A printing system includes a printing apparatus that prints an image on a sheet, a sheet processer that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.

An image reading device includes a document tray, a linear conveyance path, a curved conveyance path, a document conveyance device, a scanning device, a length detecting device, an operation device, and a controller. A plurality of conveyance rollers are disposed at a predetermined first interval in the linear conveyance path. In the curved conveyance path, a plurality of conveyance rollers are disposed at a predetermined second interval longer than the first interval. When accepting through the operation device an instruction for conveying an original document through the curved conveyance path, the controller allows conveyance of the original document through the curved conveyance path when a length of the original document detected by the length detecting device is not shorter than the second interval or disallows conveyance of the original document through the curved conveyance path when the detected length of the original document is shorter than the second interval.

A medium transport apparatus includes a feeding section configured to nip a medium and feed the medium in a transport direction, a sensor disposed to face a side of the medium being transported in the transport direction, the sensor being configured to detect motion of the medium, and a control unit configured to stop the transport of the medium based on a detection value received from the sensor, in which during a period including a time at which a leading edge of the medium is nipped by the feeding section, the control unit continues transporting the medium irrespective of the detection value from the sensor.

An image reading device reads two types of documents, a first document having a first size and a second document having a second size larger than the first size. A controller of the device causes the first document reader to read the first document and generate image data when the operation unit accepts a command. The first document reader reads a portion of the second document and generates image data on tilt of the second document when the operation unit accepts a command. The document tilt detector detects tilt of the second document based on the image data for detecting tilt of the second document. The document transporter stops transport of the second document when the document tilt detector detects tilt of the second document. The second document reader reads the second document and generates image data when the document tilt detector detects no tilt of the second document.

A printing system includes a printing apparatus that prints an image on a sheet, a sheet processor that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.

An image forming apparatus includes a first detector, a second detector, and a determination section. The first detect detects a first skew angle of a sheet. The second detector is located downstream of the first detector and detects a second skew angle of the sheet. The determination section determines whether or not to stop conveyance of the sheet based on the first skew angle and the second skew angle.

The invention provides an image-forming apparatus that includes a printer that performs printing, and a controller that determines, on a basis of settings related to a print job, whether to execute the print job as a print job related to test printing or execute the print job as a normal print job, and causes the printer to perform printing, in which the settings related to the print job include a plurality of items, and one or more combinations of a setting of another item with respect to a setting of one item are set as recommended settings, and, when the print job includes a setting of the another item other than the recommended settings with respect to the setting of the one item, the controller determines that the print job is a print job related to test printing.

An image forming apparatus has an input portion that receives original image data, a control portion that generates output image data based on the original image data, a printing portion that performs printing based on the output image data, and a storage portion. The storage portion stores associated color information that defines colors associated with a plurality of prescribed processes respectively. When generating the output image data, the control portion, if the original image data includes a marked region, performs, out of the plurality of processes, the process associated with the color of the marked region.

An information processing apparatus includes a setting unit, a detector and a controller. The setting unit sets setting information associating a registered image obtained by reading an image with control information indicating whether input image data is to be stored or not. The detector detects the registered image from the input image data. The controller controls whether or not the input image data including the registered image is stored in a storage based on the setting information.

An image processing apparatus includes a platen on which a document to be read is placed, an image input unit configured to read, at a time, one or a plurality of documents placed on the platen, an individual image extraction unit configured to extract individual images of the one or the plurality of documents read at a time, an individual image location judgment unit configured to determine whether the extracted individual images are each located within one of areas set in a reading area of the platen depending on the number of documents to be read, and an individual image selection unit configured to, in a case where one or a plurality of the extracted individual images are located within a particular area, select one individual image as an image to be captured in the area based on a predetermined selection criterion.