Patent ID: 9291980
Filing Date: 2016-03-22
CPC Classification: B41J,B65H,G03G

Claim Text:
1. An image forming apparatus comprising: an image forming section for forming an image onto a paper sheet; a discharge section for discharging the paper sheet onto which the image forming section has formed the image; a paper receiving tray for receiving thereon the paper sheet discharged from the discharge section; a first detecting section for detecting a conveyance failure in the discharge section; a lever that protrudes from a side of the discharge section toward the paper receiving tray and is caused to swing by being pushed by a front edge of a paper sheet in the process of being discharged from the discharge section; a second detecting section that detects a swinging state of a tip portion of the lever from a first position to a second position, the tip portion being at the first position when the lever is not in the process of receiving an action of the paper sheet, the second position being farther from the paper receiving tray than the first position; and a decision section judging an occurrence factor in a conveyance failure to be a user-induced factor when the second detecting section detects a state in which the tip portion is at the first position when the first detecting section detects a conveyance failure, and judging the occurrence factor in the conveyance failure to be an image forming apparatus-induced factor when the second detecting section detects a state in which the tip portion is swung away from the first position when the first detecting section detects the conveyance failure.