EP1295291A1 - Kassette für bandförmige datenaufzeichnungsträger, insbesondere eine einspulenkassette - Google Patents
Kassette für bandförmige datenaufzeichnungsträger, insbesondere eine einspulenkassetteInfo
- Publication number
- EP1295291A1 EP1295291A1 EP01940437A EP01940437A EP1295291A1 EP 1295291 A1 EP1295291 A1 EP 1295291A1 EP 01940437 A EP01940437 A EP 01940437A EP 01940437 A EP01940437 A EP 01940437A EP 1295291 A1 EP1295291 A1 EP 1295291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cassette
- guide pin
- tape
- tape guide
- cassette according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- 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
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/107—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using one reel or core, one end of the record carrier coming out of the magazine or cassette
-
- 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
- G11B23/041—Details
- G11B23/047—Guiding means
Definitions
- Cassette for tape-shaped data recording media in particular a single-reel cassette.
- the invention relates to a cassette for tape-shaped data recording media, in particular a single-reel cassette according to the preamble of claim 1.
- cassettes for tape-shaped data recording media in particular single-reel cassettes, essentially consist of a housing, formed from a screwed housing lower part (701) and housing upper part (702), with a spool (30) rotatably mounted therein wound magnetic tape (not shown), the free end of which is connected to a tape guide pin (50), this being by means of a tape guide pin clip (40) in the housing recesses (709, 710) of the cassette lower part (701) and Cassette upper part (702) is fixed, and wherein the tape outlet opening is in a corner of the housing and the tape outlet opening can be closed by a spring-loaded sliding door (60).
- a generic cassette, or components thereof, such as spring-loaded sliding door of the tape exit opening, reel brake and tape guide pin clamp are, for example, the subject of applications EP 0 924 702 A1, EP 0 926 675 A1 and EP 0 926 675 A1.
- a tightly tolerated holding force for the tape guide pin (50) is required for the proper functioning of the tape guide pin gripper on the device side.
- the tape guide pin (50) is made of non-magnetic and stainless metal.
- the use of the material pairing of stainless steel / stainless steel is unfavorable insofar as it tends to "seize” and thus the defined holding force for the band guide pin (50) exceeds the permissible tolerance due to changing friction conditions during use.
- Another factor with negative effects on the required constant holding force can be seen in the production-related tolerances, which have a disproportionate effect on tape guide pin clamps made of spring steel wire or spring sheet metal of this size.
- the parting line (720) between the lower housing part (701) and the upper housing part (702) of the cassette side walls (711, 712) lying in the tape exit direction tends to diverge, whereby the housing halves in this area have their predetermined position to one another, both change horizontally as well as vertically, and consequently the tape guide pin (50) can either assume a position deviating from its predetermined rest position or jam as well as jump out of its detent. In this case, the tape guide pin (50) can no longer be grasped by the device-side gripper of the tape guide device and the cassette is therefore not functional.
- the object was achieved with a cassette mentioned at the outset, the cassette being equipped with a tape guide pin clamp (40a, 40b, 40c, 40d) and this additionally having means which the cassette side walls (711, 712) of the lower housing part (701) lying in the tape outlet direction and the upper housing part (702) has a positive fit, acting in the horizontal and vertical directions.
- the cassette being equipped with a tape guide pin clamp (40a, 40b, 40c, 40d) and this additionally having means which the cassette side walls (711, 712) of the lower housing part (701) lying in the tape outlet direction and the upper housing part (702) has a positive fit, acting in the horizontal and vertical directions.
- Fig. 1 is a schematic plan view of a lower housing part
- Fig. 3 is a side view towards the tape exit opening on the in
- Fig. 4 is a perspective view of a first embodiment of a tape guide pin clip according to the invention
- Fig. 5 is a perspective view of a second embodiment of a tape guide pin clip according to the invention.
- Fig. 6 is a perspective view of a third embodiment of a tape guide pin clip according to the invention.
- Fig. 7 is a perspective view of a fourth embodiment of a tape guide pin clip according to the invention.
- Fig. 8 is a partial plan view of the tape exit opening area of the first embodiment of a cassette according to the invention
- FIG. 9 shows a vertical section through the area of the tape exit opening of the first embodiment of a cassette according to the invention
- Fig. 10 is a partial plan view of the tape exit opening area of the second embodiment of a cassette according to the invention
- FIG. 11 is a perspective view of a part of a cassette according to the invention with a tape guide pin clip inserted according to embodiment 2.
- a first embodiment of the tape guide pin bracket (40a) will now be described with reference to FIGS. 4, 8 and 9.
