| Patents for G11B 23 - 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 (25,121) |
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| 06/05/1991 | EP0430311A1 Method of reproducing a flexible optical information recording medium and adapter for use in reproduction of said medium |
| 06/05/1991 | EP0430265A2 Magnetic tape reproducing system having analogue digital compatibility |
| 06/05/1991 | EP0430162A2 Optical memory and information processing apparatus |
| 06/05/1991 | EP0429589A1 High storage capacity compact cartridge for use with a precision magnetic tape recorder |
| 06/05/1991 | CN1012768B Guide element structure engageable in sliding contact with magnetic support |
| 06/05/1991 | CN1012766B Optical memory |
| 06/04/1991 | US5021913 Shutter for covering a window opening in a case that contains a flexible disk |
| 06/04/1991 | US5021912 Apparatus for cleaning the recording/playing head, capstan and pinch roller of a cassette type audio recorder/player |
| 06/04/1991 | US5021911 Cleaning cassette |
| 06/04/1991 | US5021903 Magnetic tape cartridge |
| 06/04/1991 | US5020207 Process for producing magnetic hub |
| 05/30/1991 | WO1991007636A1 Projectile for the dispersal of a load with time delay |
| 05/30/1991 | WO1991007124A1 Cartridge rack |
| 05/30/1991 | CA2030922A1 Optical memory and information processing apparatus |
| 05/29/1991 | WO1991008571A1 Storage device |
| 05/29/1991 | EP0429194A2 A mechanically compliant mount in a disk stack assembly |
| 05/29/1991 | EP0429079A2 Disk device with cleaning device, and cleaning method |
| 05/29/1991 | EP0429011A2 Holder for tape cartridges |
| 05/29/1991 | CA2030316A1 One-piece tape reel |
| 05/28/1991 | US5019933 Debris control in an enclosed magnetic tape cartridge |
| 05/28/1991 | US5019925 Reel brake control device for optically controlling a reel brake of a magnetic tape apparatus |
| 05/28/1991 | US5018680 Tape reel of a cassette tape |
| 05/23/1991 | WO1991007752A1 Limited use video cassette and integral mailer |
| 05/22/1991 | EP0428207A2 Disk cartridge including door opening mechanism and improved hub assembly |
| 05/22/1991 | CN1051585A 水基清洁组合物 Water-based cleaning composition |
| 05/21/1991 | US5018039 Disc cartridge with thick portion surrounding head insertion hole |
| 05/21/1991 | US5016834 Adaptor for a small-sized tape cassette |
| 05/21/1991 | CA1284380C Disk cartridge |
| 05/16/1991 | DE4025155A1 Tape cassette drive mechanism - has drive housing which accepts standard rectangular cassette through door and accesses tape through standard mechanism |
| 05/16/1991 | DE3937590A1 Labelling system for video and music cassettes - uses pre-printed labels supplied in TV or radio programme guide |
| 05/15/1991 | EP0427476A2 A tape cassette having outer and inner lids locked by the inner lid |
| 05/15/1991 | EP0427329A2 Optical disc cartridge loading apparatus |
| 05/15/1991 | EP0427181A2 Tape cleaning means for a tape cassette |
| 05/15/1991 | CN2077152U Open cassette video tape |
| 05/15/1991 | CN1051447A Improvements in magnetic tape cassettes |
| 05/14/1991 | US5016241 Small disk adapter with storage case |
| 05/14/1991 | US5016123 Apparatus for magnetically determining the status of a cartridge in a magnetic recorder |
| 05/14/1991 | CA2021357A1 Mechanically compliant mount in a disk stack assembly |
| 05/08/1991 | EP0426132A2 Improved retaining clamp for a disc storage apparatus |
| 05/08/1991 | EP0198083B1 Disc protecting cover in combination with a disc |
| 05/08/1991 | CN1012601B Loading mechanism for disc cassettes |
| 05/07/1991 | US5014152 Flexible magnetic disc with a spring plate in the hub |
| 05/07/1991 | US5014151 Mechanism for opening and closing a shutter of magnetic disc cassette |
| 05/07/1991 | US5014150 Magnetic tape cassette having outer appearance modified by surface printing |
| 05/07/1991 | US5013593 Information storage medium and process for producing the same |
| 05/07/1991 | US5012922 Container for receiving a cassette with a tape-like recording medium |
| 05/07/1991 | US5012919 Apparatus for storing piece goods |
| 05/07/1991 | US5012569 Method of assembling magnetic disk cartridge |
| 05/07/1991 | US5012548 Magnetic tape cleaner |
| 05/07/1991 | CA2029221A1 Mass loader mechanism and method |
| 05/07/1991 | CA1283974C Recorded information verification system |
| 05/02/1991 | WO1991006102A1 Apparatus for the automatic dispensing and placement of adhesive items |
