JP4432124B2 - Printer apparatus and control method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printer apparatus having a print head capable of simultaneously printing a plurality of lines and a control method thereof, and more particularly to a printer apparatus suitable for use in a serial dot matrix type printer apparatus such as an ink jet or wire dot.
[0002]
[Prior art]
Serial dot matrix printers selectively print on paper using ink nozzles and wires (hereinafter referred to as print elements) arranged in a single or multiple rows, and move the print head to generate matrix-type characters. Generate.
[0003]
2. Description of the Related Art Conventionally, in order to improve the printing speed, this type of printer device includes a printing element that is twice or more the normal character height and is configured to simultaneously print a plurality of lines. In such a printer device, printing is started when data corresponding to the number of lines that can be simultaneously printed is received.
[0004]
[Problems to be solved by the invention]
However, there is no problem if it is clear what kind of print data is sent, such as a printer-integrated word processor, but in a general-purpose printer that is connected to a computer or the like, In this case, it is impossible to predict what data is sent at what interval from the host computer, and there is a problem that the printing speed is lowered in some cases. That is, when print data (for example, one line) less than the number of lines that can be printed simultaneously (for example, one line) is sent, it cannot be determined whether or not further print data is sent. It is necessary to set a time longer than the reception time of print data for three lines as a timeout time, and to print the one line when this time elapses. For this reason, there is a problem in that the printing speed is reduced when print data equal to or less than the number of lines that can be printed at the same time is sent, and it is difficult for the user to grasp when printing is performed and the usability is poor.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to improve the printing speed for print data of the number of printable lines or less and to improve the usability of a user in a printer apparatus having a print head capable of simultaneously printing a plurality of lines. is there.
[0006]
[Means for Solving the Problems]
The present invention relates to a printer apparatus having a print head capable of simultaneously printing a plurality of lines. The printer apparatus of the present invention includes a received data storage means for sequentially storing received data transmitted from a host, and an actual print by the print head. mark Character data And has a storage area that is more than twice the number of lines. Print data storage means and print data to be sequentially read out from the received data storage means, to generate the print data to be actually printed by the print head based on the received data, and to store the print data in the print data storage means When at least one line of the print data is stored in the unfolding means and the print data storage means, printing for the one line is started, and the next print data storage means is printed during the one line printing. When the print data for one or a plurality of lines is stored, after the printing for the one line is completed, Based on the number of lines of print data stored in the print data storage means Printing control means for starting printing. As a result, when at least one line of print data is stored in the print data storage means, printing is immediately started regardless of the amount of print data based on the received data transmitted from the host. If the amount of print data based on the received data is less than the number of lines that can be printed at the same time, the print speed is improved.
[0007]
The printer device of the present invention is a transmission device that is transmitted from a host and that sequentially stores reception data including at least a character code, and a character data group storage that stores a character data group corresponding to the character code. Means for actually printing with the print head mark Character data And has a storage area that is more than twice the number of lines. The print data storage means and the received data stored in the received data storage means are sequentially read out, corresponding to the character mode included in the received data, and based on the character data group stored in the character data group storage means Generating the print data to be actually printed by the print head, storing the print data in the print data storage means, and when the print data for at least one line is stored in the print data storage means Printing of the one line is started, and when the print data for the next one or more lines is stored in the print data storage means during the printing of the one line, the printing of the one line is performed. After finishing Based on the number of lines of print data stored in the print data storage means And a printing control means for starting printing.
[0008]
Further, the printer device of the present invention is transmitted from the host, and receives data storage means for sequentially storing received data including at least a control command or a print line feed command, and for actually printing with the print head. mark Character data And has a storage area that is more than twice the number of lines. Print data storage means and print data to be sequentially read out from the received data storage means, to generate the print data to be actually printed by the print head based on the received data, and to store the print data in the print data storage means The received data stored in the received data storage means at the time when at least one line of the print data is stored in the expansion means and the print data storage means is based on at least the control command or the print line feed command. A print control unit that calculates whether the print data corresponds to the line of print data, and sets the number of print lines of the print data stored in the print data storage unit according to the result, and performs printing. You can also
Further, in the above-described configuration, the print control means is configured such that the received data stored in the received data storage means when at least one line of the print data is stored in the print data storage means is at least the control command. Or when it is determined that the print data does not correspond to one line based on the print line feed command, the print data stored in the print data storage means Based on the number of rows It can also be set as the structure which performs printing.
