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Printing moving substrates

A substrate and print head technology, applied in printing devices, printing, etc.

Active Publication Date: 2012-03-14
AGFA NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This system can only be used to handle flexible substrates such as paper

Method used

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  • Printing moving substrates
  • Printing moving substrates
  • Printing moving substrates

Examples

Experimental program
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Embodiment Construction

[0079] Figure 1 schematically shows an inkjet printer 2 having a stationary printhead assembly 4 which is placed on a continuous rigid sheet substrate 16 as the substrate is moved across the printer by a conveyor system 10 past the printhead assembly 4, 16', 16" ink drops are printed. For single-pass printing, the substrate moves across the printer only once through the printhead.

[0080] The first conveyor 6 moves the unprinted substrate 16' towards the conveyor system 10; the second conveyor 8 moves the printed substrate 16" away from the conveyor system; the conveyors 6, 8 include conveyor belts, and of course other devices can be used. Substrates are loaded and unloaded from the conveyors 6, 8 by conventional methods.

[0081] The transport system 10 is arranged to provide precise movement of the substrate 16 through the printhead arrangement 4 . The length of the transport system 10 in the printing direction and the width of the transport system perpendicular to the pri...

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PUM

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Abstract

An ink jet printing apparatus for printing on a moving substrate (16) is described. The apparatus comprises ink jet printheads (4) for printing on a surface of the substrate, a plurality of rollers (12, 14) arranged to move the substrate (16) relative to the printheads 4, and a pressure source (22). The pressure source (22) is arranged to apply a negative gauge pressure (32) to the substrate (16). The application of the pressure can hold the substrate flat and can reduce undesired movement of the substrate relative to the rollers (12, 14). The apparatus allows for high quality full colour images to be printed onto substrates in a single pass using an ink jet printer.

Description

technical field [0001] The present invention relates to printing. The present invention finds a particular application, but not limited to, printing on moving substrates. The preferred examples relate to inkjet printing, and in particular to transport systems and methods for moving substrates in inkjet printers. Background technique [0002] The following description refers to the example of single-pass inkjet printing: the substrate is only allowed to pass once through the printhead arrangement. [0003] Inkjet printing has certain advantages over other printing methods, such as allowing rapid changeover of images. However, it has trouble printing high-quality images. [0004] Conventional printers (such as lithography and flexography) are capable of printing high-quality full-color images on continuous fabrics and paper, however, this has been somewhat difficult to achieve with existing inkjet printing technologies. [0005] In the process of inkjet printing, for examp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J11/00B41J13/14B41J13/12
CPCB41J13/14B41J11/0085B41J13/12
Inventor 理查德·威廉·伊夫
Owner AGFA NV