Abstract: To a power tool main body to which a main body spindle rotationally driving a tip tool is provided, a dust collection adapter for collecting dusts generated when a material to be ground is processed by the tip tool is held thereto. The dust collection adapter includes: a dust collection fan rotationally driven by the main body spindle; and a dust collection cover for containing the dust collection fan and covering a diametrical outside of the tip tool. The dust collection fan includes: a fan main body to which a plurality of blade portions are provided; and a threaded shaft portion provided to a center portion of the fan main body. To the threaded shaft portion, a female thread portion thread-coupled to the main body spindle and a male thread portion thread-coupled to a fastening thread member for fixing the tip tool are provided.

Abstract: A paper ejection apparatus equipped on the latter stage of an image formation apparatus in a print apparatus. The paper ejection apparatus includes a paper stack table to stack papers transported in a paper transport direction from the image formation apparatus, a table drive for moving up and down the paper stack table, a controller for controlling the table drive, top face detection means for detecting the top face position of the stacked papers, and abutment members for sliding to align the papers ejected onto the paper stack table in the paper transport direction and in a perpendicular direction to the paper transport direction. The projecting part is provided on the paper stack table.

Abstract: A paper ejection apparatus equipped on the latter stage of an image formation apparatus in a print apparatus. The paper ejection apparatus includes a paper stack table to stack papers transported in a paper transport direction from the image formation apparatus, a table drive for moving up and down the paper stack table, a controller for controlling the table drive, top face detection means for detecting the top face position of the stacked papers, and abutment members for sliding to align the papers ejected onto the paper stack table in the paper transport direction and in a perpendicular direction to the paper transport direction. The projecting part is provided on the paper stack table.