~™ mi ii ii ii mi iii urn iii iii iii (19) J European Patent Office

Office europeen des brevets (11) EP 0 691 650 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publicationation A3: (51 ) |nt. CI.6: G1 1 B 23/03 23.07.1997 Bulletin 1997/30

(43) Date of publication A2: 10.01.1996 Bulletin 1996/02

(21) Application number: 95114972.3

(22) Date of filing: 14.02.1991

(84) Designated Contracting States: (62) Document number(s) of the earlier application(s) in DE FR GB NL accordance with Art. 76 EPC: 91102110.3/0 442 502 (30) Priority: 14.02.1990 JP 13181/90 U 19.02.1990 JP 15465/90 U (71) Applicant: DAI NIPPON INSATSU KABUSHIKI 26.02.1990 JP 18575/90 U KAISHA 15.03.1990 JP 26509/90 U -To (JP) 15.03.1990 JP 26510/90 U 28.03.1990 JP 32587/90 U (?2) Inventors: 17.04.1990 JP 40851/90 U • Akiyama, Noboru, 17.04.1990 JP 40853/90 U c/o Dai Nippon Insatsu K.K. 17.04.1990 J P 40854/90 U Shinjuku-ku, Tokyo-to (JP) 17.04.1990 J P 40855/90 U • Kameda, Katsumi, 17.04.1990 JP 40856/90 U c/o Dai Nippon Insatsu K.K. 17.04.1990 JP 40857/90 U Shinjuku-ku, Tokyo-to (JP) 17.04.1990 JP 40858/90 U 17.04.1990 J P 40859/90 U (74) Representative: Grunecker, Kinkeldey, 17.04.1990 JP 40860/90 U Stockmair & Schwanhausser 17.04.1990 JP 40861/90 U Anwaltssozietat Maximilianstrasse 58 80538 Munchen (DE)

(54) Disk cartridge

(57) The present invention relates to an improved disk cartridge including a slider for supporting a shutter provided slidably on a case for accommodating a disk to FIG. 17 open and close a head hole for receiving a reading/writ- ing head and a spindle hole for receiving a spindle hole for rotating the disk. The shutter is urged by a spring member in its closing direction and the slider is slit in a guide portion provided on a front end of the case. The slider comprises a shutter support portion for support- ing the shutter and a pair of engaging projection bodies respectively provided at front and rear portions of the shutter support portion, the engaging projection bodies CO into the each < being pushed guide portion, engaging pro- jection being provided with a dividing groove to permit o each to shrink in its widthwise 10 engaging projection CO direction thereby to enable the slider to be pushed into the guide portion. CT> CO o Q_ LU Printed by Rank Xerox (UK) Business Services 2.14.11/3.4 EP 0 691 650 A3

Patent Application Number European EUROPEAN SEARCH REPORT Office EP 95 11 4972

DOCUMENTS CONSIDERED TO BE RELEVANT - ,„ _ Citation of document with indication, where appropriate, Relevant CLASSIFICATION OF THE tategory or relevant passages to claim APPLICATION (Int.CI.6) A EP 0 339 651 A (DAINIPPON PRINTING CO LTD) 1,3,9 G11B23/03 2 November 1989 * column 3, line 40 - column 9, line 6; figures 1-16 *

A EP 0 271 997 A (0PTIC0RD) 22 June 1988 1-4,9 * column 6, line 29 - column 8, line 6 * * column 10, line 33 - column 11, line 48; figures *

A EP 0 174 651 A ( CORP) 19 March 1986 1,3,4,9 * page 4, line 33 - page 6, line 28; figures *

A EP 0 255 185 A (OPTICAL STORAGE INT) 3 1,3,9 February 1988 * column 4, line 25 - column 5, line 57; figures *

A FP 0 ?44 13? A (SONY CORP) 4 November 1987 1.3.9 * page 5, line 8 - page 6 line 20 * te=al™ * pagp Imp 10 - pagp 10, linp ?4; figures * G11B

A EP 0 343 844 A (SONY CORP) 29 November 1,3,9 1989 * column 4, line 42 - column 5, line 29; figure 1 *

A EP 0 218 231 A ( ) 15 April 1-4,9 1987 * abstract; figures *

A EP 0 142 411 A (HITACHI MAXELL) 22 May 1,3,9 1985 * page 7, line 22 - page 10, line 12; figures *

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The present search report has been drawn up for all claims Place of uarch Date of conpletioa of the search Examiner THE HAGUE 25 April 1997 Declat, M CATEGORY OF CITED DOCUMENTS T : theory or principle underlying the invention E : earlier patent document, but published on, or X : particularly relevant if taken alone after the filing date Y : particularly relevant if combined with another D : document cited in the application document of the same category L : document cited for other reasons A : technological background O : non-written disclosure & : member of the same patent family, corresponding P : intermediate document document

2 EP 0 691 650 A3

Patent Application Number J) European EUROPEAN SEARCH REPORT Office EP 95 11 4972

DOCUMENTS CONSIDERED TO BE RELEVANT Citation of document with indication, where appropriate, Relevant classimcauun ur i nr. Category of relevant passages to claim APPLICATION (lnt.CI.6) IP 0 137 965 A (HITACHI MAXELL ; HITACHI L.3,9 LTD (JP)) 24 April 1985 * page 10, line 13 - page 12, line 11; Figures *

A EP 0 336 637 A (HITACHI MAXELL) 11 October 1989

A EP 0 348 937 A (DAINIPPON PRINTING CO LTD) 3 January 1990

TECHNICAL FIELDS SEARCHED (lnt.CI.6)

The present search report has been drawn up for all claims Place of search Date of conpletioo of Ike searca THE HAGUE 25 April 1997 Declat, M CATEGORY OF CITED DOCUMENTS T : theory or principle underlying the invention E : earlier patent document, but published on, or X : particularly relevant if taken alone after the filing date Y : particularly relevant if combined with another D : document cited in the application document of the same category L : document cited for other reasons A : technological background O : non-written disclosure & : member of the same patent family, corresponding P : intermediate document document

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