DE2010966C - Device for reducing the wear and tear and damage of recording media tapes - Google Patents

Description

3 ⁴ in

Abrasion of a tape point in the reel fesigchalle reinforcement strips through the adhesive layer m

"Em tape is prevented; an increase in the stabilization alignment is maintained. Preferably dab «α- '

The quality or tear resistance of the tape, on the other hand, is at a distance between the common ^uurc "ss

These known means are not possible. "Urn the hole and one end of the tape large oaergic.

Resistance of the tape to the length of the tape between the fastening

drove varied and high mechanical stress on the tape end on the reel and a toll

To increase chunoen, one can, as is well known, “euernaen the directed light beam of the sound wave

Carrier tape thicker or made of high quality light detector. Preferably Au ^s fuhrungsfonn "t

manufacture renf material. In the first mentioned the width of the reinforcement strip JW "

However, the case increases the winding volume equal to that of the magnetic tape unaerw

speaking, while in the latter case the makers of the common _D ^Dur _t ^ch <£ " ^s rrLärkun <> s-

JU costs considerably more than half the width of the reinforcement for each individual band

"To be rößert. Gripping and that of the magnetic tape

* The invention is therefore based on the structure, in the following the training una u ^

to specify a device which the recording 15 drive mode of the subject of the invention ^

now ^ irägerband especially with regard to the execution shown in the drawing,

The stresses caused by the belt drive> pw.ls explained in more detail. In the ^ ^cnnu "& ™ *> ,

Makes κ-. ', -stable, without the one from Fig. 1 a perspective: ie representation <* e.

V -drawing carrier certain winding volumes per rope of a tape cassette with inserted ■ » ^a . _{B d} .

B- 'to increase the unit of length or an over- * o Fi e. 2 is a top view of the closed.

Length g g

dv.- average quality d recording medium cassette. _ rianrikassette mn

eΜ. Hard to do. When solving this Auf- Fig.? a front view of the B ™ ^dka ** "J _nd

^. genuinely the invention of knowledge. that the * ^ ™^ ^ f ^ nni-

_d i, signs of wear and tear of in the prax.s a F, g.4 an enlarged representation of the in ^ new ^

^ ₁ -, / th magnetic sound tapes on very specific ^ ₅ ger way formed ^ba " ^de ? ' ° " _{(hen De} .

t- ^ n occur preferentially, namely where the tape drive device and an optical υ

Ba ^ d when the end of the tape is reached between the detector to determine the end of the tape

, Γκ-swelle and the associated pressure element to In Fig. 1 is a magnetic tape 14 g «« - V · "', _e

ϋ ,,, η is coming. At this point the isr tin - f

Note shafts driven mass-afflicted or- 30 11 and a coil 12 are on the ^ «^«

In particular, the tape is arranged both when hooking 10, and the magnetic tape 14 is on

^e as. also when starting again in the opposite direction, the coil 11 and \ 1 are fixed. The coil ^ «» »£

_m -, strongly negative or positively accelerated - earth. take spool and the spool « ^a ^ ' ^e " ^e J ",, ^g _{12 abEC} .

-e shown in the area of the front and end sections. Is the tape of the ^Ah 8 ^ ^es P ^u ^

id ttls one, ubl .nen

I) u -e im Dereicii uci vuiuci- vi ». uiiutn '^ iiu »^ g ^ ... ^. · ■ » . _{-JUi 1} Ap _n Locking device ¹ -

dei magnetic recording tapes lying positions are therefore wrapped in 35 as it is by means of a, uW ..nen ^ umer-leichlich more liable to wear un- 13 to the coil 12, ^"t g ^ehalte" _pn ^Au _'a *' £ _{Ma (n} etterwo'rfen on the g according to F i than the other Bandab.chni.te.. 1 "t not to see that the Ma abrasion of the capstan usually only with either tape 14 in the same way ^ ^a ^ _u ^ _{{mach B} U ichmäßiger drive speed or fixed with STE, st A «* ^ I.che Kasseneaausf uhru μ ϊ ,, - cr speed change acts 4 ° requires that the tape ANM ^ P.

