A sheet conveying apparatus includes a second conveying roller adjoining a motor driven first conveying roller, a phase determiner to determine a rotational phase of a rotor of the motor, a controller, and a discriminator. The controller controls a drive current flowing through a winding of the motor to reduce phase deviation. The discriminator executes a discrimination regarding one of whether a front end of a sheet has reached a nip portion and whether a rear end of the sheet has passed through a nip portion. The controller controls such that the first conveying roller rotates at a first conveying roller peripheral velocity which is different from a peripheral velocity of the second conveying roller. The discriminator executes the discrimination based on a value of a parameter corresponding to a load torque applied to the rotor where the first conveying roller rotates at the first conveying roller peripheral velocity.

In accordance with an embodiment, a label processing apparatus comprises a conveyance mechanism, a radio wave shielding mechanism, an antenna and a reader/writer. The conveyance mechanism conveys a paper on which a a plurality of s are attached with a RFID tag are arranged. The radio wave shielding mechanism includes an opening moving in synchronization with each RFID tag arranged on the paper conveyed by the conveyance mechanism. The antenna receives and transmits a radio wave for communication via the opening while the opening moves in synchronization with the RFID tag. The reader/writer communicates with the RFID tag of the paper conveyed by the conveyance mechanism via the antenna.

A sheet conveyance device includes a shape detecting portion, and a switch control portion. The shape detecting portion detects a shape of a sheet at a detection position between a first conveyance member and a second conveyance member. The switch control portion, when a front end of the sheet has passed a arrangement position at which the first conveyance member is arranged, switches an detection interval at which the shape of the sheet is detected by the shape detecting portion, to a first interval that corresponds to a rotation speed of the first conveyance member, and when a rear end of the sheet has passed the arrangement position, switches the detection interval to a second interval that corresponds to the rotation speed of the second conveyance member.

A gluing group for a rewinding machine for applying glue to an end edge of a log comprising a delivery roller (12) supported in an idle manner by supporting and translation guiding elements (15, 16), delivery means (20) for delivering a glue line (11) on one of the generatrices of the delivery roller (12), a linear actuator (30) connected to said delivery roller (12) to transmit the approaching and distancing movement of the delivery roller (12) against the paper (11) being wound onto a contrast roller (115).

A rewinding machine comprising such gluing group and a related method for gluing the end edge also form part of the invention.

A sheet conveying device includes a sheet container, a separation feeder, a plurality of conveyance drivers, a multifeed detector, a sheet detector, and a conveyance controller. The conveyance drivers are driven to convey a sheet to a conveyance completion position on a sheet conveyance path. The multifeed detector detects occurrence of a multifeed on the conveyance path. The sheet detector detects presence or absence of the sheet at a sheet detection point on the conveyance path. The conveyance controller controls the conveyance drivers to be continuously driven until a preceding sheet preceding multifed sheets is conveyed to the conveyance completion position after the multifeed detector detects the occurrence of the multifeed. The conveyance controller controls the conveyance drivers to stop in a period in which at least one of the multifed sheets is present at the sheet detection point after the preceding sheet is conveyed to the conveyance completion position.

Provided is an uneven roller of which a surface coming into contact with a medium is provided with a plurality of protrusions and recesses, the uneven roller including a shaft portion, a reference portion mounted on the shaft portion, a ring portion that is positioned closer to a side, to which a first direction along an axial direction of the shaft portion extends, than the reference portion is and that is mounted on the shaft portion, and a restriction portion that is positioned closer to the side, to which the first direction extends, than the ring portion is and that is mounted on the shaft portion to restrict movement of the ring portion in the first direction. The ring portion is composed of a plurality of uneven rings disposed along the axial direction, the uneven ring including a plurality of protrusion portions disposed along a circumferential direction.

A printing device includes a placement unit on which a plurality of media are stackable, a printing unit, and a feed roller that feeds the medium placed on the placement unit in a transport direction. Before starting feeding of the medium downstream in the transport direction, by repeating, a plurality of times, a preliminary feed operation of coming into contact with a first medium and rotating, and a non-feed operation of not feeding the medium, the feed roller forms a misaligned stacking state in which the first medium is disposed further downstream, in the transport direction, than at least some of the plurality of media disposed closer to the placement unit side. The feed roller feeds the first medium downstream in the transport direction from the placement unit subsequent to formation of the misaligned stacking state.

A sheet processing apparatus includes a stacking unit configured to stack a plurality of sheets, an alignment unit including a supporting portion on which the sheets are loaded, the alignment unit being configured to align positions of the sheets loaded on the supporting portion, and a bonding unit configured to bond the sheets loaded on the supporting portion to each other. The alignment unit is configured to align a position of the second sheet stack with the first sheet stack. The bonding unit is configured to heat and pressurize the second sheet stack aligned by the alignment unit such that sheets of the second sheet stack are bonded to each other with the adhesive and the first sheet stack and the second sheet stack are bonded to each other with the adhesive.

An image forming apparatus includes feeding, conveying, and separating members, and detecting, image forming, and control units. The feeding member feeds a recording material placed on a tray. The separating member and the conveying member separate recording materials at a nip. The detecting unit detects that the recording materials have been fed to the nip. The image forming unit forms an image on fed recording material. The control unit switches between a first and second control. Under the first control, the feeding member starts feeding a recording material placed on the tray, and ends feeding before a recording material trailing end passes through the feeding member. Under the second control, the feeding member starts feeding a recording material placed on the tray, and ends feeding after a recording material trailing end passes through the feeding member when the detection unit detects that the recording materials are fed to the nip.

In accordance with an embodiment, a sheet processing apparatus, containing a controller that acquires a predetermined data associated with a physical quantity of one of a driving motor or a driven member driven by the motor based on a predetermined signal, compare the predetermined data with a threshold value, and determine whether to transmit a request for increasing a discharge interval of a sheet based on the comparative result.