Ink adhesion will be poor if the print surface is dirty. After loading the object, degrease the print surface using anhydrous ethanol or isopropyl alcohol.
Is the ambient temperature too low?
Low ambient temperatures in and around the machine, such as low room temperatures or where directly exposed to air-conditioner breezes, may cause poor ink adhesion. During printing, the ambient temperature should be set to 20 to 32°C (68 to 89.6°F; 22°C [71.6°F] or higher is recommended).
