Image forming apparatus, post-processing apparatus, and image forming control method and program for implementing the method

An image forming apparatus that is adapted for connection with a post-processing apparatus that post processes sheets and that controls a sheet conveying speed according to the sheet thickness, the image forming apparatus comprising:

• a containing device configured to contain sheets;
• a selecting device having a display device configured to display a plurality of candidates for sheet thicknesses and configured to permit a user to select a thickness of sheets to be contained in said containing device among the plurality of candidates for the sheet thicknesses;
• a storage device configured to store first thickness-determination information used for controlling the sheet conveying speed in the post-processing apparatus with respect to each type of a plurality of the post-processing apparatuses connectable to the image forming apparatus and second thickness-determination information for controlling the sheet conveying speed in the image forming apparatus, each of the first thickness-determination information and the second thickness-determination information including threshold information for grouping the respective sheet thicknesses;
• an identifying device configured to identify the type of the post-processing apparatus connected to the image forming apparatus;
• and
• a determining device configured to determine a plurality of candidates for the sheet thicknesses to be displayed on said display device, based on the first thickness-determination information corresponding to the type of the post-processing apparatus identified by said identifying device and the second thickness-determination information.

An image forming control method for an image forming apparatus that is adapted for connection with a post-processing apparatus that post processes sheets and that controls a sheet conveying speed according to the sheet thickness and has a containing device configured to contain sheets, and a selecting device having a display device configured to display a plurality of candidates for sheet thicknesses and configured to permit a user to select a thickness of sheets to be contained in said containing device among the plurality of candidates for the sheet thicknesses, the method comprising the steps of:

• storing in a storage device first thickness-determination information used for controlling the sheet conveying speed in the post-processing apparatus with respect to each type of a plurality of the post-processing apparatuses connectable to the image forming apparatus and second thickness-determination information for controlling the sheet conveying speed in the image forming apparatus, each of the first thickness-determination information and the second thickness-determination information including threshold information for grouping the respective sheet thicknesses;
• identifying the type of the post-processing apparatus connected to the image forming apparatus;
• and
• determining a plurality of candidates for the sheet thicknesses to be displayed on the display device, based on the first thickness-determination information corresponding to the type of the post-processing apparatus identified in the identifying step and the second thickness-determination information.

A non-transitory computer-readable medium storing a computer program for causing a computer to perform an image forming control method for an image forming apparatus that is adapted for connection with a post-processing apparatus that post processes sheets and that controls a sheet conveying speed according to the sheet thickness and has a containing device configured to contain sheets, and a selecting device having a display device configured to display a plurality of candidates for sheet thicknesses and configured to permit a user to select a thickness of sheets contained in said containing device among the plurality of candidates for the sheet thicknesses, the method comprising the steps of:

• obtaining first thickness-determination information used for controlling the sheet conveying speed in the post-processing apparatus from the post-processing apparatus and second thickness-determination information for controlling the sheet conveying speed in the image forming apparatus, each of the first thickness-determination information and the second thickness-determination information including threshold information for grouping the respective sheet thicknesses;
• and
• determining a plurality of candidates for the sheet thicknesses to be displayed on the display device, based on the first thickness-determination information and the second thickness-determination information obtained in said obtaining step.

A non-transitory computer-readable medium storing a computer program for causing a computer to perform an image forming control method for an image forming apparatus that is adapted for connection with a post-processing apparatus that post processes sheets and that controls a sheet conveying speed according to the sheet thickness and has a containing device configured to contain sheets, and a selecting device having a display device configured to display a plurality of candidates for sheet thicknesses and configured to permit a user to select a thickness of sheets to be contained in said containing device among the plurality of candidates for the sheet thicknesses, the method comprising the steps of:

• storing in a storage device first thickness-determination information used for controlling the sheet conveying speed in the post-processing apparatus with respect to each type of a plurality of the post-processing apparatuses connectable to the image forming apparatus and second thickness-determination information for controlling the sheet conveying speed in the image forming apparatus, each of the first thickness-determination information and the second thickness-determination information including threshold information for grouping the respective sheet thicknesses;
• and
• for grouping the respective sheet thicknesses;
• identifying the type of post-processing apparatus connected to the image forming apparatus;
• and determining a plurality of candidates for the sheet thicknesses to be displayed on the display device, based on the first thickness-determination information corresponding to the type of the post-processing apparatus identified in the identifying step and the second thickness-determination information.

An image forming apparatus that controls an image-forming operation according to a sheet thickness and that is connected to a post-processing apparatus that post processes sheets and that controls a sheet post-processing operation according to the sheet thickness, the image forming apparatus comprising:

• a containing device configured to contain sheets;
• an obtaining device configured to obtain first thickness-threshold information used for controlling the sheet conveying speed in the post-processing apparatus from the post-processing apparatus and second thickness-threshold information for controlling the sheet conveying speed in the image forming apparatus;
• and
• a determining device configured to determine a threshold for grouping the sheet thicknesses of the sheets contained in said containing device based on the first thickness-threshold information and the second thickness-threshold information obtained by said obtaining device.