Liquid discharge apparatus, control method for correcting liquid discharge apparatus, and recording medium

A liquid discharge apparatus for image forming on a recording medium, the liquid discharge apparatus comprising:

• first image obtaining circuitry configured to obtain first image data for a trial printing;
• second image generating circuitry configured to generate second image data for the trial printing by adding predetermined figure data to the first image data;
• correcting circuitry configured to generate third image data for a production printing by correcting, for each of pages, the first image data based on both the second image data and read image data obtained by reading an image formed on the recording medium based on the second image data;
• a liquid discharger configured to discharge liquid onto the recording medium based on the third image data;
• and
• correction value obtaining circuitry configured to obtain a correction value for correcting either the first image data or the second image data based on an amount of deformation of the recording medium detected from the second image data and the read image data, wherein
• the correcting circuitry generates the third image data based on the correction value.

A control method for controlling a liquid discharge apparatus for image forming on a recording medium, the control method comprising:

• obtaining first image data for a trial printing;
• generating second image data for the trial printing by adding predetermined figure data of a predetermined figure to the first image data;
• generating third image data for a production printing by correcting any one of the first image data or the second image data based on both the second image data and read image data obtained by reading an image formed on the recording medium based on the second image data;
• discharging liquid onto the recording medium based on any one of the second image data or the third image data;
• and
• generating the third image data by correcting the first image data by using a correction value calculated by comparing a position of the predetermined figure in the second image data with a position of the predetermined figure in the read image data.