Hacking the HP45

Powder and inkjet printing
smeric
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Re: Hacking the HP45

Post by smeric »

OK I will try it today. I download that file from somewhere 2 years ago, I produce that PCB and I did not have time to finish and I went to Nederland and bought color pod from AVG. now I have a time to do that pcb. but I dont need printer I need only marker, so as you said something maybe changed at this time.
ok so I will only change pcb way.
Hen <-> Tsr


I find also another question ..
I used 2N7002 Mosfet at Q1,Q2
but you used PMV20XNER
when I look that circuit its only using for clock ( am I right ? )

I hope its not a big problem.
Last edited by smeric on Mon Apr 13, 2020 10:10 am, edited 1 time in total.
selimmeriçMSc Electric & Electronic Eng.
void main(){return null;}
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dragonator
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Re: Hacking the HP45

Post by dragonator »

If you swap HEN and TSR (cut the traces and add new wired) it should work.
smeric
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Re: Hacking the HP45

Post by smeric »

its ok now .. thanks..

Code: Select all

10X resistor: 331.94

RSR resistor: 330.16

Temperature: 80.44

GTP:BQ
selimmeriçMSc Electric & Electronic Eng.
void main(){return null;}
kushalwagle
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Re: Hacking the HP45

Post by kushalwagle »

So, the hp45 and hp51641A have the same footprint for the connecter, but will this circuit work for both of them ?
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dragonator
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Re: Hacking the HP45

Post by dragonator »

The HP45 shares it's footprint with quite a few heads, but internally I can not guarantee that they are the same. All the CMY heads have 3 smaller rows of colored nozzles, not 2 large rows like with the HP45.

Short answer, I can only guarantee that the HP45 is compatible.
kushalwagle
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Re: Hacking the HP45

Post by kushalwagle »

Where can we find the patents for those cartridges? I tried to search but couldn't find anything about it. Will HP provide such info if we contact them?
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dragonator
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Re: Hacking the HP45

Post by dragonator »

I do have a small list of patents that might be interesting:
  • EP0705695B1: HP45 function and layout
  • EP0707967B1: The same but patenting something else
  • US5648805: I think the US patent for one of the above
  • US6866364: How a printer is made from HP45 I think
  • US5363134: A pre HP45 head
  • US5635968: One of the printheads with only 4 rows of contacts and 100ish nozzles
You can find the patents in something like google patents. Some of the patents hold most of the information you need to hack a printhead.
nabi
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Re: Hacking the HP45

Post by nabi »

dragonator wrote: Sun May 03, 2020 8:54 am I do have a small list of patents that might be interesting:
  • EP0705695B1: HP45 function and layout
  • EP0707967B1: The same but patenting something else
  • US5648805: I think the US patent for one of the above
  • US6866364: How a printer is made from HP45 I think
  • US5363134: A pre HP45 head
  • US5635968: One of the printheads with only 4 rows of contacts and 100ish nozzles
You can find the patents in something like google patents. Some of the patents hold most of the information you need to hack a printhead.

dragonator, First Please accept my apology, I just want to offer a alternative way for print head;
Is there any chace to adapt Mbrash printer to your concept ?
https://trenchio.com/products/the-world ... or-printer
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dragonator
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Re: Hacking the HP45

Post by dragonator »

Hello Nabi,

If anyone would invest the time trying it, I think it would be possible. All the required parts seem to be there, and I think you can have enough control to integrate it into a diy printer. Do you have any special interest in full color heads?

However I am not going to pursue products like the Mbrush. I want to have full nozzle by nozzle control of what I am printing. When I do find more time I already have a few options for full color printing. One compatible with the HP45 family, and one based on I think a Canon head that SpriteTM hacked a while ago.
rofl
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Re: Hacking the HP45

Post by rofl »

dragonator,

I am testing head and all seems good, but could you help me to understand what was the purpose of VHEAD pins? It seems like separate power for head? I am more or less talking about that connection pin next GND and 12V terminal.

I have completely redesigned Oasis for metal printing and I hope after quarantine I will start making some first tests.

Thanks
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