adedeluca wrote:
I did a test with a very demanding file and epson only edged out canon
But and very important Epson clogs easily if not used periodically
The latest P-series Epsons clog very, very rarely. Inks and heads have evolved quite a bit since the old, original Ultrachrome inks and x600 series machines. The keys to owning a printer that does not clog are:
Use ink specifically formulated and manufactured for the exact heads in that printer... i.e.; OEM ink or an ink backed by a head replacement "no clog" warranty.
Use ink within the expiration date on the original package.
Agitate ink cartridges gently before installing them.
Use all the ink in a cartridge within the manufacturer's suggested interval... usually six months from the time you insert it into your printer. Pigments settle to the bottom of the cartridge, and either clog the heads of small printers, or clog the ink lines of wide format printers. That's why you don't let them sit idle for long, and why you discard unused ink after six months in the printer.
Print often! Inkjet printers thrive on constant use. If you cannot keep a pigment ink inkjet printer busy, use a conventional photo lab or a service bureau that does! Print at least an 8x10 each week.
Run a test pattern before printing a batch of work. Clean the heads if needed.
If you have a printer with a waste ink (maintenance) tank, keep a spare on hand.
We had a 9600 in our lab in 2003. It ran about 20 hours a day, for most of two years, without clogging. We let it sit for a couple of months over the summer, and it was clogged slightly. It was WAY over schedule for cleaning and preventative maintenance, so the service tech came in and cleaned the heads and replaced the waste ink tank. It ran for another year, until the department supervisor put some third party ink in it. It clogged on the first cartridge! THAT required a head replacement.
The 4400 we had clogged with Epson OEM ink, after sitting idle for a month. My industry friends with them say the new 4900 does not clog easily.
The questions you must ask yourself regarding Epson's newest Ultrachrome HDX printers are, "Do I want the increased color gamut, and double the print life of dye inks, at the small risk of a head clog?" AND "Will I keep ANY inkjet printer active enough to use the ink within the manufacturer's specified period of usefulness?"