| 05/02/1991 | EP0425125A2 System with a multi-function optical disk and drive for it |
| 05/02/1991 | EP0424986A1 Method and apparatus for manufacturing a flexible optical information recording medium |
| 05/02/1991 | EP0424985A1 An adaptor for holding a single disk for use in a multidisk player |
| 05/02/1991 | EP0424984A1 An adaptor for holding a single disk for use in a multidisk player |
| 05/02/1991 | EP0424983A1 Multi-disk player system |
| 05/02/1991 | EP0424763A2 Package for magnetic tapes wound onto cores |
| 05/01/1991 | CN2076265U Straight-inserted tape outer cassette and its tape support |
| 05/01/1991 | CN1051047A Polyacetal resin composition and guide member for magnetic tape travel |
| 05/01/1991 | CN1012541B Jam magnetic tape driving device |
| 04/30/1991 | US5012380 Article surveillance protection of flexible magnetic computer data storage disks |
| 04/30/1991 | US5012379 Magnetic tape cassette having dust blocking member for preventing entry or dust through brake release lever hole |
| 04/30/1991 | US5012378 Magnetic tape cassette having reel brake structure providing improved dust proofing |
| 04/30/1991 | US5012376 Tape head cleaner cartridge having a mesh cleaning layer |
| 04/30/1991 | US5012374 Recording and/or reproducing apparatus in which the position of head means relative to the record bearing medium is controlled between two positions |
| 04/30/1991 | US5011096 Tape cassette |
| 04/30/1991 | US5011041 Basket for processing thin plates |
| 04/30/1991 | US5011015 Container for magnetic tape cassettes with set displacing spring means |
| 04/30/1991 | CA1283634C Storage container for recording media |
| 04/25/1991 | DE4019251A1 Peripheral velocity switching device for tape player reel disc - has braking device cooperating with driven supply reel or take-up reel |
| 04/24/1991 | EP0424170A2 Self-lubricated polyacetal molding compositions and molded articles formed thereof |
| 04/24/1991 | EP0423662A2 High track density magnetic media with pitted optical servo tracks and method for stamping the tracks on the media |
| 04/24/1991 | EP0423395A1 Liner for floppy disk jacket |
| 04/24/1991 | EP0423216A1 A cleaning cassette for cassette tape recorders. |
| 04/23/1991 | US5010436 Apparatus for incorporating lock plates in video cassettes |
| 04/23/1991 | US5010435 Hub for a disk type recording medium |
| 04/23/1991 | US5010434 Tape cassette having a two-reel brake system having identical brake levers therefor |
| 04/23/1991 | US5010427 Apparatus for positioning a magnetic disk on a disk drive |
| 04/23/1991 | US5009312 Container and improved method for carrying and transporting computer tape cartridges |
| 04/21/1991 | CA2027897A1 Polyacetal resin composition and guide member for magnetic tape travel |
| 04/18/1991 | WO1991005349A1 Apparatus and methods to facilitate tape cassette rental for counting tape usage |
| 04/18/1991 | WO1991005348A1 Apparatus for magnetically determining the status of a cartridge in a magnetic recorder |
| 04/18/1991 | WO1991005334A1 Disc drive with spindle motor rotor configuration in a removable disc cartridge |
| 04/18/1991 | WO1991005322A1 Labelling method |
| 04/18/1991 | WO1991004927A1 Protective case for tape cartridge |
| 04/18/1991 | DE4032008A1 Magnetic audio tape cassette - has low friction projections of resin on inner walls replacing friction springs and reducing number of parts |
| 04/17/1991 | EP0422989A1 Cassette for protecting disc |
| 04/17/1991 | EP0422774A2 Optical memory element and protective sheet for use with the same |
| 04/17/1991 | EP0422692A1 Flexible optical information recording medium and method of manufacturing the same |
| 04/17/1991 | EP0422658A2 Magnetic tape cassette |
| 04/17/1991 | EP0422640A2 Magnetic disk apparatus and magnetic disk |
| 04/17/1991 | CN2075378U Cassette tape capable of cleaning recorder head |
| 04/16/1991 | US5007596 Tape cassette reel having an upper reel molded by dichromatic molding process |
| 04/16/1991 | US5007536 Packaging container for a plurality of recording media in the form of a circle |
| 04/16/1991 | US5007314 Lathe |
| 04/16/1991 | CA1283058C Cleaning device for magnetic head |
| 04/11/1991 | DE3933674A1 Counting system for CD disc use - is built into turntable and is triggered each time system is used |
| 04/11/1991 | CA2027182A1 Protection cartridge for disk |
| 04/10/1991 | EP0421775A2 Disc cartridge |