Patent ID: 7131774

Claim:
A printer for printing between a print roller and a print head, comprising: a print head alignment system including: a print roller assembly having a print roller mounted thereon and at least one stop; a print head support assembly having a print head mounted thereon and at least one detent, a surface of said detent engaging a surface of said stop to maintain alignment of said print head with said print roller; an actuating assembly associated with one of said print head support assembly and said print roller assembly for movement thereof so as to back one of the detent and the stop away from the other of the detent and the stop before moving the one of said print head support assembly and said print roller assembly so as to provide an access space between said print head and said print roller for allowing print media to be removed and inserted; wherein the actuating assembly is connected to move said print head support assembly and operates to back said detent off of said stop before moving at least one side of the print head away from the print roller to provide the access space; wherein said print head support assembly includes a pivot frame pivotally attached toward one end to pivot about a pivot axis; wherein said pivot frame includes two spaced apart wheels rotatably attached thereto.