Patent ID: 8827416

Claim:
A printing apparatus, comprising: a receiver configured to receive print data from an information processor; a printing device configured to conduct printing on a sheet based on the print data received by the receiver; a tray configured to hold the sheet; a storage device configured to store each of a plurality of sheet sizes and a corresponding one type of a plurality of types in association with each other, the plurality of types comprising an identified type and a detected type; and a controller comprising: an identifier configured to identify, based on the print data received by the receiver, a sheet size of a sheet on which the printing device is to conduct the printing based on the print data; a detector configured to detect a sheet size of a sheet placed on the tray; a determiner configured to, when the sheet size identified by the identifier and the sheet size detected by the detector differ from each other, determine whether the identified type associated with the sheet size identified by the identifier and the detected type associated with the sheet size detected by the detector are identical to each other; and a printing controller configured to, when the determiner determines that the identified type and the detected type are identical to each other, one of reduce and enlarge a size of an image based on the print data received by the receiver, based on the sheet size detected by the detector, and control the printing device to conduct printing of the image whose size has been one of reduced and enlarged by the printing controller, the printing controller being configured to, when the determiner determines that the identified type and the detected type are different from each other, restrict conduct of the printing by the printing device based on the print data received by the receiver.