Image forming apparatus and computer readable medium

An image forming apparatus comprising:

• an image forming processing management unit that manages image forming processing on a first side of a plane-shaped record medium;
• a communication unit that establish a communication between the image forming apparatus and the other image forming apparatus configured to form an image on a second side of the plane-shaped recording medium, a model of the image forming apparatus being different from a model of the other image forming apparatus;
• a first acquiring unit that acquires first settable region information on the plane-shaped recording medium in the other image forming apparatus, the first settable region information indicating a first settable region on which a registration mark is settable;
• a determination unit that determines a first region based on the first settable region information, the first region being a region on which the registration mark is formable in a cascade printing system including the image forming apparatus and the other image forming apparatus;
• a second acquiring unit that acquires second settable region information on the plane-shaped recording medium, the second settable region information indicating a second settable region on which the registration mark is formable in the plane-shaped recording medium;
• and
• a comparison unit that compare the first region with the second settable region.

A computer readable medium storing a program causing a computer to execute a process for image formation in a cascade printing system including an image forming apparatus and other image forming apparatus, the process comprising:

• acquiring first settable region information on a plane-shaped recording medium in the other image forming apparatus, the first settable region information indicating a first settable region on which a registration mark is settable;
• determining a first region based on the first settable region information, the first region being a region on which the registration mark is formable in the cascade printing system;
• acquiring second settable region information on the plane-shaped recording medium, the second settable region information indicating a second settable region on which the registration mark is formable in the plane-shaped recording medium;
• and
• providing, when the second settable region is not involved in the first region, invalidity information indicating the registration mark is possible invalid.