Patent ID: 9004661
Filing Date: 2015-04-14
Classification: B41J

Abstract:
1. An ink jet printing apparatus, comprising: a jet stack; a main ink reservoir in fluid communication with the jet stack, the main ink reservoir having: a wall separating the jet stack and the main ink reservoir, the wall including: ink located in the jet stack, the recirculation chamber, and the incoming ink chamber, wherein at least a portion of the ink located in the incoming ink chamber is moved to the jet stack and the ink in the jet stack is moved to the recirculation chamber when a vacuum is applied to the recirculation chamber vent, the ink moved from the jet stack to the recirculation chamber includes bubbles, and wherein the ink in the incoming ink chamber is moved to the jet stack and the ink in the jet stack is moved to the recirculation chamber when the vacuum is applied to the recirculation chamber vent and a pressure is applied to the incoming ink chamber, the one-way valve structured to be closed when the vacuum is applied to the recirculation chamber vent and the pressure is applied to the incoming ink chamber.