Print gap adjusting device
AssigneeKabushiki Kaisha TEC
InventorsTakahisa Hirano, Masanori Takai, Mitsuhiro Taniguchi
Life of this patent
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Abstract
In forming a desired print gap between a sheet of paper fed on a platen and a print head by driving a moving mechanism for changing a space between the platen and the print head, a condition where the space between the platen and the print head becomes smaller than a predetermined value is detected, and in this case the space between the platen and the print head is increased by a driving portion for driving the moving mechanism. Accordingly, when a thin paper is used as the sheet of paper, cutting, wrinkling, etc. of the thin paper can be prevented.
Claims12
A print gap adjusting device comprising:
- a platen;
- a carrier adapted to be reciprocatively driven along an axial direction of said platen;
- a print head mounted on said carrier;
- a driving portion for driving said carrier in a direction perpendicular to said axial direction;
- minimum space detecting means for detecting a condition where the space between said platen and said print head becomes smaller than a predetermined value as a result of a thickness of a sheet of paper fed on said platen between said platen and said print head;
- and
- control means for controlling said driving portion to increase the space between said platen and said print head according to a detection signal from said minimum space detecting means.
Dependencies are inferred from the claim text.