A substrate is printed with front side and back side markings in a first color ink. The front side when viewed with reflected light includes a first marking printed in a first saturation and a first symbol printed in the first saturation. The back side when viewed with reflected light includes: a second marking printed in a second saturation; a second symbol printed in the second saturation; a third marking printed in the first saturation; and a third symbol printed in the first saturation. The first marking, the second marking, and the third marking are printed to provide an interlocking pattern of low saturation color and high saturation color when viewed with transmitted light. The second symbol is visible, and the first symbol and the third symbol are visible and indistinguishable, when viewed with transmitted light.

This invention relates to an apparatus and a process for transferring images, barcodes, optical patterns, latent images, Fresnel lenses, holograms, sterling lenses etc from a stamping foil (116) at desired locations on to a substrate (110) such as paper, polymeric film, flexible laminates, woven or non-woven substrate and combination of these in roll to roll form and more particularly to an apparatus and a process for registered transfer of images, barcodes, optical patterns, latent images, Fresnel lenses, holograms, sterling lenses etc from a stamping foil (116) to a substrate (110) in accurate registered relation. The use of high resolution and high speed sensors (135, 160, 162, 164, 166, 168) provides continuous precise data to the regulating device which results in the continuous correction in the corresponding position of stamping punch/es (137) and stamping foil (116) to match the locations on substrate (110). This provides accurate registered transfer of prints, latent images or Fresnel lenses on the substrate (110) with efficient utilization of stamping foil (116).

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.

A printed circuit board inspection apparatus generates at least one image indicating whether an anomaly associated with a plurality of solder pastes printed on a first printed circuit board is detected, if an anomaly in at least one solder paste of the plurality of solder pastes is detected by using an image of the first printed circuit board, obtains at least one value indicating relevance between at least one fault type and the generated at least one image, using the machine-learning based model, and determines a fault type associated with the at least one solder paste in which the anomaly is detected from at least one fault type, based on the obtained at least one value.

A backing member (50a) is pressed in a perpendicular direction (D3) by a predetermined sheet conveyed to a colorimetric position (P), and is disposed behind the predetermined sheet at the colorimetric position (P) when viewed from a colorimetric unit (40). A supporter (90) supports the backing member (50a) in a manner that the backing member (50a) can move in the perpendicular direction (D3). Holders (23a, 23b, 23c) hold a color tile member (80a) disposed on the backing member (50a) in a state that the amount of movement of the backing member (50a) in the perpendicular direction (D3) by the color tile member (80a) being thicker than the predetermined sheet and disposed on the backing member (50a) is larger than the amount of movement of the backing member (50a) in the perpendicular direction (D3) by the predetermined sheet.

An inspection system has a plurality of detection regions. The plurality of these detection regions of the inspection system are arranged to jointly inspect a printed sheet which has a plurality of printed regions. A first detection region is arranged to inspect a first printed region of the printed sheet and a second detection region is arranged to inspect a second printed region of the same printed sheet. A first measurement technology sensitivity is set for the first detection region and a second measurement technology sensitivity is set for the second detection region in the inspection system. The first measurement technology sensitivity and the second measurement technology sensitivity are set to be different from one another. The first measurement technology sensitivity and the second measurement technology sensitivity are set in each case either manually, by the use of an operating element, or automatically by the use of a program.

An inspection apparatus includes a reading device and a processor. The reading device is configured to read printed matter with an image that is printed on a printing medium based on a source image to generate a read image. The processor is configured to generate a reference image based on the source image, determine whether an inspection is to be executed based on a size of the source image and a size of the printing medium, and compare the reference image with the read image to inspect quality of the printed matter in response to a determination that the inspection is to be executed.

A colorimetric value detection system detects a colorimetric value at a colorimetric position of a printed material using a colorimeter, and the colorimetric value detection system includes: a hardware processor that: calculates an output color of an object at the colorimetric position on the basis of target profile information of a printing device and object information of the printed material; and compares the colorimetric value of the colorimeter with the output color calculated by the hardware processor, wherein the colorimetric value of an object or at a position desired by a user is specified from a degree of coincidence of phase profiles of the colorimetric value.

A method for checking the maintenance of register of printing images to be printed on two opposite sides of a printing material, in which the first side of the printing material is printed in a rotary printing press by a first printing unit cylinder, and in which the second side of the printing material, which lies opposite to first cite, is printed in the printing press by a second printing unit cylinder which interacts with the first printing unit cylinder. A printed image is printed by the first printing unit cylinder under the second printing unit cylinder. Afterwards, the printing material is printed in contact with the two interacting printing unit cylinders with the printing image, which is printed under the second printing unit cylinder, being printed onto the same side of the printing material together with an identical or a different printing image which is to be printed by the second printing unit cylinder during continuous printing of the rotary printing press. The printed images, which are printed together onto the same side of the printing material, are subsequently checked, with regard to their maintenance of register.

In an example of the disclosure, first and second print jobs are received at a printer. The first and second print jobs each include production frames. The first and second print jobs are printed with a media roll change occurring during printing. A first finishing device information nonproduction (FDIN) frame and a second FDIN frame are printed. The first and second FDIN frames include coded information regarding the first print job and the second print job, respectively. The coded information is for reading by a scanner at a finishing device. A press calibration nonproduction (PCN) frame that includes a printer calibration diagnostic is printed. A scanner at the printer is caused to capture the printer calibration diagnostic. A calibration operation is performed at the printer utilizing data or attributes captured from the printer calibration diagnostic.