mono lazer printers

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mono lazer printers

a lazer printer doesnt use ink as such its all in powder form and is very messy and nasty stuff, I dont think you can buy the powder to refill a cartridge you just buy the whole cartridge and then its easy to change.

Generally Lazer printers are better for large amounts of printing and last longer.
 
ArcticBeast said:
a lazer printer doesnt use ink as such its all in powder form and is very messy and nasty stuff,
Tell me about it - not fun when swapping toners wearing a white shirt ;) - hence why I get a minion to refill it for me :D
 
Go into any office with aa high print volume and you'll struggle to find an inkjet.

Laser printers are excellent for high volume, sharp document printing, the cartridges are tested using an A4 sheet size document covered in lower case e's, many can do 10K worth of these to a single cartridge.

You can get copies and the inkjet refill places will fill some of them but they far outlast inkjet so much that the cost doesn't seem so bad.

I'd say they cold work in colder temperatures since the delivery method uses negative and positive charges to drop the toner to the paper then a heated drum seals it all.

I'd never use an inkjet cos the makers make them to be greedy, your always spending.

Samsung do a cool wee B+W Laser, £40 or so, sometimes the official toner is nearly that so you just buy a new one.

Liam
 
grr :( Go for a cheap £40 one (brother I believe often do them at this price?) and they probably won't ever have to change the toner, though they only come with a half filled type one or so from manufacturer. Guessing it's for the scrap yard?
 
dave said:
oh and what are these drums, do they need replacing?

wikipedia said:
There are typically six steps involved in the laser printing process:
  1. Charging: A corona wire (in older printers) or a primary charge roller projects an electrostatic charge onto the photoreceptor, a revolving photosensitive drum or belt which is capable of holding an electrostatic charge on its surface as long as it hasn't been exposed to certain wavelengths of electromagnetic radiation.
  2. Writing: A Raster Image Processor (RIP) chip converts incoming images to a raster image suitable for scanning onto the photoreceptor. The laser is aimed at a moving mirror which directs the laser beam through a system of lenses and mirrors onto the photoreceptor. Lasers (now typically laser diodes) are used because they generate a coherent beam of light for a high degree of accuracy. Wherever the laser strikes the photoreceptor the charge is reversed, thus creating a latent electro-photographic image on the photoreceptor surface;
  3. Developing: The surface containing the latent image is exposed to toner, very fine particles of dry plastic powder mixed with carbon black or coloring agents. The charged toner particles are electrostatically attracted to the photoreceptor where the laser wrote the latent image;
  4. Transferring: The photoreceptor is pressed or rolled over paper, transferring the image. Higher end machines use a positively charged transfer roller on the back-side of the paper to pull the toner from the photoreceptor to the paper.
  5. Fusing: The paper passes through a fuser assembly, which, having rollers that provide heat and pressure (up to 200 degrees Celsius), bonds the plastic powder to the paper;
  6. Cleaning: When the print is complete an electrically neutral rubber blade cleans any excess toner from the photoreceptor and deposits it into a waste reservoir, and a discharge lamp removes the remaining charge from the photoreceptor.

Drums only need replacing if they're broken.
 
It happens but it's rare, some lasers come with a new drum when you buy new toner.

Brother sell great printers on ebay, price is great.

Liam
 
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