The same error occurs in gentoo as described here for ubuntu: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/427653 Reproducible: Always
Here are more bugs regarding to cups-1.4.1 and usb printers: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/420015 I think that cups-1.4.1 should be hard masked, until these problems are resolved.
*** This bug has been marked as a duplicate of bug 285166 ***
and for the future, please don't add arch teams to bugs yourself. Thanks.