- Based on a device that is stated at the beginning, since the B "* ^a ^ * ^ S '4 d U er *, · open type,., The invention proposes to solve it ^ n" - If that Magg *? ^Nd ^.

; .r task. ^{that a reinforcing strip} or not on the reels """£ l2 £ ^ _{tape and} -l. _{! pP} en spans the section of the tape, ^slande , .d · = danger that« n users α _hädj .

which when the tape comes to a standstill by reaching 45 or the cassette is damaged E ne so. ¹ ^ B between the drive shaft and the supply ergabe.sjch danj «enn d ^ r B« iutK ^r _u

The outer pressure element comes to rest and opening the cassette is a _mess . connecting the reinforcement strip to the tape at one of the spools 11 or λ. . ^

Adhesive layer in an area of this section The magnetic tape 14 ^ runs ^ 'de ^ pu ^

is interrupted. Since the inventively met- So guide 19 via guide pin ^ «u. NEN measures the stability and tear resistance ge cine Unwenkfuhnmg 1 »r .puU"; J ,, ..

increase rade in that band section which in kungsstre.fen 15 (Fig. A) K t am ^ ^a | ⁿ _,,

practice strengthens the highest far as mechanical and facing _w, e .st exposed to the Magnewa stresses, the life öffnunp to 17, ^^^^^ "To voreeschenedauer of the recording carrier tape are positioned substantially 55 imk as * ^ ^cn ^ _{riffstcllen for di} , increased without increasing the winding volume per tape length hole punch 16 and M bi the d. ^ Durchgni si unit or the special quality of the Tonwdk » _; Fur ^ Ve-en dung ^ ^^ P ^ recording medium with increasing berti-

_{known per se} Auf- ao Spu £ u SJf

nat.ve fr ^ ompensanon fu-das t en

bh I ^: htdtktor is scannable is connected as cndedetektors, bs gic ^ ¹ ^ J -

-that

nat.ve fr ^ omp _dc

attached I ^: chtdetektor is scannable, is connected as cndedetektors, bs gic ^ ¹ ^ J - _h ⁶ _un; A further development of the invention proposed that the _{light-permeable area of the 6 5} embodiment, orm «n · von Ka ^ eI« JJ AJ, a through hole in the Wjeto ^ beemtetten. & n: Form * ™ _{for &} .

magnetic tape overlapped by the reinforcement strip- ^ f * '^^ _even if the

section is that with a corresponding hole in the middle of the Banüenaes,

Tape supply in the supply reel is exhausted, the cassette tape drive continues to work. Hereinafter will briefly refer to FIG. 2, 3 and 4, in which it is shown that a capstan SO is passed through the Cassette parts 10 and 30 is carried out at the holes or openings 31 and 16, which act as a drive for the magnetic tape 14 is used. A pressure roller 51 is biased against the capstan 50, and the magnetic tape 14 runs under the pressure of the pressure

The type of connection of the reinforcement strip 15 to the magnetic tape 14 and the arrangement the opening 17 for the optical beam path of the detector device can best be seen from FIG. 4th recognize. The thicknesses of the magnetic tape 14 and of the reinforcing strip 15 are drawn exaggerated for better illustration. The reinforcement strip 15 is fastened to the magnetic tape 14 at the points 54 and 55 by means of an adhesive.

Roll Sl through the die made of magnetic tape 14 and reinforcing strip 15 between this and the capstan io formed gap. Since the cassette recording / re-existing combination is the one shown in FIG. 4 gc-

~ showed representation between a cape 50 and

a pressure roller 51. The opening 17 is located at the shown embodiment between the opti-

If the input unit is not provided with a device for determining the end of the tape, the tone whale runs 50 with indirect contact with the pressure roller

continue even if the magnetic tape 14 is already 15 see sensor 53 and a light source 52. If the has completely run out of the reel 12 and is not connected to this cassette recording / playback unit is being held. This makes the magnetic tape 14 .at the pressure point after reaching the end point

lung is badly worn, resulting in a tear in the tape

is held when the supply reel runs out of tape, the reinforcement strip is on the location of the stationary belt between pitch wales

a tape end detector is provided, rotates The tone whale 50 continues even after the end of the tape has been reached or after the tape has come to a standstill, wherein

may have. Usual cassette recording / re-μ the tape by the pressure roller Sl against the sound transfer units require the switching of the cassette, shaft 50 is pressed. Since the magnetic tape 14 is fixed to use the other track of the magnetic tape be able. In this position of the cassette, the sound shaft 50 sits in the holes 22 and 34 of the cassette part 10 or 30. as and pressure roller to be arranged. The reinforcement

