DE3104794A1 - Matrix printing device for teleprinters - Google Patents

Description

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Mosaic printing equipment for teleprinters

field of use

The invention relates to a mosaic printing device for Teleprinters and similar office machines with remote control for printing a recording medium in portrait and landscape format, while maintaining the feed direction.

Known technical solutions

It is known to design printing devices for a maximum paper width and to supply smaller formats if necessary. For printing devices that are remotely controlled, such as the z. B · is the case with teleprinters, magazines with corresponding controllable feed devices are required for the individual formats. With the widespread use of the paper stock in Hollenbach form a subsequent trimming must be performed for reduced formats, which except additional manual effort substantial paper losses has _β is also known become a dot matrix printer according to DB-CB 2825321, with the characters of different size. Any position on a recording medium, regardless of the order in which the characters are entered in the system printer, can be printed.

I FOLLOW-UP j

This printer, which is intended for universal character formatting and positioning, is very flexible due to its Possible application associated with a correspondingly high technical and economic effort and therefore for the especially unsuitable for tasks related to telex technology.

Object of the invention

The aim of the invention is to eliminate those listed Disadvantages, especially in that the printing of a recording medium with as little additional effort as possible To be able to do this in portrait and landscape format, as is the case with modern teletext services applicable devices,

Essence of the invention

The invention is based on the object of ensuring for teleprinters and similar office machines that work with mosaic printing devices and text storage that the text is coded character by character without complex mechanical positioning arrangements, remotely controllable and without manual intervention in portrait and landscape format, while the feed direction of the recording medium remains the same , can be printed out ₀

The features of the invention are that the printing elements of the mosaic printing device are arranged at intervals which are equal to the advance of the print head and the recording medium or that they are common Have a divider and this is also approximately divisor of the required character height and character width as well as the character spacing and the text line spacing · The memory organization is selected in such a way that the characters to be printed for one format along the text columns and for the other formats are available along the lines of text.

NACHQEREIOHT (

A. Another feature of the invention is that a text to be printed as soon as it is entered in the text memory by evaluating the control characters contained therein "new line" and "new page" are prepared for retrieval along the text columns or the text lines.

The control of the printing elements takes place via a decoder, which is responsible for printing in one format the character columns and for printing in the other format specifies the assignment of the character lines.

The number of simultaneously acting pressure elements corresponds to the largest in the horizontal or vertical Sighting of any character required baster score.

Embodiment

The invention will be explained below using an exemplary embodiment.

In the accompanying drawings shows:

1 shows a basic illustration of the printing device and printing in two formats

Fig. 2 is a block diagram of the mosaic printing device

3 shows the memory allocation for text and memo memories

Figure 4 Character line and column format

Fig. 5 Control algorithm for printing in portrait format

Fig. 6 Control algorithm for printing in landscape format

A mosaic printing device according to the invention as shown in FIG. 1 consists of a parallel to the surface of a recording medium 1 movable print head 2, the printing elements 3 as Contains needles that are electromagnetically used for the marking are excited and printed on the recording medium 1 against an ink ribbon (not shown).

NACHQEREIOHT j * "· *

The printing elements 3 are in a line that runs perpendicular to the direction of movement of the print head 2, in Spacing a from one another. As can be seen from FIG. 2, the mosaic printing device also contains a text memory 8 with a capacity of 4 Kbytes, a 'memo memory 9 with a capacity of 3 (number of lines +1) bytes and a switchable decoder 10 which, in one operating mode, decodes the individual items in FIG character columns 7 shown and in the other the decoding of the individual character lines 6 one after the other undertakes. A control device 11 receives the print head 2 or the recording medium 1 moving stepper motors 13 {14 current pulses and cause a feed a ·

A microprocessor available for other functions, symbolically represented by the control device 11, causes the characters to be transmitted from and to the text memory 8, memo memory 9 »decoder 10 for evaluating format control characters" new line "and" new page " and is used to control the stepper motors 13; 14 and the printing elements 3 · Such an arrangement is mostly for controlling the printing device in question already available and can be used for these functions.

For the memory allocation according to FIG. 3, the characters are now entered into the text memory one after the other in the usual manner, so that the addresses d ^, d ₂ , d ^ ... d _n (n = number of characters in the text) indicate the textual sequence.

At the same time, the starting addresses of each line of text are entered into the memo memory 9. Included

- the addresses h. ^ the more significant address part H

- the addresses h _i2 the low-order address part L

- the addresses h ^ ~ the length Z of each text line 4, where i = 1 ... r means the number of text lines r.

SUBSEQUENT "φ *.

These data are obtained by evaluating the format control characters "new line ^11" and paying off the characters in between.

