Abstract: A corona discharge device including a corona electrode provided with multiple sharpened tip portions in a row includes a cleaning member which cleans the tip portions of the corona electrode while reciprocating along a predetermined movement direction set in advance with the tip portions biting into the cleaning member. A cleaning position at a surface of the cleaning member is different in a direction intersecting a longitudinal direction of the corona electrode between when the cleaning member moves toward one side in the movement direction and when the cleaning member moves toward another side in the movement direction.

Abstract: In a configuration in which a voltage of polarity opposite to charging polarity of toner is applied to a conveyance guide, controlling deposition of toner on the conveyance guide has been difficult. When performing duplex image formation, a potential difference between a surface potential of a photoconductive drum charged by a charging roller and a potential of the conveyance guide is smaller during printing on the second surface than during printing on the first surface.

Abstract: An image forming apparatus includes: a correction unit configured to correct a tone of each pixel in first image data in accordance with an image height on a photosensitive member, and output second image data; a halftone processing unit configured to determine exposed regions of pixels in an image by applying halftone processing to the second image data; and a scanning unit configured to form a latent image by scanning the photosensitive member with light that changes in scanning speed in accordance with an image height based on the exposed regions of the pixels. The scanning unit is further configured to perform partial exposure with respect to the pixels based on the exposed regions of the pixels, the partial exposure exposing partial regions of the pixels to light unlike entire exposure that exposes entire regions of the pixels to light.

Abstract: An image forming apparatus includes a photoconductor, a light source, and circuitry that receives: first image data including first pixels each indicating image density or one of turning on and off the light source; and tag data indicating an attribute of each first pixels. The circuitry sets specific data to identify a first target pixel subjected to change out of the first pixels, converts the first image data into second image data having a higher resolution than that of the first image data, and controls the light source according to the second image data to form an image. In conversion, the circuitry identifies a second target pixel corresponding to the first target pixel out of second pixels of the second image data according to the specific data and the tag data, and changes the second target pixel into a pixel to turn on the light source.

Abstract: According to one embodiment, an imaging display system includes an imaging device and a display device, which operate synchronously with each other. The imaging display system includes a control device. The control device is configured to measure light exposure when the imaging device captures an image and determine whether the measured light exposure is insufficient, and control the display device to decrease a refresh rate and the imaging device to prolong an exposure time, when determined that the light exposure is insufficient. The first scanning time for the imaging device to scan the image and the second scanning time required for the display device to scan the display panel are constant.

Abstract: An optical scanning device includes a rotary polygon mirror, a plurality of light sources, a light detecting portion, an obtainment processing portion, an a switching processing portion. The rotary polygon mirror has a reflection surface that reflects incident light, and scans, in a scanning cycle, the light reflected on the reflection surface. The light sources emit, toward the reflection surface, a plurality of light beams. The light detecting portion detects a light amount of each light beam reflected on the reflection surface. The obtainment processing portion obtains a switching timing to switch a light emission amount of each of the light sources in the scanning cycle, based on light amounts of the light beams detected by the light detecting portion. The switching processing portion switches the light emission amount of each of the light sources based on the switching timing obtained by the obtainment processing portion.

Abstract: Provided are an light scanning device capable of adjusting the position of optics and an image forming apparatus including the light scanning device. The light scanning device includes first and second light sources configured to emit first and second light beams, respectively; optics including first and second lenses for transmitting the first and second light beams therethrough and a lens holder configured to support the second lens; and a housing configured to support the first and second light sources and the optics, wherein the first and second light sources and the first lens are supported to be fixed to the housing, and the second lens is supported to be able to move with respect to the first lens.

Abstract: In one embodiment, an image forming apparatus has a mirror which reflects an optical scanning beam toward a photoreceptor, so as to expose the photoreceptor. A rotating member makes contact with the mirror, at an end portion of the mirror, to support the mirror, and rotates, to perform swing adjustment of the mirror. A stopper engages with the rotating member, at a position except a position on a straight line passing through a rotating shaft line of the rotating member and a contact position of the rotating member and the mirror, seen from a rotating shaft direction of the rotating member, to fix a rotation position of the rotating member.

