Patent ID: 7118199
Filing Date: 2006-10-10
Classification: B41J,H05K

Abstract:
1. A liquid jet recording head comprising: a recording element substrate which includes a recoding liquid discharge port, and includes a discharge energy generation element that generates a discharge energy; a flexible film wiring substrate which includes an opening for exposing the recording element substrate to an outside, and includes a plurality of lead electrodes projecting inward of the opening, the flexible film wiring substrate connected to the recording element substrate so as to apply an electrical signal to the discharge energy generation element; a plurality of electrode pads provided on the recording element substrate, the electrode pads electrically connected to the lead electrodes, respectively so as to electrically connect the recording element substrate to the flexible film wiring substrate; a dummy lead which is provided inward of the opening to protrude to be shorter than each of the lead electrodes, and which is not electrically connected to each of the electrode pad, the dummy lead provided to be adjacent to at least one lead electrode group comprising of a plurality of lead electrodes among the plurality of lead electrodes; and wherein a plurality of the recording element substrates are provided in the opening, and the dummy lead is provided correspondingly between end portions of the plurality of recording element substrates adjacent to each other.