| 摘要 |
Provided is an image forming apparatus avoiding possibility of sheet jam occurrence, and also maintains convenience for user. The apparatus is provided with plural stages detachably loaded therein, having a common carrying passage carrying a sheet from a lower stage, a sheet detection sensor that detects a sheet stored in stage, and plural searching patterns varying in priority levels in stage searching, and includes a stage searching part that, every time feeding from stage is performed, performs stage searching based on any one of the searching patterns, and a system control part that notifies stage searching part of detection result by sensor and stage specified as default, stage searching part selecting pattern according to detection result and default to perform stage searching, and system control part performing stage changeover based on priority levels in stage searching in pattern selected. |
| 主权项 |
1. An image forming apparatus, comprising
a plurality of paper feeding stages that are detachably loaded in the inside of a main body of the apparatus, having a common carrying passage that carries a paper sheet from a lower stage, a paper sheet detection sensor that detects a paper sheet stored in the paper feeding stage, and a processor, upon the processor executing a program, the processor operating as a paper feeding stage searching part that has a plurality of searching patterns that vary in levels of priority in paper stage searching operation, and that, every time paper sheet feeding from the paper feeding stage is performed, performs a paper feeding stage searching operation based on any one of the searching patterns, and a system control part that notifies the paper feeding stage searching part of a detection result by the paper sheet detection sensor and the paper feeding stage that is specified as the default, upon the processor executing a program, the processor selecting, as the paper feeding stage searching part, the searching pattern according to the detection result and the default to perform a feeding stage searching operation, and performing, as the system control part, changeover of the paper feeding stages based on the levels of priority in paper feeding stage searching operation in the searching pattern that has been selected. |
