Global Patent Index - EP 1074896 A1

EP 1074896 A1 2001-02-07 - Nip width converting mechanism for use in a fusing apparatus

Title (en)

Nip width converting mechanism for use in a fusing apparatus

Title (de)

Vorrichtung zum Ändern der Länge einer Kontaktzone in einer Fixiervorrichtung

Title (fr)

Mécanisme pour changer la largeur de la zone de contact à utiliser dans un appareil de fusion

Publication

EP 1074896 A1 (EN)

Application

EP 00306139 A

Priority

  • US 14701299 P
  • US 54409300 A

Abstract (en)

A fusing nip width converting mechanism (100) and a compact long nip width fusing apparatus including such a mechanism are disclosed for use in a reproduction machine. The compact long nip width fusing apparatus (100) includes a rotatable fuser roller (96) and a rotatable pressure roller (98) forming a roller nip (99) against one another. The fusing nip width converting mechanism (100) includes a first belt directing roller (104) for positioning on an exit side of the roller nip (99), a second belt directing roller (102) for positioning on an entrance side of the roller nip (99), and an endless belt member (106) mounted over the first belt directing roller (104), through the roller nip (99), and over the second belt directing roller (102), thus forming a closed loop. The closed loop of the belt member (106) as mounted is pinched and deflected by the rotatable fuser roller (96) and the rotatable pressure roller (98) within the roller nip (99), and the closed loop as pinched forms a long width fusing nip (110) against the rotatable fuser roller (96), thereby increasing fusing dwell time and fusing thermal efficiency, relative to the roller nip. <IMAGE>

IPC 1-7 (main, further and additional classification)

G03G 15/20

IPC 8 full level (invention and additional information)

G03G 15/20 (2006.01)

CPC (invention and additional information)

G03G 15/2064 (2013.01); G03G 2215/2012 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1074896 A1 20010207; BR 0003344 A 20010313; JP 2001075410 A 20010323; MX PA00007255 A 20020424

INPADOC legal status


2001-08-01 [18W] WITHDRAWN

- Date of withdrawal: 20010601

2001-02-07 [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

2001-02-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI