A printing device comprising: a squeegee (62, 64) configured to slide on an upper surface of a stencil in which through-holes are formed; a moving device configured to move the squeegee (62, 64) back and forth along a specified direction; and a control device configured to control operation of the moving device, the control device including a spreading section configured to spread a viscous material loaded on the upper surface of the stencil in a direction in which the squeegee (62, 64) extends, which is a direction parallel to the upper surface of the stencil and orthogonal to the specified direction, by sliding the squeegee (62, 64) with a lower end of the squeegee (62, 64) contacting the upper surface of the stencil, and a printing section configured to squeeze the viscous material that was spread by the spreading section into the through-holes of the stencil by sliding the squeegee (62, 64) such that the viscous material is printed onto a board that is closely contacting a lower surface of the stencil, wherein a pressing force of the squeegee (62, 64) towards the stencil when the squeegee (62, 64) is slid by the spreading section is smaller than a pressing force of the squeegee (62, 64) towards the stencil when the squeegee (62, 64) is slid by the printing section. a squeegee (62, 64) configured to slide on an upper surface of a stencil in which through-holes are formed; a moving device configured to move the squeegee (62, 64) back and forth along a specified direction; and a control device configured to control operation of the moving device, the control device including a spreading section configured to spread a viscous material loaded on the upper surface of the stencil in a direction in which the squeegee (62, 64) extends, which is a direction parallel to the upper surface of the stencil and orthogonal to the specified direction, by sliding the squeegee (62, 64) with a lower end of the squeegee (62, 64) contacting the upper surface of the stencil, and a printing section configured to squeeze the viscous material that was spread by the spreading section into the through-holes of the stencil by sliding the squeegee (62, 64) such that the viscous material is printed onto a board that is closely contacting a lower surface of the stencil, a spreading section configured to spread a viscous material loaded on the upper surface of the stencil in a direction in which the squeegee (62, 64) extends, which is a direction parallel to the upper surface of the stencil and orthogonal to the specified direction, by sliding the squeegee (62, 64) with a lower end of the squeegee (62, 64) contacting the upper surface of the stencil, and a printing section configured to squeeze the viscous material that was spread by the spreading section into the through-holes of the stencil by sliding the squeegee (62, 64) such that the viscous material is printed onto a board that is closely contacting a lower surface of the stencil, wherein a pressing force of the squeegee (62, 64) towards the stencil when the squeegee (62, 64) is slid by the spreading section is smaller than a pressing force of the squeegee (62, 64) towards the stencil when the squeegee (62, 64) is slid by the printing section.