摘要:
A rotation measuring mechanism capable of measuring a rotation amount and a displacement amount of a rotary member in a direction perpendicular to the rotation axis is provided. An exemplary combination of the rotation measuring mechanism includes a detection target rotating in synchrony with the rotary member and range sensors. Each time the detection target rotates once, each sensor outputs one cycle of a sine wave. The amplitude of the sine wave output from the sensor varies in accordance with the displacement of the detection target together with the rotary member in the direction perpendicular to the axis, thereby obtaining the rotation amount and the displacement amount of the rotary member.
摘要:
A system abnormality determining method comprises the steps of transmitting fake abnormal information representing an abnormal condition of the target instrument from the target instrument to a condition determination device via a network during a test operation of the target instrument instead of condition information, determining if the condition determination device can determine the target instrument as being abnormal based on the fake abnormal information, and operating the target instrument in a normal operation condition when the condition determination device can determine the target instrument as being abnormal.
摘要:
A first feature quantity computing unit that computes a first feature quantity representing an average of a plurality of driving loads recorded by a driving load of a fixing section recording unit of an image forming device that records the driving load acquired by a driving load acquiring unit that acquires the driving load, a second feature quantity computing unit that computes a second feature quantity representing a deviation of the plurality of the driving loads, and a diagnosis unit that performs failure diagnosis including estimation of a cause of a failure of the fixing section using the first feature quantity and the second feature quantity are used.
摘要:
An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. A width obtaining unit obtains width information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the width information as well as the image area, the behavior, and the thickness information.
摘要:
A management device for an image forming apparatus including a status data collection unit where multiple types of status data are received from the image forming apparatus and stored in a status database, a target data creation unit where multiple types of target data are created based upon the multiple types of status data, a first stage determination unit where the multiple types of target data are identified as being above or below reference values set for each type, and a second stage determination unit where a weight value set for each status data type is attached to the determination results of the multiple types of status data of the first stage determination unit and as a whole of the multiple types of status data determined with majority logic for abnormal occurrence prediction.
摘要:
An image forming apparatus includes an acquiring unit that acquires a plurality of types of operation control information of the image forming apparatus; an index value calculating unit that calculates an index value indicating a state of the image forming apparatus based on the acquired operation control information; an abnormality judging unit that judges whether the image forming apparatus abnormality has occurred and predicts an occurrence of a failure based on the index value; and a detection pattern position detecting unit that detects a position of a detection pattern on an image carrier carrying a toner image. The detection pattern is formed on the image carrier carrying the toner image. The detection pattern position detecting unit detects the position of the detection pattern formed on the image carrier. The index value calculating unit uses information based on position detection data as the operation control information of the image forming apparatus.
摘要:
An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the image area, the behavior, and the thickness information.
摘要:
An apparatus, system, and method of predicting failure of a fixing device of an image forming apparatus are provided. Based on a plurality of sheet transfer time values of the fixing device, a first characteristic value that is an average value of the plurality of sheet transfer time values, and at least one of a second characteristics value that indicates the variance of the plurality of sheet transfer time values and a third characteristics value that indicates the maximum value of the plurality of sheet transfer time values are calculated. Using a determination result generated based on the first characteristics value and the at least one of the second and third characteristics values, failure of the fixing device is predicted.
摘要:
A first feature quantity computing unit that computes a first feature quantity representing an average of a plurality of driving loads recorded by a driving load of a fixing section recording unit of an image forming device that records the driving load acquired by a driving load acquiring unit that acquires the driving load, a second feature quantity computing unit that computes a second feature quantity representing a deviation of the plurality of the driving loads, and a diagnosis unit that performs failure diagnosis including estimation of a cause of a failure of the fixing section using the first feature quantity and the second feature quantity are used.
摘要:
A data collecting unit receives a plurality of types of status data from an image forming apparatus and stores the status data in a status database. A data generating unit generates a plurality of types of target data for determining a maintenance sign, based on the status data. A first determining unit determines whether each of the status data exceeds a predetermined reference value. A second determining unit performs weighted majority decision based on a determination result from the first determining unit and a weight value set for each of the status data, and determines whether there is a maintenance sign taking all the status data into consideration.