An image processing apparatus comprising: an image processing device configured to perform an image reading operation of reading an image of the document; a reader configured to read, from a recording medium positioned in proximity to or in contact with the reader, identification information for the recording medium; a storage device configured to store setting information for image reading operations and identification information in association with each other; a display; and a controller configured to: in response to the recording medium being brought in proximity to or in contact with the reader, control the reader to read the identification information from the recording medium; in response to the identification information being read by the reader, acquire, from the storage device, the setting information associated with the read identification information; characterized in that the image processing apparatus additionally comprises: a sensor configured to detect a document set on the image processing apparatus; and the controller is additionally configured to: in response to acquiring the setting information, determine whether a document is set on the image processing apparatus, based on the detection signal from the sensor; when determining that a document is set on the image processing apparatus, control the image processing device to perform the image reading operation in accordance with the acquired setting information; and when determining that no document is set on the image processing apparatus, control the display to display the acquired setting information. an image processing device configured to perform an image reading operation of reading an image of the document; a reader configured to read, from a recording medium positioned in proximity to or in contact with the reader, identification information for the recording medium; a storage device configured to store setting information for image reading operations and identification information in association with each other; a display; and a controller configured to: in response to the recording medium being brought in proximity to or in contact with the reader, control the reader to read the identification information from the recording medium; in response to the identification information being read by the reader, acquire, from the storage device, the setting information associated with the read identification information; in response to the recording medium being brought in proximity to or in contact with the reader, control the reader to read the identification information from the recording medium; in response to the identification information being read by the reader, acquire, from the storage device, the setting information associated with the read identification information; characterized in that the image processing apparatus additionally comprises: a sensor configured to detect a document set on the image processing apparatus; and the controller is additionally configured to: in response to acquiring the setting information, determine whether a document is set on the image processing apparatus, based on the detection signal from the sensor; a sensor configured to detect a document set on the image processing apparatus; and the controller is additionally configured to: in response to acquiring the setting information, determine whether a document is set on the image processing apparatus, based on the detection signal from the sensor; when determining that a document is set on the image processing apparatus, control the image processing device to perform the image reading operation in accordance with the acquired setting information; and when determining that no document is set on the image processing apparatus, control the display to display the acquired setting information.