Fixing device including induction heating section having cover with opening rows, and image forming apparatus including the same

摘要

A fixing device includes a fixing member and an induction heating section. The fixing member fixes an image onto a sheet. The induction heating section inductively heats the fixing member. The induction heating section includes an annular coil and a cover. The annular coil is elongated in a direction perpendicular to a conveyance direction of the sheet. The cover has first, second, and third opening rows. The annular coil includes first and second linear sections. Both the first and second opening rows are located at a side closer to the first linear section than a center line of the annular coil in the longitudinal direction. The second opening row is located closer to the second linear section than the first opening row. The third opening row is located at a side closer to the second linear section than the center line.

主权项

1. A fixing device comprising:
a fixing member configured to fix an image onto a sheet; and an induction heating section configured to inductively heat the fixing member, the induction heating section including:
an annular coil elongated in a direction perpendicular to a conveyance direction of the sheet;an arched core section including a plurality of arched cores arranged in a longitudinal direction of the annular coil and disposed so as to straddle the annular coil; anda cover that covers the arched core section,the cover having:
a first opening row including a plurality of first openings arranged in the longitudinal direction of the annular coil;a second opening row including a plurality of second openings arranged in the longitudinal direction of the annular coil; anda third opening row including a plurality of third openings arranged in the longitudinal direction of the annular coil,the annular coil including:
a first linear section extending in the longitudinal direction of the annular coil; anda second linear section extending opposite to the first linear section, wherein both the first opening row and the second opening row are located at a side closer to the first linear section than a center line of the annular coil in the longitudinal direction, the second opening row is located closer to the second linear section than the first opening row, and the third opening row is located at a side closer to the second linear section than the center line.