Brother has announced its new HL-3000 series of digital color printers, including the AirPrint-compatible HL-3140CW ($250) and HL-3170CDW ($280). Thanks to the AirPrint functionality, users will be able to print wirelessly from an iPad, iPhone, or iPod touch without installing a printer driver. The HL-3140CW offers color and black printing up to 19 ppm, up to 600x2400 dpi resolution, and support of wireless 802.11 b/g/n and USB 2.0 interfaces,…