JPH047162A - Document editing device - Google Patents

Abstract

PURPOSE:To permit a high quality printing to be attained as desired by a user and prevent the failure of printing and the occurrence of time loss by a method wherein a surrounding condition is detected by a temperature sensor and a printing density displayed on a display device in a gradation manner is inputted by the user through an input device. CONSTITUTION:An ambient temperature is converted into resistance value by a temperature sensor 7. When the analog temperature information thus obtained is converted by an A/D conversion circuit 6 into a digital signal, for example, in a 5 deg.C increment, twenty sample values are established, if the temperature measured by a thermister range from 0 to 50 deg.C. This sample value is received in an I/D control circuit 5 and supplied to an application energy computing circuit 8-a. The values of density corresponding to printing densities are displayed on a display device 11 stepwise and, when the density value corresponding to the printing desired by a user is selected by him through an input device 13, its information is sent to the application energy computing circuit 8-a to read out a content D5 of the corresponding address. The content D5 is thereafter supplied to an energizing pulse computing circuit 8-c for conversion into an energizing pulse width, which is then applied to the printing head of a printer 9.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a document editing device having functions such as document input, N collection, printing, etc., such as a Japanese word processor.
The present invention relates to a document editing device suitable for printing high-quality characters in any environment.

[Conventional technology]

Many document editing devices, such as conventional Japanese word processors, use thermal transfer printers to print the created documents.These thermal transfer printers apply heat to the head to melt the ink ribbon. Since the printer is fused to the printing paper, the print density is easily affected by the ambient temperature.

Therefore, the ambient temperature is captured by a temperature sensor such as a thermistor, and the applied energy is controlled so that when the ambient temperature is high, the thermal energy applied to the head is small, and when the ambient temperature is low, the thermal energy applied to the head is increased. Ta. Furthermore, as one method of controlling the applied energy, a user adjusts the slide volume to arbitrarily adjust the thermal energy applied to the head, thereby adjusting the printing density.

In addition, as an example of another method, Patent Publication No. 57-105094
Although the printing density can be set using the display device, there is no consideration given to the ambient temperature.
Accurate density values cannot be set for printers that print using the thermal energy of a print head, such as a thermal transfer printer, which is affected by the ambient temperature.

[Problem to be solved by the invention]

With conventional printing methods, the print density can be freely adjusted using a manual slide volume, but it is difficult to visually judge the density value that can be printed before actually printing, and there are problems with changes in ambient temperature. Therefore, after printing was completed, the density value was different from the user's desired density value.

The purpose of the present invention is to solve both of these drawbacks by utilizing data from a temperature sensor used to control the applied energy of the printer, and by displaying the print density on a display device and freely selecting it, it is possible to achieve high print density. The purpose is to be able to print according to the wishes of users who also desire quality.

[Means to solve the problem]

A temperature sensor that converts the ambient temperature into a resistance value, an A/D conversion circuit that converts the analog temperature information into numerical information, and an I10 control circuit that takes in the temperature sensor data are installed, and a display that displays the print density in gradations. A display device for selecting the device and its value, and means for storing applied energy values in advance as a table, and means for calculating applied energy information from the temperature information and information input by the input device;
Means was provided for converting the applied energy information into a current pulse width for energizing the print head.

[Effect]

When this document editing device is used for printing, the temperature sensor captures the ambient temperature and converts it into a resistance value. The analog temperature information is converted into a digital signal by the A/D conversion circuit and input into the ■/○ control circuit. Furthermore, when the print density is displayed in gradation on the display device, the user selects the value using the input device. On the other hand, by providing means for storing the applied energy values of the print head in advance as a table, the applied energy value can be calculated from the digital temperature information and the print density value selected by the display device, and then the applied energy value can be calculated from the digital temperature information and the print density value selected by the display device. The value is converted into the energization pulse width that energizes the application head and printed.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is a circuit block diagram of a document editing device according to an embodiment of the present invention, in which 9 is a printer that outputs a document, 7 is a temperature sensor that detects temperature, 1 is a central processing unit (CPU), and 11 is a A display device that displays an input and edited document; 10 a display controller that controls the display device 11; 12 a display device 11;
3 is a system memory that stores the command program and permissible temperature range of this document editing device, and 2 is a character that stores character patterns for display and printing. Generator (hereinafter referred to as CG-R)
(abbreviated as OM), 4 is a document information memory that stores document data, 5 is an I10 control circuit that takes in the data of the temperature sensor, and 6 is an A/D conversion that converts the analog signal of the temperature sensor into a digital signal. A printer controller 8 controls the energy applied to the head of the printer 9 and the motor.

