I have also run into Expiration dates causing cartridges to fail. If you install an outdated cartridge it ill fail. Not sure if that's the case in your situation, but the solution would be to not stock alot on the shelf too long.
Like I said, maybe not your issue, but one other thing to watch out for.
Mike
Michael Wilson | Prepress Technician
Associates International | 100 Rogers Rd, Wilmington DE 19801
Phone: 302.656.4500 Ext.188 | Fax: 302.656.4890
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