JPH02106366A - Printer - Google Patents

Abstract

PURPOSE:To recognize a dot pattern to be actually printed on the output side of printing data by providing means for returning image data to be printed, fed from a host system, to the output side of the data. CONSTITUTION:Printing data fed from a host computer 22 to a printer 21 is input to a control unit 23, converted from hexadecimal character code into dot pattern, and stored in a pattern buffer 25. The stored dot pattern is fed to the computer 22 through the unit 23. Thus, since the dot pattern to be printed is fed to the output side of the printing data, a printing result can be substantially completely recognized on the output side of the data. Similar means is provided for noncharacter pattern such as ruled lines to obtain the similar effect.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a printing apparatus that handles the final information form of print data using dots as the minimum unit.

[Prior Art] Conventional printing apparatuses either print according to manually input print data or only send back part of the information in response to input print data.

(The following is a blank space) [Problems to be solved by the invention] However, in the above-mentioned conventional example, it is not possible to completely convey the image information to be printed to the output device that outputs the print data. There is a drawback that if the command cannot be executed by the printing device, the pattern based on the output print data does not necessarily match the image output from the printing device.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a printing device that allows confirmation of the pattern actually printed.

1. Means for Solving the Problem] In order to achieve such an object, the present invention provides a storage means for storing a pattern of data to be printed sent from a host device, and a sending means for sending the pattern back to the host device. and.

[Function] According to the present invention, by providing a function to send all or part of the image data to be printed back to the print data output side, it is possible to recognize the dot pattern actually printed on the print data output side. It has been made possible.

[Example] Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the printing apparatus according to the present invention includes a storage means 101 for storing a pattern of data to be printed sent from a host device, and a sending means 102 for sending the pattern back to the host device.

FIG. 2 shows the configuration of an embodiment of the present invention. Here, 21 is the entire printing device. 22 is a host computer that sends print data to the printing device 21. Reference numeral 23 denotes a control unit that controls the entire printing apparatus 21, and a control program is stored in the memory within the control unit 23 in accordance with the processing procedure shown in the flowchart of FIG.

Reference numeral 24 denotes a pattern converter that converts character codes into dot patterns. A pattern buffer 25 stores a dot pattern to be printed. 26 is a printing section that actually performs printing.

FIG. 3 shows the structure of the character pattern. This character pattern consists of 24 dots in the vertical direction and 16 dots in the horizontal direction. 31 is a solid black pattern, and 32 is a pattern of the alphabet "a".

Next, the operation of outputting the print result pattern to the host computer 22 in the above configuration will be explained. Print data sent from the host computer 22 to the printing device 21 is manually input and analyzed by the control unit 23. If the analyzed result is to be printed, the pattern converter 24 converts the character code into a dot pattern and stores it in the pattern buffer 25.
Store in. The stored pattern is sent to the host computer 22 via the control section 23.

As an example, when the character code of the alphabet "a" is sent from the host computer 22, the case where the dot pattern of that character is returned to the host computer 22 will be explained with reference to the flowchart of FIG. In addition,
The code system is ASCII, and the character dot pattern is shown by reference numeral 32 in FIG.

First, in step S1, the hexadecimal number 61 is sent from the host computer 22 to the control section 23. Next, in step S2, the control unit 23 recognizes the print code, and in step S3, the pattern conversion unit 2
4, it is converted into a dot pattern 32. Then, it is stored in the pattern buffer 25 in step S4.

In step S5, the pattern is further changed to the control unit 2.
3 to the host computer 22. If the four dots in the horizontal direction of the pattern are represented by one hexadecimal number and sent from the top dot, the data of the dot pattern data 32 will be as shown in FIG.

In this embodiment, only character patterns are targeted, but similar effects can be obtained by providing similar means for non-character patterns such as ruled lines.

[Effects of the Invention] As explained above, in the present invention, since the dot pattern to be printed is sent back to the print data output side, the print result can be almost completely recognized on the print data output side. effective.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of a printing apparatus according to the present invention, FIG. 2 is a configuration diagram showing an embodiment of the present invention, FIG. 3 is a configuration diagram of a character pattern, and FIG. 4 is a flowchart of an embodiment of the present invention. Figure 5 is the fourth
It is a figure which shows the data of the pattern sent in step S5 of a figure. 21...Printing device, 22...Host computer, z3...Control unit, 24...Pattern conversion unit, 25...Pattern buffer, 26...Printing unit. Embodiment of the present invention ΣIllustration of the construction method Fig. 2 A wide drawing of the A-1 layout on the TP printing system according to the present invention Fig. 1 Structure diagram of the character pattern Fig. 3 Flowchart of the embodiment of the present invention No. 4 Figure 5 shows the data of the pattern that is also sent to the station controller S5 in Figure 4.

Claims (1)

Claims: 1) A printing device comprising: storage means for storing a pattern of data to be printed sent from a host device; and sending means for sending the pattern back to the host device.