Abstract: An image forming apparatus includes: an image bearing member; a developing device that develops an electrostatic latent image formed on the image bearing member; an attachment portion to which a developer supply container containing developer is attached; an information reading portion that reads information on the developer supply container stored in an information storage portion disposed in the developer supply container; a conveyance portion that communicates with a discharge port for discharging developer of the developer supply container and the developing device and conveys developer discharged from the developer supply container attached to the attachment portion to the developing device; a discharge mechanism that discharges developer from the developer supply container; and a controller that controls an operation of the discharge mechanism to reach a set discharged developer quantity using the information read by the information reading portion.

Abstract: A developing device includes a developing container, a detecting unit including a base portion and a detecting portion, a feeding path, a feeding screw, and a recessed portion provided on a side wall of the developing container. The recessed portion is disposed so as to project toward the feeding screw in the feeding path. The side wall includes a projected region projected toward the screw portion in the feeding path by the recessed portion and a region other than the projected region. The feeding screw includes a first screw portion opposing the projected region and a second screw portion opposing the region other than the projected region. The first screw portion includes a rotation shaft which includes a portion having a shaft diameter smaller than a shaft diameter of a rotation shaft of the second screw portion.

Abstract: A toner case includes a case main body, a shutter mount and a shutter. The case main body contains a toner to be replenished to a development device provided in an apparatus main body and is detachably attached to the apparatus main body. The case main body has an opened face on which a discharge port is arranged and the discharge port corresponds to a replenishment port of the development device in a state where the case main body is attached to the apparatus main body. The shutter mount is provided to form a gap between the opened face of the case main body and the shutter mount. The shutter is provided between the opened face of the case main body and the shutter mount to be slidable to open and close the discharge port. The shutter mount includes a film which comes into sliding contact with the shutter.

Abstract: A developing apparatus including: a first chamber including a first conveyance member conveying developer in a first direction; a second chamber including a second conveyance member having a conveyance portion conveying the developer in a second direction opposite to the first direction and a return conveyance portion provided downstream of the conveyance portion in the second direction to convey the developer in the first direction; a first partition wall provided between the first chamber and the second chamber to form a first communication portion and a second communication portion to form a circulation route; and a bearing member configured to rotatably support the second conveyance member and including: a discharge port provided downstream of the return conveyance portion; and a second partition wall extending from the bearing member in the first direction to cover a portion of the return conveyance portion confronting the first communication portion.

Abstract: A fixing member for a fixing device, the fixing member includes a cylindrical base layer; and a plurality of heat generating resistors extending in a longitudinal direction of the fixing member on the base layer and arranged with intervals in a circumferential direction of the base layer, wherein heat generating resistors have volume resistivities lower than that of the base layer, the heat generating resistors include a first heat generating resistor and a second heat generating resistor adjacent to each other in the circumferential direction, and the first heat generating resistor and the second heat generating resistor are at least partly overlapped in the circumferential direction.

Abstract: The present invention provides a self-heating fuser roller including a tubular resistor layer that generates heat by being supplied with electricity, in which the resistor layer has a plurality of slits. The slits are preferably disposed at regular intervals in a circumferential direction. The slits preferably extend in an axial direction. Preferably, the slits are not provided on both end edges in an axial direction. The slits preferably have an average width of 50 ?m or more and 2 mm or less. The slits preferably have an average interval of 30 ?m or more and 1 mm or less. The slits are preferably filled with a resin composition. The resistor layer preferably includes a resin matrix and a plurality of electrically conductive particles contained in the resin matrix.

Abstract: Provided is a fixing apparatus for fixing a toner image on a recording material while conveying the recording material on which the toner image has been formed at a nip portion that includes a roller, a heating unit configured to heat the roller from outside the roller, the heating unit receiving power supplied from a power supply, a backup unit forming the nip portion with the roller, and a power shutdown member configured to operate in response to an abnormal temperature of the backup unit and shut down power supply to the heating unit.

Abstract: A method of controlling the temperature of a fuser is disclosed. The fuser is driven with a repeated sequence of half-cycles of an AC line voltage. The sequence contains partial half-cycles and does not have a repeating sequence shorter than twenty half-cycles. The disclosed sequences provide fine granularity of fuser power while generating low power-line flicker and harmonics. Other methods and systems are disclosed.

Abstract: A fixing device includes: a tubular member extending in an axial direction and supported so as to be rotatable; a heat-generating member extending in the axial direction and in contact with an area between one end and the other end of the tubular member, the heat-generating member generating heat to heat the tubular member by receiving voltage; a pressure member that presses, to an outer circumferential surface of the tubular member, a recording medium having a toner image transferred thereto; and an interrupting member disposed between another portion of the heat-generating member and the tubular member and extending in the axial direction, the interrupting member being in contact with an area between one end and the other end of the heat-generating member and interrupting the voltage applied to the heat-generating member when at least a portion in contact with the heat-generating member reaches or exceeds a threshold temperature.

