JPS63288317A - Printer - Google Patents

Abstract

PURPOSE:To curtail the cost of a connecting cable, and to use a printer in common by plural host devices, by inputting the information from the host device to the printer by a radio system. CONSTITUTION:A transmitting part 1 sends out a transmission request command to a computer, and a receiving part 2 receives a reception request command from the computer, which is sent back in response to its transmission request command. Also, the receiving part decides whether it is a reception request command corresponding to said transmission request command or not, and if so, its result is transmitted again to the computer. In such a way, a printer is connected by radio to the computer. Subsequently, the computer sends out printing information to the receiving part 2. The receiving part sends out successively the received printing information, and starts printing. When a printing end command from the computer is received, the transmitting part 1 sends out a connection end command, disconnects the connection of the printer and the computer, and is put into a state of waiting.

Description

[Detailed description of the invention] 1! (1) The present invention relates to a printer, and particularly to a printer used as an output device of an information processing device.

[11] Conventionally, this type of printer was connected to a host device using a cable. Therefore, when a printer and a host device are installed in a public place, a long cable is required, which is expensive.

Further, when a single printer is shared by a plurality of host devices, a large number of cables are required, and a means for switching received information is also required.

An object of the present invention is to provide a printer that allows the cost of connection cables to be reduced.

Another object of the present invention is to provide a printer that can be shared by multiple host devices.

(1201) The printer of the present invention is characterized by having a receiving unit that receives information from a higher-level device in a wireless manner, and a printing unit that performs printing according to the information received from the higher-level device.

Example Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a system diagram showing an embodiment of a printer according to the present invention. In the figure, the printer according to the present invention includes, for example, a transmitter 1 that wirelessly transmits a transmission request command and a connection termination command to a computer (not shown) as a host device, and a transmitter 1 that transmits a reception request command and a connection termination command from the computer. It includes a receiving section 2 that receives print information wirelessly, and a printing section 3 that performs printing according to the print information.

Here, it is assumed that the transmission request command and the reception request command have predetermined identification information, and the print information includes a print start command and a print end command in addition to the print data to be actually printed. shall be.

After the power is turned on, the printer 4 is still not connected to the computer. At this time, the transmitter 1 sends a transmission request command to the computer. The receiving unit 2 then receives a reception request command sent back from the computer in response to the transmission request command. Furthermore, the receiving unit 2 determines whether this reception request command corresponds to the previous transmission request command based on the identification information in the reception request command. The determined result is sent to the transmitter 1, and the transmitter 1 sends a transmission request command to the computer in response to the result.

With the above, the printer is wirelessly connected to the computer. Next, the computer sends print information to the receiving section 1. The receiving section 1 sequentially sends the received printing information to the printing section 3, and the printing section 3 starts printing in response to a printing start command included in the printing information. When printing ends in response to the print end command, the transmitter 1 sends a connection end command, and the connection between the printer 4 and the computer is ended.

As a result, the printer 4 returns to a state where it is not connected to the computer and sends out the transmission request command again.

In addition, by sending out transmission request commands at regular intervals and devising identification information depending on the number of computers on the other end,
It is also possible to share the printer with multiple computers.

Furthermore, it is clear that the present invention can be used in any wireless system such as FM system or AM system.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention has the effect of reducing the cost of connection cables by wirelessly inputting information from a host device to a printer, and allows multiple host devices to operate a printer. Some effects can be shared.

[Brief explanation of drawings]

FIG. 1 is a system diagram of a printer according to an embodiment of the present invention. Explanation of symbols of main parts 1... Transmitting section 2... Receiving section 3... Printing section

Claims (1)

[Claims] a receiving means for receiving information from a host device in a wireless manner;
A printer characterized in that it has a printing unit that performs printing according to information received from the host device.