A printing apparatus including a printing unit that prints an image on a print sheet by executing a print job, sheet feeders in which cut paper and roll paper each as the print sheet are selectably set for feeding to the printing unit, respectively, and a conveying unit that conveys the print sheet from the sheet feeding unit to the printing unit. In a case where a width of cut paper as a print sheet to be used in execution of the print job is larger than a width of the roll paper selected in the sheet feeder, a confirmation dialog is displayed to enable a selection operation for prompting a user to select one of execution of the print job and stoppage of execution of the print job.

An image reading apparatus includes a conveyance portion configured to convey a sheet on which an image has been formed, a reading unit configured to read the image formed on the sheet being conveyed by the conveyance portion, a transparent member provided between the reading unit and a position at which the conveyance portion conveys the sheet, a reference member, which is provided to the transparent member, and is to be read by the reading unit, support members configured to support the transparent member at both ends in a direction intersecting a conveyance direction of the sheet being conveyed by the conveyance portion, and a moving portion configured to move the support members.