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.

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.

There is provided an intermediate unit including a transportation path along which a medium, on which printing has been performed by a printing unit that performs printing on the medium by using liquid, is transported to a post processing unit that performs post processing on the medium. The transportation path includes first and second inversion paths in which the medium is inverted upside down, respectively, the second inversion path being provided with a decurling unit that corrects curl of the medium, the first inversion path being not provided with the decurling unit, the first and second inversion paths being selectively used to invert the medium upside down according to printing data for the medium.

There is provided an intermediate unit including a transportation path along which a medium, on which printing has been performed by a printing unit that performs printing on the medium by using liquid, is transported to a post processing unit that performs post processing on the medium. The transportation path includes first and second inversion paths in which the medium is inverted upside down, respectively, the second inversion path being provided with a decurling unit that corrects curl of the medium, the first inversion path being not provided with the decurling unit, the first and second inversion paths being selectively used to invert the medium upside down according to printing data for the medium.

Systems, methods, and devices for mitigating print head dry out. In an example embodiment, a system can be implemented, which includes an arrangement of cross rollers and a registration transport for transporting one or more sheets for printing, and a steering mechanism that drives the sheet(s) into the opposing registration print edges of print heads on the registration transportation, wherein the cross rollers only engage when the sheet is being registered to the appropriate edge of the print heads, thereby allowing the print heads to be exercised prior to drying out. When one or more of the sheets are out of the nip, the nip disengages, thereby allowing the next sheet to be stirred on the opposing edge of the registration print heads. The opposing registration print heads comprise an inboard registration edge and an outboard registration edge.

Systems, methods, and devices for mitigating print head dry out. In an example embodiment, a system can be implemented, which includes an arrangement of cross rollers and a registration transport for transporting one or more sheets for printing, and a steering mechanism that drives the sheet(s) into the opposing registration print edges of print heads on the registration transportation, wherein the cross rollers only engage when the sheet is being registered to the appropriate edge of the print heads, thereby allowing the print heads to be exercised prior to drying out. When one or more of the sheets are out of the nip, the nip disengages, thereby allowing the next sheet to be stirred on the opposing edge of the registration print heads. The opposing registration print heads comprise an inboard registration edge and an outboard registration edge.

A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes at least one sensor, omni wheels, a motor coupled to each omni wheel, a translating carriage, and a processor communicatively coupled to the at least one sensor, the motors, and the translating carriage, wherein the processor calculates a desired movement to move the omni wheels and the translating carriage based on the position of the print media.

A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes at least one sensor, omni wheels, a motor coupled to each omni wheel, a translating carriage, and a processor communicatively coupled to the at least one sensor, the motors, and the translating carriage, wherein the processor calculates a desired movement to move the omni wheels and the translating carriage based on the position of the print media.

A printing apparatus for printing on an elongate printing medium includes the following elements: a transport mechanism for transporting the printing medium; a printing unit including a plurality of print heads arranged at intervals in a transport direction; a detecting unit including at least three detectors arranged as spaced from one another for detecting positions in a width direction of the printing medium; a variation history acquirer for deriving, for each detection cycle, a function approximate curve based on positions of the same location in the transport direction of the printing medium detected by the respective detectors, and acquiring from each function approximate curve, and as a variation history, a deviation amount in the width direction in each of the printing positions; a predicted position calculator for calculating, from the variation history, a predicted position in the width direction for each of the printing position; and a printing controller for printing while correcting the position based on the predicted position.

A printing apparatus for printing on an elongate printing medium includes the following elements: a transport mechanism for transporting the printing medium; a printing unit including a plurality of print heads arranged at intervals in a transport direction; a detecting unit including at least three detectors arranged as spaced from one another for detecting positions in a width direction of the printing medium; a variation history acquirer for deriving, for each detection cycle, a function approximate curve based on positions of the same location in the transport direction of the printing medium detected by the respective detectors, and acquiring from each function approximate curve, and as a variation history, a deviation amount in the width direction in each of the printing positions; a predicted position calculator for calculating, from the variation history, a predicted position in the width direction for each of the printing position; and a printing controller for printing while correcting the position based on the predicted position.