Fixing apparatus with pressing member having connected pores in elastic layer
US11137707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jun 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2054
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A fixing apparatus includes an endless belt, and a pressing member including a base body and an elastic layer formed on the base body. A plurality of pore portions connected to each other are provided in the elastic layer. In a case where a binary image is generated from a three-dimensional image of the elastic layer, a threshold value X μm corresponding to opening processing with which a number of pores derived from the pore portions takes a maximum value is obtained, and then pores derived from the pore portions in the elastic layer are extracted by performing opening processing with a threshold value of 2X μm, an average value of angles θ is 120° or larger and smaller than 150°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.