Abstract: An image forming apparatus includes a movable photosensitive member, a toner image forming portion, a movable intermediary transfer member, an image transfer portion, a cleaning blade, a job executing portion, a toner supply executing portion capable of executing a supplying operation for supplying the toner to a contact portion in a non-image-forming period, a storing portion configured to store a first integrated value obtained by integrating a value corresponding to a distance of movement of the intermediary transfer member and a second integrated value obtained by integrating a number of images formed in the job, and a controller configured to cause the toner supply executing portion to execute the supplying operation and configured to set the first and second integrated values at initial values when the first integrated value reaches a first threshold or when the second integrated value reaches a second threshold, during execution of the job.
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: A device according to one disclosed embodiment comprises: a control part which determines at least one target frequency of an MRI noise signal generated in an MRI device and generates a control signal for the determined target frequency; and an output part which outputs the control signal, wherein the target frequency is the frequency of the MRI noise signal to be controlled and the control signal is a signal in which at least one of the size and the phase of the MRI noise signal is changed.
September 22, 2015
Date of Patent:
July 23, 2019
SAMSUNG ELECRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Gun-woo Lee, Nokhaeng Lee, Sang-chul Ko, Youngjin Park
Abstract: A fixing device includes an elastic fixing roller, an endless belt, a pressing roller and a stretching part. The endless fixing belt is wound around the fixing roller with play. The pressing roller presses the fixing roller via the fixing belt to deform the fixing roller and forms a pressing area between the pressing roller and the fixing belt. A sheet passes through the pressing area. The stretching part is configured to pull the fixing belt in a direction opposite to the pressing roller and to stretch the fixing belt when a conveyance speed of the sheet conveyed to the pressing area is slower than a reference conveyance speed. The stretching part is configured to restrain deformation of the fixing roller to the pressing roller and to shorten length of the pressing area along a conveyance direction of the sheet.
Abstract: A radio frequency (RF) surface coil and a magnetic resonance device employing the same are disclosed. The disclosed RF surface coil for the magnetic resonance device comprises: a plurality of conductor elements connected in series so as to form a loop-shaped surface coil; and a variable inductance unit provided in at least one of the plurality of conductor elements so as to adjust inductance, wherein the variable inductance unit comprises a conductor bar and a coupler for attachably/detachably coupling the conductor bar to/from at least one of the plurality of conductor elements.
Abstract: Systems and methods for locating a subsurface liquid can include an excitation coil configured to induce a magnetic resonance in a subsurface liquid, an array of magnetometers associated with the excitation coil configured to detect a magnetic vector of the magnetic resonance excited subsurface liquid, and a controller in communication with the array of magnetometers and configured to locate the subsurface liquid based on magnetic signals output from the array of magnetometers.
Abstract: An image formation apparatus includes: a light source configured to emit laser light; a polygon mirror configured to reflect the laser light; a photoreceptor configured to be exposed to the laser light reflected by the polygon mirror; a motor configured to rotate the polygon mirror; and a controller configured to sense a type of a sheet transported through the image formation apparatus. The image formation apparatus includes as operation modes a first mode in which no sheet type is sensed and a second mode in which a sheet type is sensed. The controller performs different processes for control regarding rotation of the motor in the first and second modes, respectively.
Abstract: The invention discloses a process cartridge detachably installed in an imaging device with a driving head along an installation direction, the process cartridge including: a housing, a driving force receiving member capable of receiving a rotation driving force of the driving head, a rotatable component rotatably supported by the housing and capable of receiving a force of the driving force receiving member to rotate, and a force receiving part arranged on the housing. When the process cartridge is installed in the imaging device and the driving force receiving member generates interference with the driving head in the installation direction, the driving force receiving member is movable and engageable with the driving head as the driving head rotates. The technical problem that the driving force receiving member in the process cartridge cannot be normally disengaged from the driving head in the imaging device in the prior art is solved.
Abstract: An image forming apparatus (1) includes an image bearing member (50), a charging section (51), a developing section (52), and a cleaning member (81). The image bearing member (50) contains filler particles (87). The charging section (51) is either in contact with or positioned close to the image bearing member (50) and is configured to electrically charge the image bearing member (50) by generating a proximity discharge between the charging section (51) and the image bearing member (50). The developing section (52) supplies toner to the circumferential surface of the charged image bearing member (50). The cleaning member (81) has a degree of hardness equal to or higher than 65° and a degree of impact resilience equal to or lower than 30%. The cleaning member (81) is brought into pressure contact with the circumferential surface of the image bearing member (50) being rotated, by applying linear pressure equal to or higher than 15 gf/cm.
Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes control circuitry. The control circuitry executes, by a single protocol, acquisition of a distribution of a T1 relaxation time with a first slice as a target, and acquisition of a different kind from the distribution of the T1 relaxation time with a second slice as a target which neither overlaps nor crosses a region of interest of the first slice.
Abstract: The invention provides for a magnetic resonance imaging system (100, 300, 100) for acquiring magnetic resonance data (110, 1104) from a subject (118) within an imaging zone (108). The magnetic resonance imaging system comprises a memory (136) for storing machine executable instructions (160, 162, 164, 166, 316) and pulse sequence data (140, 1102). The pulse sequence data comprises instructions for controlling the magnetic resonance imaging system to acquire magnetic resonance data according to a magnetic resonance imaging method. The magnetic resonance imaging system further comprises a processor (130) for controlling the magnetic resonance imaging system.
January 21, 2016
Date of Patent:
June 25, 2019
Koninklijke Philips N.V.
Ulrich Katscher, Jan Jakob Meineke, Holger Eggers, Peter Boernert
Abstract: A controller of an image forming apparatus calculates a density difference between a measurement result of a toner image having the highest density formed on a photosensitive drum, which is obtained by an image density sensor, and the highest density of a density target. When the density difference falls within a predetermined range, the controller generates a tone correction table based on a density value of a first toner image formed with a plurality of densities including the highest density, and sets, based on the density difference, an exposure amount of laser light to be applied to the photosensitive drum by an exposure device. When the density difference falls out of the predetermined range, the controller generates the tone correction table based on a density value of a second toner image having a larger number of tone levels than that of the first toner image.
Abstract: Systems and methods for magnetic resonance fingerprinting (“MRF”) using highly differentiated trajectories that optimize differentiation between magnetic resonance signal patterns as a function of relaxation time(s) and static magnetic field homogeneity are described. Using the optimized acquisition parameters, MRF can be performed in the presence of inhomogeneous magnetic fields. Flip angle homogeneity can also be incorporated into the dictionary matching process to simultaneously estimate quantitative parameters of the subject and radio frequency coil transmission homogeneity profiles.
July 26, 2017
Date of Patent:
June 11, 2019
The General Hospital Corporation
Mathieu Sarracanie, Matthew Rosen, Ouri Cohen, Lionel Broche
Abstract: In a radio frequency (RF) coil for a magnetic resonance imaging (MRI) system, the RF coil includes loops that are radially arranged. At least some areas of each of the loops overlap each other at a central portion of a radial structure formed by the loops.
Abstract: According to one embodiment, there is provided an image forming apparatus including an image forming unit and a controller. The image forming unit is able to execute a first image formation processing using a first color material and a second image formation processing using a second color material. The controller performs image quality stabilizing processing for the first image formation processing using second color material.
Abstract: A developing device includes a casing to contain developer and define a developer circulation passage, a developing roller to bear the developer, and at least one developer conveyor to convey the developer. The developer conveyor is disposed in the developer circulation passage and lower than the developing roller. The developing device satisfies M1/L2>0.56 g/cm and M1/M2>0.50, where M1 represents an amount of developer borne on the developing roller, L1 represents a width in which the developing roller bears the developer in a longitudinal direction of the developing roller; and M2 represents an amount of developer stored in the casing and excluding the amount of developer borne.
Abstract: There is provided a scan condition determining apparatus, comprising: setting means for setting values of a plurality of parameters different from a repetition time and different from a bandwidth; and determining means for determining a specific value of the bandwidth based on the set values of the plurality of parameters such that a repetition time determined as a longer one of a first period of time and a second period of time is minimized, the first period of time being a time taken to perform a pulse sequence in one cycle, and the second period of time being a time taken from the start of a pulse sequence in one cycle until a pulse sequence in a next cycle is ready to perform determined by the thermal design restrictions of a gradient coil.
Abstract: An image forming apparatus using a contact charging method includes a control unit capable of executing cleaning in a post-rotation step at the end of a job and in an inter-image step during execution of the job. The cleaning involves moving toner adhering to a charging member from the charging member to an image bearing member. The job is a series of operations started by a predetermined start instruction and involving forming an image on one or more recording materials and outputting the one or more recording materials. When an instruction to start the next job is input during execution of cleaning in the post-rotation step, the control unit stops the cleaning in the middle of the execution, starts the next job, and adjusts timing for executing subsequent cleaning on the basis of information. relating to the amount of cleaning executed before being stopped in the middle of the execution.
Abstract: An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.
Abstract: A motion monitoring system for healthcare surveillance with visual and audio alerts is provided to monitor patients and actively mitigate the damages due to patient movement. The system documents each event involving patient movement and the surrounding area in various medical setting. The system also has the ability for a specific monitoring of a single location and upon a motion detected, the system outputs an alert signal to trigger external devices, including but not limited to lights and sirens, to notify the healthcare device operator.