A displacement amount calculation part in a base material processing apparatus calculates the degree of matching between an upstream data section and a downstream data section included in a first and a second detection results, which indicate time-varying changes in the positions of an edge of a base material in the width direction at an upstream and a downstream detection positions. This calculation uses calculation results obtained by sequentially calculating the degrees of matching between sub-data sections in the upstream data section and downstream sub-data sections in the downstream data section. This reduces the amount of computation and enables highly accurate detection of the amount of displacement of the base material in the transport direction on the basis of an identification result of the downstream data section that is highly matched with the upstream data section.

A displacement amount calculation part in a base material processing apparatus calculates the degree of matching between an upstream data section and a downstream data section included in an upstream and a downstream detection results, which indicate time-varying changes in the positions of an edge of the base material in the width direction at an upstream and a downstream detection positions. This calculation uses the results of comparison between signals in a predetermined frequency band extracted from the upstream detection result and signals in the predetermined frequency band extracted from the downstream detection result. Accordingly, a downstream data section that is highly matched with the upstream data section can be identified with high accuracy, and the amount of displacement of the base material in the transport direction can be detected with high accuracy on the basis of an identification result.

Provided is a medium processing apparatus, comprising: transport unit configured to transport a medium, a drying device configured to heat the medium, a temperature sensor configured to detect a surface temperature of the medium in a heated area, the heated area being heated by the drying device, and a control unit configured to control the drying device based on the surface temperature detected by the temperature sensor. The control unit start a warm-up operation controlling the heating unit to increase the surface temperature of the medium to a predefined temperature range, and controls transport of the medium during the warm-up operation so that the medium is within a predefined range where the medium is located in a detection area of the temperature sensor.

A roll sheet with a continuous sheet wound in a roll form is rotated in a forward direction to supply the sheet to a printing unit. A sensor whose output is changed in accordance with a distance between the sensor and the sheet is used. A rotation direction of the roll sheet is switched from an opposite direction to the forward direction on the basis of the output of the sensor during rotation of the roll sheet in the opposite direction.

A printing apparatus includes a platen including a first guide rail and a second guide rail mutually parallel in a width direction that intersects a transport direction of a medium; an edge holder including a plate-shaped member that covers an end portion of the medium in the width direction, a first engaging portion that engages with the first guide rail, and a second engaging portion that engages with the second guide rail; and a changing portion that is provided on the first engaging portion side and is for changing a position of the plate-shaped member in the width direction. A space in the transport direction formed between the first engaging portion and the first guide rail is narrower than a space in the transport direction formed between the second engaging portion and the second guide rail.

Meandering of a medium at a time of transporting is reduced. A recording apparatus which transports medium and performs recording on the medium is provided. The apparatus includes a recording unit, a medium clamping unit which is provided on a side further upstream than the recording unit in a transport direction, and clamps the medium therebetween, and a medium support unit which is provided on the side further upstream than the medium clamping unit in the transport direction, and supports the medium. The medium is slackened between the medium clamping unit and the medium support unit.

At a printer that feeds a continuous paper unwound from a paper sheet supply unit in a sheet-shape to a printing head portion side via a damper portion, and then prints on a label of the continuous paper, the damper portion is constituted of an outer damper portion and an inner damper portion, which is disposed at a downstream side of feed of the outer damper portion.

A printing assembly for digital printing on a continuous metal strip, including: a digital printing unit having a printing area and a conveyor belt arranged for advancing the continuous metal strip in a longitudinal direction through the printing area, an inlet guide unit located upstream of the printing unit and configured to guide the continuous metal strip along a path comprising at least one first movable bend which is freely movable in the longitudinal direction, and an outlet guide unit located downstream of the digital printing unit and configured to guide the continuous metal strip along a path comprising at least one second movable bend which is freely movable in the longitudinal direction.

Provided in one example is a printing system that has a printing zone with a platen (10), a drive, a suction force generator (18), a media advance sensor (26) to monitor movement of the medium through the printing zone in a medium advance direction, and a controller 28) to perform suction force calibration prior to printing. The suction force calibration includes controlling the drive to cause movement of the medium from an initial position at least partly through the printing zone while the suction force generator is controlled to generate at least one suction force level, determining a suction force level to be used during printing on the medium based on the output of the media advance sensor during the movement, and moving the medium back to the initial position.

A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.