In this case, when the print data based on the received data stored in the received data storage means is less than the data amount for one line, the print data already stored in the print data storage means can be printed quickly. As a result, the printing speed is improved.
[0009]
The present invention also relates to a method for controlling a printer apparatus having a print head that enables printing of a plurality of lines at the same time, the step of sequentially storing received data transmitted from a host in received data storage means, and the received data storage Sequentially reading the received data of the means, based on the received data, generating the print data to be actually printed by the print head, It has a storage area with more than double the number of lines A step of storing in the print data storage means, a step of starting printing of the one line when the print data of at least one line is stored in the print data storage means, and during the printing of the one line When the print data for the next one or more lines is stored in the print data storage means, after the printing for the one line is completed, Based on the number of lines of print data stored in the print data storage means And a step of starting printing.
[0010]
Furthermore, a method for controlling a printer apparatus according to the present invention includes a print head capable of simultaneously printing a plurality of lines and a character data group storage unit storing character data groups corresponding to character codes. And a step of sequentially storing received data including at least the character code in the received data storage means, which is transmitted from the host, and sequentially reading the received data in the received data storage means and including the received data in the received data The print data to be actually printed by the print head based on the character data group stored in the character data group storage means, It has a storage area with more than double the number of lines A step of storing in the print data storage means, a step of starting printing of the one line when the print data of at least one line is stored in the print data storage means, and during the printing of the one line When the print data for the next one or more lines is stored in the print data storage means, after the printing for the one line is completed, Based on the number of lines of print data stored in the print data storage means And a step of starting printing.
[0011]
According to another aspect of the present invention, there is provided a method for controlling a printer apparatus, comprising: a step of sequentially storing received data including at least a control command or a print line feed command in a received data storage means; Sequentially reading the received data, based on the received data, generating the print data to be actually printed by the print head, It has a storage area with more than double the number of lines A step of storing in the print data storage means; and at least one line of the print data stored in the print data storage means, the received data stored in the received data storage means is at least the control command or the Calculating the number of lines corresponding to the print data based on a print line feed command, and setting the number of print lines of the print data stored in the print data storage unit according to the result to perform printing; and It can also comprise.
In the process of performing printing in the above-described control method of the printer device,
The received data stored in the received data storage means at the time when at least one line of the print data is stored in the print data storage means is based on at least the control command or the print line feed command. When it is determined that the print data is not suitable, the print data stored in the print data storage means Based on the number of rows Printing can also be performed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a printer apparatus according to the present invention. Hereinafter, an example in which the present invention is applied to an inkjet serial dot matrix printer connected to a host computer (hereinafter referred to as a host PC) will be described.
[0013]
In FIG. 1, a printer device 1 includes a printing mechanism unit 2, a RAM 3 that functions as a reception buffer 3a and a printing buffer 3b, a program ROM 4, a font ROM 5, a CPU 6 that controls the entire printer device, and an interface (hereinafter referred to as I). / F) 7. The CPU 6 is connected to the RAM 3 serving as a working storage area and the program ROM 4 storing a control program and the like, and controls the printer apparatus 1. The printing mechanism unit 2 is a mechanism part for conveying paper and printing on the paper, and includes a print head, a head carriage, a paper feed mechanism, and the like. In one embodiment, a print head of an ink jet printer has a nozzle row of 24 dots formed in a single vertical column, thereby enabling printing for three lines at the same time. That is, each character is composed of 8 dots vertically, and the character is formed in the column direction by moving the print head by the carriage while selectively ejecting ink from each nozzle.
[0014]
The reception buffer 3a is a FIFO (first-in first-out) memory area that can temporarily store data received from the host PC 8 via the I / F 7. When data is sent from the host PC 8, they are sequentially stored in the reception buffer 3a, sequentially read from the previously received data, and subjected to processing by the CPU 6.
