For determining optimized parameter values of a mask-printing process, a quality value for the substrate is determined in a testing process following the printing operation, and an image of the upper side of the template is generated. A relationship between the parameter, the quality value and the template image are ascertained, and the relationship is used to determine an optimized value for the parameter. In the printing operation, the optimized value is set, and the printing process is monitored by using the respective template image, dispensing with the need for the testing process.

A screen printing device includes a substrate support unit, a squeegee member above the substrate support unit, a screen mask unit disposed between the substrate support unit and the squeegee member, the screen mask unit defining a printing opening for forming a printed pattern, and at least one tension adjusting member disposed on a first surface of the screen mask unit facing the substrate support unit and adjacent to the printing opening.

The present invention discloses a four-position full-cell solar silicon wafer printer, including a base, an infeed guide rail, a detection camera assembly, a turntable assembly, a lifting module, a UVW correction alignment mechanism, and an outfeed guide rail. The UVW mechanism comprises two Y-axis modules, one X-axis module, a printing platform, a steel mesh frame, and a printing squeegee kit. The Y/X-axis modules are under the platform, their drive ends connected to the steel mesh frame. The squeegee kit moves left-right on the platform. It uses the Y/X-axis modules and detection camera to realize X, Y, three-axis motion, ensuring steel mesh-silicon wafer alignment and optimizing printing directions.

The present invention discloses a silicon wafer printer for double half-cell printing, comprising a work platform, a turntable assembly, a front-end conveyor, a left calibration module, and a right calibration module. A calibration vision camera is mounted above the front-end conveyor's end. The left linear module connects to a left motor module and then a left suction module. The right linear module connects to a right motor module, two calibration cylinders, calibration bearings, and a right suction module. It uses visual positioning to determine double half-cells' position/angle, adjusts the right half-cell with the left as reference, shortens alignment time, adopts single-head front-to-back printing and a smaller indexing disc, boosting turntable printing efficiency.

A screen printing device includes a stage on which a display panel is disposed, a mask assembly disposed on the display panel, a coating member for applying a polymer paste onto the mask assembly, a pressing member for bringing the mask assembly into contact with the display panel, and a blocking member disposed at an edge of the mask assembly.

A printing stencil (1) for forming conductor tracks on a substrate. The printing stencil (1) has a plurality of cutouts in the form of printing gaps (4) for forming the conductor tracks. Each printing gap (4) of the plurality of printing gaps (4) has at least one print definition region (3) adjacent to the printing side and at least one printing medium supply region (2) adjacent to the squeegee side, the volume of the print definition region (3) being smaller than the volume of the printing medium supply region. Moreover, a printing device for forming conductor tracks on a substrate and a method for producing a metallic contact structure of a photovoltaic solar cell are also provided.

The present disclosure provides a stencil printer for printing a viscous substance onto a substrate. The stencil printer comprises a frame, a stencil, a support table, a squeegee blade mount, a squeegee blade and a squeegee blade holder. The stencil is connected to the frame. The support table is connected to the frame and configured to support the substrate in a printing position. The support table is provided below the stencil. The squeegee blade mount is connected to the frame and provided above the stencil. The squeegee blade extends in an X direction and performing a squeegeeing operation in a Y direction perpendicular to the X direction. The squeegee blade holder comprises a fixed holder and a movable holder. The fixed holder is fixedly mounted to the squeegee blade mount, and the squeegee blade is held on the movable holder. The movable holder is configured to be movably connected to the fixed holder in the X direction to enable the squeegee blade to move relative to the support table in the X direction, so that the squeegee blade is adjustable in the X direction to a position aligned with the support table and the stencil.