Abstract: A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-?-olefin copolymer and a rosin component.

Abstract: A data analysis apparatus (100) includes a group extracting unit (123) and an analysis executing unit (124). When a parameter is changed, by using summary information (121A), the group extracting unit (123) extracts a facility requiring recalculation of a degradation level from respective facilities corresponding to a plurality of degradation levels included in the summary information (121A). The analysis executing unit (124) recalculates a degradation level of the facility extracted by the group extracting unit (123) by using raw data of the extracted facility and the parameter after change.

Abstract: A development unit according to an embodiment may include a developer carrier configured to carry developer on a surface thereof; a layer regulation member being elongate in a direction and provided facing the developer carrier; and a frame supporting the developer carrier and the layer regulation member. The layer regulation member comprises a metal blade that contacts the developer carrier and a support member attached to the frame and supporting the blade. A free length of the blade at an end portion in a longitudinal direction of the layer regulation member is shorter than a free length of the blade at a center portion in the longitudinal direction of the layer regulation member.

Abstract: A development unit according to an embodiment may include a developer carrier configured to carry developer on a surface thereof; a layer regulation member being elongate in a direction and provided facing the developer carrier; and a frame supporting the developer carrier and the layer regulation member. The layer regulation member comprises a metal blade that contacts the developer carrier and a support member attached to the frame and supporting the blade. A free length of the blade at an end portion in a longitudinal direction of the layer regulation member is shorter than a free length of the blade at a center portion in the longitudinal direction of the layer regulation member.

Abstract: Embodiments provide a particle production apparatus enabling the production of particles having an intended particle size and a narrow particle size distribution. A particle production apparatus includes a rotary disk and a material supply portion. In the material supply portion, a gas supply port is configured to supply a gas formed outside a material supply port. The gas supplied from the gas supply port directs the material supplied from the material supply port in such a way that the material comes into contact with the surface of the cylindrical portion.

Abstract: A medical simulator includes: a luminal organ model having flexibility and having a shape that simulates at least one luminal organ, the luminal organ model including a constricted wall portion having a lumen cross-sectional area smaller than the lumen cross-sectional area of a periphery of the constricted wall portion, the constricted wall portion being provided in a first specific region including a portion corresponding to one end portion of one luminal organ or corresponding to a joining portion of two luminal organs; a first space formation portion that circumferentially covers at least an outer periphery of the first specific region of the luminal organ model to form a first sealed space at the outer periphery of the first specific region; and a fluid controller that controls a fluid pressure of a to-be-controlled fluid within the first sealed space to expand or contract the lumen cross-sectional area of the constricted wall portion of the luminal organ model.

Abstract: A developer container includes: a body in which a plurality of developer chambers that store developer are arranged, each developer chamber having an opening; and a plurality of covers that seal the openings of the plurality of developer chambers, the plurality of covers being separately provided to correspond to the openings of the plurality of developer chambers.

Abstract: A developer container according to an embodiment includes: a container having a space that contains a developer; an optical system includes a first optical member including first end face exposed to a containing space in the container and a second optical member including a second end face exposed to the containing space and being opposed to the first end face in a first direction, and on which the light is incident through the second end face; a shaft provided in the containing space to be rotatable about the first direction; a cleaning member provided to the shaft to be movable in the first direction to clean the first and second end faces by passing through a gap with a rotation of the shaft; and a guide member provided upstream of the optical system and that comes into contact with the cleaning member to guide the cleaning member to a gap.

Abstract: Embodiments provide a particle production apparatus enabling the production of particles having an intended particle size and a narrow particle size distribution. A particle production apparatus includes a rotary disk and a material supply portion. In the material supply portion, a gas supply port is configured to supply a gas formed outside a material supply port. The gas supplied from the gas supply port directs the material supplied from the material supply port in such a way that the material comes into contact with the surface of the cylindrical portion.

Abstract: A developer container includes: a body in which a plurality of developer chambers that store developer are arranged, each developer chamber having an opening; and a plurality of covers that seal the openings of the plurality of developer chambers, the plurality of covers being separately provided to correspond to the openings of the plurality of developer chambers.

Abstract: A developer container according to an embodiment includes: a container having a space that contains a developer; an optical system includes a first optical member including first end face exposed to a containing space in the container and a second optical member including a second end face exposed to the containing space and being opposed to the first end face in a first direction, and on which the light is incident through the second end face; a shaft provided in the containing space to be rotatable about the first direction; a cleaning member provided to the shaft to be movable in the first direction to clean the first and second end faces by passing through a gap with a rotation of the shaft; and a guide member provided upstream of the optical system and that comes into contact with the cleaning member to guide the cleaning member to a gap.

Abstract: A developer container includes a memory device with a first marker; and a main body with a second marker, the main body being configured to accommodate a developer. The memory device is attached to the main body such that both the first marker and the second marker are visually recognized.

Abstract: A developer container includes a memory device with a first marker; and a main body with a second marker, the main body being configured to accommodate a developer. The memory device is attached to the main body such that both the first marker and the second marker are visually recognized.

Abstract: A developer container is described that is capable of preventing the developer held inside the container from being squirted to the outside. A cartridge, an image formation unit and an image formation apparatus are described that are each provided with the developer container. The developer container has: a first member; a second member that is combined with the first member such that the first and second members form a developer storage room; and a third member that covers a boundary portion between the first member and the second member. An aspect of the invention is that it can prevent the developer from being squirted to the outside of the developer container.