Oce-technologies B.v.

André Van Doorn

Clemens T Weijkamp

Jacob Albert Westdijk

Eduard Theodorus Hendricus De Grijs

Marius P J J R Ponten

Marwijn P T Christiaans

A printer containing at least one support for a roll of printing paper web, a printer station including a print head, means for conveying the printing paper web from the roll to the printer station, driving means adapted for selectively driving the conveying means in a downstream conveying direction or an upstream conveying direction, a cutting station downstream of the printer station for cutting the printing paper web, means for detecting the passage of an end location on the end portion of the printing paper supplied from the roll and conveyed in the downstream direction to the printer station, controlling means for controlling the print head including means for entering and storing a printing job, the controlling means further including means for receiving a signal from the detecting means indicating the passage of the end location of the roll of the paper web and then to interrupt the printing job and to deactivate the driving means so as to hold the printed paper web upstream of the cutting means for a drying period, and after that drying period to operate the driving means again for conveying the dried paper web portion located upstream of the cutting means in the upstream direction to discharge it from the printer.

Automatic printer for roll of paper web

A method of printing pixel images on a sheet or web of paper using an ink-jet printer, said printer having a print head which reciprocates across the sheet or web of paper along a first path in a first direction and along a second path in a second, opposite direction, wherein the pixel image consist of a plurality of pixels located adjacent to each other as viewed in said first and second directions, including first and second pixels to be placed at the leading or upstream edges of the image in question as considered in the first and second directions, wherein the print head is controlled to discharge an ink droplet for forming the first and second pixels only when moving in the first and second directions, respectively and is repeated over the image.

Method of printing

A method of printing a substrate with ink drops, image-wise, utilizing an inkjet printing device containing at least one print head provided with at least one row of nozzles, the substrate forming a regular field of pixel rows and pixel columns, the resolution of the pixel columns being equal to the resolution of the row of nozzles, wherein a first printing stage is initiated in which a strip of pixel rows is provided with ink drops, whereafter the print head is displaced in a direction substantially parallel to the pixel columns, and a second printing stage is initiated in which the strip is provided with supplementary ink drops, wherein the print head is displaced over a distance such that the same is substantially equal to the width of one pixel row.

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Helmond, Netherlands

André Van Doorn