Patent ID: 8047640
Filing Date: 2011-11-01
Classification: B41J

Abstract:
1. An inkjet printer system comprising: a print head configured to eject ink; a sub tank connected to the print head and having a pressure control hole; a pressure controller connected to the pressure control hole to control an inner pressure of the sub tank; and a check valve provided at the pressure control hole to prevent ink in the sub tank from flowing into the pressure control hole from the sub tank, wherein the check valve comprises a float valve member to float in the ink, and a supporting member supporting the float valve member to be capable of closing the pressure control hole to prevent ink in the sub tank from flowing into the pressure control hole from the sub tank, wherein the pressure control hole is provided at an upper wall surface of the sub tank, wherein the supporting member surrounds the pressure control hole and extends downwardly from the upper wall surface, and wherein the float valve member is located below the pressure control hole.