Comment # 130 on bug 920937 from
There are no changes regarding the libusb-based 'usb' backend
between CUPS 2.0.2 and CUPS 2.0.3 and also the CUPS 2.0.3
/usr/share/doc/packages/cups/CHANGES.txt file does not provide a hint
that a change in CUPS could be the reason why it now work for you.

In comment#128 I wrote intentionally "something else" because
currently I cannot imagine know what could be the actual reason
why it now works for you.

My blind guess is some lower-level USB-related software
like libusb-1_0-0 or the kernel. But from their rpm changelog
output I cannot imagine whether or not a change therein could
be the actual reason why it now works for you.

FYI regarding why "libusb-1_0-0":
On my 20150630 Tumbleweed system (cf. comment#125) I get
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# ldd /usr/lib/cups/backend/usb | grep libusb
libusb-1.0.so.0 => /usr/lib64/libusb-1.0.so.0 (0x00007fcb5c916000)

# rpm -qf /usr/lib64/libusb-1.0.so.0
libusb-1_0-0-1.0.19-3.3.x86_64
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