Some ARC chips will lose ink levels when they are powered down. Most newer ones do not anymore. Some vendors call these newer chips COC. Pretty much all the newer ARCs will not lose ink levels anymore even when the printer is turned off.
From a series standpoint, the last older types ended in the 220/221 series printers. In the 225/226 I noticed they started changing, but despite that, since proper resetters are available for this generation, these should be avoided and a resetter used.
From a series standpoint, the last older types ended in the 220/221 series printers. In the 225/226 I noticed they started changing, but despite that, since proper resetters are available for this generation, these should be avoided and a resetter used.