Archived posting to the Leica Users Group, 2011/08/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The solvents also coagulate as they age, particularly if the cartridge has been opened/used. Eventually you have a cartridge with a settled mass of solid pigment and a coagulated mess of solvent, all stuck in there, impossible for the printer to get out. Marty On Wed, Aug 17, 2011 at 7:04 AM, Geoff Hopkinson <hopsternew at gmail.com> wrote: > The pigment is in suspension while in your cartridges of course. Only after > it is distributed in micro droplets on an appropriate medium can it be > absorbed into the surface and the carrier dissipate. You can test its > persistance once partly dried by just not using your printer enough. The > residue remains perfectly preserved as an immovable mass in half of the > printheads ;-) > > Cheers > Geoff > > *Izzy for Prime Minister!* > *Model superstar* > ** > > > > On 17 August 2011 05:29, Mark Pope <mark at whitedogs.co.uk> wrote: > >> What I don't understand is why these inks have a 'best before' date. ?If >> the pigments are designed to last for many decades, then this doesn't make >> sense. ?But then, even table salt has a best before date these days :-| >> >> >> >> >> Mark Pope, >> Swindon, Wilts >> UK > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >