This disclosure describes techniques for automatically controlling the operation of a slitter (40) to convert a web (20) of material into smaller slit rolls (64, 66, 68). A slitter director (60) may automatically control the operation of a slitter (40) for defect removal, web splicing, and/or slit roll rejection based on continually registering previously-generated anomaly data (62) with physical locations of the web (20).

An image forming apparatus includes a housing, a feeding tray capable of being inserted into and pulled out from the housing, a feed roller, and one or more detection units. The feeding tray includes a first accommodation part in which a roll body having a configuration where a sheet-shaped medium is rolled in a roll shape is accommodated and a second accommodation part in which a plurality of sheet-shaped media are accommodated in a state of being stacked. The feed roller feeds a sheet-shaped medium from the feeding tray toward a conveying path. The image forming unit forms an image on a sheet-shaped medium provided in the conveying path. The one or more detection units detect whether a sheet-shaped medium is arranged in a predetermined position in the feeding tray.

An image forming apparatus includes a housing, a feeding tray capable of being inserted into and pulled out from the housing, a feed roller, and one or more detection units. The feeding tray includes a first accommodation part in which a roll body having a configuration where a sheet-shaped medium is rolled in a roll shape is accommodated and a second accommodation part in which a plurality of sheet-shaped media are accommodated in a state of being stacked. The feed roller feeds a sheet-shaped medium from the feeding tray toward a conveying path. The image forming unit forms an image on a sheet-shaped medium provided in the conveying path. The one or more detection units detect whether a sheet-shaped medium is arranged in a predetermined position in the feeding tray.

The printer is a printer for printing on a label continuous body including a label detecting unit having a light-emitting portion configured to emit a detecting light and a light-receiving portion configured to receive the detecting light and a control unit configured to adjust a light emitting output of the detecting light in the light-emitting portion, so as to bring an output voltage from the label detecting unit when the light-receiving portion receives a detecting light through the liner to which the label is not temporarily attached, closer to an output voltage from the label detecting unit when the light-receiving portion receives a detecting light through a state in which there is no label continuous body between the light-emitting portion and the light-receiving portion.

A conveyer includes: a supporting member which supports a roll body having a sheet wound therearound; a conveyance roller which conveys the sheet; a guide member; an urging member which urges the guide member; a sensor; and a controller. The controller is configured: to determine a target position of the guide member and a permissible position in accordance with the target position; to control a rotation amount of the supporting member and/or a rotation amount of the conveyance roller; to determine whether or not a position of the guide member exceeds the permissible position; and to perform a notification of a conveying error of the sheet.

A method for detecting irregularities on a material strand made of an elastomeric material comprises the steps of: (a) providing a material strand which defines a longitudinal axis along which the material strand is to be conveyed; (b) bringing a detection element in contact with the material strand, wherein at least one of the detection element being movably mounted in a direction of deflection transverse to the longitudinal axis and a force can act on the detection element in a force direction, (c) setting up a relative movement between the detection element and the material strand along the longitudinal axis; and (d) detecting at least one of a deflection of the detection element in the deflection direction and a force acting on the detection element in the force direction, so as to detect irregularities in the material strand.

A method for detecting irregularities on a material strand made of an elastomeric material comprises the steps of: (a) providing a material strand which defines a longitudinal axis along which the material strand is to be conveyed; (b) bringing a detection element in contact with the material strand, wherein at least one of the detection element being movably mounted in a direction of deflection transverse to the longitudinal axis and a force can act on the detection element in a force direction, (c) setting up a relative movement between the detection element and the material strand along the longitudinal axis; and (d) detecting at least one of a deflection of the detection element in the deflection direction and a force acting on the detection element in the force direction, so as to detect irregularities in the material strand.

A conveyance unit includes a feeding unit that feeds a medium from a roll, a conveyance roller pair that conveys the medium toward a printing unit, an intermediate roller pair that conveys, toward the conveyance roller pair, the medium fed by the feeding unit, a first driving unit that rotates a first driving roller, and a load changing unit that changes a pressing load acting between a second driving roller and a second driven roller. A control unit can execute a first control that controls the load changing unit such that the pressing load is a first pressing load when the first driving roller is rotated in an intermittent conveyance, and execute a second control that controls the load changing unit such that the pressing load is not generated when the rotation of the first driving roller is stopped in the intermittent conveyance.

A conveyance unit includes a feeding unit that feeds a medium from a roll, a conveyance roller pair that conveys the medium toward a printing unit, an intermediate roller pair that conveys, toward the conveyance roller pair, the medium fed by the feeding unit, a first driving unit that rotates a first driving roller, and a load changing unit that changes a pressing load acting between a second driving roller and a second driven roller. A control unit can execute a first control that controls the load changing unit such that the pressing load is a first pressing load when the first driving roller is rotated in an intermittent conveyance, and execute a second control that controls the load changing unit such that the pressing load is not generated when the rotation of the first driving roller is stopped in the intermittent conveyance.

A printing apparatus that includes a holding unit configured to hold a roll sheet performs supplying the sheet by rotating the roll sheet held by the holding unit; nipping and conveying the supplied sheet; performing printing on the conveyed sheet; detecting occurrence of a print medium jam of the sheet; and, if the printing apparatus has detected a print medium jam of the sheet, performing a control process of supplying the sheet in a state in which the conveying is stopped.