Though not wishing to sound like Measkshite non-OEM inks may not
be formulated to prevent drying out, they may just be a carrier with dye
and little else.
Hobbicolor inks may be typical of aftermarket inks formulated for Canon
printers. On their web site I believe they mention some of the additives
that are in their inks. I believe that the quality aftermarket inks have
additives to prevent growth of microorganisms, prevent drying in the cart
and head, and speed drying once applied to the paper. In addition,
viscosity is carefully controlled. Water and dye with no additives would
definitely create problems.
Those of us who use aftermarket bulk refill inks or prefilled carts
shouldn't forget that Canon OEM ink works really well and is basically the
yardstick against which the aftermarket inks are measured. I just won't pay
the price when the inks I use make beautiful prints and haven't faded so far
under the conditions that I display or keep them. Some people may like the
color response of some of the aftermarket inks over OEM - prints made with
Hobbicolor inks don't have the oversaturated appearance of Canon OEM. MIS
is extremely close to the OEM color response.