| 摘要 |
A fixing device is provided with a heat roller ( 18 ) and a pressure roller ( 19 ) having a shaft ( 24 ) and an elastic layer ( 25 ) formed on a periphery thereof and being in pressurized contact with the heat roller ( 18 ). A concave region ( 25 b), formed in an approximate arc shape in cross-section, is arranged on an end face ( 25 a) of the elastic layer ( 25 ) in a longitudinal direction (X) of the pressure roller ( 19 ). Accordingly, even when the pressure roller ( 19 ) is in pressurized contact with the heat roller ( 18 ), since the concave region ( 25 b) deforms to an approximately plane shape only, and the end face ( 25 a) does not protrude outwards, the occurrence of cracking in the elastic layer ( 25 ) of the pressure roller ( 19 ) can be avoided. |
