JPH11154275A - Data printing device and its program recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To print printing-planned data on a present sheet of paper by reporting that printing-planned data has to be printed before the printing of printing- planned data becomes impossible on the present sheet of paper. SOLUTION: CPU 1 counts the number of printing rows which are printed on a receipt till the present point of time and sets it in a printing row number memory (a). Then, the sum of the value of the printing raw number memory (a) and the number of storage rows to be printed, which is stored in a journal memory JM, is obtained and a buzzer 8 is driven when the sum becomes close to the value in a sheet of paper max. printing row number memory (c) so as to issue alarm sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data printing device and a program recording medium therefor.

[0002]

2. Description of the Related Art Conventionally, in an electronic cash register, sales data is printed out on a receipt paper and printed out on a journal paper by a double printer equipped with a receipt printer and a journal printer. However, the provision of the two printers increases the size of the printing device and increases the cost. Therefore, in order to use both the receipt printing and the journal printing with one printer, the sales data printed with the receipt is sequentially accumulated in the journal memory, and the contents of the journal memory are printed out as needed when the store is opened. There are technologies that issue journal reports.

[0003]

However, in this type, since the receipt printing and the journal printing are performed using one roll of roll paper, the roll paper is quickly consumed, and the roll paper is frequently used. However, the journal memory stores one or several days' worth of business records, and the amount of data is enormous. Roll paper may run short. In such a case, the journal print is restarted by replacing the roll paper. However, the journal report is divided into two by the old and new roll paper, so when checking the report content, the confirmation work is extremely difficult. It was difficult. That is, FIG. 10 (A) shows the first report on which data has been printed up to that point when the roll paper runs short during journal printing, and FIG. 10 (B) shows how to replace the roll paper and restart journal printing. Indicates the second report in which the remaining data is printed. in this case,
When the first and second reports are compared, as shown in FIG. 10C, there is no continuity between them in the wrapped state, The reverse is also true, and it is extremely difficult to confirm the contents, and there is a risk of erroneous recognition. A first object of the present invention is to notify that data to be printed is to be printed before the data to be printed cannot be printed on the current paper, so that the data to be printed can be printed on the current paper. It is to be. A second object of the present invention is to change the printing form after the replacement, even if the continuous paper is replaced during the printing and the printing is restarted, when a series of data is sequentially printed on the continuous paper. The purpose is to make it possible to easily confirm the print contents before and after replacement.

[0004]

The means of the present invention are as follows. According to a first aspect of the present invention, there is provided a printing amount counting means for counting a printing amount printed up to the present time, a printing expected amount storing means for storing a printing expected printing amount, and a maximum printing amount of printing paper. Maximum printing amount storage means, calculating means for obtaining the sum of the printing amount up to the present time counted by the printing amount counting means and the printing amount to be printed, and the sum of the printing amounts obtained by this calculating means And notifying means for notifying when the maximum print amount of the printing paper is approached. In addition, when registering the sales data, the printing amount counting unit counts the printing amount of receipt printing performed up to the present time, and sequentially stores the registered sales data as journal data in the planned printing amount storage unit. Is also good. Further, a detecting unit for detecting a printing amount per unit time printed in the past is provided, and the calculating unit calculates the printing amount up to the present time counted by the printing amount counting unit, the printing amount scheduled to be printed, and the detecting unit. The sum of the detected print amount per unit time is obtained, and the notifying unit notifies the user when the sum of the print amounts obtained by the arithmetic unit is close to the maximum print amount of the printing paper. You may do so. According to the first aspect of the present invention, the number of prints printed up to the present time is counted, and the sum of the counted print amount and the print amount to be printed is obtained. When it comes close to, will be notified. In other words, by notifying that the data to be printed should be printed before the data to be printed cannot be printed on the current paper, the data to be printed can be printed on the current paper.

