Abstract: Uniform exhaustion can be realized with a relatively simple structure in a vacuum pump device. A vacuum pump portion includes an outer rotor and an inner stator, a lifting-type gate valve portion includes a valve body and a valve seat, and the valve body is lifted/lowered with respect to the valve seat along a rotating shaft direction. And the inner stator includes a through hole along the rotating shaft direction of the vacuum pump portion, and at least a part of a supporting member which supports the valve body is disposed in the through hole.

Abstract: Provided is a vacuum pump that can realize energy conservation when performing abatement of exhaust gas. A vacuum pump that sucks in and exhausts exhaust gas includes a motor serving as a drive source, and a first controller that controls driving of the motor. The first controller monitors a state of the motor, and in a case in which the state of the motor is a specific state excluding when starting up and when stopped, outputs a specific signal (process signal) to an external entity.

Abstract: Uniform exhaustion can be realized with a relatively simple structure in a vacuum pump device. A vacuum pump portion includes an outer rotor and an inner stator, a lifting-type gate valve portion includes a valve body and a valve seat, and the valve body is lifted/lowered with respect to the valve seat along a rotating shaft direction. And the inner stator includes a through hole along the rotating shaft direction of the vacuum pump portion, and at least a part of a supporting member which supports the valve body is disposed in the through hole.

Abstract: A vacuum pump in which a spark is not generated even when a rotor component and a stator component are brought into contact, and an explosive reaction in a vacuum container can be prevented, and a protection portion provided in the vacuum pump are provided. On head part sides of a thread ridge to a thread ridge of a threaded spacer with a narrow clearance of a gas channel therebetween, a protection portion 1a to a protection portion made of non-metal are formed in a peripheral state. A protection portion is similarly formed in the peripheral state also on an inner peripheral surface side of a stator blade spacer opposed to a distal end of a rotor blade with a narrow clearance of the gas channel. The protection portion is formed of non-metal with a sufficient thickness so that metal materials of base materials are not brought into contact with each other even when a rotor blade and a stationary portion are brought into contact with each other.

Abstract: To provide a deposit detection device capable of detecting with accuracy and alarming deposits deposited in an exhaust pump used for various processes regardless of kinds and flow rate of process gas, and to provide an exhaust pump equipped with the deposit detection device. A pump control device 50 of an exhaust pump P comprises a deposit detection device which executes, as initial process, steps of reading electric current value of a motor for rotating a rotor and obtaining and storing an initial electric current value of the motor based on the electric current values read; and then executes, as next process, steps of reading the electric current value of the motor, obtaining a current value of the motor based on the electric current values read, and obtaining quantity of fluctuation of the current value of the electric current value of the motor relative to the initial value of the electric current value of the motor, thereby detecting the deposit in the pump based on the quantity of fluctuation.

Abstract: Provided are a stator blade assembly advantageous for improving the evacuation performance by shortening the evacuation time, and an exhaust pump provided with such a stator blade assembly. Inner and outer stator blade bases of a plurality of stator blades are supported by frames. A projecting portion protruding from the frame supporting the inner stator blade base, or from the frame supporting the outer stator blade base, or from both of the frames is provided in a gap in the vicinity of the inner or outer stator blade base between one of the supported stator blades and the stator blade transversely adjacent thereto.

Abstract: A deposit detection device for an exhaust pump is provided, which can be easily put into operation without the burdens of, for example, installing equipment for flowing a gas, or adding or changing operation modes in apparatuses.

Abstract: A deposit detection device for an exhaust pump is provided, which can be easily put into operation without the burdens of, for example, installing equipment for flowing a gas, or adding or changing operation modes in apparatuses.

Abstract: A rotation shaft coupling structure includes a roller drive shaft including a recessed portion having an internal thread; a rotation roller including a coupling member housing the recessed portion of the roller drive shaft; and a coupling shaft extending through the rotation roller in the axial direction. The coupling shaft includes a threaded portion at a first end portion thereof, the threaded portion mating with the internal thread of the recessed portion, and the coupling shaft couples the roller drive shaft and the rotation roller to each other. The first end portion of the coupling shaft in the axial direction is joined to the roller drive shaft and the rotation roller in the coupling member of the rotation roller, and a second end portion of the coupling shaft in the axial direction is a free end that allows the coupling shaft to extend and contract in the axial direction.

Abstract: A developer collecting device includes a housing in which an opening disposed opposite to a developer holding member is formed, a collection member that is disposed to be capable of coming in contact with and being separated from the developer holding member and that detaches the developer and collects the detached developer in the housing, a sealing member that is disposed to be capable of coming in contact with and being separated from the developer holding member and that seals up a gap between the developer holding member and the housing, a suction passage to which a suction unit suctioning the developer into the housing is connected, a developer transport unit that transports the developer to one end of the housing, and a filtration member that is tilted so that at least an upper part thereof overlaps with the upside of the developer transport unit in a plan view.

Abstract: To provide a mechanism in which a moving body can be stored in a housing. A gate valve has a slide plate and a moving mechanism for changing the positions in the radial and axial directions of the slide plate. A shaft is a rotating shaft the axial displacement of which is controlled by an axial driving mechanism and the angle of rotation of which is controlled by a radial driving mechanism, and is turnably supported in the housing by a shaft supporting spring consisting of a magnetic bearing and a conical coil spring. By controlling the attraction force of a balance weight in an electromagnet, the shaft can be moved in the radial direction. Also, by controlling the attraction force of an electromagnet target in the electromagnet, the shaft can be moved in the axial direction.

