Abstract: A print control system 1 includes a printer 12 that prints based on print data; a connection server 50 that connects to the printer 12, generates print data based on print information data, and sends the print data to the printer 12; a management server 60 that connects to the connection server 50 and sends print information data to the connection server 50; and a management device 14 that connects to the management server 60, generates print information data, and sends the generated print information data to the management server 60.

Abstract: A print control system 1 includes a barcode reader BR; a printer 12 that receives read result data transmitted from the barcode reader BR and transmits the read result data by a WebSocket connection CT; a control server 10 that receives and transmits the read result data from the printing device; a management device 14 that receives and transmits the read result data from the control server 10; and a tablet terminal 9 that receives the read result data from the management device 14 and generates print command data based on the read result data.

Abstract: A print control system 1 includes a control server 10 that opens a communication path for asynchronous duplex communication, generates print data, and outputs the generated print data by the opened communication path; and a printer 12 that opens a communication path, receives the print data by the opened communication path, and prints based on the received print data.

Abstract: A print control system 1 has a control server 10 that transmits print data, and a printer 12 that communicates with the control server 10 through an asynchronous duplex communication path, receives print data sent by the control server 10 through the communication path, and prints based on the received data.

Abstract: A print control system 1 includes a printer 12 that prints based on print data; a connection server 50 that connects to the printer 12, generates print data based on print information data, and sends the print data to the printer 12; a management server 60 that connects to the connection server 50 and sends print information data to the connection server 50; and a management device 14 that connects to the management server 60, generates print information data, and sends the generated print information data to the management server 60.

Abstract: A muffler for a motor vehicle which serves as a reactor for oxidizing or re-burning unburned constituents in engine exhaust gases. The muffler comprises a heat insulated inner shell in which a chamber is provided with a silencing unit and is kept at a high temperature sufficient to oxidize the unburned constituents, an outer shell covering the heat insulated inner shell, and means for absorbing the thermal expansion of the inner shell provided in a supporting device of the inner shell. An exhaust pipe extends into the inner shell and has one end provided with a collector. The collector has a guide opening to pass engine exhaust gases into the inner shell while achieving mixing of the exhaust gases in the collector thereby to promote oxidizing reaction of the exhaust gases.