Fixing device capable of fixing frame covering heating unit

A fixing device comprising:

• a heating unit configured to heat toner carried by a recording medium;
• a pressure unit configured to pressurize the heating unit to form a nip portion with the heating unit and configured to fix a toner image onto the recording medium at the nip portion with the heating unit;
• a first frame configured to move to a first position where the heating unit is exposed and to move to a second position where the heating unit is covered;
• a second frame configured to rotatably support the pressure unit;
• an urging member configured to urge the heating unit to position the heating unit;
• a support member configured to support one end of the urging member;
• and
• a fixing member configured to fix the support member to the fixing device;
• wherein the urging member urges the heating unit when the fixing member fixes the support member to the fixing device, and
• wherein the first frame is fixed to the second frame by the fixing member fixing the support member after the first frame is moved from the first position to the second position.