The image forming apparatus includes a chassis, a feed roller, and a press roller. The flexible drive cable assembly includes an elongate flexible core for transmitting movement from a first end of the core to a second end of the core and an elongate flexible casing encircling a longitudinal length of the core and having a unitary connector. The hook comprises a unitary structure. The etching also removes at least a portion of the barrier 230 layer at the bottom of the opening 130.