Image fixing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsNobukazu Adachi, Yuzo Isoda, Toshio Miyamoto, Yohji Tomoyuki
Life of this patent
Estimating the term…
Abstract
An image fixing apparatus for fixing a toner image on an image supporting material. A guiding member for guiding the image supporting material is provided without contact to an image fixing rotatable member but with a predetermined small clearance. In order to maintain the predetermined clearance, spacers are provided at positions outside the maximum image forming region. The rotatable image fixing member is prevented from being damaged, and in addition, the image supporting material is prevented from being wrapped on the rotatable member.
Claims26
An image fixing apparatus, comprising:
- a fixing rotatable member for fixing a toner image on an image supporting material;
- and
- a separating guide for separating the image supporting material from said fixing rotatable member, said separating guide being disposed along a direction of a generating line of said fixing rotatable member with a predetermined gap from a surface of said fixing rotatable member,
- a contact portion contacting a surface of said fixing rotatable member to form the gap;
- wherein said contact portion partly overlaps with both a maximum sheet passage region and a non-sheet passage region.
An image fixing apparatus, comprising:
- a fixing rotatable member for fixing a toner image n an image supporting material;
- separating member for separating the image supporting material from said fixing rotatable member, said separating member being disposed along a direction of a generating line of said fixing rotatable member with a predetermined gap from a surface of said fixing rotatable member;
- wherein separating member has plural ribs for separating a leading end of said image supporting material and for guiding the thus separated image supporting material.
An image fixing apparatus, comprising:
- a fixing rotatable member for fixing a toner image on an image supporting material;
- bearing means for rotatably supporting said fixing rotatable member;
- and
- separating means for separating the image supporting material from said fixing rotatable member, said separating means being disposed along a direction of a generating line of said fixing rotatable member with a predetermined gap form a surface of said fixing rotatable member,
- wherein said separating means has a contact portion for contact with said bearing means to maintain the gap.
An image fixing apparatus, comprising:
- a fixing rotatable member for fixing a toner image on an image supporting material;
- separating guide for separating the image supporting material from said fixing rotatable member, said separating guide being disposed along a direction of a generating line of said fixing rotatable member with a predetermined gap form a surface of said fixing rotatable member,
- an urging member for urging said separating guide toward said fixing rotatable member;
- and
- a positioning portion for receiving an urging force from said urging member to position said separating guide;
- wherein three of such positioning portions are provided at a central position and end portions of said separating guide.
Dependencies are inferred from the claim text.