(19)
(11) EP 0 503 497 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.12.1992 Bulletin 1992/51

(43) Date of publication A2:
16.09.1992 Bulletin 1992/38

(21) Application number: 92103871.7

(22) Date of filing: 06.03.1992
(51) International Patent Classification (IPC)5: B41J 2/165, B41J 2/175
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE

(30) Priority: 08.03.1991 JP 43653/91
08.03.1991 JP 43666/91
15.07.1991 JP 173959/91
02.03.1992 JP 44771/91

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Higuma, Masahiko, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Watanabe, Takashi, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Ishinaga, Hiroyuki, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Kawamura, Takahisa, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Karita, Seiichiro, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Yamanaka, Akihiro, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Ohkuma, Norio, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Goto, Akira, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Arashima, Teruo, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Sato, Motoaki, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)
  • Saito, Megumi, c/o Canon Kabushiki Kaisha
    Ohta-ku, Tokyo 146 (JP)

(74) Representative: Tiedtke, Harro, Dipl.-Ing. 
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4
80336 München
80336 München (DE)


(56) References cited: : 
   
       


    (54) Sealing member for ink container portion and recording head employing the same


    (57) An adhesive sheet-type sealing member (1) is suitably used for protecting ink-ejecting nozzles (30) or a communication hole of an ink-jet recording head (12) during transportation or storage. The sealing member (1) exhibits a yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ±10% according to JIS-K-7113 and/or exhibits a folding load of not more than 0.10 g/cm for a specimen of 10 mm wide with a free length of 10 mm from the end of a specimen holder measured on the center of an electronic balance placed at a position 5 mm apart from the end of the specimen holder.






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