Patent ID: 8385797

Claim:
A fixing device, comprising: a first rotary member rotatively disposed on a rotary shaft; a second rotary member disposed opposite the first rotary member to form a nip between the first rotary member and the second rotary member through which a recording medium bearing a toner image passes; a first separation member rotatively provided on the rotary shaft of the first rotary member to separate the recording medium passing through the nip from the first rotary member; a recording medium type detector to detect characteristics of the recording medium to generate a recording medium type detection signal; a pressure adjuster operatively connected to the recording medium type detector to move at least one of the first rotary member and the second rotary member based on the recording medium type detection signal provided by the recording medium type detector to change pressure between the first rotary member and the second rotary member at the nip; and a rotation angle adjuster connected to the first separation member to change a rotation angle position of the first separation member, wherein the rotation angle adjuster includes: a driver to generate a driving force; a rotation gear rotatively mounted on the rotary shaft of the first rotary member and connected to the first separation member; and a transmission gear to engage the rotation gear and connected to the driver to transmit the driving force generated by the driver to the rotation gear, and wherein the first rotary member mounted with the rotation gear moves in an arc about a center of the transmission gear with respect to the second rotary member.