This seems to be a problem of HAL. HAL should not unregister (remove kernel module, device files, ...) a printer when it goes only into standby mode.
It can also be a kernel problem. Perhaps the kernel USB stack behaves as the printer was turned off.
This seems to be a problem of HAL. HAL should not unregister (remove kernel module, device files, ...) a printer when it goes only into standby mode.
It can also be a kernel problem. Perhaps the kernel USB stack behaves as the printer was turned off.