Abstract: A sensor unit according to the present invention is a sensor unit that irradiates a print surface with light and picks up an image formed by reflected light from the print surface and includes: an image pickup portion including an image pickup element and a lens fitted to the image pickup element; an illumination portion including a light-emission element and a lens fitted to the light-emission element; and a reflecting portion including at least one mirror that reflects the reflected light from the print surface in a direction having a predetermined angle with respect to the direction of the normal to the print surface. According to the present invention, a sensor unit, which is highly accurate and whose miniaturization is possible, and a print state inspection apparatus using the sensor unit are provided.

Abstract: A pleat screen includes a screen sheet having a plurality of zig-zag pleats and vertically foldable and unfoldable by an operator cord. At least one tape extends vertically through the pleats. Holders are mounted on the tape in engagement with selected ones of the pleats for supporting, from below, the selected pleats to prevent the pleats from being lowered due to their own weight when the screen sheet is vertically unfolded.