[0015]
Here, the data printed based on the data transmitted from the host PC 8 includes character data and bit image data. When the data to be printed is character data, the transmitted data is a character decoration command sequence for designating a character code, character size, and the like. FIG. 2A shows an example of a character data string transmitted from the host. In the figure, one section corresponds to one byte, and one character code (A, B, C, etc.) is represented by one byte. Here, “GS! N” indicates that the character size specified by the character code after the command is vertically [n lower 4 bits + 1] times (1 to 8 times) and horizontally [n upper 4 bits + 1] times (1 This is a command to be specified as (-8 times). Therefore, “GS! 10h” in the figure specifies that the characters “X, Y, Z” are printed in double width. “LF” is a command meaning a print line feed.
[0016]
When the data to be printed is bit image data, the data transmitted from the host PC 8 is actually a bit image data to be printed and a control command sequence for making the print control of the printer device correspond to the bit image data. is there. FIG. 2B shows an example of a bit image data string transmitted from the host. Again, one section represents 1 byte, and d1, d2, d3. . . Is bit image data expressed in 1-byte units. Here, “ESC * m nL nH” is a command for designating that the data is image data specified by m, nL, and nH. “M” designates the bit image mode, that is, the dot density in the horizontal direction of the image data to be printed. When m = 0, every other dot in the horizontal direction, and when m = 1, it is continuously developed without any gap in the horizontal direction. In FIG. 3, image data d1, d2, d3. . . The arrangement of printing was shown. In a print head having 24 nozzles in the vertical direction and capable of simultaneously printing 3 columns of 8 dots vertically, when m = 1 is designated, the image data d1, d2, d3. . . Will be printed.
[0017]
The number of image data is specified by nL and nH. In the embodiment, the number of data is expressed by 4-digit hexadecimal data (nL: lower 2 digits, nH: upper 2 digits). That is, nH = (n _Four n _Three ) _h , NL = (n ₂ n ₁ ) _h Then, the number of data is n _Four × 16 ^Three + N _Three × 16 ² + N ₂ × 16 ¹ + N ₁ × 16 ⁰ It becomes. For example, when nL = 0A and nH = 00, the number of data is 10 (d1 to d10).
[0018]
In FIG. 1, a print buffer 3 b is a memory area for storing print data that is actually printed by the print mechanism section 2. The CPU 6 sequentially reads the data in the reception buffer 3a, generates the character or image data to be actually printed according to the character code and control command in the data, and stores it in the print buffer 3b. The font ROM 5 is a read-only memory that stores character font data to be printed. When the data read from the reception buffer 3a is a character code, the CPU 6 reads a character font corresponding to the character code from the font ROM 5 and stores it in the print buffer 3b when generating the character data.
[0019]
As conceptually shown in FIG. 4, the print buffer 3b is logically divided into a plurality of storage areas (buffers Buf1-6), and each buffer Buf1-6 can store print data for one line. Have a size. The number of buffers in the print buffer 3b needs to be at least twice the number of lines that can be printed simultaneously. This is because the next print data can be expanded during printing of three lines. In the print head for three-line printing, six buffers Buf1 to Buf6 are provided.
[0020]
Next, data expansion processing and printing processing in the printer apparatus 1 having the above-described configuration will be described. Note that these processes are realized by the CPU 6 and a program executed thereon. FIG. 5 is a flowchart showing data development processing, and FIG. 6 is a flowchart showing printing processing. The data expansion process is a process for reading data from the reception buffer 3a, generating print data, and sequentially storing the print data in the print buffer 3b. The data expansion process is a process started by an interrupt request to the CPU 6. In these figures, “PrLine” is a variable indicating how many lines the print data stored in the print buffer 3b corresponds to, and two processes are operated in parallel via the variable. “Buf” is a variable for designating the serial number of the buffer Buf to be stored in the print data. The initial value of PrLine is set to “0”, and the initial value of Buf is set to “1”.
