Image forming apparatus

An image forming apparatus comprising:

• an image reading device including a reading table, the image reading device to generate image data from reading of a pattern on a recording medium placed on the reading table;
• an image forming device including:
• a photoconductor;
• a charger to charge a surface of the photoconductor;
• an exposure device to expose the charged surface of the photoconductor to form an electrostatic latent image on the photoconductor, the exposure device including:
• a light-emitting element;
• a memory to store a first correction value for correcting a light emission amount of the light-emitting element;
• and
• a driver to drive the light-emitting element;
• and
• a developing device to supply toner to the electrostatic latent image to form a toner image;
• a transfer device to transfer the toner image onto a recording medium;
• and
• a fixing device to fix the toner image on the recording medium;
• and
• a processor configured to:
• cause the image forming device to form a predetermined pattern on the recording medium and cause the image reading device to generate the image data of the predetermined pattern;
• calculate a second correction value for correcting the light emission amount, based on density data acquired from the image data of the predetermined pattern;
• calculate a third correction value based on the first correction value and the second correction value, the third correction value for correcting the light emission amount;
• and
• determine, before calculating the third correction value, whether placement of the recording medium on the reading table is correct based on the density data.