Patent ID: 9085179
Filing Date: 2015-07-21
Classification: B41J

Abstract:
1. A printer comprising: a printhead that has a discharge nozzle for discharging liquid onto continuous paper and that is movable in a primary scanning direction; a tractor unit that is driven by a DC motor and conveys continuous paper toward the printhead in a secondary scanning direction substantially perpendicular to the primary scanning direction, wherein the tractor unit conveys the continuous paper at at least two different constant conveyance speeds when conveying the continuous paper so that a leading end of the continuous paper is set to a printing position of the printhead; and a load information measurement unit coupled with the tractor unit such that, when continuous paper is loaded in the tractor unit, the load information measurement unit drives the tractor unit at at least two different constant conveyance speeds in a conveyance direction and measures DC motor load information during conveyance, wherein the load information measurement unit measures the load information related to each of the at least two different constant conveyance speeds.