Patent ID: 9557941
Date: 2017-01-31
CPC Classifications: G06F

Claim:
1. A printing apparatus comprising: a printing unit configured to perform printing based on printing data including a plurality of pages; a first acquisition unit configured to acquire a page count per copy; a second acquisition unit configured to acquire a margin size of respective pages of the page count in a first copy; an extraction unit configured to extract data of a predetermined portion of a printing area from the respective pages of the page count in the first copy; a page determination unit configured to determine whether the data of the predetermined portion extracted by said extraction unit are identical among the respective pages in the first copy; and a printing determination unit configured to, when said page determination unit determines that the data of the predetermined portion are identical among the respective pages, determine that printing of the printing data is not collation printing, and when said page determination unit determines that the data of the predetermined portion are not identical among the respective pages, determine that printing of the printing data is collation printing, and a paper feeding control unit configured to, when feeding printing paper for printing of each of pages in a second and subsequent copies after determination of said printing determination unit, control a paper feeding operation to convey preceding printing paper and succeeding printing paper so as to make the preceding printing paper and the succeeding printing paper to partially overlap each other based on the margin size acquired by said second acquisition unit, wherein said acquisition unit, said second acquisition unit, said extraction unit, said page determination unit, said printing determination unit and said paper feeding control unit are implemented by a processor of the printing apparatus.