Brother on Tuesday announced the release of two new laser printers, the HL-4040CDN and the MFC-9450CDN all-in-one. Both use an automatic duplex printing feature for reduced paper use that will print on both sides of a page. The HL-4040CDN directly replaces Brother's existing HL-4040CN, sharing many of its features, including 21ppm print speeds for black and white and color pages as well as maximum
