On 02/03/2013 08:29 AM, Marc Paré wrote:
<snip>
I wonder, how long does the ink lasts once it is in the printer. Would 
one have to consider this into the cost scheme as well? Does the disc 
labelling printer ink need to be used by a certain date before the 
inkjet ink become unusable?
Also, does the grey color come in handy for disc labelling LibreOffice 
disks? I know that you have already produced some and I am not sure if 
you are saying that the TDF/LibreOffice does not need any grey ... 
although it looks to me like it does need grey for the TDF part of the 
subline.
Cheers,
Marc
Canon printers are the only ones I have seen that use the gray.  One ink 
provider told me that people tend not to use the gray much outside of 
photos or gray-scale printing.  But, I do not know if I would say that.  
I still have not found any real documentation explaining the benefits of 
the second black and the gray ink.
I have used as much gray as the non-black colors.  There are actually 2 
types of black ink, one big one with one type of ink and one smaller one 
with a different type of ink.  Some printers would refer them as "normal 
black" and "photo black".
If you do not have a printer that uses gray, or only have one type of 
black ink, then "no worries".  I have not seen any "tri-color" ink 
printers that prints to disc media, but there may be ones still out 
there.  Most of the printers I have seen use black, magenta, cyan, and 
yellow.  Some have light cyan and light magenta.  Others have extra 
types of black or gray ink in the mix.
The "how long it lasts" or "unusable by date" is a good question. Not 
printing with any printer for an extended period will cause some 
issues.  I print a few pages with my HP PSC1410 every month or so to 
keep its ink from "drying up".  I had an old printer that had never been 
opened.  Its ink was sealed and never used, but it did not work.   So 
there are some issues with how long will the ink last in a printer if it 
is not used for a while.  I do not know.  I have never gotten to that 
point with either the Epson or the Canon inkjet printers.
I say, if you do not need to print DVD labels, you should use it to 
print color pages every so often.  That way you keep it running and 
maybe you will never find out about how "old" is "too old".
The only problem I had with the Epson Artisan was the "ink pad near end 
of life" message.  That was what told me that I should look into a new 
printer.  The ink pad is a "part" of the printing system and not part of 
the ink cartridge you get when you buy ink.  I do not know if Canon has 
something similar in their printers, but by the time such a message 
comes up, I may have used the printer for longer than my warranty [2 
years for the Canon and 1 for the Epson], so it may be time to get a new 
printer anyways.
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