Patent ID: 7893952

Claim:
A print head assembly for a printer providing uniform pressure over a print face, the print head assembly comprising: a frame having a pair of opposite-facing side walls; a platen roller rotatably mounted between the side walls of the frame about an axis of rotation; a print head having a print face extending between ends of the print head, the print head being pivotally movable relative to the frame about a pivot axis parallel to the axis of rotation of the platen roller; and at least one biasing member located between the frame and the print head, the at least one biasing member urging the print head towards the pivot axis with a first force and also urging the print face towards the platen roller with a second force, the first force being greater than the second force such that the first force maintains the pivot axis of the print head and the second force applies a uniform pressure over a width of the print face.