WO1987005143A1 - Procede et dispositif de nettoyage des composants mecaniques d'un magnetoscope - Google Patents

Procede et dispositif de nettoyage des composants mecaniques d'un magnetoscope Download PDF

Info

Publication number
WO1987005143A1
WO1987005143A1 PCT/US1987/000436 US8700436W WO8705143A1 WO 1987005143 A1 WO1987005143 A1 WO 1987005143A1 US 8700436 W US8700436 W US 8700436W WO 8705143 A1 WO8705143 A1 WO 8705143A1
Authority
WO
WIPO (PCT)
Prior art keywords
ribbon
cleaning
housing
carrying member
peripheral surface
Prior art date
Application number
PCT/US1987/000436
Other languages
English (en)
Inventor
Eivind Clausen
Original Assignee
Allsop Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allsop Inc. filed Critical Allsop Inc.
Publication of WO1987005143A1 publication Critical patent/WO1987005143A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/41—Cleaning of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/049—Cassettes for special applications not otherwise provided for

Definitions

  • the present invention relates to a method and apparatus for cleaning operating components of a video player/recorder.
  • the cassette housing is placed into a playing receptacle of the player/recorder, and the start knob or button is moved to the "on" position so that guide members of the player/recorder engage the cleaning ribbon and bring it into engagement with at least the drum of the video head, and in seme instances, the other operating components which would normally come into contact with the playing tape.
  • the druir in which the playing head is mounted rotates at a high rate of speed.
  • the drum for the playing head remains stationary, while the playing head itself rotates at a high rate of speed along the circumference of the drum.
  • the magnetic tape which is either being played or on which the recording is being made moves along its length at a controlled rate of speed adjacent the playing head. If the drum of the playing head is stationary, the relative movement between the magnetic tape and the dria ⁇ is at a substantially lower level. On the other hand, if the drum is rotating at a high rate of speed (e.g. 1000 to 2000 revolutions per minute) , the relative speed between the drum and the' magnetic tape is rather high.
  • a high rate of speed e.g. 1000 to 2000 revolutions per minute
  • the cassette cleaners have had the cleaning ribbon mounted in one of two ways.
  • the cleaning ribbon is moved out of the cassette housing into engagement with the drum of the cleaning head, and the cleaning ribbon does not move along its axial length.
  • the cleaning ribbon is mounted on spools within the cassette housing so that after it is moved out of the cassette housing into cleaning engagement with the drum (and possibly other components of the player/recorder) , the cleaning ribbon moves along its axial length at substantially the same rate of speed as the magnetic tape in the normal mode of operation of the player/recorder. In either case, there is relative movement between the cleaning ribbon and the druir of the pl aying head .
  • the cassettes for magnetic tapes generally have two spools which engage spindles of the player/ recorder .
  • the magnetic tape will be unwound from one spool and wound onto the other. If the spindles (or possibly other operating components of the player/ recorder) sense a resistance to rotation greater than a certain level , this will generally activate a shut off mechanism in the player/ recorder . The reason for this is that the increased resistance indicates a problem, and the player/ recorder shuts off to avoid damage to the magnetic tape or possibly damage to the player/recorder itself .
  • shutoff mechanisms there are the capstan and pinch roller which grip opposite sides of the tape , with the capstan being rotated under power so as to cause rotation of the pinch roller and move the magnetic tape along its length at a controlled rate. If for some reason the capstan is not causing the corresponding rotation of the pinch roller, so that the tape is not being moved, this might also trigger a shutoff mechanism.
  • the magnetic tape is made of a quite thin, rather flexible, low friction material .
  • the cleaning ribbon of a cassette cleaner in order to perform its cleaning function properly, has a somewhat different structure.
  • the cleaning ribbon is quite often made somewhat thicker than the conventional magnetic tape, so it would be more absorbant, with the result that if the cleaning ribbon is arranged so that it moves through the player/recorder along generally the same path as the magnetic tape, the greater stiffness of the cleaning ribbon (relative to the magnetic tape) might create greater resistance to the movement of the cleaning ribbon.
  • these various operating characteristics of the cleaning ribbon sometimes create sufficient resistance to the operating components of the player/recorder so as to trigger an automatic shutoff mechanism of the player/recorder, thus prematurely stopping the cleaning action.
  • a further complicating factor is that quite commonly the action of the cleaning fluid increases the frictional force resulting from engagement of the wetted ribbon against the drum. Thus, there is a tendency for the cleaning ribbon to create an excessive resisting force to the rotation of the drum, thus prematurely triggering the shutoff mechanism of the player/recorder.
