The invention relates to a packaging machine for producing a packaging (20) from a paper-containing web material (2) and a covering web (3), comprising a first pre-tensioning device (4) for pre-tensioning and stretching the web material (2) in a transport direction (16) of the web material, a second pre-tensioning device (5) for pre-tensioning and stretching the web material (2) in a second direction (17) transverse to the transport direction (16), a shaping device (6) for producing a depression (21) in the web material (2), wherein the depression (21) is designed to receive a filler, a filling device (7) which fills filler into the depression (21), a covering web device which provides the covering web (3) in order to provide a cover (31) for the depression (21), a fixing device (10) which fixes the covering web (3) on the web material (2), and a discharge device (8) which discharges the produced packaging out of the packaging machine.

A method for printing a web of packaging material for packages holding liquid food products is provided. The method comprises receiving a web of packaging material, identifying a first register mark using a first sensor, determining a first register mark position based on the first register mark, determining a second register mark position area based on the first register mark position, identifying a second register mark within the second register mark position area using a second sensor and determining a second register mark position for the second register mark, determining a second area position of the second area based on the second register mark position, adjusting the web in relation to printer bars in accordance with the second area position, determining a second area position of the second area based on the second register mark position, and printing the second area by using the printer bars.

A base material processing apparatus includes a transport mechanism, a mark detector, and a calculating unit. The transport mechanism transports an elongated strip-shaped base material in a longitudinal direction thereof along a predetermined transport path. The mark detector acquires a detection result by detecting a mark continuously at a detecting position on the transport path. The mark is applied previously to an end of the base material in a width direction thereof. The calculating unit calculates a transport speed of the base material, the amount of positional deviation of the base material in a transport direction, and tension on the base material applied in the transport direction on the basis of the detection result and information about the mark applied previously to the base material.

A base material processing apparatus includes a transport mechanism, a mark detector, and a calculating unit. The transport mechanism transports an elongated strip-shaped base material in a longitudinal direction thereof along a predetermined transport path. The mark detector acquires a detection result by detecting a mark continuously at a detecting position on the transport path. The mark is applied previously to an end of the base material in a width direction thereof. The calculating unit calculates a transport speed of the base material, the amount of positional deviation of the base material in a transport direction, and tension on the base material applied in the transport direction on the basis of the detection result and information about the mark applied previously to the base material.

The present invention relates to a method for processing a covering roll sheet (20) of a package, wherein the covering roll sheet (20) covers a package body (51) in the manner of a lid, comprising the steps of: drawing the covering roll sheet (20) off an endless roll (22), tensioning the covering roll sheet (20), determining an offset between a first marking on the covering roll sheet (20) and a second marking (34) on the package body (51), and stretching the covering roll sheet (20) in a manner dependent on the determined offset between the first marking (33) and the second marking (34).

A packaging machine includes a conveying device for advancing a packaging material web at least to a tube forming station at which the web is formed into a tube and for advancing the tube to a tube forming and sealing device to form and longitudinally seal the tube, a tensioning device to control tension of the web and/or of the tube and a control unit to control operation of the packaging machine. The tensioning device has at least one tensioning assembly having at least first and second drive rollers, a first drive motor connected to the first drive roller to rotate the first drive roller and a second drive motor connected to the second drive roller to rotate the second drive roller. The control unit controls the first and second drive motors such that a free loop of the web expands and/or advances between the first and second drive rollers.

A printing device and method is described comprising: controlling movement of a printing medium along a printing medium path to position the printing medium relative to at least one printhead to allow printing on the printing medium by the at least one printhead; and applying a plurality of respective elastic forces in a direction substantially perpendicular to the printing medium path, wherein the respective elastic forces are applied by a plurality of elastic elements of a modular assembly arranged laterally across a width of the printing medium path, wherein the printing medium acts against the elastic forces of the respective elastic elements of the modular assembly.

The disclosure relates to a method of controlling tension of a media during printing. The media is tensioned by supporting a dancer bar coupled at a first end to a first dancer arm which moves about a first pivot. The tension is provided by resisting a net moment acting on the first dancer arm. The method comprises applying a first setting force to the first dancer arm to set the net moment acting on the first dancer arm and adjusting the first setting force to alter the net moment acting on the first dancer arm.

A printing apparatus includes a conveyance unit, a printing unit, and a control unit. The conveyance unit includes a feeding unit, a conveyance roller pair, a feed driving unit, a first encoder, and a second encoder. The control unit is configured to execute a feed adjustment operation of adjusting tension of the medium fed from the feeding unit by controlling the feed driving unit such that the control unit executes the feed adjustment operation based on an output of the second encoder in a first period from a start of rotation of the conveyance roller pair until a specified time elapses and such that the control unit executes the feed adjustment operation based on an output of the first encoder in a second period after completion of the first period.

A printing apparatus includes a conveyance unit, a printing unit, and a control unit. The conveyance unit includes a feeding unit, a conveyance roller pair, a feed driving unit, a first encoder, and a second encoder. The control unit is configured to execute a feed adjustment operation of adjusting tension of the medium fed from the feeding unit by controlling the feed driving unit such that the control unit executes the feed adjustment operation based on an output of the second encoder in a first period from a start of rotation of the conveyance roller pair until a specified time elapses and such that the control unit executes the feed adjustment operation based on an output of the first encoder in a second period after completion of the first period.