Sheet drying apparatus and image forming system provided therewith

A sheet drying apparatus comprising

• a first conveyance portion that conveys a sheet on which an image is formed with ink containing moisture;
• a drying portion arranged opposite the first conveyance portion, the drying portion heating and drying the sheet;
• a suction fan that sucks in air containing water vapor present in a drying space between the first conveyance portion and the drying portion;
• an exhaust portion that discharges the air sucked in by the suction fan;
• a first duct that communicates the drying space with the suction fan;
• and
• a second duct that communicates the suction fan with the exhaust portion,
• wherein
• the suction fan and the second duct are arranged downstream of the drying portion with respect to a conveyance direction of the sheet,
• downstream of the suction fan and the second duct with respect to the conveyance direction are arranged
• a separation fan that blows air to the sheet being conveyed by the first conveyance portion to separate the sheet from the first conveyance portion at a separation position,
• a separation duct that communicates the separation fan with the separation position,
• a cooling fan that blows ambient air to cool the suction fan, and
• a cooling duct that communicates the cooling fan with the suction fan, and
• the separation duct and the cooling duct are arranged so that at least parts thereof overlap with each other as viewed from a width direction horizontally orthogonal to the conveyance direction.