Setting of imaging parameters using a scanner

A method for generating data while scanning over an interleaved pattern of image features formed on recording media by a recording apparatus, the method comprising:

• operating a recording head of the recording apparatus to form a regular pattern of image swaths while imaging the recording media;
• operating the recording head to form a first regular pattern of image features on recording media;
• operating the recording head to form a second regular pattern of image features on the recording media;
• interleaving image features of the first regular pattern of image features with image features of the second regular pattern of image features to form the interleaved pattern of image features on the recording media;
• operating a scanner to generate the data while scanning over the interleaved pattern of image features formed on the recording media;
• and
• adjusting at least one of a sub-scan spatial frequency of the image swaths in the regular pattern of image swaths, a sub-scan spatial frequency of each of the first regular pattern of image features and the second regular pattern of image features, and a sampling spatial frequency of the scanner to cause one of the sub-scan spatial frequency of the image swaths in the regular pattern of image swaths and the sub-scan spatial frequency of each of the first regular pattern of image features and the second regular pattern of image features to be equal to a non-integer multiple of the other of the sub-scan spatial frequency of the image swaths in the regular pattern of image swaths and the sub-scan spatial frequency of each of the first regular pattern of image features and the second regular pattern of image features, and to cause a first integer multiple of the sampling spatial frequency employed by the scanner during the scanning to be equal to a second integer multiple of the sub-scan spatial frequency of each of the first regular pattern of image features and the second regular pattern of image features.

A controller for adjusting an imaging parameter of recording apparatus comprising a media support adapted for receiving recording media and a recording head adapted for emitting radiation beams to form an image on the recording media;

• wherein the controller is configured to:
• operate the recording head to form a regular pattern of image swaths while imaging the recording media;
• operate the recording head to form an interleaved pattern of image features on the recording media, wherein the interleaved pattern of image features comprises a first set of image features formed while the imaging parameter is set to a first predetermined value and a second set of image features formed while the imaging parameter is set to a second predetermined value that is different from the first predetermined value, and wherein the image features in the first set of image features are interleaved with the image features in the second set of image features, and the image features in each of the first set of image features and the second set of image features are arranged on the recording media with a sub-scan spatial frequency that is equal to one of a non-integer multiple and a non-integer factor of a sub-scan spatial frequency of the image swaths in the regular pattern of image swaths;
• receive data generated by a scanner while scanning over the interleaved pattern of image features formed on the recording media, wherein a first integer multiple of a sampling spatial frequency employed by the scanner during the scanning is equal to a second integer multiple of the sub-scan spatial frequency of each of the first set of image features and the second set of image features;
• analyze the data in the frequency domain to determine a quantified value representative of an optical density difference between the first set of image features and the second set of image features;
• and
• adjust the imaging parameter based at least on the quantified value.