Thermal plate making apparatus
AssigneeRicoh Company, Ltd.
InventorsYasumitsu Yokoyama, Mitsuo Sato
Life of this patent
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Abstract
A thermal plate making apparatus including a thermal head having a plurality of heating elements arranged in a line. Each element has a shape having substantially four corners. And a protruding portion for enhancing heat generation is formed at each of at least two diagonal corners of the element.
Claims5
A thermal plate making apparatus for forming a thermal stencil through which ink passes via holes in said stencil, the stencil advanced intermittently so as to be fed a predetermined distance a time, said apparatus comprising:
- a thermal head including a plurality of planar heating elements arranged side-by-side in a direction perpendicular to an advancing direction of the thermal stencil,
- wherein in a plane which extends parallel to the planar heating elements, each of said planar heating elements has a pair of parallel opposite sides separated from each other in a direction perpendicular to the direction of stencil advancement, and
- top and bottom portions separated from each other in the direction of stencil advancement, said top and bottom portions being substantially V-shaped portions which protrude inwardly toward a center of each of the planar heating elements.
A thermal plate making apparatus for forming a thermal stencil through which ink passes via holes in said stencil, the stencil being advanced intermittently so as to be fed a predetermined distance at a time, said apparatus comprising:
- a thermal head including a plurality of planar heating elements arranged side-by-side in a direction perpendicular to an advancing direction of said thermal stencil,
- wherein in a plane which extends parallel to the planar heating elements, each of said planar heating elements has substantially parallel top and bottom sides separated from each other in said direction of stencil advancement, and opposite side portions are parallel to each other and separated in a direction perpendicular to the direction of stencil advancement, said side portions having rectangular cut-out notches formed at a center portion thereof extending inwardly toward a center of each of the planar heating elements.
Dependencies are inferred from the claim text.