A machine core component, which is a universal part component for heater and fan manufacture, includes a core housing with a vertical structure having an air inlet at a lower end portion, an air outlet at an upper end portion, and an air duct formed between the air inlet and the air outlet; a driving motor and a wind wheel supported and received inside the core housing; and a heating element mounting window located at the air inlet for quick and easy installation of a heating element so that the machine core component can be used for fan or heater manufacture.

Disclosed herein is a method of sublimation printing, a heating system for sublimation printing and a printing device. The method of sublimation printing comprises generating an air flow through a print medium on which a printing substance is deposited and heating the air flow to a temperature at or above a sublimation temperature of the printing substance.

Disclosed is an apparatus to generate heated air to sublimate a sublimating printing substance. The apparatus comprises: a self-regulating heating element; an air retaining device to retain air in the apparatus for heating by the self regulating heating element; and an airflow generating device arranged selectively to urge heated air to leave the retaining device. Also disclosed is a method to sublimate a sublimating printing substance deposited on a printing medium and a system to produce printing content on a printing substrate using a sublimating printing substance.

A machine core component, which is a universal part component for heater and fan manufacture, includes a core housing with a vertical structure having an air inlet at a lower end portion, an air outlet at an upper end portion, and an air duct formed between the air inlet and the air outlet; a driving motor and a wind wheel supported and received inside the core housing; and a heating element mounting window located at the air inlet for quick and easy installation of a heating element so that the machine core component can be used for fan or heater manufacture.