American TonerServ (ATS) may be headed for bankruptcy.This marks a reversal for the Rohnert Park, CA-based toner cartridge remanufacturer, which was on an acquisition spree back in late 2007 2008, scooping up iPrint Technologies, Image Technology Products, Mid-America Environmental, Pendl Companies, and Tonertype. In the first nine months of 2010, ATS had reported record revenue