[0021]
When data is transmitted from the host PC 8 to the printer device, an interrupt request is generated and the data expansion process shown in FIG. 5 is started. A series of received data stored in the reception buffer 3a is read out, a print data string composed of character data or image data is generated in accordance with a control command in the data, and the first buffer area of the print buffer 3b (FIG. 4). Are stored in the buffer Buf1) (S501). Then, writing to the first buffer Buf1 is performed until print data for one line is generated (S502). The determination that the print data for one line has been generated is made when the first buffer Buf1 is filled with the stored print data or the print line feed command is read. When print data for one line is generated, PrLine indicating the number of print lines is incremented to “1”, and a “Buf” variable for designating a buffer number for storing print data is incremented to “2”. (S503). As a result, when print data for one line or more is sent from the host, the print data is continuously developed in the buffer Buf2 of the print buffer 3b.
[0022]
When PrLine becomes “1” in S503, that is, when print data for one line is accumulated in the print buffer 3b, PrLine is decremented to “0” in the process shown in FIG. 6 (S601, S602). The printing of the data for one line is immediately started (S603). When the printing is completed, the paper is fed by one line (S604).
[0023]
Even during the execution of S602 to S604, the data expansion processing shown in FIG. 5 is continued in parallel. Accordingly, in order to perform the data expansion process during the printing process, the buffer needs to be twice or more the number of lines that can be printed simultaneously. When data is accumulated in the buffer Buf2 and further in the buffer Buf3 during the one-line printing, PrLine is incremented according to the buffer number, that is, the number of accumulated lines (S503). At this time, if the Buf variable is less than 6, Buf is incremented (S504, S505), and data expansion processing is performed. When data is expanded up to the buffer Buf6, Buf is initialized to 1 (S504, S506), and the expanded data is accumulated again from Buf1.
[0024]
In step S605 of FIG. 6, when PrLine becomes 1 or more, simultaneous printing of the number of lines corresponding to the value is executed. For example, if PrLine is “1”, that is, if one line of print data is accumulated during printing, the PrLine is initialized to “0” (S606), and then the print data accumulated in the buffer Buf2 is stored. Printing is performed (S607). Thereafter, sheet feeding for one line is executed (S608). Also, if PrLine is “2”, that is, if print data for two lines is accumulated during printing, PrLine is initialized to “0” (S609), and then the prints accumulated in buffers Buf2 and Buf3 are printed. Data is simultaneously printed (S610). Thereafter, sheet feeding for two lines is executed (S611). Similarly, when PrLine is “3 or more”, 3 is subtracted from PrLine, and the print data accumulated in the buffers Buf2, Buf3, and Buf4 are simultaneously printed (S612 to S614). Then, if print data for one line or more is further accumulated in the print buffer 3b during these printing operations, the above processing is repeated (S605).
[0025]
On the other hand, if the print data for one line is not accumulated in the print buffer 3b during the printing in step S603, the printing process is terminated, and the process waits until PrLine becomes "1" again (S601).
[0026]
7 and 8 are timing charts showing a comparison between the printing process in the conventional printer (FIG. 7A) and the printing process in the embodiment (FIG. 7B). 7 shows a case where print data for three lines is sent from the host PC 8, and FIG. 8 shows a case where print data for one line is sent. In FIG. 7A, in the conventional printer device, when reception of data for three rows is started in the reception buffer (point A in the figure), print data is generated slightly later than this, and the print buffer is sequentially transferred. (B point). When all three lines of print data are generated and stored in the print buffer (point C), simultaneous printing for the three lines is started and finished after a predetermined time (point D).
[0027]
On the other hand, in FIG. 7B, in the printer apparatus according to the present embodiment, printing for one line is started at the point (point C) when the print data for one line is accumulated in the print buffer. After the printing of one line is completed (point D), the remaining two lines are printed simultaneously for two lines (point E). As described above, when printing three lines of data from the standby state, the printer device according to the present embodiment takes a little longer time to print than the conventional printer device. However, this delay time occurs only at the time of the first printing from the standby state, and does not occur thereafter in the case of continuous printing, so there is no practical problem.
[0028]
Next, the printing speeds of the conventional printer and the printer in the present embodiment when printing one line are compared. In FIG. 8A, in the conventional printer apparatus, when reception of data for one line is started in the reception buffer (point A in the figure), print data is generated slightly behind this, and the print buffer is sequentially transferred. (B point). Here, even if the accumulation of data in the print buffer is completed, the printing is not performed immediately, but a waiting for a preset time-out time to elapse. After the timeout time elapses (point C), printing is started and finished after a predetermined time (point D).
