IP Library Granted Patent US 10,331,051
Granted Patent B2
US 10,331,051 · App. 15/898,687 · Granted Jun 25, 2019

Method to make a photoconductor having an overcoat with tetrafunctional radical polymerizable charge transport molecule

Inventors: Weimei Luo (Louisville, CO); David Glenn Black (Broomfield, CO); Mark Thomas Bellino (Loveland, CO)
Assignee: LEXMARK INTERNATIONAL, INC.
G03G5/0525C07C13/567C07C57/50G03G5/0614G03G5/071G03G5/14717G03G5/14734G03G7/0006
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,331,051
App. No.
15/898,687
Granted
Jun 25, 2019
Kind
B2
Abstract

A charge transport molecule containing four radical polymerizable functional groups used in an overcoat for an organic photoconductor drum of an electrophotographic image forming device is provided. The charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R 1 and R 2 contain a spacer group and a radical polymerizable functional group, R 3 and R 4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R 5 and R 6 contain a spacer group and a radical polymerizable functional group.

Claims (2)

1. A charge transport molecule containing four radical polymerizable functional groups as exemplified below:

where R 1 and R 2 contain a spacer group and a radical polymerizable functional group, R 3 and R 4 are a non-radical polymerizable functional group, and R 5 and R 6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R 1 , R 2 , R 5 and R 6 is an ethyl group and the radical polymerizable functional group of R 1 , R 2 , R 5 and R 6 is an acrylate group.

Assignments (5)
SECURITY INTEREST Recorded Jan 5, 2026
From: LEXMARK INTERNATIONAL, INC.
To: BANK TRUST COMPANY, NATIONAL ASSOCIATION
Reel/Frame 074202/0192 →
SECURITY INTEREST Recorded Jan 5, 2026
From: LEXMARK INTERNATIONAL, INC.
To: BANK TRUST COMPANY, NATIONAL ASSOCIATION
Reel/Frame 074202/0293 →
SECURITY INTEREST Recorded Sep 23, 2025
From: LEXMARK INTERNATIONAL, INC.
To: CITIBANK, N.A.
Reel/Frame 073007/0118 →
SECURITY INTEREST Recorded Sep 23, 2025
From: LEXMARK INTERNATIONAL, INC.
To: JEFFERIES FINANCE LLC
Reel/Frame 073007/0346 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 19, 2018
From: LUO, WEIMEI; BLACK, DAVID GLENN; BELLINO, MARK THOMAS
To: LEXMARK INTERNATIONAL, INC.
Reel/Frame 044963/0242 →
Continuity (3)
Continuation 14983928 · Dec 30, 2015
Continuation 14145309 · Dec 31, 2013
Related Publication 20180173122A1 · Jun 21, 2018