Systems, apparatus, articles, and methods are described including operations for coder based partial image storage and retrieval. The concealed inner face defines at least one pair of parallel grooves, preferable formed by laser ablation. In other cases, event data is obtained from external systems that is correlated with the chat session and is included within the transcript. The radiation flux is adjusted so that a sufficient number of x-rays are incident on the second radiation detector. Blur kernels used in the depth likelihood function and are identified from a mapping of depths and configuration settings to the blur kernels. The ink jet recording method of the present invention includes a step of ejecting an ink composition which contains 3-methyl pentanediol diacrylate of 30 mass % or more with respect to the total ink composition from an ink jet head onto a support, and a step of irradiating active rays in an atmosphere where the oxygen partial pressure is 0.