According to a fourth aspect of the present invention, there is provided a print data storage means for storing a series of print data, and when data in the print data storage means are sequentially read out and sequentially printed on continuous paper, the print A detecting means for detecting that the continuous paper has been replaced and the printing has been restarted, and, when the detecting means detects the restart of the printing, the subsequent data in the printing data storage means is replaced with the last part of the data. The apparatus includes reverse reading means for reading data in reverse order, and print control means for printing the data read by the reverse reading means in reverse. When one block of data in which the data arrangement order is determined is stored in the print data storage unit for a plurality of blocks, the reverse reading unit reads the data in units of one block in reverse order from the last block. The reading may be designated, and the data in the designated block may be sequentially read in accordance with the arrangement order. Further, when the continuous paper is replaced, an automatic feeding means for feeding the leading end portion of the continuous paper toward the feed roller by a predetermined amount may be provided. Further, the computer has a function of counting the amount of printing performed up to the present time, a function of calculating the sum of the counted printing amount up to the present time and the planned printing amount, and a function of calculating the obtained printing amount. A program for realizing a function of notifying when the sum of the amounts approaches the maximum printing amount of the printing paper may be recorded. According to the fourth aspect of the present invention, when a series of print data is sequentially printed on continuous paper, when it is detected that the continuous paper is replaced in the middle of printing and printing is restarted, the subsequent print data is detected. Are read in reverse order from the data at the end thereof, and the read data is printed upside down. Therefore, if a series of data is sequentially printed on continuous paper, even if the continuous paper is replaced in the middle of printing and printing is restarted, the print content before and after replacement can be changed by changing the printing form after replacement. It can be easily confirmed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. FIG.
FIG. 1A is a block diagram showing the overall configuration of an electronic cash register. The CPU 1 is a central processing unit that controls the overall operation of the electronic cash register according to various programs loaded in the RAM 2. The storage device 3 includes a storage medium 4 in which an operating system, various application programs, data files, character font data, and the like are stored in advance, and a drive system thereof. The storage medium 4 is fixedly provided or removably mountable, and is constituted by a magnetic / optical storage medium such as a floppy disk, hard disk, optical disk, RAM card, or the like, and a semiconductor memory. The programs and data in the storage medium 4 are stored in a RAM under the control of the CPU 1 as necessary.
2 is loaded. Further, the CPU 1 receives programs and data transmitted from other devices via a communication line or the like and stores them in the storage medium 4 or stored in a storage medium provided in other devices. Existing programs and data can be used via a communication line or the like. And
An input device 5, a display device 6, a printing device 7, and a buzzer 8, which are input / output peripheral devices, are connected to the CPU 1 via a bus line. The CPU 1 controls the operations according to an input / output program.

The input device 5 has a keyboard for inputting sales data, a key for each product, a key for each department, a subtotal key, a closing key, etc., and a journal launch key JK. The keyboard is provided with a mode switch, and switches to various modes such as a registration mode, an inspection mode, a settlement mode, and a setting mode according to the switching position. Here, when sales data is input at the time of merchandise registration, the input sales data is sent to the display device 6 for display and output, and various sales totalizers TM in the RAM 2 (see FIG. 1B) TM Registered in. Then, the registered sales data is sent to the printing device 7 and printed on a receipt. The printing device 7 has a configuration including one printer and a winding device, and is a non-impact printer or an impact printer such as thermal transfer or ink jet, and performs receipt printing or journal printing on one roll of roll paper. In this case, only the receipt printing is performed when the sales data is registered.
Is operated, journal printing is performed. In other words, the printing device 7 is not a dual printer that simultaneously performs receipt printing and journal printing, but performs either receipt printing or journal printing with one printer and using the same roll paper. It is.

