Image heater

An imaging apparatus comprising:

• a transfer device to form a toner image on a recording medium;
• and
• an image heating device to heat the toner image formed on the recording medium,
• wherein the image heating device includes:
• an endless belt having an outer peripheral surface to contact the toner image on the recording medium;
• a driving roller to drive the endless belt to rotate in a rotational direction;
• a pressing member to press the endless belt against the driving roller in a contact width of the endless belt;
• and
• three electrode portions including a first electrode portion, a second electrode portion, and a third electrode portion that are in contact with the endless belt, and spaced apart in a movement direction to form a first heat generation region between the first electrode portion and the second electrode portion, and to form a second heat generation region between the second electrode portion and the third electrode portion,
• wherein the second heat generation region is located outside the contact width;
• and
• wherein the endless belt includes a fixing region located along the contact width to generate heat to fix the toner image onto the recording medium during a fixing operation, a glossing region located downstream the fixing region to form a gloss on the image having been fixed during a gloss application operation, and a peeling region located downstream the glossing region to peel off the recording medium from the endless belt.

An imaging apparatus comprising:

• a toner container to accommodate a toner that includes toner base particles and inorganic fine particles containing a peeling auxiliary agent;
• a transfer device to transfer the toner to form a toner image on a recording medium;
• and
• an image heating device to heat the toner image formed on the recording medium, wherein the image heating device includes:
• an endless belt having an outer peripheral surface to contact the toner image on the recording medium, the endless belt comprising a contact width between a pressing member and a driving roller of the image heating device;
• three electrode portions including a first electrode portion, a second electrode portion, and a third electrode portion that are in contact with the endless belt, and spaced apart in a movement direction to form a first heat generation region between the first electrode portion and the second electrode portion, and to form a second heat generation region between the second electrode portion and the third electrode portion;
• and
• a peeling roller around which the endless belt is wound to form a curvature variation in the endless belt, so as to cause the recording medium to peel-off from the endless belt during a heat removal operation,
• wherein a portion of the peeling auxiliary agent included in the toner of the toner image is caused to remain on the outer peripheral surface of the endless belt;
• and
• wherein the second heat generation region is located outside the contact width.