JPS6071265A - Printer - Google Patents

Abstract

PURPOSE:To prevent blurring and missing in the printing by a method wherein a registration pattern memorized in an RAM is read out to detect printing signals for the same line on columns adjacent to each other and one of said signals is rewritten to non-printing signal according to the signals. CONSTITUTION:A CPU2 in a printer 1 receives a registration pattern keyed-in from a key board 3 through a host computer 4 and when a dot pattern continued in the direction of moving a print head exists, the second dot appearing continuously in this direction is deleted automatically and the dot pattern is recorded into an RAM memory 5 while a pattern data registered is read out with the CPU2 to be fed to a control circuit 6, which drives an output unit 7 to perform a printing of a specified registration pattern. An ROM memory 8 stores dot patterns of characters used in the printing and a program for controlling the CPU2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a printer, particularly a dot printer, in which a user registers a pattern at a higher than normal speed (hereinafter referred to as high speed mode), e.g. The present invention relates to a printer that can print clearly even when a continuous dot signal is erroneously registered in the moving direction of a print head when printing at twice the speed.

(Technical background and problems) When printing in high-speed mode using a dot printer, it is devised to prevent a continuous dot Φ pattern from appearing in the direction of movement of the print head.

However, if the user of the dot printer mistakenly registers all the characters (characters that include consecutive dots in the printing direction) (turns) and prints them in high-speed mode, after printing one dot, the next dot will be printed. A signal is supplied to print the characters, but the pins of the print head do not follow correctly, resulting in printing force fading or missing characters.In such cases, conventionally, when printing in high-speed mode,
(Users found print power scratches or printing omissions on turns and corrected the character pattern. For this reason, when the printer's printer prints the registered pattern in full high-speed mode, the print power scratches, etc. Moreover, if an error is found in the registered pattern, it must be corrected, resulting in a troublesome and time-consuming problem.

(Objective and Structure of the Invention) An object of the present invention is to solve the aforementioned problems, and even if a printer user mistakenly registers a continuous dot pattern in the direction of movement of the print head, By detecting consecutive dots (dots) and automatically deleting -10,000 dots, it is possible to prevent print force scratches and eliminate the need to check (and correct) registered patterns for errors. The printer of the present invention has a RAM in which a user can store all registered patterns of his or her choice, and a control unit that prints the registered patterns stored in the RAM (supplies the registered patterns to the print head in high-speed mode and controls the printing). a detection unit that detects signals in the same row of adjacent digits that are both print signals in order to sequentially read and print the registered patterns stored in the previous RAM;
The apparatus is characterized in that it has a rewriting section that rewrites one of the signals in the same row of the adjacent digits to a non-printing signal based on the signal from the detection section.

(Embodiment J of the Invention The present invention will be described in detail with reference to the following figure th11!).

Figure 1 is a configuration diagram of the printer, Figure 2 is an explanatory diagram for storing registered patterns in the printer, Figure 3 is a flowchart of a 1% example of a conventional printer, and Figure 4 is a 1% example of a conventional printer. Embodiment FIG. 5 shows one embodiment of the present invention, and FIG. 6 shows four charts showing the operation of the printer of the present invention.

In the figure, 1 is a printer, 2 is a CPU, 3 is a keyboard, 4
5 is a host computer, 5 is a RAM memory, 6 is a control circuit, 7 is an output device, and 8 is a ROM memory t-.

In FIG. 1, numeral 1 in the figure is a printer. printer l
The CPU 2 in the computer receives all registered patterns entered manually from the keyboard 3 via the host computer 4,
The received registered pattern data is stored in the kRAM memory 5. The registered pattern data and the like stored in the 1-CAM memory 5 are read out by the CPU 2 and supplied to the control circuit 6. The control circuit 6 drives the output device 7.
Then, print a predetermined registered pattern. The ROM memory 8 stores dot patterns of characters used for printing, programs to be controlled by the CPU 2i, and the like.