FIG. 1B shows a main configuration of the RAM 2, and various memory areas are allocated to the RAM 2. The various totalizers TM are merchandise totalizers and departmental sales totalizers, and store the total sales. Journal memory J
M stores registered sales data as business records in the order of registration, and FIG. 2A shows a data storage image. That is, the journal memory JM stores the data storage date (transaction date) for each transaction as header information, and subsequently stores sales statement data for one transaction. The contents of the journal memory JM are printed out by operating the journal ejection key JK. The print line number memory a updates the value in accordance with the print line number each time receipt printing is performed at the time of registration of sales data, and stores the print line number (print consumption amount) up to the present time. FIG. 2B shows a receipt printing image, in which the header data for X lines, the detailed sales data for one transaction, and the message data for Y lines are printed on the receipt, so that the sales for one transaction are printed. In addition to the detailed data, the number of print lines including header data and message data is accumulated in the print line number memory a. The memory storage row number memory b stores the number of rows of data stored in the journal memory JM, and its value is updated each time data of one row is written to the journal memory JM. Note that header data and message data at the time of receipt printing are not stored in the journal memory JM. The paper maximum print line number memory c stores the maximum number of print lines of new roll paper (unused roll paper) and is set in advance according to the type of roll paper, character size, and the like.

The maximum expected number of rows memory D is, for example, 30 minutes,
The maximum number of print lines in the past in which receipt printing was actually performed per unit time such as 1 hour or 24 hours is stored as the estimated paper consumption. That is, it indicates how much paper will be consumed per unit time from the past sales performance, and the maximum number of print lines is updated according to the value of the unit time print line number memory E. The unit time print line number memory E is the current print line number printed by receipt per unit time, and the value is cleared every unit time. At that time, CP
U1 compares the value of the maximum expected line number memory D with the unit time print line number memory E, and sets the value of the unit time print line number memory E in the maximum expected line number memory D on condition that E> D. To update the maximum number of print lines. Further, the CPU 1 adds the values of the print line number memory a, the memory storage line number memory b, and the maximum expected line number memory D, and drives the buzzer 8 if the value is equal to or greater than the value of the paper maximum print line number memory c. The user is prompted to print the contents of the journal memory JM. That is, before the contents of the journal memory JM can no longer be printed on one sheet of paper, a warning is issued that journal printing should be performed. At this time, if the registration is currently being made, if the printing is immediately shifted to journal printing, the registration will be interrupted. Therefore, the registration is continued for a while. Since the registration may be continued in this way, the maximum number of expected lines per unit time is also taken into consideration at the time of warning for prompting journal printing. The power control flag F is a flag for arbitrarily setting whether to automatically turn off the power after journal printing.

Next, the operation of the electronic cash register will be described with reference to the flow charts shown in FIGS. Here, programs for implementing the functions described in these flowcharts are stored in the storage medium 4 in the form of program codes readable by the CPU 1, and the contents thereof are loaded into the RAM 2. The same applies to flowcharts in other embodiments described later. FIG. 3 is a flowchart showing an operation at the time of product registration. When a product registration operation is performed in accordance with a normal key operation procedure, a product registration process is executed and registered in various totalizers TM (step A).
1) One-line print data is created based on the registration result (step A2), and display / print processing is performed (step A3). As a result, when one line of data is printed on the receipt, "1" is added to the print line number memory a to update the value (step A4), and "1" is stored in the unit time print line number memory E. Is added to update the value (step A5).

If the transaction is registered for the first time (step A6), the data storage date (current date) is written into the journal memory JM (step A7), and the value of the memory storage row number memory b is changed by the number of date rows. Update (Step A
8). Further, the one-line registration data registered this time is written into the journal memory JM (step A9),
"1" is added to the memory storage row number memory b to update the value (step A10). By updating the values of the print line number memory a and the memory storage line number memory b in this manner, the value obtained by adding the values of the print line number memory a, the memory storage line number memory b, and the maximum expected line number memory D is obtained. It is checked whether or not the value is equal to or larger than the value of the maximum print line memory c (step A11). Here, if the sum of the number of printed lines, the number of lines stored in the journal, and the maximum number of lines expected to be consumed per unit time is less than the maximum number of paper lines, the process exits from this flow and waits for the next product registration. However, if a + b + D ≧ c holds, the buzzer 8 is driven to urge journal printing, and a warning is issued (step A12). At this point, since the roll paper still has room for the number of lines in the maximum expected line number memory D, the registration operation can be continued for a while, but a warning is issued to the customer each time. Therefore, the display message may be switched from the second time onward, or the warning sound may be turned off manually.

