Patent ID: 7549728
Filing Date: 2009-06-23
Classification: B41J,B82Y,G06F,G06K,G11C,H04N

Abstract:
1. A micro-electromechanical ink ejection mechanism for an inkjet printer, the ink ejection mechanism comprising: a substrate that defines an ink ejection channel through which ink can be ejected; a drive circuitry layer positioned on the substrate; a wall extending from the substrate; an ink ejection member which, together with the wall and the substrate, defines an ink chamber into which ink can be supplied, the ink ejection member and the wall being positioned so that the ink chamber is in fluid communication with an inlet of the ink ejection channel; and an actuating device connected to the drive circuitry layer and configured to displace the ink ejection member reciprocally so that the volume of the ink chamber can be decreased and subsequently increased to eject ink through the ink ejection channel.