  • There have been various attempts to lower the resistance created by the cleaning ribbon such as modifying the material used, the thickness of the material, the material's absorbancy, etc. In some instances, such attempts to decrease the frictional resistance or other resistance have the effect of diminishing the cleaning effectiveness of the ribbon.
  • the cleaning apparatus of the present invention is arranged to clean a playing and/or recording machine, where the machine has: a. a structure defining a recess to receive a tape cassette, said recess having a forward portion to receive a front portion of said cassette, and a rear portion to receive a rear portion of said cassette; b. a head carrying member which carries a rotating head element and has a curved peripheral surface; c.
  • the cleaning apparatus comprises a housing having a first and second guide means movable between first and second nonoperating positions, respectively, and first and second operating positions, respectively, said first guide means in said first nonoperating position being located at a first retracted guide location, said second guide means in said second nonoperating position being located at a second nonoperating guide location, said first guide means being arranged so that with a tape cassette in the recess, the first guide means in moving from the first nonoperating position to the first operating position engages a first tape portion positioned along a first section of the front portion of the cassette and moves the tape outwardly from the cassette into engagement with a first side portion of the peripheral surface of the head carrying member, said second guide means being arranged so that with the tape cassette in the recess, the second guide means in moving from the second nonoperating position to the second operating position engages a second tape portion positioned along a second section of the front portion of the cassette and moves the tape outwardly from the Gassette into engagement with a second side portion of the head carrying member
  • a cleaning ribbon is mounted in the housing in a manner to have a first retracted position and a second cleaning position.
  • the ribbon has first and second end portions operatively connected to the housing, and a third intermediate portion which, with the ribbon in its first retracted position, and with the housing positioned in the recess, extends along a forward edge portion of the housing.
  • First and second sections of the intermediate ribbon portion are positioned forwardly of the first and second retracted guide locations, respectively, when the housing is positioned in the recess of the machine.
  • the locating element is positioned forwardly of a third adjacent section of the ribbon which extends between the first and second sections.
  • the locating element is positioned, with the housing located in the recess, relative to the first and second guide means and relative to the peripheral surface of the head carrying member, in a manner that when said first and second guide means engage said first and second sections of the intermediate ribbon portion and move outwardly to their first and second operating positions, the locating element restrains outward movement of the third section of the intermediate ribbon portion so as to maintain said third ribbon section out of engagement with the periperhal surface of the head carrying member.
  • first and second spool means rotatably mounted to the housing at first and second spool locations to engage first and second sprockets, respectively, of-the machine.
  • the first and second end portions of the ribbon are connected to the first and second spool means, respectively.
  • the locating element comprises a roller rotatably mounted in the housing so as to engage the cleaning ribbon with a relatively low frictional engagement.
  • the cleaning ribbon is a wettable ribbon adapted to receive a cleaning solution on the ribbon, in a manner that when the ribbon comes into engagement with the peripheral surface of the head carrying member, the cleaning solution is able to be applied to the head carrying member.
  • the cleaning apparatus is provided with means to enable the cleaning ribbon to be wetted at spaced locations along its length.
  • the ribbon has alternate wetted and dry locations along the length of the cleaning ribbon.
  • the housing is provided with opening means enclosing spaced segments of the ribbon. This permits application of a cleaning solution at said spaced locations by applying the cleaning solution through the opening means.
  • the cleaning ribbon has first and second contact portions which engage first and second surface portions of the peripheral surface of the head carrying member.
  • this third portion of the peripheral surface of the head -carrying member is at least about l/4th of a circle in arcuate length around the head carrying member.
  • each of the first and second contact portions of the cleaning ribbon engage first and second -10-
  • a cleaning apparatus is provided as described above.
  • the cleaning apparatus is placed in the recess of the machine, and the first and second guide means are caused to move outwardly to bring the cleaning ribbon into cleaning engagement with the peripheral surface of the head carrying member.
