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US 4,231,048 AGranted
Ink jet recording apparatus
AssigneesYutaka Kodama, Ricoh Company, Ltd.
InventorsMasanori Horike, Koichiro Jinnai, Kyuhachiro Iwasaki
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AssigneesYutaka Kodama, Ricoh Company, Ltd.
InventorsMasanori Horike, Koichiro Jinnai, Kyuhachiro Iwasaki
Estimating the term…
In an ink jet recording apparatus including a carriage operative to move in scanning motion for printing characters and symbols on a printing surface and supporting thereon a single printing head having a plurality of ink jet nozzles or a plurality of printing heads each having a single ink jet nozzle, the printing surface is formed as a curved surface and the printing head or heads are constructed such that ink can be ejected radially with respect to the center of curvature of the curved printing surface. The vertical spacing between dots formed by ejected ink can be adjusted by moving the printing head or heads relative to the printing surface to thereby adjust the spacing between the printing surface and the printing head or heads, and the transverse spacing between the dots can be adjusted by adjusting the scanning speed of the printing head or heads or the ink ejecting timing.
An ink jet recording apparatus comprising:
An ink jet recording apparatus for recording on a receiving sheet which includes curved surfaces, comprising sheet support means having a curved sheet receiving surface, a frame support adjacent said sheet support means, a lever pivotally mounted on said frame support, a printing head carried at one end of said lever and being shiftable upon pivoting of said lever and having a plurality of nozzles for the discharge of an ink jet therefrom toward said sheet receiving surface in respective radial parts with respect to a center of curvature of said curved sheet receiving surfaces, ink reservoir means on said frame connected to said nozzle for supplying ink thereto, adjustment means associated with said lever for pivoting said lever to vary the angle of discharge of the ink jet from said nozzle, a carriage movable along the support surface, and adjustment means on said carriage mounting said frame thereon for movement toward and away from the support surface.
A method of ink jet recording on a curved receiving surface using a plurality of ink jet nozzles which are arranged to direct an ink jet toward the receiving surface along radial paths from a common center comprising adjusting the vertical spacing between the dots formed on the printing surface by varying the distance between the nozzles and the printing surface.
Dependencies are inferred from the claim text.