It is possible to read a document at an optimal speed according to an operation mode selected by a user while improving productivity at a low cost, without forcing the user to perform a complicated operation for changing a document reading speed. A method for controlling a reading unit to read a document with a first reading resolution in a case where a reading resolution is the first reading resolution, to read a document with a second reading resolution in a case where the reading resolution is the second reading resolution smaller than the first reading resolution and a predetermined mode is not set, and to read a document with the first reading resolution in a case where the reading resolution is the second reading resolution smaller than the first reading resolution and the predetermined mode is set.

An image reading device includes a contact glass, an automatic document feeder, a first reading module, a second reading module, a first white reference member, a second white reference member, and a control portion. The first reading module reads the image on the front side of a stationary document placed on the contact glass and a conveyed document conveyed to an automatic reading position by the automatic document feeder. The second reading module is disposed in the automatic document feeder and reads the image on the back side of a conveyed document. When performing a duplex reading process to read the images on the front and back sides of the conveyed document simultaneously, the control portion, after the duplex reading process is requested, performs offset adjustment, gain adjustment, and acquisition of back-side black reference data and back-side white reference data for the second reading module.

A reading device includes a conveyance control section for controlling document conveyance. In a case of double-sided reading of a document and with a cutout document mode applied, the conveyance control section stops a pair of reverse-rotation rollers at a time point when the document has been conveyed by a distance resulting from adding an additional distance, which is predetermined or determined based on a recognized cutout width in the document conveyance direction, to a reference distance since a time point of passage of a rear end of a document-detecting detection part, and thereafter start reverse rotation of the pair of reverse-rotation rollers.

An image forming apparatus includes: an image processor configured to perform first image processing on image data having a first resolution and to add tag data to a target pixel where second image processing is to be performed; a resolution converter configured to convert the image data into image data having a second resolution higher than the first resolution, and to perform the second image processing based on arrangement of the image data having the first resolution and the tag data; a pulse generator configured to generate an on-off modulation signal and an application-current switching signal in accordance with the image data having undergone the second image processing; and a light source driver configured to drive the light source in accordance with a current setting value output from an application current setter depending on the application-current switching signal and the on-off modulation signal.

An image reading apparatus includes a reading unit that reads an original document that is located at plural locations different in a direction of a depth of field of a photodetector of a sensor module, and a fixing unit that fixes the sensor module in position such that a focal point of the photodetector is located within a difference between a minimum distance and a maximum distance from a light incident surface of the photodetector to the original document.

An image processing apparatus, which has an input unit configured to input image data and which is communicably connected to an external apparatus via a network, includes an obtaining unit configured to obtain a document with a predetermined form that includes a request for input of image data, via the network from the external apparatus; a display unit configured to display, in the event of displaying a screen corresponding to the document obtained by the obtaining unit, a screen including a display object based on the predetermined form, the display object to instruct inputting of image data by the input unit; a determining unit configured to determine whether or not to display the display object on the display unit; and a control unit configured to control the display of the display object by the display unit, according to determination results of the determining unit.

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 image processing apparatus includes: a document conveyor that conveys a document; an image reader that reads an image of the conveyed document; at least one main memory; a data transfer circuit; and one or more controllers, whereas the controllers determine whether to read an image of each page in a first reading mode or a second reading mode, the first reading mode being a mode in which conveyance of the next document is started before reading of an image of a previous page is completed, the second reading mode being a mode in which conveyance of the next document starts after reading of the document of a previous page is completed, and when there is a possibility that preparation regarding image data transfer of the next page is not completed during reading in the first reading mode, the first reading mode is switched to the second reading mode.

An image reading apparatus includes a transport unit which transports a document, and reading units which read an image of the document which is transported. It is assumed that an operation of reading an image when specific setting information is not input to a control device of the image reading apparatus is set to a first reading mode, and an operation of reading an image when specific setting information is input to the control device is set to a second reading mode. In this case, in the second reading mode, image data of an image with a resolution which is equal to that in the first reading mode is generated, while causing the reading units to read an image from a document which is transported by the transport device at a lower speed than that in the first reading mode.

An image forming system includes an image forming apparatus that includes an image forming part to form an image on a recording medium, a sheet container to contain the recording medium, a sheet feeder to feed the recording medium from the sheet container toward the image forming part, and a controller to switch speeds of conveyance of the recording medium conveyed by the image forming part and the sheet feeder between high speed sheet conveyance and low speed sheet conveyance. The image forming apparatus continuously forms the image on multiple recording media in a continuous printing mode. The controller adjusts a printing distance in the continuous printing mode between a trailing end of a preceding recording medium of the recording media and a leading end of a subsequent recording medium in the low speed sheet conveyance to be greater than the printing distance in the high speed sheet conveyance.