Abstract: A fixing device includes: a plurality of heating portions that heats an upper belt and a lower belt; a first temperature sensor disposed outside the upper belt, and configured to detect a temperature of the upper belt in a non-contact manner in a region where the upper belt ascends from an outlet of a nip portion; and a second temperature sensor configured to detect a temperature in a non-contact manner in a region other than the nip portion downstream of the first temperature sensor in a conveyance direction of the upper belt, in which an error is reported when a difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is equal to or more than a predetermined value.

Abstract: An inkjet recording apparatus includes an image forming unit, a first belt, a second belt, a plurality of heating elements disposed on an inner peripheral side of the first belt along a sheet conveyance direction, and configured to heat the first belt, a power supply circuit, a temperature detection unit, and a control unit configured to individually control power to be supplied to the plurality of heating elements to cause the temperature of the first belt detected by the temperature detection unit to be adjusted to a predetermined target temperature, wherein, in a case where the power is supplied to the plurality of heating elements, the control unit controls a number of heating elements to which the power is to be supplied, to cause a duty of one heating element to exceed a first duty and to be less than a second duty greater than the first duty.

Abstract: A sheet conveyance apparatus configured to convey a sheet includes a casing, a belt unit, an accommodating unit, a moving unit, and a rotary member. The accommodating unit and the belt unit move to a first state, a second state, and a third state. In the first state, the accommodating unit is positioned at a closed position and the belt unit is positioned at a first position to convey the sheet by a conveyance belt. In the second state, the accommodating unit is positioned at an opening position and the belt unit is positioned at the first position to open a sheet conveyance path. In the third state, the accommodating unit is positioned at the opening position and the belt unit is positioned at a second position to allow the conveyance belt to attach to and detach from the belt unit.

Abstract: A sheet conveyance apparatus configured to convey a sheet includes a casing, a belt unit, an accommodating unit, a moving unit, and a rotary member. The accommodating unit and the belt unit move to a first state, a second state, and a third state. In the first state, the accommodating unit is positioned at a closed position and the belt unit is positioned at a first position to convey the sheet by a conveyance belt. In the second state, the accommodating unit is positioned at an opening position and the belt unit is positioned at the first position to open a sheet conveyance path. In the third state, the accommodating unit is positioned at the opening position and the belt unit is positioned at a second position to allow the conveyance belt to attach to and detach from the belt unit.

Abstract: A heater is disposed inside the belt in such a manner as not to be in contact with the belt and heats the belt by emitting an electromagnetic wave. A reflecting member reflects the electromagnetic wave emitted by the heater toward a region of the belt. The heater is disposed inside the reflecting member. A temperature detection unit is disposed outside the reflecting member and detects a temperature of the region. A fan generates an airflow. A flow path forming portion is provided inside the belt and forms a flow path through which the airflow generated from the fan flows. The temperature detection unit is disposed inside the flow path forming portion.

Abstract: An ink jet recording apparatus includes a fixing portion including a first belt, a second belt, and a heating portion, a cooling portion disposed downstream of the fixing portion in a conveying direction of the recording material and including a cooling fan, a partition wall separating a first chamber in which the fixing portion is disposed and a second chamber in which the cooling portion is disposed from each other, and including a communication port, a guide portion, a blowing fan disposed above the guide portion in the first chamber, and an exhaust fan configured to exhaust the air blown from the blowing fan via the communication port to the second chamber, the exhaust fan being disposed upstream of the cooling portion in the conveying direction of the recording material in the second chamber.

Abstract: A sheet conveyance apparatus includes a first belt unit including a first belt, a second belt unit including a second belt that forms a nip portion for nipping and conveying a sheet with the first belt. The second belt unit includes at least one nip portion forming member forming the nip portion between the first belt and the second belt by abutting on an inner peripheral surface of the second belt and supporting the second belt, at least three supporting members disposed along a conveyance direction of the sheet in the nip portion, the at least three supporting members being in contact with surfaces of the nip portion forming member on a side opposite to the second belt at different positions in a width direction to support the nip portion forming member, and at least one connecting member connecting the at least three supporting members.

Abstract: An image forming apparatus includes a conveyance portion, first, second and third blowing units. The conveyance portion conveys a sheet on which an image is formed by ejecting ink. The first blowing unit blows air onto the sheet conveyed by the conveyance portion. The second blowing unit includes a heater and blows air heated by the heater onto the sheet conveyed by the conveyance portion. The third blowing unit is disposed between the first blowing unit and the second blowing unit with respect to a sheet conveyance direction. The third blowing unit includes a suction portion sucking a part of the air of the conveyance portion, a duct portion through which the air sucked by the suction portion flows and a blowing portion blows the air flowing through the duct portion onto the sheet.

Abstract: A drying device drying a sheet with an ink image includes a belt with through holes penetrating through inner and outer sides thereof, a blowing unit and a suction unit. The blowing unit upward of the belt includes a blowing duct including a blowout opening blowing out the air toward the sheet and a blowing fan blowing toward the blowout opening in the blowing duct. The suction unit downward of the belt includes a first exhaust duct including a first exhaust opening sucking the air from the inner side through the through holes and a suction fan blowing toward the first exhaust opening inside the first exhaust duct. The second exhaust duct is connected to the first exhaust opening and provided with a second exhaust opening exhausting the air to the inside of a casing. The second exhaust opening is disposed to exhaust upward at a position above the belt.

