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Method and apparatus for transferring a printed substance to a substrate by means of a laser beam

A laser, material technology, applied in printing, laser, laser parts and other directions, can solve the problems of high power, uneven transfer of printing materials, etc., to achieve the best interaction effect

Active Publication Date: 2019-04-23
LPKF LASER & ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, said power is too high after the printing process has been triggered, which leads to an uneven transfer of the printed substance

Method used

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  • Method and apparatus for transferring a printed substance to a substrate by means of a laser beam
  • Method and apparatus for transferring a printed substance to a substrate by means of a laser beam
  • Method and apparatus for transferring a printed substance to a substrate by means of a laser beam

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Embodiment Construction

[0035] figure 1 A simple embodiment of a device for carrying out the transfer process according to the invention is shown. The stationary or stationary carrier 1 has a coating with a printing substance 2 . To transfer the printing substance 2 onto the substrate 3 , the optical unit 4 deflects a laser beam 5 from a laser beam source (not shown) onto the carrier 1 with the printing substance 2 . As a result of the thermal energy input, the printing substance is transferred from the carrier 1 to the substrate 3 selectively or spatially resolved, for example in the form of dots or lines. In addition to the deflection of the laser beam 5 , the carrier 1 and / or the substrate 3 can also be implemented in a translational movement in order to expand the available working space in this way.

[0036] figure 2 Another embodiment of the device is shown. The carrier 1 is designed as an endless belt and is guided in particular continuously over four guide rollers 6 . The carrier 1 is c...

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Abstract

The invention relates to a method and a device for transferring printed matter onto a substrate by means of a laser beam. In particular, it relates to a method and a device for transferring a printing substance provided on a carrier to a substrate by means of a laser beam of a laser beam source. For this purpose, the output power (AL) of the laser beam source is modulated over time in such a way that the printing substance is transferred only in the active phase (AP) and not in the inactive phase (PP). At the beginning of the activation phase (AP), the brief dark phase (DP) has the consequence that the total output power AL of the laser beam during the first period is too high and thus that at the beginning of the activation phase (AP) The printed matter has been transferred. During a second period of the activation phase (AP) immediately following the first period, the total output power (AL) remains substantially constant. According to the invention, overshooting of the total output power is regulated via the duration of the dark phase (DP).

Description

technical field [0001] The invention relates to a method and a device for transferring a printing substance provided on a carrier, in particular as a coating, to a substrate by means of a laser beam of a laser beam source with an amplifier, wherein the laser beam and the carrier are moved relative to each other In this case, the output power of the laser beam source is modulated over time in such a way that the printed material is only transferred by means of the laser beam during the active phase of the laser beam source, and not during the inactive phase of the laser beam source. Transfer printing substances. Background technique [0002] Printing methods of the above-mentioned type are used, for example, for digital printing of colors or pastes. In so-called laser transfer printing methods, a laser beam of a laser device is deflected through a transparent carrier of a printing medium, for example paste or ink contained in a housing. The contents of the shell are transfe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/475H01S3/13
CPCB41J2/475H01S3/13B41M5/38207B41M5/38221B41J2/442B41M5/20B41M5/26B41J2/455
Inventor U.布恩廷B.波多布尼克R.佩特科夫塞克R.奥斯特霍尔特
Owner LPKF LASER & ELECTRONICS
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