Search found 17 matches
- Sun Nov 19, 2023 9:01 pm
- Forum: 3DP printing
- Topic: Ricoh printheads
- Replies: 16
- Views: 47741
- Sun Nov 19, 2023 8:56 pm
- Forum: 3DP printing
- Topic: Ricoh printheads
- Replies: 16
- Views: 47741
Re: Ricoh printheads
You use a drop watcher to check on the drop formation while jetting, This is how you tweak the ink formulation as well as the firing waveform. Inkjet manufacturers keep everything secret since they want complete control of the entire system from fluids to heads and software. Approval for your ink to...
- Sun Nov 19, 2023 8:36 pm
- Forum: 3DP printing
- Topic: Ricoh printheads
- Replies: 16
- Views: 47741
Re: Ricoh printheads
Now you are finding out how Xaar makes money from charging you to have a waveform placed into the heads flashrom. The heads used for UV inks are the models with built in heaters. You can run UV inks through unheated heads like you might see with the modified Chinese Epson UV desktop printers but the...
- Mon Aug 10, 2020 11:09 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2943002
Re: Hacking the HP45
For using aqueous look at the older Epson piezo heads.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC507883/
This paper has all the drive specs.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC507883/
This paper has all the drive specs.
- Mon Aug 03, 2020 1:46 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2943002
Re: Hacking the HP45
We used to put solvent through the HP45's and the Lexmark TIJ. Mostly ethanol/methanol. What are trying to do with acetone and powdered plastics? Solvent weld plastic powders? Acetone has a pretty high vapor pressure so it will dry in the heads if left uncapped. I can supply you with UV curable bind...
- Tue Jul 28, 2020 7:10 pm
- Forum: 3DP printing
- Topic: Hacking the Xaar 128 printhead
- Replies: 365
- Views: 1365622
Re: Hacking the Xaar 128 printhead
You will not only need pinouts but all the timing diagrams. They far more complex than the xaar 128 heads. But you can program the firing wave forms.
- Thu Jul 23, 2020 4:01 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2943002
Re: Hacking the HP45
@nicolasgr
The Xaar 128's can print a binder for sand or other powders. It just can't be aqueous since it is a shared wall design the fluids can not be conductive.
The Xaar 128's can print a binder for sand or other powders. It just can't be aqueous since it is a shared wall design the fluids can not be conductive.
- Sat Jul 18, 2020 8:19 am
- Forum: 3DP printing
- Topic: Hacking the Xaar 128 printhead
- Replies: 365
- Views: 1365622
Re: Hacking the Xaar 128 printhead
@yeswanthnag
Do you have apart number? Why the KM heads? I'd look at Ricoh for reliability.
Do you have apart number? Why the KM heads? I'd look at Ricoh for reliability.
- Sat Jul 18, 2020 8:03 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2943002
Re: Hacking the HP45
@nicolasgr
The HP45 cartridges are only good for about 1-2L of fluid before they start dropping nozzles. You won't be able to print a very large sand mold or core using them unless you have lots of them.
The HP45 cartridges are only good for about 1-2L of fluid before they start dropping nozzles. You won't be able to print a very large sand mold or core using them unless you have lots of them.
- Thu Jul 02, 2020 3:29 am
- Forum: 3DP printing
- Topic: Hacking the Xaar 128 printhead
- Replies: 365
- Views: 1365622
Re: Hacking the Xaar 128 printhead
@ BlueTurtle
You want the ink at a slight negative pressure entering the heads. -100 to -800 Pascal.
You want the ink at a slight negative pressure entering the heads. -100 to -800 Pascal.