FIG. 2 is an explanatory diagram for storing all registered patterns in the printer 1, in which the dot data to be printed for each digit of the registered pattern input from the keyboard 3 is sequentially stored in ItA.
It shows how it is stored in the M memory 5. Below, 1
A case in which the entire registered pattern is printed using a dot printer consisting of 8 dots will be briefly described.

Now, in FIG. 2(a), consider the case where X digits are stored sequentially from the address "ADH 10" in the RAM to the address @ADH+(X-1)" using the registered pattern t and input from the keyboard 3. Figure 2 (t12) shows one column (digit) 1 printed at a time with a dot printer, e.g. (x=1.y=1) or x=1 t y=8
) is stored as dot data D(1) expressed by the formula shown at address "ADR+0" in FIG. 2(a). The general formula is shown below.

D(x)=2'? X P (x, y) river −
・(1)-1 Here, X indicates the digit ak to be printed by the dot printer, and is an integer value up to X=1.2...X on the printing layer. y indicates the number of lines printed at one time using a dot printer, and Y=
It is an integer value of 1, 2, ..., up to 8. P
(x e y ) is a function that takes the value 'l' when it should be printed, and takes the value '10' when it is not to be printed.For example, in Figure 2 (when x = = 1st digit is 7=2 and 6
Since it is printed on the line , substituting it into formula (1) and rearranging it produces the following formula.

D (1) 2’ + 2” = 48H Here, H is a symbol expressed in hexadecimal.

In the same manner as explained above, D(2) to D(
The value of x) is input from the keyboard 3 and is stored in the RAM memory 5 as the dot fist data of the registered pattern.

FIG. 3 shows a flowchart of one embodiment of a conventional printer. In the figure, the user downloads/loads, that is, inputs all dot patterns to be printed 71m from the keyboard 3 and stores them in the RAM memory 5.

(2) is stored in the print digit number management register with the initial value x=1kcpu2 of the number of digits to be printed.

■ Outputs dot data D (X)' of the registered pattern corresponding to each digit from the RAM memory 5 to the print head,
Perform all printing.

(2) adds 1 to the contents of the print digit number management register of the CPU 2 in order to print the next digit.

■: If the same number of print digits in the IT register is smaller than the final print digit .

In this way, even when printing at normal printing speed or high-speed mode, the conventional printer always sequentially reads the registered patterns stored in the RAM memory 5 and prints all the dots using the print head. For this reason, if the dot kRAM memory 5 is registered in the dot printing direction, that is, in the X direction, using the same pin of the print head to print undesirably continuously, the print speed will be set to high-speed mode, for example, twice the normal printing speed. If dots are printed in this way, the bin in the printer head cannot follow the print of the second and subsequent dots in a row, resulting in printing force streaks or missing prints.

For example, if dots such as the daytime and black dots shown in FIG. 4(a) are stored in the RAM memory 5 in the form shown in FIG. Due to the above-mentioned reasons, there is a problem in that the printing power is smeared or the printing is missing at the black dot locations.

Therefore, in the present invention, as shown in FIG. 5(A), for example, the user can use the
Even if it is stored in the M memory 5, if there is a continuous dot pattern in the direction of movement of the print head, in order to prevent printing force scratches or printing omissions 7 from occurring when printing in the above-mentioned fast mode. Then, the second dot that appears consecutively in the direction of print head movement is automatically deleted. This will be explained below.

The second dots that appeared consecutively in the printing direction shown in Fig. 4 (J) for black were completely deleted and the dot pattern shown in Fig. 5 (A) was re-examined. Specifically, the user stored the illustrated data D(x) in the RAM memory 5 in FIG.
Then, the data D(xi') shown in FIG. If this is done, no continuous dots will appear in the printing direction, so all dots will always be printed clearly.

The present invention will be explained in detail based on FIG.

In the figure, (2) indicates that the user performs a download as described in (2) of FIG.

