JPS635767B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to a loading state of a printing device that loads stored character information, print format information, etc. from an information processing device (CPU) by program processing before receiving a print command. This is related to checking.

(2) Prior Art and Problems FIG. 1 shows an example of a printing device using a method in which information on accommodated print media and print format information is loaded from a CPU by a processing program.

Before receiving the print command, the accommodated type information is stored in advance.
The information is stored from the CPU 1 into the print media information memory 13 via the interface control circuit 11 in the printing device 10.

Similarly, paper print format information is stored in the paper control memory 16. Next, a print command is received, that is, character information to be printed for one line and paper feed information are stored in the print information memory 12, respectively.
When stored in the paper feed control circuit 17, the print control circuit 15 causes the collation circuit 14 to store the print information in the print information memory 12.
The data in the printed medium information memory 13 are compared with each other. Then, the comparison result is sent to the hammer drive circuit 18.
and print the specified character in the specified column. When all the specified characters for one line are printed, the paper feed control circuit 17 transfers the paper control memory 1 to the paper feed control circuit 17.
6, a paper feed control signal is sent to the paper feed motor drive circuit 19, and the paper feed operation is executed by the specified amount. Thereafter, print processing is performed by repeatedly receiving print commands.

However, in this printing device, type information or print format information may not be set correctly in the printing device after power is turned on or immediately after an error occurs in the printing device regarding loaded information. Conventionally, print commands could be received even in such a state, and as a result, the print medium and print information did not correspond correctly, the print format was incorrect, and even if the print command was executed, incorrect printing, omissions, or errors occurred. There was a problem in that the printing format was different.

(3) Purpose of the Invention The purpose of the present invention is to provide a printing device in which stored character information, print format information, etc. are loaded from a CPU through program processing, and the loading status is checked before a print command is issued. be.

(4) Structure of the Invention In order to achieve the above object, the printing device of the present invention is a printing device that loads stored character information, print format information, etc. from an information processing unit (CPU) through program processing. means for checking whether the information is loaded on the printing device; and means for checking whether or not the information is loaded on the printing device; The device is characterized by comprising a means for reporting the inability to the information processing unit (CPU).

(5) Embodiment of the invention FIG. 2 is an explanatory diagram of the configuration of an embodiment of the invention.
This figure differs from FIG. 1 in that a memory load status check circuit 21 is provided for exchanging data with the interface control circuit 11. The memory load status check circuit 21 has a function of checking whether the information has been loaded into the printing apparatus after the power is turned on or an error occurs in the printing apparatus regarding the information. That is, when a print information load command is received, regardless of the presence or absence of an error, there is a function that detects the end of writing to the paper control memory 16 and checks whether the print information has been loaded into the memory, and a function that checks whether the print information has been loaded or not. It has a function of detecting the end of writing to the medium information memory 13 and checking the loading to the memory. When a print command is received, if there are both load commands, the process is allowed to proceed as is, and if there are no load commands or either one, the interface control circuit 11 indicates that the command cannot be executed. It is configured to report to CPU1. This indicates that the CPU 1 needs to load type information or print format information.

(6) Effects of the Invention As explained above, according to the present invention, in a printing device that loads type information or print format information from a CPU through program processing, it is possible to check whether or not this information has been loaded before issuing a print command. By providing a means for detecting a printable state, it is possible to detect a printable state. In this way, incorrect printing, omissions, and incorrect printing formats that often occur in the past can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of a conventional example, and Fig. 2 is an explanatory diagram of the configuration of an embodiment of the present invention.
10 is a printing device, 11 is an interface control circuit, 12 is a print information memory, 13 is a printed medium information memory, 14 is a verification circuit, 15 is a print control circuit,
16 is a paper control memory, 17 is a paper feed control circuit, 18 is a hammer drive circuit, 19 is a paper feed motor drive circuit, and 21 is a memory load state check circuit.

Claims (1)

[Scope of Claims] 1. In a printing device that loads character information, print format information, etc. from an information processing unit (CPU) through program processing, the printing device determines whether the information is loaded on the printing device or not. and a means for checking whether the print command is received from the information processing unit (CPU) and informing the information processing unit (CPU) that the command cannot be executed if the information is not loaded on the printing device. A printing device characterized by comprising: means for reporting.