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Ink jet printing

A technology of inkjet printers and inks, which is applied in printing and other directions, and can solve problems such as difficulty in accessing specific components during maintenance or repair

Inactive Publication Date: 2010-11-24
VIDEOJET TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the presence of multiple lines inside the ink supply area of ​​the cabinet makes it difficult to reach specific components for maintenance or repair

Method used

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Examples

Experimental program
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Embodiment Construction

[0037] Now refer to the attached figure 1 , the ink is delivered under pressure from the ink supply system 10 to the printhead 11 and back via flexible tubes that are bundled together with other fluid tubes and electrical wires (not shown) into what is known in the art as an "umbilical" tube 12 . The ink supply system 10 is located in a cabinet 13, which is typically table-mounted, and the printhead 11 is arranged outside the cabinet. In operation, ink is drawn by the system pump 16 from the ink reservoir 14 in the mixing tank 15, and the tank 15 is topped up with ink and make-up solvent from replaceable ink and solvent cartridges 17, 18 as required. Ink is delivered under pressure from ink cartridge 17 to mixing tank 15 as required, and solvent is drawn in from solvent cartridge 18 by suction pressure, as will be explained.

[0038] As will be understood from the following description, ink supply system 10 and printhead 11 include a number of flow control valves of generall...

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PUM

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Abstract

A continuous ink jet printer comprises a gutter for collecting ink droplets not used in printing. Pumping apparatus draws ink from the gutter and control apparatus is configured to vary the level of pumping by the pumping apparatus depending on the temperature or other parameter of the ink. As the temperature of the ink increases the level of pumping is reduced. The pumping apparatus may comprise two venturi pumps connected in parallel each having its throat connected to the gutter.

Description

technical field [0001] The present invention relates to inkjet printing, and more particularly to ink supply systems for inkjet printers, such as continuous inkjet printers. Background technique [0002] In inkjet printing systems, printing is performed by individual ink droplets that are generated at nozzles and propelled toward a substrate. There are two principal aspects of the system: drop-on-demand, which produces ink drops for printing on demand and when needed; and continuously produces ink drops but only selected some of the ink drops are directed towards the substrate while others are directed towards the substrate. Continuous inkjet printing with recirculation to the ink supply. [0003] Continuous inkjet printers supply pressurized ink to a printhead drop generator where a continuous stream of ink fired from a nozzle is dispersed into individual regular droplets by, for example, an oscillating piezoelectric element. The droplets are directed past charged electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/185
CPCB41J2/185
Inventor 马修·汤姆林赛尔哈迪·奥姆迈克尔·杰弗里·斯坦福罗伯特·史密斯
Owner VIDEOJET TECH INC