- the form-fitting, horizontal and vertical fixation of the cassette side walls (711, 712) lying in the direction of the tape exit to one another is carried out by means of at least two clip connections (730) and the retaining plate (401a) of the tape guide pin clamp ( 40a) integrated clips (403a) with corresponding recesses (713, 714) of the cassette side walls (711, 712) can be locked.
- the tape guide pin clamp (40a) is constructed symmetrically to the horizontal center line (H) and consists essentially of the holding plate (401a), the side of the holding plate facing the spool (30) preferably being flat, while the opposite side Starting from the horizontal center line (H) in the direction of the two end faces in accordance with the contour of the receiving pockets (721, 722) located in the cassette side walls (711, 712), and on the front sides (404a) of the holding plate ( 401a) formed spring elements (410a), consisting essentially of an arcuate, cranked fastening section (411a) and the spring arm (412a) at whose respective free end the locking section (414a) connects, its contact surface (415a) to the tape guide pin ( 50) at least is partially cylindrical and the spring element (410a) preferably has a rectangular cross section.
- the outward-facing flat surface (416a) of the locking section (414a) rises in steps over the outward-facing flat surface (413a) of the spring arm (412a) in order, on the one hand, to tolerate the vertical tolerances caused by production, which come into play when the cassette parts are assembled, to compensate and on the other hand to ensure that the holding force for the tape guide pin (50) is not negatively influenced by additional friction based on undesired contact of the spring arm (410a) with the corresponding housing surface, the total height (h) of the locking section (414a) corresponds to the height of the clamping section (503, shown in FIG. 3) of the tape guide pin (50).
- the holding plate (401a) has an essentially H-shaped recess symmetrical to the horizontal center line (H) and to the vertical center line (V), the free ends of the remaining center lobes (402a) being clips (403a) which are inserted when the Snap the tape guide pin clip (40a) into the cassette housing in corresponding recesses (713, 714) of the cassette side walls (711, 712).
- the H-shaped recess and the thickness of the holding plate (401a) are designed such that the dimensions of the clips (403a) thus created on the one hand ensure a sufficiently stable clip connection (730) to the side walls of the cassette (711, 712) and on the other hand no deformation the holding plate (401 a) and the cassette side walls (711, 712).
- the long sides of the holding plate (401a) have mounting slopes (418a, 419a) that taper and taper in the direction of the end faces
- Dovetails are formed so that, in cooperation with the bevels (715, 716) provided in the cassette side walls (711, 712), a dovetail guide is created, by means of which the forces arising when the tape guide pin (50) is moved in and out into the cassette side walls (711, 712).
- a particularly preferred embodiment of the dovetail guide is provided if the guide surfaces formed from the bevels (418a) and pointing in the direction of the fastening section (411a) preferably over the entire surface and the guide surfaces formed from the bevels (419a) and pointing in the direction of the locking section (414a) preferably only partially wear.
- This is achieved, for example, in that the mounting bevels (419a) pointing in the direction of the locking section (414a) are partially set back, so that only partial areas bearing above and below the horizontal center line (H) remain. In this way, manufacturing-related tolerances are compensated for and the tape guide pin clip (40a) can be installed without play in the cassette housing without major tension.
- the recess (726a, 727a) made in the lower part of the cassette (701) and the upper part (702) of the cassette is designed to receive the spring arm (410a) in such a way that it is in the unloaded state, i.e. when the tape guide pin (50 ) is in the rest position in the cassette housing or in the working position outside the cassette housing, on which the projections (724a 725a) abut, the projection (724a) in the lower housing part (701) and the projection (725a) in the upper housing part (702).
- the illustrated further embodiment of the tape guide pin clamp (40b) is also constructed symmetrically to the horizontal center line (H), the retaining plate (401b) corresponding in all structural details of the retaining plate (401a) to the first embodiment.
- the reference numbers which are equivalent to the first embodiment and are not further explained here are identified by a suffix "b", as is generally used in the description of the second embodiment.
- the spring element (410b) itself is subdivided into the support arm (420b) and the spring arm (412b), the locking section (414b), the contact surface (415b) of which is spherical to the tape guide pin (50), is in turn attached to the spring arm (412b), connects and wherein the spring element (410b) is articulated between the support arm (420b) and the spring arm (412b) by means of the fastening section (411b) on the holding plate (401b).
- the feather element preferably has a rectangular cross section.
