Abstract: A control device that controls an electronic device including a top panel having an operation surface, a position detector that detects a position of operational input performed on the operation surface, and a first vibrating element that generates vibration in the top panel, the control device includes a first processor that outputs a first drive signal to the first vibrating element to drive the first vibrating element; a first capacitor inserted in series between the first vibrating element and the first processor; and a first differential amplifier that detects a first voltage of the first capacitor or the first vibrating element, wherein the first processor is configured to determine whether pressing operation to the top panel has been performed based on the first voltage detected by the first differential amplifier.

Abstract: In an image forming apparatus, a cleaning blade, disposed on a downstream side of a transfer roller in a rotation direction of an image carrier, removes toner remaining on the image carrier after transfer of a toner image to an intermediate transfer member. After completion of an image forming operation, a controller causes the transfer roller to separate from the intermediate transfer member, cause the developing device to form on the image carrier a toner band to be supplied to the cleaning blade, and cause rotation of the image carrier to stop such that at least a part of the toner band formed on the image carrier stops within a section from a first position facing the transfer roller to a second position facing the cleaning blade in the rotation direction.

Abstract: In an image forming apparatus, a cleaning blade, disposed on a downstream side of a transfer roller in a rotation direction of an image carrier, removes toner remaining on the image carrier after transfer of a toner image to an intermediate transfer member. After completion of an image forming operation, a controller causes the transfer roller to separate from the intermediate transfer member, cause the developing device to form on the image carrier a toner band to be supplied to the cleaning blade, and cause rotation of the image carrier to stop such that at least a part of the toner band formed on the image carrier stops within a section from a first position facing the transfer roller to a second position facing the cleaning blade in the rotation direction.

Abstract: An electronic device includes: a top panel with an operation surface; a coordinate detector that detects coordinates of operational input performed on the operation surface; a vibrating element that generates vibration on the operation surface; a drive controller that drives the vibrating element with a drive signal that generates natural vibration in an ultrasonic band on the operation surface, the drive controller driving the vibrating element so that intensity of the natural vibration changes depending on a position of the operational input on the operation surface and a degree of temporal change in the position; and a reflector disposed on the operation surface side of the top panel and having a reflective surface that reflects ultrasonic waves radiated from the top panel.

Abstract: A drive control device being configured to provide a signal to an electronic device, the electronic device including a top panel having an operation surface, and a position detection circuit configured to detect a position of an operational input performed on the operation surface, and a vibrating element configured to generate vibration in the operation surface, the drive control device comprising: processor circuitry configured to execute a drive control processing that includes driving the vibrating element of the electronic device with a drive signal, the drive signal being configured to cause the vibrating element to generate natural vibration in the operation surface and being obtained by modulating a waveform signal of a first frequency in an ultrasonic band with a modulation signal of a second frequency having a difference from the first frequency, the difference being able to be sensed by a tactile receptor of a human.

Abstract: An electronic device includes: a top panel having an operation surface; a position detection circuit configured to detect a position of an operational input performed on the operation surface; a vibrating element mounted to the top panel and configured to generate vibration in the operation surface; and a drive control circuit configured to drive the vibrating element by a drive signal for generating natural vibration in an ultrasonic band in the operation surface, and configured to drive the vibrating element such that intensity of the natural vibration changes according to the position of the operational input on the operation surface and a degree of temporal change of the position.

Abstract: An electronic device includes: a top panel with an operation surface; a coordinate detector that detects coordinates of operational input performed on the operation surface; a vibrating element that generates vibration on the operation surface; a drive controller that drives the vibrating element with a drive signal that generates natural vibration in an ultrasonic band on the operation surface, the drive controller driving the vibrating element so that intensity of the natural vibration changes depending on a position of the operational input on the operation surface and a degree of temporal change in the position; and a reflector disposed on the operation surface side of the top panel and having a reflective surface that reflects ultrasonic waves radiated from the top panel.

Abstract: An electronic device includes a top panel configured to have an operation surface; a detection circuit configured to detect a position of an operation input on the operation surface; a vibrating circuit configured to be attached to the top panel to generate vibration on the operation surface; a control circuit configured to drive the vibrating circuit by a driving signal for generating natural vibration of an ultrasonic wave band on the operation surface, in which the driving of the vibrating circuit is performed such that an intensity of the natural vibration changes in accordance with the position of the operation input to the operation surface and a temporal change degree of the position; and a damping member configured to abut against a position that corresponds to a node of a standing wave generated by the natural vibration on a surface opposite to the operation surface of the top panel.

Abstract: A drive controller includes a pulse generator configured to generate a pulse width modulation signal by modifying a period of at least one cycle of a plurality of cycles of the pulse width modulation signal for synchronizing the plurality of cycles of the pulse width modulation signal with one cycle of a drive signal, and a drive circuit configured to generate the drive signal based on the pulse width modulation signal generated by the pulse generator, and drive a vibration element coupled to a panel of an electronic device on a basis of the generated drive signal for generating vibration in an ultrasonic band on the panel.

Abstract: A toner includes toner particle containing at least a strontium titanate particle on the surface of the toner particle, and the toner is a water-washed toner from which strontium titanate particle desorbable by water washing are removed by water washing. The water-washed toner contains the strontium titanate particle having a number average particle diameter of primary particle (D1) of 10 nm or more and 150 nm or less, and when the distribution of an Sr element in the water-washed toner in the depth direction is determined, (i) the Sr element abundance on the outermost surface x satisfying 0.00<x?0.80, and (ii) the difference between x and xp “xp?x” satisfying 0.00<xp?x?0.95, where xp is the maximum peak value (atomic %) of the Sr element abundance in the region from the outermost surface to 50 nm.