In the case of a second type of tape cassette strip 15, an optical lead side of the magnetic tape 14, ie. H. the side, It is used to track the end of the tape supply on which capstan 50 is in contact. Although it is ksine for this. The material from which the reinforcement strip is made Standard arrangements are made after a typi- 30 exists, can usually be used for mending See embodiment the arrangement in the area of magnetic tape material used. the

The width of the reinforcement strip IS is preferred equal to that of the magnetic tape 14. The reinforcement strip 15 is attached to two special areas 54 and 55 of the magnetic tape 14 with an adhesive attached The adhesive surfaces 54 and 55 are arranged so that an area 56 (that is the area between the reinforcement strip 15 and the magnetic tape 14, which is when the magnetic tape is fully extended

An opening 17 is through the reinforcement 40 between the capstan SO and the pressure shaft 51 strip 15 and the magnetic tape 14 existing is pressed together) remains free of adhesive. Combination carried out and forms an optical Path for the sensor to determine the end of the strip. The opening 17 is shown in Figure 3 of the embodiment shown

approximately at the point between the two 45 held free of adhesive material to thereby the Cassette openings 32 and 20 shown, with the possibility of contamination of the clay / tone SO this particular arrangement is only to be regarded as an example. The opening 1? could of course placed anywhere * the with the position of the optical sensor it's correct.

between the cassette openings or holes 33 and 21 or 32 and 20. In an alternative design the optical sensor could be located in areas 38 and 39 of the tape cassette.

In the following, reference is again made to FIG. 1 of the drawing. The reinforcement strip IS is attached to the tape 14 at one point which engages the capstan 50 with the tape cassette

Any adhesive commonly used for joining magnetic tape sections can be used as the adhesive material. The area 56 becomes

to prevent. If the adhesive is under the constant pressure between the capstan 50 and the pressure film 51, the adhesive material would be exposed to the outside printed on top of 50 and could possibly match capstan 50 and / or the pressure roller Sl come into contact

The angular movement of the magnetic tape 14 can vary. If the surface of the clay is best explained with reference to FIG 30 serve 55 gnetbands 14 by stretching or some other decum insertion of the TonweQe 50. The holes 32 and formation of the magnetic tape 14. 33 in the cassette part 30 can be used for the guide pin.

or optical detectors are used for the optical detector device. The reel 11 is driven via the drive gate devices for scanning the end position of the bank teeth 35 which the magnetic tape 14 60 of use. In FIG. 4, a typical embodiment is kept taut when the coil 11 is shown as a winding of this type. The opening 17, which coil and the coil 12 serve as a supply reel. The through the reinforcement strip 15, the adhesive drive of the coil 12 takes place via the teeth 36. material 54 and the magnetic tape 15 is on which keep the magnetic tape 14 taut when the one point in the middle between the edges of the Magnetic tape from the reel 11 to the reel 12 on 65 magnetic tape 14 is arranged at the end of the tape running A tape supply finder 37 can be used, supplies an optical detector device the, around 53 on the reels II and 12 in cooperation with a light source or

a ReSeküM 52 uaier Verweadaag der ömnmg

To determine the finite supply of tape.

(ο

Identification signal. Of course, the öff-7 can be matched to the position of the optical detector devices M and 53. If the detector device is in a normal position, opening 17 is at a certain distance in

train arranged on the ends of the magnetic tape. The opening 17 should not be larger than half the width of the Magnetic tape 14 to ensure sufficient stability of the reinforcement strip IS and magnetic tape 14 existing belt combination.