[0029]
On the other hand, in FIG. 8B, in the printer apparatus of this embodiment, as in the case of FIG. 7B, immediately after the print data for one line is accumulated in the print buffer (point C), Printing for one line is started. As a result, as compared with the conventional printer, the time required for the printing process for one line is remarkably shortened. For example, when the printer device of the present invention is used for POS (Point Of Sales) and a receipt is printed, it is common to print one line every time one product is input. The effect is very large.
[0030]
Next, a method for controlling a printer apparatus according to another embodiment of the present invention will be described. FIG. 9 is a flowchart showing data expansion processing in the present embodiment, and FIG. 10 is a flowchart of printing processing. The present embodiment includes a procedure for inspecting data in the reception buffer 3a at the time when print data for one line is accumulated in the print buffer 3b and calculating whether there is data for one line or more. It has a feature in that. Hereinafter, this will be described with reference to a flowchart. In the flowchart, “Pr” is a local variable for temporarily storing the number of lines of print data accumulated in the print buffer 3b, and its initial value is “0”. In this embodiment, the printing process is configured so that printing of the number of lines corresponding to the number is simultaneously performed when 1 to 3 are given to the variable PrLine (see FIG. 10).
[0031]
In the first step of the data expansion process, a series of received data stored in the reception buffer 3a is read, and a print data string composed of character data or image data is generated according to a control command in the data, and the print buffer The data is stored in the first buffer area 3b (buffer Buf1 in FIG. 4) (S901). Then, writing to the first buffer Buf1 is performed until print data for one line is generated (S902). When print data for one line is generated, Pr is incremented to “1” (S903). In the next step (S904), since Pr is “1”, the result is “false”, and the data in the reception buffer 3a is checked (S905). The amount of print data is calculated from the control command in the data, and it is determined whether there is print data for one line or more in the reception buffer 3a (S906). If there is a print line feed command in the data in the reception buffer 3a, it is assumed that one line of print data is prepared. At this time, if there is no print data for one line or more in the reception buffer 3a, Pr, that is, “1” is substituted for PrLine (S907). After substitution, Pr is initialized to “0”. When PrLine becomes “1” (S1001), printing of the one line is immediately started in the printing process of FIG. 10 (S1002 to 1004).
[0032]
If there is print data for one line or more in the reception buffer 3a in step S906 in FIG. 9, printing is not performed immediately and Buf is incremented (S908). Then, returning to the beginning of the data expansion process, the data in the reception buffer 3a is expanded (S901). Whether Pr becomes “3” (S904) or when there is no more than one line of data in the reception buffer 3a (S906), the value of Pr (2 or 3) is substituted into PrLine (S907). Then, according to the number set in PrLine, the number of print lines is selected in the print processing of FIG. 10, and printing is performed (S1005 to S1007 or S1008 to S1010).
[0033]
FIG. 11 is a timing chart showing a printing process in the present embodiment. FIG. 11A shows a case where print data for three lines is sent from the host PC 8, and FIG. Each case where data is sent is shown. In FIG. 6A, when reception of data for three rows is started in the reception buffer (point A in the figure), print data is generated slightly behind this and is sequentially stored in the print buffer 3b. (Point B). When the print data for one line is accumulated in the print buffer 3b (point C), the reception buffer 3a is inspected. At this time, the print data for one line has been received in the reception buffer 3a. Further, when the print data of the second line is accumulated in the print buffer 3b (D point), since there is another line of print data in the reception buffer 3a, the printing is similarly suspended. At the time when print data for the third line is accumulated in the print buffer 3b (point E), since there is no new print data in the reception buffer 3a, printing for three lines is performed.
[0034]
Next, processing when print data for one line is sent will be described. In FIG. 5B, when reception of data for one row is started in the reception buffer (point A in the figure), print data is generated slightly behind this and is sequentially stored in the print buffer 3b. (Point B). When the print data for one line is accumulated in the print buffer 3b (point C), the reception buffer 3a is inspected. At this time, since no other print data is received in the reception buffer 3a, the print data in the print buffer 3b is quickly printed.
