developer change questions

[danielcooke]

Hello

Just looking at changing my developers... the machine is a 2300n done about 35k colour but they are around 3years old at a guess... how many years do they normally last? does the kits have an expiry date?? should I only buy fresh stock? or can I do an ebay buy to save money?

thanks

daniel

[blackcat4866]

Re: developer change questions

Personally, I'd stay with fresh developer. Five years of sitting on a shelf can render developer useless.

You'll get the best possible developer yield printing high volumes. At low volumes you'll need to change developer more often, especially when toner density starts to vary.

I need to back up a little. Developer is a mixture of ferrite (or starter) and toner. The proportion of ferrite to toner must stay the same within a few percent to maintain image quality. As developer fails is can become overtoned (too much toner), or undertoned (too little toner). The fix for both situations is the same. =^..^=