1 sheet of drawings

Claims (4)

ι 2 can be opened. A conventional magnetic tape recording / reproducing unit operating with cassette claims has a combination of capstan and 1. Device to reduce the pressure roller as a belt drive, which is attached to the belt wear and damage to the recording S passage opening of the cassette are arranged, In the case of simpler types of tape device, the are set in reels or cassettes and in tape drive when the tape end is reached up to a tape device from a drive or sound switch-off by the user. One in one shaft are transported, thereby such device used tape is due to the Indicates that a reinforcement strip io continued movement of the attached to the or flaps (15) the section of the tape attacking the capstan of a strong wear (14) overstretched, exposed to tension when the belt comes to a standstill, which leads to the tearing of the belt Reaching the end of the tape between the rcn can, especially since the wear is always on the same Drive shaft (SO) and the associated connection point is caused. pressure element (51) comes to rest and the 15 To the continued abrasion of the tape in the Reinforcing strips with the tape connecting end regions of the tape as a result of the continuation of the To reduce adhesive layer (54, 55) in an area (So) of manual drive with the tape held in place J.cses section is interrupted. or to avoid, is with known tape devices 2 device according to claims 1. wherein the uses a switching device, which when reached Recording medium tape a magnetic tape with so the tape end turns off the tape drive one at a certain distance from the end of the tape or reversed. As switching devices are arranged light-permeable area, which usually uses optical detectors, which are arranged by a tape device attached to the tape recorder and the tape is running Light detector is scanned, characterized by an open op- net that the translucent area scan a through 25 table path. Fi ^; r the proper passage hole (17) in which the reinforcement strip must function of an optical tape end detector (15) overlapped magnetic tape section, which the M.i »netband with a certain distance with a corresponding hole in the reinforcement strip assigned to the end of the tape be provided by the adhesive layer (54, 55) reVh when reaching the Bandenin Alignment is held. 30 des. D. H. when the planned release of the 3. Apparatus according to claim 2, characterized in that gc- switching or reversing command in the optical path indicates that the distance must lie between that of the detector. It is known to have the common light Through hole (17) and the one permeable area of the tape as the transparent end of the tape to be greater than or equal to the length of the th leading strip section, on the one hand Tape path between the Bcfestigunnsstelle of 35 with the spool and on the other hand with one end of the Tape end to the reel (11 or 12) and an opaque tape is connected. light beam of the ulc directed onto the belt (14) In another known embodiment Light detector (52, 53) of a tape recorder controlling the sound wave (50), a light detector is used, is. when one is detected in the area of the end of the tape 4. Device according to claim 2 or 3, there being a 40-arranged lxht-permeable band section characterized in that the width of the reversing signal supplies the belt drive. The reinforcement strip (15) small: or the same, the respective magnetic tape consists of a luminous one of the magnetic tape (14) and the permeable carrier tape, which with the exception of the knife of the common through hole (17) tape end sections with a magnetizable light nijht greater than half the width of the reinforcement 45 impermeable cover is coated. The Zugkungsstreifens and that of the magnetic tape and wear resistance of this known magnet is tape is practically constant over the entire length of the tape, since the translucent Magnetizable layer deposited on the carrier 50 to improve the strength properties none Can contribute. The use of a continuous, translucent plastic film as a carrier The invention relates to a device ger for the magnetizable layer adheres above all to reduce the wear and tear and the lack of the risk of incorrect switching because production of recording media tapes, which on their 55 the only opaque layer by mechanical Ends at or in coils b? W. Cartridges set see stresses can be damaged so are and in a tape recorder from a drive that a shutdown or reverse command to such or capstan are transported. damaged or worn parts of the tape inadvertently With the growing proliferation of cassette tapes can be thrown. Tape devices are faced with the problem of wear and tear at 60. It is also known to use optical fiber guides any subsequent tearing of the tape increased learning cooperating magnetic audio tapes with a Meaning and deserves attention. In the case of conventional or several translucent slits or open Tape cassettes, the tape is to be given away on two reels, if they are detected by wraps. It is attached to the coils so that a complete light-optical sensor sends a reversing signal to the The unwinding of the tape from the empty reel is directed to the tape drive. impede. The loosening or tearing of the tape by this known optical detector arrangement of a coil must therefore be avoided, as voltages can indeed increase the risk of damage during machin- n'.e tape cassette cannot be degraded by the user without damaged tapes, as a permanent