Abstract: A cylinder head of a multi-cylinder engine is provided, the cylinder head including a plurality of ceiling parts for respective cylinders, and a water jacket. Each ceiling part is connected to an intake port including a primary port and a secondary port aligned in a cylinder-row direction, and is attached with an in-cylinder pressure sensor. A plug is attached to a hollow part of the cylinder head corresponding to a core print provided to a core of the water jacket, and is disposed at a position corresponding to a location between certain cylinders. The in-cylinder pressure sensor is attached at a position on an opposite side from the plug with respect to a cylinder center axis in the cylinder-row direction. Positions of the primary and secondary ports connected to each ceiling part are interchanged in the cylinder-row direction according to the position of the in-cylinder pressure sensor.

Abstract: A cylinder head of a multi-cylinder engine is provided, the cylinder head including a plurality of ceiling parts for respective cylinders, and a water jacket. Each ceiling part is connected to an intake port including a primary port and a secondary port aligned in a cylinder-row direction, and is attached with an in-cylinder pressure sensor. A plug is attached to a hollow part of the cylinder head corresponding to a core print provided to a core of the water jacket, and is disposed at a position corresponding to a location between certain cylinders. The in-cylinder pressure sensor is attached at a position on an opposite side from the plug with respect to a cylinder center axis in the cylinder-row direction. Positions of the primary and secondary ports connected to each ceiling part are interchanged in the cylinder-row direction according to the position of the in-cylinder pressure sensor.

Abstract: An image forming apparatus includes an image forming unit having a plurality of members, a control unit, and a sound collecting unit. The control unit controls operations of the plurality of members in a first operation mode in which the image forming unit forms an image on a recording material. The sound collecting unit collects a sound that arises in the image forming apparatus during the first operation mode execution to generate a sound signal. When it is determined, based on the generated sound signal, that an abnormal sound has arisen, the control unit determines a source of the abnormal sound by transitioning to a second operation mode after the first operation mode has ended and causing, in the second operation mode, one or more members, from the plurality of members, that are possible sources of the abnormal sound to operate separately from the remaining plurality of members.

Abstract: An image forming unit forms an image on a sheet. The sheet is conveyed through a conveyance path after the image has been formed on the sheet. A reading unit reads the image formed on the sheet in the conveyance path. A conveyance guide constitutes a portion of the conveyance path and guides the sheet. A pressing unit presses the reading unit against the sheet. A connection unit connects the reading unit and the conveyance guide such that the reading unit and the conveyance guide move in an interlocked manner.

Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet, a conveyance guide unit, and a conveyance unit. The conveyance guide unit conveys the sheet on which the image is to be formed by the image forming unit. The conveyance unit conveys the sheet toward a first conveyance guide unit. The conveyance guide unit includes an urging member, a rotary member to be urged by the urging member and to rotate while abutting the sheet, a holding unit holding the urging member and the rotary member, and the first conveyance guide unit that is detachably attached to the holding unit to guide the sheet. The first conveyance guide unit includes a pressed portion, and the pressed portion is to be pressed by the sheet conveyed by the conveyance unit and has strength less than strength of the holding unit.

Abstract: An optical fiber cable includes a plurality of intermittently connected optical fiber ribbons inside a cable sheath, in which a fibrous filler or an FRP using the fibrous filler is provided on at least one pair of diagonals of the two diagonal directions approximately orthogonal to each other inside the cable sheath. An average linear expansion coefficient of the fibrous filler at ?40° C. to +70° C. is smaller than an average linear expansion coefficient of the cable sheath at ?40° C. to +70° C.

Abstract: An optical fiber ribbon in which a plurality of optical fibers are integrated by a common coated layer includes: an intermittent connection portion in which a connection portion formed from the common coated layer and a non-connection portion including no common coated layer are alternately formed in a longitudinal direction between every predetermined number of optical fibers equal to or greater than two; and a continuous connection portion in which a connection portion formed from the common coated layer is continuously formed in a longitudinal direction between optical fibers other than the predetermined number of optical fibers equal to or greater than two. A thickness of the connection portion of the intermittent connection portion is thinner than a thickness of the continuous connection portion.

Abstract: An object detection device which determines an amplitude Ar of an ultrasonic wave received by a receiving unit, detects a frequency fr of the ultrasonic wave, sweeps a frequency fp of a pulse signal after a predetermined time has elapsed from start of generation of the pulse signal, and determines that the received ultrasonic wave is a reflected wave of the probe wave when the frequency fr after the amplitude Ar becomes a predetermined reference value or more from start of transmission of the probe wave makes the same change as the frequency fp. When an ultrasonic wave received by a receiver is determined to be a reflected wave of the probe wave, the object detection unit calculates a distance to an object based on a time from transmission of the probe wave to reception of the ultrasonic wave.

Abstract: In an air cleaner, an air cleaner case having an upper opening which opens upward is formed. The air cleaner case is formed of a front wall, a rear fender, and right and left side covers. The upper opening is closed by a seat. A sound absorbing member is bonded to a bottom plate of the seat and housed in an air cleaner space. The intake noise in the air cleaner is absorbed by the sound absorbing member.

