Reliable contact pad arrangement on plastic print cartridge

A print cartridge comprising:

• a plastic print cartridge body which has been injection molded, said print cartridge body including a first side having a depressed valley along a middle portion of said first side running along a length of said first side due to said middle portion sinking during an injection molding process to form said print cartridge body;
• and
• a flexible circuit secured on at least said first side of said print cartridge body,
• said flexible circuit having contact pads formed thereon for contacting corresponding electrodes in an ink printer, said flexible circuit having conductive traces terminating in said contact pads for connection to a printhead,
• said flexible circuit having a width larger than a width of said valley in said first side of said print cartridge body so as to extend to both sides of said valley and so that a middle portion of said flexible circuit running a length of said flexible circuit secured to said first side overlies said valley, none of said contact pads on said flexible circuit being formed in said middle portion of said flexible circuit where said flexible circuit overlies said valley.