Patent ID: 8287106
Filing Date: 2012-10-16
Classification: B41J

Abstract:
1. A liquid ejecting apparatus for ejecting liquid from an ejection head, the liquid being supplied from a liquid supplying source, the liquid ejecting apparatus comprising: a carriage having the ejection head including: a liquid channel configured for flowing the liquid from the liquid supplying source to the ejection head, the liquid channel extending through a first carriage member, a second carriage member, a third carriage member, a fourth carriage member, and a fifth carriage member, the liquid channel including an input port for receiving the liquid, the input port being formed in the first carriage member; a first gas recovery chamber formed in the second carriage member, the second carriage member being below the first carriage member in the liquid flow direction; an upstream gas trap chamber which is formed in the liquid channel and which is positioned inside the first gas recovery chamber, the upstream gas trap chamber expanding the width of the liquid channel from the first carriage member to the third carriage member, the third carriage member being below the second carriage member in the liquid flow direction, the upstream gas trap chamber expanding in a downstream direction such that the upstream gas trap chamber is wider at a downstream opening than at an upstream opening, the first gas recovery chamber having one or more gas permeable walls defining at least a portion of the upstream gas trap chamber and defining a portion of the second carriage member; a pressure regulating valve which is provided in the liquid channel of the carriage, the pressure valve being formed in the third carriage member and regulating the pressure of the liquid flowing in the liquid channel, wherein the pressure regulating value is located at a downstream side of the downstream opening of the upstream gas trap chamber and an upstream side of an upstream opening of a downstream gas trap chamber; a second gas recovery chamber formed in the fourth carriage member, the fourth carriage member being below the third carriage member in the liquid flow direction; a downstream gas trap chamber which is formed in the liquid channel and which is positioned inside the second gas recovery chamber, the downstream gas trap chamber and expands expanding the width of the liquid channel from the third carriage member to the fifth carriage member, the fifth carriage member being below the fourth carriage member in the liquid flow direction, the downstream gas trap chamber expanding in a downstream direction such that the downstream gas trap chamber is wider at a downstream opening than at an upstream opening, the second gas recovery chamber having one or more gas permeable walls defining at least a portion of the downstream as tra chamber and defining a portion of the fourth carriage; a communication path defined by the third carriage member and extending from the first gas recovery chamber to the second gas recovery chamber; a carriage driver which drives the carriage; an attachment/detachment connection which is detachably connected to the gas recovery chamber according to a position of the carriage; and a depressurization unit which decreases a pressure of the gas recovery chamber to a pressure lower than that of the gas trap chamber via the attachment/detachment connection.