Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny Eades" <jeades1@...> wrote:
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> 
Included in the efforts have been filling with a mixture of 8 parts ammonia and 1 part alcohol and 1 part water and running nozzle checks with it to clean it. That did not work very well. Another trick was to fill it with the proper ink and plug it and then pulling out 2-3 cc of ink before inserting it into the printer. That did not work very well either. Does anyone have any other suggestions they have tried that did work?
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> Your friend in Photography,
> 
> Johnny Eades
>
A few suggestions on yours efforts to date. 

If you are talking pure household ammonia there, well that is far too much. No more than 5% diluted in distilled water. Ammonia is too harsh at strong concentrations for delicate printer heads.

You do not say how you are delivering your cleaning solution. Refillable carts? Hopefully yes and you will need to add about 10% glycol for the right viscosity so the soln stays in the carts and does not run out.

Printing nozzle checks will not be enough. You need to print purge patches or auto nozzle checks. (maybe that is what you mean anyway?) Better still use QTR to print at 100% black on the problem color.

I agree with the cleaning of the wiper. otherwise it is probable that you are just mashing gunk back into the head with the wiper at the end of each cleaning cycle.