FIG. 4 is a flowchart showing an operation executed in response to a closing operation for ending the registration of one transaction. First, normal closing processing is performed (step B
1). In this case, since the subtotal is obtained and the receipt is printed, and the deposit and change are printed on the receipt, the values of the closed printing lines, the printing lines memory a and the unit time printing lines memory E are updated respectively. (Step B2).
Then, the message data is printed as a receipt (step B3), and the header data of the next transaction is printed as a receipt (step B4). Then, the number of lines of message data Y and the number of lines of header data X are added to the print line number memory a and the unit time print line number memory E to update the values (step B5). When the value of the print line number memory a is updated in this way, in the next step B6, it is checked whether a + b + D ≧ c is satisfied in the same manner as described above, and if it is, an alarm sound prompting journal printing is generated. (Step B
7).

FIG. 5 is a flowchart showing an interrupt process executed every unit time. That is, the execution is started at regular intervals, such as every 30 minutes, every hour, and the like. The value of the maximum expected number of rows memory D is compared with the value of the unit time print number of rows memory E, and E> D Is detected (step C1), the value of the unit time print line number memory E is transferred to the maximum expected line number memory D to update the value (step C2), and the unit time print line number memory E is cleared. (Step C3). With this, the unit time print line number memory E
Is set to the maximum number of print lines per unit time.

FIG. 6 is a flowchart showing the operation when the journal ejection key JK is operated. First, the first data storage date in the journal memory JM is printed as the transaction start date (step D1). Hereinafter, the contents of the journal memory JM are printed out line by line (step D2). As a result, when all the contents of the journal memory JM have been printed, the data storage date of the transaction stored at the end of the journal memory JM is printed out as the transaction end date (step D3). When the journal printing is completed, the contents of the journal memory JM, the number-of-printed-lines memory a, and the memory number-of-stored-lines memory b are cleared (step D4). Next, referring to the power control flag F, it is checked whether or not it is turned on (step C).
5) When the flag is detected, the power supply is automatically shut off under the condition (step D6). Thus, after journal printing, the power can be automatically turned off. Further, in order to replace the roll paper due to the consumption of the roll paper, when a new roll paper is set in the storage section, the leading end of the paper is automatically fed to the winding shaft. That is, a mechanism for automatically feeding the sheet to the initial set position at the time of sheet replacement is provided. In this case, the sensor detects whether or not the roll paper is set in the storage unit, and the paper is automatically fed in accordance with the detection. In this case, the value of the paper maximum print line number memory c may be subtracted by the number of field lines.

As described above, in this embodiment,
Calculate the sum of the number of print lines for which receipt printing has been performed up to this point and the number of print lines scheduled for journal printing.When this sum approaches the maximum number of print lines for roll paper, journal printing should be performed. Is notified, the content of the journal memory JM can be printed on one roll of roll paper. In other words, by notifying that the data to be printed should be printed before the data to be printed cannot be printed on the current paper, the data to be printed can be printed on the current paper. Paper can be used efficiently. In this case, the sum of the number of print lines on which receipt printing has been performed up to the present time and the number of print lines scheduled to be printed in the journal is obtained, and this sum is stored in the maximum expected line number memory D.
Is added to the sum and the value of the paper maximum print line number memory c is compared. Therefore, after a warning that prompts journal printing is issued, the unit time can be obtained without immediately performing journal printing. Therefore, the registration operation can be performed continuously for that time. Also,
Since the date is printed at the beginning and end of the roll paper, the business record can be easily checked and the power can be turned off automatically after printing the journal. You can go home while it is taking place.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS. In the first embodiment described above, a warning that prompts journal printing is issued before the content of the journal memory JM cannot be printed on the current roll paper. However, in the second embodiment, Even if the paper is replaced during journal printing and the printing is restarted, before and after the paper is replaced, the contents of the journal printing should be continuous.
After the paper is replaced, the form of journal printing is changed. Figure 7 shows the journal launch key JK
9 is a flowchart showing a journal print process started to be executed in accordance with the operation of FIG. First, when the journal ejection key JK is operated, it is checked whether the near-end flag is turned on (step E1). Here, the near-end flag is a flag that is turned on when the remaining amount of the roll paper is low. If the near-end flag is off at the start of journal printing, the process proceeds to step E2 to check whether the current remaining amount of the roll paper is low. That is, the remaining amount is detected based on whether the sum of the print line number memory a (the sum of the print line number up to the present time and the predetermined line number G is equal to or greater than the value of the paper maximum print line number memory c). The number G is, for example, the maximum number of printing lines for one transaction in the past, and is obtained by using the same method as that for obtaining the value of the maximum expected line number memory D when registering a product, where a + G ≧ c. If this is the case, the near end state in which the remaining amount of paper is low is detected. However, if there is enough remaining paper, the contents of the journal memory JM are read out line by line and journal printing is performed in the same manner as normal. (Step E3) Then, it is checked whether all the contents of the journal memory JM have been printed (Step E4), and the process returns to Step E2 until the printing is completed, and the operation of normally printing the contents of the journal memory JM is repeated. It is.

