Patent ID: 8534669

Claim:
A sheet conveyance device comprising: a support unit that supports a sheet; plural suction ports placed on the support unit; a suction unit configured to suction the sheet toward the support unit, the suction unit being connected to the plural suction ports through corresponding first channels; plural valve systems, each of the valve systems being disposed in the corresponding first channel connecting the corresponding suction port and the suction unit, each of the valve systems being openable and closable; plural valve interlocked suction ports that are to be covered by the sheet when the sheet is conveyed, the plural valve interlocked suction ports being arranged separately from the corresponding suction ports; and plural opening and closing units configured to open and close the corresponding valve systems, each of the opening and closing units being placed between one of the valve interlocked suction ports and one of the corresponding valve systems, wherein the suction unit is connected to the plural valve interlocked suction ports through corresponding second channels, wherein the first channels are different from the corresponding second channels and wherein the opening and closing units are disposed in the corresponding second channels.