Described is a vacuum cleaner, such as a wetdry vacuum cleaner, having an improved vacuum hose storage assembly and dust pan assembly for use with a vacuum cleaner having a debris collection drum. Pulses of pressurized air are directed into a conduit having an inlet disposed within a first liquid-containing vessel adjacent to the sediment to cause a slurry of liquid and sediment to flow through the conduit into a second vessel elevated above the first vessel. An application quantity of the preprocess liquid is determined based at least on a kind of the ink, and an application quantity of the postprocess liquid is determined based at least on the kind of the ink. A carrying direction of the chip carrying mechanism when the partition plate is in an open state and a carrying direction of the chip carrying mechanism when the partition plate is in a closed state are set to be opposite directions. With vaporizable material in the interior chamber, the user would connect the electrical source powering the ceramic heating element. The level shifter circuit applies to the detection voltage a predetermined divided voltage obtained by resistance-dividing a reference voltage, to thereby level-shift the detection voltage.