How Does Selenium Function in Xerography?

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SUMMARY

Selenium functions as a photoconductor in xerography, playing a crucial role in the image reproduction process of xerographic printers. It is utilized in the print toner to facilitate the transfer of images onto paper. The discussion highlights the charging mechanism of selenium, indicating that it becomes positively charged prior to exposure to the image, while the aluminum drum remains negatively charged. This interaction is essential for the effective functioning of xerographic systems.

PREREQUISITES
  • Understanding of xerography principles
  • Knowledge of photoconductive materials
  • Familiarity with static electricity concepts
  • Basic knowledge of toner composition in printers
NEXT STEPS
  • Research the properties of photoconductors in printing technology
  • Explore the role of static electricity in xerographic processes
  • Learn about the composition and function of toner in xerographic printers
  • Investigate the charging mechanisms of photoconductive materials
USEFUL FOR

This discussion is beneficial for engineers, technicians, and students involved in printing technology, particularly those focusing on xerography and the materials used in photocopying processes.

shehri
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Homework Statement



I've not been able to understand the role of Selenium in Xerograper pronters.Plz. if somebody has indepth infos. share.thanks.

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The Attempt at a Solution

 
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This is a pretty basic answer, but I know that selenium is used as a photoconductor and also as part of the print toner that is used to reproduce images put through the copier.
 
Hi tandooricjhicken dear,

I know its overall role but tell me whether Selenium'll be positively charged before being exposed to the image or at the time of exposition?I think it'll be charged statically before printed starts.But what'll be positive charges & negative Aluminium then which're in state of contact.Will static positive charges conduct /mix with negative charges only after absorbing light?Plz. clear me about it.Thanks.
 

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