Patent ID: 8212851

Claim:
A portable printer comprising: a housing; a platen roller rotatably provided in the housing and configured to rotate to convey a label sheet having a base sheet and labels stuck to the base sheet; a thermal print head opposed to the platen roller and configured to apply printing to the labels of the label sheet conveyed by the platen roller; a pinch roller opposed to the platen roller on a downstream side of the thermal print head in a sheet conveying direction and configured to nip the base sheet in cooperation with the platen roller and rotate following the platen roller via the base sheet to convey the base sheet; a supporting shaft configured to support the pinch roller to be capable of rotating following the platen roller; a shaft holder configured to hold the supporting shaft; a removing and inserting section provided in the housing and configured to hold the shaft holder to be removable therefrom and insertable thereinto; a pawl section provided in the shaft holder, configured to resiliently hook to the removing and inserting section while allowing the shaft holder to be displaced in a removing and inserting direction thereof when the shaft holder is inserted into the removing and inserting section, and capable of releasing the hooking; a member holding section provided in the housing; and an urging member detachably attachable to the member holding section, nipped by the member holding section and the supporting shaft, and configured to apply pressing force on the platen roller to the pinch roller.