NIB UNITS FOR PENS

摘要

Fine lines, e.g. 0.5 to 0.8 mm wide, can be produced by the use of an auxiliary nib unit (16) which fits over a (main) nib on a felt or fibre tip marker (1) or on a technical pen. The auxiliary nib (20) is a friction fit in its housing (18). The marker cap (10) may contain a receptacle (14) for storage of the auxiliary nib (16). The auxiliary nib is movable axially of its housing to as to come into ink-transfer contact with the main nib irrespective of wear or distortion of the latter. The main nib (8) may be of fibrous material, and the auxiliary nib (20) may be a hollow extrudate of plastics material.