(2) is rewritten according to the present invention, so σ] Initial value of the number of printing digits x == 1 is stored in the number of printing digits management register of k c p u 2.

■The present invention allows continuous dots in the printing direction to be RA.
Whether it is registered in the M memory 5 kl [initial value of the number of print lines y = 1'i for next determination and correction] l''Cpu
Store it in the print line number management register of 2.

(2) takes the AND logic t between D (x t y) and ])(x+1.)'. As a result, 41 adjacent rows in the same row
It is determined whether or not consecutive dot-not-turns are registered in the RAM memory 5.

■ determines whether the AND logic of ■ is equal to I'1'' (resultant), and if YES, performs the processing meeting of ■ (.

In the case of NO, perform the process described in (2) above.

■ is D(xty) = D(x+l, y) = 1, so
Data D(x+j) to be written.

y) = 0' (Stored in cp u 2 (.

This makes it possible to prevent print force scratches or missing prints when printing in high speed mode.

■ increases the value t1 of the number of rows y. As a result, the contents of the CPU2 yen line number management register are increased by 1.

■ determines that the value of the number of rows y is y48, and if YES, ■
Repeat the following processing, and if NO, perform the process (■).

(2) increases the number of digits x' (1). This increases the contents of the number of digits management register by 1.

O determines that the value of digit ax is x l-X'<, Y E S
If the answer is ``co'', the following process is repeated; if the answer is NO, the check of the registered pattern stored in the RAM memory 5 has been completed, so the process ``2'' is performed.

◎ indicates that an error in the registered pattern stored in the RAM memory 5 has been stored in the CPU 2 in the process ① described above, so this data is rewritten in the iRAM memory 5 and the registered pattern is corrected.

O is stored in the initial value X and l' of the number of digits of the registered pattern in the digit number management register.

O is read out in units of digits from the corrected registered pattern kRAM memory 5 and is driven via the control circuit 6 to the print pedestal in the output device 7.

0 increases the number of digits by 1.

@ is the judgment Wfrxl whether the number of printing digits X has finished printing the last digit Xk of the registered pattern stored in the RAM memory 5.
X't-Do. If YES, end printing (ENI)
). In the case of NO, the process returns to O and below.

(Effects of the Invention) As explained above (according to the present invention), even if the printer user stores an incorrect registered pattern in the RAM memory 5 of all printers, the printing direction will be changed before printing in the high speed mode. Since seven consecutive dots are dynamically corrected, there is no need to check for print force smudges or missing prints after printing and correct the registered pattern, as is the case in the past, and clear print can always be obtained.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of the printer, Figure 2 is an explanatory diagram for storing registered patterns in the printer, Figure 3 is a flowchart of an embodiment of a conventional printer, and Figure 4 is an embodiment of a conventional printer. , FIG. 5 shows a first embodiment of the invention, and FIG. 6 shows the operation of the printer of the invention. In the figure, l is the printer, 2 is the CPU, 3 is the keyboard, 4
is the host computer, 5 is ft AM memory, 6
7 represents a control circuit, 7 represents an output device, and 8 represents a ROM memory. Patent Applicant Narps Electric Co., Ltd. Agent 9P Burial Officer Mori 1) Hiroshi (3 others) '$1121 Fig. 2 (Iji (Roff No. 3 (2) Fig. 4 (A) ) (roλ − 竀χ Fig. 6

Claims (1)

[Claims] A RAM in which the user can store any registered pattern, and a mark f4 for the registered pattern stored in the RAM.
In a printer having a control unit that supplies the print head in high-speed mode and controls printing, the registered patterns stored in the RAM are sequentially read out and printed (if the 'IW numbers in the same line of adjacent digits are both The present invention includes a detection unit that detects a sound that is a print signal, and a rewriting unit that rewrites 10,000 of the signals in the same row of adjacent digits into non-print signals based on the signal from the detection unit. Printer with t% characteristics.