JPS63242560A - Italic letter forming method - Google Patents

Abstract

PURPOSE:To eliminate the need for providing italic font data in an internal memory and to enable a memory capacity to be saved correspondingly, by a method wherein information of inclination as italic letters is imparted for every upright font letter. CONSTITUTION:When upright letters are inclined to be italic, optimum inclination information are imparted to respective letters to be inclined differently from each other. Each one bit of the inclination information corresponds to a lengthwise font data group. In a positive logic, the inclination information is so made that, at 1 bit, upper bit groups from the 1 bit shift rightwards by the amount of 1 bit to the lower bit groups. For example, if font data 2 is longitudinally divided into blocks by 3 dots, 3 dots, and 2 dots from the lower position and the inclination is imparted so that the blocks shift rightwards respectively to the lower blocks by the amount of 1 dot, the inclination information is represented by 01001000(1). In this manner, italic font data can be formed from upright font data, which eliminates the need for providing the italic font data in an internal memory.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for creating italic characters for dot matrix printers.

[Prior Art] The conventional method for creating italic characters in dot matrix printers is to create italic characters in addition to upright characters by adding a slant to the upright characters, and storing the italic characters themselves in memory as font data. In the case of italic character printing, the italic characters are printed by printing the font data as is as print data.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, all the font data for italic characters is stored in the internal memory, so the corresponding memory capacity must be retained internally. There is a problem.

The present invention is intended to solve these problems, and its purpose is to create italic font data from upright font data, thereby eliminating the need to store italic font data in internal memory. The purpose is to save memory capacity.

[Means for Solving the Problems] The italic character generation method of the present invention allows each character of an upright font to have slope information as an italic character, thereby tilting the upright character.
Features Featured in Creating Italic Characters [Operation] According to the above means of the present invention, italic characters having different slopes can be created for each upright character.

[Example] Fig. 1 shows character data consisting of 8 dots in the vertical direction and 12 dots in the horizontal direction. When upright characters are tilted to make it italic, the tilt differs depending on the character.
Provide optimal slope information for each character.

FIG. 2 is a diagram showing the relationship between slant information and upright character data.

1 represents slant information, and 2 represents the relationship between font data slanted by the slant information.

Each bit of tilt information corresponds to a vertical data group of photo data. The slope information has a bit of 1 in positive logic.
Assume that, with respect to the lower bit group, the bit group equal to or higher than that bit is shifted to the right by one bit.

Figure f53 is a diagram with a further slope added. The font data is divided into blocks of 3 dots, 3 dots, and 2 dots from the bottom in the vertical direction, and 1 for each lower block.
When shifting to the right by one bit and giving a slope, the slope information is expressed as 01001000 (2). The above example in FIG. 3 describes the letter "T".

Here, we further show the character //Q //, @4
The figure shows the upright font data of "a". When this is tilted by the above method, it becomes as shown in the MS5 diagram. The slope information here is 00001000 (
2) It is different from 〃T〃.

In this way, by setting an appropriate value for each character, it is possible to give each character an appropriate slope as an italic character.

[Effects of the Invention] As described above, according to the present invention, by creating italic font data from upright font data, it is no longer necessary to store italic font data in the internal memory, and the memory for that amount is saved. Capacity can be saved.

[Brief explanation of the drawing]

ttS1 is a diagram showing the font structure of draft upright. FIG. 2 is a diagram showing slant information and italic font data that is slanted accordingly. FIG. 3 is a diagram showing a state in which FIG. 2 is further tilted. Figure tjS4 is a diagram showing the character pattern /I jl //. Figure t55 is a diagram showing the tilted state. Black circle...Print pattern...Slant information 2...Italicized upright font data or more Applicant: Seiko Epson Co., Ltd. Agent, Patent attorney Tsutomu Mogami and 1 other person"■ 2nd prisoner 3rd factor 4 = 5th factor

Claims (1)

[Claims] In the character creation method of dot matrix printers,
An italic character characterized by adding slope information for italic characters to upright font data, slanting the upright font based on that information, and performing italic processing in a method suitable for each character. How to make.