  • the locating element is utilized to restrain outward movement of the cleaning ribbon in the manner described above.
  • Figure 1 is a plan view of a typical video tape cassette and the operating components of one type of a video player/recorder for which the present invention is adapted to be used, with the tape being in its retracted position in the cassette;
  • Figure 2 is a view similar to Figure 1, illustrating the tape baing extracted from the cassette and in its operating position;
  • Figure 3 is a top plan view of a cassette cleaner of the present invention, shown in its operating position in a cassette receiving recess of a video player/recorder, and with a portion of the top cover removed for purposes of illustration, and with the cleaning ribbon in its retracted position;
  • Figure 4 is a view similar to Figure 3, showing the cleaning ribbon extracted from the cassette cleaner and in its operating or cleaning position;
  • Figure 5 is a top plan view similar to Figure 3, but showing the cassette cleaner of the present invention in broken lines, and illustrating in full lines the ribbon tensioning device present in the existing player/recorder, and with the cleaning ribbon in its retracted position;
  • Figure 6 is a view similar to Figure 5, illustrating the ribbon positioned outwardly in its cleaning position, and with the tensioning device of the player/recorder operating to control tension on the ribbon;
  • Figure 7 is a front elevational view taken at line 7-7 of Figure 3 and illustrating a retaining element or roller of the cassette cleaner of the present invention.
  • the present invention is particularly adapted to clean the operating components of a video playing/recording unit which is adapted to accept cassette- ype playing tapes, where the tape is extracted by guide members to be positioned in its playing/recording location in a manner that the tape extends in approximately a 180° arc around the periphery of the drum. Further, the tape is positioned so that one set of movable guide members pulls the tape outwardly from the cassette housing to be positioned along one side of the drum, while a second set of guide members pulls the tape outwardly so as to be positioned on an opposite side of the drum, with the tape extending along the 180° arc between the two sides.
  • the video playing/recording unit 10 will be referred to as "the video unit” or simply as "unit”.
  • the tape cassette 12 comprises a case or housing 14 and a magnetic tape 16.
  • the tape 16 is wound on right and left spools 18 and 20, the tape extending from one spool 18 to a location 22 at the front left corner of the case 14, thence along the front edge 24 of the case 14 to the right front location 26, and thence back to the right spool 20.
  • the tape 16 is shown in its nonplaying or retracted position, and in Figure 2 in its operating position.
  • the drum 30 has the general configuration of a circular disc (i.e. a shallow cylinder) , and has a peripheral cylindrically-shaped operating surface 36.
  • the playing head or element 32 is mounted at the peripheral surface 36 and in this particular player/recorder, the drum 30 itself rotates about the center axis 38.
  • the unit 10 also comprises a number of mechanical components which operate directly on the tape 16 to properly position the tape 16 in the operating mode, and also to move the tape 16 along its operating path.
  • a capstan 40 and a pinch roller 42 Further, there are guide rollers 44 and 46.
  • guide rollers 44 and 46 there are six moveable guide members designated 48-58, respectively.
  • the guide members 50-58 engage the back side of the tape 16 and move it outwardly into the playing position shown in Figure 2.
  • three of the guide rollers (50-54) carry the tape 16 outwardly along one side of the drum 30, while two other guide rollers 56 and 58 carry the tape 16 to the opposite side of the drum 30, with the guide roller 48 performing a locating function.
  • first drive sprocket 60 which fits into the center portion of the right spool 20 in a spline fit so that it is able to drive the spool 20.
  • second take-up sprocket 62 which fits through the center of the left spool 18 in a spline fit.
  • shutoff light 64 which fits in a matching recess formed in the forward middle portion of the bottom of the case 14.
  • the unit 10 has a left photocell 70 positioned adjacent the left side of the case 14 and in alignment with the light 64 and the left opening 66.
  • the photocell 70 (and the photocell 72 if it exists) is shielded by the tape.
  • the tape 16 travels to its end position, there is a clear leader portion which permits the light 58 to activate the photocell 70 (or the photocell 72) to activate the shutoff mechanism in the unit 10.
  • FIG. 3 and 4 where a cassette cleaner 74 of the present invention is shown in its operating position in the video unit 10.
  • the prior art video unit 10 which is shown in Figures 3-6 is of the same basic type as that shown in Figures 1 and 2 and already exists in the prior art, but has some minor differences.
