Hacking cartridge HP 84/85

Powder and inkjet printing
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dragonator
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Re: Hacking cartridge HP 84/85

Post by dragonator » Mon Jan 14, 2019 5:04 pm

I was already waiting on his post. I got an email from him before the conference showing his results. Once I am done with other printheads I cannot wait to try this one.

MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Mon Feb 11, 2019 8:44 am

who can tell where to look how to program tensi except arduino IDE

MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Mon Feb 11, 2019 9:02 am

Does anyone have the opportunity to look at this head under a microscope?

MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Mon Feb 18, 2019 8:41 pm

I'm starting to disassemble and explore this printhead
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dragonator
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Re: Hacking cartridge HP 84/85

Post by dragonator » Tue Feb 19, 2019 6:35 am

That is not what I expected to be on the inside.

When you add ink or water to it, does it fill the plastic bellows or go past it. I expect that the ink needs to be on within the black plastic body with the printhead on it and not within the clear bellows to work, but I have a bit of difficulty understanding it right now.

MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Tue Feb 19, 2019 7:07 am

air only in bags
and air can be supplied through this opening
I did this on video
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MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Tue Feb 19, 2019 9:47 am

ink in the reservoir as it should be

MAsic12345
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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Tue Feb 19, 2019 3:50 pm

I understood what this air bubble is for.
the bubble is a valve and it regulates the pressure in the print head
Constant pressure is applied to the print head.if there is not enough ink in the head tank a vacuum is formed
then into the bubble through the upper valve air is drawn and it swells up and opens the constant ink pressure valve

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Re: Hacking cartridge HP 84/85

Post by MAsic12345 » Tue Feb 19, 2019 3:56 pm

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