(12) International Application Status Report

Received at International Bureau: 21 October 2004 (21.10.2004)

Information valid as of: Not available

Report generated on: 23 January 2021 (23.01.2021)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2005/03853328 April 2005 (28.04.2005) Japanese (JA)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/JP2004/01464805 October 2004 (05.10.2004) Japanese (JA)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
2003-358024 (JP)17 October 2003 (17.10.2003) Priority document received (in compliance with PCT Rule 17.1)
2003-358330 (JP)17 October 2003 (17.10.2003) Priority document received (in compliance with PCT Rule 17.1)
2004-155165 (JP)25 May 2004 (25.05.2004) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
G03G 15/20 (2006.01); H05B 6/14 (2006.01)

(71) Applicant(s):
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 1006, Oaza Kadoma, Kadoma-shi Osaka 5718501 (JP) (for all designated states except US)
YASUDA, Akihiro [--/--]; () (for US only)
KATAKABE, Noboru [--/--]; () (for US only)
TAJIMA, Noriyuki [--/--]; () (for US only)
FUJIMOTO, Keisuke [--/--]; () (for US only)
IMAI, Masaru [--/--]; () (for US only)

(72) Inventor(s):
YASUDA, Akihiro
KATAKABE, Noboru
TAJIMA, Noriyuki
FUJIMOTO, Keisuke
IMAI, Masaru

(74) Agent(s):
WASHIDA, Kimihito; 5th Floor, Shintoshicenter Bldg., 24-1, Tsurumaki 1-chome, Tama-shi Tokyo 2060034 (JP)

(54) Title (EN): FIXING DEVICE
(54) Title (FR): DISPOSITIF DE FIXATION
(54) Title (JA): 定着装置

(57) Abstract:
(EN): A fixing device (200) using a heating device of an electromagnetic induction heating system, comprising an exciting device (230) generating magnetic fluxes, an opposed core (233) disposed oppositely to the exciting device (230), a fixing belt (210) induction-heated by the magnetic fluxes, and a magnetic shielding body (301) shielding a magnetic path (302) corresponding to the paper non-passage area of the fixing belt (210) between the exciting device (230) and the opposed core (233). Since the magnetic path passed between the exciting device (230) and the opposed core (233) is shielded by the magnetic shielding body (301), the overheat of the paper non-passage area of the fixing belt (210) can be prevented by effectively shielding the magnetic fluxes induction-heating the fixing belt (210).
(FR): L'invention concerne un dispositif de fixation (200) utilisant un dispositif chauffant d'un système chauffant à induction électromagnétique, comprenant un dispositif d'excitation (230) produisant des flux magnétiques, un noyau opposé (233) disposé face au dispositif d'excitation (230), une bande de fixation (210) chauffée par induction par les flux magnétiques, ainsi qu'un corps de protection contre les champs magnétiques (301) protégeant une ligne de force (302) correspondant à la zone par laquelle ne passe pas le papier de la bande de fixation (210) entre le dispositif d'excitation (230) et le noyau opposé (233). Du fait que la ligne de force passe entre le dispositif d'excitation (230) et que le noyau opposé (233) est protégé par le corps de protection contre les champs magnétiques (301), on peut éviter une surchauffe au niveau de la zone par laquelle ne passe pas le papier de la bande de fixation (210) en protégeant efficacement les flux magnétiques chauffant par induction la bande de fixation (210).
(JA):  電磁誘導加熱方式の加熱装置を用いた定着装置200において、磁束を発生する励磁装置230と、励磁装置230に対向して配置された対向コア233と、前記磁束により誘導加熱される定着ベルト210と、励磁装置230と対向コア233との間の定着ベルト210の非通紙領域に対応する磁路302を遮断する磁気遮蔽体301と、を備える。磁気遮蔽体301により励磁装置230と対向コア233との間を通る磁路を遮断することにより、定着ベルト210を誘導加熱する磁束を効果的に遮蔽して、定着ベルト210の非通紙領域の過昇温を防止する。

International search report:
Received at International Bureau: 04 January 2005 (04.01.2005) [JP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) Designated States:
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
European Patent Office (EPO) : AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR
African Intellectual Property Organization (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, MD, RU, TJ, TM