*** This bug is a duplicate of bug 872711 ***
https://bugs.launchpad.net/bugs/872711
Note that CUPS itself does not support very many printer types. It has
some sample drivers for common languages like PCL, but the mass of
printer drivers are separate packages: HPLIP, Gutenprint, foo2zjs,
SpliX, ... Drivers which are free/open source software ship with Ubuntu,
proprietary/closed-source drivers we usually cannot ship. The many Canon
printers supported out-of-the-box by the Ubuntu Linux distributions are
not CAPT-based, these are PostScript (supported by PostScript PPD files)
and PCL (supported by Ghostscript's built-in drivers and by HPIJS) laser
printers and also inkjet printers (supported by Gutenprint).
CAPT-based laser printers need a proprietary driver from Canon. This
driver does not fit very well with the many different Linux
distributions. Perhaps it is even older and did not get updated for
recent changes in the printing infrastructures. The PPA packages try to
adapt the drivers as well as possible to the recent changes in the
Ubuntu distribution.
Problem now is that the Canon driver package does not only ship a filter
to generate CAPT output from the print job data but also a CUPS backend
to communicate with Canon's printer. This backend uses the usblp kernel
module and not libusb.
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https://bugs.launchpad.net/bugs/842823
Title:
Oneiric usblp no longer loaded when USB printer is connected, printer
not recognized by the new libusb-based CUPS backend
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