According to one embodiment, a system for providing error assistance for a device is disclosed. The error assistance is provided to an optical head-mounted display (OHMD) of a user. The system includes a server configured to receive an input, including one or more identifiers for the device, from the OHMD of the user or a mobile device of the user. The identifiers may include at least one of a serial number of the device, an identifier scanned from a tag of the device, and an error code identifying the device error. The server identifies the device and device error based on the identifiers. The server determines instructions for fixing the device error and generates an augmented display to provide on the OHMD of the user. The augmented display includes an image, icon, text, audio, or video, representative of a part of the device or an instruction for repairing the device.

According to one embodiment, an image reading apparatus includes: a first illumination device for irradiating light at a first angle onto a sheet that is being conveyed; a second illumination device for irradiating light at a second angle onto the sheet that is being conveyed; illumination controllers for switching between a first irradiation state in which light is irradiated from the first illumination unit and the second illumination unit onto the sheet and a second irradiation state in which light is irradiated from only either the first illumination device or the second illumination device to the sheet; an imaging device for acquiring a first comparable image in the first irradiation state and for acquiring a second comparable image in the second irradiation state; and a defect detector for detecting a defect of the sheet based on the difference between the first comparable image and the second comparable image.

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 maintenance system includes an image forming apparatus that performs image formation by a setting depending on the replacement part using a replaceably configured replacement part and a portable terminal that performs near field communication with the portable terminal. The portable terminal includes an image reading part that reads part information of the replacement part from a printed part affixed to the replacement part and a near filed communication part that transmits the part information read by the image reading part via the near filed communication. The image forming apparatus includes a non-contact IC tag in which the part information is written based on power generated from the near filed communication and an reflection processing part that reads the part information from the IC tag at the time of power on and reflects the part information in the setting.

An inspection apparatus which inspects an image determines a type of a printing error based on characteristics of a place where the printing error has occurred, and controls a printing apparatus according to the determined type of printing error.

An image forming apparatus includes a state management unit that shifts an authentication state from a non-login state to a login state, a storage unit that stores setting information, and a data management unit that, in a case where a free space of the storage unit is less than a threshold value, deletes the setting information stored in the storage unit at a timing of shifting from the non-login state to the login state and secure a free space greater than or equal to the threshold value in the storage unit.

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.

An information processing system includes a first and second information processing systems respectively including first and second apparatuses, and a third information processing system storing history information of the first apparatus and implementing analyzing the history information to acquire a degree of influence for an item included in the history information corresponding to a fault in the first apparatus, and generating a fault prediction logic of predicting a fault in the first apparatus using the item having a relatively high degree of influence and a value of a case where the fault occurs in the first apparatus based on a result of the analysis, and building the generated fault prediction logic into the first and second apparatuses, the first and second information processing system monitoring the history information, and detecting a state of matching a content of the built-in fault prediction logic.

The detailed technology relates to optical sensors, and more particularly relates to characterizing local behaviors of a sensor, and using such characterization information in a sensor-based system. In a particular arrangement, output signals produced from each of plural sensing elements in a 2D optical sensor are checked to determine whether they tend to differ from output signals produced by one or more neighboring sensing elementswhen combined across plural captured image frames. The results are stored in an associated memory, and can be consulted in determining how image data captured from the sensor should be used. The technology is particularly illustrated in the context of a watermark decoder for a cell phone camera. A variety of other features and arrangements are also detailed.

According to the present embodiment, an image-reading apparatus determines any one or both of the type of document and the shape of a document, selects any one or both of an appropriate document tilt detection method and an appropriate document position detection method according to any one or both of the determined type of document and the determined shape of a document, and detects any one or both of the tilt of the document and the position of the document by the selected detection method.