THERMOPLASTIC COMPOSITION FOR CARBON BLACK ELECTRODE
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
Disclosed is a process for preparing a hole-injecting electrode, which could be useful in various overcoated photoreceptor devices. This process involves embedding carbon black in a thermoplastic polyurethane, which is not cross-linked, and drying the resultant materials at a specific temperature such as 180'F. In one embodiment, the carbon black electrode is prepared by ball milling a dispersion of 6.5 grams of Estane 5701 F-1 (a polyurethane commerically available from B. F. Goodrich Chemical Company), 5.4 grams of Monarch 1300 carbon black, 32.5 mils of acetone and 32.5 mils of tetrahydrofuran in a 4 ounce bottle for 22 hours. The dispersion was then coated on a 5 mil Mylar substrate with a 1.5 mil Bird applicator and allowed to dry in an oven at 180°F for fifteen minutes, resulting in a carbon black electrode coated on a Mylar substrate.