Patent ID: 8668298
Filing Date: 2014-03-11
Classification: B41J

Abstract:
1. A method to improve print quality of an ink printer, comprising the steps of: printing image points on a recording medium by ejecting corresponding ink printing droplets of predetermined volume by means of a stationary ink print head via a stationary nozzle corresponding to an image to be printed on said recording medium moving beneath the stationary print head; determining a time duration since a last ejection of an ink printing droplet from the same stationary nozzle during printing; and increasing a volume of a next ink droplet to be ejected by the same nozzle during printing depending on said determined time duration such that the next ink droplet having increased viscosity compared to a previous droplet from the same nozzle lands on the recording medium earlier than an uncompensated droplet from that same nozzle since said next ink printing droplet of increased volume is generated more quickly in the nozzle and due to said increased volume flies more quickly to the recording medium than would the uncompensated droplet, said increased volume being selected such that a printed image point on said recording medium created by said next increased volume droplet is closer to an intended desired line formed by other printed image points.