Abstract: A sheet discharge apparatus includes a pivot member pivoting in an up-down direction by being pressed by a sheet discharged from a sheet discharging portion, with the pivot member retained by being in contact with an uppermost sheet supported on the sheet supporting portion. A control unit changes a sheet interval between a preceding sheet and a succeeding sheet and executes a first discharge operation in which at least one sheet is discharged, and a second discharge operation in which sheets are discharged by the sheet discharging portion at a first sheet interval such that the pivot member does not contact with an uppermost sheet supported on the sheet supporting portion during the second discharge operation, and the control unit acquires a number of sheets to be discharged in the second discharge operation based on a detected position of the pivot member detected during the first discharge operation.

Abstract: An image forming apparatus includes an image forming unit provided on a first conveyance path, a reading unit provided on a second conveyance path and configured to read image information from a sheet conveyed in the second conveyance path, the second conveyance path branching from the first conveyance path, the sheet being conveyed through the second conveyance path in a case of forming an image on a second surface of the sheet opposite to a first surface of the sheet on which an image has been formed by the image forming unit, an opposing member configured to oppose the reading unit with a space therebetween, and a conveyance roller configured to convey the sheet through the space between the reading unit and the opposing member and rotatably supported by the opposing member.

Abstract: An image forming apparatus includes a first detector detecting an operation sound based on a sound wave received by a receiver; a second detector detecting basis weight of recording material based on an ultrasonic wave transmitted from a transmitter and received by the receiver; a switching unit that switches destination of a reception signal from the receiver between a first path to the first detector and a second path to the second detector; and a controller that controls the switching unit such that the reception signal is output to the first path at a first timing and to the second path at a second timing. When a predetermined condition is satisfied, the controller controls the switching unit such that the reception signal is output to the second path at the first timing or to the first path at the second timing.

Abstract: An image forming apparatus includes an image forming unit having a plurality of members, a control unit, and a sound collecting unit. The control unit controls operations of the plurality of members in a first operation mode in which the image forming unit forms an image on a recording material. The sound collecting unit collects a sound that arises in the image forming apparatus during the first operation mode execution to generate a sound signal. When it is determined, based on the generated sound signal, that an abnormal sound has arisen, the control unit determines a source of the abnormal sound by transitioning to a second operation mode after the first operation mode has ended and causing, in the second operation mode, one or more members, from the plurality of members, that are possible sources of the abnormal sound to operate separately from the remaining plurality of members.

Abstract: An object detecting apparatus is configured to detect a surrounding object. The object detecting apparatus is provided with a driving signal generation unit provided to generate a driving signal that drives a transmitter unit including a transmitter emitting transmission waves externally; and a control unit provided to control an output of the driving signal transmitted to the transmitter unit from the driving signal generation unit. The driving signal generation unit is configured to generate the driving signal of which the frequency changes stepwise.

Abstract: A first driven lever of a vehicle wiper device has a proximal end pivotally connected to a distal end of a first driving lever. A second driven lever has a proximal end pivotally connected to a distal end of the first driven lever and a distal end pivotally connected to a distal end of a second driving lever. A first wiper arm operates integrally with the second driven lever and has a distal end to which a first wiper blade is connected. A swing transmission mechanism transmits a driving force to the first driving lever. The swing transmission mechanism includes a swing crank arm integrally rotatable with a rotation shaft of a single drive source. An extension-contraction transmission mechanism transmits a driving force to the second driving lever. The extension-contraction transmission mechanism includes an extension-contraction crank arm integrally rotatable with the rotation shaft of the drive source.

Abstract: There is provided an image forming system that includes an image forming apparatus including, a first variable mechanism that varies from a first state to a second state or from the second state to the first state when physically operated by a user, a first detection unit configured to detect the variation of a state of the first variable mechanism, and a sound collection unit. The image forming system further includes a generation unit configured to generate, when the variation is detected by the first detection unit, first statistical information regarding at least one sound wave obtained by the sound collection unit in a period based on a timing when the variation is detected.

Abstract: A transfer unit includes a reading unit to read an image on a sheet conveyed along a conveyance path, a first signal transmission member having a flat shape and is connected to the reading unit, and a relay member connected to the first signal transmission member. The relay member relays a signal from the first signal transmission member, and a second signal transmission member having a round shape and is connected to the relay member. The second signal transmission member leads into an apparatus body from an inner portion of the transfer unit in an axial direction of a first rotation shaft.

Abstract: An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

Abstract: An image forming apparatus includes a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.

Abstract: A transfer unit includes a reading unit to read an image on a sheet conveyed along a conveyance path, a first signal transmission member having a flat shape and is connected to the reading unit, and a relay member connected to the first signal transmission member. The relay member relays a signal from the first signal transmission member, and a second signal transmission member having a round shape and is connected to the relay member. The second signal transmission member leads into an apparatus body from an inner portion of the transfer unit in an axial direction of a first rotation shaft.