Search results
Results from the WOW.Com Content Network
In older printers, a corona wire positioned parallel to the drum or, in more recent printers, a primary charge roller, projects an electrostatic charge onto the photoreceptor (otherwise named the photoconductor unit), a revolving photosensitive drum or belt, which is capable of holding an electrostatic charge on its surface while it is in the dark.
Essentially, a corona discharge is generated by a very thin wire 1 ⁄ 4 to 1 ⁄ 2 inch (6.35 to 12.7 mm) away from the photoconductor. A negative charge is placed on the wire, which will ionize the space between the wire and conductor, so electrons will be repelled and pushed away onto the conductor. The conductor is set on top of a ...
The purpose of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge. Corona rings are used on very high voltage power transmission insulators and switchgear , and on scientific research apparatus that generates high voltages.
During the 1980s, a convergence began in some high-end machines towards what came to be called a multi-function printer: a device that combined the roles of a photocopier, a fax machine, a scanner, and a computer network-connected printer. Low-end machines that can copy and print in color have increasingly dominated the home-office market as ...
Corona discharges represent a significant power loss for electric utilities. The corona discharge around a high-voltage coil Corona discharge from a spoon attached to the high-voltage terminal of a Tesla coil Large corona discharges (white) around conductors energized by a 1.05-million-volt transformer in a U.S. NIST laboratory in 1941
Ink-jet printers use cartridges or reservoirs of ink and a moving print-head, while laser printers use heated elements and toner. Generally, ink-jet printers can excel at color, and are often less ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Corona treatment (sometimes referred to as air plasma) is a surface modification technique that uses a low temperature corona discharge plasma to impart changes in the properties of a surface. The corona plasma is generated by the application of high voltage to an electrode that has a sharp tip. The plasma forms at the tip.