As a service to the hobby community, I'm offering an inkjet kit in the near future. Here's some videos and details in the descriptions: http://www.youtube.com/watch?v=bYZYvhQ07Tk http://www.youtube.com/watch?v=K4jkOITEUHA Anyway, right now I can sell the heads + ffc connector. It would be nice to have a small SMD circuit to mount to the reprap and I'll post the schematics and hope someone can help layout the board/program the code. Right now it's on a parallax propeller but thats a bit over kill if all you want is to fire a stream of ink and do all the control with the reprap software. The circuit is very simple so hope someone with expertise in cost cutting can take it up. Since I have a lab power supply and plenty of higher end equipment including a CNC XYZ gantry, I have all that I need. https://reprap.org/forum/read.php?1,26026,26026#msg-26026 Fri, 15 May 2026 01:17:40 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,26026,195712#msg-195712 https://reprap.org/forum/read.php?1,26026,195712#msg-195712
The HP head will perform well at a variety of pulse width times with flexability on the voltage height of the pulse. It's more important to give it the correct "energy" pulse than anything else. And the time between pulses allows the dynamics of the fluidics to get back to a normalized state.

Best of luck,

Mike A. malden1960@gmail.com]]> mikeal General Thu, 28 Mar 2013 15:57:08 -0400 https://reprap.org/forum/read.php?1,26026,195710#msg-195710 https://reprap.org/forum/read.php?1,26026,195710#msg-195710
Have you been able to get this off the ground and do you have the holder for the cartridge? I believe the holders are no longer available. But we should be able to print these on the 3-D printer if we have a cad file.

I worked on many HP cartridges for 12 years and this was literally the very first product that HP put out. 1980 I belive.

Interfacing to this one might be a bit difficult and it is a single color cartridge with fairly low resolutin. There are other cartridges that would work for this application as well. But no book written on them. If you just want to get a single jet to fire this will work but no way to solder to the glass contacts without the cartridge holder.

I'd also be interested to know if you have a circuit for this as well.

Thanks,

Mike A.]]> mikeal General Thu, 28 Mar 2013 15:46:12 -0400 https://reprap.org/forum/read.php?1,26026,185351#msg-185351 https://reprap.org/forum/read.php?1,26026,185351#msg-185351 Xaar Electron ~128nozzles ~170 eur => 1.3 eur per nozzle

As far as price per nozzle can make sense.
Regardless of price, on the overall i think Xaar is at least 2 leagues above hp, plus being piezo and have more ink freedom.]]> NoobMan General Sun, 17 Feb 2013 08:21:23 -0500 https://reprap.org/forum/read.php?1,26026,181873#msg-181873 https://reprap.org/forum/read.php?1,26026,181873#msg-181873 I would like to get a board to drive the Xaar printheads.
Please advise
George]]> George General Mon, 04 Feb 2013 05:52:37 -0500 https://reprap.org/forum/read.php?1,26026,81458#msg-81458 https://reprap.org/forum/read.php?1,26026,81458#msg-81458
I run a printing company. I have a product that requires printing variable information where inkjet printing will be ideal. How do you synchonise the printing with the paper travel? I really will like to take this a lot further. Please advise]]> Kookk General Wed, 20 Apr 2011 08:00:49 -0400 https://reprap.org/forum/read.php?1,26026,75905#msg-75905 https://reprap.org/forum/read.php?1,26026,75905#msg-75905 Tramagust General Fri, 04 Mar 2011 04:36:54 -0500 https://reprap.org/forum/read.php?1,26026,75670#msg-75670 https://reprap.org/forum/read.php?1,26026,75670#msg-75670 -------------------------------------------------------
> No the HP 51640 is the only cartridge that I have
> full datasheets for since it was published in the
> Inkjet Applications manual. It's available in
> black, red, and blue. You can probably refill it
> with your own color to get CMYK with 4 carts as
> you said.
>
> I also have full datasheets and manuals for the
> Xaar heads so I can make a product for that easily
> also but there needs to be enough demand for me to
> do so.
>
> You can probably just use a logic analyzer and
> oscilloscope to figure out the signals going into
> another HP head like the 40 series.
>
> [spritesmods.com] hacked such a
> head. However, I question his methods. In the
> Inkjet Applications book, it says you need to give
> exactly 4.5us at 24V. If you use 21V you need to
> give it 6us.
>
> Spritesmod fires some inkjet some random pulse
> time at some voltage around 40V.
>
> This doesn't seem very reliable to me. You can
> easily check out the signals with a bypass circuit
> but at the end of the day it isn't worth my effort
> when the HP 51640 works and does it is supposed
> to.
>
> If you have 600x600dpix4 colors=1.44 megabits of
> data per square ink you need to transfer and
> process.
>
> It's all doable for sure but unless you want it
> bad, it's probably not worth it.


