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AssigneeRiso Kagaku Corporation
InventorsYoshiyuki Okada, Asayo Nishimura
Estimating the term…
A printing apparatus is provided with a line-type ink jet head having a plurality of blocks on each of which a set of ink ejection elements are arranged. In the printing apparatus, a drive voltage signal is accompanied with a prepulse to be applied to each ink ejection element. Particularly, drive signal adjustment values are stored in association with each block. The drive voltage signal is generated for each set of ink ejection elements with reference to the drive signal adjustment values in association with the block on which the each set of ink ejection elements are arranged. By this configuration, it is possible to reduce the differential density between the image portion printed by the imperfect block having misaligned nozzles and the image portion printed by the normal block having nozzles arranged in their correct positions throughout the density range.
A printing apparatus provided with a line-type ink jet head having a plurality of blocks on each of which a set of ink ejection elements are arranged, the printing apparatus comprising:
A method of performing a print process by a printing apparatus provided with a line-type ink jet head having a plurality of blocks on each of which a set of ink ejection elements are arranged, the ejection elements being driven by a drive voltage signal including a prepulse on the basis of data indicating the number of times of ejecting ink to each pixel, the method comprising:
Dependencies are inferred from the claim text.