Patent ID: 9229380
Filing Date: 2016-01-05
CPC Classification: G03G

Claim Text:
1. A fixing device comprising: a first rotating member heated by a heat source; a second rotating member pressed against the first rotating member to form a fixing nip with the first rotating member along a conveying path of a recording medium; and a blowing unit configured to blow a cooling airflow toward the first rotating member, wherein an airflow route from the blowing unit to the first rotating member is arranged so as to cross the conveying path, and the airflow route includes: a duct connected with the blowing unit; and a communicating route arranged on an extended line of one end of the duct, and a part of the second rotating member is located in the communicating route, wherein the fixing nip is formed so that different sized recording mediums can pass therethrough, on a circumference face of the second rotating member, a first sheet passing region which a first size sheet passes and a first non-sheet passing region arranged outside the first sheet passing region which a second size sheet having a broader width than the first size sheet passes are formed, wherein at one side of the conveying path, a conveyance guide is provided so as to cross the airflow route, wherein the conveyance guide comprises an opening at a corresponding position to the first non-sheet passing region, and wherein the conveyance guide comprises a protrusion extending into the opening.