Inkjet Printers | The interesting engineering behind them 

Hmm... I learned the differences between and additive and subtractive (as in paint) colors when I was in grade school.

@@dizzywow Who?

It is really just the different physics of additive and substractive lighting. Materials are colorful because they absorb wavelengths selectively. Light is colorful because it is of different wavelengths to begin with.

Then maybe you'll find the following information interesting too: In particle physics, and more specifically quantum chromodynamics, a "color" charge is used to describe properties of the quarks, the fundamental constituents of protons! Thus we have red, green and blue quarks. Now things get more interesting because, as you might have heard, protons are particles of matter, so you have to combine rgb quarks to create a "white" (or neutrally color charged) proton. And then you have antiprotons that have inverted color charged antiquarks, being cyan, magenta and yellow in colour charge, creating again a color neutral antiproton!!! so, to sum up, matter is fundamentally rgb and antimatter is cmy!!!! Those colors are only metaphorical, as a way to describe their charge and have no relation to the color of physical objects whatsoever! If you are interested in this, look up Murray Gell-Mann and have a nice day :)

this blew my mind

Don't forget the lazy programmers😂

And the enforced obsolescence built in.

And the scam that are cartridges

then just hire the engineers, then market it yourself, and let's see if you do printers business long enough to see yourself become the villain

And an industry that doesn't provide replacement parts.

Hey it's the horizon. Looks like he is getting an engineering degree

Story of my life, The Horizon

you should make a lag machine based on a printer

didn’t expect to see you here lmao

It's so P2W, you should lag out the server.

Not at all. This video is designed to Educate. Schools now exist (as demonstrated by international test scores and rankings) to Indoctrinate. So there should be no conflict. :)

Hate schools 😝

get service. #hidden

Honestly, conventional schooling has been in dire need of one hell of a massive, system-wide overhaul at every single level for a very long time now.

They have been having a "tough time" for 10-30+ years due to being so horrendously bad at everything from peaking student interest to curriculum to leaking politics into the education system.

we all did ...

Considering the $ of an ink printer...

I have Epson stylus 1390 which is made in 2008. I'm facing issue in that printer it's drop ink from it's Head after while without used.

Can we print stickers from this printer????

epic indeed

Well, 1200 dpi doesn't really seem a feat to me. Resistors are just some lithographed alloy over previously lithographed wires mesh. Semiconductors are by far the most amazing nanotech we have. In that single nozzle, we could fit thousands of transistors that are much complex than simple resistors.

@@Dr.Kraig_Ren Right. However, this is electromechanical device which handles real fluid not just electrons and holes. Maybe nanorobots would be a fair comparison.

I would have guessed that making of the heads would be hard and expensive and thus ink heads should be loose from the ink but nope they somehow made them so easy to manufacture and all and also make them so hard to reuse and so just wow

@@Dr.Kraig_Ren Please look up MEMS. It's not a trivial thing.

That explains while ink cartridges that include the head are often almost as expensive as a whole new printer q_q

same bro

Probably started as a giant apparatus on a dirty workbench, and iterated from there over 50 years, nevertheless, incredible.

Apparently the action of heating up the ink to create a bubble that would force it out was by accident, from creating strips soaked in ink for typewriters, and it got heated up somehow and exploded ink everywhere. And lo, the printer was born. I think the ink droplets get fired out at like 20-40mph from your injet cartridge too.

​@@alexjohnward exactly, this is the result of 50 years trial and error by thousands of engineers

ikr

Technically they do use primary colors. The primary colors are different depending on if it is additive or subtractive color space. Black (K) is added because using CMY to make it darker takes a lot of ink and ends up being a muddy dark brownish color due to the accuracy limitations of inks.

they do use it , it’s the shading and heat being transfer changes the perspectives,, welll the tech behind it

thanks for pointing that out

@pyropulse lol

So with that logic, there's actually 90k dots per square inch?

I think there’s a difference between square inch and “inch square” but yeah it does almost imply that it’s a lot less detailed

Yeah more DPI=better image

That is why the cartridge comes costly.

That's the least surprising thing going on with it bit nonetheless I appreciate your appreciation 👍

@@Eren-da-Jaeger the cartridge doesn't have them.

Love your printer before it becomes a Decepticon.

@@fatitankeris6327 Some cartridges do come with the print head. It's more expensive but ensures you get clean nozzles each time without wasteful (and not always successful) cleaning cycles.

@Shorts 🅥 Ok.

I request to know what a _"Priting Path"_ is.

Lol, this is a animal video LINKS to confuse me

Text and numbers are fine, but there are situations such as these where images are just way better

​@@fitmotheyap I would say text and numbers are also images which make understanding our world easier/possible. But because of how complex things are now they alone are just not good enough to explain and teach certain concepts and need to be used alongside the modern day "image" and quite frankly video too since in many cases things are still too complex for still images

Wowww

Thanks

How did you do this ? There's no thanks button on my RU-vid.

