Beginner questions


#1

My printer is an Epson Stylus Pro 3800

  1. What does “priming” the cartridge do? Why is it necessary? What function do the exit chambers have?
  2. How is it that ink does not leak outside of the air intake hole when the cart is depressurized by the printer?
  3. Because the ink is not secured inside a mylar bladder (unlike Epson OEM carts), should I worry about trapped air degrading and oxidizing the ink or trapping air bubbles inside assembly tubes?
  4. What events cause the controller chip to reset the cart’s LCD panel displayed ink level to full status? Turning on/off the power button? Doing a MK to PK black ink swap? Doing a nozzle check, etc.?
  5. If I use both OEM carts and refillable carts together, will the LCD-displayed ink level of the OEM carts always report the correct ink level, or do all carts reset to full when any one cart is reset?
  6. The instructions say not to drain a OEM cart below 15% full before harvesting its computer chip. Because the printer always leaves 15% of ink inside the OEM cart, even when the LCD display reads empty 0%, does that mean I may harvest the chip when the LCD panel reads 0%, or must it show greater than 15%?
  7. The instructions say to run three power clean cycles when using a refillable cart for the first time. Does this rule apply if i use OEM ink inside the refillable carts instead of third-party ink?
  8. Why is priming the refillable cart not necessary after topping off the cart with ink? Doesnt topping off the cart introduce air that must then be sucked out by priming?
  9. Shouĺd i remove the air intake hole plug before or after I fill the cart with ink for the first time? Before or after I prime the cart? Before or after I top off the cart after its been used.
  10. Can I see how full the cart is from the cart’s label side without removing the cart from the cart bay?

Thank you.


#2

What does “priming” the cartridge do? Why is it necessary? What function do the exit chambers have?

This is to keep air from blocking the ink from exiting the exit valve. It’s also to keep air from entering your print-head. There is a small amount of air that needs to be primed out of the cartridge before first insertion.

How is it that ink does not leak outside of the air intake hole when the cart is depressurized by the printer?

The carts are shaped in such a way so that ink will not get to the air intake pressure hole.

Because the ink is not secured inside a mylar bladder (unlike Epson OEM carts), should I worry about trapped air degrading and oxidizing the ink or trapping air bubbles inside assembly tubes?

No, it pressurizes from top. This printer and ink system can have air exposure without problems.

What events cause the controller chip to reset the cart’s LCD panel displayed ink level to full status? Turning on/off the power button? Doing a MK to PK black ink swap? Doing a nozzle check, etc.?

3880 control chips sit above epson OEM chips on these carts. The will always read full (as written in the instructions). You must periodically check the level on semi-translucent cart and top off.

If I use both OEM carts and refillable carts together, will the LCD-displayed ink level of the OEM carts always report the correct ink level, or do all carts reset to full when any one cart is reset?

These carts do not need “reseting” due to always reading full. The OEM cartridge will show the amount of ink though. All others will read full as described in the instructions.

The instructions say not to drain a OEM cart below 15% full before harvesting its computer chip. Because the printer always leaves 15% of ink inside the OEM cart, even when the LCD display reads empty 0%, does that mean I may harvest the chip when the LCD panel reads 0%, or must it show greater than 15%?

No. 15% of the cartridge chip level (not actual ink in cartridge). That said, you can get away with having OEM chips in there that are under 15%.

The instructions say to run three power clean cycles when using a refillable cart for the first time. Does this rule apply if i use OEM ink inside the refillable carts instead of third-party ink?

It does not apply if using OEM ink.

Why is priming the refillable cart not necessary after topping off the cart with ink? Doesnt topping off the cart introduce air that must then be sucked out by priming?

Priming is only on first fill to get the air out of the outlet stem. It is then filled with ink ever after.

Shouĺd i remove the air intake hole plug before or after I fill the cart with ink for the first time? Before or after I prime the cart? Before or after I top off the cart after its been used.

Follow the instructions. They can be viewed in the Instructions tab at the bottom of every inkjetmall product.

Can I see how full the cart is from the cart’s label side without removing the cart from the cart bay?

Generally you can see how full it is from the back if you hold an iPhone flashlight up to it.


#3

2: How is it that ink does not leak outside of the air intake hole when the cart is depressurized by the printer?
Check out the clear side of the cartridge. The big voids that you see are ink capture wells. If any ink happens to get into the air vent (hard since the port is in the upper right of the cart), it will be captured in these voids.

4: What events cause the controller chip to reset the cart’s LCD panel displayed ink level to full status? Turning on/off the power button? Doing a MK to PK black ink swap? Doing a nozzle check, etc.?
It seems to be random. You may see the ink use tick down a bit (especially after a cleaning), but then will reset when you check it again.

6: The instructions say not to drain a OEM cart below 15% full before harvesting its computer chip.
If you’re using the chips in the refillable cartridges, they don’t care. If you have a chip resetter and want to reuse the OEM cartridges, you’ll have to reset them before they read 15% or less. AFAIK, the resetters also require you to insert a full-reading cartridge before inserting the reset cart.

7: …power cleans
I swapped out OEM with ConeColor one at a time as my OEM carts ran out. No issues or color problems to my eyes. 3 power cleans will guarantee you have completely swapped the ink in your lines but seems silly unless you’re doing Piezography.

10: how full
I suggest removing the ink cover. That way you can take a glance at anytime without having to pause. Do this by bending the right side of the lid near the hinge. Once that pops out, it’s easy to remove. You’ll need to cut a piece of cardboard to match the latch mechanism and stick it into the latch so the printer thinks it’s closed.