| 摘要 |
A printing or marking apparatus (20) comprises a movable marking member (26) having at least one marking device thereon, and a stationary heating structure (170) having at least one heating element for maintaining the marking device (26) at an elevated temperature. At least a portion of the stationary heating structure (170) can be exchanged, removed or modified in order to vary the amount of heat applied to the marking device (26). In a preferred embodiment, the removable portion comprises a tubular heat pipe (184) which extends into a hollow marking roll (26), and the heat pipe may be provided in different sizes or in segments which can be added or removed as desired. The disclosed apparatus (20) is of particular utility in connection with ink compositions of the type which are solid at normal room temperatures, and which are rendered liquid or flowable at elevated temperatures. <IMAGE> |