@@LabArlyn he has joined the channel or sth idk

It's not cheap lol. It costs as much as a Netflix premium subscription 🥲

Rich folks 🥲

@@Jake-ct2wj actually less than 1$😂

Absolutly👏

We need less science! It's rotting our brains, causing us to try to cure global pandemics with the jab, wanting to go to mars and think the world is melting! (I'm being sarcastic and facetious)

Exactly! When I heard it, it seemed strange and impractical to me, so I watched a printed image and the dots are misaligned as I thought! (Like black in the video)

@@MyNotSoHumbleOpinion The process is called halftoning. It's essentially the same as used by publishers when printing full-color books, magazines, newspapers, etc. Everything is printed at the same intensity, the size of the dots change to give the effect of different amounts of each color. You can usually see it best in the comics section of a newspaper, Sunday edition. A desktop printer will typically measure its resolution in DPI, or dots per inch, and the numbers will be something like 300dpi, 600dpi, and 1200dpi. A halftone image is measured in LPI, or lines per inch, and they will be 75lpi for newspapers and 133lpi for most books and magazines. The halftone grid is at an angle to the page with black at a 45° angle, cyan at 15°, magenta at 75° and yellow at 0°.

Well, you gotta consider the paper is still ever so slightly damp right after the page prints, which means the ink right under the line being printed indeed is still wet during each print head pass. And you better believe the printer manufacturer wants to waste as much ink as humanly possible while still producing a quality printout. So yes, they'll gladly overlap the inks not only in a dithered pattern but also right on top of each other too. Ink costs more than human blood ya know...

The cartridge are expensive because they sell printers at a loss

No, printer cartilages are actually cheap, less than 50 rupees to make one.

Correct… the cheaper printers are actually expensive to maintain… its a pricing tactic that these companies do… the more worthy inkjets are in 12k+ range

By weight, printing ink is more expensive than gold.

Stop using animals video LINKS to confuse me.

Me too

sorry, but this is simply not true, monitor with cmy subpixels cannot work as a full color display

😲

dpi changes the resolution, so the printer just makes few dots the same (like high resolution screen trying to show low resolution - it shows one pixel using multiple pixels showing the same color). For lower ink consumption you can lower the brightness or use "draft" mode in printer settings.

Thank you for confirming my first impulse on seeing these heating resistors. As i'm intuitively thinking mechanical force as in piezoelektric elements would be faster to react.

Correct. Epson uses pizeo, while HP uses heated resistors. There's also other means of printing from waxes (think crayons) to banded color ribbons (old-school impact).

@@brodriguez11000 If memory serves, the wax printers take a long time to start up and use a lot of standby power to keep the wax in the print-heads molten.

Well piezoelectric material need more control technique coz they have 2 position/phase in some certain point of Volt or potential different. But well, they are interesting technology, cant imagine what will my son do while being an Engineer. The techonolgy moves really fast bro, our brain sttruggling follow all the changes XD

They did mention halftoning in the case of Black. But it is used in other colours as well.

this make more sense for me.

for a p type semiconductor, trivalent atoms like boron, indium or gallium is accelerated in a chamber and strikes the Si wafer with high velocity. Same for N type, use a pentavalent atom.

@@roshanantony7467 but isn't doping a covalent bond between silicon and boron/phosphorus?

Just to get an idea: 10 cm X 10 cm X 10 cm = 1L (one liter water is one Kg) 1 cm X 1 cm X 1 cm = 1 mL (of water is 1 gm) 1 mm X 1 mm X 1 mm = 1 uL (for water, it will be a mg) 0.1 mm X 0.1 mm X 0.1 mm = 1nL (a ug of water) -> small but barely visible 0.01 mm X 0.01 mm X 0.01 mm = 1pL - you need a microscope to see the drop to get pL size drops, you need holes that are smaller than 20 micron (10 micron = 0.01 mm)

@@janami-dharmam didn’t know that making a nozzle holes requires a sorcerer

Yeah, that would be interesting to know. I don't know for real, but I would guess they could be made with photolithography same way like other small devices and especially semiconductor electronics are usually made. If not, maybe another way could be to use a laser?

They’re made using semiconductor photolithography. That also conveniently allows some of the drive electronics to be manufactured directly into the head itself without needing separate chips.

yeah I'll love to know this too

Last time i heard they use blender, but could be something different now

hey Today I again searched this video, thank It helped me in bulding my own product

biznis

No, look at the ink tank printers that do the same job and their ink kosten a fraction of the price

Hi, not an expert, however I believe we don't have the same issue because CMY are a mix of RGB, basically a Yellow molecule will reflect green and red at the same time, a cyan one will reflect blue and green at the same time, now since they have a common reflected color, which here is green, we won't have any black spots, which is normally caused by the fact that all colors are absorbed, here since both reflect green, then even though red and blue will be absorbed, green won't and we obtain a green color.