[0035]
This embodiment requires processing for checking the reception buffer as compared with the previous embodiment, but the time for checking the reception buffer is generally longer than the time for operating the printing mechanism once. Therefore, there are few adverse effects due to this, and there is an advantage that processing when print data for three lines is sent is accelerated.
[0036]
As mentioned above, although embodiment of this invention was described along drawing, this invention is not limited to the matter shown in the said embodiment, Description of a claim and detailed description of invention, and well-known technique Based on this, a range in which those skilled in the art can make changes and applications is included. In the embodiment, an example in which the present invention is applied to an ink jet type serial dot matrix printer has been described. However, the present invention can also be applied to all serial printing type printer apparatuses such as a wire dot type and a thermal type. it can. Further, although the printer apparatus in which the number of lines that can be simultaneously printed is three is illustrated, the present invention is applicable to any printer apparatus that can simultaneously print a plurality of lines, and is not limited to the number of lines.
[0037]
【The invention's effect】
As described above, according to the present invention, in a printer apparatus having a print head capable of simultaneously printing a plurality of lines, it is possible to improve the printing speed for print data of the number of printable lines or less. By improving the printing speed, it becomes easier for the user to grasp the timing at which printing is performed, and the usability is improved.
[Brief description of the drawings]
FIG. 1 is a configuration block diagram of an embodiment of a printer apparatus according to the present invention.
FIG. 2A shows an example of a character data string transmitted from the host, and FIG. 2B shows an example of a bit image data string transmitted from the host.
FIG. 3 is a diagram illustrating an arrangement for printing dot image data.
FIG. 4 is a diagram conceptually illustrating a storage area divided into a plurality of print buffers.
FIG. 5 is a flowchart showing data expansion processing.
FIG. 6 is a flowchart illustrating a printing process.
FIG. 7 is a timing chart showing a comparison between a print process in a conventional printer device and a print process in an embodiment of the present invention when print data for three lines is sent from a host PC.
FIG. 8 is a diagram corresponding to FIG. 7 when print data for one line is sent from the host PC.
FIG. 9 is a flowchart showing data expansion processing in another embodiment.
FIG. 10 is a flowchart of print processing according to another embodiment.
FIG. 11 is a timing chart illustrating a printing process according to another embodiment.
[Explanation of symbols]
1 Printer device
2 Printing mechanism
3 RAM
3a Receive buffer
3b Print buffer
4 Program ROM
5 Font ROM
6 CPU
7 I / F

Claims (8)

A printer device having a print head capable of simultaneously printing a plurality of lines,
Received data storage means for sequentially storing received data transmitted from the host;
Wherein are those actually storing Printout data for printing by the print head, a print data storage means having a storage number of lines more than two times of the plurality rows,
Sequentially reading the received data of the received data storage means, generating the print data to be actually printed by the print head based on the received data, and storing the print data expanding means for storing in the print data storage means;
When at least one line of the print data is stored in the print data storage means, printing of the one line is started, and one or more of the following are stored in the print data storage means during the printing of the one line. A print control means for starting printing based on the number of lines of print data stored in the print data storage means after the print for one line is completed when the print data for a line is stored ;
A printer apparatus comprising: A printer device having a print head capable of simultaneously printing a plurality of lines,
Received data storage means for sequentially storing received data including at least a character code, which is transmitted from the host;
Character data group storage means for storing character data groups corresponding to the character codes;
Wherein are those actually storing Printout data for printing by the print head, a print data storage means having a storage number of lines more than two times of the plurality rows,
The received data in the received data storage means is sequentially read out, and corresponds to the character code included in the received data. Based on the character data group stored in the character data group storage means, the print head actually Generating the print data to be printed on the print data and storing the print data in the print data storage means;
When at least one line of the print data is stored in the print data storage means, printing of the one line is started, and one or more of the following are stored in the print data storage means during the printing of the one line. A print control means for starting printing based on the number of lines of print data stored in the print data storage means after the print for one line is completed when the print data for a line is stored ;
A printer apparatus comprising: A printer device having a print head capable of simultaneously printing a plurality of lines,
Received data storage means for sequentially storing received data including at least a control command or a print line feed command, which is transmitted from a host;
Wherein are those actually storing Printout data for printing by the print head, a print data storage means having a storage number of lines more than two times of the plurality rows,
Sequentially reading the received data of the received data storage means, generating the print data to be actually printed by the print head based on the received data, and storing the print data expanding means for storing in the print data storage means;
