Fixing device and image forming apparatus
OwnerHiroshi MATSUMOTOinventor
Life of this patent
Estimating the term…
Abstract
Disclosed is a fixing device including: a heating section; a pressure contact section to form a nip section with the heating device and to pressure a sheet so that the sheet contacts with the heating section; and a pressurizing section to add a pressurizing force to the sheet through the pressure contact section and to make the nip section be formed between the heating section and the pressure contact section; wherein the pressurizing section adds the higher pressurizing force to an upstream portion and a downstream portion of the nip section than the pressurizing force added to a central portion of the nip section in a sheet conveying direction, and adds the higher pressurizing force to the downstream portion than the pressurizing force added to the upstream portion.
Claims10
A fixing device comprising:
- a heating section;
- a pressure contact section to form a nip section with the heating device and to pressure a sheet so that the sheet contacts with the heating section;
- and
- a pressurizing section to add a pressurizing force to the sheet through the pressure contact section and to make the nip section be formed between the heating section and the pressure contact section;
- wherein the pressurizing section adds the higher pressurizing force to an upstream portion and a downstream portion of the nip section than the pressurizing force added to a central portion of the nip section in a sheet conveying direction, and adds the higher pressurizing force to the downstream portion than the pressurizing force added to the upstream portion.
An image forming apparatus comprising:
- an image forming section to form a toner image on an image carrier with a toner;
- a sheet conveying section to convey a sheet;
- a transferring section to transfer the toner image on the image carrier on the sheet conveyed by the sheet conveying section;
- and
- a fixing device to fix the toner image transferred on the sheet, wherein
- the fixing device including:
- a heating section;
- a pressure contact section to form a nip section with the heating device and to pressure the sheet so that the sheet contacts with the heating section;
- and
- a pressurizing section to add a pressurizing force to the sheet through the pressure contact section and to make the nip section be formed between the heating section and the pressure contact section, and
- the pressurizing section adds the higher pressurizing force to an upstream portion and a downstream portion of the nip section than the pressurizing force added to a central portion of the nip section in a sheet conveying direction, and adds the higher pressurizing force to the downstream portion than the pressurizing force added to the upstream portion.
Dependencies are inferred from the claim text.