| 摘要 |
Wear indicating means are located on the head or frame of a disposable razor or razor cartridge, in close proximity to the shaving edge of the blade. The wear indicating mans comprises a mass of material that gradually wears away as the disposable razor or cartridge is used in shaving, the amount of material wearing away being correlated with the amount of wear on the blade edge to provide a visual indication of the relative wear on the blade. Preferably, letters or indicia are provided on the head or frame and are covered with said material, the letters or indicia being revealed as the material is worn away during shaving. The letters or other indicia may be printed or painted directly on the frame, or may be provided as raised protrusions or as depressions formed in the frame. Alternatively, the wear indicating means may comprise a strip of material formed of two contrastingly-colored layers, each being wedge-shaped and facing opposite directions, so that increasingly more of the lower layer is revealed as the strip is worn away. Markers may be provided on the frame or head adjacent the strip to cooperate with the strip to provide a visual indication of the relative wear on the blade. Alternatively, a layer of material of uniform thickness may be provided between two wedge-shaped layers, said middle layer being of a color contrasting with the color of the other two layers, so that as the strip is worn away, the revealed edge of the middle layer appears to move horizontally along the strip.
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