  • the somewhat modified prior art version of the video unit 10 is shown in Figures 3-6 primarily for convenience of illustration and also for convenience in explaining certain operating characteristics of such a prior art video unit, and more specifically, the tape tensioning means of the video unit 10.
  • the specific structural differences in the unit 10 shown in Figures 3-6 will be explained later herein.
  • the cassette cleaner 74 of the present invention could be used with either of the video units (i.e. the one shown in
  • the cassette cleaner 74 of the.present invention comprises a case or housing 76 which.is or may be substantially similar to the housing 14 of the conventional tape cassette 12. As shown herein, this housing 76 comprises a front wall portion 78, a rear -17-
  • the front edge portion of the housing 76 is formed with two recesses, namely a left recess 88 provided to accommodate the guide members 50* , 52 and 54, and a central forward recess 90, located to accommodate the two movable guide members 56 and 58.
  • a cleaning ribbon 92 is mounted in the housing 76 in a manner that a first left end portion 94 is connected to a left spool 96 and a second right end portion 98 is connected to a right spool 100.
  • the two spools 96 and 100 are mounted in the housing 76 in generally the same manner and in generally the same location as the spools 60 and 62 in the conventional tape cassette 12, so that these spools 96 and 100 engage the drive spindles 62 and 60 of the player/recorder unit 10.
  • the left end portion 94 of the ribbon 92 extends forwardly to engage and extend around a locating pin 102 positioned in the left forward corner of the housing 76. From the pin 102, the ribbon 92 extends at 92a across the forward part of the aforementioned left forward recess 88. The ribbon 92 then extends from the ribbon portion 92a to engage the front edge of a left locating wall or abutment 104 and then moderately rearwardly and to the right to reach behind a locating element or roller 106 and then extend further to the right and moderately forwardly to engage a forward edge of a second right abutment or locating wall 108.
  • This locating roller 106 is particularly critical- in the operation of the present invention, and its function will be discussed more fully later herein in the description of the operation of the present invention. That portion of the ribbon 92 extending between the two abutments or walls 104 and 108 and behind the locating roller 106 is designated 92b.
  • the ribbon 92 extends from the ribbon portion 92b further to-the right, as at 92c, to be positioned at the forward portion of the aforementioned recess 90 and then extends further to the right to a forward end location adjacent to the capstan 40.
  • the locating of the right forward portion of the ribbon 92 can be accomplished in a number of ways.
  • there is provided a pair of cleaning pads namely a first pad 110 positioned to engage and clean the capstan 40, and a second pad 112 positioned to engage and clean the pinch roller 42.
  • the cleaning ribbon portion 92c extends from the right locating wall 108 to engage the forward end of the capstan pad 110, and to extend therefrom at 92d to engage the spool 100.
  • These cleaning pads 110 and 112 can be mounted and positioned in accordance with teachings presently existing in the prior art.
  • the top wall 84 of the housing 76 is provided with a removable circular cover 114 that fits over the left spool 96.
  • This cover 114 is provided with a pair of diametrically opposed openings 116 which are positioned to expose portions of the cleaning ribbon 92. By applying a cleaning fluid ' through these openings 116 and onto the ribbon 92, the ribbon 92 becomes wetted with the solution at spaced locations along the length thereof.
  • the cleaning ribbon 92 is positioned so that the ribbon 92 is wound a number of times around the left spool 96 so that several overlapping portions of the -19-
  • ribbon 92 appear at the openings 116 which are formed in the top cover 114. Further, the ribbon 92 is positioned so that the forward ribbon portions 92a-c fit closely against the front edge portion of the housing 76. Then a cleaning solution is applied through the openings 116.to wet portions of the ribbon 92, this resulting in a wetted pattern of alternate wet and dry portions of the ribbon 92.
  • the cassette cleaner 74 is inserted into the recess or cavity 118 that already exists in the player/recorder 10, and which is arranged to receive the conventional tape cassette 12.
  • This recess 118 is indicated somewhat schematically in Figures 3 and 4 by showing at 120 a portion of the video unit structure which defines the cassette receiving recess 118.
  • the operating knob or button of the video unit 10 is moved to the play or record position to cause the guide members 50' and 52-58 to move outwardly from the two recessed areas 88 and 90 to the positions shown in Figure 4.
  • the guide members 50', 52 and 54 carry a left forward portion 92e of the ribbon 92 outwardly so that it comes into engagement with the erase head 28, the stationary guide roller 46 and with a left circumferential portion 36a of the surface 36 of the drum 30.
  • the two right guides 56 and 58 carry the ribbon 92 forwardly so that there is a ribbon portion 92f which comes into cleaning engagement with the audio head 34 and with a right peripheral portion 36b of the cylindrical surface 36 of the drum 30.
