Disclosed herein are a method and apparatus for performing print jobs in a printing system including a host device and a printing device. The method of performing print jobs in a printing system including a host device and a printing device includes: requesting printing while transmitting print data and identifications (IDs) corresponding to one or more print jobs, included in a job list, to the printing device; if an identification (ID) corresponding to at least one completed print job is received from the printing device, updating the job list by deleting a print job corresponding to the received ID from the job list; if an error has occurred in the printing system, determining whether the error has been resolved; and if it is determined that the error has been resolved, resuming printing.

A processing apparatus includes: a processor configured to: acquire, in a case where plural processes having different required times and accompanied by operating sounds are continuously executed, data representing a collection result of the operating sounds; derive the number of pieces of data in a case where the data is subjected to frequency analysis from an operating condition; reduce analysis result data of the derived number of pieces of data after the frequency analysis to the number of pieces of data with which a detection process of an abnormal sound is performable within a processing time for processing a next processing target; and detect the abnormal sound by using the reduced analysis result data.

The recording device includes an upstream transport roller pair capable of transporting a medium, a recording head configured to record an image by discharging ink at a predetermined timing on the medium transported downstream in a D1 direction by a predetermined transport amount by the upstream transport roller pair while moving in a Y-axis direction intersecting the D1 direction, an image capturing unit configured to read the image recorded on the medium by the recording head, and a control unit, wherein the control unit has a function of performing maintenance for a discharge failure of the ink, a correction of the transport amount, and a correction of the discharge timing of the ink based on the reading result of the image read by the image capturing unit.

A virtual execution device includes a hardware processor, the hardware processor forming a virtual device by simulating an image forming apparatus in operation, in the case where a predetermined allowing condition is unsatisfied by an operation state of the image forming apparatus, acquiring a plurality of respective jobs that have been externally received by the image forming apparatus before the allowing condition becomes unsatisfied by the operation state of the image forming apparatus as reference jobs, selecting one or more reference jobs as exclusion jobs from among the plurality of acquired reference jobs, causing the virtual device to process process subject jobs that are not the one or more selected exclusion jobs among the plurality of acquired reference jobs, and in the case where the allowing condition is satisfied by an operation state of the virtual device, specifying the exclusion jobs as cause jobs that have caused errors in the image forming apparatus.

An image forming apparatus combines a plurality of sub-movies representing operation procedures to be performed to perform maintenance on the image forming apparatus and plays the combined sub-movies sequentially as one movie. In response to stopping the movie being played, the image forming apparatus displays a replay mark for use to issue a command to replay the movie from the beginning of a sub-movie corresponding to a position where the movie is stopped.

A failure prediction system includes: one or more apparatuses; and a server that cooperates with the apparatuses to predict occurrence of a predetermined failure in a certain apparatus among the apparatuses, the server including a hardware processor that: collects data for predicting the occurrence of the failure, from the apparatuses; analyzes the collected data and obtains an important-feature amount for making a predetermined standard prediction model adapt to the certain apparatus; and transmits the obtained important-feature amount to the certain apparatus, and the certain apparatus including a hardware processor that: transmits the data of the certain apparatus to the server; receives the important-feature amount from the server; adjusts the standard prediction model with the received important-feature amount; and predicts the occurrence of the failure with application of the data of the certain apparatus to the adjusted prediction model.

An image forming apparatus includes an image forming unit configured to perform a printing process of forming an image on a print medium based on print data, and a processor. The processor is configured to determine whether or not the printing process has completed based on remaining print data to be printed, when the print medium is removed from a paper discharge tray in which the print medium on which the image is formed by the image forming unit is placed, and to cause a warning to be output upon determining that the printing process has not completed based on the remaining print data to be printed.

A manipulation panel that is a user interface includes a display unit that displays a screen, a touch panel that detects a tap performed to the display unit, and an abnormality detector that detects a situation, in which a message is displayed on the display unit, until the touch panel detects a second tap constituting a double tap since detecting a first tap. Manipulation panel displays a warning message about the situation detected by the abnormality detector on the display unit after the touch panel detects the second tap.

An image processing apparatus performs: acquiring instruction data including notification data and location information indicative of a location of next instruction data; controlling at least one of a display and an image processor to perform an operation instructed by the instruction data acquired most recently; when controlling the at least one of the display and the image processor, connecting a first communication interface with a mobile terminal within a particular distance range from the image processing apparatus, in accordance with a near-field wireless communication protocol; when controlling, transmitting the notification data extracted from the instruction data acquired most recently, to the mobile terminal through the first communication interface, the notification data being data for specifying an operation to be performed by the mobile terminal; and acquiring the next instruction data based on the location information extracted from the instruction data acquired most recently.

An image forming apparatus is provided with a storage unit for storing setting information including at least a size of a substitute recording medium, and a processing unit for executing a print instruction by automatically changing a size of a recording medium to be used to the size of the substitute recording medium based on the setting information stored in the storage means, when the size of the recording medium specified by the print instruction is not available.