If the current roll paper is in the near-end state during the execution of journal printing or the start of journal printing, the process proceeds to step E5.
It is checked whether printing for one transaction is in progress. If printing is in progress, journal printing is continued until printing of all data for the one transaction is completed (step E6). Then, the current print line is set in the pointer P (step E7), and the journal printing is forcibly terminated (step E8). Further, the near end flag is turned on (step E9), and the near end state is notified by a warning sound (step E10). When the journal printing is thus forcibly terminated, the roll paper is replaced and the journal ejection key JK is operated again to restart the journal printing.
Then, in step E1, it is checked whether the near-end flag is turned on. In this case, since the flag-on is detected, the process proceeds to step E11 to automatically move the leading end of the newly set roll paper to the winding shaft. An initial feed process for feeding is performed. In this state, when the journal ejection key JK is further operated (step E).
13), journal printing is restarted.

First, a pointer P1 is set at the bottom line of data in the journal memory JM (step E1).
3). That is, FIG. 8A shows the state in this case, and the pointer P1 is set at the row position of the last data in the data storage area for the last one transaction stored in the journal memory JM. In this state,
The journal memory JM is searched in the reverse direction from the pointer P1, and the first appearing date line, that is, the date line stored at the beginning of the transaction is searched (step E).
14), this date line is set to the pointer P2 (step E15). Then, the date line is printed upside down (step E16). FIG. 9 is a diagram for explaining the form of this reverse printing. In this case, the direction of the character is rotated by 180 degrees with respect to the normal printing, and the character position is switched left and right to write leftward. Then, a value obtained by adding "1" to the value of the pointer P2 is set in the pointer WP (step E17), and
It is checked whether the pointer WP has reached the pointer P1 (step E18). That is, it is checked whether or not all the detail data for one transaction has been printed, and if P1 = WP, one line of data indicated by the pointer WP is printed upside down (step E19). In this case, as in the case of the reverse printing, the leftward printing is performed by rotating the direction of the characters by 180 degrees in the same manner as the date line printing described above. Then, "1" is added to the pointer WP to update the value, and the process returns to step E18 until the printing of all the detail data for the one transaction is completed, and the above operation is repeated.

When printing of one transaction is completed, P1 = WP is detected in step E18, and the process advances to step E21 to set the pointer P1 at the bottom line of the next transaction (the previous transaction). In this case, the value of the pointer P2 is minus "1", and the value is transferred to the pointer P1.
Then, the process proceeds to a step E22, where the pointers P1 and P are compared to check whether P1 = P. Here, since the print line that has been forcibly terminated by the near end is set in the pointer P as described above, it is checked whether or not all the remaining data has been printed by resuming the journal printing, and the process returns to step E14 until the printing is completed. The contents of the journal memory JM are printed upside down for each transaction. As a result, the data storage area for the next one transaction following the near end (FIG. 8A)
When the printing of the data is completed, in step E22, P1
= P is detected, the process proceeds to step E23, and the near-end flag is turned off. The reissued journal report issued in this way has a print form as shown in FIG. 8B. In this case, when the leading end direction of the sheet is wound, as shown in FIG. 8C, the print contents of the journal report issued before the near end and the journal report issued after the near end become continuous.

