Printer, non-transitory computer-readable storage medium storing computer-readable instructions for printer, and method implementable by printer

A non-transitory computer-readable storage medium storing computer-readable instructions, the instructions, when executed by a controller of a printer, causing the printer to perform:

• in response to image data being transmitted from a terminal to a server, receiving print data to be used in printing from the server, the image data representing a target image to be printed, the terminal being different from the printer;
• in response to receiving the print data from the server, transmitting a completion notification to the server prior to completion of printing of the target image, the completion notification indicating that the printing of the target image has been completed;
• subsequent to the transmission of the completion notification to the server, detecting a specific input;
• and
• in response to detecting the specific input, causing a print engine to perform the printing of the target image.

A printing method comprising:

• in response to a terminal transmitting image data to a server, receiving, at a printer, print data to be used in printing from the server, the image data representing a target image to be printed, the terminal being different from the printer;
• in response to the printer receiving the print data from the server, transmitting, at the printer, a completion notification to the server prior to completion of printing of the target image, the completion notification indicating that the printing of the target image has been completed;
• subsequent to the transmission of the completion notification from the printer to the server, detecting a specific input;
• and
• in response to detecting the specific input, causing a print engine of the printer to perform the printing of the target image.