WEB CLEANING SYSTEM
Original Publication Date: 1979-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
In various processes wherein a liquid based particulate layer is utilized to form an image, a reusable substrate (belt) upon which the image has been formed is desirably employed. In many of the systems, the particles to be cleaned from the belt are electrically charged and adhered tightly to the belt by electrostatic forces. In the attached figure, there is illustrated a device which continuously cleans such a system and, in turn, is self-cleaning for continuous use. In the figure, belt 1 carries the remains of imaging material after image transfer has taken place. The belt 1 is brought into contact with a cleaning blade 3 and a cleaning roller 5. The counterrotating roller 5 (such as foam) dislodges most of the particles from belt 1. The remaining particles are scraped from belt 1 by blade 3. A typical blade is a polyurethane or rubber blade which will not damage belt 1. Blade 3 is positioned in the nip region as shown in the figure, so that accumulations of particles in front of blade 3 are continuously cleaned by foam roller 5, which is rotating in a direction opposite to the direction of belt 1. Foam roller 5 is then cleaned with a series of vibrating wires 7. Wires 7 are positioned such that they contact roller 5 very lightly causing wires 7 to vibrate, and thereby both cleaning roller 5 and dislodging accumulations of particles (inks) from wires 7. Because the device is self-cleaning, it is capable of continuous use.