Hacking the Xaar 128 printhead

Powder and inkjet printing
Restani
Posts: 16
Joined: Fri Aug 11, 2017 12:08 pm

Re: Hacking the Xaar 128 printhead

Post by Restani »

Sorry I did something wrong in the previous post
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osc_01.jpg
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davidk
Posts: 75
Joined: Sun Mar 12, 2017 6:48 pm

Re: Hacking the Xaar 128 printhead

Post by davidk »

It looks like either you have a faulty SPI pin , it's shorted or you did not configured it as output from Arduino.

Restani
Posts: 16
Joined: Fri Aug 11, 2017 12:08 pm

Re: Hacking the Xaar 128 printhead

Post by Restani »

Hi,

I have bad connector!
New image:
Upper: MOSI
Lower: SCK (131,5 KHz and 4,4V)
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osc_02.jpg
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isaac
Posts: 4
Joined: Sat Apr 28, 2018 10:08 am

Re: Hacking the Xaar 128 printhead

Post by isaac »

Hello to all
Those who can set up the xaar 128 printer header would be very grateful if you could send a detailed schematic and detailed details of the project.
Especially men wonko, ivan

aengel
Posts: 35
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

Hello Isaac :

Here is a draft of the Xaar 128 project.

I invite you and all readers of this Forum to critique and flame our activities for errors. Your criticisms and flames are very valuable to us and we appreciate your feedback.

I will post the revised drawings and spreadsheet after I have received reviews.

Thank you.
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arduino 2-1.jpg
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aengel
Posts: 35
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

Sartomer, Allnex, and other uv resin manufacturers offer off the shelf resins for 3D printing. More vendors of uv resins can be found at :

http://mydirectoryservices.com/UVEB-Tec ... fault.aspx

Here are links to Sartomer's products, N3XTDIMENSION resins for 3D printing. Note that some residents of some countries will need to register with Sartomer first before downloading literature. And like many manufacturers, the website will sometimes not allow gmail, hotmail, yahoo, and other unverifiable email addresses.

https://americas.sartomer.com/litdetail.aspx?prid=30101

https://americas.sartomer.com/litdetail.aspx?prid=30110

davidk
Posts: 75
Joined: Sun Mar 12, 2017 6:48 pm

Re: Hacking the Xaar 128 printhead

Post by davidk »

Vpph and vppl can be switched by the same relay. After that relay, you may filter again the 35V for VPPL.
On my chineese head flat cable adapter all grounds are tied together. So I have the same ground everywhere and my heads are working properly with isopropanol, which by the way is very well tolerated by these heads as I saw.
I also used a dc/dc booster from 12...18V supply to 35V. Ground is common for all voltages despite Xaar recommendation. I suppose they suggested separate supplies to comply to long ribbon cables in large format printers. On my setup I have only 500mm cables so I have no issues.
I run the head with Arduino Due but I have a buffer (74HCT573) between Arduino and the head. The buffer is powered from 5V. I suggest you use it too!

Later edit: just found this: http://support.udprinter.com/Maintenanc ... Printhead/

So they say the voltage should be 30...33.5V and you should run test prints to see the optimum voltage.
What do you think?

aengel
Posts: 35
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

Here is a photo of a connector for a Xaaar that I bought from a big internet auction site.
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xaar connector photo smaller.jpg
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aengel
Posts: 35
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

Here is a first draft of a simple line schematic to excite the Xaar inkjet printhead.
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schematic.jpg
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aengel
Posts: 35
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

Here is a schedule.
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arduino 2-2.jpg
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