EP 0770935 A2 19970502 - Fixing device
Title (en)
Fixing device
Title (de)
Fixiervorrichtung
Title (fr)
Dispositif de fixage
Publication
Application
Priority
JP 27894495 A 19951026
Abstract (en)
A heat-resistant sheet, which has slits formed therein, is provided between a fixing roller and a pressure member. The heat-resistant sheet, which has a thickness of 300 mu m, is coated with a synthetic resin material having superior toner-releasing and heat-resisting properties, or incorporates such a synthetic resin material inside thereof. Here, a recording material is transported between the fixing roller and the heat-resistant sheet. As the surface temperature of the fixing roller increases, the heat-resistant sheet starts expanding gradually, causing its surface to be deflected. However, when the fixing roller reaches a set temperature, the expanded portion of the heat-resistant sheet and its surface deflection are all absorbed by the slits, and the slit width becomes zero. Therefore, it is possible to keep an optimal nip width while maintaining a proper applied pressure of the pressure member, without the necessity of having to use a heat-releasing device or increase the thickness of the heat-resistant sheet. As a result, a superior fixing operation is available by using the heat-resistant sheet having the slits. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 15/20 (2006.01)
CPC (source: EP)
G03G 15/2064 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0770935 A2 19970502; EP 0770935 A3 19981230; EP 0770935 B1 20020116; DE 69618534 D1 20020221; DE 69618534 T2 20020912
DOCDB simple family (application)
EP 96113570 A 19960823; DE 69618534 T 19960823