Printing system, print control method therefor, and photo-direct printing apparatus

A print control method for a printing system in which an image sensing apparatus and a printing apparatus are directly connected via a general-purpose interface, and image data is transmitted from the image sensing apparatus to the printing apparatus and printed, the method comprising:

• a transmission step of transmitting at once function information of the printing apparatus from the printing apparatus to the image sensing apparatus after establishing a communication procedure by an application installed in the printing apparatus and the image sensing apparatus;
• an information ignoring step of ignoring the information in the image sensing apparatus, in a case where the function information transmitted in said transmission step contains information which cannot be discriminated by the image sensing apparatus;
• and
• a step of controlling to give priority to a print function of the printing apparatus and perform print processing by the printing apparatus, in a case where the function information includes a print function which does not match the print function of the printing apparatus.

A photo-direct printer apparatus which is directly connected to an image sensing apparatus via a general-purpose interface, and receives and prints image data from the image sensing apparatus, the apparatus comprising:

• transmission means for transmitting at once function information of the printer apparatus to the image sensing apparatus after establishing a communication procedure by an application installed in the printer apparatus and the image sensing apparatus;
• reception means for receiving print information which is created by the image sensing apparatus on the basis of the function information;
• determination means for determining whether a print function contained in the print information received by said reception means matches a print function of the printer apparatus;
• and
• control means for giving priority to the print function of the printer apparatus rather than the print function which is determined by said determination means not to match the print function of the printer apparatus, and performing processing.

A printing system in which an image sensing apparatus and a printing apparatus are directly connected via a USB interface, and image data is transmitted from the image sensing apparatus to the printing apparatus and printed,

• wherein the image sensing apparatus and the printing apparatus have an application which operates in accordance with an image transfer protocol installed in the USB interface;
• the printing apparatus comprising:
• transmission means for transmitting at once function information of the printing apparatus to the image sensing in accordance with the image transfer protocol after establishing a communication procedure by the application installed in the printing apparatus;
• and
• control means for giving priority to a print function of the printing apparatus and performing print processing, in a case where the function information includes a print function which does not match the print function of the printing apparatus;
• and
• the image sensing apparatus comprising:
• information ignoring means for ignoring the information, in a case where the function information transmitted by said transmission means contains information which cannot be discriminated by the image sensing apparatus;
• and
• print instruction transmission means for creating the print information on the basis of the function information and transmitting the print information to the printing apparatus in accordance with the image transfer protocol.

A photo-direct printer apparatus which is directly connected to an image sensing apparatus via a USB interface, and receives and prints image data from the image sensing apparatus, comprising:

• an application which operates in accordance with an image transfer protocol installed in the USB interface;
• communication means for executing a communication procedure by the application and executing data exchange between the printer apparatus and the image sensing apparatus;
• transmission means for transmitting function information of the printer apparatus to the image sensing apparatus in accordance with the image transfer protocol after establishing communication by said communication means;
• reception means for receiving a print condition set by the image sensing apparatus on the basis of the function information transmitted by said transmission means;
• and
• control means for giving priority to a print function of the printer apparatus and performing print processing, in a case where the print condition received by said reception means contains a print function which does not match the print function of the printer apparatus.