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First a special selenium coated, flat metal plate is positively charged. Light stones through a lens then projects an image of the page to be copied onto the charged plate. Whenever the light falls on the selenium plate the plate becomes a conductor and the positive charge is conducted away from the selenium by the metal plate.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoIt's electrical conductivity increases when light strikes on it, and it can convert light directly into electricity. This property of selenium is used in photocopiers.
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Can selenium rectifiers be rebuilt?
Selenium rectifiers, with their metal fins and long lived application in battery chargers and in tube type television sets are not intended to be repaired. Once a rectifier plate becomes damaged or it is burnt (unmistakable stink), the entire assembly should be replaced.
What bonds with gold?
1. As a metal gold has metallic bonds. 2. Gold can react with sulfur, selenium, chlorine etc.
A astrolabe is a star map drawn on a metal plate?
Yes; An astrolabe is a star map drawn on a metal plate.
Is there metal involed in plate tectonics?
No.
What is a metal or plastic plate placed over the keyboard?
keyguard
How does a leser printer works?
A laser printer is basically a xerographic type photocopier, except instead of a glass plate and light source scanner to paint the image on the selenium drum, it uses a laser to write the image directly on the selenium drum. Everything else is the same.
What is steam made of?
The sole plate (the metal part) is made out of an aluminum alloy often coated in Teflon... Not sure bout the plastic parts :/
What is steam iron made of?
The sole plate (the metal part) is made out of an aluminum alloy often coated in teflon... Not sure bout the plastic parts :/
Can selenium rectifiers be rebuilt?
Selenium rectifiers, with their metal fins and long lived application in battery chargers and in tube type television sets are not intended to be repaired. Once a rectifier plate becomes damaged or it is burnt (unmistakable stink), the entire assembly should be replaced.
What does a metal plate in the skull do?
what are the advantages of a metal plate
What does inlaid silver plate mean?
Inlaid silver has two definitions. It is can be used to refer to a metal that is coated with silver. It can also mean a piece of silver that is embedded in another substance.
What bonds with gold?
1. As a metal gold has metallic bonds. 2. Gold can react with sulfur, selenium, chlorine etc.
What is the component of the coating on the pre-coated TLC plate?
silica or alumina
How does a xeromammogram differ from a mammogram?
A xeromammogram is an image produced by the process of xeromammography, recording an X-ray image on a coated metal plate, using low-energy photon beams, and a long exposure time.
How do you use ferrotype in a sentence?
Photographic film were not the first material used to record pictures. In the early days, metal plates coated with light sensitive chemicals were loaded into the camera. The first plates were made of copper over coated with silver. Latter sheet metal plates over coated with light senitive chemicals replaced the copper/silver plate. These metal plates were made from sheet metal, the main ingredient was iron. Another word for iron is ferric, Latin for containing iron. Some of the names used for this process was tintype and ferrotype. Latter photographers printed their images on chemically treated paper. These are the photo prints you are familiar with. It was discovered that if the surface of the photo print was made glossy and shinny, the picture appeared sharper and had more contrast. The glossy print therefore become quite popular. The print paper used is over coated with gelatin. This surface when dried is not glossy. To make the print glossy, the wet gelatin print was rolled under pressure onto a highly polished metal plate. The wet gelatin molded itself to the texture of the polished plate. The print was allowed to dry affixed to the plate. When the print dried it was peeled away from the plate. Now the print's surface conformed to the shinny plate and the result was a glossy print. The shinny plate was called a ferrotype plate and the process was called ferrotyping. Modern photo papers are now plastic coated. The coat is a plastic resin thus the paper is called RC for resin coat. This coat is now made glossy or matte or with a texture that looks like cloth. Ferrotyping is no longer required to obtain a gloss.
Why is a silver coated plate kept behind a room heater?
what is a room heater
What kind of nails can be used when building a wall?
8d-10d cement coated if toenailing, 12d-16d cement coated if nailing through a plate.
