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This article relates to the disposition of a resilient platen material in a thermal printer/plotter which uses roll or continuous feed paper.
English (United States)
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Captive Resilient Platen
This article relates to the disposition of a resilient platen material in a thermal
printer/plotter which uses roll or continuous feed paper.
In the above partial cross-sectional figure, thermal-sensitive paper 1 is pulled
past a thermal printhead 2 during the printing operation. Active thermal elements
3 are kept in contact with paper 1 by the pressure of the printhead 2 on paper 1
and the surface of resilient element 4. Resilient element 4 is raised above the
hard surface of a platen 5 to allow for intimate contact between paper 1 and
thermal elements 3.
During operation, the softer resilient material of element 4 is prevented from
wearing away by disposing it in a groove 6 in platen 5 to which it is bonded by
adhesive layer 7. Surface 4 is raised above hard surface platen 5 by an amount
8 sufficient to insure that the resilient material is not compressed below the
surface of platen 5.
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