- the fastening section (411b) is located approximately in the middle of the spring element (410b), but both the position of the fastening section (411b) and the cross section of the spring arm (412b) can be changed taking into account the respective circumstances ,
- the outwardly facing plane surface (416b) of the locking section (414b) also rises in steps over the outwardly facing piano surfaces (413b) of the spring arm (412b), the requirements of the spring element (410b) correspondingly
- a similar, step-like elevation (422b) is attached, on the one hand to narrow the vertical tolerances due to the production, which come into play when assembling the cassette parts, and on the other hand to ensure that the holding force for the tape guide pin ( 50) is not negatively influenced by additional friction, based on undesired contact of the spring arm (410b) with the corresponding surface of the housing recess (726b, 727b), both the total height (h) of the locking section (414b) and the total height of the support arm (421 b) including the stepped elevation attached to its free end ( 422b) corresponds to the height of the clamping section (503) of the tape guide pin (50).
- the recess (726b, 727b) made in the lower part of the cassette (701) and the upper part (702) of the cassette is designed to receive the spring arm (410b) in such a way that it is in the unloaded state, i.e. when the tape guide pin (50 ) is in the rest position in the cassette housing or in the working position outside the cassette housing, on which the projections (724b, 725b, 728b, 729b) abut, the projections (724b, 728b) in the lower housing part (701) and the projections (725b, 729b) in the Upper part of the housing (702).
- Another advantage of this described embodiment is that the forces generated by the retraction and extension of the tape guide pin (50) are introduced via the contact surfaces of the projections (724b, 725b, 728b, 729b) into the cassette bottom and the cassette cover and consequently not act on the dovetail guides and in the area of the contact surfaces of the projections (724b, 725b, 728b, 729b) there is no relative movement between the support arms (420b), the lower part of the cassette (701) and the upper part of the cassette (702) and therefore there is no quality-reducing abrasion at this point.
- the tape guide pin gripper / tape guide system which guides the tape-shaped data carrier to the take-up reel of the drive, places high demands on the tape guide pin clamp (40a, 40b, 40c, 40d). Particular importance is attached to the dimensional accuracy while observing the smallest possible manufacturing tolerances as well as the material used. While the dimensional accuracy is ensured by using the precision injection molding process, with regard to the selection of the material to be used, care must be taken to ensure a high modulus of elasticity and sufficient lubricity in order to prevent inadmissible fluctuations in the holding force due to a decrease in the spring action and to prevent changing friction in the area of the contact surfaces of the tape guide pin and tape guide pin clamp.
- High-quality sprayable plastics are suitable as the material for the tape guide pin clamp (40a, 40b, 40c, 40d), high-quality plastics with a high modulus of elasticity and good wear resistance being understood.
- Thermoplastics, elastomers and duromers are suitable as basic materials.
- PC polycarbonate
- PA polyamide
- POM polyoxymethylene
- Both organic and inorganic substances are suitable as fillers, these being in particle form, for example as fibers or spheres.
- Carbon fiber-reinforced polyoxymethylene is particularly preferred, the lubricity being ensured by adding polytetrafluoroethylene.
- KCL-4022D A material that meets these requirements is available, for example, from LNP Engineering Plastics Inc. under the designation KCL-4022D. This material is based on polyoxymethylene, contains 10% carbon fiber and polytetrafluoroethylene, and has an elastic modulus of 7300 Mpa.
- the wall thickness of the cassette side walls (711, 712) in the tape outlet direction of the lower housing part (701) and upper housing part (702) is preferably in the corresponding area, in particular in the area of the Increase bevels (715, 717, in the lower part of the housing) and (716, 718, in the upper part of the housing - not shown) as far as is permitted by the tape outlet.
- the wall thickness of the cassette side walls (711, 712) in the tape outlet direction of the lower housing part (701) and upper housing part (702) is preferably in the corresponding area, in particular in the area of the Increase bevels (715, 717, in the lower part of the housing) and (716, 718, in the upper part of the housing - not shown) as far as is permitted by the tape outlet.
- a hole (733) is expediently to be made in the side walls of the cassette (711, 712) in the region of the clip connections (730), by means of a suitable one Pen (not shown) the clip
- the third tape guide pin clip (40c) shown in FIG. 6 represents an injection molding-optimized version of the tape guide pin clip (40b) shown in FIG. 5, the holding plate (401c) only having an elongated hole-shaped cutout (409c) instead of the H-shaped cutout.
- the reference numbers which are equivalent to the second embodiment and are not further explained here are identified by a suffix "c".
- FIG. 7 shows a further material-optimized variant of the tape guide pin clamp (40d), the holding plate now only consisting of a web (401 d) which connects the two spring arms (41 Od) to one another.
- the two clips (403d) for connecting the upper housing part (701) and lower housing part (702) and the two tabs (417d) for fixing the tape guide pin clamp (40d) in the housing halves are attached to the web.
- tape guide pin clamps according to the invention is not only limited to screwed-on cassette housings, but can also be used advantageously in the case of cassette housing halves welded together.
