A medium cutter includes a conveyor configured to convey a medium in a conveyance direction, a cutter configured to cut the medium from one end of medium in a cutting direction orthogonal to the conveyance direction, a first holder movable to contact a first surface of the one end of medium, and a second holder configured to contact a second surface of the one end of medium opposite the first surface. The first holder is disposed downstream of the cutter in the conveyance direction, and the first holder moves to the one end of medium to pinch and hold the one end of medium between the first holder and the second holder.

The present invention provides a light-weight spacer for a slitting machine for maintaining the width between slitting knives. The light-weight spacer comprises: a spacer body having a ring structure integrally formed of metal; an inner surface positioned on the inner side of the ring structure and extending along the central axis of the ring structure; an outer surface positioned on the outer side of the ring structure and extending along the central axis of the ring structure; a first side surface extending between the inner surface and the outer surface and being perpendicular thereto; a second side surface opposite to the first side surface and extending between the inner surface and the outer surface; a first plurality of perforations provided on the first side; and a second plurality of perforations provided on the second side.

In an example, a cutting module may include a housing to engage the cutting module with a drive shaft, a cutter disposed in the housing, and a drive system to drive the cutter such that the cutter cuts media along a media path of an imaging device. The cutting module may move along the drive shaft laterally to the media path.

A longitudinal cutting device with a cutting mechanism, which is arranged between an infeed and a delivery and has rotary cutters movable transverse to the transport direction, comprises transport devices that are arranged on the knife receptacles of these rotary cutters and bridge the region of the cutting mechanism with a conveying effect.

A separator disposing portion 15 is provided with a ball screw 22 and an arm 23. The arm 23 is a member which comes into contact with a holder 17 and a separator disk 18, thereby allowing them to move. The arm 23 is provided with a chuck portion 30 which is connected to a piston 29 and can be fitted to a chuck pedestal 27. The chuck portion 30 comes close to or moves away from an expansion/contraction shaft 16 in association with expansion and contraction of the piston 29. Further, the chuck portion 30 comes into contact with an outer circumference surface of the holder 17, a side surface of the holder 17 and a side surface of the separator disk 18 in association with movements of the piston 29 and a driving portion 26.

Arrangement for cutting notches in box blanks fed along a feeding direction L. A feeding portion feeds box blanks. At least a first-fourth cutting devices along the direction L. The first is arranged most upstream and the fourth is arranged most downstream. Each device includes: a first wheel rotating around a first axis transverse to the direction L, the first wheel being on a first side of the blanks; a second wheel rotating around a second axis extending transverse to the direction L parallel to the first axis, the second wheel being in the same plane as the first wheel on an opposite side of the blank; and a cutting element cutting notches. The cutting element extends from either the first or the second wheel towards the other. A control unit controls the operation of the first-fourth devices for different operation combinations.

A separator unit suitable for being used in a cutting line of laminar materials into strips, of the type comprising an expandable shaft, a storage magazine for storing separator tools, which is operatively associated with an end of the expandable shaft, separator tools provided with ring nuts configured to allow the translation of the separator tools from the storage magazine to the expandable shaft, and vice versa, the separator tools being susceptible to being locked on the expandable shaft, and translation apparatus means configured to translate the separator tools along the expandable shaft. The separator unit provides for the expandable shaft to be provided with a first slit adapted to house a locking element with a knurling on its outwards facing surface and susceptible to translating in radial direction and provides for the ring nuts to have a counter-knurling on a length of their surfaces facing the expandable shaft. The knurling and the counter-knurling are configured to fixedly couple when the surface of the locking element is placed in contact with the surfaces of the ring nuts.

A good-quality slit separator having a small amount of fuzziness at a slit part thereof is to be obtained. The present invention includes: a step (S101) of conveying an original sheet (S); and a step (S102) of slitting the original sheet (S) by causing a plurality of slitting blades (72) to cut into the original sheet (S) such that tangent plane angles (.sub.3) in a tangent plane, on which a slitting position is in contact with the original sheet (S), are substantially identical with each other.

A apparatus for processing sheets includes: a conveyance unit conveying a sheet; a processing unit provided with processing members processing the sheet along a conveyance direction, and a moving unit moving the processing members in a width direction; and a controller. When a processing position in the width direction to be processed by the processing members is different between a sheet conveyed ahead by the conveyance unit and a subsequent sheet, the controller processes the subsequent sheet by using a processing member having a minimum movement distance from the processing position of the sheet conveyed ahead among the processing members.

The present invention is configured such that an adjustment nut for fixing spacers and blades repeatedly fitted to a shaft is provided with at least two concentricity adjustment screws, and, with the spacers and the blades fixed by the adjustment nut, the spacers and the blades are pushed by the concentricity adjustment screws in the direction of the shaft to enable concentricity adjustment, and thus, without causing defects, the blades are protected and can be used for a long time. In particular, according to the present invention, while one side shaft with respect to a diagnostic sheet is elastically supported, position adjustment in the longitudinal direction thereof is possible, and also projections are formed on the peripheries of the surfaces of the spacers facing the cutting edges of the blades thus to provide extra spaces for the blades in which the blades move, thereby preventing the deformation of cut strips and the damages on the blades.