Printing method on cardboard in an inkjet printing device
An inkjet printing method on a rectangular cardboard having a width between a first side and a second side, parallel to each other, comprising: —applying a first strap ( 400 ) and a second strap ( 400 ), parallel to each other and with a space between each other, on a vacuum belt ( 500 ) which has a rough support area having a surface roughness (Ra) from 8.0 μm to 3500.0 μm—applying the cardboard ( 300 ) on the vacuum belt ( 500 ) wherein said cardboard ( 300 ) overlaps partially the applied first strap ( 400 ) at the first side of said cardboard ( 300 ) and overlaps partially the applied second strap ( 400 ) at the second side of said cardboard ( 300 ) and wherein between said first side and second side the cardboard is in contact with the vacuum belt ( 500 ); —applying vacuum power at said rough support area for attaching said strap ( 400 ) and said cardboard ( 300 ); —transporting said attached straps ( 400 ) and attached cardboard ( 300 ) during inkjet printing an image on said attached cardboard ( 300 ).
1 . An inkjet printing method on a rectangular cardboard having a width between a first side and a second side, parallel to each other, and wherein the cardboard is transported in a transport direction by a vacuum belt comprising:
applying a first strap and a second strap, parallel to each other and the transport direction and with a space between each other, on the vacuum belt which has a rough support area having a surface roughness (R a ) from 8 μm to 3500 μm;
applying the cardboard on the vacuum belt wherein said cardboard overlaps partially the applied first strap at the first side of said cardboard and overlaps partially the applied second strap at the second side of said cardboard and wherein between said first side and second side the cardboard is in contact with the vacuum belt;
applying vacuum power at said rough support area for attaching said strap and said cardboard; and
transporting said attached first and second strap and attached cardboard during inkjet printing an image on said attached cardboard.
2 . The inkjet printing method of claim 1 , wherein the first strap and the second strap are wrapped around the rough vacuum belt.
3 . The inkjet printing method of claim 2 , wherein the first strap and/or second strap has an adhesive layer for better fixing the cardboard.
4 . The inkjet printing method of claim 3 , wherein the rough vacuum belt is a mesh belt.
5 . The inkjet printing method of claim 2 , wherein the rough vacuum belt is wrapped around another vacuum belt which transports said rough vacuum belt in the transport direction.
6 . The inkjet printing method of claim 2 , wherein the support area comprises a plurality of cups and wherein minimum one air-suction element at the opposite side of the support area is connected with one or more cups of said plurality of cups.
7 . The inkjet printing method of claim 2 , wherein the rough vacuum belt is a mesh belt.
8 . The inkjet printing method of claim 2 , wherein the width of the strap is between 10 mm and 200 mm.
9 . An inkjet printing method of claim 8 , wherein the thickness of the strap is between 0.03 mm to 3.50 mm.
10 . The inkjet printing method of claim 1 , wherein the support area comprises a plurality of cups and wherein minimum one air-suction element at the opposite side of the support area is connected with one or more cups of said plurality of cups.
11 . The inkjet printing method of claim 1 , wherein the rough vacuum belt is a mesh belt.
12 . The inkjet printing method of claim 11 , wherein the support area of the mesh belt comprises an adhesive layer for holding down the cardboard.
13 . The inkjet printing method of claim 11 , wherein the open mesh is woven by fibres comprising PTFE, textile or glass.
14 . The inkjet printing method of claim 1 , wherein the width of the strap is between 10 mm and 200 mm.
15 . An inkjet printing method of claim 14 , wherein the thickness of the strap is between 0.03 mm to 3.50 mm.