Abstract: Segments each having side plates 102 and 103 and a plurality of inner plates 106 and 107 inside the side plates are coupled in the circumferential direction and in the longitudinal direction to construct a rehabilitation pipe inside an existing pipe. A plastic nut retainer 50 for retaining therein a nut 60 engaged with a coupling bolt 11 is attached between the side plate 102 on one side of the segment 1b and the inner plate 106 adjacent thereto. The coupling bolt is screwed into the nut co couple the segments 1a and 1b in the longitudinal direction due to clamping by screwing. A groove is formed in the nut retainer, and the nut is press-fitted into the groove and retained in the nut retainer.

Abstract: A solenoid valve includes a housing, a valve element provided in the housing to open and close a valve port, and a resin-molded guide member that includes a support portion supporting the valve element to be slidable in an axial direction, and an attachment portion attached to and in contact with an inner side of the housing. The guide member further includes an intermediate joint portion connecting the attachment portion and the support portion. The attachment portion is larger in shape in an orthogonal direction orthogonal to the axial direction than the intermediate joint portion. The support portion extends in the axial direction from the intermediate joint portion. The guide member has an injection-molding gate mark on an outer face of the attachment portion.

Abstract: A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support portion slidably supporting an outer surface of the valve body in the valve chamber. The valve body is slidable on the support portion between an open position at which an outlet port is open and a closed position at which a seat surface of the valve body closes the outlet port. The valve body includes a skin layer forming the outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body, other than the seat surface and a slidable area, includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

Abstract: A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support member fixed to the housing and supporting the valve body in the valve chamber. The valve body has a tubular shape into which the support member is inserted, and the valve body is slidable on the support member between a first position to close an inlet passage and a second position to close a drain passage. The valve body includes a skin layer forming an outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

Abstract: A solenoid valve includes a housing, a valve element provided in the housing to open and close a valve port, and a resin-molded guide member that includes a support portion supporting the valve element to be slidable in an axial direction, and an attachment portion attached to and in contact with an inner side of the housing. The guide member further includes an intermediate joint portion connecting the attachment portion and the support portion. The attachment portion is larger in shape in an orthogonal direction orthogonal to the axial direction than the intermediate joint portion. The support portion extends in the axial direction from the intermediate joint portion. The guide member has an injection-molding gate mark on an outer face of the attachment portion.

Abstract: A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support member fixed to the housing and supporting the valve body in the valve chamber. The valve body has a tubular shape into which the support member is inserted, and the valve body is slidable on the support member between a first position to close an inlet passage and a second position to close a drain passage. The valve body includes a skin layer forming an outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

Abstract: A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support portion slidably supporting an outer surface of the valve body in the valve chamber. The valve body is slidable on the support portion between an open position at which an outlet port is open and a closed position at which a seat surface of the valve body closes the outlet port. The valve body includes a skin layer forming the outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body, other than the seat surface and a slidable area, includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

Abstract: A thermoelectric material is manufactured by a manufacturing process including annealing at an annealing temperature from 125° C. to 200° C. and for an annealing time from 5 minutes to 12 hours applied to a substance selected from the group consisting of conductive polymer, polystyrene sulfonate (PSS), tosylate (TOS), chloride and perchlorate and a substance as solvent selected from the group consisting of ethylene glycol, ethanol, dimethyl sulfoxide and isopropanol.

Abstract: An electromagnetic valve includes a valve compartment inside an end tubular portion of a housing, a valve element provided in the valve compartment and movable to open or close a valve port, a guide member slidably supporting the valve element, a shaft contacting an end of the valve element to move the valve element, and a pressure release passage through which an inner compartment of the valve element communicates with the valve port in a closed state of the valve element.

Abstract: A server for controlling an image forming system according to an embodiment includes an interface that receives, from a user device, document data and instructions to print the document data. A storage section stores the document data. A controller determines a printing mode of the document data based on property information included in the document data. The controller selects for printing the document data, only one of a non-erasable image forming apparatus and an erasable image forming apparatus based on the determined printing mode. The controller controls a display device to display a screen for selecting an erasable printing mode designation if the printing mode is determined to be a non-erasable printing mode.

