Kyocera Document Solutions Inc.

Kyocera Mita Corporation

Hitoshi Hayamizu

Haruki Sayama

Daijiro Ueno

Hisaji Kawai

Tetsuya Ueno

Masaki Murashima

Tomoya Hotani

Keisuke Yamashita

Shota Nakayama

An image forming apparatus includes an image forming device, a transport belt, an optical sensor, an ultrasonic sensor, and a controller. The transport belt transports the recording sheet. The optical sensor emits light to the transport belt, and receives the light reflected by the transport belt. The ultrasonic sensor transmits ultrasonic wave to the transport belt, and receives the ultrasonic wave transmitted through the transport belt. The controller decides whether an output from each of the optical sensor and the ultrasonic sensor represents a normal value or an abnormal value, and executes predetermined control, depending on a combination of decision results about the respective outputs from the optical sensor and the ultrasonic sensor.

Image forming apparatus that detects status of transport belt that transports recording medium

An electronic apparatus includes a drive unit having a drive roller, a driving motor, and a limited-life component, a sound collecting device that collects sound from the limited-life component, and outputs sound data, a storage device storing in advance a sound pressure level corresponding to a specific frequency of the limited-life component, with respect to each of different lengths of the remaining service life, and a controller that analyzes frequency of the sound data at predetermined time points; acquires the sound pressure level corresponding to the specific frequency of the limited-life component, on a basis of a result of the frequency analysis; compares the acquired sound pressure level with the sound pressure level of each of the lengths of the remaining service life; predicts the remaining service life of the limited-life component, on a basis of comparison result; and displays the predicted remaining service life on a display device.

Electronic apparatus that predicts remaining service life of limited-life component, on basis of frequency analysis of sound data

A drying apparatus which dries a medium on which an image is formed with ink while conveying the medium includes a conveyance part, a heating part, a measurement part and a controller. The conveyance part conveys the medium in a predetermined conveyance direction. The heating part supplies energy to the image on the sheet conveyed in the conveyance part and dries the image. The measurement part measures a value accompanied with moisture contained in the medium. The controller estimates an amount of moisture contained in the medium based on the value measured by the measurement part, and controls at least one of the conveyance part and the heating part so as to change an amount of the energy supplied to the image based on the estimated amount of moisture.

Drying apparatus and image forming system

A sensor unit () includes a thermistor () and a connector (). A protection unit () includes a thermal cutoff () and a connector (). First and second intermediate connector units (--) electrically connects the connectors () and an external connection connector () to each other, respectively. An intermediate wire () electrically connects the first and second intermediate connector units (--) to each other. The first intermediate connector unit (-) electrically connects an end of a loopback wire () of the connector () to the external connection connector (), the second intermediate connector unit (-) connects an end of the thermal cutoff () to the external connection connector (), the intermediate wire () electrically connects an other end of the loopback wire () and an other end of the thermal cutoff () to each other.

Image forming apparatus with an improved heat protection for the fuser device

An image forming apparatus includes a storage and a controller. When it is determined that a temperature detected by a temperature detector is equal to or higher than a reference temperature, the controller stops a wireless communication between an RFID tag and a reader/writer. In addition, when a predetermined condition for determining that the detected temperature is lower than the reference temperature is satisfied, the controller starts the wireless communication between the RFID tag and the reader/writer, and causes the reader/writer to update information stored in the RFID tag to update information that was stored in the storage between a time point when it was determined that the temperature detected by the temperature detector is equal to or higher than the reference temperature and a time point when the predetermined condition was satisfied.

Image forming apparatus that updates information

A static eliminating device includes a substrate provided with a plurality of light emitters that irradiates light as static eliminating light onto a surface of a photosensitive body, and a plurality of limiting resistors that is provided on a same surface as the light emitters. One ends of each of the plurality of light emitters are connected to a power source via the plurality of limiting resistors. The static eliminating device further includes: a first switching section that supplies power from the power source to the plurality of limiting resistors and the plurality of light emitters at a ON state; and a second switching section that supplies power from the power source to the limiting resistors at the ON state, but does not supply the power to the light emitters.

Static eliminating device that eliminates surface of photosensitive body and image forming apparatus including the same

A heating device includes a plurality of chip resistors, a conductor pattern, and a substrate. The plurality of chip resistors generate heat upon receiving power from a power source. The conductor pattern is arranged so as to serially connect the plurality of chip resistors. The conductor pattern is formed on the substrate. The conductor pattern connecting the chip resistors is wider in a forward path from the power source than in a backward path. The majority of the heat generated by the chip resistor is transmitted from the chip resistor to the conductor pattern, and the transmitted heat is radiated from the conductor pattern. Thus, not only the heat from the surface of the chip resistor but also the heat from the conductor pattern serves as heat source.

Heating device and image forming apparatus

A sheet carrying apparatus comprises a job executing portion that includes a sheet carrying portion for carrying a sheet, a power supply portion that performs usual power supply to the job executing portion in a usual mode and stops the power supply to the job executing portion in a power saving mode that restricts the power supply more than the usual mode; an ejecting portion into which the sheet carried by the sheet carrying portion is ejected, and an ejected sheet detecting portion that detects presence of the sheet ejected in the ejecting portion, and when there is no sheet in the ejecting portion after a job including ejecting of the sheet into the ejecting portion ends, the power supply portion shifts from the usual mode to the power saving mode.

Sheet carrying apparatus and image forming apparatus having sheet detection power shifter

Provided is a fixing device including: a heater; a heating body that is heated by the heater and is caused to rotate; a pressure body that is in contact with the heating body, and is caused to rotate; a plurality of temperature sensor units each including a temperature sensing element that is covered with a protective member and is in contact with the heating body in order to sense a temperature of the heating body; and a control unit that recognizes temperatures of the heating body at respective portions thereof based on signals received from the temperature sensor units, brings the heater into an ON state if the recognized temperatures exhibit a temperature difference of a predetermined value or larger, judges that the protective member has peeled off if all the temperatures sensed by using the temperature sensor units are recognized to have risen, and corrects the temperature.

Fixing device, control method for a fixing device and image forming apparatus

An image forming device includes: a fixing portion including a nip that is formed between a heat roller and a back-up roller pressurized by a pressurizing mechanism and holds and conveys a toner-bearing sheet; a pressure switching mechanism for changing a pressurizing force of the pressurizing mechanism; and a sheet detecting portion for detecting a sheet conveyed to the fixing portion. The sheet detecting portion changes a state of sheet detection by the sheet detecting portion in tandem to operation of the pressure switching mechanism. The image forming device includes a pressurization state determining portion for determining a state of pressurization of the pressurizing mechanism on the basis of an output of the sheet detecting portion for a sheet non-passing time, and a pressurization state display portion for displaying the pressurization state determined by the pressurization state determining portion.

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Osaka, Japan

Hitoshi Hayamizu