As an example, let’s say we want to make blue from cyan and magenta. The molecular layer of cyan reflects green and blue (primary colors that make cyan). When it passes through magenta, it will only allow blue to pass through as green is absorbed. Likewise, when red and blue (primary colors that make magenta) are reflected from magenta and pass through cyan, only blue is reflected as red is absorbed. No black color is produced.

Nice explanation yall 👍

Yes

It's down to how much it reflects. RGB inks only reflect 1/3 colours from the incoming light. CMY inks reflect 2/3, so any two inks will always have a common colour reflected and thus you only get black when you have all three together. Well, in the ideal case, anyway. Real inks aren't perfect and tend to produce brown rather than black when you mix all three primaries together, which is why you have black ink as well. Using actual black instead of a mix of CMY also reduces how wet the paper gets, which is good for keeping it flat.

yup they make it so you have to buy quick and they are not cheap and cant use 3rd party style as they like make it so you have to use their brand

You're not wrong on your claims, but there's also a caveat in ink jet technology. Since the nozzles are so tiny small, it's very easy for the ink to dry and clog up a nozzle. So the printer needs to be constantly cleaning itself to keep the nozzles free, and the way to do it is to purge and waste away some ink that has already started to dry out of the nozzles. There's no way around this. If you use your printer seldom and always need to be cleaning printing heads and buying new ink cartridges, maybe the best solution for you would be to buy a laser printer as they don't suffer from this problem. Just turn on and print! Color laser printers are expensive but the black only aren't. Or, if you print very very seldom, probably the cheapest solution is to print your documents on a printing business. It's more expensive per copy but you don't need to own a printer and maintain it.

@@Bigvs.Dickvs yeah, I did just that - laser printers are more suitable for sitting off for extended times.. inkjets are only going to be useful if someone is using them every day or two I think. I think they should never be bought by anyone wanting only blue moon / occasional use as all that will happen is you get maybe a dozen pages per set of ink cartridges which makes them extremely expensive and wasteful (as they all do scummy DRM on the cartridges to make it harder to fill up or use alternatives to theirs)

@@Bigvs.Dickvs : Better seals between the inkjet head and the pad. Plus when we cleaned the heads we used a cleaning solution pumped through the inkjet head. Also commercial printers use continuous inkjet technology (CIJ) to print so they have the advantages of one without the disadvantages.

Thats why i rebuy the whole printer when i need more ink lmao

@@d00s0n refill ink using the third party. 10 times cheaper

@@Thrill98 cant always, many have chips in that count down the number of dots printed and throw a wobbly when it goes too low,, you used to be able to get chip resetters for doing this but dont hear of them now

@@andygozzo72 yeah not sure about new models maybe that's why i love my old printer cacon cause it's still possible to reset the count

The same thing i asked myself

Technically you are right, but you could print a version of the image where the hues are shifted 180 degrees. This will cause cyan to become red, magenta green and yellow blue (and vice versa) while not changing brightness. By replacing the colors appropriately, the experiment could be performed. I'm not sure they bothered to do that, though, since they knew it would fail anyway (for the reasons given later).

Actually what's the doubt here? Why should printer assume anything?.. Like does the printer know which colour we use inside it?

@@joshuajames1998 I guess. It receives pixel color data and it probably translates that to CMY

They're ALL ink tanks if you get creative :D

The inkjet printer is cheap because the manufacturers make the printer at a loss and takes back the profits on the ink. Its often cheaper to throw away the entire machine and buy a new then to replace the ink cartridges and so this contributes to todays throw away society where fully working things are thrown away on the scrap heap because its cheaper to get a new then to repair it or replenish its supplies. Also when the head cleaning procedure is performed this takes more ink then to print a page with 100 % coverage to waste ink on purpose and this cleaning cycle is performed every time you want to print something after just some day of previous inactivity even if you just want to print some text at the moment. At least thats how it was on my Epson photo printer. Needles to say I got myself a laser instead as I don´t print that often and so the printer ended up wasting 90 % of the ink on head cleaning.

@@johnpekkala6941 True. This leads to more waste and companies do not recycle these. But they sell you the cartridge by labelling it as made put of 80% recycled material, when only a few people buy it.

@@johnpekkala6941 It's called the en.wikipedia.org/wiki/Razor_and_blades_model

theyre still inkjet, just ink is in a separate tank instead of a tiny amount in the cartridge, which is also the printhead, this is one reason why theyre expensive