Abstract: An electromagnetic valve includes a valve compartment inside an end tubular portion of a housing, a valve element provided in the valve compartment and movable to open or close a valve port, a guide member slidably supporting the valve element, a shaft contacting an end of the valve element to move the valve element, and a pressure release passage through which an inner compartment of the valve element communicates with the valve port in a closed state of the valve element.

Abstract: An image forming apparatus according to an embodiment includes an image forming section having a cartridge detachably mounted thereto. The cartridge holds a color erasable material which is erasable by heating to a color erasing temperature. The cartridge includes a housing configured to hold the color erasable material and a temperature sensing unit configured to detect a storage temperature of the housing. The apparatus includes a display unit and a control section. The control section receives a maximum storage temperature of the housing, and determines whether the received maximum storage temperature is greater than the color erasing temperature. The control section controls the display unit to display a message indicating whether the received maximum storage temperature is greater than the color erasing temperature.

Abstract: An electromagnetic valve includes a valve compartment inside an end tubular portion of a housing, a valve element provided in the valve compartment and movable to open or close a valve port, a guide member slidably supporting the valve element, a shaft contacting an end of the valve element to move the valve element, and a pressure release passage extending through a part of the end of the valve element which does not contact the shaft. An inner compartment of the valve element communicates with the valve port through the pressure release passage in a closed state of the valve element.

Abstract: An image forming apparatus according to an embodiment comprises a first image forming section configured to form an image on a recording medium with a non-erasable material, and a second image forming section configured to form an image on the recording medium with an erasable material. The image forming apparatus further comprises a control section configured to separate image data according to attributes of the image data into first image data to be printed on the recording medium in the first image forming section and second image data to be printed on the recording medium in the second image forming section.

Abstract: According to an embodiment, a file document management server includes a controller and a memory. The memory stores expiration date information which indicates an expiration date of file documents which have been transmitted to a client device, and status information which indicates a storage state or a deletion state of the file documents of the client device to which the file documents have been transmitted. The controller changes the status information from a storage state to a deletion state when the expiration date passes.

Abstract: A decoloring device according to an embodiment includes a decoloring unit that erases a first image formed with erasable colorant on a first side of a sheet and a second image formed with erasable colorant on a second side of the sheet. A reading unit reads the first and second sides of the sheet and determines whether the first side and the second side are reusable. A single-side reusable paper tray stacks the sheet if the reading unit determines that only one of the first and second sides is reusable. A marking unit adds a mark to the one of the first and second sides that is determined to be not reusable when only one of the first and second sides is determined to be reusable.

Abstract: An electromagnetic valve includes a valve compartment inside an end tubular portion of a housing, a valve element provided in the valve compartment and movable to open or close an inlet passage, a support member slidably supporting the valve element, a shaft contacting an end of the valve element to move the valve element, and a pressure release passage extending through a part of the end of the valve element which does not contact the shaft. An inner compartment of the valve element communicates with a drainage passage through the pressure release passage in an open state of the valve element where the inlet passage is open to allow a working fluid flows from an upstream passage to a downstream passage through the inlet passage.

Abstract: According to an embodiment, a decoloring device is disclosed. A decoloring unit decolors an image formed with decolorable colorant on a sheet. A reading unit reads a surface of the sheet to determine whether the surface of the sheet is reusable. When the surface of the sheet read by the reading unit is determined to be not reusable, a marking unit adds a mark to the read surface. A first tray receives the sheet on which a mark is added by the marking unit.

Abstract: A server for controlling an image forming system according to an embodiment includes an interface that receives, from a user device, document data and instructions to print the document data. A storage section stores the document data. A controller determines a printing mode of the document data based on property information included in the document data. The controller selects for printing the document data, only one of a non-erasable image forming apparatus and an erasable image forming apparatus based on the determined printing mode. The controller controls a display device to display a screen for selecting an erasable printing mode designation if the printing mode is determined to be a non-erasable printing mode.

Abstract: An image forming apparatus according to an embodiment comprises a first image forming section configured to form an image on a recording medium with a non-erasable material, and a second image forming section configured to form an image on the recording medium with an erasable material. The image forming apparatus further comprises a control section configured to separate image data according to attributes of the image data into first image data to be printed on the recording medium in the first image forming section and second image data to be printed on the recording medium in the second image forming section.