An electrode manufacturing apparatus configured to discharge a liquid to form a resin layer or an inorganic layer on an electrode substrate which is being conveyed in a predetermined direction, wherein a plurality of points where a property varies are present on the electrode substrate along a direction intersecting the predetermined direction, and wherein the liquid is discharged based on image data, the electrode manufacturing apparatus comprising: a detector, which is configured to output a plurality of pieces of detection information obtained by detecting at least one of the plurality of points in time series; a storage device configured to store a plurality of image data, which have different widths in the direction intersecting the predetermined direction, in association with combined detection information; a liquid discharger provided on a downstream side of the detector in the predetermined direction and configured to discharge the liquid to form the resin layer or the inorganic layer; a controller configured to control a discharge condition of the liquid discharger, based on the combined detection information obtained by combining the plurality of pieces of detection information, and in accordance with the image data obtained by referring to a storage device based on the combined detection information; a generator configured to generate, based on the combined detection information, the plurality of image data which have different widths in the direction intersecting the predetermined direction, wherein the generator is configured to generate the plurality of image data before the electrode manufacturing apparatus performs an operation to discharge the liquid to form the resin layer or the inorganic layer on the electrode substrate which is being conveyed in the predetermined direction, and the storage device is configured to store the plurality of image data generated by the generator. a detector, which is configured to output a plurality of pieces of detection information obtained by detecting at least one of the plurality of points in time series; a storage device configured to store a plurality of image data, which have different widths in the direction intersecting the predetermined direction, in association with combined detection information; a liquid discharger provided on a downstream side of the detector in the predetermined direction and configured to discharge the liquid to form the resin layer or the inorganic layer; a controller configured to control a discharge condition of the liquid discharger, based on the combined detection information obtained by combining the plurality of pieces of detection information, and in accordance with the image data obtained by referring to a storage device based on the combined detection information; a generator configured to generate, based on the combined detection information, the plurality of image data which have different widths in the direction intersecting the predetermined direction, wherein the generator is configured to generate the plurality of image data before the electrode manufacturing apparatus performs an operation to discharge the liquid to form the resin layer or the inorganic layer on the electrode substrate which is being conveyed in the predetermined direction, and the storage device is configured to store the plurality of image data generated by the generator.