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10023854 | 2000-05-16 | ||
| DE10023854A DE10023854A1 (de) | 2000-05-16 | 2000-05-16 | Kassette für bandförmige Datenaufzeichnungsträger, insbesondere eine Einspulenkassette |
| PCT/EP2001/005308 WO2001088919A1 (de) | 2000-05-16 | 2001-05-10 | Kassette für bandförmige datenaufzeichnungsträger, insbesondere eine einspulenkassette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1295291A1 true EP1295291A1 (de) | 2003-03-26 |
Family
ID=7642182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01940437A Withdrawn EP1295291A1 (de) | 2000-05-16 | 2001-05-10 | Kassette für bandförmige datenaufzeichnungsträger, insbesondere eine einspulenkassette |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6769640B2 (de) |
| EP (1) | EP1295291A1 (de) |
| JP (1) | JP2003533842A (de) |
| KR (1) | KR20020094056A (de) |
| CN (1) | CN1429390A (de) |
| AU (1) | AU2001274015A1 (de) |
| BR (1) | BR0109618A (de) |
| CA (1) | CA2408430A1 (de) |
| DE (1) | DE10023854A1 (de) |
| MX (1) | MXPA02009717A (de) |
| WO (1) | WO2001088919A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695242B1 (en) * | 2000-06-29 | 2004-02-24 | Hewlett-Packard Development Company, L.P. | Leader pin seat for tape cartridges |
| JP4262938B2 (ja) * | 2002-06-27 | 2009-05-13 | 富士フイルム株式会社 | 記録テープカートリッジ |
| US7815140B2 (en) * | 2008-03-11 | 2010-10-19 | Fujifilm Corporation | Recording tape cartridge |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3695921B2 (ja) | 1997-12-22 | 2005-09-14 | 富士写真フイルム株式会社 | 磁気テープカートリッジ |
| JP3642950B2 (ja) | 1997-12-24 | 2005-04-27 | 富士写真フイルム株式会社 | 磁気テープカートリッジ |
| JP4180688B2 (ja) | 1998-05-29 | 2008-11-12 | 富士フイルム株式会社 | 磁気テープカートリッジ |
| JP3739579B2 (ja) * | 1998-11-20 | 2006-01-25 | 富士写真フイルム株式会社 | 磁気テープカートリッジ |
| JP2000331452A (ja) | 1999-05-17 | 2000-11-30 | Hitachi Maxell Ltd | 単リール型の磁気テープカートリッジ |
| JP3971789B2 (ja) | 1999-10-12 | 2007-09-05 | 日立マクセル株式会社 | 単リール型の磁気テープカートリッジ |
-
2000
- 2000-05-16 DE DE10023854A patent/DE10023854A1/de not_active Withdrawn
-
2001
- 2001-05-10 CN CN01809575A patent/CN1429390A/zh active Pending
- 2001-05-10 MX MXPA02009717A patent/MXPA02009717A/es unknown
- 2001-05-10 KR KR1020027015329A patent/KR20020094056A/ko not_active Withdrawn
- 2001-05-10 AU AU2001274015A patent/AU2001274015A1/en not_active Abandoned
- 2001-05-10 JP JP2001584430A patent/JP2003533842A/ja active Pending
- 2001-05-10 EP EP01940437A patent/EP1295291A1/de not_active Withdrawn
- 2001-05-10 CA CA002408430A patent/CA2408430A1/en not_active Abandoned
- 2001-05-10 US US10/239,850 patent/US6769640B2/en not_active Expired - Fee Related
- 2001-05-10 WO PCT/EP2001/005308 patent/WO2001088919A1/de not_active Ceased
- 2001-05-10 BR BR0109618-4A patent/BR0109618A/pt not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0188919A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1429390A (zh) | 2003-07-09 |
| US20030089810A1 (en) | 2003-05-15 |
| JP2003533842A (ja) | 2003-11-11 |
| DE10023854A1 (de) | 2001-11-22 |
| MXPA02009717A (es) | 2003-03-27 |
| CA2408430A1 (en) | 2002-11-07 |
| BR0109618A (pt) | 2004-01-13 |
| KR20020094056A (ko) | 2002-12-16 |
| WO2001088919A1 (de) | 2001-11-22 |
| US6769640B2 (en) | 2004-08-03 |
| AU2001274015A1 (en) | 2001-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20021216 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EMTEC MAGNETICS GMBH |
|
| RTI1 | Title (correction) |
Free format text: CASSETTE FOR TAPE TYPE DATA RECORDING MEDIUM, IN PARTICULAR A SINGLE REEL CASSETTE |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20050705 |