not printing when a color ink tank is empty
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Hi, My printer has the capability to keep working even when some ink tanks (except pigment black) are empty. On windows it throws you a warning that there are empty tanks and you should hit ok on the printer to continue. I was in this situation the other day and the printer did not print with cups-bjnp complaining that an ink tank is empty. Interstingly, when I checked the properties of the printer I also saw that the error messasge contained printer out of paper situation, which was not the case. So, there seems to be some bug in there regarding printing when a color ink tank is empty. I'm using cups 2.0.2 with cups-bjnp 2.0.
Hi, i have the same issue, on a gentoo distribution , if i use net-print/cups-bjnp-2.0 and if my ink level are low, then i have no printing and debug shows :
the workaround is to downgrade to =net-print/cups-bjnp-1.2.1 , then everything is back OK
thx for taking this old issue in account,
Yann.
Sorry people, I completely missed this report. I have been looking into this today.
The behavior may seem a regression compared to windows, but it will protect the printhead. The Windows driver probably has a machanism to NOT print color when one of the color cartidges runs out., hence there is no risk for burning the print head. Under CUPS the backend receives an already rendered image (without information whether or not it contains color information), so continuing to print would possibly destroy the print head.
There is an error where bjnp reports out of paper instead of out of ink. This will be fixed in the upcoming cups-bjnp 2.0.3 version.