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What's inside a DTG ink Cartridge?

1535 Views 12 Replies 7 Participants Last post by  Stitch-Up
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I knew I was getting low on white ink and tonight, my prints appeared to be starved of white!

So, being the 'tight fisted git' I am, I decided to crack a cartridge open and roll up the bag inside to shift the ink to the front and maybe get a few more prints :D

I guess most of you have opened up a cartridge, but for those that haven't, here's a peek inside.

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Re: What's in a Cartridge?

I imagine this will be the only way to the get the best yield for your system. Brother's ink cartridges lay flat and that is the proper way to handle cartridges in a system like this. When they are vertical, the weight of the ink surpasses the vacuum created and the ink drops below the point of efficiently drawing ink out of the bag. This is why your prints began starving. If you cracked open a Brother cartridge when it was out, I imagine you would see it use almost all of the ink. It appears as if you saved about 60ml, I don't think I would call that "tight fisted". ;)
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Re: What's in a Cartridge?

The consequences of running out of ink and having to purge the lines are more serious than the cost of the ink, according to the ink sellers :)
Epson are now pressurising their cartridges, I doubt whether it is for the user's benefit.
Re: What's in a Cartridge?

Epson are now pressurising their cartridges, I doubt whether it is for the user's benefit.
I'm not sure I understand this statement. Are you saying Epson based dtg printers or are you saying Epson themselves. If it's Epson and they are pressurizing their cartridges, what would the benefit of doing that?
If it's dtg printer companies, what do you mean by pressurizing?
Re: What's in a Cartridge?

These are the newer Epson printers, their cartridges are below the head and put under pressure, great idea, but if your cartridge loses pressure it doesn't work.
Re: What's in a Cartridge?

These are the newer Epson printers, their cartridges are below the head and put under pressure, great idea, but if your cartridge loses pressure it doesn't work.
Ahhh. I assume it's supposed to perform better, or they are trying to stop 3rd party ink companies.
Re: What's in a Cartridge?

Ahhh. I assume it's supposed to perform better, or they are trying to stop 3rd party ink companies.
Hmmmmmm - I've been repeatedly told that pressurizing ink in a system is among the WORST things for the head. Now I read that Epson is doing it.:confused:
Re: What's in a Cartridge?

That's what I understood as well. It could be more related to dampers.
Re: What's in a Cartridge?

Hmmmmmm - I've been repeatedly told that pressurizing ink in a system is among the WORST things for the head. Now I read that Epson is doing it.:confused:
I don't think that it's high pressure, otherwise it would just spray the ink out of the head. Just enough to keep ink moving to the head when needed, remember the ink is below the head and needs raising.
Re: What's in a Cartridge?

Hmmmmmm - I've been repeatedly told that pressurizing ink in a system is among the WORST things for the head. Now I read that Epsom is doing it.:confused:
The Epson OEM cartridges do not put pressure on or above the ink head.
Ink will in not jet correctly under a positive pressure, it's designed to help equalize the pressure drop since the ink (fluid level) cartridges are below the head, especially when the carts are low in ink.
This is one of the reasons our bags are mounted horizontally.
KISS.
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Pressure pumps have been used for several years now on the larger Epson Pro series printers such as the 7800 and 9800. The pressure pumps are designed to be used to regulate ink supply pressure. They pump air into the top of the ink cartridge to squash the ink down to the bottom of the cartridge to help keep an even and stable ink supply from the cartridge to the print head.

Harry
Equipment Zone
If I were to fold allong the red dotted line (see pic) it should ensure the maximum use of ink.

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