The received data stored in the received data storage means at the time when at least one line of the print data is stored in the print data storage means is at least how many lines of the received data are based on the control command or the print line feed command. Print control means for calculating whether it corresponds to the print data, and setting the number of print lines of the print data stored in the print data storage means according to the result, and performing printing;
A printer apparatus comprising: A printer device having a print head capable of simultaneously printing a plurality of lines,
Received data storage means for sequentially storing received data including at least a control command or a print line feed command, which is transmitted from a host;
Wherein are those actually storing Printout data for printing by the print head, a print data storage means having a storage number of lines more than two times of the plurality rows,
Sequentially reading the received data of the received data storage means, generating the print data to be actually printed by the print head based on the received data, and storing the print data expanding means for storing in the print data storage means;
The received data stored in the received data storage means at the time when at least one line of the print data is stored in the print data storage means is based on at least the control command or the print line feed command. Print control means for performing printing based on the number of lines of the print data stored in the print data storage means when it is determined that the print data is not suitable;
A printer apparatus comprising: A method for controlling a printer apparatus having a print head capable of simultaneously printing a plurality of lines,
Sequentially storing received data transmitted from the host in the received data storage means;
The received data of the received data storage means is sequentially read out, the print data that is actually printed by the print head is generated based on the received data, and the storage area has a number of lines that is twice or more of the plurality of lines. Storing in the print data storage means;
A step of starting printing for one line when the print data for at least one line is stored in the print data storage means;
Storing said when the print data of the next one or more rows are stored in the print data storing means during printing of one line, after the one line printing is completed, the print data storage means A step of starting printing based on the number of lines of printed data ,
A control method for a printer apparatus, comprising: A control method for a printer apparatus having a print head capable of simultaneously printing a plurality of lines and a character data group storage means storing character data groups corresponding to character codes,
A step of transmitting received data including at least the character code in a received data storage means, which is transmitted from a host;
The received data in the received data storage means is sequentially read out, and corresponds to the character code included in the received data. Based on the character data group stored in the character data group storage means, the print head actually Generating the print data to be printed on the print data, and storing the print data in a print data storage means having a storage area of the number of lines more than twice the multiple lines ;
A step of starting printing for one line when the print data for at least one line is stored in the print data storage means;
Storing said when the print data of the next one or more rows are stored in the print data storing means during printing of one line, after the one line printing is completed, the print data storage means A step of starting printing based on the number of lines of printed data ,
A control method for a printer apparatus, comprising: A method for controlling a printer apparatus having a print head capable of simultaneously printing a plurality of lines,
A process of sequentially storing received data including at least a control command or a print line feed command, which is transmitted from the host, in the received data storage means;
The received data of the received data storage means is sequentially read out, the print data that is actually printed by the print head is generated based on the received data, and the storage area has a number of lines that is twice or more of the plurality of lines. Storing in the print data storage means;
The received data stored in the received data storage means at the time when at least one line of the print data is stored in the print data storage means is at least how many lines of the received data are based on the control command or the print line feed command. Calculating whether it corresponds to the print data, and setting the number of print lines of the print data stored in the print data storage means according to the result to perform printing; and
A control method for a printer apparatus, comprising: A method for controlling a printer apparatus having a print head capable of simultaneously printing a plurality of lines,
A process of sequentially storing received data including at least a control command or a print line feed command, which is transmitted from the host, in the received data storage means;
The received data of the received data storage means is sequentially read out, the print data that is actually printed by the print head is generated based on the received data, and the storage area has a number of lines that is twice or more of the plurality of lines. Storing in the print data storage means;
The received data stored in the received data storage means at the time when at least one line of the print data is stored in the print data storage means is based on at least the control command or the print line feed command. A step of performing printing based on the number of lines of the print data stored in the print data storage means when it is determined that it does not correspond to the print data;
A control method for a printer apparatus, comprising:

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