Screen printing device having conveyance section for discharging and introducing both the screen mask and board support member

A printing device which performs a printing process of a viscous fluid on a board fixed on a board support member by using a screen mask, the printing device comprising:

• a support member conveyance section which discharges and introduces the screen mask and the board support member;
• and
• an exchange control section which can perform a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling the support member conveyance section and can perform a support member exchange process including a support member discharge process of discharging the board support member to be discharged and support member introduction process of introducing the board support member to be introduced by controlling the support member conveyance section.