Image forming apparatus, protectant applicator and process cartridge
US8374537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Jun 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus, including an image bearer; and a protectant applicator applying a protectant including zinc stearate and zinc palmitate to the surface thereof, wherein an average amount of the protectant adhering thereto is from 0.4 to 2.0 μg/cm2 after 500 images are produced, and wherein the following relationships are satisfied:X=Sb/Sa wherein X represents an index of the amount of the protectant adhering at an arbitrary point thereon; Sa represents a peak area in a wavenumber domain of from 1,765 to 1,786 cm−1 in an infrared absorption spectrum; and Sb represents a peak area in a wavenumber domain of from 1,533 to 1,547 cm−1, andΔXi/Xave<0.3 wherein Xi represent the indices X at n-pieces of the arbitrary points in an image forming area thereof along its longitudinal direction; Xave represents an average of the n-pieces of Xi; and ΔXi represents a variation of Xi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.