Kyocera Document Solutions Inc.

Kyocera Mita Corporation

Fumiaki Takiguchi

Satoshi Takahashi

Junya Yoda

Tomoyoshi Sugihara

An image forming apparatus includes a heater, a preparation processing portion, an acquisition processing portion, and a prediction processing portion. The heater heats a fixing member used to fix a toner image in response to supply of an AC voltage from a commercial power supply. The preparation processing portion executes a heating process of heating the fixing member to a predetermined target temperature using the heater when the image forming apparatus transitions from a first state in which image formation is impossible to a second state in which image formation is possible. The acquisition processing portion acquires a voltage value of the AC voltage supplied from the commercial power supply. The prediction processing portion predicts an execution time of the heating process based on the voltage value of the AC voltage acquired by the acquisition processing portion.

Image forming apparatus and prediction method capable of improving prediction accuracy of execution time of heating process of heating fixing member

An input device includes a touch panel, a touch button, a first measurement device, a second measurement device, a first detection device that detects a touch position on the touch panel, based on a difference between the electrostatic capacitance measured by the first measurement device and a panel baseline value, a second detection device that detects a touch operation on the touch button, based on a difference between the electrostatic capacitance measured by the second measurement device and a button baseline value, an error decision device that decides that the touch operation is an error, when the touch operation satisfies a predetermined condition, and a controller that sets the button baseline value to an initial value, when the error decision device has identified an error, and sets the panel baseline value to an initial value, when the error decision device has not identified an error.

Input device that sets button baseline value or panel baseline value to initial value, depending on whether touch operation on touch button based on electrostatic capacitance is valid, and image forming apparatus

A display input device has a touch screen, which includes a touch panel for accepting a touch operation, and a control portion. The control portion detects contact position on the touch panel with a contact body, contact size on the touch panel with the contact body, and contact pressure on the touch panel with the contact body, judges whether calibration is necessary based on the contact position, contact size, and contact pressure, and performs calibration when it is judged that calibration is necessary.

Display input device and image forming apparatus

An image forming apparatus has an operation portion, an operation sensing portion, a human detecting portion, and a sensing period adjusting portion. The operation portion accepts operation by a user. The operation sensing portion senses operation on the operation portion. The human detecting portion detects the presence of a human body within a previously set detection distance. The sensing period adjusting portion adjusts a operation sensing period of the operation sensing portion based on the detection distance of the human detecting portion.

Image forming apparatus

A fixing device is provided with a fixing unit for fixing a toner image; a magnetic flux generator including a switching element for generating a magnetic flux; and a control unit for performing a start-up mode for raising the temperature of the fixing unit to a fixing temperature by the magnetic flux and a steady mode for maintaining the temperature of the fixing unit at the fixing temperature. The control unit turns off the switching element when the temperature of the switching element is equal to or higher than a first reference temperature lower than a destruction temperature during a period of the start-up mode, and turns off the switching element when the temperature of the switching element is equal to or higher than a second reference temperature lower than the destruction temperature and higher than the first reference temperature during a period of the steady mode.

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Osaka, Japan

Fumiaki Takiguchi