A modified printer cartridge is disclosed. In one aspect, the modified printer cartridge includes a waste bin including a first location where at least a portion of a shutter fin has been removed; and a new shutter fin attached to the waste bin at a second location, the second location differing from the first location, wherein, before the shutter fin was removed, the shutter fin was positioned to engage a shutter of a first type of printer, and wherein the new shutter fin is positioned to engage a laser shutter of a second type of printer.