Method for inkjet printing on at least one curved area of ​​a surface of an object

A technology of regions and objects, applied in the field of equipment implementing the method according to the present invention, can solve problems such as changes in hue values

Inactive Publication Date: 2020-02-14
HEIDELBERGER DRUCKMASCHINEN AG
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this document does not address the question of how undesired tonal value changes can be prevented or which technical measures must be provided

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for inkjet printing on at least one curved area of ​​a surface of an object
  • Method for inkjet printing on at least one curved area of ​​a surface of an object
  • Method for inkjet printing on at least one curved area of ​​a surface of an object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 The apparatus shown in includes: a robot 13 with a robot arm 14; and a printing head 8 mounted on the robot arm; and a computer 7 for controlling the movement of the robot and controlling the ink ejection of the printing head. The robot is preferably a multi-axis robot (for example a rotating-arm robot) and in particular a so-called industrial robot. The print head is an inkjet print head having a nozzle face 10 with at least one row of nozzles 9 . These nozzles can be individually controlled and eject ink droplets during the movement of the print head according to the print image to be printed.

[0026] The robot 13 guides the printing head along the object 1 . The object 1 has a curved surface 2 which should be provided with a printed image 3 inside the area 2'. Since this area is wider than the printing width of the printing head 8 , the printing head moves along the object on several tracks 11 along the direction of movement 15 and at printing dista...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for inkjet printing a printed image of at least one curved region of the surface of an object: a) preparing data describing said printed image; b) preparing or calculating data describing said area; c) preparing or calculating trajectory data for the trajectory on which the printing head or the object moves; d) using the data from method steps b) and c), calculating the e) calculating the following data: this data is based on tiling said area under the situation of applying the data from method step d); f) after applying the data from method step e); In this case, the tonal value is calibrated; g) in the case of applying the data from method step f), the screened printed image is screened, and h) the screened printed image is printed on the area.

Description

technical field [0001] The invention relates to a method for inkjet printing on at least one curved region of the surface of an object. Furthermore, the invention relates to a device for carrying out the method according to the invention. [0002] The present invention is in the technical field of printing spatially extending objects (or objects). The surface may be curved and printed by inkjet printing methods. For this, the inkjet print head is guided along the surface to be printed by a robotic arm at a printing distance. Background technique [0003] Several patent applications and patents are known from the prior art. The present invention is described in the technical field described above. The patent applicants themselves have filed patent applications based on this technical field: eg DE 10 2012 006 371 A1, DE 10 2014 011 301 A1 and DE 10 2015 205 631 A1. In the above-mentioned three patent applications, devices and methods are specified which allow any 3D objec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): B41J3/407
CPCB41J3/4073B25J9/1679B25J11/0075B41M5/0088G06K15/021G06K15/1825B41J2/04536B41J2/04586B41M5/0082
InventorA·普鲁雷希特M·芬内尔T·米勒
OwnerHEIDELBERGER DRUCKMASCHINEN AG