10 hours 41 minutes
all right. And this module, we're gonna talk about the different types of printers
and their capabilities
for some common term. So in Microsoft definition of printer, we're talking about an application that controls the physical printer is made up of the print driver, which is what translates,
uh, What? We're standing from the computer to the actual printer. So each fire was gonna have its own driver. That explains what it's capable of doing. What speed at Prince at, um, you know, can it praying Color can't print color. The driver is gonna communicate the printer and tell the operating system
what that means. And then the school and the school, er something that runs on the computer itself, and it's a cue for print job. So if you
it's a first in concept. So you put I put a job in print and enough another job comes. It's gonna wait to that first job done and then just
keep processing in a queue.
So when we say print device for talking about the actual physical printer sitting somewhere,
so when we go to actually print,
a series of steps are executed.
So first we have the print on there, it's gonna get sent to the computer or the operating system.
Now, if we're talking on a server, you may have other print jobs already waiting for that printer.
So you're just gonna go on the weight.
And as soon as the prince available and it's still as paper and plenty of toner,
your job will go through.
Biggest bottleneck is
images will slow it down quite a bit because
has toe process that and turn it into something that the printer could understands off large images. Large graphics might see this in a large part point
project. If you have a lot of slides that have a lot of graphics, you may notice that takes a little while before it shows up the printer. That's because it has be converting to something the printer understands.
First, we'll talk about laser printers,
most complex of the printers. They are fast. They produce superior Texan graphics of the other kinds, the most common other kind of in jets that we'll talk about next.
Most of them do black and white. There are color ones. They're a lot more expensive,
they're the fastest of all the prayers and become
the probably most prevalent, especially in offices.
So what makes up a printer? So the first part of the toner and that's that's where we get
that's That's what's actually ends up on the paper at the end of the day. That's That's our ink for a laser printer.
It's made up of plastic particles, bonded toe iron particles, and this plastic in the end ends up getting melted onto the paper. And that's how we get our printed image or text.
So if we're talking about a black,
black and white only printer, we're just gonna have one cartridge.
When toner cartridge that's gonna have
black toner in its That's plastic particles of iron particles that have black pigmentation at its now for a color printer, we have Maur toner cartridges.
It's the same kind of toner at the base. It just has different pigmentation added to it.
So for color Laser Pretty, we have a separate cartridge for each color,
so it depends on the printer. If it's if it's a high quality color printer, it may have a cartridge for more than just red, green and blue. The other's. We use red, green and blue in a mixed to create the other colors.
So the process for printing using laser printer there seven steps.
We start with the processing, so the processing is the initial. When we send it, we send a job from the actual computer, and we send it to the laser print itself. Now the laser for itself has almost a mini computer inside of it, which has RAM,
just like a PC would have maybe 5 12 maybe a gigabyte.
And what this does that sends the image or the data that you want to print. So it's called the Raster Image Processor, the R I P.
What this does is it takes one page at a time. It turns whatever you're sending, whether it be texts or graphics or combination to it turns into a series of dots
for a raster Rast arrived image in the series of dots or pattern of dots
is what is ultimately displayed on the page because that's how it prints it out with the toner.
So is turning into a language that it turns into a format that the laser pointer understands for transferring to
some of the common problems you might see with a laser printer when dealing with. The reason we have RAM is when dealing with large images.
converting has to happen in RAM
so that rest arised images created RAM. So if this image is way too large or it's a very high resolution, you may get air from the laser print because it doesn't have enough RAM to process it. And if that's the case, then you're gonna have to
go to a lower quality image
or maybe print one page at a time a little slower.
So after we've done the processing So we've turned this. We've turned the data from the computer, the text and graphics into arrest arised image that the printer knows. Now, this is how I want this. I'm gonna print out to the paper,
we go to the charging. So here's a Here's a breakdown of how the actual laser proves laid out.
Whoever paper trade here is the actual laser light.
So what happens is everything revolves around the drum.
The drum is how we're gonna move these toner particles around using static electricity and positive and negative, they charged,
bothered of niggly charged particles.