Abstract: An image forming apparatus, comprising a conveyance path configured to convey an image receiving medium; a fixing device configured to fix an image formed on the image receiving medium; a first roller arranged at the downstream side of a conveyance direction of the image receiving medium with respect to the fixing device, the first roller comprising an axis; a second roller configured to face the first roller and an end thereof of which protrudes towards a central part of the conveyance path with respect to an end of the first roller at the central part of the conveyance path in a first direction substantially parallel to the axis; and a protrusion arranged at the second roller side to protrude towards the first roller side from the second roller side and a protruding amount of which is greater than that of the second roller.

Abstract: A fixing device including an endless belt, a rotary body positioned outside of the endless belt, the rotary body having an axis extending in an axial direction, an elastic member positioned at an inner space of the endless belt and configured to nip the endless belt in cooperation with the rotary body, and an adhering member having rigidity higher than rigidity of the elastic member. The elastic member has a contact surface in contact with the endless belt. The adhering member has an adhered portion adhered to an opposite surface opposite to the contact surface. The adhering portion has a length in the axial direction smaller than the length of the elastic member in the axial direction.

Abstract: An endless belt comprising a polyimide-based substrate layer. A plurality of boron nitride nanotubes are dispersed in the polyimide.

Abstract: A fixing device, which is included in an image forming apparatus, includes a heater, a heating target body, a biasing body, a pressure body, a moving body, a drive source, and a drive transmitter. The heating target body is configured to be heated by the heater. The biasing body is configured to apply a biasing force. The pressure body is configured to be pressed by the biasing body toward the heating target body. The moving body is configured to move the pressure body away from the heating target body against the biasing force applied by the biasing body. The drive source is configured to apply a driving force. The drive transmitter is configured to transmit the driving force of the drive source to the moving body and includes a planetary gear device and a worm gear.

Abstract: An image forming apparatus includes an image forming device, a fixing device including a first rotary member of which a surface layer containing a fluororesin is brought into contact with a sheet surface having an unfixed toner image formed by the image forming device, and a controller. In a case that image formation processing for continuously forming a toner image on a plurality of predetermined sheets is executed, the controller can control conveyance of a sheet so that a portion of the surface layer of the first rotary member which is brought into contact with a trailing edge of a preceding sheet is brought into contact with a margin area on a leading edge side on a next sheet.

Abstract: An image forming apparatus includes one or plural forming devices that form respective images on a recording medium that is being transported, a fixing device provided on a downstream side with respect to at least one of the forming devices in a direction of transport of the recording medium and that fixes the images formed on the recording medium, a delivering device that receives the recording medium transported in a first direction and discharges the recording medium in a second direction that is different from the first direction, and a supplying device that supplies the recording medium to any of the forming devices or to the delivering device. The forming devices, the fixing device, the delivering device, and the supplying device have respective housings and are each joinable to any of the other devices.

Abstract: A fixing device has: a nip member; a tubular belt looped around the nip member and including a metal tube, the metal tube having an outer peripheral surface; and a roller having a shaft and an elastic portion covering the shaft, the roller defining an axial direction, the elastic portion and the nip member being configured to nip a predetermined portion of the tubular belt. The outer peripheral surface of the metal tube has an end region in the axial direction, and a rough region between the end regions. The rough region has a surface roughness greater than a surface roughness of the end region. And the end region and the rough region provide a boundary region, therebetween which is positioned outward of the predetermined region in the axial direction.

Abstract: A fixing device includes a fixing roller heated to a predetermined temperature by a heater; a pressure belt in pressure contact with the fixing roller; and a pressing part which presses the pressure belt toward the fixing roller. The fixing device adopts a belt-nip system and fixes a toner image formed on a recording medium to the recording medium by heat and pressure while the recording medium is nipped and conveyed through a nip part. The nip part is formed by the fixing roller and the pressure belt and includes an adhesion nip and a separation nip. The pressing part includes a pressing member, a sheet member which covers the pressing surface of the pressing member along a conveying direction of the recording medium, and a pressing fluid which is filled at the adhesion nip between the pressing member and the sheet member.

