stretching of the tape will occur.
		If tapes are left out of their cases and stacked one on top of another, the collective weight could cause distortion as well as potential breakage of the cassettes.
		As video tape incorporates a thin plastic base film, irreparable wrinkles and scratches may be incurred when playing the tape on a VTR with a faulty tape transport mechanism or tape path.
	www.taperesources.com /useful_info.html (3552 words)

	LAST Factory - Tape Care
		Typically, tapes are exposed to changes of temperature that cause the tapes to expand and contract.
		In addition, tape wear caused by misalignment of guides and heads in the tape transport further contribute to tape deterioration.
		As tape ages, in addition to absorbing moisture, it looses internal lubricants.
	www.lastfactory.com /tape_care.html (539 words)

	Tapeserv (Site not responding. Last check: )
		In addition, Sony's unique tape tension control system senses and controls tension fluctuations to reduce tape and head wear, and maintains tape tension at less than one-half that of competing technologies.
		To reduce contamination from airborne dust and particles-a leading cause of failure in conventional tape drives-a special cooling path redirects airflow under the AIT drive, away from the drive's read/write mechanisms.
		The Active Head Cleaner is a built-in, head cleaning mechanism that is activated when soft errors (ECC, rereads, rewrites) reach a certain threshold.
	www.tapeserv.com /tapetech/8mm.htm (694 words)

	Head-Cleaners Hypnosis CDs and Tapes for Confidence, Performance, Relaxation, Hopefulness,Control
		presented in an office setting, as opposed to via recorded CD or tape, affords the hypnotherapist the opportunity to closely monitor the reaction of the listener so that wording can be finely tuned to changes that occur from moment to moment.
		However, recorded hypnosis, presented on tape cassette or CD and listened to through headphones, as opposed to hypnotic procedures performed in a doctor's office, has a wide range of very helpful advantages.
		And then the recording can be shelved so that it is available to be used again and again if and when issues, anxiousness or stresses recur again over the years.
	www.head-cleaners.com (1097 words)

	Head and Tape Path Cleaning
		They further recommend that the tapes not be rewound and reused after the first pass, as is suggested by their directions.
		With the door left open (I have to say that...), gently blow the interior of the tape compartment with compressed air until you are satisfied all loose dust and oxide particles have been removed.
		The capstan is a rotating shaft that is responsible for tape tension, or the speed at which the tape runs The pinch roller is a small, fl rubber wheel that presses the tape against the capstan.
	www.bealecorner.com /trv900/trouble/headclean.html (1742 words)

	tape head - OneLook Dictionary Search
		We found 3 dictionaries with English definitions that include the word tape head:
		Tip: Click on the first link on a line below to go directly to a page where "tape head" is defined.
		tape head : Free On-line Dictionary of Computing [home, info]
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=tape+head (81 words)

	DreamHaven Books, Comics and Art
		VG+; tiny pieces of white tape at head and heel.
		VG+; small pieces of brown tape at head and heel; light spine wear; some chipping to interior page corners.
		VG; tiny pieces of brown tape at head and heel; tiny corner fold and chip at lower right edge.
	www.dreamhavenbooks.com /pulps.php (222 words)

	Magnetic Tape Care -- LAST Tape Head Treatment
		Tape motion is noticeably smoother, resulting in a measurable reduction in I.M. distortion.
		Frequency response is improved and dropouts are greatly reduced when tape heads and guides are treated with LAST Tape Head Treatment.
		LAST Tape Head Treatment clings to the surface of heads and guides with incredible tenacity.
	www.lastfactory.com /Products/tape_head_treatment.html (261 words)

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