Patent ID: 7407255
Filing Date: 2008-08-05
Classification: B41J

Abstract:
1. A method of testing a droplet discharge device, comprising: a first step of setting a test sheet at a first distance from the droplet discharge device; a second step of discharging at least one droplet toward the test sheet set in the first step from a nozzle formed in the droplet discharge device to form at least one first dot on the test sheet; a third step of setting a test sheet at a second distance from the droplet discharge device, the second distance being different from the first distance; a fourth step of discharging at least one droplet toward the test sheet set in the third step from the nozzle to form at least one second dot on the test sheet; and a fifth step of calculating at least either position error of the nozzle or discharge angle error of the nozzle from the position of the first dot, the position of the second dot, the first distance and the second distance.