Provided is a sheet conveying apparatus that includes a conveying unit capable of changing its posture through rotation, and forms a sheet conveyance path capable of conveying a sheet without fail regardless of which posture the conveying unit is in. A first conveying unit is capable of being in a first posture and in a second posture by rotating from the first posture. In a case where the first conveying unit is in the first posture, a sheet conveyance path is formed in which the first conveyance path, the second conveyance path, and the third conveyance path are connected in this order. In a case where the first conveying unit is in the second posture, a sheet conveyance path is formed in which the first conveyance path and the third conveyance path are connected in this order.

A scanning device includes a casing holding a original document table. A facing area is provided to the casing, and a rectangular hole is formed on the facing area. The rectangular hole has edges extending along a main scanning direction and edges extending along a sub-scanning direction. The edges extending along the sub-scanning direction are located in a central area of a photoelectric conversion element row of a sensor assembly in the main scanning direction. The sensor assembly scans the rectangular hole and detects a edge extending along the main scanning direction and a edge extending along the sub-scanning direction, thereby determines a scanning start position.

An original reading apparatus includes: a reading unit configured to read an original placed on a platen while moving in a predetermined direction in a housing; a sensor provided in the housing and configured to detect presence of the original in a predetermined position on the platen to identify a size of the original; a holding member movable in the housing and configured to hold the sensor and a cable extending from the sensor; and a cover configured to cover a predetermined space on a rear side of the platen mounted to the housing. A grip portion used by an operator to move the holding member is provided at one end of the holding member extending to the predetermined space through an opening portion in a wall on a rear side of the housing. When the cover is removed, the operator is allowed to grip the grip portion.

An original reading apparatus includes: a reading unit configured to read an original placed on a platen while moving in a predetermined direction in a housing; a sensor provided in the housing and configured to detect presence of the original in a predetermined position on the platen to identify a size of the original; a holding member movable in the housing and configured to hold the sensor and a cable extending from the sensor; and a cover configured to cover a predetermined space on a rear side of the platen mounted to the housing. A grip portion used by an operator to move the holding member is provided at one end of the holding member extending to the predetermined space through an opening portion in a wall on a rear side of the housing. When the cover is removed, the operator is allowed to grip the grip portion.

A sheet conveyance apparatus includes a drive transmission mechanism configured to transmit a driving force from a driving source to a rotary conveyance member. The drive transmission mechanism includes a shaft, a first rotary member supported on the shaft and configured to rotate by being driven by the driving source, a second rotary member supported on the shaft and configured to rotate the rotary conveyance member, a drive transmission member provided movably in an axial direction of the shaft, and configured to transmit the driving force between the first rotary member and the second rotary member, and a moving unit configured to move the drive transmission member to a transmission position and a release position. The drive transmission member engages the first and second rotary members with each other at the transmission position, and releases engagement of the first and second rotary members at the release position.

A system for coupling a mask to a mask holder. The system includes a base, an aperture; mask holder cover supporting elements arranged to move between a first position and a third position while supporting the mask holder cover; mask supporting elements arranged to move between a fourth position and a sixth position while supporting the mask; mask holder base supporting elements arranged to support the mask holder base. When the mask holder cover supporting elements are at the first position and the mask supporting elements are at the third position the mask holder cover, the mask and the base are spaced apart from each other. When the mask holder cover supporting elements are at the third position and the mask supporting elements are at the sixth position the mask holder cover, the mask and the base are connected to each other.

This conveying hand is used for conveying a conveyed object in an adsorbed state with a negative pressure, and comprises a pad having a contact portion that contacts the conveyed object and a concave portion having an internal space that can be evacuated; a base that moves while loading the pad; a first elastic member that movably supports the pad on the base in the direction of gravity of the conveyed object and restricts a movement of the pad on the base in the direction perpendicular to the direction of gravity; and a second elastic member that seals a space communicating with the internal space of the concave portion and movably supports the pad on the base in the direction of gravity.

A linear motor with high heat recovery efficiency that inhibits the rise in surface temperature is offered. The linear motor is disposed in a surrounding member (142) and facing a flow passage (142a) of a liquid for regulating temperature, and is provided with a coil unit (141) having at least a part thereof in contact with the liquid. The coil unit (141) is provided with a coil body (144), a mold layer (143) that covers the coil body and holds it in specific form, and a liquid protection layer (150) that covers the mold layer (143) and has liquid protection properties.

Provided is an interferometer system that irradiates an object to be measured with measuring light to thereby measure the position of the object to be measured. The interferometer system includes a laser light source; an interferometer configured to separate laser light emitted from an emission opening of the laser light source into the measuring light and reference light; and an optical path protecting member configured to surround an optical axis such that the laser light passes through the inside thereof and of which one opening is in contact with the emission opening.

Provided is a stage apparatus that includes a first movable unit; a linear motor that includes a stator coil array arranged over a stroke range in a predetermined direction of the first movable unit and a mover magnet fixed to the first movable unit; a second movable unit that is arranged to face the first movable unit via a space and relatively moves with respect to the first movable unit in the predetermined direction; and a switch unit that forms a closed circuit including coils in the stator coil array and a resistance during operation of a dynamic brake, wherein the resistance value of a first coil located at a center region of the stroke range in the stator coil array is larger than that of a second coil located toward an end side of the stroke range rather than the center region in the stator coil array.