Fixing device and printer

The invention provides a fixing device and a printer, the fixing device comprises a paper feeding plate, a fixing roller, a pressure roller, a plurality of heating devices, a scanning device and a controller, the paper feeding plate is used for placing paper, and the fixing roller is assembled above the paper feeding plate; the pressurizing roller is assembled below the paper feeding plate, is symmetrically distributed with the fixing roller by taking the paper feeding plate as a reference surface, and is used for being matched with the fixing roller to apply pressure to paper; the plurality of heating devices are arranged in the fixing roller; the scanning device is arranged above the paper feeding plate, is arranged at the upstream of the paper feeding direction relative to the fixing roller, and is used for scanning an image and generating an image signal; the controller is electrically connected with the heating devices and the scanning device and used for determining a powdered ink area with powdered ink