Abstract: A developing device includes a storage container that stores a developer, a developer carrier that holds a developer and rotates to develop an image held on an image carrier, a transporting member that transports a developer, an outlet flow path that allows air inside the storage container to be discharged therethrough, and a partition disposed between an air inlet of the outlet flow path and the developer carrier, the partition having an end located at a level of or below a lower end of the developer carrier in a direction of gravity and above an upper end of the transporting member in the direction of gravity.
Abstract: A cleaning device detachable from an image forming apparatus, the cleaning device including a frame that includes a waste toner containing unit that contains toner removed with a cleaning member, a vent hole that communicates an inside and an outside of the waste toner containing unit and that is covered with a filter, and a partitioning portion that protrudes inside the waste toner containing unit. In a state in which the cleaning device in mounted in the image forming apparatus, there is a contact position where the image bearing member and the cleaning member come in contact with each other, and the partitioning portion is positioned between the vent hole and the contact position in a vertical direction.
Abstract: An image forming apparatus includes a fixing unit having a heating member, a temperature detection member detecting a temperature of the heating member, a control unit controlling power to be supplied to a heater, and an acquisition unit that acquires toner density information of the toner image to be formed on the recording material, wherein the acquisition unit acquires first toner density information in a predetermined area which is a portion of a maximum image formation area of the recording material and second toner density information in the maximum image formation area, and the predetermined area is an area including an area of the recording material corresponding to a detected area of the heating member detected by the temperature detection member, wherein the control unit sets the target temperature based on the first toner density information and the second toner density information.
Abstract: Example apparatus and methods concern determining whether a target material appears in a region experiencing nuclear magnetic resonance (NMR). One method acquires a baseline value for a magnetic resonance parameter (MRP) while the region is not exposed to a molecular imaging agent that affects the MRP and acquires a series of quantitative values for the MRP while the sample is influenced by a molecular imaging agent. Quantitative values may be acquired during a clinically relevant time period (e.g., 60 minutes) during which the change in the MRP (e.g., T1) caused by the molecular imaging agent is at least 90% of the peak change caused by the molecular imaging agent. The molecular imaging agent may be SBK2 and may produce a desired change in T1 for at least thirty minutes in glioblastoma.
May 31, 2016
Date of Patent:
September 18, 2018
CASE WESTERN RESERVE UNIVERSITY
Susann Brady-Kalnay, Vikas Gulani, Mark Griswold
Abstract: A fixing device according to an embodiment includes a first rotator, a belt, and a second rotator. The belt forms a nip by abutting onto a surface of the first rotator. The second rotator is disposed to abut onto an inner circumferential surface of the belt. The second rotator presses the belt against the first rotator such that the dynamic frictional force between the inner circumferential surface of the belt and the second rotator becomes equal to or smaller than 0.98 N.
Abstract: An image forming apparatus includes a photoconductor, a charger, an exposure device, a transfer device, a first and a second surface voltmeter, and a processor. At the first rotation of the photoconductor, the charger charges a charge area on the photoconductor, the exposure device exposes a part of an exposure area in an axial direction of the photoconductor, and the transfer device charges an exposed and unexposed area. At the second rotation, the charger charges the charge area, and the exposure device exposes the exposed and unexposed area at the first rotation. After the exposure at the second rotation, the first surface voltmeter measures a surface potential V1 of the unexposed area at the first rotation, and the second surface voltmeter measures a surface potential V2 of the exposed area at the first rotation. The processor evaluates a life of the photoconductor based on the surface potentials V1 and V2.
November 7, 2017
Date of Patent:
August 28, 2018
Ricoh Company, Ltd.
Daisuke Nii, Noriyasu Saito, Kazuhiro Egawa
Abstract: In order to achieve at least one of the above-described objects, an image forming apparatus reflecting an aspect of the present invention includes: an image carrier configured to carry and transport a latent image; a charging member configured to be rotatable and disposed in contact with a surface of the image carrier; an acquisition device configured to acquire an electrical characteristic of the charging member; and a processor configured to calculate a range of fluctuation of the electrical characteristic associated with rotation of the charging member.
Abstract: A toner case includes a case main body, a rotator, a transmitter and a turner. The rotator is stored in the case main body and rotates around a rotation axis. The transmitter transmits rotation to the rotator. A part of the transmitter is exposed to an outside of the case main body. The turner is provided at an outside of the case main body in a rotation axis direction. The turner is turnable between a first posture and a second posture. At least a part of the turner is moved to an outside in the rotation axis direction as the turner turns from the first posture to the second posture. The transmitter moves from a first position to a second position which is arranged at an outside of the first position in the rotation axis direction as the turner turns from the first posture to the second posture.
Abstract: An image forming apparatus includes an image carrier, a transfer member, a measurement instrument, and a controller. The controller is configured to predict a lifetime of the transfer member based on first and second electrical states. The first electrical state is an electrical state of the transfer member when a first image carrier is attached as the image carrier. The second electrical state is an electrical state of the transfer member when a second image carrier different from the first image carrier is attached as the image carrier after formation of an image with the use of the first image carrier.
Abstract: Systems and methods for improving patient comfort and throughput of magnetic resonance imaging by providing at least one patient imaging area outside a bore of a magnet of a magnetic resonance imaging device. An embodiment of an apparatus for providing at least one patient imaging area outside the bore comprises a first shim disposed external to and spaced apart from a first opening of the bore to form a first patient imaging area between the first shim and the first opening, wherein the first shim is configured to direct a magnetic field of the magnet into the first patient imaging area to provide a first magnetic field in the first patient imaging area. Methods of magnetic resonance imaging outside the bore are also disclosed.
