File:Xerographic photocopy process en.svg

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Description
English: Schematic drawing of the xeroxgraphic photocopying process. Vectorization of the image. Original image made by 'Wschneider' on the German Wikipedia.
  1. Charging: The surface of a cylindrical drum is given an electrostatic charge by either a high voltage wire called a corona wire or a charge roller. The drum is coated with a photoconductive material. A is a semiconductor that becomes conductive when exposed to light.
  2. Exposure: A bright lamp illuminates the original document, and the white areas of the original document reflect the light onto the surface of the photoconductive drum. The areas of the drum that are exposed to light (those areas that correspond to white areas of the original document) become conductive and therefore discharge to ground. The area of the drum not exposed to light (those areas that correspond to black portions of the original document) remain negatively charged. The result is a latent electrical image on the surface of the drum.
  3. Developing: The toner is positively charged. When it is applied to the drum to develop the image, it is attracted and sticks to the areas that are negatively charged (black areas), just as paper sticks to a toy balloon with a static charge.
  4. Transfer: The resulting toner image on the surface of the drum is transferred from the drum onto a piece of paper with a higher negative charge than the drum.
Română: Desen schematic al procesului fotocopierii xerografice. Versiune vectorizată, imagine originală realizată de către Wschneider pe Wikipedia în limba germană.
  1. Încărcare. Suprafeţei unui tambur îi este atribuită o sarcină electrostatică fie de către un cablu de înaltă tensiune, numit cablu corona, fie de către o rolă de încărcare (sau de developare). Tamburul este învelit într-un material fotoconductiv (zona galbenă din imagine), adică un semiconductor care devine conductiv atunci când este expus la lumină.
  2. Expunere. O lampă puternică iluminează documentul original, iar zonele albe ale acestuia reflectă lumina pe suprafața tamburului fotoconductiv. Zonele expuse la lumină ale tamburului devin conductive și prin urmare se descarcă la pământ. Zonele neexpuse la lumină ale tamburului (acelea corespunzătoare porțiunilor negre ale documentului original) rămân încărcate negativ. Rezultatul este o imagine electrică latentă pe suprafața tamburului.
  3. Developare. Imaginea din pigment rezultată pe suprafața tamburului este transferată de pe acesta pe o foaie de hârtie cu o sarcină negativă mai mare decât cea a tamburului.
  4. Transfer. Pigmentul este topit și fixat pe hârtie de către role presante încinse.
Date 10 November 2007(2007-11-10)
Source Own work
Author Yzmo
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Deutsch: German version
Español: Spanish version
Italiano: Italian version
Polski: Polish version
Română: Romanian version
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current12:31, 10 November 2007Thumbnail for version as of 12:31, 10 November 2007800 × 1,550 (149 KB)Yzmo (== Summary == {{Information |Description=Schematic drawing of the xeroxgraphic photocopying process. Vectorization of the image. Original image made by 'Wschneider' on the German wikipedia. |Source=self-made |Date=10 November 2007 |Author= [[User:)
12:26, 10 November 2007Thumbnail for version as of 12:26, 10 November 2007800 × 1,550 (150 KB)Yzmo ({{Information |Description=Schematic drawing of the xeroxgraphic photocopying process. Vectorization of the image. Original image made by 'Wschneider' on the German wikipedia. |Source=self-made |Date=10 November 2007 |Author= Yzmo |P)
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