In an embodiment of the present invention, a squeegee blade holder is provided. The holder includes a first side member, a second side member, and a pivot portion between the first and second side members. The holder also includes a separator between the first and second side members for maintaining compression of the side members against the squeegee blade.

Disclosed herein are apparatuses for screen printing on a surface of a three-dimensional substrate comprising a substantially rigid, substantially planar frame having a perimeter defining a region within the perimeter having a given surface area; and a screen attached to the frame and extending across at least a portion of the surface area, wherein the screen comprises a first portion through which a liquid printing medium can pass onto a proximate three-dimensional substrate; and a second portion coated with an emulsion substantially preventing the liquid printing medium from passing through the second portion of the screen, wherein the screen has a fixed tension of less than about 20 N/cm. Methods and systems for screen printing on a surface of a three-dimensional substrate are also disclosed herein.

Disclosed herein are apparatuses for screen printing on a surface of a three-dimensional substrate comprising a substantially rigid, substantially planar frame having a perimeter defining a region within the perimeter having a given surface area; and a screen attached to the frame and extending across at least a portion of the surface area, wherein the screen comprises a first portion through which a liquid printing medium can pass onto a proximate three-dimensional substrate; and a second portion coated with an emulsion substantially preventing the liquid printing medium from passing through the second portion of the screen, wherein the screen has a fixed tension of less than about 20 N/cm. Methods and systems for screen printing on a surface of a three-dimensional substrate are also disclosed herein.

A printing machine for printing on planar substrates, in particular circuit boards. The printing machine includes a printing table which extends in a horizontal plane and on which at least one substrate to be printed on can be arranged and at least one printing device assigned to the printing table. The printing device has a screen holder for an interchangeable printing screen and a doctor device assigned to the screen holder, wherein, by means of the doctor device, a printing material can be applied onto the substrate to be printed on through the printing screen. A screen magazine is assigned to the doctor device for storing at least one printing screen for the doctor device.

A printing machine for printing on planar substrates, in particular circuit boards. The printing machine includes a printing table which extends in a horizontal plane and on which at least one substrate to be printed on can be arranged and at least one printing device assigned to the printing table. The printing device has a screen holder for an interchangeable printing screen and a doctor device assigned to the screen holder, wherein, by means of the doctor device, a printing material can be applied onto the substrate to be printed on through the printing screen. A screen magazine is assigned to the doctor device for storing at least one printing screen for the doctor device.

The present disclosure provides a screen printing device, including a printing screen having a printing mesh and a mesh frame, and a squeegee blade, wherein the printing mesh has first and second longitudinal ends, first and second blank areas, and a printing portion with printed patterns between the first and second blank areas, which being movably connected to the mesh frame by a tension adjusting mechanism respectively and being provided with at least one tension sensor respectively approximate to the printing portion, wherein the device further has a control means for receiving a tension measurement value from the tension sensor and compare it with a reference value so as to control the tension adjustment mechanism to adjust the tension in the printing mesh. The disclosure further provides a method for adjusting the tension of the printing mesh of the screen printing device.

The present disclosure provides a screen printing device, including a printing screen having a printing mesh and a mesh frame, and a squeegee blade, wherein the printing mesh has first and second longitudinal ends, first and second blank areas, and a printing portion with printed patterns between the first and second blank areas, which being movably connected to the mesh frame by a tension adjusting mechanism respectively and being provided with at least one tension sensor respectively approximate to the printing portion, wherein the device further has a control means for receiving a tension measurement value from the tension sensor and compare it with a reference value so as to control the tension adjustment mechanism to adjust the tension in the printing mesh. The disclosure further provides a method for adjusting the tension of the printing mesh of the screen printing device.

In an embodiment of the present invention, a squeegee blade holder has a first side member, a second side member, and a pivot portion between the first and second side members. The holder also includes a separator between the first and second side members for maintaining compression of the side members against the squeegee blade.

In an embodiment of the present invention, a squeegee blade holder has a first side member, a second side member, and a pivot portion between the first and second side members. The holder also includes a separator between the first and second side members for maintaining compression of the side members against the squeegee blade.

Screen printer 10 is for screen printing solder paste 13 loaded on an upper surface of stencil 12 onto board S using one of first and second squeegees 71 and 72. Screen printer 10 is provided with a stencil frame holding rail that holds stencil frame 12a of stencil 12, pair of board holding members 36 and 38 that hold board S, raising and lowering table 16 that raises and lowers board holding members 36 and 38, and pair of stencil supporting members 50 and 52 that support stencil 12 from below at a portion outside a printing region of stencil 12 used for screen printing. Stencil supporting members 50 and 52 are provided independently from raising and lowering table 16. Therefore, the load applied to raising and lowering table 16 is reduced. Also, there is increased design freedom with respect to members and the like loaded on raising and lowering table 16.