A scanner includes a transport mechanism that continuously transports a plurality of documents, a sensor, a control unit that performs correction of a read image which the sensor reads by using a correction value, a calculation unit that calculates the correction value based on a result from which the sensor reads a reference region between the documents, and a storage unit that sequentially stores the correction value in any of a plurality of storage regions, in which the control unit switches the storage region where the correction value used for the correction is read out to the storage region where the calculated correction value is stored, if storing of the calculated correction value is completed.

A method is provided for checking an image inspection system having a camera system with a camera, an illumination apparatus for targeted illumination of a printing substrate, an image processing computer, and a main computer, for quality control of products of a printing substrate processing machine by using the main computer. A reference image is entered and transmitted to the main computer, a current printing image recorded by the camera system is transmitted to the image processing computer, a partial image in a suitable region of the current printing image, not being printed with printing image data, is selected in the image processing computer, the partial image is analyzed by comparison with the reference image in the image processing computer, and the inspection system is assessed based on the analysis of the partial image by the main computer and any defects of the inspection system being found are indicated.

A method for inferring user activity statistics includes receiving job logs of a device infrastructure. Each job log including job information for a job performed for one of a set of users by one of a plurality of shared devices. A job descriptor is generated for each job based on the job log. The job is assigned to one of a set of defined job types based on the job descriptor. An activity matrix is composed where activity of each user for each of a plurality of time periods is represented as a fixed-length vector representing at least some of the job types. Each index of the vector is derived from a count of one job type for the user in that time period. The activity matrix is decomposed into first and second factor matrices to minimize an overall reconstruction error. User activity statistics are output based on the decomposition.

An image inspection system includes a processor and an inspection execution unit that performs an image inspection of a printed matter, in which the processor is configured to acquire first position information that is information on a position of the image inspection set in image data and to acquire second position information that is information on positions of the respective image data in data for printing in which the plural image data are arranged, and the inspection execution unit performs the image inspection of a printed matter on which the data for printing are printed using the first position information and the second position information.

Temperature of a printing medium 110 is sufficiently decreased by stopping the printing medium 110 in a discharge path, conveying the printing medium at a low speed, switching a conveyance path, or the like. If the temperature of the printing medium 110 can be sufficiently decreased, the thermochromism phenomenon is suppressed. As a result, it is possible to provide an image forming apparatus capable of achieving highly accurate color matching and color stability.

A sound diagnosis system includes: a setting unit configured to set a threshold for each of a plurality of time sections, based on a sound wave level in each of the plurality of time sections of a plurality of first sound data classified in a first group; and a determination unit configured to determine whether or not an abnormal sound is generated by calculating a comparison value for each of the plurality of time sections based on a sound wave level in each of the plurality of time sections of one or more second sound data classified in the first group, and comparing the comparison value for each of the plurality of time sections with the threshold value of the corresponding time section of the first group, the threshold value being set by the setting unit.

An image forming apparatus for forming images to a medium, includes an apparatus housing; a temperature detection unit for detecting a temperature of a surrounding of the apparatus housing; a dehumidifying unit for dehumidifying an interior surrounded by the apparatus housing; and a dehumidifying decision unit for operating the dehumidifying unit based on a change of the detected temperature at the temperature detection unit, to certainly remove dew condensation

Temperature of a printing medium 110 is sufficiently decreased by stopping the printing medium 110 in a discharge path, conveying the printing medium at a low speed, switching a conveyance path, or the like. If the temperature of the printing medium 110 can be sufficiently decreased, the thermochromism phenomenon is suppressed. As a result, it is possible to provide an image forming apparatus capable of achieving highly accurate color matching and color stability.

A managing server accepts an instruction of a message intended to be displayed on a screen of an image processing apparatus from a user, and generates page information including the message and first instruction information corresponding to the accepted instruction. The image processing apparatus periodically performs a first inquiry about instruction information for the image processing apparatus to the managing server, displays, in response to a notification based on the first instruction information from the managing server, a message corresponding to the notification in a status display area of a displaying unit, acquires the page information including the message related to the first instruction information from the managing server, and displays the acquired page information on the displaying unit.

A printing system includes: a printer that prints an arbitrary printed product on a printing medium; and a colorimeter that measures a color of the printed product, in which the printer includes a printing part, and a colorimetry controller that causes the printing part to print, based on information on the printed product, a measurement patch to be used for measurement of stabilization of a color material of the printed product and the printed product on the printing medium, and the colorimeter includes a colorimetry part, and a colorimetry controller that causes the colorimetry part to measure the color of the measurement patch and determines, based on an amount of change in the color of the measurement patch, whether the color material of the printed product has been stabilized.