Portable printer having automatic print alignment

摘要: A portable printer for printing on a roll of paper or label stock is provided having automatic print alignment with the width roll. The has housing compartment receiving roll, cover to access and centering mechanism two rotatable spindle members in engageable opposing ends roll's tubular core, pair racks each coupled one members, other by gear, enable move opposite directions respect center between members. position optically, magnetically, electro-mechanically encoded sensor reads mechanism. controller automatically aligns accordance read sensor, thereby preventing outside from may be locked when closed prevent movement thereto. removable RF communication module host terminal computer system.