A technology is provided that suppresses a noise that an image forming apparatus makes in the course of an operation thereof from interfering with a user who is watching television. When a printer 203 receives a print command, the printer 203 performs a print job as per a normal mode if a commercial...http://www.google.com.tw/patents/US8085347?utm_source=gb-gplus-share專利 US8085347 - Image forming apparatus and control method thereof
