Stencil printing method and stencil printer therefor
AssigneeTohoku Ricoh Co., Ltd.
InventorDaisuke Hasebe
Life of this patent
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Abstract
A stencil printing method of the present invention intentionally transfers a smaller amount of ink from an upstream print drum to a paper sheet than from a downstream print drum to the same paper sheet such that images printed on the paper sheet one above the other have the same density at the end of a printing cycle. The method obviates a density difference and the roll-up of a paper sheet ascribable to retransfer particular to a single pass, color printing system. A stencil printer for practicing the method is also disclosed.
Claims5
A stencil printer for printing a color image on a paper sheet by passing said paper sheet only once therethrough, said stencil printer comprising:
- a plurality of print drums each having a respective master wrapped therearound and spaced from each other in a direction of paper conveyance;
- and
- ink transfer adjusting means causing ink to be transferred from an upstream print drum, in the direction of paper conveyance, to the paper sheet in a smaller amount than ink transferred from a downstream print drum to said paper sheet such that a density of an ink image resulted from said upstream print drum is equal to a density of an ink image transferred from said downstream print drum to said paper sheet at an end of a printing cycle.
Dependencies are inferred from the claim text.