Printing device that prioritizes processing of raw and JPEG data according to amount of print data in standby state

1. A printing device for preparing print data from image data and sequentially printing the print data, the printing device comprising:

a print instruction receiving unit which receives a print instruction with the selection of the image data; and

a print data preparing unit which, when the print instruction is received by the print instruction receiving unit with the selection of a plurality of pieces of image data including JPEG data and RAW data before a development process, performs a process of preparing the print data from the JPEG data among the plurality of pieces of selected image data prior to a process for performing the development process with respect to the RAW data and preparing the print data if at least a predetermined amount of print data in a print standby state, in which printing is not completed by the printing device, is not present, and performs the process for performing the development process with respect to the RAW data and preparing the print data prior to the process of preparing the print data from the JPEG data if the at least predetermined amount of print data in the print standby state, in which printing is not completed by the printing device, is present.

2. The printing device according to claim 1 , wherein the predetermined amount is decided such that a time necessary for printing the print data in the print standby state becomes equal to or greater than a time necessary for at least the development process.

3. The printing device according to claim 1 , wherein: the print instruction receiving unit receives the print instruction with print setting, and the print data preparing unit determines whether the at least predetermined amount of print data in the print standby state is present on the basis of the print setting.

4. The printing device according to claim 3 , wherein the print setting includes a sheet size and/or print quality.

5. The printing device according to claim 1 , wherein the print data preparing unit performs the development process with respect to the RAW data and prepares the print data although the at least predetermined amount of print data in the print standby state is not present when unprocessed JPEG data from which the print data should be prepared is not present.

6. A method of controlling a printing device for preparing print data from image data and sequentially printing the print data, the method comprising:

receiving a print instruction with the selection of the image data; and

when the print instruction is received with the selection of a plurality of pieces of image data including JPEG data and RAW data before a development process, performing a process of preparing the print data from the JPEG data among the plurality of pieces of selected image data prior to a process for performing the development process with respect to the RAW data and preparing the print data if at least a predetermined amount of print data in a print standby state, in which printing is not completed by the printing device, is not present, and performing the process for performing the development process with respect to the RAW data and preparing the print data prior to the process of preparing the print data from the JPEG data if the at least predetermined amount of print data in the print standby state, in which printing is not completed by the printing device, is present.

7. A non-transitory computer-readable medium recorded with a program for executing the steps of the method of controlling the printing device according to claim 6 on one or a plurality of computers.