Screen printing apparatus and component mounting line

Abstract

A screen printing apparatus includes a mask and a printing head. The mask has a first opening provided in a first region, and a second opening provided in a second region which is thicker than the first region. The printing head fills the first opening with a paste in a state where a substrate is in contact with the first region, and fills the second opening with the paste in a state where the substrate is in contact with the second region.

What is claimed is: 
     
         1 . A screen printing apparatus, comprising:
 a mask which has a first opening provided in a first region, and a second opening provided in a second region which is thicker than the first region; and   a printing head which fills the first opening with a paste in a state where a substrate is in contact with the first region, and fills the second opening with the paste in a state where the substrate is in contact with the second region.   
     
     
         2 . The screen printing apparatus according to  claim 1 ,
 wherein the printing head fills the second opening with the paste in a state where the substrate is in contact with the second region after filling the first opening with the paste in a state where the substrate is in contact with the first region.   
     
     
         3 . The screen printing apparatus according to  claim 1 ,
 wherein the printing head comprises a squeegee which slidably moves on the mask and fills the first opening and the second opening with the paste, and wherein the squeegee slidably moves in the first region to fill the first opening with the paste, stops in an intermediate region provided between the first region and the second region on the mask, and then start to move from the intermediate region and slidably moves in the second region to fill the second opening with the paste.   
     
     
         4 . The screen printing apparatus according to  claim 1 ,
 wherein a lower surface of the first region is flush with a lower surface of the second region.   
     
     
         5 . The screen printing apparatus according to  claim 3 ,
 wherein a lower surface of the first region is flush with a lower surface of the second region, and   wherein the intermediate region comprises an inclination surface which connects an upper surface of the first region and an upper surface of the second region to each other.   
     
     
         6 . The screen printing apparatus according to  claim 1 ,
 wherein an upper surface of the first region is flush with an upper surface of the second region.   
     
     
         7 . A component mounting line, comprising:
 the screen printing apparatus according to  claim 1 ; and   a component mounting apparatus which mounts a component onto a substrate on which the paste is printed by the screen printing apparatus.