Image forming system, printing control method, and program

A printing control method for use in an image forming system including a printing unit which prints an image on a recording sheet, and a wrap bookbinding unit which performs wrap bookbinding of a batch of recording sheets including a plurality of document sheets on which images are printed by the printing unit, the printing control method comprising:

• detecting a thickness of a batch of recording sheets stacked on a tray of the wrap bookbinding unit;
• causing, when the detected thickness of the batch of recording sheets exceeds a binding thickness threshold value corresponding to a maximum binding number of recording sheets of the wrap bookbinding unit, the wrap bookbinding unit to perform wrap bookbinding to create one or a plurality of volumes in each of a plurality of chapters;
• causing the printing unit to print an image of relevant information, indicating a relationship of the plurality of volumes and the plurality of chapters, on a cover sheet used to wrap each volume;
• and
• determining a k-th volume binding number of recording sheets to be created for a k-th volume of the volumes in an x-th chapter of the chapters, and characters indicating a chapter number and a volume number to be printed for the k-th volume,
• wherein, each time the k-th volume binding number of recording sheets for the k-th volume is reached, the wrap bookbinding unit is caused to perform the wrap bookbinding to create the k-th volume and the printing unit is caused to print the characters indicating the chapter number and the volume number on a spine of a cover sheet for the k-th volume.

A non-transitory computer-readable recording medium storing a computer-readable program which, when executed by a computer of an image forming system, causes the computer to perform a printing control method, the image forming system including a printing unit which prints an image on a recording sheet, and a wrap bookbinding unit which performs wrap bookbinding of a batch of recording sheets including a plurality of document sheets on which images are printed by the printing unit, the printing control method comprising:

• detecting a thickness of a batch of recording sheets stacked on a tray of the wrap bookbinding unit;
• causing, when the detected thickness of the batch of recording sheets exceeds a binding thickness threshold value corresponding to a maximum binding number of recording sheets of the wrap bookbinding unit, the wrap bookbinding unit to perform wrap bookbinding to create one or a plurality of volumes in each of a plurality of chapters;
• causing the printing unit to print an image of relevant information, indicating a relationship of the plurality of volumes and the plurality of chapters, on a cover sheet used to wrap each volume;
• and
• determining a k-th volume binding number of recording sheets to be created for a k-th volume of the volumes in an x-th chapter of the chapters, and characters indicating a chapter number and a volume number to be printed for the k-th volume,
• wherein, each time the k-th volume binding number of recording sheets for the k-th volume is reached, the wrap bookbinding unit is caused to perform the wrap bookbinding to create the k-th volume and the printing unit is caused to print the characters indicating the chapter number and the volume number on a spine of a cover sheet for the k-th volume.