Method for manufacturing printed products

A technology for printed matter and printing materials, which is applied in the field of manufacturing printed matter and can solve problems such as gloss differences

Inactive Publication Date: 2017-12-05
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Against this background, the object of the present invention is to propose a method for producing printed matter which is improved compared to the prior art, by means of which both the problem of moiré formation and the problem of gloss differences are solved

Method used

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  • Method for manufacturing printed products

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Embodiment Construction

[0029] figure 1 The method steps A to E or E′ of a preferred embodiment of the method according to the invention are schematically shown in a flow diagram. In addition to the individual method steps, it is likewise shown schematically which device technical measures can be used in each case and how the printed matter can be produced in sequence.

[0030] In method step A, first a printing material 10 with a surface 10 ′ is provided. The printing material 10 can be a sheet or a web. The printing material 10 can be made of paper, cardboard or synthetic material. A coating 11 is applied to the printing substrate 10 , comprising an acid 11 a. The coating 11 can be applied, for example, by means of a roller 13 . As an alternative to method step A, provision can also be made to provide a printing substrate which has already been coated with an acid layer.

[0031] In method step B, the printing material 10 or its surface 10 ′ is printed with a water-based ink 21 in the image re...

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PUM

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Abstract

The invention relates to a method for manufacturing printed products. The method for manufacturing printed products contains the steps of applying at least one colored and water-containing ink (21) to image regions (20) on a printing material (10) in a drop-on-demand process. An essentially colorless and water-containing liquid (31a) is applied a) to non-image regions (30) and/or b) to image regions (20) that have only little ink in the drop-on-demand process. The printing material is dried. The printing material has (A) a coating (11) that contains at least one acid (11). After the application of ink and the application of a liquid, a water-containing further liquid (41), for instance a varnish, is applied (E)both to image regions and to non-image regions of the printing material, and that the liquid and/or the further liquid contains at least one substance (31a) that at least partly neutralizes the acid. The undesired formation of waves and glossiness fluctuations between varnished image regions and varnished non-image regions may thus advantageously be avoided.

Description

technical field [0001] The invention relates to a method for producing printed matter having the features stated in the preamble of claim 1 . [0002] The technical field to which the present invention pertains is that of the graphics industry and especially of ink printing (inkjet) in the graphics industry. In the known DOD (Drop-on-Demand, drop-on-demand) inkjet printing method, a printed image is generated on a printing material in that, depending on the image to be printed, the print head generates the finest ink droplets and the These ink droplets are transferred to the printing material without contact. The printing substrate can be made of paper, cardboard or synthetic material and can be in sheet or web form. Background technique [0003] DE 10 2010 060 409 A1 discloses a method for reducing waviness of a printing material in a printing press and a corresponding device for printing a printing material. In this case, at least one printing area of ​​the printing mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/50B41M7/02
CPCB41M5/50B41M7/02B41M5/52B41M5/5218B41M5/5227B41M7/00B41M7/0018
Inventor T·保罗P·哈赫曼
Owner HEIDELBERGER DRUCKMASCHINEN AG
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