  • the locating roller 106 engages and restrains the cleaning ribbon portion 92b so that one ribbon portion 92g extends from the drum surface portion 36a rearwardly with a moderate slant to the right toward the locating roller 106, and so that a second ribbon portion 92h extends from the drum surface portion 36b rearwardly with a moderate slant to the left toward the locating roller 106.
  • the locating roller 106 is so positioned, relative to the location of the guide member 54 and the drum surface 36, that the length of the drum surface segment 36a that is engaged by a related contact portion of the cleaning ribbon 92 is approximately 45° in arcuate length (i.e. about l/8th of a circle).
  • the locating roller 106 is positioned relative to the drum surface 36 and the locating element 56 that the drum surface portion 36b that is engaged by a related contact portion of the ribbon 92 has an arcuate length of approximately 30°.
  • there is a substantial arcuate length 36c of the drum surface 36 which is intermediate to the two..portions 36a and 36b and which is out of contact with the ribbon 92.
  • the capstan 42 moves to press the ribbon 92 against the capstan 40, so that rotation of the capstan 40 causes the ribbon 92 to move along its length, with the ribbon 92 being unwound from the left spool 96 and wound onto the right spool 100.
  • the guide members 50' and 52-58 are moved back to their retracted positions (e.g. by turning the control knob of the unit 10 to its "off" position), as shown in Figure 3, and the drive spindles 62 and 60 operate to cause the ribbon 92 to be wound onto one or the other of the spools 96 and 100. (The precise manner in which this occurs may vary, depending upon the particular type of unit 10 being used.)
  • the locating roller 106 is significant in the operation of the present invention. To comment on this further, it has been found that the utilization of the locating roller 106, in combination with the other components of the cassette cleaner 74 and with the operating components of the unit 10, provides engagement of the cleaning ribbon 92 with the components in a manner to properly achieve the cleaning action, while alleviating to a significant extent the problems related to the frictional engagement of the ribbon 92 with the various components (e.g. problems of premature shut off of the unit 10 or possibly inadequate engagement for proper cleaning of the components) .
  • the tensioning mechanism 122 comprises a friction band or brake band 124 which curves in an arc of about 180° and is positioned to engage a cylindrical surface 126 of a disc 128 which is fixedly connected to the left spindle 62 at a location below the spindle 62.
  • One end 130 of this band 124 is connected to stationary structure at 132 in the housing of the unit 10.
  • a second end 133 of the band 124 is connected at 134 to an arm 136 that is pivotally connected at 138 to fixed structure in the video unit 10.
  • An outer swing end of the arm 136 carries the aforementioned guide member 50' .
  • the guide member 50' is positioned somewhat differently from the guide member 50 shown in Figures 1 and 2. The reason for this is believed to be due simply to differences in the specific construction of the video unit 10 which is shown in Figures 1 and 2, and the unit 10 which is shown in Figures 3-6.
  • the guide member 50' is moved by an actuating mechanism (not shown for ease of illustration) to push the ribbon 92 to the left beyond a line drawn between the two stationary guide rollers 48" and 48".
  • the arm 136 causes the brake band 124 to come into frictional engagement with the disc surface 126 to retard rotation of the disc 128, and thus, retard rotation of the spindle 62 attached thereto.
  • this same tensioning mechanism 122 acts in substantially the same manner on a conventional magnetic tape 16 of a conventional tape cassette 12.
  • the tape tensioning mechanism 122 will be optimized to produce just the right amount of tension on the magnetic tape 16 so that proper operation can be achieved.
  • the locating roller 106 causes the cleaning ribbon 92 to engage two relatively smaller arcuate outer surface segments of the drum surface 36, in comparison with the arcuate length of the drum surface 36 engaged by the magnetic tape 16, operating in the conventional manner, as illustrated in Figures 1 and 2.
  • the result is that the total frictional force exerted by the ribbon 92 against the surface 36 of the drum 30 is substantially less than it would be if the cleaning ribbon 92 were engaging a full 180° of the cylindrical surface 36 of the drum 30.
  • the overall resistance created by the ribbon 92 can be kept within appropriate limits so as not to prematurely trigger any shutoff mechanisms in the video unit 10.
  • this roller 106 has the configuration of a vertical cylinder 140, extending between the bottom wall 86 and top wall 84, and rotatably mounted to a pin 142 connected between the walls 84 and 86.
  • T e roller 140 is at a fixed location relative to the case or housing 76, and its position is selected so that the frictional engagement of the ribbon 92 with the drum 30 and with the other components is optimized to allow proper cleaning action and not create excess frictional force.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

