The present disclosure provides a blade inspection device, a method and a printing modification device, and belongs to the technical field of screen printing. The blade inspection device includes a telescopic component, a driving component and a parameter obtaining module. The driving component is configured to drive the telescopic component to move in a direction parallel to the line where the blade is located. The parameter obtaining module is configured to obtain a first parameter to inspect the blade according to the first parameter. The first parameter is related to a displacement of the first end of the telescopic component in a direction perpendicular to the line where the blade is located.

A printed object management apparatus (10) is provided with: a line sensor (11); a spectrophotometer (12); an area camera (13); a print quality-inspecting unit (10A) for inspecting the quality of the overall pattern of a printed object (9) on the basis of data input from the line sensor (11); a print density controlling unit (10B) for controlling, on the basis of data input from the spectrophotometer (12), the amount of ink supplied so that the ink density equals the reference density; and an inter-color registering unit (10C) for detecting register marks printed on the printed object (9) on the basis of data input from the area camera (13) and aligning the patterns between the various colors. The apparatus is configured so as to support the line sensor (11), the spectrophotometer (12) and the area camera (13) on a single scanning head (10b).

A device for measuring elevated areas of the surface of a rotary body in the form of a cylinder, a roller, a sleeve or a plate of a printing press, for example a flexographic printing plate, includes a first motor for rotating the rotary body about a rotational axis and a measuring unit for contactless measurement. The measuring unit for contactless measurement includes at least one radiation source and at least one area scan camera. The measuring unit for contactless measurement preferably includes a reference object, for example a wire tensioned in an axially parallel manner, a second motor and optionally a further second motor, for adjusting the measuring unit and/or the reference object perpendicularly to the rotational axis. The device makes it possible to measure elevated areas, for example flexographic print dots, quickly and with high precision. A system having the device is also provided.

A printed circuit board inspection apparatus obtains measurement shape information about each of a plurality of solder pastes printed on a first printed circuit board through a plurality of apertures and aperture shape information about each of the plurality of apertures, obtains probability values that a first solder paste printed through a first aperture of the plurality of apertures and each of a plurality of second solder pastes printed through second apertures other than the first aperture of the plurality of apertures have the measurement shape information when the first solder paste and the plurality of second solder pastes are printed on the first printed circuit board, by applying the measurement shape information and the aperture shape information to a machine-learning based model, and detects whether an anomaly in the first solder paste occurred based on the probability values.

The present disclosure provides a blade inspection device, a method and a printing modification device, and belongs to the technical field of screen printing. The blade inspection device includes a telescopic component, a driving component and a parameter obtaining module. The driving component is configured to drive the telescopic component to move in a direction parallel to the line where the blade is located. The parameter obtaining module is configured to obtain a first parameter to inspect the blade according to the first parameter. The first parameter is related to a displacement of the first end of the telescopic component in a direction perpendicular to the line where the blade is located.

A printed object management apparatus (10) is provided with: a line sensor (11); a spectrophotometer (12); an area camera (13); a print quality-inspecting unit (10A) for inspecting the quality of the overall pattern of a printed object (9) on the basis of data input from the line sensor (11); a print density controlling unit (10B) for controlling, on the basis of data input from the spectrophotometer (12), the amount of ink supplied so that the ink density equals the reference density; and an inter-color registering unit (10C) for detecting register marks printed on the printed object (9) on the basis of data input from the area camera (13) and aligning the patterns between the various colors. The apparatus is configured so as to support the line sensor (11), the spectrophotometer (12) and the area camera (13) on a single scanning head (10b).

A printing system comprising a flexographic printing machine comprising at least one impression cylinder, on which the material in sheet form to be printed is wound and around which at least one printing station is arranged. Each printing station comprises a plate cylinder, which is provided with a graphic element, and an anilox roller. Downstream of each printing station there is at least one drying unit for the inks which emits at least one first air flow and aspirates at least one second air flow; there are also elements for acquiring a coverage value of the graphic element present on the plate cylinder of each printing station and elements for automatically adjusting a flow rate of the first air flow and of the second air flow as a function of the coverage value of the graphic element acquired by the acquisition elements.

The ink in a printing press is controlled during a printing process in which an opaque ink is printed onto a substrate in a first printing unit and a transparent ink is printed onto the opaque ink in a second printing unit. An optical density value of the transparent ink is ascertained by a detection device for the transparent ink printed onto the previously printed opaque ink. A film thickness of the transparent ink is set at the second printing unit by a control unit that detects the optical density value of the transparent ink as a function of the film thickness of the opaque ink, or as a function of an optical density value of the opaque ink, so that the optical density value of the transparent ink corresponds to a target value set at the control unit for the transparent ink, and considering a transparent ink tolerance range.

The invention relates to a method for ink control in a printing press, wherein, during an ongoing printing process, an opaque ink (02) is printed onto a print substrate (01) in a first printing unit (06), and subsequently a transparent printing ink (03) is printed onto the opaque ink (02) in a second printing unit (07), at least one actual value of the optical density of the opaque ink (02) being ascertained by a first detection device (08) for this opaque ink (02) printed onto the print substrate (01), a film thickness of this opaque ink (02) to be applied onto the print substrate (01) being set at the relevant printing unit (06) by a control unit (11) detecting the at least one actual value of the optical density of this opaque ink (02), as a function of a previously ascertained value of the optical density of the surface of the unprinted print substrate (01), in such a way that the at least one actual value of the optical density of this opaque ink (02) detected by the first detection device (08) corresponds to a target value set at this control unit (11) for this opaque ink (02), taking a tolerance range defined in the control unit (11) for this opaque ink (02) into consideration; at least one actual value of the optical density of this printing ink (03) being ascertained by a second detection device (09) for the printing ink (03) printed onto the previously printed opaque ink (02); and a film thickness of this printing ink (03) to be applied onto the opaque ink (02) being set at the printing unit (07) printing this printing ink (03) by the control unit (11) which also detects the at least one actual value of the optical density of this printing ink (03), as a function of the film thickness of the opaque ink (02) previously applied to the print substrate (01) or as a function of the actual value of the optical density of this opaque ink (02), in such a way that the at least one actual value of the optical density of this printing ink (03) detected by the second detection device (09) corresponds to a target value set at the control unit (11) for this printing ink (03), taking a tolerance range defined in the control unit (11) for this printing ink (03) into consideration.

A printed circuit board inspection apparatus obtains measurement shape information about each of a plurality of solder pastes printed on a first printed circuit board through a plurality of apertures and aperture shape information about each of the plurality of apertures, obtains probability values that a first solder paste printed through a first aperture of the plurality of apertures and each of a plurality of second solder pastes printed through second apertures other than the first aperture of the plurality of apertures have the measurement shape information when the first solder paste and the plurality of second solder pastes are printed on the first printed circuit board, by applying the measurement shape information and the aperture shape information to a machine-learning based model, and detects whether an anomaly in the first solder paste occurred based on the probability values.