Abstract: A pressure and pressure relief device includes a rotator, a pressure body, a first pressure lever, and a biasing mechanism. The biasing mechanism includes a first elastic body, a second pressure lever, a cam, and a cam follower. A relations of L1>L3, L2>L4, and L3<L4 are satisfied. L1 represents a length between a first fulcrum of the first pressure lever and a point of load of the first pressure lever. L2 represents a length between the point of load of the first pressure lever and a hook portion of the first pressure lever. L3 represents a length between a pivot of the second pressure lever and a second fulcrum of the second pressure lever. L4 represents a length between the second fulcrum of the second pressure lever and a fastened portion of the second pressure lever.

Abstract: An image forming apparatus that, in a case where it is determined that a scaling ratio of the inputted image data does not exceed a predetermined threshold, executes processing for scaling the inputted image and then executes first detection processing that detects an amount of applied toner using image data after scaling, and in a case where it is determined that the scaling ratio of the inputted image data exceeds the predetermined threshold, executes second detection processing that detects the amount of applied toner using the inputted image data prior to scaling and then executes scaling processing after executing the second detection processing.

Abstract: An image forming apparatus includes a first image bearing member, a second image bearing member, an intermediate transfer belt, a first primary transfer member, a second primary transfer member, a secondary transfer outer member, a pre-secondary transfer stretch roller, a driving roller, and an execution portion. The execution portion is configured to execute a first monochromatic mode in which a bias smaller than the primary transfer bias applied to the first primary transfer member in a case where a toner image is formed on the first image bearing member is applied to the first primary transfer member, and the primary transfer bias applied to the second primary transfer member in a case where a toner image is formed on the second image bearing member is applied to the second primary transfer member.

Abstract: A drum unit includes a photosensitive drum and a cleaning member. A scratch remaining depth measured by a scratch test of the photosensitive drum under a following Test Condition 1 is 110 nm or less. Test Condition 1 is; test environment temperature=25° C.; test environment humidity=50%; test indenter=pre-mount type Berkovich indenter; scratch direction=horizontal direction; scratch speed=20 ?m/sec; initial load=0 mN; maximum reaching load=4 mN; and load at the time of measuring the scratch remaining depth=1.9 mN.

Abstract: A method and system for monitoring replaceable components of a work unit is disclosed. The method assigns an RFID tag to each wear part of a work unit. Prior to each operating cycle, the RFID tags are read and the RFID tags are correlated to corresponding wear parts. During operation of the work unit, operating parameters are read from the pumping unit and associated with each of the wear parts. A real-time life cycle status is determined for each of the wear parts based upon historic operating parameters and present operating parameters. Based upon the real-time life cycle status, the system and method of the present disclosure predicts the remaining wear life and relays this information to interested third parties. Interested third parties can then contact the equipment owner to provide information as to when parts need to be replaced prior to failure.

Abstract: A feed unit stackable with another feed unit in the up-down direction includes a unit body and a storage cassette. The storage cassette has a cassette body in which a recording medium is stored, and is removably inserted in the unit body. The unit body has a positioning member projecting from its top face to serve to position another feed unit loaded on the feed unit. The storage cassette has a side cover forming a part of the exterior face of the feed unit. The side cover has a fitting part extending toward the top face of the unit body, and in the fitting part, an engagement recess is formed with which the positioning member engages so as to position the storage cassette relative to the unit body.

Abstract: The electro-photographic sheet of paper duplex printing machine includes a sheet supply section, a sheet positioning section which positions sheets and sends out sheets to a backup roller in an electro-photographic printing section, the electro-photographic printing section transfers an image which has been transferred onto the transfer roller onto the sheet, a chain delivery section, a delivery section and a sheet carrying section for turnover. The chain delivery section selectively transfers printed sheets, which has been transferred from the backup roller to the delivery section or sheet carrying section for turnover. The sheet carrying section for turnover supplies one side printed sheet to the sheet positioning section. The sheet fed from the sheet supply section and one side printed sheet fed from the sheet carrying section for turnover are alternately carried to the sheet positioning section and the toner image on the printed sheet is fixed by the fixing device.

Abstract: An image formation apparatus that includes: first to third image formation units provided in this order in a traveling direction of a transfer target medium; a detector configured to detect first to third correction pattern formed on the transfer target medium by the first to third image formation units, respectively; and a control unit programed to control image misregistration correction based on a result of detection by the detector. The control unit causes the first and third image formation units to form the first and third correction patterns on the transfer target medium, respectively. When an amount of image misregistration between the first correction pattern and the third correction pattern is less than a predetermined value, the control unit neither causes the second image formation unit to form the second correction pattern, nor executes the image misregistration correction.

