Abstract: A marking structure for various uses, such as in hand stamps or other printing members, or in ink pads, ink rolls or other inking members. The marking structure is characterized by at least two layers, including an outer layer and an underlying reservoir layer. The outer layer has interconnected aggregates of thermoplastic resin, forming a microporous network of pores, and a marking fluid contained within the network. The reservoir layer has an open-pored macroporous structure, such as an open-cell polyurethane foam, impregnated with a microporous thermoplastic resin, in the form of interconnected aggregates, and an additional amount of the marking fluid. The resin aggregates of the outer and reservoir layers are joined at the interface of the layers to form a cohesive structure.

Abstract: A cylindrical printing roller combining a rubber mat printer and a stencil printer. The rubber mat portion is inked externally while the stencil portion receives its ink from internally of the roller. The two printing forms on the roller print simultaneously.

Abstract: A marking assembly includes a cylindrical member, upon which are supported indicia marking members, and a closure cap, having an ink pad secured therewithin, adapted to be placed over the cylindrical member by means of a coupling which is substantially air-tight so as to prevent evaporation of the ink. The indicia members may be removably secured to the cylindrical member by means of a pressure-sensitive adhesive or a snap fitting so as to be readily interchangeable, and the cross-section of the members is sharply tapered so as to produce well-defined sharp images. A further embodiment of the assembly may also include a second closure cap within which is defined a well for housing a small bottle of ink.