JPH01241618A - Printer - Google Patents

Abstract

PURPOSE:To evade printing and outputting erroneous data or unnecessary data and to economize a time and resources by providing the mode of control which does not output even when received a signal. CONSTITUTION:A printing device equips a data analyzing means 101 to analyze inputted printing data, an output means 102 to execute the print and output on the basis of an analyzed result, a data ineffective means 103 to make the inputted printing data ineffective and a switching means 104 to switch the data analyzing means 101 and data ineffective means 103. Thus, the mode of the control is provided not to execute the output even when a data receiving part 3 receives the data. Thus, the unnecessary data can be prevented from being printed and outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printing device that prints out information on recording paper or the like in accordance with data input from an external device such as a host computer.

(Prior Art) As shown in the block diagram of FIG. 4, in this conventional printing device 1, a data receiving section 3 receives data sent from an external device 2 such as a host computer. Store it once in buffer 4. The data analysis unit 5
Data is taken out from the reception buffer 4 and analyzed to create an analysis data buffer 6. The output control section 7 controls the output section 8 according to the analysis data buffer 6 to perform printout on a recording medium 9 such as recording paper.

[Problem to be solved by the invention]

However, in the conventional example described above, the only control flow is that the received data is always analyzed by the data analysis section 5, the analysis data buffer 6 is formed, and the output section 8 outputs it. However, there is a drawback in that there is no means for avoiding unnecessary print output on the printing device 1 side when unused data or unnecessary data is sent to the data receiving section 3.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing device that eliminates the above-mentioned drawbacks and prevents unnecessary data from being printed.

[Means for Solving the Problems] In order to achieve such an object, the present invention provides a data analysis means for analyzing input print data, an output means for performing printout based on the analysis result, and an input The present invention includes a data invalidating means for invalidating printed data, and a switching means for switching between the data analyzing means and the data invalidating means.

[For production]

According to the present invention, by providing a control mode in which the data receiving section does not output data even if it receives the data, it is possible to prevent unnecessary data from being printed out.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the printing device according to the present invention includes a data analysis means 101 for analyzing input print data, an output means 102 for outputting print data based on the analysis result, and a data analysis means 102 for analyzing input print data. Data invalidation means 10 to invalidate
3, data analysis means 101 and data invalidation means 10
The present invention is characterized in that it includes a switching means 104 for switching between 3 and 3.

FIG. 2 is a block diagram showing an embodiment of the invention. In FIG. 2, the same parts as in FIG. 4 are given the same reference numerals.

Reference numeral 12 denotes a software mode changeover switch for switching between a normal mode and an invalidation mode, which is a mode in which only reception is performed and no output is performed. 13 is receive buffer 1
4 is a data retrieval unit that functions only to retrieve data.

FIG. 3 is a flow chart of an embodiment of the present invention. The operator can select the normal mode or the invalidation mode by switching the mode changeover switch 12 through a panel operation such as pressing a button, for example.

In step Sl, when it is determined that the selected mode is the normal mode, the process moves to step S2, where the data in the reception buffer 4 is extracted and analyzed by the data analysis unit 5 as before, and an analysis data buffer 6 is created. . Then, in step S3, printing is performed on recording paper or the like.

On the other hand, if it is determined in step 51 that the invalidation mode has been selected, the process moves to step S4, and the data retrieval unit 13 performs only the operation of retrieving data from the reception buffer 4. Therefore, although data is received, the analysis data buffer 6 is not created and therefore no output is performed.

As another example, the data to be skipped can be limited by performing a simple analysis in the data retrieval unit 13. That is, if there is certain specific data, it is possible to control such as stopping reception at that point or switching to normal mode. Examples of specific data include the following:

■Form feed control code ■Initialization command ■Paper size change command By performing such control, it is possible to prevent only specific received data from being output.

〔Effect of the invention〕

As explained above, in the present invention, by providing a control mode in which no output is performed even if received,
It is possible to avoid printing out incorrect or unnecessary data, saving time and resources.

[Brief explanation of the drawing]

Fig. 1 is a basic configuration diagram of a printing device according to the present invention, Fig. 2 is a diagram showing a printing device according to an embodiment of the present invention, Fig. 3 is a flowchart of an embodiment of the present invention, and Fig. 4 is a conventional printing method. It is a figure showing an apparatus. DESCRIPTION OF SYMBOLS 1... Printing device, 2... External device, 3... Data receiving section, 4... Reception buffer, 5... Data analysis section, 6... Analysis data buffer, 7... Output Control unit, 8... Power unit, 9... Recording medium, 12... Mode changeover switch, 13...
Data retrieval section.

Claims (1)

[Scope of Claims] 1) data analysis means for analyzing input print data; output means for outputting print data based on the analysis results; and data invalidation means for invalidating the input print data. . A printing device comprising: switching means for switching between the data analysis means and the data invalidation means.