Patent ID: 9446611
Filing Date: 2016-09-20
CPC Classification: B41J,G03G

Claim Text:
1. An image forming apparatus comprising: a plurality of paper feeding cassettes that are detachably loaded within an apparatus main body; a paper detecting sensor that detects a paper stored in the paper feeding cassettes; a detecting sensor that detects a paper conveyed along a conveyance path extending from the paper feeding cassettes; a paper feeding switching determination part that performs processing to confirm a state change in the paper feeding cassettes, after the elapse of a waiting time until a start of determination of whether or not switching of paper feeding is possible, when it is determined that the paper stored in the paper feeding cassettes runs out, based on an operating condition of the apparatus, a change in detection results by the paper detecting sensor, and detection results by the detecting sensor, and performs processing to determine whether or not the switching of paper feeding is possible; and a system control part that performs processing to control the switching of paper feeding based on determination results by the paper feeding switching determination part.