I'm not the person who could be called an specialist, but would like to share with you my practice regarding to reprofiling frequency. Normally, when I finish profiling and finetuning a given combination of printer, paper and ink, I print a small selection of standard pictures and archive them with the utmost care. Every 6 months, or even earlier if I suspect there is any difference caused by a new batch of ink or paper, I print those same images again, wait them to dry and, finally, compare each other by naked eye. I only proceed with a new profiling if If there's any visible difference. That way I save paper, ink, time and effort, while having things in reasonable control. I know this is not the most-scientifically proof method of control, but it's enough for my demands. If more control is needed, someone could do the same with a higher frequency (would say every 2 or 3 months), and/or on every new purchase of paper/ink.
Regards.
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2010/9/19 ed_limmy
<ed_limmy@...>
Does anyone have an opinion if it would be necessary to profile again after some new ink carts have been replaced with new ones? Surely there may be some differences in batches or wavering quality control. I've had same paper brand, model but different batches printing differently. So i now buy as much of a batch as i can afford in order to avoid profiling again.