Abstract: An inkjet recording apparatus includes a drying device for drying a sheet by blowing air. The drying device includes a first duct with a suction opening for sucking air outside, a second duct with a blowing hole through which the air sucked from the suction opening is blown toward the sheet, a heater for heating air inside of the second duct; and a first fan for sending the air from the suction opening to the blowing hole. The suction opening is provided on a front side of the inkjet recording apparatus with respect to the second duct. The first duct forms a first flow passage of air flowing on the front side with respect to the second duct, and a second flow passage of air flowing downstream of the first flow passage in a flowing direction from the suction opening to the blowing hole and above the second duct.

Abstract: A drying device for blowing air on a sheet on which an image is formed by discharging ink and for drying the sheet includes a conveyance belt, first and second blowing units. The first blowing unit includes a plurality of first blowout holes, and the second blowing unit disposed adjacent to downstream of the first blowing unit in a sheet conveyance direction includes a plurality of second blowout holes. When a pitch between of the plurality of the first blowout holes, a first hole and a second hole downstream of the first hole and closest to the first hole in the sheet conveyance direction is a first pitch, a second pitch between a downstreammost hole of the plurality of the first blowout holes and an upstreammost hole of the plurality of the second blowout holes in the sheet conveyance direction is not more than the first pitch.

Abstract: A sheet conveyance apparatus configured to convey a sheet includes a casing, a belt unit, an accommodating unit, a moving unit, and a rotary member. The accommodating unit and the belt unit move to a first state, a second state, and a third state. In the first state, the accommodating unit is positioned at a closed position and the belt unit is positioned at a first position to convey the sheet by a conveyance belt. In the second state, the accommodating unit is positioned at an opening position and the belt unit is positioned at the first position to open a sheet conveyance path. In the third state, the accommodating unit is positioned at the opening position and the belt unit is positioned at a second position to allow the conveyance belt to attach to and detach from the belt unit.

Abstract: A drying device includes a sheet conveyance portion, a warm air blowing portion disposed above and opposite to the sheet conveyance portion and to blow a warm air from a nozzle on the sheet. A first casing accommodates the warm air blowing portion and a second casing accommodates the sheet conveyance portion. The first casing is movable to a closed position opposite to the sheet conveyance portion and an open position for opening the sheet conveyance portion. The first casing positioned in the closed position moves to the open position by being moved upward to the second casing in a vertical direction, and the warm air blowing portion is movable to the first casing in the vertical direction in a state in which the first casing is positioned in the open position.

Abstract: A drying device for drying a sheet on which an image is formed by discharged ink includes a conveyance portion, a fan; a duct guiding an air blown from the fan to the conveyed sheet and a heater heating the air in the duct. The duct includes a plurality of nozzles blowing the air in the duct to the conveyed sheet, a first surface provided with the plurality of nozzles; a second surface opposing the first surface; and a recess portion formed along a conveyance direction of the sheet. In a widthwise direction, the recess portion is provided between a first nozzle and a second nozzle, of the plurality of nozzles, and the second nozzle is disposed side by side with the first nozzle.

Abstract: A contact member comes into contact with a back surface of a recording material between a nip portion and a transfer portion in a conveyance direction of the recording material. The contact member is capable of being located at a first position, a second position, and a third position. A detection unit detects a position of the contact member so that the detection unit can detect the first position, the second position, and the third position. The contact member reaches the third position by being biased by the recording material from the second position.

Abstract: Provided is a rubber composition for tires that can achieve both tire gripping performance and production operability at a high level. A rubber composition for tires comprises: a rubber component; and a softener, wherein the rubber component contains at least one selected from styrene-butadiene rubber and butadiene rubber, the softener contains a hydrogenated resin having a softening point of more than 110° C. and a polystyrene-equivalent weight-average molecular weight of 200 g/mol to 1600 g/mol, and a terpene-based resin, and the hydrogenated resin and the terpene-based resin satisfy the formula: a mass ratio of the hydrogenated resin/the terpene-based resin?1.4/1.

Abstract: A control device includes an inverter circuit having a plurality of switching elements forming three upper and lower arms corresponding one-to-one to the phases of a three-phase motor. The control device includes a shunt resistor, a control circuit that outputs a PWM drive signal to the inverter circuit, and an amplifier circuit. During a regular control, a motor control section changes a pulse signal that controls switching of the switching element. The motor control section sets the switching element included in the arm located on a potential line side to which the shunt resistor is connected to a state in which current does not flow by changing the pulse signal. In this state, the current value acquisition section acquires the offset voltage converted by the shunt resistor.

Abstract: A contact member comes into contact with a back surface of a recording material between a nip portion and a transfer portion in a conveyance direction of the recording material. The contact member is capable of being located at a first position, a second position, and a third position. A detection unit detects a position of the contact member so that the detection unit can detect the first position, the second position, and the third position. The contact member reaches the third position by being biased by the recording material from the second position.

Abstract: An image forming apparatus includes a belt rotating member forming, with the rotating member, a nip portion for fixing a toner image to the recording medium, first and second rollers rotatably supporting the belt rotating member, a stepping motor tilting the first roller, an output unit outputting an amount-of-rotation signal instructing an amount of rotation of a rotor in the stepping motor, an electric current control unit controlling electric current to be fed to a coil in the stepping motor based on the amount-of-rotation signal, and a notifying unit. The notifying unit provides a predetermined notification in a state that an image formation process can be executed based on an output from a detecting unit configured to detect a position of the first roller and a value counted by a measuring unit counting the amount of rotation instructed by the output unit.