Image forming apparatus and method of controlling image forming apparatus

A method for an image forming apparatus including a plurality of sheet feeding cassettes configured to contain sheets, the method comprising:

• measuring, as a color measurement, a color of an image printed on a sheet;
• performing control, in a case where a predetermined condition is satisfied during execution of a print job to print image data, to execute interruption processing of a correction job to print a correction patch;
• and
• performing correction processing on an image data based on color measurement data on the correction patch obtained by measuring the color of the image printed on the sheet,
• wherein, in a case where the correction patch is to be printed on a sheet, performing control includes causing the sheet on which the correction patch is to be printed to be fed from, among the plurality of sheet feeding cassettes, a sheet feeding cassette that is the same as a sheet feeding cassette used for printing a page immediately before the interruption processing.

An image forming apparatus including a plurality of sheet feeding cassettes configured to contain sheets, the image forming apparatus comprising:

• one or more controllers including one or more processors and one or more memories, the one or more controllers configured to:
• executing a print job to print image data in a case where an image formation print request has been received,
• determining, during execution of the print job, whether a predetermined condition is satisfied, and
• executing, in a case where the predetermined condition is satisfied, interruption processing of a correction job to print a correction patch,
• wherein the interruption processing includes:
• obtaining color measurement data of the correction patch image printed on a sheet,
• performing correction processing on an image data based on color measurement data on the correction patch obtained as the color measurement data, and
• causing, in a case where the correction patch is to be printed on a correction patch sheet, the correction patch sheet on which the correction patch is to be printed to be fed from, among the plurality of sheet feeding cassettes and without changing a printing condition, a sheet feeding cassette that is the same as a sheet feeding cassette that contained a sheet used for printing a page immediately before the interruption processing.

An image forming apparatus including a plurality of sheet feeding cassettes configured to contain sheets, the image forming apparatus comprising:

• one or more controllers including one or more processors and one or more memories, the one or more controllers being configured to perform operations including:
• executing a print job,
• performing processing to print images on a plurality of sheets in accordance with execution of the print job,
• setting an interruption print interval for gradation correction,
• inserting a sheet for printing an image for gradation correction between the plurality of sheets in accordance with the set interruption print interval,
• performing processing to print the image for gradation correction on the inserted sheet,
• performing processing to read the printed image for gradation correction, and
• performing gradation correction based on the read image for gradation correction,
• wherein a type of the sheet to be inserted is the same as a type of a sheet to be used for the print job for printing a page immediately before the insertion.