JPH0671987A - Printing device - Google Patents

Abstract

PURPOSE:To ensure that satisfactory print results can be obtained depending on the quality of a sheet by changing an ON time in accordance with the quality of a printing sheet detected by a detection part. CONSTITUTION:The printing device is equipped with an input part 13 for entering print data, a control part 20 for establishing print characters based on print data entered at the input part 13, a display part 14 for indicating print data and print characters, a detection part 19 for detecting the quality of a printing sheet set in place, and a printing part 15 for printing displayed print characters. Further, the detection part 19 changes an ON time in accordance with the quality of the sheet detected by the detection part 19. Consequently, it is possible to obtain satisfactory print results in accordance with the quality of the sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus used for fixed-form printing.

[0002]

2. Description of the Related Art In recent years, it takes a lot of time to handwrite a letter on a paper or a sushi bag, and therefore it is often printed instead of handwritten.

A conventional printing apparatus will be described below with reference to the drawings. FIG. 4 is a perspective view of a conventional printing device. In FIG. 4, the hiragana input from the input unit 1
The print data such as alphanumeric characters / symbols is displayed on the liquid crystal display of the display unit 2 and then fixed as print characters such as Chinese characters / Hiragana / alphanumeric characters / symbols. The printing unit 3 moves in the direction of the arrow 4 to print the decided printing characters on the printing paper 6 such as a fun paper placed on the printing table 5.

FIG. 5 shows an example of characters printed by a conventional printing apparatus. Here, JIS 24 dot fonts (24 wards, 70 points) and celebrations (29 wards, 43 points) are cited. In FIG. 5, reference numeral 7 is the coordinates (X0
1 to X24), and 8 is the coordinates (Y01 to Y49) of the motor for moving the head. For example, in the motor coordinate 8 (Y01), the print head coordinate 7 (X01) turns off the head, and the print head coordinate 7 (X05) turns the head on to print a print character.

FIG. 6 is a timing chart of a conventional printing device. (A) is the case of high-quality paper, (b) is the paste paper, and (c) is the case of Japanese paper. 9 and 10 are used according to the performance of the head driver depending on whether or not the print head coordinate 7 (X01 to X24) is divided into two. If it is not divided, only 9 is used for print head coordinates 7 (X01 to X2
Output the data to 4), and if the data is divided, use 9 to output the data to coordinates 7 (X01 to X12) of the print head.
0 is used to output data to the coordinate 7 (X13 to X24) of the print head. Reference numerals 11 and 12 are times when the head is turned on (hereinafter referred to as on-time). If one printout produces a good print result, only 11 is used. If two printouts are required, 11 and 12 are used. Here, there is no difference in the on-time of (a), (b), and (c) depending on the material of the paper.

[0006]

However, in the above-mentioned conventional configuration, depending on the material of the paper, (a), (b), (c)
Since there is no difference in the on-time of the above, there was a problem that the printing result when printing was greatly different.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a printing apparatus which can obtain a good printing result depending on the material of the paper.

[0008]

In order to achieve the above object, the present invention has an input section for inputting print data, a control section for establishing print characters from print data input at the input section, and a print data A display section for displaying printed characters,
It has a configuration including a detection unit that detects the material of the set printing paper and a printing unit that prints the displayed printing characters.

[0009]

With the above-described structure, the present invention functions to change the on-time according to the material of the printing paper detected by the detection unit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a printing apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the printing apparatus, and FIG. 3 is a timing chart of print head operation in the printing apparatus.

In FIG. 1, print data such as hiragana / alphanumeric characters / symbols input from the input unit 13 is displayed on the liquid crystal display of the display unit 14, and thereafter, kanji / hiragana / alphanumeric characters.
It is confirmed as a print character such as a symbol. The detection unit 19 detects the material of the paper by scanning the surface of the paper magnified by the magnifying lens at several points and averaging them. The printing unit 15 selects the optimum on-time for the detected paper material and moves in the direction of the arrow 16 to print the fixed print character on the print paper 18 such as a fun paper placed on the print stand 17. .

In FIG. 2, the print data input from the input unit 13 is sent to the input control circuit 21 of the control unit 20 and then to the display control circuit 23 via the central processing circuit 22 and to the display unit 14. Is displayed. When the conversion key of the input unit 13 is pressed, the central processing circuit 22 calls the conversion candidate of the Chinese character corresponding to the print data from the ROM 24 and sends it to the display control circuit 23 to display the conversion candidate of the Chinese character on the display unit 14. The Chinese character is confirmed by pressing the execution key of the input unit 13, and the central processing circuit 22 stores the data of the printing character in the RAM 25. When the print key of the input unit 13 is pressed, the detection unit 19 scans the surface of the sheet magnified by the magnifying lens at several points, the scan data is sent to the detection control circuit 27, and the central processing circuit 22 averages the scan data. The optimum on-time is selected and the on-time data is stored in the RAM 25. After that, the central processing circuit 22
Calls the print character data and the on-time data from the RAM 25, calls the font data from the ROM 24, and sends the font data to the print control circuit 26.
The printing unit 15 controlled to print the printing characters.

In FIG. 3, (a) is a timing chart of print head operation in the case of high-quality paper, (b) paste paper, and (c) is Japanese paper. The output method is the same as in FIG. 6, but the length of on-time differs depending on the material of the paper. Since 28 is a high-quality paper with a very smooth surface, the on-time is short. The surface of No. 29 is a little rough paper, so the on-time is a little longer. Since 30 is a Japanese paper with a very rough surface, the on-time is considerably long. In this way, the length of on-time is changed according to the material of the paper.

As described above, according to this embodiment, the material of the paper to be printed is detected, and the printing on-time corresponding to the material is selected for printing, so that good printing can be performed regardless of the material of the paper.

In the above description, the case of two-division output and two-shot output has been described. However, in the present invention, the output may be divided into three or more, or the output may be three or more. The combination is not limited to the present embodiment and can be freely combined. The types of on-time may be four or more. Further, a method of changing the print history depending on the material of the paper may be used. In addition, the paper material may be detected by scanning the surface of the paper without using a magnifying lens.
A method of detecting the material of the paper by the reflectance of the optical sensor may be used, and any device can be used as long as the surface condition of the paper can be detected.

[0017]

As is apparent from the above embodiments, according to the present invention, the material of the paper can be detected and the optimum on-time can be selected according to the difference of the material, so that a printing apparatus with a very good printing result can be obtained. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a printing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the printing apparatus.

FIG. 3 is a timing chart of print head operation in the printing apparatus.

FIG. 4 is a perspective view of a conventional printing device.

FIG. 5 is a diagram showing an example of characters printed by a conventional printing device.

FIG. 6 is a timing chart of print head operation in a conventional printing apparatus.

[Explanation of symbols]

 13 input unit 14 display unit 15 printing unit 19 detection unit 20 control unit

Claims (1)

[Claims] 1. An input unit for inputting print data, a control unit for establishing print characters from the print data input in the input unit, a display unit for displaying print data, print characters, etc., and set printing. A printing apparatus comprising a detection unit for detecting the material of the paper and a printing unit for printing the displayed print character, and changing the printing method according to the material of the paper detected by the detection unit.