There is provided a printing apparatus and method which is capable of printing based on internal data stored within the apparatus or external data inputted from an external storage device, and at the same time capable of setting the enablingdisabling of an automatic power-off function. When the coupler plug and coupler socket are brought together, the locking sleeves engage and are displaced axially, such that the ball valves are moved into open positions in which a conduit of the coupler plug may be extended through the coupler plug ball valve into the coupler socket. The present invention further relates to methods for treating cancer, such as solid tumor or lymphoma or leukemia using inorganic mercury. The lifting bolts comprise a pair of bolts inserted into eyes of the flange prior to the lifting operation. Then an attenuation factor may be selected from a luma table based upon the value of the current pixel, and a second filtering coefficient may be determined based upon the selected attenuation factor and the first filtering coefficient. The wall includes diffusing-particulate homogenously distributed within the wall that in combination with varying thickness of the wall creates continuously varying diffusion.