An image-reading device, such as optical code readers used in retail environments to scan objects, is configured to select from various operational modes. The operational modes are selected based on an application of the image-reading device, such as optical code identification or image recognition. Red, white, and other color light sources are activated in patterns corresponding to an illumination sequence of the selected operational mode, while imagers are activated to capture an image based on an exposure pattern of the selected operational mode. Further, a repeating series of light pulses having different portions of light is provided. Various imagers are configured to capture images over one of the portions. This allows an operator to perceive one continuous light pattern, yet allows various imagers to capture an image under different light conditions used for different applications of the image-reading device.

An image forming apparatus includes an image forming unit, a registration roller pair, an upstream roller pair, a detection unit, a driving device, a control unit. During execution of the accuracy priority mode, when a time from start of a rotation of the registration roller pair to detection of a leading edge of a sheet by the detection unit is a first time, a time from the detection of the leading edge to reach of a conveyance speed to the second speed is a second time, and, when a time from the start of the rotation to the detection of the leading edge is a third time, the time from the detection of the leading edge to the reach of the conveyance speed to the second speed is a fourth time, the third time is longer than the first time and the fourth time is shorter than the second time.

A sheet feeding sub tray is detachably attachable to a sheet loading stand of a sheet conveying device that includes a setting reference part on one end side of the sheet loading stand in a sheet width direction. The sheet feeding sub tray includes a small-size setting reference part disposed at a position closer to a center of the sheet loading stand in the sheet width direction than the setting reference part in a state in which the sheet feeding sub tray is installed to the sheet loading stand.

An image forming device includes: an image forming unit that forms an image on a transfer medium; and a controller that controls multiple image readers capable of performing image reading for the same surface of the transfer medium, and acquires reading results from the image readers. The controller is capable of performing failure/no-failure determination for the image on the transfer medium based on the reading results, of switching image reading by the multiple image readers between reading by a first number of image readers and reading by a second number of image readers, the second number being smaller than the first number, and of enabling, while the second number of image readers perform reading, at least one of the other image readers to execute a maintenance operation for the at least one of the other image readers.

In accordance with an embodiment, an image forming apparatus comprises a reading section, a gradation conversion section and an image processing section. The reading section positioned at a back surface of a sheet which is a reading object is provided with a back surface part having a predetermined color at the back surface side of the sheet to read at least one surface of the sheet by using the back surface part as a background. The gradation conversion section executes a gradation conversion processing of enlarging a level difference in brightness at a highlight side on image data read by the reading section. The image processing section identifies an area of the sheet part and an area of the back surface part in the image data based on the image data to which the gradation conversion processing is executed.

An information processing apparatus includes an acquisition unit and an output unit. The acquisition unit acquires a read image obtained by an image reading unit by reading at least a formation portion of a document to which a code image has been affixed, the code image being formed. The output unit outputs at least one of a recommended formation condition, which is a recommended condition used when the code image is formed on the document, and a recommended reading condition, which is a recommended condition used when the image reading unit reads the formation portion, on the basis of the read image acquired by the acquisition unit.

An information processing apparatus includes a mode setting unit in which a value indicating whether a scanning device is for simplex scanning or duplex scanning is set up, an interface unit that controls whether to enable signal exchange with an external memory based on the value set up in the mode setting unit, and a transfer unit that retrieves image data from the external memory and transfers the image data to an image processing unit. When the value in the mode setting unit indicates that the scanning device is for duplex scanning, the interface unit enables signal exchange with the external memory, and the transfer unit transfers the image data retrieved from the external memory to the image processing unit. When the value in the mode setting unit indicates that the scanning device is for simplex scanning, the interface unit prohibits signal exchange with the external memory.

According to one embodiment, an information processing method includes instructing a multifunction peripheral performing scanning and printing to perform setting regarding scanning, transmitting a scan signal for performing scanning to the multifunction peripheral, instructing the multifunction peripheral to perform setting regarding printing, and transmitting a print signal for printing a scan image obtained through scanning to the multifunction peripheral.

A printing machine includes a scanning unit, a storing unit, a determination section, and an editing section. The scanning unit reads a set of original images from an original composed of a plurality of pages and reads a set of editing images from an original-for-editing for editing the original. The storing unit stores the read set of original images and the read set of editing images in units of pages. When an editing mode is set, the determination section determines whether or not there are original images that correspond to a first editing image which is a first page and a last editing image which is a last page of the original-for-editing stored in the storing unit, among the set of original images stored in the storing unit. The editing section edits the set of original images using the set of editing images based on a result of the determination.

To make it possible to perform diagnosis of a part fault with accuracy by correctly grasping the periodicity of an image defect in a case of double-sided printing. The periodicity of a defect is determined by performing processing that is in accordance with an operation mode in a case where double-sided printing is performed and which achieves consistency between page order in a case where printing is performed in the printing unit and page order in a case where reading is performed in the reading unit.