Could you please give me the full datasheets and manuals of xaar printheads?
beacause of my location( Iran ) i can't access them from xaar directly
thanks amir.anoosheh@yahoo.com]]> amir General Wed, 02 Mar 2011 10:10:30 -0500 https://reprap.org/forum/read.php?1,26026,37164#msg-37164 https://reprap.org/forum/read.php?1,26026,37164#msg-37164
We need a system like you have on first video video. It should be possible to control with PC ink spraying processing from nozzles. Cartridge will stay at one place. Could you advice me how to start, or if you have ready kit, we can purchase it.

David]]> Datunia General Wed, 24 Feb 2010 12:03:56 -0500 https://reprap.org/forum/read.php?1,26026,36736#msg-36736 https://reprap.org/forum/read.php?1,26026,36736#msg-36736
We've got a PDF here which is a snapshot of current research:
[objects.reprap.org]

fullspeceng,
Would you like to start documenting on the wiki?]]> SebastienBailard General Sat, 20 Feb 2010 13:02:41 -0500 https://reprap.org/forum/read.php?1,26026,36720#msg-36720 https://reprap.org/forum/read.php?1,26026,36720#msg-36720
I am building a custom application based on the hp51604a inkjet cartridge. Since the Parallax kit is no longer available, I am starting from scratch with the drivers and hardware.

I was wondering if anyone has a copy of the files that went with the Parallax kit. I am most interested in the font files, as I would like to avoid recreating it if at all possible. If yes, could you please drop me an email? Perhaps we can work something out to our mutual benefit.

Cheers,
Ken
ken_ihara@hotmail.com]]> ki15686 General Sat, 20 Feb 2010 07:51:28 -0500 https://reprap.org/forum/read.php?1,26026,26491#msg-26491 https://reprap.org/forum/read.php?1,26026,26491#msg-26491 Most colornames are browserspecific (except white, blue, black, red, yellow and green)

keltor, you can overwrite that sort of colorschemes with your webbrowser
In opera it's called user-css and in Firefox you would neeed a plugin to edit or disable the css

'sid]]> sid General Wed, 19 Aug 2009 05:54:30 -0400 https://reprap.org/forum/read.php?1,26026,26483#msg-26483 https://reprap.org/forum/read.php?1,26026,26483#msg-26483
Not sure why but we will look into it.]]> fullspeceng General Wed, 19 Aug 2009 01:31:54 -0400 https://reprap.org/forum/read.php?1,26026,26454#msg-26454 https://reprap.org/forum/read.php?1,26026,26454#msg-26454 -------------------------------------------------------
> I don't think international shipping should be
> that difficult. I order things from ledshoppe.com
> all the time. It's amazing how I can buy a usb
> bluetooth adapter and have it shipped from Hong
> Kong for $3 shipping included!
>
> They just use paypal for money and I don't see why
> you can't do the same next time.

Do you think you will ever fix the color scheme on your website? Black text on Dark Blue backgrounds is not fun.]]> keltor General Tue, 18 Aug 2009 11:55:11 -0400 https://reprap.org/forum/read.php?1,26026,26194#msg-26194 https://reprap.org/forum/read.php?1,26026,26194#msg-26194
They just use paypal for money and I don't see why you can't do the same next time.]]> fullspeceng General Tue, 11 Aug 2009 18:26:32 -0400 https://reprap.org/forum/read.php?1,26026,26185#msg-26185 https://reprap.org/forum/read.php?1,26026,26185#msg-26185
Next time i'll mail my sister (she lives near NewYork) what i'm interested in, so she could bring it with her next time visiting

Viktor]]> VDX General Tue, 11 Aug 2009 14:39:17 -0400 https://reprap.org/forum/read.php?1,26026,26157#msg-26157 https://reprap.org/forum/read.php?1,26026,26157#msg-26157 fullspeceng General Mon, 10 Aug 2009 20:03:42 -0400 https://reprap.org/forum/read.php?1,26026,26155#msg-26155 https://reprap.org/forum/read.php?1,26026,26155#msg-26155
Viktor]]> VDX General Mon, 10 Aug 2009 16:16:33 -0400 https://reprap.org/forum/read.php?1,26026,26152#msg-26152 https://reprap.org/forum/read.php?1,26026,26152#msg-26152
You could hack it and maybe it will work but then no one else is going to be able to reproduce your results.

My goal is just to provide an easy source for the holders and possibly make a pcb for others to use.

The current PCB is so simple that you can breadboard it except the FFC connector pitch is tiny and better to be on a pcb.

Again, the goal is to encourage experimentation. You can buy an ink head from amazon for $13 and solder the wires directly to the head if you really want to be cheap but you will need very steady hands.

