A printing apparatus of the present disclosure is for performing printing of a viscous fluid onto a print target using a screen mask, the printing apparatus including: a moving section configured to perform at least one of moving an exchangeable member to an exchange position or loading and unloading of the exchangeable member, for at least two types of the exchangeable member that, out of a cartridge configured to house the viscous fluid, a squeegee, a screen mask, a cleaning member used to clean the screen mask, and a support member configured to fix the print target, include at least one out of the cartridge, the squeegee, and the cleaning member; and an exchange control section configured to control the moving section to perform exchange processing of exchanging the exchangeable member.

In some examples, a screen printing unit includes a screen printing forme cylinder, an impression cylinder, and at least one further rotational transport body. A fixing element of the impression cylinder includes inner and outer contact surfaces for clamping sheets. The inner contact surface has a base radius as a distance from an axis of rotation of the impression cylinder. A cylinder barrel of the impression cylinder has a supporting surface for sheets that includes an impression portion having a constant barrel radius, which extends over at least 170 about the axis of rotation of the impression cylinder and the barrel radius is larger than the base radius. A fixing element of the further rotational transport body includes an inner and an outer contact surface for clamping sheets. The inner contact surface includes the base radius as a distance from an axis of rotation of the further rotational transport body.

A solder recovery device includes a recovery plate, a lifting and lowering device, and multiple connecting sections. The recovery plate recovers solder. The lifting and lowering device lifts up and lowers the recovery plate. The multiple connecting sections include a fixing portion provided on the recovery plate and configured to detachably attach the recovery plate to the lifting and lowering device and a fixed portion provided on the lifting and lowering device and to which the fixing portion is fixed, and are configured to restrain the recovery plate from moving in a predetermined direction relative to the lifting and lowering device when the fixing portion is fixed to the fixed portion. The multiple connecting sections have different restraining directions in which the recovery plate is restrained from moving relative to the lifting and lowering device.

A solder recovery device includes a recovery plate, a lifting and lowering device, and multiple connecting sections. The recovery plate recovers solder. The lifting and lowering device lifts up and lowers the recovery plate. The multiple connecting sections include a fixing portion provided on the recovery plate and configured to detachably attach the recovery plate to the lifting and lowering device and a fixed portion provided on the lifting and lowering device and to which the fixing portion is fixed, and are configured to restrain the recovery plate from moving in a predetermined direction relative to the lifting and lowering device when the fixing portion is fixed to the fixed portion. The multiple connecting sections have different restraining directions in which the recovery plate is restrained from moving relative to the lifting and lowering device.

This invention relates to compositions and methods for making three-dimensional (3D) images by additive manufacturing or 3D printing. Specifically, it describes techniques that allow images consisting of sand, metal or ceramic particles to be formed by the polymerisation of a photopolymer mixed with the particles.

A squeegee device for a printing press, which prints a printing material, at at least one printing point, in accordance with a screen printing process, comprises a screen printing screen, a squeegee which is one of set against the screen printing screen in a thrown-on position and can be set against the screen printing screen In a thrown-on position, a bearing device which makes a throwing-on and throwing-off movement possible between the thrown-on position of the squeegee and a thrown-off position, and a drive device, by the use of which, the squeegee can be set against the screen printing screen and can be set away from the latter during operation in a manner which is correlated to a press or printing material phase position. The drive device is set up to one of bring about and to make possible throwing-on and throwing-off of the squeegee in sequences which differ from one another in one of different positions and the phase lengths in relation to the length of the screen printing screen.

A squeegee device for a printing press, which prints a printing material, at at least one printing point, in accordance with a screen printing process, comprises a screen printing screen, a squeegee which is one of set against the screen printing screen in a thrown-on position and can be set against the screen printing screen In a thrown-on position, a bearing device which makes a throwing-on and throwing-off movement possible between the thrown-on position of the squeegee and a thrown-off position, and a drive device, by the use of which, the squeegee can be set against the screen printing screen and can be set away from the latter during operation in a manner which is correlated to a press or printing material phase position. The drive device is set up to one of bring about and to make possible throwing-on and throwing-off of the squeegee in sequences which differ from one another in one of different positions and the phase lengths in relation to the length of the screen printing screen.

A printing apparatus including: a cleaning section including a cleaning member and configured to perform cleaning processing of a screen mask used in printing of a viscous fluid onto a print target; a cleaning member moving section configured to perform at least one of moving the cleaning member to and from a cleaning position and an exchange position, and unloading and loading of the cleaning member; and an exchange control section configured to control the cleaning member moving section to perform cleaning member exchange processing of exchanging the cleaning member.

A printing apparatus including: a cleaning section including a cleaning member and configured to perform cleaning processing of a screen mask used in printing of a viscous fluid onto a print target; a cleaning member moving section configured to perform at least one of moving the cleaning member to and from a cleaning position and an exchange position, and unloading and loading of the cleaning member; and an exchange control section configured to control the cleaning member moving section to perform cleaning member exchange processing of exchanging the cleaning member.

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.