A liquid ejection apparatus and a liquid ejection apparatus control method capable of keeping the power consumption of the liquid ejection apparatus within an appropriate range. To this end, control is performed such that a current upper limit value for a conveyor motor is switched in a state where operations of other power consumption units are restricted.

A liquid ejection apparatus and a liquid ejection apparatus control method capable of keeping the power consumption of the liquid ejection apparatus within an appropriate range. To this end, control is performed such that a current upper limit value for a conveyor motor is switched in a state where operations of other power consumption units are restricted.

A sheet aligning device includes a conveying roller, a reference member, and an aligning roller. The conveying roller conveys a sheet in a predetermined conveyance direction along a conveyance path. The reference member defines one boundary of the conveyance path. By the aligning roller, the sheet conveyed by the conveying roller is abutted against the reference member. The reference member has a side surface on a side of the aligning roller. The side surface has a first side surface and a second side surface. The first side surface is along the boundary of the conveyance path. The second side surface is provided contiguous with the first side surface at least on one of an upstream and downstream sides of the first side surface in the conveyance direction, and is further separated from the conveyance path as it is farther from the first side surface.

A sheet aligning device includes a conveying roller, a reference member, and an aligning roller. The conveying roller conveys a sheet in a predetermined conveyance direction along a conveyance path. The reference member defines one boundary of the conveyance path. By the aligning roller, the sheet conveyed by the conveying roller is abutted against the reference member. The reference member has a side surface on a side of the aligning roller. The side surface has a first side surface and a second side surface. The first side surface is along the boundary of the conveyance path. The second side surface is provided contiguous with the first side surface at least on one of an upstream and downstream sides of the first side surface in the conveyance direction, and is further separated from the conveyance path as it is farther from the first side surface.

A sheet conveyance apparatus includes a first driving roller and a second driving roller, a first steering portion, a second steering portion, a first driven roller, a second driven roller, and a separation mechanism configured to switch a state of the first driven roller and the second driven roller between an abutment state and a separation state. The separation mechanism includes a swing member configured to support the first driven roller and the second driven roller and swing around a first swing axis extending along the sheet conveyance direction. The first swing axis is positioned between the first driven roller and the second driven roller in the sheet width direction.

A sheet conveyance apparatus includes a first driving roller and a second driving roller, a first steering portion, a second steering portion, a first driven roller, a second driven roller, and a separation mechanism configured to switch a state of the first driven roller and the second driven roller between an abutment state and a separation state. The separation mechanism includes a swing member configured to support the first driven roller and the second driven roller and swing around a first swing axis extending along the sheet conveyance direction. The first swing axis is positioned between the first driven roller and the second driven roller in the sheet width direction.

A medium transport device 1 includes a transport section 120 configured to transport a medium P; a detection section 101 configured to detect the medium P transported by the transport section 120 via a detection surface 101A; a cleaning section 110 configured to clean the detection surface 101A; a housing 53 configured to house the transport section 120, the detection section 101, and the cleaning section 110; and a door section 6 configured to open and close the housing 53, wherein the cleaning section 110 is configured to slide with respect to the detection surface 101A in conjunction with opening and closing of the door section 6.

A medium transport device 1 includes a transport section 120 configured to transport a medium P; a detection section 101 configured to detect the medium P transported by the transport section 120 via a detection surface 101A; a cleaning section 110 configured to clean the detection surface 101A; a housing 53 configured to house the transport section 120, the detection section 101, and the cleaning section 110; and a door section 6 configured to open and close the housing 53, wherein the cleaning section 110 is configured to slide with respect to the detection surface 101A in conjunction with opening and closing of the door section 6.

A power transmission device includes a first pulley driven by a first drive source; a second pulley driven by a second drive source; a first power transmission belt that is wound around the first pulley and an object to be driven and that transmits power from the first pulley to the object to be driven; a second power transmission belt that is wound around the second pulley and the object to be driven and that transmits power from the second pulley to the object to be driven; a first tension applying section that applies tension to the first power transmission belt; a second tension applying section that applies tension to the second power transmission belt; and a load applying section that applies a load to the first tension applying section and applies a load to the second tension applying section.

A power transmission device includes a first pulley driven by a first drive source; a second pulley driven by a second drive source; a first power transmission belt that is wound around the first pulley and an object to be driven and that transmits power from the first pulley to the object to be driven; a second power transmission belt that is wound around the second pulley and the object to be driven and that transmits power from the second pulley to the object to be driven; a first tension applying section that applies tension to the first power transmission belt; a second tension applying section that applies tension to the second power transmission belt; and a load applying section that applies a load to the first tension applying section and applies a load to the second tension applying section.