The invention relates to a method of rerolling a rolled-up material web, in particular a rolled-up material web of an elastic material on a rerolling device. Furthermore, the invention relates to a rerolling device for performing the method. The inventive method of rerolling a rolled-up material web of an elastic material on a rerolling device having an-uncoiler and a recoiler, with the material web being rerolled from a large roll rolled up on the uncoiler and having a diameter D to a section roll to be rolled up on the recoiler, and with the uncoiler and/or the recoiler having an actuator, is characterized in that during rerolling, the diameter D of the large roll on the uncoiler and/or the diameter d of the section roll on the recoiler are continuously determined and the performance of an actuator is continuously adjusted by means of this determined parameter. The terms “continuously determined” and “continuously adjusted” are not only to be understood here as an actually continuous, i. e. ongoing, determining or adjusting process, but also as one that takes place in discrete time intervals, the determining taking place multiple times during the rerolling process.

An inkjet recording apparatus includes a feeding-side motor, an inkjet recording unit, a winding-side motor, a feeding-side roll-diameter measuring unit, a winding-side roll-diameter measuring unit, and a motor drive controller. Based on a relationship between motor rotating speeds and roll diameters under conveyance of the recording medium at a specified conveyance speed, the motor drive controller determines a first rotating speed corresponding to a feeding-side roll diameter measured by the feeding-side roll-diameter measuring unit and moreover determines a second rotating speed corresponding to a winding-side roll diameter measured by the winding-side roll-diameter measuring unit to drive the feeding-side motor at the first rotating speed and moreover drive the winding-side motor at the second rotating speed.

A winding condition generating apparatus includes: an input unit; an output unit; and a condition calculation unit. A winding condition calculation unit includes a learning model created by machine learning using a combination of a winding parameter and a winding condition in producing a wound web that satisfies a target winding quality as training data, and calculates a winding condition of a new wound web using the learning model, from a winding parameter of a new wound web input through the input unit. The output unit outputs the winding condition. The winding parameter includes a web width, a web transport velocity, and a web winding length. The winding condition includes a tension of the web at the start of winding and a tension of the web at the end of winding.

A winding condition generating apparatus includes: an input unit; an output unit; and a condition calculation unit. A winding condition calculation unit includes a learning model created by machine learning using a combination of a winding parameter and a winding condition in producing a wound web that satisfies a target winding quality as training data, and calculates a winding condition of a new wound web using the learning model, from a winding parameter of a new wound web input through the input unit. The output unit outputs the winding condition. The winding parameter includes a web width, a web transport velocity, and a web winding length. The winding condition includes a tension of the web at the start of winding and a tension of the web at the end of winding.

It is disclosed a substrate compactness detection method for a printer wherein the printer comprises a roller to receive a substrate roll and a media advance mechanism to receive a substrate from the substrate roll, the method comprising: determining a substrate thickness; advancing the substrate for a length; measuring an angular displacement of the roller caused by the advancing of the substrate; determining the substrate roll radius by using the length and the angular displacement; and calculating a compactness parameter in view of the substrate roll radius and the substrate thickness.

Apparatus for qualification and repair of multi-filament tow are provided herein. In some embodiments, an apparatus in for inspecting and repairing a multi-filament tow includes a first spool having a multi-filament tow wound on the first spool; a first tow tensioner following the first spool to impart a predetermined tension on the multi-filament tow; a de-sizing chamber comprising a heater to heat the multi-filament tow to a first temperature suitable for removing a coating on the multi-filament tow; an inspection chamber configured to inspect the multi-filament tow for defects; a repair chamber configured to repair the defects in the multi-filament tow; a second tow tensioner following the repair chamber to impart a predetermined tension on the multi-filament tow; and a second spool following the second tow tensioner to collect the multi-filament tow.

A web conveying device configured to convey a web and rewind the web into a roll includes: a moving roller arranged between a send-in port for the web and a rewinding roll which is the web rolled, the moving roller configured to be movable in an up-down direction to apply tension to the web or release the tension; and a controller configured to perform control of moving the moving roller to an upper limit position in the up-down direction in an operation of stopping conveyance of the web.

A web conveying device configured to convey a web and rewind the web into a roll includes: a moving roller arranged between a send-in port for the web and a rewinding roll which is the web rolled, the moving roller configured to be movable in an up-down direction to apply tension to the web or release the tension; and a controller configured to perform control of moving the moving roller to an upper limit position in the up-down direction in an operation of stopping conveyance of the web.

A liquid ejection apparatus includes a conveying unit, a winding unit, a printing unit, and a rotation control unit. The conveying unit is configured to intermittently convey a printing medium by a predetermined feed amount. The winding unit is configured to wind the printing medium conveyed by the conveying unit. The printing unit is configured to perform printing on the conveyed printing medium. The rotation control unit is configured to control the winding unit to rotate in a winding direction at a predetermined timing after the conveying unit has started to convey the printing medium intermittently, and then cause the winding unit to rotate in a reverse direction opposite to the winding direction.

A liquid ejection apparatus includes a conveying unit, a winding unit, a printing unit, and a rotation control unit. The conveying unit is configured to intermittently convey a printing medium by a predetermined feed amount. The winding unit is configured to wind the printing medium conveyed by the conveying unit. The printing unit is configured to perform printing on the conveyed printing medium. The rotation control unit is configured to control the winding unit to rotate in a winding direction at a predetermined timing after the conveying unit has started to convey the printing medium intermittently, and then cause the winding unit to rotate in a reverse direction opposite to the winding direction.