Patent ID: 8371686
Filing Date: 2013-02-12
Classification: B41J

Abstract:
1. A liquid ejecting apparatus comprising: a liquid ejecting head having nozzles through which liquid is ejected; a liquid containing member that contains liquid to be supplied to the liquid ejecting head; a pressurizing unit that pressurizes liquid contained in the liquid containing member and pumps the liquid to the liquid ejecting head through a liquid supply channel; a filter chamber provided upstream of the liquid ejecting head and having a filter that filters liquid supplied from the liquid containing member through the liquid supply channel and an upstream side space formed upstream of the filter; and a pressure adjustment unit provided between the filter chamber and the liquid ejecting head and having a pressure adjustment valve that depressurizes liquid from the filter chamber; wherein the filter has holes whose size is set to ½ of a minimum inner diameter of the nozzle or lower, a pressure from the pressurizing unit is adjusted to a value that permits air bubbles in the upstream side space to pass through the filter, and air bubbles have a size smaller than the minimum inner diameter of the nozzle after passing through the filter and being depressurized by the pressure adjustment unit.