Dispositif de nettoyage à cassette destiné à être introduit dans le logement de cassette (118) d'un magnétoscope. Un ruban de nettoyage (92) est monté dans la cassette de nettoyage, et des organes de guidage (48-58) du magnétoscope sortent de la cassette le ruban de nettoyage pour le mettre en contact avec la tête rotative (30, 32) du magnétoscope. La cassette de nettoyage possède un élément stationnaire (106) qui limite le mouvement vers l'extérieur d'une partie du ruban, de sorte que celui-ci entre en contact avec la surface périphérique du tambour rotatif portant la tête magnétique, et ceci sur des zones de contact arquées de longueur relativement réduite. Cet agencement permet de diminuer le frottement entre le ruban et le tambour rotatif.
PCT/US1987/000436 1986-02-25 1987-02-24 Procede et dispositif de nettoyage des composants mecaniques d'un magnetoscope WO1987005143A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83387586A 1986-02-25 1986-02-25
US833,875 1986-02-25

Publications (1)

Publication Number Publication Date
WO1987005143A1 true WO1987005143A1 (fr) 1987-08-27

Family

ID=25265496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/000436 WO1987005143A1 (fr) 1986-02-25 1987-02-24 Procede et dispositif de nettoyage des composants mecaniques d'un magnetoscope

Country Status (4)