Abstract: A drive includes a driving shaft that includes a distal end portion having a screw hole at a distal end and being inserted into a hollow portion from a first end of a driving roller in a rotation-axis direction, and that transmits a rotational driving force to the driving roller through a fit portion; a spring washer arranged at a second end of the driving roller opposite to the first end in the rotation-axis direction; and a screw rod that has an external thread which is screwed into the screw hole, that is inserted into the spring washer and inserted into the hollow portion from the second end, and that pinches the driving roller between the screw rod and the fit portion of the driving shaft in the rotation-axis direction through the spring washer when the external thread is screwed into the screw hole.

Abstract: A developer collecting device includes a housing provided with an opening opposed to a developer carrying member, a collecting member provided along an edge of the opening at a downstream end of the opening in a transporting direction in which the developer carrying member transports the developer, a sealing member provided along an edge of the opening at an upstream end of the opening in the transporting direction, a suction path that extends along a longitudinal direction of the housing and that is connected to a suction unit for sucking the developer into the housing, a developer transporting unit that is provided between the opening and the suction path and that transports the developer collected in the housing, a filter member disposed between the developer transporting unit and the suction path, and a hood member disposed between the opening and the filter member and separated from the filter member.

Abstract: A developer-conveying apparatus is provided, the developer-conveying apparatus including: a conveying member that has a rotational axis rotatably set in a container and a blade formed around the rotational axis, the conveying member conveying a developer along the rotational axis by rotation; and a static eliminating member set in the container and eliminating static electricity of the developer in the container by being brought into contact with the developer.

Abstract: Provided are a stator blade assembly advantageous for improving the evacuation performance by shortening the evacuation time, and an exhaust pump provided with such a stator blade assembly. Inner and outer stator blade bases of a plurality of stator blades are supported by frames. A projecting portion protruding from the frame supporting the inner stator blade base, or from the frame supporting the outer stator blade base, or from both of the frames is provided in a gap in the vicinity of the inner or outer stator blade base between one of the supported stator blades and the stator blade transversely adjacent thereto.

Abstract: An image forming apparatus includes a toner image forming unit that forms a toner image, a transfer unit that transfers the toner image onto a recording material, a fixing unit that fixes the toner image to the recording material, a transport unit that includes a rotary member that transports the recording material from the transfer unit to the fixing unit and a recording material guiding portion that has first protruding portions extending along a recording material transport direction, and a charge eliminating unit that is disposed between the transfer unit and transport unit and eliminates charge on the recording material. The charge eliminating unit includes a first charge eliminating portion having pointed projections, and a second charge eliminating portion that is disposed on a downstream side of the first charge eliminating portion in the recording material transport direction and is disposed to be out of contact with the recording material.

Abstract: An image forming apparatus includes a transfer member onto a front side of which an image is transferred, a rotary member around which the transfer member is wrapped, a guide member provided at an end portion of an axial direction of the rotary member, a regulating member, a first reference mark, a second reference mark, a first detector, a second detector, and a controller. The regulating member is located on a reverse side of the transfer member, and restricts skew of the transfer member by contacting the guide member. The first and second reference marks are on edge sides of the transfer member in the axial direction of the rotary member. The first and second detectors detect the first and second reference marks, respectively. The controller controls alignment of the image on the transfer member in accordance with a detection result of the first and second detectors.

Abstract: A removable unit includes an endless belt-like member; a first contact member that contacts an inner surface of the belt-like member; a second contact member disposed upwardly of the first contact member in a direction of gravitational force when the removable unit is mounted to a body of an image forming apparatus; a first cleaning member disposed between the first contact member and the second contact member; and a second cleaning member disposed between the first cleaning member and the second contact member. The first cleaning member prevents an adherent cleaned off by the second cleaning member from moving downward in the direction of gravitational force along an inner peripheral surface of the belt-like member.

Abstract: A molecular pump has a cylindrical casing, a stator portion formed in the casing, a shaft disposed in the stator portion, a bearing pivotally supporting the shaft with respect to the stator portion, a rotor that is attached to the shaft and rotates integrally with the shaft, a motor for rotationally driving the shaft, a shock absorbing member, and a flange portion provided at an end portion of the casing. The flange portion has a bolt hole through which extends a bolt for fixing the casing and a fixed member to each other and an insertion hole which is provided adjacent to the bolt hole and in which the shock absorbing member is inserted so that at least one end side of the shock absorbing member extending along an axial direction of the bolt is spaced apart from the bolt.

Abstract: To provide a deposit detection device capable of detecting with accuracy and alarming deposits deposited in an exhaust pump used for various processes regardless of kinds and flow rate of process gas, and to provide an exhaust pump equipped with the deposit detection device. A pump control device 50 of an exhaust pump P comprises a deposit detection device which executes, as initial process, steps of reading electric current value of a motor for rotating a rotor and obtaining and storing an initial electric current value of the motor based on the electric current values read; and then executes, as next process, steps of reading the electric current value of the motor, obtaining a current value of the motor based on the electric current values read, and obtaining quantity of fluctuation of the current value of the electric current value of the motor relative to the initial value of the electric current value of the motor, thereby detecting the deposit in the pump based on the quantity of fluctuation.