Printing apparatus, method for controlling printing apparatus, and storage medium

A method for controlling a copier including a conveyer that conveys a plurality of documents, a scanner that scans the plurality of documents which are conveyed by the conveyer, a first memory that stores image data generated by scanning the plurality of documents by the scanner, a second memory that stores the image data read out from the first memory, and a printer, the method comprising:

• controlling, in a state that the copier normally executes a copy process where the scanner scans the plurality of documents and the printer prints images based on the image data generated by scanning the plurality of document, the scanner to scan one or more documents of a former part of the plurality of documents to generate first image data, wherein the first image data is stored in the first memory, and the first image data read out from the first memory is stored in the second memory, and the printer prints one or more images based on the first image data read out from the first memory without reading out of the first image data from the second memory;
• and
• controlling, in a state that the copier normally executes the copy process, the scanner to scan one or more documents of a latter part of the plurality of documents to generate second image data, wherein the second image data is stored in the second memory, and the second image data is read out from the second memory, and the second image data that is read out from the second memory is stored in the first memory and the printer prints one or more images based on the second image data that is stored in the first memory and is read out from the first memory, the second image data being not able to be read out from the first memory without reading out from the second memory.

A copier comprising:

• a conveyer that conveys a plurality of documents;
• a scanner that scans the plurality of documents which are conveyed by the conveyer;
• a first memory that stores image data generated by scanning the plurality of documents by the scanner;
• a second memory that stores the image data read out from the first memory;
• and
• a printer;
• wherein, in a state that the copier normally executes a copy process where the scanner scans the plurality of documents and the printer prints images based on the image data generated by scanning the plurality of document,
• one or more documents of a former part of the plurality of documents are scanned by the scanner to generate first image data, and the first image data is stored in the first memory and the first image data read out from the first memory is stored in the second memory, the printer prints one or more images based on the first image data read out from the first memory not via the second memory, and
• one or more documents of a latter part of the plurality of documents are scanned by the scanner to generate second image data, the printer prints one or more images based on the second image data read out from the first memory via the second memory, the second image data being not able to be read out from the first memory without reading out from the second memory.