Abstract: A projector (1) which projects a guide image (Pg). A first region above the center of the guide image (Pg) shows a perspective view (D) representing the projector (1) and a supporting device (2) supporting the projector (1). A second region on the upper right of the guide image (Pg), shows six illustrations (G1-G6) affixed with numbers 1 to 6. The six illustrations (G1-G6) respectively correspond to six adjustment items related to a supporting state of the projector (1). The six illustrations (G1-G6) indicate how a projected image changes when the adjustment items are adjusted. The perspective view (D) is an explanatory diagram for clearly showing the positions of adjustment operation units that adjust the six adjustment items of the supporting device (2). In the perspective view (D), the numbers 1 to 6 are affixed near the respective adjustment operation units in balloons.

Abstract: A recording apparatus includes: a housing which constitutes an appearance of a recording apparatus body; and an electronic substrate which is vertically disposed along an inner side surface of the housing. Here, an air supply hole and an air exhaust hole are formed on a side surface portion of the housing corresponding to a lower portion and an upper portion of the electronic substrate so that an air-flow path for external air is formed in an installation region in which the electronic substrate is provided.

Abstract: A transportation device including first and second tray portions which are stacked relative to each other, first and second transportation openings included in the first and second tray portions, respectively, and a transportation path for a material which is formed between the first and second transportation openings. The first tray portion includes a first movable tray portion which can be displaced, the second tray portion includes a second movable tray portion which can be displaced. The first movable tray portion and the second movable tray portion are configured move between a tray position where the first and second movable tray portions form a tray member for transporting the material and a housing position where the tray portions form a housing configuring member by closing the first and second transportation openings which are exposed in the tray position.