So it's gonna happen. Is that the first step. What we call the corruption of wire, which has extremely high voltage, is gonna make this entire portion of the drum to doing this entire process. This drum rotates,
so it's going to start making, so we'll start here. So the drum starts for attendants to make this entire part of the drum negatively charged.
That's kind of giving you a clean slate. So right now, the surface of this drum Now I should know, even though it looks like in this picture,
the Corona wire and none of this is actually touching
So now we have a blank canvas of negatively charged particles on the top of this drum here.
So now we rotate down,
so we come here. So now the laser has that restaurant eased image, which is that Siri's of dots that make up the image.
And it's going to go and draw on the drum where that negative images, so every place that is not
gonna be part of the image is gonna be turned positively charged. So it's kind of reverse painting,
so we're gonna take everything that's not gonna be
part of the image or part of the text that's all gonna become positively charged. All that's left is a negatively charged image here
of our graphics.
I mean, think of it kind of like
that. Well, that that portion of its not the entire page yet this a continual process that goes along.
So the laser printer does that. That's what the ladies is actually doing. Is painting the discharging
the non image parts of your graphic or text that you're sending to the printer?
The next step is developing.
So now we've got our negative image here,
and we're now we're over here. And so here's our toner cartridge.
And so, by this being ugly charges gonna draw out the positively charged
particles of the toner.
So the toners we statically charged we're going to statically attracted to the negatively charged particles here is now. So now we have like So now the actual black dots that make up the toner or attracted today only charged particles and are stuck to the side of that toner cartridge
Still with me. Stop me Any point here
now we're coming back around
now we're doing the transferring. So what happens now is so as this is coming around. And this is all about timing, since all has to happen the right time. This nose is coming around the paper tray knows to come in. Okay, we're gonna feed up the paper,
and we're gonna start bringing that in the same time this coming around
the paper is have a positive charge. And as it comes down through here just as this is coming around, he's still doesn't touch
that. The the toner particles which are negative charge, are gonna be attracted
to the positive charge paper coming through here. And they're just gonna almost fall onto the paper.
So now they're basically just sitting on the paper, those particles that we've pulled out and they're sitting on that paper in the format that we had on the drum.
So if we if we had it open and we just blew in there, they would
go right off.
So as it comes feeding through
on the feuding session. So this is how we purposely bind it to the paper now. So we've come through here, and those particles have come back off. The roller knows that paper that comes through here,
they're gonna be fused to the paper by heat,
and that's what's gonna make it permanent attach.
So now this isn't done. This is done. Not just like once for an entire page. This happens as
as the lines coming. So this is gonna be a continual process. So as the papers coming through here. So as these particles air falling onto the paper right here, we have new
new lines being added. Here we have
new particles being discharged here. We have new toner coming on. It's all instinct. The fall of paper coming through the build, the image
as the paper flows.
So after that, so after this part of the paper so we could have a sheet of paper with all this part going on.
So after this part that was coming through. So now this part needs to get reset.
So we call that the cleaning step,
and so has that's come back up. So we've just done our dirty work here, so we've got kind of messy. You gotta mix of positive negative charge gets, um, some toner left on the drum. So you get up here, we have a discharge land that's gonna clear off
all the leftover particles
and then there's also a physical cleaning blade that also clean off anything else. In most cases, this set up so that the leftover tone and stuff will fall back into the cartridge.
In this case, it's not
lined up. This is lined up more for explanation, but and some other prayers might have a discharge,
Trey. But you have to clean out. Yeah,
so it varies by printer.
So in jets, so in jets are more popular because they're cheaper,
at least in the first time you buy him.
So the basic concept for a change it was You have the papers grabbed from the paper tray by a roller and sent to the printer
and then the PRA head s o. Then on that roller as it comes to the roller. Actually, I think I might draw this
self described first on the papers grab from the paper tray. So you have a trade that sits usually underneath with a roller that grabs it up, and it brings in front of the print heads. And the print heads are a series of cartridges of different colors, just like with laser print of a black one kind of a red green and blue to make up the colors could have more of its a more detailed
if it's a more high resolution printer.
