US 2016/0075155 A1 · PRINTING APPARATUS AND PRINTING METHOD

Abstract

In printing apparatus, an edge sensor detects a serpentine amount caused by transportation of a web. A predicted waveform data generating unit generates predicted waveform data on the serpentine amount to be produced in the following web in accordance with actually measured waveform data on the detected serpentine amount. A correcting unit corrects a printing position of an image in accordance with a shift amount, and applies a corrected printing position to a printing head. Here, the shift amount is determined with the shift amount determining unit in accordance with the predicted waveform data. Accordingly, the shift amount is determinable in accordance with the actually measured waveform data on the serpentine amount detected with the edge sensor more accurately than that through a method in which a shift amount is directly determined. This allows suppressed misregister.

Claims9

Dependent claims

A printing apparatus printing an image onto a web, the printing apparatus comprising:

a transport mechanism transporting the web;
a printing head printing the image onto the web to be transported;
a serpentine amount sensor detecting a serpentine amount caused by transportation of the web at a position where the printing head is disposed or a position therearound;
a predicted waveform data generating unit generating predicted waveform data on the serpentine amount to be produced in the following web in accordance with actually measured waveform data on the detected serpentine amount;
a shift amount determining unit determining a shift amount of a printing position of the image to be shifted in a width direction of the web, intersecting a transportation direction of the web, in a direction in which the predicted serpentine amount is decreased in accordance with the predicted waveform data;
and
a correcting unit correcting the printing position of the image in accordance with the shift amount and applying a corrected printing position to the printing head.

4 more elements

Dependencies are inferred from the claim text.

Printing apparatus and printing method

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Printing apparatus and printing method

Life of this patent

Abstract

Claims9