Abstract: An image forming apparatus in which occurrence of an image failure in association with contamination caused by an external additive, such as silica, adhering to a charging unit is suppressed. The image forming apparatus is configured to charge an image bearing member through use of the charging unit, and uses toner having, on a surface thereof, strontium titanate particles and silica particles having predetermined physical properties.

Abstract: An electronic device includes: a top panel having an operation surface; a position detection circuit configured to detect a position of an operational input performed on the operation surface; a vibrating element mounted to the top panel and configured to generate vibration in the operation surface; and a drive control circuit configured to drive the vibrating element by a drive signal for generating natural vibration in an ultrasonic band in the operation surface, and configured to drive the vibrating element such that intensity of the natural vibration changes according to the position of the operational input on the operation surface and a degree of temporal change of the position.

Abstract: An information processing device includes: a memory; and a processor coupled to the memory and configured to: drive a vibrating element of an electronic device, which includes a top panel that has an operation surface, a position detection circuit that detects a position of an operational input performed on the operation surface, and the vibrating element that generates vibration on the operation surface, with a first drive signal that generates a first natural vibration in an ultrasonic band on the operation surface when the operational input is performed on the operation surface; and drive the vibrating element with a second drive signal that generates vibration in a frequency band perceivable by a human sensory organ on the operation surface when the vibrating element is driven for a predetermined time.

Abstract: A control device that controls an electronic device including a top panel having an operation surface, a position detector that detects a position of operational input performed on the operation surface, and a first vibrating element that generates vibration in the top panel, the control device includes a first processor that outputs a first drive signal to the first vibrating element to drive the first vibrating element; a first capacitor inserted in series between the first vibrating element and the first processor; and a first differential amplifier that detects a first voltage of the first capacitor or the first vibrating element, wherein the first processor is configured to determine whether pressing operation to the top panel has been performed based on the first voltage detected by the first differential amplifier.

Abstract: A drive control device being configured to provide a signal to an electronic device, the electronic device including a top panel having an operation surface, and a position detection circuit configured to detect a position of an operational input performed on the operation surface, and a vibrating element configured to generate vibration in the operation surface, the drive control device comprising: processor circuitry configured to execute a drive control processing that includes driving the vibrating element of the electronic device with a drive signal, the drive signal being configured to cause the vibrating element to generate natural vibration in the operation surface and being obtained by modulating a waveform signal of a first frequency in an ultrasonic band with a modulation signal of a second frequency having a difference from the first frequency, the difference being able to be sensed by a tactile receptor of a human.

Abstract: A drive controller includes a pulse generator configured to generate a pulse width modulation signal by modifying a period of at least one cycle of a plurality of cycles of the pulse width modulation signal for synchronizing the plurality of cycles of the pulse width modulation signal with one cycle of a drive signal, and a drive circuit configured to generate the drive signal based on the pulse width modulation signal generated by the pulse generator, and drive a vibration element coupled to a panel of an electronic device on a basis of the generated drive signal for generating vibration in an ultrasonic band on the panel.

Abstract: An electronic device includes: a top panel having a manipulation surface; a position detector configured to detect a position of a manipulation input performed on the manipulation surface; a vibrating element; and a drive controlling part configured to drive the vibrating element for generating a natural vibration in an ultrasound frequency band at the manipulation surface such that an intensity of the natural vibration is changed in accordance with the position of the manipulation input performed on the manipulation surface and a time change degree of the position, wherein a width of the vibrating element in a direction in which an amplitude of the natural vibration changes is set based on a ratio between a flexural rigidity of the top panel and a flexural rigidity of the top panel and the vibrating element at a portion where the vibrating element is attached to the top panel.

Abstract: A charging roller is configured to charge a surface of an image bearing member configured to bear an image. The charging roller includes: a shaft portion; an elastic layer formed around the shaft portion; and a surface layer formed around the elastic layer, wherein particles having particle diameters within a range of 2 ?m or larger and 15 ?m or smaller and dispersed in the surface layer, and wherein a reduced peak height Spk (?m), a reduced dale height Svk (?m), and a core height Sk (?m) with respected to the surface layer of the charging roller satisfy 4?Spk+Sk?8 and 0.5?Svk?1.

Abstract: A toner includes toner particle containing at least a strontium titanate particle on the surface of the toner particle, and the toner is a water-washed toner from which strontium titanate particle desorbable by water washing are removed by water washing. The water-washed toner contains the strontium titanate particle having a number average particle diameter of primary particle (D1) of 10 nm or more and 150 nm or less, and when the distribution of an Sr element in the water-washed toner in the depth direction is determined, (i) the Sr element abundance on the outermost surface x satisfying 0.00<x?0.80, and (ii) the difference between x and xp “xp?x” satisfying 0.00<xp?x?0.95, where xp is the maximum peak value (atomic %) of the Sr element abundance in the region from the outermost surface to 50 nm.

Abstract: An image forming apparatus in which occurrence of an image failure in association with contamination caused by an external additive, such as silica, adhering to a charging unit is suppressed. The image forming apparatus is configured to charge an image bearing member through use of the charging unit, and uses toner having, on a surface thereof, strontium titanate particles and silica particles having predetermined physical properties.