Abstract: A photoconductor unit for an electrophotographic image forming device according to one example embodiment includes a housing and a photoconductive drum rotatably mounted on the housing. A cam is mounted on the housing and has a cam surface that is positioned to contact a corresponding locating surface. The cam surface has a variable height in an axial direction of the photoconductive drum such that as a position of the cam changes relative to the housing, the photoconductive drum shifts in the axial direction relative to the locating surface.

Abstract: A photoconductor unit for an electrophotographic image forming device according to one example embodiment includes a housing and a photoconductive drum rotatably mounted on the housing. An engagement member is positioned to receive an actuation force from an actuator of the image forming device. Upon receiving the actuation force, the engagement member shifts the photoconductive drum in an axial direction relative to an axis of rotation of the photoconductive drum.

Abstract: An image forming apparatus includes an apparatus main assembly, a controller provided in the apparatus main assembly, an operating portion mounted to the apparatus main assembly, a cable configured to electrically connect the controller and the operating portion, the cable having a connectable length with the operating portion mounted at a predetermined position, and an accommodating portion provided in the apparatus main assembly and configured to accommodate an excessive length portion of the cable connected with the operating portion mounted to the apparatus main assembly, the accommodating portion including a space for accommodating the cable in a wound state.

Abstract: In accordance with a first aspect of the present disclosure, a cleaning device includes a conveying member and a plurality of scraping pieces. The conveying member has a rotating shaft and a spiral blade formed around the rotating shaft. The conveying member is configured to be rotated around an axis to convey a toner removed from an image carrier in a direction of the axis. The plurality of scraping pieces are arranged in the direction of the axis. The plurality of scraping pieces are configured to be turnable so as to alternately come into contact with the rotating shaft and the spiral blade to scrape the toner adhered on the rotating shaft. A width of the scraping piece in the direction of the axis is equal to or below ½ of a gap between the adjacently arranged scraping pieces in the direction of the axis.

Abstract: In an imaging device having a photoconductive drum and a lubricant applicator brush, methods and apparatus teach application of the lubricant to the drum at a transfer nip and removing undeveloped toner particles. A first voltage is applied to the drum while the brush receives a voltage that switches more positive and more negative than the first voltage. It attracts to the brush from the drum negatively and positively charged toner. Embodiments contemplate amounts of voltages and frequencies of switching. An elongate rod contacts the brush downstream of the transfer nip to flicker off the toner particles from the brush. The rod can also have voltages applied and switched greater than and lesser than the voltages of the applicator brush to facilitate toner removal. A cleaning blade downstream of the transfer nip scrapes clean a surface of the drum.

Abstract: A sheet conveying device, which is included in an image forming apparatus, includes first and second sheet conveying bodies to contact each other, a cover to move relative to an apparatus body of the image forming apparatus, and a connecting body to connect the cover and the second sheet conveying body. The second sheet conveying body separates from the first sheet conveying body along with an opening movement of the cover. The connecting body includes a first connecting portion connected to the cover and a second connecting portion connected to the second sheet conveying body. At least one of a connection with the cover and a connection with the second sheet conveying body is released when the cover is closed. The connecting body is brought into connection with the cover or the second sheet conveying body.

Abstract: In an image forming apparatus provided with a cover opening and closing mechanism, a cover opening and closing mechanism includes a button, an operating pin, and a belt-like elastic body that takes a first posture and a second posture, both of which have shape stability, by a snap-through buckling phenomenon. The belt-like elastic body takes the first posture in a state in which the cover has been closed and prevents the operating pin from being pressed to a side of the image forming apparatus body, and is pushed by a pushing operation of the button to take the second posture, operates the operating pin to be pressed to the side of the image forming apparatus body, and opens the cover by reaction force thereof.

Abstract: An electrophotographic image forming apparatus includes a process cartridge detachably mountable to a main assembly, a developing cartridge, and a cartridge supporting member movable between an inside position in which the pair of the process cartridge and the developing cartridge are located at an image forming position and an outside position in which the process cartridge and the developing cartridge are mountable and demountable. A first portion-to-be-pressed is provided on the process cartridge, a main assembly side process cartridge urging member is provided in the main assembly for pressing the first portion-to-be-pressed when the cartridge supporting member is in the inside position, and a second portion-to-be-pressed is provided on the developing cartridge. In addition, a main assembly side developing cartridge urging member is provided for pressing the second portion-to-be-pressed when the cartridge supporting member is located at the inside position.

