Fixing device and image forming apparatus

A fixing device comprising:

• a first rotating member that rotates;
• a second rotating member that extends side by side with the first rotating member, sandwiches a recording medium on which a toner image is formed between the second rotating member and the first rotating member, rotates together with the first rotating member, and heats the recording medium to fix the toner image on the recording medium;
• a heating device whose circumferential surface circularly moves while contacting an external circumferential surface of the second rotating member, the heating device heating the second rotating member;
• a temperature detecting device that is disposed to face the external circumferential surface of the second rotating member without contacting the external circumferential surface and detects a temperature of the external circumferential surface;
• a cleaning device that cleans the circumferential surface of the heating device, and is disposed between the heating device and the temperature detecting device;
• and
• a polishing member that is in contact with the external circumferential surface of the second rotating member between the heating device and the temperature detecting device and polishes the external circumferential surface,
• wherein the heating device is disposed upstream of the cleaning device, which is disposed upstream of the temperature detecting device.

An image forming apparatus comprising:

• a toner image forming unit that forms a toner image on a recording medium;
• a first rotating member that rotates;
• a second rotating member that extends side by side with the first rotating member, sandwiches the recording medium on which the toner image is formed thereon by the toner image forming unit between the second rotating member and the first rotating member, rotates together with the first rotating member, and heats the recording medium to fix the toner image on the recording medium;
• a heating device whose circumferential surface circularly moves while contacting an external circumferential surface of the second rotating member, the heating device heating the second rotating member;
• a temperature detecting device that is disposed to face the external circumferential surface of the second rotating member without contacting the external circumferential surface and detects temperature of the external circumferential surface;
• and
• a cleaning device that cleans the circumferential surface of the heating device, and is disposed between the heating device and the temperature detecting device,
• wherein the heating device is disposed upstream of the cleaning device, which is disposed upstream of the temperature detecting device.