A method for determining a media size of a target scanned on the platen of the flatbed scanner using a fiducial placed on a backer of the flatbed scanner at a predetermined location. The fiducial is comprised of a plurality of objects, either placed in a predetermined pattern or randomly within a fiducial frame. A target is placed on the platen of the flatbed scanner and scanned along with the backer. The scanned image data of the target and backer is searched for the fiducial image. When the fiducial image is found, the media is selected to be of a first target type of a first media size, and, when the fiducial is not found the target is selected to be of a second target type of a second media size greater than the first media size.

Illustration image data drawn correspondingly to reading of an adjustment chart are memorized in a memory section, an adjustment chart is formed in a image mode in an image forming section, adjustment image data produced by reading the adjustment chart in an image reading section are analyzed, illustration image data corresponding to an analysis result of the adjustment image data are selected at the time of adjusting the image forming section based on the analysis result, and display data of the illustration image data are produced.

In accordance with one embodiment, a sheet feed apparatus comprises a sheet housing section, a guide, an optical sensor, markers and a determination section. The sheet housing section houses sheets. The guide is arranged at a position corresponding to the size of the sheet housed in the sheet housing section. The detection position of the optical sensor varies by interlocking with the guide. The markers, which have different image features corresponding to the sizes, are arranged at the detection position of the optical sensor pre-determined according to the size of the sheet. The determination section determines the size of the sheet housed in the sheet housing section based on a detection result of the optical sensor.

An image reading apparatus further includes a discrimination unit which discriminates double feeding of a document from a carrier sheet, based on a double feeding detecting sensor (double feeding detecting unit) which detects double feeding of a document, a first detection result (section of L1) which is obtained when the double feeding detecting sensor detects a bonding portion of the carrier sheet, and a second detection result (double feeding detection value which is lower than second threshold value) which is obtained when the double feeding detecting sensor detects double feeding.

An image processing apparatus includes: an image processing unit configured to execute image processing including skew correction that deforms an image so as to cancel distortion on the image; and a control unit configured to control the image processing on the image processing unit, wherein, in a case where a margin amount available for correcting the distortion is defined as a first correction margin amount and a margin amount used for correction other than skew correction is defined as a second correction margin amount, the control unit calculates a third correction margin amount obtained by subtracting the second correction margin amount from the first correction margin amount, and controls such that the image processing unit executes the image processing including the skew correction toward a first image and a second image such that the skew correction amount to be corrected falls within a range of the third correction margin amount.

A recording device includes a reading device including a reading unit that reads an image of a document, a placement unit at which a medium is placed, and a recording unit that performs recording on the medium transported from the placement unit. A size of the medium is determined by emitting light from the reading unit toward a detection target and calculating a position thereof, the position of the detection target changing in accordance with the size of the medium placed at the placement unit.

An image reading apparatus includes a sensor, a light source, and an image-capture controller. The sensor has a sensitivity area that is in a predetermined wavelength band, and acquires an image signal in accordance with light from sheet. The light source has a first light emitting unit that emits first light having a wavelength within the sensitivity area of the sensor, and a second light emitting unit that emits second light that has a wavelength which is outside of the sensitivity area of the sensor and that excites a fluorophore applied on the sheet. The image-capture controller irradiates the sheet with the first light and the second light to acquire a first image signal using the sensor, and irradiates, after acquiring the first image signal, the sheet with only the second light to acquire a second image signal using the sensor.

A printing apparatus capable of adding number information differing from copy set to copy set, to a printing target image includes a judging unit configured to judge whether to add user information indicating a current user to a printing target image, and a determination unit configured to determine a position to which the number information is to be added, based on a result of the judgment performed by the judging unit.

A printing apparatus capable of adding information to a printing target image includes an addition unit configured to add the information, a setting unit configured to set an area to which the information is added based on a user operation, a specification unit configured to specify a length of a sheet used for printing in a sheet conveyance direction, and a control unit configured to control, in a case where the length of the sheet in the sheet conveyance direction is not specified, the addition unit to add the information into a leading end side area in the sheet conveyance direction even if a trailing end side area is set by the setting unit as the area to which the information is added.

An image reading device includes a contact glass, a document transport device, a first reading module, a second reading module, a opposite roller, and roller holders. The opposite roller transports a document while keeping it in close contact with an image reading surface of the second reading module arranged inside the document transport device. The roller holders rotatably support the opposite roller, and on their faces facing the second reading module, a pair of patterns for detection is provided to detect the inclination of the opposite roller. The patterns for detection are each formed to be increasingly wide toward a first end side in the axial direction upstream from an intersection in a central part thereof in the document transport direction, and increasingly wide toward a second end side opposite from the first end side downward from the intersection in the document transport direction.