Patent ID: 9573364
Date: 2017-02-21
CPC Classifications: B41J

Claim:
1. A head-driving method, comprising: a nozzle control data output step of outputting, to a plurality of head modules arranged in a recording head, nozzle control data for controlling an ejecting operation of nozzles in each of the head modules via a data bus shared between the plurality of head modules with the data being switched sequentially every bit; a nozzle control data setting step of setting the nozzle control data for each head module to be supplied via the data bus to each of the head modules as nozzle data for each of the head modules by outputting a data latch signal at a timing depending on each of the head modules; a driving step of outputting a drive voltage signal to an ejection energy generating element for ejecting liquid in each of the head modules to drive the ejection energy generating element; and a varying step of varying a phase of a transfer clock when transferring the nozzle control data to the head module correspondingly to every head module.