Under the address h _{r +} ^ the code byte for the end of the text is obtained by evaluating the format control character "new page", under h _{r + 2} the number of text lines 4 = longest text column 5 = number of format control characters "new line" and under ho the largest number of characters occurring 4 β longest text line 4 indicated per line of text. If the print is now to take place in the usual portrait format 1.1, ie the characters of each text line 4 are to be written one after the other, the addresses are called from the text memory in the sequence d ^,. ·· d and in the known manner in m character columns 7 according to 4 printed, wherein after each printed character column 7 a pulse is fed to the stepping motor 13 of the print head 2 and after printing the last character column 7 wm pulses, whereby the character space is created. After the entire text part 4 has been printed, the stepping motor 14 of the recording medium 1 receives ν pulses to generate the text line spacing ν. a, the print head is returned to the beginning of the text line 4 and the character printing is continued until the end of the text, so that the line / character format shown in FIG. 4 is produced according to the control algorithm shown in FIG.

When printing in landscape orientation 1.2 · d. H. the characters each Text columns 5 are printed one after the other, the stepping motor 13 of the print head 2 is controlled with current pulses, which, starting from the right hand of the recording medium, generate a step-by-step feed a to the left. The characters are called up by evaluating the addresses contained in the memo memory 9 in the following order:

j NACHQEREtCHT "_ ft,

1, text column 2nd text column

nag - * t ^ 2 ^/ + ^Z im a x - ¹ '"* vV + ² I max" ^Λ ,

last column of text

The η character lines 6 of the character called up are printed one after the other in a known manner, with a pulse being fed to the stepping motor 13 of the print head 2 after each character line 6. After each completely printed character ν - η current pulses are given to the stepping motor 13 of the print head 2, whereby the space between the lines of text is created. After printing out the entire text column 5, which is recognized by evaluating the length of the text column 5 in address h + 2, the character spacing w © a is achieved by w current pulses on the stepping motor 14 of the recording medium 1 and the print head 2 by the stepping motor 13 returned to the beginning of the text column £. Reaching the last text column 5 is recognized by the fact that the number of the processed text column 5 is equal to the largest occurring length of a text line 4 _{in address h r + 3.}

To take into account incompletely occupied lines of text, printing is suppressed, so that the stepping motor 13 of the print head 2 _{f is} controlled by ν current pulses, the line feed ν. a without imprint. The print suppression takes effect when the number of the edited text column 5 is greater than the length of the edited text line 4 according to address h ^ ^. According to the Pig. The control algorithm shown in Figure 6 for "printing text columns" (landscape format) is created in Pig. 4 shown character / line format rotated 90 ° clockwise »

31 0Λ794

SUBMITTED

For! The realization of a character grid 5 x 7> a character height η © a of approx. 3 πίπα and the übliciiea character spacing w · a of 2.5 ^ nm as well as the simple text line spacing ν. a of 4.23 mm, the following dimensions can be selected will;

Q = 0.423 mm (= 1/60 inch) = needle spacing

= Advance of the print head

α feed of the recording medium

in = 5 »character width 5 a = 2.12 mm η = 7 »character height 7 a - 2.96 ram w = 6, character spacing 6 a = 2.54 mm ν = 10, simple text line spacing 1Oa = 4.23

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Claims (4)

Patent claims j SUBSEQUENTLY] 1. Mos pressing device for teleprinters and the like Office machines with remote control for printing of a recording medium in portrait and landscape format while maintaining the feed direction, wherein the smaller side of the intended format corresponds to the width of the recording medium, consisting of individual printing elements arranged in a movable print head in connection with a text memory and a note memory, characterized in that the pressure elements (3) are arranged at intervals (a) are equal to the feed (a) of the printhead (2) and of the recording medium (1) are or that they have a common divider and this also approximates Divisor of the required character height (n · a) and the character width (m · a) as well as the character spacing (w a) and the text line spacing (v, a) and that the storage organization is chosen in such a way that that the characters to be printed for one format along the lines of text (4) and for the other format can be called up along the text columns (5). FOLLOW-UP YEAR 2. Mos aik pressure device according to point 1, characterized in that that a text to be printed as soon as it is entered in the text memory (8) by evaluation therein Contained control characters "new line" and "new page" for retrieval along the text columns (5) "or the text lines (4) is prepared. 3. mosaic printing device according to item 1 and 2, characterized in that for controlling the printing elements (3) a decoder (10) is provided which, for printing in one format, assigns the character columns (7) and indicates the occupancy of the character lines (6) for printing in the other format. 4. Mosaic printing device according to items 1 to 3 »characterized in that the number of simultaneously acting Printing elements (3) of the largest required in a horizontal or vertical viewing of any character Baster score corresponds.