Abstract: An image forming apparatus includes a main body including a first guide portion and a second guide portion, a process cartridge including a photosensitive drum, a support frame configured to support the process cartridge and move between an inside position and an outside position. The support frame includes a first side frame. The first side frame includes a first guided portion to be guided by the first guide portion. The second side frame includes a second guided portion guided by the second guide portion A dimension of the first side frame is greater than or equal to a dimension of the first side frame. A dimension of the second side frame is greater than or equal to a dimension of the second side frame.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a fuser configured to fuse a print sheet on which toner is developed and a fuser driver configured to supply a heating element of the fuser with a power source supplied from an external alternating current (AC) so as to enable the fuser to have a preset target temperature. The fuser driver performs a control of the number of waveforms hours of an AC power source supplied to the heating element by varying a control cycle according to a temperature of the fuser.

Abstract: An optical scanning device includes a cooling air passage that passes through inside of the housing, a blowing part that takes in air outside of the housing from a first end portion of the cooling air passage and allowing the air to be discharged from a second side portion, the first end portion facing the second side portion, a foreign matter falling concave part provided adjacent to the transparent cover in the predetermined direction such that an accumulated foreign matter is fallen at a front side in a progress direction of the cleaning member when the cleaning member reaches each moving end of the reciprocal movement path, and a communication passage that allows the foreign matter falling concave part and the cooling air passage to communicate with each other.

Abstract: An image forming apparatus has a cooler, an air passage switching member, a swing mechanism, a drive gear train, and a restricting mechanism. The air passage switching member is swingable and switches the path of cooling air produced by the cooler. The swing mechanism swings the air passage switching member. The drive gear train transmits a rotation driving force to the swing mechanism. The restricting mechanism restricts the swinging range of the swing mechanism. The swing mechanism has a first gear coupled to the drive gear train, and an actuator swingably coupled to the first gear with a predetermined load and coupled to the air passage switching member. By swinging the actuator together with the first gear while restricting the swinging range of the actuator with the restricting mechanism, the air passage switching member is switched between a first position and a second position.

Abstract: A display hand intended to equip a timepiece, including a body and a pipe, providing an arbor hole arranged for fitting the display hand onto a drive arbor. The body is made of a composite material, the pipe includes, over all or part of the outer periphery, a surface for connection to the hand body to ensure the adhesion of the composite material to the pipe.

Abstract: A device for monitoring athletic performance of a user has a wristband configured to be worn by the user. The electronic module may include a controller and a screen and a plurality of user inputs operably associated with the controller. The user inputs may include a user input configured to be applied by the user against the screen and in a direction generally normal to the screen. The controller may further be configured to generate one or more user interfaces in response to various user inputs and conditions. For example, the controller may generate workout mode interfaces and non-workout mode interfaces including various goal information, workout data, reminders and the like. In one or more arrangements, multiple types of information may be displayed simultaneously.

Abstract: An electronic timepiece has a time display unit including a dial made from a non-conductive material, and hands; and a movement that drives the hands. The movement includes a circuit board, a planar antenna attached to the circuit board, a stepper motor that drives the hands, and a battery. The planar antenna, the stepper motor, and the battery are disposed to positions overlapping the time display unit in plan view, and not overlapping each other in plan view.

Abstract: According to an aspect of the present invention, a device capable of wireless communication includes a counter for counting current time, and a processor for setting a communication mode of the device to one of a notification mode in which the device sends a first notification signal for informing of its existence and a detection mode in which the device detects a second notification signal sent from other device. In the case that the processor changes the communication mode of the device from the notification mode to the detection mode and the second notification signal received in the detection mode includes first time information, the processor corrects time of the counter based on the first time information.

Abstract: The disclosure proceeds from a system, in particular from a portable power tool system, having at least one mobile functional module which has at least one communications unit for communicating electronic data, having at least one building infrastructure device which has at least one communications unit for communicating with the functional module, and having at least one control and/or regulation unit which is at least intended to use an evaluation of a communication between the functional module and the building infrastructure device to at least infer a position of the functional module. It is proposed that the functional module is at least intended to sense at least one article-specific parameter, a user-specific parameter and/or an environment-specific parameter and/or to transmit said parameter(s) at least to the building infrastructure device.