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Method for operating an inkjet printer

A technology of inkjet printing machine and printing head, applied in printing, copying/marking methods, printing devices, etc., can solve the problems of inapplicable elimination of precipitation or coagulation, and achieve the effect of avoiding rising and reliable costs

Inactive Publication Date: 2020-05-26
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the disclosed device is not suitable for eliminating the problem of sedimentation or agglomeration

Method used

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  • Method for operating an inkjet printer
  • Method for operating an inkjet printer
  • Method for operating an inkjet printer

Examples

Experimental program
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Embodiment Construction

[0045] figure 1 A flow chart showing a series of method steps of a preferred embodiment of the method according to the invention. The method steps are described below (refer also to the reference numerals image 3 ):

[0046] Step 1 (optional): the ink supply 17 of the inkjet printer 18 or the ink cartridge 20 and / or the ink storage container of said inkjet printer and optionally the ink lines 22a, 22b of said inkjet printer, 25 and 31a are emptied of liquid ink 21 , 24 .

[0047] Step 2: Providing liquid ink 24, ie injecting ink into the storage container 23 (or providing an already filled storage container).

[0048] Step 3: The ink 24 is brought, filled, preferably pumped from the storage container 23 into the ink cartridge 20 and present there as ink 21 . Optionally, the ink 21 is guided using an agitator 27 . Ink is brought, preferably pumped, to at least one inkjet printhead 22 via ink line 22a and brought, preferably pumped, back to ink cartridge 20 via ink line 22...

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PUM

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Abstract

A method according to the invention for operating an inkjet printing machine, wherein the determination of the state of the ink is characterized in that the sedimentation and / or agglomeration of the pigmented ink (21, 24) is determined by refractometry, i.e. The value of the refractive index of the ink is measured (4, 12) by means of a refractometer (31, 32) and a computer-aided comparison (5, 13) is made with stored values ​​(6, 14).

Description

technical field [0001] The invention relates to a method for operating an inkjet printing press. [0002] The invention lies in the technical field of the graphics industry and here in particular in the field of industrial inkjet printing (Inkjet) on three-dimensional objects or on flat substrates, i.e. in the field of applying liquid ink to a free surface, preferably made of plastic or metal. In the area of ​​form surfaces or sheet-like or web-like printing materials, preferably made of paper, cardboard or plastic. Background technique [0003] The liquid ink is applied with the known DOD inkjet printing method (drop-on-demand, drop-on-demand) by producing a printed image on the surface, wherein inkjet printing with individually controllable nozzle openings The head (short: printing head) generates the smallest ink droplets, preferably in the picoliter range, corresponding to the image to be printed, and transfers them as printing dots onto the surface without contact. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J29/393
CPCB41J29/393G01N33/32G01N21/41B41J2/1707B41J2/195B41J29/46B41M5/0023B41M5/0088
Inventor M·施勒霍尔茨
Owner HEIDELBERGER DRUCKMASCHINEN AG
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