Invention Grant
- Patent Title: Overcoat formulation for long-life electrophotographic photoconductors and method for making the same
- Patent Title (中): 长寿命电子照相感光体的外涂层配方及其制造方法
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Application No.: US14145107Application Date: 2013-12-31
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Publication No.: US09448497B2Publication Date: 2016-09-20
- Inventor: Mark Thomas Bellino , Gerald Hugh Ciecior , Douglas Jeffrey Harris , Weimei Luo , Brian David Munson , Dat Quoc Nguyen , Scott Daniel Reeves , Tanya Yvonne Thames
- Applicant: Lexmark International, Inc.
- Applicant Address: US KY Lexington
- Assignee: LEXMARK INTERNATIONAL, INC.
- Current Assignee: LEXMARK INTERNATIONAL, INC.
- Current Assignee Address: US KY Lexington
- Main IPC: G03G5/05
- IPC: G03G5/05 ; G03G5/147

Abstract:
An overcoat layer and method to make an overcoated photoconductor drum of an electrophotographic image forming device using irradiation such as with electron beam (EB) or ultraviolet (UV) light is provided. The photoconductor drum is then cured using EB dose of between 10 and 100 kiloGrays (kGy), preferably between 20 and 40 kGys or UV irradiation with an exposure of between 0.1 and 2 J/cm2. The unique overcoat layer of the present invention is formed having a biphasic morphology comprised of a highly cured crosslinked phase and a second phase enriched in uncured material. The desired amount of uncured uncrosslinked material found in the second phase of the biphasic structure, is between 2-70 wt % range, with particularly good combination of long-life and electrical performance when present at the 5-50 wt % level, and the best performance at the 15-40 wt % level. The biphasic morphology of the overcoat layer using the method of the present invention gives rise to the good wear rates while allowing rapid transport of the electrical charge and thus fast discharge properties of the photoconductor drum.
Public/Granted literature
- US20150185642A1 Overcoat Formulation for Long-Life Electrophotographic Photoconductors and Method for Making the Same Public/Granted day:2015-07-02
Information query
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