Patent ID: 7391428
Filing Date: 2008-06-24
Classification: B41J

Abstract:
1. A thermal image forming apparatus comprising: an image forming unit including a thermal printhead and a platen that face each other and are elastically biased towards each other; a cassette including a knock-up plate on which a medium is stacked; a pickup roller that picks up the medium from the cassette; a pickup unit that raises the knock-up plate in a direction in which the medium stacked on the knock-up plate contacts the pickup roller and lowers the knock-up plate in a direction in which the medium is separated from the pickup roller; and a thermal printhead moving unit that moves the thermal printhead to a contact position that contacts the platen, a first open position that is separated from the platen by a first gap, and a second open position that is separated from the platen by a second gap.