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Indirect inkjet printing system

An inkjet printing, indirect technology, applied in the direction of printing, printing device, inking device, etc., can solve the problems of image damage, affecting ITM, etc.

Active Publication Date: 2018-03-23
LANDA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First, the ITM operates at high temperature and the ink droplets start to evaporate affecting the ITM
The released water vapor then condenses on the cooler print head and forms droplets which eventually drip onto the ITM to damage the printed image

Method used

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  • Indirect inkjet printing system
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  • Indirect inkjet printing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A printbar 10 is shown positioned in use directly above the surface of the ITM in the form of a constant recirculation endless belt. Aqueous ink is jetted onto the surface of the ITM by a printhead (not shown) mounted on the printbar 10 as described in WO2013 / 132418. The resulting ink image is transferred by the ITM to the impression station, and in the process, it is dried to leave a tacky ink residue. At the impression site, the ink residue is transferred to the substrate, and the ITM surface is returned to the printbar 10 to start a new printing cycle.

[0025] The printbar 10 forms part of a carriage (not shown) which is supported by rollers 12 from the frame to allow the printbar to move in a direction transverse to the direction of travel of the ITM between a deployed position and a parked position. A position in which it covers the ITM, and a parked position away from the ITM, where printhead servicing can be performed.

[0026] A set of individual pr...

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PUM

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Abstract

A manifold is disclosed for introducing gas into a gap between a print head and an intermediate transfer member (ITM) of an indirect inkjet printing system. The manifold has a first gas flow path terminating in a first discharge mouth for delivering a continuous low speed gas stream and a second separate gas flow path terminating in a second discharge mouth, vertically spaced from the first discharge mouth, for intermittently delivering into the gap a high speed gas stream.

Description

technical field [0001] The present disclosure relates to an indirect inkjet printing system. Background technique [0002] The applicant has previously proposed printing systems, see eg WO2013 / 132418, in which aqueous ink is jetted at the image forming site onto an endless belt or drum serving as an intermediate transfer member (ITM). The resulting ink image is transferred by the ITM to the impression station, and in the process, it is dried to leave a tacky ink residue. At the imprinting site, ink residues are transferred to the substrate, and then the ITM surface returns to the image forming site to start a new printing cycle. [0003] Some problems have been encountered during the operation of such printing systems, where a solution has been found to blow a stream of gas (air) through the gap passed by the ink drops of the ejection nozzles of the printhead mounted on the printbar to the ITM. surface. These issues are briefly explained below: [0004] First, the ITM op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J29/377B41J2/01
CPCB41J2/01B41J29/377B41J2002/012B41J2/0057B41J2/16517B41J2202/02
Inventor H·卡林斯基A·西曼托夫Y·舍因曼D·阿克纳提E·普尔巴驰瑞
Owner LANDA