Plant for the production of paper logs, including a number of operating units configured to produce logs of paper material starting from a web of paper material unwound from one or more corresponding reels and slaved to a control unit that, in turn, is configured for driving the operating units such that each of them has a predetermined production speed. The said control unit is programmed to process data contained in a database individually associated with each reel and representative of defects classified according to a predictive classification based on the effects of the defects in the production of the logs and further representative of the location of defects on the web unwound from the reel. The control unit receives position data related to the instantaneous diameter of the reel from a corresponding detection means. The control unit is programmed to modify the production speed in function of the instantaneous position and of the class of each of the defects.

A duplex printing system and method of configuring the same are described. In examples, an image, such as a test pattern, on one side of a print substrate is printed to be out of phase with an image, such as a test pattern, on the other side of the print substrate. This is achieved by adjusting a configuration of a print buffer that is located between first and second print engines of the duplex printing system. In particular examples, a length of a web within the print buffer is controlled such that the images are out of phase.

Method for producing logs (B1, B2) of continuous thin products, or web products, in optimized manner by tracking defects in the surface and/or in the thickness detected on the products, comprising a step of continuously winding a thin product (T) into logs (B1, B2) on a winding machine, in order to produce at least one primary log, a step of identifying any defects in the surface and/or the thickness of said continuous thin product, a step of storing in a database system (31), outside the primary log, information related to said defects comprising at least the position of said defects with respect to a reference system associated with the primary log, a step of assigning a primary ID code to said primary log, a step of marking said primary log with said primary code, a step of associating, in said database system (31), information on said defects with the primary ID code of the primary log, so that, in said database, to a given primary ID code information are associated related to defects in the surface and/or the thickness of the respective primary log, that can be identified based on their position on the primary log, a step of using said information on the defects of the primary log, stored in the database system (31), in order to optimize at least one subsequent processing of the product wound into the respective primary log, said use providing for recognizing the primary code of the primary log being processed and the processing of the product based on the information on the surface defects associated to the primary log.

To easily specify the position of a defect in a separator, a method for producing a separator original sheet (12b) includes the steps of: forming a separator original sheet (12b) including a separator original sheet (12c) and a heat-resistant layer coated on the separator original sheet (12c); detecting a defect (D) in the separator original sheet (12b); and recording information including information on a position of the defect (D) which position is a position in the width direction of the separator original sheet (12b).

A duplex printing system and method of configuring the same are described. In examples, an image, such as a test pattern, on one side of a print substrate is printed to be out of phase with an image, such as a test pattern, on the other side of the print substrate. This is achieved by adjusting a configuration of a print buffer that is located between first and second print engines of the duplex printing system. In particular examples, a length of a web within the print buffer is controlled such that the images are out of phase.

An apparatus and method for tracking defects in sheet materials. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. 1.72(b). As stated in 37 C.F.R. 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading Abstract of the Disclosure. The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

An apparatus for the production a cushion product from a single- or multi-layer continuous paper strip includes a feed unit for drawing the paper strip into the apparatus, a cutting unit for cutting the cushion product from the paper strip, and control electronics for the activation of the cutting unit according to a predetermined motion profile. A sensor captures a rotation angle position of the feed unit. The control electronics are configured to activate the feed unit continuously and to start an activation of the cutting unit for a discontinuous cutting operation during capturing a predetermined actual rotation angle position of the feed unit.

An apparatus and method for tracking defects in sheet materials. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. 1.72(b). As stated in 37 C.F.R. 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading Abstract of the Disclosure. The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

A method of producing a film is provided. The method involves a winding step including a point-of-interest detecting step including detecting a point-of-interest on the film, a number-of-turns counting step including counting the number of turns of the film wound around a winding core, and a number-of-turns storing step including storing, in association with the number of turns of the film wound around the winding core, a position of the point-of-interest in a direction of transfer of the film. The method eliminates the need for a step of printing on a film for the purpose of locating a point-of-interest on the film.

A base material processing apparatus includes a transport mechanism, a force detection part, a meandering prediction part, a processing part, and a controller. The transport mechanism transports an elongated strip-shaped base material in a longitudinal direction thereof along a transport path aimed by a plurality of rollers of the transport mechanism. The force detection part detects a force applied to a sensing roller in an axial direction of a rotation shaft thereof, the sensing roller being at least one of the plurality of rollers. The controller predicts the meandering state of the base material to output meandering prediction information, based on the force applied to the sensing roller in the axial direction of the rotation shaft thereof. The meandering prediction part corrects the widthwise position of the base material relative to the processing part, based on the meandering prediction information. Thus, the base material processing apparatus is capable of sensing the meandering state of the base material through the use of the existing rollers of the transport mechanism in the processing part, and is capable of correcting the widthwise position of the base material relative to the processing part.