Hi graphics, photo quality printer
and these these cartridges and the which are the heads sitting a little tray that are Tatchell ribbon.
And as the papers fed through, they go back and forth. The ribbon just drags it back and forth and prints out the ink.
And the ink has put out through tiny bubbles that air heated to a boiling point by electromagnetic plates,
which causes the air bubbles to form and injects the ink out into the paper.
So it's a lot simple over process,
then a laser printer.
So that's what the encourages will look like. Like I said, most commonly, you got your
three colors and then the black, some who might have an extra black
cartridge for just doing black printing, and this black one would be used for
just photos. I've seen that before, since black printing is probably more common when you're pretty just right there
Power caller printers might come with more than eight additional cartridges, so we're talking high photo
all the resolutions on printer ink jet printers are defined by D. P i
dot for ink.
And so here's a little graphic that kind of represents it. So the more dots you have per inch is the find of the resolution is gonna be So that means you can make more detailed pictures because there's gonna be more dots physically in that.
In that area
with inkjets, speed is measured by page for minutes.
They'll say how many? So how many pages can't put in a minute?
That's gonna be how you measure speeds.
I also say, um, it also put it in terms of black only or color, because black is always gonna be faster. Could we only have
with one color to worry about, you know? So for just doing Texans going faster but color, especially high color images, we're gonna be doing a lot of back and forth on the same line. To get the right color
or to fill an entire pages text might be just a few dots across the page. Well, do. Ah, color image might be an entire line filled with different color, so it takes longer with
So what could be misleading here, though, when talking about inkjets is supporting, remember, is that
the ink cartridges are really, really expensive.
So that's one thing to note. So laser printer cartridges are also kind of printer, but they are also kind of expensive, but they last a lot longer.
Inject cartridges could cost almost as much as the actual printer did.
Just a minute.
What's that? Just buy a new print that sometime.
Yes, so that's something to be very aware of within cartridges. So it depends on how much you print in color if it's worth
going with a laser color laser printer or a color inkjet printer. See, really, I look at costs over time because
color laser printer will last longer, but it could be a higher cost. Up front
in jets is gonna be a longer cost in the long term, but you don't know a lot of printing a lot of color printing. It might not be as as much
inkjet still tend to do better. Quality photos
for printing than a color laser print will do. Color laser printers end up coming out kind of shiny
because the way that the heat, the particles a refused onto the page.
As a result of that, the images tend to be a lot more shiny or so
high end photos were still. If you do a lot of high end photography, you want to print those. The best way to do that is with Nick Jet printer. Still,
it's just gonna be expensive.
The other nice appeal for in jets are the wider range of media that they can print on.
So Laser pers pretty much her only paper,
and you might be able to get some things like envelopes for something if if your if your laser printer supports it. But in jets have a high range of
capabilities, you put on each Eireann transfers so you can make your own T shirts you can print. You know,
the iron on type stuff. You can do the photo paper special photo paper
so they won't even let you print
your own labels on CDs.
They're better putting at different in different kinds of thickness of paper like card stock.
So that's another real big attraction of
inkjets with wide range of media can print color on especially
impact printers. Our printers that use a physical that using ink ribbon kind of like Think of other really fast typewriter
They're really more of the original kind of printer.
They dominate the market with fur
point of sales type system. They didn't print receipts.
Most common form is dot matrix printers
to quality types. Be aware of the nine PIN, which which is considered draft quality, and 24 pin, which is near letter quality.
Now these are super keep.
they're still quite. There's still quite a few out there. In some businesses,
you notice that they use a tractor feed method. So
if you remember from a while ago the special kind of paper. So the papers said, bye
little spokes on the side that have that fit in these holes, and that's what feeds that paper through. And then when you're done, you rip off the sides
and they're very, very noisy.
That sound about right
and then another kind of printer is thermal printers that use heated heads for images on the paper.
You do this to a heating element to burn dots
onto special thermal paper.
These are most commonly seen in fax machines,
especially the first generation. I know a lot of fax machines now are integrated with all one devices that are probably in jets now.
A lot of the original
fax machines had yet that special thermal paper that used in this how,
and it heated the ink onto the page.