First, to print characters, the CPUI reads character code information written in the document information memory 4, retrieves a character pattern corresponding to the character code information from the CG-ROM 2, and outputs it to the printer 9. Also, the ambient temperature is measured by temperature sensor 7.
The resistance value is converted into a digital signal by the A/D converter 6 and read via the work/○ control circuit 5. Since this digital signal corresponds to the actual temperature, it is converted to obtain the actual temperature. Next, the print density values are displayed in stages on the display device 11, and when the user makes a selection using the input device 13, the selected input signal is input to the printer controller 8 and printed by the printer 9.

FIG. 2 shows a detailed functional block diagram of the print processing steps centered on the printer controller 8 mentioned above. First, the temperature sensor 7 converts the ambient temperature into a resistance value. Assuming that the analog temperature information is converted into a digital signal by the A/D conversion circuit 6 in steps of, for example, 5°C, 20 sample values will be provided when the temperature measurement range of the thermistor is 0 to 50°C. Become. This sample value is taken into the work/○ control circuit 5, temporarily latched, and input to the applied energy calculation circuit 8-a.

On the other hand, the display device 11 displays the density value corresponding to the print density in stages as shown in FIG.
If you select the density value that corresponds to the print density value in step 3,
The information is input to the applied energy calculation circuit 8-a. The applied energy calculation circuit 8-a has a table memory 8-b having a system as shown in FIGS. 4 and 5.

Here, the contents of the table memory 8-b are shown in FIGS. 4 and 5.
To explain this in detail, in FIG. 4, the horizontal axis represents temperature expressed as a numerical value, and the vertical axis represents the amount of printing energy, which simultaneously corresponds to the printing density value. Part a represents the amount of energy applied to the printhead, and part b represents the amount of energy that the ambient temperature imparts to the printhead. Here, the energy amount of part a and b
The sum of the energy amounts of the parts becomes the total energy amount given to the print head and becomes the print density value.However, if the user sets the print density value at a certain ambient temperature, the total energy amount is calculated by the ambient temperature. The amount of energy given to the print head by subtracting the applied energy a
(the shaded area) is stored. The inside is shown in Fig. 5, and each alphabet A to A represents the amount of energy applied to the print head.For example, if the user sets the print density of D rank and the ambient temperature at that time is 20 degrees Celsius, The applied energy calculation circuit 8-a reads out the content D6 of the corresponding address.

Thereafter, D5 is inputted to the energizing pulse calculating circuit 8-c, converted into an energizing pulse width, and applied to the printing bed of the printer 9, where it becomes energy and is printed.

By incorporating a clock, the applied energy calculation circuit 8-a can synchronize with temperature data and constantly send applied energy data from the table memory 8-b. As a result, even if the ambient temperature changes during printing, the applied energy corresponding to the temperature is output to the printer, and a constant print density is maintained.

[Effect of the invention] In the conventional printing method, it was possible to adjust the print density using a manual slide volume, but in reality it was not possible to visually judge the density value, and the user had to adjust the print density after printing was completed. However, according to the present invention, after detecting the surrounding environment with a temperature sensor, the user can freely input the print density displayed in stages on the display device using the input device. This has the effect that users who desire high print quality can print without going against their will, eliminating printing failures and time loss.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the functions of the present invention, FIG. 2 is a functional block diagram of an embodiment of the present invention, FIG. 3 is a diagram showing density values corresponding to print density values on a display device, and FIG. The figure shows the amount of printing energy relative to the ambient temperature, and FIG. 5 shows the contents of the table memory. 5... I10 control circuit, 6... A/D converter, 7...
Temperature sensor, 8. Printer controller, 9. Printer, 10. Display controller, 11. Display device. 12...Display memory, 13...Input device.

Claims (1)

[Claims] 1. At least an input device for inputting desired characters, a document information storage device for storing character codes, etc. input from the input device as character code information, and In a document editing device comprising a display device that displays character code information, a printer that prints the character code information stored in the document information storage device using a print head, and a temperature sensor that detects ambient temperature, means for capturing the ambient temperature by the temperature sensor, means for converting the temperature information captured by the means into numerical information, and means for displaying the print density value on the display device. , means for setting a print density value using the input device, means for storing the relationship between the print density value and ambient temperature as an applied energy value to the printer, and a means for storing the data as an applied energy value to the printer. A document editing device characterized by comprising means for converting into a document. 2. The document editing device according to claim 1, further comprising means for displaying density values in stages on a display device to enable a user to select a desired print density. .