The function of an ink-jet printer looks to be fairly
understandable to most of the people: it squirts minute jets of ink at the laser printer transfer paper, but laser printers appear
altogether more mystifying. The toner is a crush: how does that gets
transferred to printing on a piece of paper? The basic to understanding the
process of a laser printer is to be aware of static electricity.
First let us go over the key fundamentals of the laser
printer. There is a revolving cylinder, or drum, a laser component, a hopper
containing toner, and a few rollers which are recognized as the fuser.
Connected with the drum are two further essentials: a corona wire, which will
charge the drum with static electricity, along with a discharge lamp, which could
take away the electricity from the drum.
Now, the fundamental principle behind the laser printer
is to make use of static electricity as temporary glue, initially sticking the
toner to the drum, and then sticking the toner to the laser printer transfer paper. As most of the people know
static electricity could be used to attach things together (more often than not
temporarily). For instance, if you rub a balloon on a woollen jumper then the
balloon would become charged up with stationary electricity, and could be fixed
to the wall.
In the laser printer the drum or the cylinder is a
photoreceptor. It is prepared from a substance that can be easily charged up
with stationary electricity, but the electrical energy will be discharged when
it is stroked by illumination photons. When the mechanism starts printing the
drum begins to rotate. As we have seen there is a charged corona wire linked
with the drum. This charges the drum plane with static electrical energy. More
often than not a positive charge is added.
The drum now has a stationary charge, and, if it passed
the hopper now it will attract the toner, and then turn black (thinking that
the toner is black). This might not really be much of use as we don't desire to
print a piece of laser printer
transfer paper that is all black: we desire to convey a
pattern (e.g. writing).
If we now keep in mind that the drum is photo receptive,
and the stationary charge is discharged while it is thumped by light, then we
can observe how the laser could "write" on the drum.
Conclusion: With the help of this piece of writing you would get to
know how laser printer works and print on
laser printer transfer paper.