Note sheets, having opposite free and adhesive edges, removably attached to documents are individuated and scanned. A document-edge bearing device shifts away from a document to allow the document's edge nearest its note sheet's free edge to droop under its own weight and open a free-edge-document gap. A scanning control unit situates into the gap a note-wedging guide component of a pivotal scanning device carried on a note-targeting platform, and having a note-sheet scanner and rollers for moving a removable note sheet across the scanner, both to peel the note sheet off its document, and to scan the note sheet. In a note-sheet presence/position detecting mechanism, document-edge pressing sliders wrinkle a document, and a control-linked sensor detects a shading-difference-originating gap between the free edge of any removable note sheet, and the document to which it is attached, to determine physical presence and document-relative position of the note sheet.

An image reading apparatus according to an embodiment includes an image reading unit configured to generate reference data by reading a reference surface and to generate image data by reading a sheet. A reference unit has a reference surface. A shading correction unit determines whether a portion of the reference surface includes a contaminant based on image data generated by the image reading unit reading the portion of the reference unit. When the portion of the reference surface is determined to not include a contaminant, the shading correction unit generates reference data based on the image data generated by the image reading unit reading the portion of the reference surface determined to not include a contaminant.

An image reading apparatus includes a front-side reader, which includes a white LED configured to irradiate an original with light and a CMOS sensor configured to receive light that is reflected by the original. The front-side reader is configured to generate read data that represents a luminance value of an image on the original from the result of receiving light with the CMOS sensor. The image reading apparatus stores, in a non-volatile memory, a condition for determining whether there is a sub-scanning color shift, and uses a sub-scanning color shift detector to determine whether there is a sub-scanning color shift based on the read data obtained from the front-side reader and the condition stored in the non-volatile memory. When there is a sub-scanning color shift, the image reading apparatus corrects the sub-scanning color shift by correcting the read data with a color shift corrector.

An image reading apparatus according to an embodiment includes an image reading unit configured to generate reference data by reading a reference surface and to generate image data by reading a sheet. A reference unit has a reference surface. A shading correction unit determines whether a portion of the reference surface includes a contaminant based on image data generated by the image reading unit reading the portion of the reference unit. When the portion of the reference surface is determined to not include a contaminant, the shading correction unit generates reference data based on the image data generated by the image reading unit reading the portion of the reference surface determined to not include a contaminant.

An information processing apparatus includes: a print data acquisition unit that acquires print data; a layout information acquisition unit that acquires layout information concerning plural image forming parts that are aligned from an upstream side toward a downstream side in a moving direction of a transfer target that moves and form images of respective different colors on the transfer target; and an image information generation unit that generates pieces of image information for the respective colors used by the plural image forming parts from the print data during a generation period and generates image information used by an image forming part located on an upstream side in the moving direction more in a former half of the generation period than in a latter half of the generation period.

An image reading apparatus includes a projection portion arranged between a first reading position of a first image reading portion and a second reading position of a second image reading portion in a sheet conveyance direction. The projection portion projects from one of an upper surface of a main body unit and a lower surface of a sheet conveyer and is arranged outside an area through which a sheet on a conveyance path passes in a width direction orthogonal to the sheet conveyance direction. A gap of the conveyance path in a height direction between the upper surface of the main body unit and the lower surface of the sheet conveyer is secured by the projection portion abutting against the other of the upper surface and the lower surface outside the area.

An image reading apparatus is provided with a reader which reads a document, a transport roller which is provided on an upstream side of the reader in a document transport path in which the document is transported and transports the document to a reading position of the reader, and a controller which receives reading data of the reader and controls the transport roller, in which the controller receives the reading data from the reader to acquire a form of the document, and selects whether or not to stop driving of the transport roller based on the form.

An image reading apparatus includes a common transport route, a first and a second transport route, a first and a second image sensor, a first and a second discharge tray, and a controller. The controller executes a first reading mode including guiding the document from the common transport route to the first transport route, reading the image on the first face of the document with the first image sensor, and discharging the document to the first discharge tray, or a second reading mode including reading the image on the second face of the document with the second image sensor, guiding the document from the common transport route to the second transport route, and discharging the document to the second discharge tray, inhibits the first reading mode, upon deciding that the first discharge tray is full, and inhibits the second reading mode, upon deciding that the second discharge tray is full.

Provided is a manufacturing method of a sheet-through image reading apparatus, including a first step of preparing a contact glass, a second step of bonding, after the first step, a heat-resistant and insulative sheet-shaped material to a predetermined position on a major surface of the contact glass, as a transport guide member, a third step of executing plasma processing on the major surface of the contact glass after the second step, a fourth step of executing a fluorine coating on the major surface of the contact glass after the third step, a fifth step of sintering the contact glass after the fourth step, and a sixth step of fixing the contact glass to a casing of the image reading apparatus, after the fifth step.

An image forming system includes an image forming apparatus which forms an image on a sheet, an image reading apparatus which reads the image formed on the sheet by the image forming apparatus, and a finisher which performs a post-printing process with the sheet. The image forming system further includes: a paper path which is provided in the image reading apparatus and through which the sheet is passed; and an electricity eliminator which is arranged in the upstream side of the finisher to eliminate static electricity of the sheet, wherein the electricity eliminator applies at least one of water and charge to front and back sides of the sheet.