Abstract: An NMR (nuclear magnetic resonance) probe head has a microwave resonator with at least two elements which are reflective in the microwave range, at least one of which is focusing. The reflective elements at least partly delimit a resonance volume of the microwave resonator. At least one of the reflective elements is a DBR (“Distributed Bragg Reflector”), and the NMR probe head has at least one NMR coil integrated into the DBR. The NMR detection coil can thereby be positioned particularly near to the sample and the distortions of the static field by resonator components are reduced, such that the detection sensitivity and the spectral resolution of the experiment are significantly improved.
Abstract: A development device includes a developer bearing member and a magnet which is fixed inside of the developer bearing member. The magnet includes a first magnetic pole for developing a latent image, a second magnetic pole adjacent to the first magnetic pole and being an opposite pole to the first magnetic pole, and a third magnetic pole adjacent to both the first and second magnetic poles and having an opposite pole to the first magnetic pole. A developer regulation portion is disposed such that when a maximum peak amount of a magnetic flux density of the first magnetic pole in a normal direction of the developer bearing member is defined as positive, the magnetic flux density of the first magnetic pole becomes positive in an entire region from a downstream side of the regulating member in a rotary direction of the developer bearing member and through a developing area.
Abstract: A fixing device includes an endless belt, a girder disposed inside of a loop of the endless belt and extending in the width direction, a plate disposed between the girder and the endless belt, a pressing member disposed outside of the loop of the endless belt, a heater disposed inside the loop pf the endless belt, a first support disposed between the plate and the girder, and a second support disposed between the plate and the girder while being away from the first support. The first height of the second support is greater than the second height of the second support. A first difference between the first height of the first support and the second height of the first support is less than a second difference between the first height of the second support and the second height of the second support.
Abstract: An image forming apparatus includes: a supporting member supporting multiple cartridges and movable between an inside position inside an apparatus main body and an outside position, in which the cartridges are supported arrayed in a direction of extracting the supporting member from the inside position to the outside position, with the multiple cartridges being detachably attachable at the outside position; a first cartridge; a second cartridge adjacent to the first cartridge; and a third cartridge adjacent to the second cartridge. The first cartridge has a greater protrusion amount from the supporting member compared to the second cartridge and the third cartridge, in a direction orthogonal to the extracting direction and to a longitudinal direction of the cartridges. When viewed from the orthogonal direction, the amount of overlapping between the first cartridge and the second cartridge is greater than the amount of overlapping between the second cartridge and the third cartridge.
Abstract: A relationship 150?Rs (?)/Rm (?)?4000 is established in an environment of a temperature of 15° C. and a humidity of 10% in a case where a surface resistance of a transfer roller is Rs (?) when a current is fed between a pair of electrodes facing each other in an axial direction of the transfer roller and arranged on a surface of the transfer roller with an interval of 5 mm therebetween, the electrodes having a width of 20 mm in a circumferential direction of the transfer roller in a state of being arranged on the transfer roller, and in a case where a combined resistance of a first layer and a second layer is Rm (?) when the current is fed from a core portion to an outer peripheral surface of the second layer.
Abstract: An image forming apparatus includes a mounting unit configured to mount a cartridge including a developing member by moving the cartridge in the insertion direction, and a pressing member having a first pressing portion configured to press the cartridge mounted on the mounting unit to separate the developing member from a photosensitive member. The pressing member has a second pressing portion configured to press the cartridge mounted on the mounting unit to bring the developing member into contact with the photosensitive member, and the first pressing portion and the second pressing portion integrally moves with the movement of the pressing member. The image forming apparatus also includes an elastic member configured to press the pressing member so that the second pressing portion presses the cartridge.
Abstract: A shutting assembly for a magnetic resonance imaging device (MRD) bore aperture, comprising at least one first movable portion and at least one second portion affixed to the MRD, wherein the shutting assembly further comprising a normally closed or normally open sliding mechanism. The sliding mechanism couples at least one first moveable portion to at least one second portion affixed to the MRD, thereby enabling a reciprocal movement of at least one first moveable portion parallel to the MRD bore aperture in an upwards and downwards directions in respect to at least one second portion affixed to the MRD.
Abstract: An exposure device includes: a substrate that includes a plate-shaped main body that extends in one direction, a plurality of light emitting elements that are mounted on one surface of the main body, and a heating element that is mounted on the other surface of the main body generates heat in accordance with a light emitting operation of the light emitting elements; a housing that includes resin and that extends in the one direction, has a frame shape in which a through hole is formed, and to an inside of the through hole of which the substrate is fixed so that a thickness direction of the substrate is a penetrating direction of the through hole; and a suppression member that extends in the one direction, is fitted in the through hole, and suppresses thermal deformation of the housing.
Abstract: A feeding circuit arrangement (18) supplies a radio frequency signal to a plurality of coil elements (14) of a magnetic resonance coil system (12). The circuit arrangement (18) includes a main line (20) for connecting a radio frequency signal source (16); a plurality of feeding lines (22), each feeding line (22) for connecting a corresponding coil element (14) of the coil system (14); a power divider (24) arranged between the main line (20) and the plurality of feeding lines (22) for distributing the signal on the main line (20) to each of the feeding lines (22). At least one of the feeding lines (22) includes a controllable switching circuit (26) with a switching element (28) for connecting/disconnecting of two resulting line sections (30, 32) of the feeding line (22), a first line section (30) on the divider side and a second line section (32) on the side connectable to the coil element (14).
Abstract: An intermediate transfer belt, configured to receive a toner image formed by developing a latent image formed on an image bearing member with a toner, includes a base layer and an elastic layer. The elastic layer has an irregular surface formed with spherical particles, and the spherical particles include flexible particles having 0.1 MPa to 30 MPa of compressive strength and 15% to 50% of restoring ratio at the time of 10% deformation. Image forming apparatus. Image forming method.