Patent ID: 7517067
Filing Date: 2009-04-14
Classification: B41J

Abstract:
1. An ink supply system comprising: an ink tank which contains ink, and a liquid chamber which is connected to the ink tank through a plurality of communication paths, and which supplies ink taken from the ink tank to a recording head, wherein the liquid chamber, except the plurality of communication paths and a connection section to the recording head, forms a substantially sealed space; wherein the liquid chamber is provided with a filter which partitions the inside of the liquid chamber into a first region at the side of the ink tank and a second region at the side of the recording head, and which forms a meniscus of ink which is broken by a pressure of gas in the second region; and wherein the filter includes an ink movement section through which the ink mainly in the first ink region is transferred to the second ink region, and a gas movement section in which the gas mainly in the second region is moved to the first region by movement of a meniscus of ink from the second region to the first region.