ferruccio levi said:
If I remove and insert again a cartridge detected as empty, it is detected
as empty again.
The final weight of the "empty" cartridges were as follows:
yellow: 532 g
magenta: 543 g
cyan 541 g
Toner filling in a replacement cartridge is about 110 g; EPSON states that
orignal cartridges are filled with 1/3 of replacement ones; that is about 37
g of toner; then the "empty" magenta cartridge should be still filled,
apparently, with at least 11 g, that is about 30 %.
I have found some useful information from
www.refilltoner.com when I
bought a trial refill kit.
First point - an empty toner cartridge weighs 500 grams - I can
confirm this as I have just completely emptied the original black
cartridge - I got far less from it (2317 total, 987 black and 1330
colour) than you did but this may be a difference between my printer,
which is the C1900 and your c900 although both use the same cartridge
- Epson are getting meaner, maybe.
Second point - the cartridge can be returned to 'full' by
repositioning a lever - its a slightly complicated procedure but, when
you buy a toner refill, you get the full info - the web site maybe
doesn't give as much info as I recall.
This particular supplier of toner allows you to fill at half cost and
you of course get the full cartridge 'life' of 4500 pages for the
C1900 (according to Epson) - maybe by fully emptying the cartridge
you'll get more.
Unfortunately, for this discussion, I haven't yet done a refill - I
had a spare replacement black in readiness - so I can't say more about
how this refill operation goes. One thing is clear and that is that
if you don't fully empty the cartridge, and use the full recharge by
emptying the new toner container, you can get jams.
As for print quality, there is no comparison between a top grade
inkjet and these Epson 600 dpi printers. If you print landscape
pictures you immediately see the lack of smooth gradation in cloud
formations. However, for family pics taken with a digicam, its great
to churn out good-looking portraits, etc, full A4, on cheap paper, and
the printing takes less than 30 seconds per page.
I would love to know how much better the C4000 performs, with its 1200
dpi resolution, but I suspect that gradation will still be a problem.
Oh, and the other thing which is important for me is that when I make
a book (I do them in A5 page size, 2 each side of an A4 sheet), the
laser images won't (I hope, its still too early to be certain) 'print
across' as do inkjet pics.
Hope this helps.