🚀 go-pugleaf

Robert Korevaar wrote:
> 
> Please can someone help me with the following questions. Most may seem
> basic, but I am just confirming that I have the correct understanding of
> the following,  as I am writing a Microsoft exam shortly.
> 
> 1. What is the difference between ink jet and bubble jet and desk jet
> 
Primarily terminology - I think somebody copyrighted or trademarked
one so they came up with new names for the same thing - they squirt
ink out little holes.

> 2. What is the difference between how an HP ink jet and an Epson ink jet
> works
> 
Probably not very much.

> 3. On an ink jet printer - can you use any paper to print to, e.g.
> photostat , or does the paper have to specifically be coated to ensure the
> ink sets immediately
> 
Any paper will work - coating doesn't make the ink dry any faster,
it's just a smoother surface so that you get sharper images because
the ink doesn't diffuse along the paper fibers.

> 4. How does a laser printer work
> 
It's got a silicon drum, just like a xerographic copier, which is
charged with a high-voltage static charge. When light hits the 
drum (either an image of the original, in a copier, or the laser,
in a laser printer) the silicon becomes conductive and the charge
drains off. Then the parts that are still charged attract the toner,
which is then transferred to the paper.

> 5. What happens if you get laser toner on hands and wash with hot water
> 
I don't know - what happens when you try it? Toner shouldn't be
toxic or anything, it's basically black plastic powder.

> 6. How does a CD ROM disc work - in relationship to reading binary
> 
Well, the read laser reads binary in the first place. An audio
CD player runs the binary through a DAC (Digital to Analog Converter),
while a CD ROM drive sends the binary right to the interface.

> 7. What is a DVD
> 
I think "Digital Video Disk," but don't quote me.

> Thanks

Any time!
Rich