In some examples, a sheet-fed printing unit is configured as a screen printing unit and includes at least one screen printing forme cylinder and at least one impression cylinder cooperating therewith. A cylinder barrel of the impression cylinder includes a supporting surface for sheets, and which includes at least one impression portion having a constant barrel radius that extends over an angle of at least 170 degrees about the axis of rotation of the impression cylinder. The screen printing forme cylinder has an effective screen radius that is smaller than a barrel radius of the impression cylinder, and the effective screen radius is larger than half the barrel radius.

In some examples, a screen printing unit includes a screen printing forme cylinder, an impression cylinder, and a frame including two frame side walls. The screen printing unit further includes first and second base modules, each comprising two stationary base side walls that each have a one-piece design. Each base module includes four installation areas for rotational transport bodies whose positions coincide in the base modules, and the respective first and second installation areas of each base module form a respective selection group of the base module. An impression cylinder cooperating with the screen printing forme cylinder is in one of the installation areas of the selection group of the first base module, and a respective rotational transport body is arranged in each of the four installation areas of the base modules. A functionally different rotational transport body is arranged in an installation area of the first base module.

In some examples, a screen printing unit includes a screen printing forme cylinder, an impression cylinder, and a frame including two frame side walls. The screen printing unit further includes first and second base modules, each comprising two stationary base side walls that each have a one-piece design. Each base module includes four installation areas for rotational transport bodies whose positions coincide in the base modules, and the respective first and second installation areas of each base module form a respective selection group of the base module. An impression cylinder cooperating with the screen printing forme cylinder is in one of the installation areas of the selection group of the first base module, and a respective rotational transport body is arranged in each of the four installation areas of the base modules. A functionally different rotational transport body is arranged in an installation area of the first base module.

A producing method of a base member provided with a printed layer, the method including: disposing a printing plate including a screen plate having an opening pattern and a frame body supporting the screen plate so that the printing plate is opposed to a printing target surface of the base member having at least one bent portion; disposing a squeegee so as to be opposed to a plate surface of the screen plate opposite to the base member; and forming the printed layer by extruding a printing material onto the printing target surface by the squeegee via the opening pattern of the screen plate in a state where the frame body is supported so as to be relatively movable with respect to the printing target surface in a normal direction of the printing target surface.

A producing method of a base member provided with a printed layer, the method including: disposing a printing plate including a screen plate having an opening pattern and a frame body supporting the screen plate so that the printing plate is opposed to a printing target surface of the base member having at least one bent portion; disposing a squeegee so as to be opposed to a plate surface of the screen plate opposite to the base member; and forming the printed layer by extruding a printing material onto the printing target surface by the squeegee via the opening pattern of the screen plate in a state where the frame body is supported so as to be relatively movable with respect to the printing target surface in a normal direction of the printing target surface.

A printing system for rotary screen printing includes a screen-printing cylinder having flexible surface elements. The flexible surface elements give way upon contact with sheet grippers projecting from an impression cylinder, so that it is not necessary to move the screen-printing cylinder out to avoid contact with the sheet grippers. A screen-printing cylinder, a method for producing a screen-printing cylinder, a printing machine and a method for using a screen-printing cylinder, are also provided.

A printing system for rotary screen printing includes a screen-printing cylinder having flexible surface elements. The flexible surface elements give way upon contact with sheet grippers projecting from an impression cylinder, so that it is not necessary to move the screen-printing cylinder out to avoid contact with the sheet grippers. A screen-printing cylinder, a method for producing a screen-printing cylinder, a printing machine and a method for using a screen-printing cylinder, are also provided.

A printing object surface has a cross-sectional shape curving along a printing advancing direction. The printing advancing direction is defined as a Y-axis, a direction orthogonal to the Y-axis and belonging to the cross-section is defined as a Z-axis, and a direction around an axis orthogonal to a Y-Z plane is defined as a -axis. A squeegee is disposed so as to be movable in the respective Y-, Z- and -axis directions. Information indicating a mutual relationship among respective Y-, Z- and -axis positions is obtained. The relationship is a relationship that enables performing printing while maintaining or substantially maintaining an angle formed by a direction tangent to a printing position in the printing object surface in the Y-Z plane and the squeegee. Printing is executed while the respective Y-, Z-, -axis positions of the squeegee relative to the printing object surface are controlled according to the obtained information.

A printing object surface has a cross-sectional shape curving along a printing advancing direction. The printing advancing direction is defined as a Y-axis, a direction orthogonal to the Y-axis and belonging to the cross-section is defined as a Z-axis, and a direction around an axis orthogonal to a Y-Z plane is defined as a -axis. A squeegee is disposed so as to be movable in the respective Y-, Z- and -axis directions. Information indicating a mutual relationship among respective Y-, Z- and -axis positions is obtained. The relationship is a relationship that enables performing printing while maintaining or substantially maintaining an angle formed by a direction tangent to a printing position in the printing object surface in the Y-Z plane and the squeegee. Printing is executed while the respective Y-, Z-, -axis positions of the squeegee relative to the printing object surface are controlled according to the obtained information.

A vertical double-sided rotary screen transfer printing apparatus includes a vertical rack and one or more pair of rotary screen transfer printing assemblies horizontally disposed opposite to each other. Each rotary screen transfer printing assembly includes a rotary screen plate roller and a transfer roller arranged parallel to each other. The rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier. The transfer roller transfers the pattern onto a fabric passing in a vertical direction between the rotary screen transfer printing assemblies opposite to each other.