Patent ID: 8447193

Claim:
A printing system comprising: a first printing apparatus configured to perform printing by using a first color material; and a second printing apparatus configured to perform printing by using a second color material, wherein a sheet discharge unit of the first printing apparatus and a sheet feeding unit of the second printing apparatus are interconnected, wherein the first printing apparatus includes: a reception unit configured to receive, from the second printing apparatus, stop detection information regarding timing of a printing stop in the second printing apparatus; and a control unit configured to feed sheets for performing printing up to a page indicated by the stop detection information received by the reception unit, perform printing on the sheets by using the first color material to prevent retention of the fed sheets, and cancel feeding preparation of the sheets for printing the page indicated by the stop information and succeeding pages, and wherein the second printing apparatus includes: a stop detection information generation unit configured to detect timing of a printing stop in the second printing apparatus, and generate stop detection information regarding the stop timing; a transmission unit configured to transmit the stop detection information generated by the stop detection information generation unit to the first printing apparatus; and a printing unit configured to perform printing, by using the second color material, on the sheets on which the printing has been performed by the control unit, wherein a total stop period of time is calculated when the stop detection information is generated by the stop detection information generation unit, the total stop period of time indicative of at least resumption of processing performed by the first printing apparatus.