Image forming apparatus, image forming system, and non-transitory computer readable medium

An image forming apparatus comprising:

• an image memory that stores replacement image data representing a replacement image;
• an image receiving unit that receives image data transmitted from the outside;
• an image determination unit that determines whether the received-image data received by the image receiving unit includes to-be-replaced image data representing a to-be-replaced image that needs to be replaced;
• an image search unit that searches, in a case where the image determination unit determines that the received-image data includes the to-be-replaced image data, the replacement image data stored in the image memory for replacement image data corresponding to the to-be-replaced image data;
• an image forming unit that forms, on a paper sheet, an image based on image data;
• and
• an image converter that converts, in a case where the replacement image data corresponding to the to-be-replaced image data included in the received-image data is detected by the image search unit, the received-image data into to-be-output image data in which the to-be-replaced image data is replaced with the replacement image data corresponding to the to-be-replaced image data, and causes the image forming unit to form an image based on the to-be-output image data.