Light deflection in case of container printing
A container and light technology, used in printing, typewriters, etc., can solve the problems of insufficient curing distribution of printing ink, power loss, optical power drop, etc., and achieve the effect of optimizing light distribution or irradiation range
Active Publication Date: 2016-11-30
KRONES AG
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Problems solved by technology
Furthermore, this disadvantageously leads to a sharp drop in light power with increasing distance from the LED lamp
As a result, power loss and undesired scattered light occur
Photoreactive printing inks for container printing may not cure sufficiently and e.g. distribute
Furthermore, for example ultraviolet light may fall directly or indirectly, for example, on the print nozzles of the print heads used for printing the containers of inkjet printers, and the print nozzles become clogged due to the curing of the printing ink
Method used
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[0066] figure 1 An apparatus for printing containers with a photoreactive medium is shown by way of example, which can have a printing station 101 and a light source 100 . The printing station can print the containers 104 with a photoreactive printing ink, for example by means of a printing jet 102 . In this case, the light source 100 can, for example, emit light with a defined light distribution 107 , for example a diverging light distribution. Optical elements 106 such as free-form prisms can deflect and / or parallelize the light of the light source 100 at least partially in the direction of the container print 103 and convert the initial light distribution 107 into a new light distribution 108, the irradiation range 109 of which can be adapted to The container print 103 so that the container print 103 can be cured advantageously.
[0067] In order to obtain a uniform curing of the photoreactive container print 103, the container 104 can be rotated, for example with a prese...
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The invention relates to a device for printing containers with a photoreactive medium, comprising at least one printing station (101), at least one printing station for curing photoreactive container prints (103) arranged after the printing station A curing station comprising at least one light source (100) and a conveying device for transporting the container, the curing station having at least one optical element (106) for deflecting the light rays generated by the light source, either at the printing station or at Next to the printing station, the light rays can be deflected and / or parallelized at least partially towards the photoreactive container print of the container printed by the printing station. Furthermore, the invention relates to a method for printing containers with a photoreactive medium, the photoreactive container print being cured by light from a light source which at least partially passes through a processing unit before reaching the photoreactive container print. Optical elements outside the light source to deflect and / or parallelize.
Description
technical field [0001] The invention relates to a device and a method for printing containers or objects with a photoreactive medium using a beam of light, in particular ultraviolet light (UV light), in order to cure the container print produced with the photoreactive medium Background technique [0002] Furthermore, photoreactive media are understood to be printing inks or inks, as they are used, for example, in screen printing or UV inkjet printing, as well as lacquers, such as varnishes, topcoats, non-stick lacquers, scratch-resistant lacquers and / or functional Lacquer or adhesive material for label sticking or component sticking. [0003] In addition, the concept of "printing" should also include the possibility of "painting". [0004] In the following, the concept of ink, printing ink, lacquer, adhesive material or ink is always to be understood as a photoreactive medium for container printing or container varnishing. [0005] For curing the photoreactive medium, UV...
Claims
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IPC IPC(8): B41J3/407
Inventor 哈特姆特·戴维森安德烈亚斯·克劳斯安德烈亚斯·松瑙尔
Owner KRONES AG