Sheet heater, liquid discharge apparatus, and printer

A sheet heater, comprising:

• a first conveyance belt to convey a sheet on which a liquid has been discharged in a conveyance direction;
• a heater facing the first conveyance belt to heat the sheet conveyed by the first conveyance belt;
• a second conveyance belt disposed upstream of the first conveyance belt in the conveyance direction to convey the sheet to the first conveyance belt;
• a guide to guide the sheet from the second conveyance belt to the first conveyance belt;
• two or more rollers around which the first conveyance belt is wound;
• and
• a heating structure inside at least one of the two or more rollers to heat said at least one of the two or more rollers,
• wherein a surface temperature of the second conveyance belt is lower than a surface temperature of the first conveyance belt when the first conveyance belt and the second conveyance belt convey the sheet,
• the first conveyance belt and the second conveyance belt are separated from each other in the conveyance direction, and
• the guide is between the second conveyance belt and the first conveyance belt in the conveyance direction.

A liquid discharge apparatus, comprising:

• a liquid application structure to apply a liquid onto a sheet;
• a sheet heater comprising:
• a first conveyance belt to convey a sheet on which a liquid has been discharged in a conveyance direction,
• a heater facing the first conveyance belt to heat the sheet conveyed by the first conveyance belt, and
• a second conveyance belt disposed upstream of the first conveyance belt in the conveyance direction to convey the sheet to the first conveyance belt,
• wherein a surface temperature of the second conveyance belt is lower than a surface temperature of the first conveyance belt when the first conveyance belt and the second conveyance belt convey the sheet;
• a drum facing the liquid application structure and disposed upstream from the second conveyance belt in the conveyance direction;
• the drum configured to convey the sheet onto which the liquid has been applied by the liquid application structure toward the second conveyance belt;
• a transfer cylinder between the drum and the second conveyance belt to convey the sheet from the drum to the second conveyance belt;
• and
• a preheater facing the transfer cylinder to heat the sheet upstream of the second conveyance belt.