A light detection sensor includes a light source that irradiates a detection target with light, a rod lens that collects emitted light from the detection target, a first light receiving element that detects the emitted light that has passed through the rod lens, and a second light receiving element that detects the emitted light that has passed through the rod lens, at a position different from a position at which the first light receiving element detects the light.

In some examples, a sheet processing machine includes at least one transport means of an infeed system, and the infeed system includes at least one cam mechanism including, in each case, at least one cam disk having an axis of rotation. At least one scanning element is arranged in each case to rest against the at least one cam disk. The at least one scanning element is connected to the at least one transport means via at least one drive lever. The at least one drive lever in each case has at least one mounting point. The mounting point and the axis of rotation may be adjusted relative to one another, and a position displacement of the mounting point relative to the axis of rotation may compensate for at least one position error of the at least one sheet.

A pawl-less retractable comprises an inner frame with a drum-sperrad assembly mounted to the inner frame between side members of the frame to rotate relative to the frame and a stop cap which, during a fall, engages said drum-sperrad assembly to prevent further rotation of said drum. The inner frame can be pivotally mounted to the stop cap such that the inner frame and the drum-sperrad assembly pivot relative to the step cap, or the stop cap can pivot relative to the drum-sperrad assembly. The stop cap comprises a central body, a leading wing extending from a first side of the central body and a trailing wing extending from a second side of the central body opposite said first side. In use, the drum-sperrad assembly and the stop cap pivot relative to each other between an unlocked position in which the teeth of the sperrad are inside of an engagement zone circle and a locked position in which the teeth are outside of the engagement zone circle.

An example method comprises operating a drive unit to advance a substrate in a substrate advance direction toward a printing station. At the printing station, a first line is printed onto the substrate. A drive unit is instructed to advance the substrate in the substrate advance direction by a target amount, and a second line is printed onto the substrate. The distance between the first and second lines in a direction perpendicular to the substrate advance direction is calculated and, based on the calculated difference, a tension of the substrate is modified.

In some examples, a sheet processing machine includes at least one sensor device that includes at least two sensors configured as a camera. The sheet processing machine further includes at least one infeed system. The at least one sensor device is configured to control, by open-loop control and/or closed-loop control, at least one servo drive of the infeed system as a function of at least one sheet of sheets being detected by the at least two sensors. The at least two sensors are configured to selectively detect at least one edge and/or printing mark of the sheets. Some examples likewise relate to a method for controlling, by open-loop control and/or closed-loop control, at least one component of a sheet processing machine.

The present invention relates to an automatic image positioning system for a sheet material. The automatic positioning system is used to convey the sheet material from a feeding place to a paper gripper bar. The automatic positioning system includes a first conveying device and a second conveying device, the automatic positioning system further includes a photoelectric detection device used to perform positioning and positioning correction on the sheet material, and the photoelectric detection device is provided at a starting end of the second conveying device (3). Compared with the prior art, the present invention utilizes an photoelectric detection device to perform positioning and positioning correction on a material, uses a vacuum adsorption component to stabilize the material, and has advantages of high systemic positioning accuracy, high positioning correction accuracy, and strong material adaptability.

The present disclosure relates generally to signal encoding for containers such as shipping boxes, food containers, wrapped items such as pallets. One aspect of the technology relates to an image processing method for determining spatial dimensions of an encoded surface. The method comprises: obtaining an image depicting the encoded surface, in which the encoded surface comprises one or more raw data signal tiles printed thereon, with each tile comprising a side length N in inches or centimeters; detecting each of the one or more raw data signal tiles from the obtained image; determining a total number of tiles in a vertical direction, and determining a total number of tiles in a horizontal direction; determining a height and length of the encoded surface by multiplying each of the total number of tiles in a vertical direction and the total number of tiles in a horizontal direction by the side length N. Other aspects are described as well.

An example method comprises operating a drive unit to advance a substrate in a substrate advance direction toward a printing station. At the printing station, a first line is printed onto the substrate. A drive unit is instructed to advance the substrate in the substrate advance direction by a target amount, and a second line is printed onto the substrate. The distance between the first and second lines in a direction perpendicular to the substrate advance direction is calculated and, based on the calculated difference, a tension of the substrate is modified.

An information processing apparatus includes a sheet holder, a conveyor, a wireless writer, a wireless reader, and a controller. The sheet holder accommodates a sheet. The conveyor conveys the sheet from the sheet holder. The wireless writer writes data to a wireless tag on a first sheet. The wireless reader reads data from the wireless tag on the first sheet. The controller ejects a second sheet from the sheet holder when the data written in the first sheet by the writer and the data read from the first sheet by the reader are different from each other.

According to one embodiment, a paper sheet processing apparatus includes a conveyance device with a conveyor belt, and an inspection device configured to inspect a paper sheet conveyed by the conveyor belt. The inspection device includes an image detection device configured to capture an image of the paper sheet and the conveyor belt and obtain an image of the paper sheet and the conveyor belt, an image processing device configured to detect a degradation level of the conveyor belt based on an belt image of the conveyor belt, and a controller configured to transmit information encouraging replacement of the conveyor belt to a monitor.