Heating apparatus, image forming apparatus, and liquid discharge apparatus

A heating apparatus comprising:

• a heating roller having a heat source inside;
• and
• an end holder in which a portion of the heat source is disposed,
• the end holder rotatably holding an axial end of the heating roller;
• and
• a temperature sensor unit having a temperature sensor inside to detect a temperature of the heating roller,
• air is supplied to inside the temperature unit, and
• wherein the end holder has an air inlet opening through which air is supplied into the end holder and an air outlet opening through which air is ejected outside from inside the end holder,
• wherein the air inlet opening and the air outlet opening are disposed in a direction intersecting with an axial direction of the heating roller with respect to the heat source.

An image forming apparatus comprising:

• an image forming device configured to form an image on a sheet;
• and
• a heating apparatus configured to heat the sheet, the heating apparatus including
• a heating roller having a heat source inside,
• an end holder in which a portion of the heat source is disposed, the end holder holding an axial end of the heating roller rotatably,
• a temperature sensor unit having a temperature sensor inside to detect a temperature of the heating roller, and
• an air supply device configured to supply air to both inside of the end holder and inside of the temperature sensor unit,
• wherein the air supply device supplies air into the end holder in a direction intersecting with an axial direction of the heating roller.