Abstract: A thermal printer (10) includes a rotatable platen (34) having opposite shaft ends (122); a print head (30) extended parallel to the platen; a mounting bracket (76, 78, 84, 86) for supporting the print head adjacent the platen; an elongated beam spring (104) with opposite ends (106, 108); a fulcrum member (100, 102) extended from the mounting bracket to engage the beam spring between the ends; and cams (132-140) for engaging the opposite ends to deflect the beam spring and press the print head into engagement with the platen to define a nip for a dye donor web (31) and a receiver sheet (22).

Abstract: A thermal printer (10) is useful for printing onto a receiver sheet (22, 24, 26) having a leading edge and a trailing edge and includes an elongated rotatable platen (34); an elongated thermal print head (30) positioned parallel to the platen; a closed loop pathway (12, 14, 16) for recirculating the receiver sheet in a printing direction from the platen and back to the platen, the platen being positioned for rotation in the printing direction with at least a portion of the platen in the pathway to engage the receiver sheet or a dye donor web (31); a supply roll (28) of dye donor web positioned upstream of the print head; a mechanism (76-112, 132-142) for moving the print head into the pathway opposite the platen to press the print head into engagement with the dye donor web, the dye donor web into engagement with the receiver sheet, and the receiver sheet into engagement with the platen; a mechanism (180-188) for rotating the platen in the printing direction to move either the dye donor web or both the dye do

Abstract: A thermal printer (10) is useful for printing onto a receiver sheet (22, 24, 26) and includes an elongated rotatable platen (34); an elongated thermal print head (30) positioned parallel to the platen; a supply roll (28) of dye donor web (31) positioned upstream of the print head; a mechanism (76-112, 132-142) for pressing the print head into engagement with the dye donor web and, in an absence of a receiver sheet, for pressing the dye donor web into engagement with the platen; and a mechanism (180-188) for rotating the platen, while the print head is pressing the dye donor web against the platen, to move the dye donor web between the print head and the platen.