The cost of refill ink may be inexpensive but the cost of labor is not. Refilling when a cartridge goes to empty halves the number of times the printer's cartridges are refilled if originally done as per your advice - which may be he best practice. Also, Cymark would not be spilling as much ink as as in your scenario and filling his waste pads sooner - neither a big deal as you say in the grand scheme of things. But, Cymark is paying double for a job that could be done one-half as frequently AND that manpower could be used to take care of other duties that would need to be done as well.
None of this may matter much on a small scale but Cymark has 200+ cartridge refills a day! I do not know how much he pays the person dedicated to refilling each day, but it adds up to more than the savings you mention, and the worker can do other duties in a more timely fashion.
Also, none of this matters if waiting for a cartridge to be marked empty ultimately results in poor ink outflow from dried ink in the sponge and the cartridge needs flushing or the print head malfunction. The remedies for these issues have significant labor and or parts costs.
I wonder what the cartridge and print head failure rate is for Cymark?
If you did not stop and think and analyse the implications, then I have to spell it out to you.
In Ontario the minimum wage is tor is to rise to $10.70 per four Cad soon. With a target of $15 in the future. If Cymark remuneration is higher then the cost is even higher.
First the wasteage of 0.5ml per cart is way generous. It is more likely to be in the order of 1/10 or 1/5th of this. 0.5ml of ink is a lot of ink. So the real cost of wasted ink is actually less than 3-4 cents.
At 4 mins a refill set the cost to refill from a labor standpoint far exceeds the cost of wasted ink on all 8 carts. $0.75 in labor. In business time is money and this exemplifies that.
The larger cost is the lost time in printing especially if there is a failure. The 0.75 cost in labor is very small considering that his machines are running full tilt and when refilling or attending to the printer not operating properly, the cost of lost production far exceeds the lost time. So you need to keep the printer running as smoothly as possible. That means that you need the most reliable method of refilling in any employee hands. You cannot implement practices that require specialised skills as you will with the German method. Any practice that minimises downtime is extremely important.
The topfill method does allow a very fast and easy overfill resulting in a longer cycle number of prints between refills...nearly approaching what an OEM cart would provide from new to empty not low.
You obviously have your biases but you cannot beat a topfill in speed when you are trying to overfill with the German method.
If cymark goes one more step and stops using my squeeze bottles but goes on step further and puts up an Arduino based automatic refiller where all 8 carts are filled to the exact weight with one press of a button it is viable for not too much money. The hardware is simple, all available on Ebay and the programming is actually not that hard. Load cells are not that expensive. valves are around $6 and the controller can be had for less than $20. Just need a creative engineering mind. I am currently considering a similar project to automate a few things. many home built 3d printers also use Arduino.
Finally, you have not admitted the number of failures of German refilling including, Hat and others. Now try hiring an employee and teach that method and develop the skill for it within 3-4 refills.
Stratman, I won't waste my time on this point again as you've tried to egg me on this one again. You do not print a ton of images hour after hour after hour. Before I outlined the method to not drain the cart too low, I was getting inundated with cartridge flow issues with customers after not a lot of refills. When I outlined the trick the issues fell off the cliff. With this method many many many customers get over 30 fills when printing pictures. Not just text and spot images on plain paper. Again, I am dealing with a user base in the thousands in photo printing applications which is a lot more statistically significant than a handful running AIO printers. I rest my case and wish to end my participation in this thread here.
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