leelarson at mac.com wrote: > The Epson cartridges have a small circuit board in the ink cartridge > that has a few bytes of RAM. The RAM contains an estimate of the amount > of ink remaining in the cartridge. When a cartridge is inserted into > the printer, the RAM is read into the printer. As the cartridge is > used, the printer "guess"timates how much ink has been squirted, and > periodically writes a new estimate of the remaining ink to the RAM in > the cartridge.
A related note from Tyler Martin Co <http://www.tylermartin.com>, a chinese-cartridge seller, concerning my 820 printer: "Epson 820 Update - We have noticed that some of you have had a problem with the 820 cartridges reading in your printers. The chip on the cartridge will read differently in different 820 printers. Our manufacturer has been working on it so please work with us on this one. This is the first big challenge with chip cartridges since their inception. They have fixed the problem, and our new batch of cartridges is working great. If you are having problems getting your cartridges to read in your Epson 820 then please e-mail us so we can take care of the problem." I wonder what they mean by the cartridge "reading". Probably refers to the level of ink that shows in Epson Printer Utility. Allan Atherton | The next meeting of the Louisville Computer Society will | be January 28. The LCS Web page is <http://www.kymac.org>.
