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What is the charge on the paper during the image transfer phase?

During the image transfer phase of printing, the paper is given a charge that is opposite to that of the toner particles. This helps to attract and transfer the toner from the photoconductor drum to the paper.


What are the functions of the two corona wires in a laser printers?

They transfer toner from the drum to the paper.


Which voltage is applied to the paper to transfer the toner to the paper in an ep process laser printer?

A high voltage, typically around 600 to 1000 volts, is applied to the paper in an electrophotographic (EP) process laser printer to transfer the toner from the drum to the paper. This electrostatic charge helps the toner particles adhere to the paper before being fused in place by heat.


What is the purpose of the corona wire on a drum, and how does it contribute to the functionality of the drum?

The purpose of the corona wire on a drum is to create a static charge on the surface of the drum. This charge helps attract toner particles to the drum, allowing for the transfer of the toner onto the paper during the printing process. In essence, the corona wire helps facilitate the printing process by ensuring that the toner adheres properly to the drum and is transferred accurately onto the paper.


How is static electricity is used in a photocopying?

Static electricity is used in photocopying to attract toner particles to the photoreceptive drum, which holds an electrostatic charge. When the drum comes into contact with the paper, the toner particles transfer onto the paper, creating a copy of the original document.


What is the purpose of an imaging drum?

An imaging drum is present in laser printers. The imaging drum receives the image sent by the laser in the printer. The drum holds the electrostatic charge to transfer the toner ink to paper.


What are the six steps of the laser printing?

1.Cleaning – Excess Toner is Scraped From The Photoelectric Drum. 2.Conditioning – A Uniform -600 Volt Charge is Placed on the Photoelectric Drum By The Primary Corona. 3.Writing – Laser Diodes Write An Invisible Electric Image on the photoelectric drum by causing the Drum surface, to be less negative wherever the laser beam hits. 4.Developing – This is where the transfer roller places the toner on the drum. The toner sticks to the areas that have had the electric charge lessened due to the laser beam 5.Transfer – The Secondary corona uses a positive charge to attract the toner from the drum to the paper. The paper gets charged by corona too. 6.Fusing – The toner is then melted into paper.


How does a photocopier use static energy?

A photocopier uses static electricity to transfer toner particles onto paper. The toner particles are given an electrical charge that is opposite to the charge on the photoreceptor drum. This causes the toner particles to be attracted to the charged areas of the drum and subsequently transferred onto the paper.


What is the main purpose of a laser printer charge corona?

When an electrical charge is placed on the drum repels the toner particles that have the same charge. The laser then discharges the drum in specific places, causing toner to stick just to the discharged places on the drum. The toner is then transferred to the paper and the paper is heated to fuse the toner to the paper.


What type of technology is used for a Xerox machine?

Xerography, a form of photography using electrostatic toner transfer. A photoconductive drum is first electrostatically charged, then it is exposed to the light of the image which removes the electrostatic charge only in the illuminated areas, then the toner powder is applied to the drum and sticks to the areas that are still electrostatically charged, then the toner powder is transferred off the drum to a sheet of paper by another electrostatic charge. The paper carrying the toner powder then passes through an "oven" which melts the toner bonding it to the paper.


What does a positive charge on the transfer corona wire caused?

A positive charge on the transfer corona wire attracts negatively charged toner particles from the drum onto the paper as it passes through the printer. This helps in transferring the toner image onto the paper during the printing process.


What are the Electrostatic copiers and there types?

Image TransferAll Electrostatic Copiers work under the premis that a charge of electricity is placed on an Image Drum which has the ability to retain the electric charge much like a capacitor holds it's charge but with the ability to hold or release the charge depending on how much light and darkness is applied to the Image Drum. on analog copiers the light and darkness is reflected from the mirrors on the scan area and brought down to the drum surface creating the image that was reflected from the paper that is being scanned. On digital copiers the Image is processed (much like a desktop scanner) by processing the reflected image and converting the image into dots(DPI) then a laser will shoot a light laser image corresponding to the paper that is being scanned onto the Image drum. Image Creation Now that the Image Drum has been hit with light either from the laser or the reflecting light, it will have various charges on its surface (exacting the Image of the scanned original paper) this is called an elecrtostatic latent Image (ESLI) The Image Drum with the ESLI will now be turned till it reaches the developing unit (where toner and developer are mixed to charge the toner (yes toner has the ability to magnetize after mixed with the developer powder) Now, where the drum meets the developer roller is the magical part. Now that the toner is charged with magnetism it will adhire to the Image drum (where the dark electrostatic parts from the Paper Image came down on the Drum) making all the dark parts pull in the toner to the drum and all the light parts do not allow toner to contact the Image Drum, now this Image drum has an image with toner on it (wanna test this ? Stop a copy in the middle of copying, open the copier and pull out the drum, you will see toner on the drum with parts of the image from the original paper ) After the Image on the drum is full of toner It will be turned where the Transfer part is executed Image transferEver put metal fragments on a paper then put a magnet below the paper ? the fragments are attracted to the magnet. This is how the transfer process is done. the drum is turning with the image of toner on it the a paper is positioned below the drum and sinchronized at the same speed with the Image drum, at the point where the paper and the drum meet a high voltage is applied in order to attract the toner off the Image drum and on to the paper, now the paper is full of toner looking like the Image original paper that was scanned. Final sequence now that the Toner is on the paper (looking just like the original) two rollers with heat at about 200 Digrees F press the toner on to the paper making it permanently fused on the paper.