Country Link
EP (1) EP0259477A1 (fr)
AU (1) AU7202287A (fr)
CA (1) CA1264374A (fr)
WO (1) WO1987005143A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU669220B2 (en) * 1992-11-16 1996-05-30 Knoll Systems International Ltd An improved video head cleaner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066999A (en) * 1980-01-04 1981-07-15 Allsop Inc Video player/recorder cleaning apparatus & method
BE891096A (fr) * 1981-11-12 1982-03-01 Staar Sa Cassette de nettoyage pour enregistreurs magnetiques
FR2497594A1 (fr) * 1981-01-06 1982-07-09 Allsop Inc Dispositif et procede de nettoyage pour appareil de lecture et/ou enregistrement
US4462056A (en) * 1981-11-30 1984-07-24 Stephen Kara Video tape recorder cleaning device
GB2152268A (en) * 1983-12-23 1985-07-31 Allsop Inc Cleaning ribbon for cleaning a video player/recorder
EP0210787A2 (fr) * 1985-07-26 1987-02-04 Joseph Frederick Fritsch Dispositif de nettoyage d'appareil vidéo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066999A (en) * 1980-01-04 1981-07-15 Allsop Inc Video player/recorder cleaning apparatus & method
FR2497594A1 (fr) * 1981-01-06 1982-07-09 Allsop Inc Dispositif et procede de nettoyage pour appareil de lecture et/ou enregistrement
BE891096A (fr) * 1981-11-12 1982-03-01 Staar Sa Cassette de nettoyage pour enregistreurs magnetiques
US4462056A (en) * 1981-11-30 1984-07-24 Stephen Kara Video tape recorder cleaning device
GB2152268A (en) * 1983-12-23 1985-07-31 Allsop Inc Cleaning ribbon for cleaning a video player/recorder
EP0210787A2 (fr) * 1985-07-26 1987-02-04 Joseph Frederick Fritsch Dispositif de nettoyage d'appareil vidéo

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU669220B2 (en) * 1992-11-16 1996-05-30 Knoll Systems International Ltd An improved video head cleaner

Also Published As

Publication number Publication date
AU7202287A (en) 1987-09-09
EP0259477A1 (fr) 1988-03-16
CA1264374A (fr) 1990-01-09

Similar Documents

Publication Publication Date Title
US4580185A (en) Video player/recorder cleaning apparatus and method
US4408236A (en) Magnetic tape recording and/or reproducing apparatus
US4462056A (en) Video tape recorder cleaning device
US4811149A (en) Method and apparatus for cleaning operating components of a video player/recorder
US4616283A (en) Apparatus for cleaning a video player/recorder
EP0506856B1 (fr) Methode et appareil de nettoyage de certaines parties d'un enregistreur de videocassettes
US4941065A (en) Apparatus for cleaning a video player/recorder
US4498113A (en) Apparatus and method for cleaning a video player/recorder
CA1264374A (fr) Methode et appareil pour nettoyer les pieces actives d'un magnetoscope
US4635154A (en) Cleaning ribbon and method for cleaning a video player/recorder
US3869723A (en) Magnetic recording and reproducing apparatus having dual capstans for use with cassettes
JP2733115B2 (ja) テープレコーダのテンション調節装置
US4936524A (en) Recording and/or reproducing apparatus for a record carrier in tape form
US4635156A (en) Cleaning cassette for magnetic tape apparatus
JPS581848A (ja) 磁気記録再生装置
CA1334770C (fr) Magnetophone lecteur-enregistreur avec systeme d'entrainement unique
JPS6032246B2 (ja) クリ−ニングカセツト構造
US3420460A (en) Self-threading tape recorder
JPH0743771Y2 (ja) クリーニングカセット
JPS5914932Y2 (ja) テ−プ走行制御装置
JPH03241512A (ja) 回転磁気ヘッドの清掃装置
JP2840523B2 (ja) テープローディング機構
CA1182558A (fr) Dispositif et methode de nettoyage pour magnetoscope
JPH0244329Y2 (fr)
JP2563813Y2 (ja) オートヘッドクリーニング装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CH DE DK FI GB HU JP KP KR LK LU MC MG MW NL NO RO SD SE SU

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642