A printing device has a print unit for printing on roll paper; a wireless communication unit for communicating wirelessly with a paired control device; and a controller for receiving print data by wireless communication from the control device, and controlling the print unit based on the received print data. When changing from a pairing-disabled mode to a pairing-enabled mode, the controller controls the print unit to print pairing-related information on roll paper, does not process pairing in the pairing-disabled mode, and processes pairing when a pairing request is received in the pairing-enabled mode.

In a system in which communication between an information processing apparatus and a printing apparatus is possible, the information processing apparatus detects that communication with the printing apparatus has become possible and, in response to detection that such communication has become possible, generates print data based upon data that the information processing apparatus is displaying on a display unit connected to or built in the information processing apparatus, and transfers the generated print data to the printing apparatus. The printing apparatus prints the data received from the information processing apparatus.

A printing device has a print unit for printing on roll paper; a wireless communication unit for communicating wirelessly with a paired control device; and a controller for receiving print data by wireless communication from the control device, and controlling the print unit based on the received print data. When changing from a pairing-disabled mode to a pairing-enabled mode, the controller controls the print unit to print pairing-related information on roll paper, does not process pairing in the pairing-disabled mode, and processes pairing when a pairing request is received in the pairing-enabled mode.

The invention provides a communication apparatus communicable with an information processing apparatus, wherein the apparatus comprises a first transmission unit configured to transmit, to the information processing apparatus, information for displaying a setting screen for accepting an input of setting information concerning Extensible Authentication Protocol (EAP) authentication as authentication based on IEEE802.1X/EAP; a reception unit configured to receive, from the information processing apparatus, the setting information input to the setting screen; an attempt unit configured to attempt EAP authentication with a predetermined authentication server based on the setting information input to the setting screen; and a second transmission unit configured to transmit, based on a failure of the EAP authentication, information for displaying a screen based on the failure of the EAP authentication to the information processing apparatus.

A communication apparatus capable of communicating with an access point includes a storage unit configured to store, in at least one memory, each of first setting information, which can be changed by a first user and cannot be changed by a second user whose authorization is lower than that of the first user, and second setting information, which can be changed by the second user. The communication apparatus is operated using the first setting information when a predetermined authentication method is used in communication in which connection in which connection between the access point and the communication apparatus is established is used, and the communication apparatus is operated using the second setting information when the predetermined authentication method is not used.

Deterioration of communication is prevented in a communication apparatus, in which an infrastructure mode and a P2P mode are independently and concurrently executable, according to an embodiment of the present invention. Hence, in a case where the communication apparatus is in a state in which a first mode of executing wireless communication with a communication partner apparatus via an external access point and a second mode of executing wireless communication with an external apparatus without using the external access point are concurrently executable, the following selection is made. That is, a first channel width which is not accompanied by network detection processing is selected.

In a case where an image forming apparatus operates as a master station that determines a communication channel to be used in wireless communication, the image forming apparatus transmits a second trigger frame, which is compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard and includes information indicating that carrier sense is to be executed, to a slave station apparatus connected to the master station.

In a case where an image forming apparatus operates as a master station determining a communication channel used in wireless communication, the image forming apparatus transmits a second trigger frame that includes information indicating inexecution of carrier sensing and complies with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, to a slave station apparatus connected to the master station.

In a system in which communication between an information processing apparatus and a printing apparatus is possible, the information processing apparatus detects that communication with the printing apparatus has become possible and, in response to detection that such communication has become possible, generates print data based upon data that the information processing apparatus is displaying on a display unit connected to or built in the information processing apparatus, and transfers the generated print data to the printing apparatus. The printing apparatus prints the data received from the information processing apparatus.

A function executing device is configured to send a wireless identifier to a communication device via a first type of wireless communication interface for setting up a wireless connection. The function executing device is configured to determine whether the function executing device is in an error state and, if not, to establish the wireless connection via a second type of wireless communication interface. The function executing device operates in a parent state in the wireless connection. Additionally, print data may be received from the communication device. However, if the function executing device is in an error state the wireless connection is not established via the second type of wireless communication interface.