DE1499615A1 - Tape feed device for magnetic recorders - Google Patents

Description

Our reference 0 2266

COMPAÖNIB DES GOMPESUES
3, Rue Dosne, Paris 16 ^e

Tape feed device for magazine recording

devices

The invention "bezietit see

for magnetic recording devices, especially for the Recording of numerical data are intended «

In the case of Mgnet recorders, in particular "at those intended for the recording of numerical data " Devices, the dust particles have a harmful effect on the tape out * because they call errors in the recording and playback.

Various measures have already been taken to eliminate the effect of these dust particles, such as cleaning brushes, suction devices, etc., which are generally in the area of the magnetic head assembly on the magnetic side

BATH ORIGINAL

1493615

sensitive layer of the tape are arranged. However stay then all .Stäü.b_ & eilchen, which during the operation of the device behind the dedusting point arise on the tape and are wound up when the tape is wound up the coils pressed between the windings. These dust particles can then between the windings for a remain pressed together for quite a long time so that they embed themselves in the magnetic oxide layer Re-recording or playback with this tape then makes it difficult to remove the embedded dust particles to remove without damaging the tape.

The object of the invention is to address this disadvantage by measure would take α to eliminate that at the moment of winding » enable the belt to be cleaned effectively.

there is also the usual recording devices always a compromise between the required Tape tension at the level of the head assembly to achieve the most efficient recording or reproduction possible and the tension with which the tape is wound onto the reels must be maintained, and di · not too low may be, so that «in the gliding of the windings on each other is avoided when starting or stopping the coils, which is regulated by the band reserve organs.

009823/1423

BATH ORIGINAL

" ³ " U.9 9615

The invention is therefore based on the task of this Compromise and eliminate these tensions independently close"

The tape feed device according to the invention contains in essentially reversible tape drive devices, two reels for picking up and discharging the tape and for each of the reels a ligament reserve organ, and it is characterized by this « that on the path of the tape between each reel and the associated tape reserve element, a dedusting device is provided, the vacuum of which is also used to generate an additional tape winding tension.

The vacuum dedusting device includes a first Dust extractor, which acts continuously on both sides of the belt, and a second suction extractor, which only opens one side of the tape acts and only works when the adjacent spool serves as a take-up spool «

Based on these measurements, the tape will be on both sides completely cleaned, so that «the first stated disadvantage is completely eliminated. During the short period of time that dae Belt needs to be evenly spaced between the dispensing spool and, to cover the head arrangement, can be more Put dust particles on the magnetic layer, but there their adhesive force is "or rather low, you can" before the Passing the JCöpten easily by an eear

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BADORiGlNAi,

. " ⁴ " 1493615

simple Heiuigu.ngsvorrich.tuag can be eliminated, for example «A felt or a small mushroom roll that turns and is cleaned with every rotation. Even with one fixed mushroom, there is no risk of it becoming unacceptably soiled because of the frictional force Between the felt and the magnetic layer, there may be very little peeling of embedded dust particles.

The second suction dust extractor, depending on the direction of feed of the belt is optionally activated, also enables the belt tension to be adjusted to a suitable value when being wound on the take-up spool without influencing the tension at the height of the head arrangement,

Ice's embodiment of the Erfiataiag is thematic shown in the drawing.

The drawing shows the magnetic tape 1, which is from a reel to be moved to a spool 4 or vice versa by drive devices not shown. The coils 5 and alternately deliver tape to their associated tape reserve organs 11 fessw. 12 in at. known white with the help of Iiü.l8t * sid »* bt & et« rn oil · Aatriefeiteotorea for the coils rules »feeiepieXsweiee with the help of an aechaaiechen, pneuaatiso & en or other similar cone arrangements.

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The magnetic head assembly 2 and the associated dust extractor 19, for example a fungus, are on the path of the tape on the side of the magnetic layer between, the tape reserve organs 11 and 12 arranged.

A vacuum dedusting device is located between the spool 3 and the associated band reserve element. The "one feil is a suction device 5, which has a very hard and wear-resistant (for example hard chrome-plated) surface on the side in contact with the belt" where the mutually staggered openings are attached negative pressure source stehea in connection. Thus, it is possible to exert a dedusting effect and a frictional force u £ belt, preferably on the side äse which may control one of these effects in dependence vois d © s vacuum. the other part is taroh cleaning members 7 and 9 formed, - for example, rotating felts or hangings, which are arranged opposite each other on both sides of the belt inside of two anaogdüeen 13 w® & 15.

A similar arrangement with corresponding cables S ₉ S ₈ 10, 14, 16 is arranged between the coil 4 and the B »ßÄ2es @ rv @ organ 12 ,,.

The suction device 5 is put into action, when the spool 3 serves as a take-up spool, i.e. itself in. The direction indicated by the arrow 17 rotates. This is done, for example, by an electromagnetic controlled valve, which is actuated depending on your direction of rotation of the coil 3 and the suction device with the vacuum source. connects “Simultaneously with the Suction of the dust particles from the carrier side of the belt the suction device 5 increases the belt tension as a result the resulting friction on the back of the belt, which makes it possible to achieve the desired winding tension for to achieve the winding on the spool 3.

The organs 7 and 9 continuously clean the belt on both sides, regardless of its direction of movement, and the dust particles removed by the nozzle are constantly being sown by the nozzle. 13 and 15 sucked off.

In the same way, the suction device 6 is activated when the bobbin 4 is used as a take-up bobbin and the bieatuag of the arrow 18 rotates, while the Msea 14 and 16 constantly suck up Si® dust particles that pass through the organs 8 and 10 voa des Tape to be removed «

Godfather nta naprüohe

BATH ORIGINAL

003323/1423

Claims (2)

Έ a t e η t a n a p r ü c h e Belt feed device for magnetic storage devices with reversible tape drive devices, two reels for dispensing or winding up the tape and two banar reorganisms, each assigned to one of the coils are, characterized in that on the path of the tape between; each reel and the associated Band reserve organ arranged a dedusting device is whose negative pressure is at the same time to the Irsaugung a additional tape winding tension used 2. Bandvorschubeinricfet'x ^ aaea claim 1, taäurch marked that the a first deduster · α1 & £ 3.ϋ ₉ 4®r QamM »Bf acts on both sides of the tape ^» Et © issa suction deduster, which acts only on one side of the sand and is only in operation then, iseas äiM li ^ eaehfearfce Coil serves as a take-up pulley. BADORiGlNAU Lee on the side