Patent ID: 8020978
Filing Date: 2011-09-20
Classification: B41J

Abstract:
1. A method for producing an ink jet recording cartridge provided with a recording element substrate for discharging ink in a direction perpendicular to an ink discharge port surface, an ink tank comprising a material including glass fiber and a lid comprising a material including glass fiber, the recording element substrate being attached to one side surface of the ink tank and the lid covering an opening portion provided on another side surface of the ink tank, facing to the one side surface, said method comprising: welding the lid to the opening portion of the ink tank to which the recording element substrate is attached, wherein the welding step is performed by a vibration welding device having a receiving jig provided with an attaching portion to which the ink tank is fixed so that the opening portion of the ink tank to which the recording element substrate is fixed faces outward, and a jig provided with an attaching portion to which the lid is fixed so that a jointing portion of the lid jointed to the opening portion of the ink tank faces outward, and wherein in a condition that the jig is close to the receiving jig and the opening of the ink tank is in contact under pressure with the lid, the jig and the receiving jig are relatively moved and vibrated to be welded in a direction along the ink discharge port surface of the recording element substrate with the same vibration width of entire areas which are in contact with each other.