Al said:
Are there some models of printers that can clean the printheads better
than others? I have a Canon i350 and have used up almost all of my ink
in the process of cleaning the printheads and with wasted printouts
from clogged heads. I print about once a week and the air is dry in
the winter.
I've found HP seems to be among the best for short cleaning cycles and
not clogging.
I've had several HP inkjet models, and all of them have sat idle for
extended periods, and the carts never clogged while in the printer. In
fact, an HP printer I had sitting in a closet for a year was put back
into service. After turning it on, it hummed and clicked for about 10
seconds and promptly spit out a test page. It looked perfect and no
clogs.
I will point out that cartridges I stored outside of the printer in a
cartridge holder, have clogged a bit when stored for extended periods.
However a damp cloth fixed them up quickly enough.
My fairly new HP Deskjet 6540 has sat idle for nearly three weeks at one
point without any issues too. Turned it on and 10-15 seconds later, it
printed perfectly. The cleaning cycles are a lot quicker than the old
Canon i850 I had, that's for sure. And it seems to use a lot less ink in
the process too. I took the i850 apart to check the waste ink area, and
it was covered with ink...at least several ink tanks worth splattered
all over the area.
Are higher DPI
printers more prone to clogging?
I don't believe it's a major factor.
Do any of them have the option to
just clean the black printhead?
If any of them can, it would be the models that can print safely without
any colour carts installed. I know most, if not all, HP printers can
print just black without colour installed, and since the printhead is
integrated, it can't hurt anything by removing the colour cartridge
because the printhead is removed also.
I know the Canon i/P-series can damage their printheads if you remove
any of the cartridges. There is a backwards design flaw in the ink level
monitoring optical device that fails to properly check for installed
cartridges - the printer merely assumes an ink tank is present and full
if it can't detect a reflected signal in the bottom of the ink tank
prisms.
This design flaw means you could easily remove the colour ink tanks, and
the printer will think they're still installed and try to print without
any ink. Not a very safe system.
As for Epson and Lexmark, I don't have much first-hand experience in
their design and function, so I'll leave that to others in the group.