Abstract: A hi-fi stamp pad comprising a pad vessel, a substrate whereupon a kind of fiber is vertically planted and thus a flock surface formed thereon, a bolster which is buried under the substrate and contained in the pad vessel whereby to hold ink for stamp use, and a ringlet compulsively rounded the inner brink of the pad vessel to set steadily the substrate upon the bolster. Being first filtered through the substrate, the ink is absorbed upward from the bolster by the flock and accordingly, appropriately wets the flock surface thereof. Once a stamp or seal touches the flock surface, the latter brushes the ink evenly upon the engraved character surface and breaks the ink surface tension built thereupon whereby to regulate the ink adhesion and to make the stamped characters very clear.

Abstract: A novel structure for a blackboard eraser is provided wherein the eraser comprises a plurality of raised rows of two or more different erasing mediums such as brushes, fiber or cloths laterally spaced and extending parallel on a base support to form an eraser body. The body is connected at its two ends to a resilient dust-collecting frame flush with the raised erasing mediums so that when erasing the blackboard with the eraser the latter completely encloses the corresponding part of the blackboard, guiding the dust along the spaces between adjacent raised rows of erasing mediums and then collecting them in the frame, thereby preventing the dust from flying about and polluting the air. A chalk container may further be formed at the lower part of the eraser for holding the chalks.