I haven't tried anything but HP ink but I encourage other people to do so.]]> fullspeceng General Mon, 10 Aug 2009 13:21:38 -0400 https://reprap.org/forum/read.php?1,26026,26151#msg-26151 https://reprap.org/forum/read.php?1,26026,26151#msg-26151
Until now i didn't have the HP-51604A-inkhead and tried with some others salvaged from old Lexmark and other HP-printers.

Have you already tried with other fluids than the original ink?

Viktor]]> VDX General Mon, 10 Aug 2009 12:11:00 -0400 https://reprap.org/forum/read.php?1,26026,26138#msg-26138 https://reprap.org/forum/read.php?1,26026,26138#msg-26138
[www.fullspectrumengineering.com]]]> fullspeceng General Mon, 10 Aug 2009 04:14:09 -0400 https://reprap.org/forum/read.php?1,26026,26118#msg-26118 https://reprap.org/forum/read.php?1,26026,26118#msg-26118
I also have full datasheets and manuals for the Xaar heads so I can make a product for that easily also but there needs to be enough demand for me to do so.

You can probably just use a logic analyzer and oscilloscope to figure out the signals going into another HP head like the 40 series.

[spritesmods.com] hacked such a head. However, I question his methods. In the Inkjet Applications book, it says you need to give exactly 4.5us at 24V. If you use 21V you need to give it 6us.

Spritesmod fires some inkjet some random pulse time at some voltage around 40V.

This doesn't seem very reliable to me. You can easily check out the signals with a bypass circuit but at the end of the day it isn't worth my effort when the HP 51640 works and does it is supposed to.

If you have 600x600dpix4 colors=1.44 megabits of data per square ink you need to transfer and process.

It's all doable for sure but unless you want it bad, it's probably not worth it.]]> fullspeceng General Sun, 09 Aug 2009 22:12:18 -0400 https://reprap.org/forum/read.php?1,26026,26091#msg-26091 https://reprap.org/forum/read.php?1,26026,26091#msg-26091
I know I could use two cartridges, but one would be simpler.

David]]> davidgoodenough General Sun, 09 Aug 2009 06:39:05 -0400 https://reprap.org/forum/read.php?1,26026,26061#msg-26061 https://reprap.org/forum/read.php?1,26026,26061#msg-26061
For piezoelectric heads, I'd recommend a Xaar head which can also do solvent inks but they're a lot more expensive and suitable only for a commerical product.

Go with the HP unless you want to spend a lot of money and effort.]]> fullspeceng General Sat, 08 Aug 2009 06:03:28 -0400 https://reprap.org/forum/read.php?1,26026,26060#msg-26060 https://reprap.org/forum/read.php?1,26026,26060#msg-26060 Gene Hacker General Sat, 08 Aug 2009 05:25:39 -0400 https://reprap.org/forum/read.php?1,26026,26037#msg-26037 https://reprap.org/forum/read.php?1,26026,26037#msg-26037 fullspeceng General Fri, 07 Aug 2009 18:39:46 -0400 https://reprap.org/forum/read.php?1,26026,26036#msg-26036 https://reprap.org/forum/read.php?1,26026,26036#msg-26036
Wade]]> Wade General Fri, 07 Aug 2009 18:07:19 -0400 https://reprap.org/forum/read.php?1,26026,26035#msg-26035 https://reprap.org/forum/read.php?1,26026,26035#msg-26035
It is very simple. Just get a ULN2803 chip. Hook up 24V to pin 10, gnd to pin9 and pins 1-8 to the TTL microcontroller and pins 11-18 to the inkjet head.

Each pairs of pins fires 1 nozzle.

The biggest advantage is it only requires ONE chip and a few wires. All the other circuits I have seen are outside the practical limit of the amature.

If someone can help out with the coding on a cheaper MCU like a PIC microcontroller, we can make it hook up to the standard reprap software. Just turn on/off the ink stream when you would turn on/off the extruder.]]> fullspeceng General Fri, 07 Aug 2009 17:51:56 -0400 https://reprap.org/forum/read.php?1,26026,26034#msg-26034 https://reprap.org/forum/read.php?1,26026,26034#msg-26034 www.amazon.com] ) with some circuitry and software for a HP-BW-inkjet.

I think some basics and combination wit other brands souldn't be a big problem ...

Viktor]]> VDX General Fri, 07 Aug 2009 16:36:58 -0400 https://reprap.org/forum/read.php?1,26026,26032#msg-26032 https://reprap.org/forum/read.php?1,26026,26032#msg-26032 [homemade3dprinter.blogspot.com]

(for lexmark iirc)

'sid]]> sid General Fri, 07 Aug 2009 15:36:43 -0400 https://reprap.org/forum/read.php?1,26026,26031#msg-26031 https://reprap.org/forum/read.php?1,26026,26031#msg-26031
David]]> davidgoodenough General Fri, 07 Aug 2009 15:27:55 -0400