As described above, in the second embodiment, when the roll paper is replaced in the middle of printing while the contents of the journal memory JM are being sequentially printed, and thereafter the journal printing is restarted, the journal printing after the replacement is performed. Since the contents of the journal memory JM are read in reverse order and printed upside down, as shown in FIG. 8 (C), if the leading and trailing portions of the journal report before and after replacement printed in two volumes face each other, replacement is performed. The printed contents before and after become continuous, which can be easily confirmed, and can be stored as a one-volume report by pasting their leading ends together as they are. Further, although the data is stored in the journal memory JM for each transaction, the data is read in a reverse order for each transaction, and the data in one transaction is read and printed out in a normal order. Therefore, the order of data in one transaction is the same as the order of registration as usual, and does not hinder readability. Further, at the time of paper exchange, the leading end portion is automatically fed to the winding shaft, so that the operation for exchanging roll paper can be easily performed.

In each of the above-described embodiments, the journal printing in which the contents of the journal memory are printed as business records by the electronic cash register has been described as an example. However, the data to be printed is not limited to journal data.
The printing paper is optional, and the printing paper may be continuous paper sent out by a tractor feeder in addition to the roll paper. Further, in the above-described second embodiment, the contents of the memory are read in reverse order from the last data. However, after the paper is exchanged, the memory contents are read so that the final data is located next to the data before the paper exchange. May be edited, and then the contents may be read out in the normal order.

[0022]

According to the present invention, the data to be printed is notified on the current paper by notifying that the data to be printed should be printed before the data to be printed cannot be printed on the current paper. Can be printed. Also, if a series of data is sequentially printed on continuous paper, even if the continuous paper is replaced in the middle of printing and printing resumes, changing the printing format after replacement will change the print contents before and after replacement. It can be easily confirmed.

[Brief description of the drawings]

FIG. 1A is a block diagram showing an overall configuration of an electronic cash register, and FIG. 1B is a diagram showing a main configuration of a RAM 2;

FIG. 2A is a diagram showing a data storage image of a journal memory JM, and FIG. 2B is a diagram showing a receipt printing image.

FIG. 3 is a flowchart showing an operation at the time of product registration.

FIG. 4 is a flowchart showing an operation executed in response to a closing operation at the end of one transaction.

FIG. 5 is a flowchart showing an interrupt process executed per unit time.

FIG. 6 is a flowchart showing an operation when a journal ejection key JK is operated.

FIG. 7 is a flowchart showing a journal printing process started to be executed in response to an operation of a journal ejection key JK in the second embodiment.

FIG. 8A is a diagram showing a state in which the contents of a journal ejection key JK are designated by a pointer before and after a paper exchange, and FIG. 8B is a diagram for explaining a printing state after the paper exchange; (C) is a diagram showing a state in which journal reports before and after paper exchange are compared.

FIG. 9 is a diagram for explaining upside down printing.

FIG. 10 is a view for explaining a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 RAM 3 Storage device 4 Storage medium 5 Input device 7 Printing device 8 Buzzer TM Various totalizer JM Journal memory a Print line number memory b Memory storage line number memory c Paper maximum print line number memory D Maximum expected line number memory E Unit time print line number memory JK Journal ejection key

Claims (8)

[Claims] 1. A printing amount counting means for counting a printing amount printed so far, a printing amount storing means for storing a printing amount to be printed, and a maximum printing for storing a maximum printing amount of printing paper. Amount storage means, calculation means for calculating the sum of the print quantity up to the present time counted by the print quantity count means and the print quantity to be printed, and the sum of the print quantity obtained by the calculation means is used for the printing paper. And a notifying means for notifying when the maximum print amount is approached. 2. When printing sales data, the printing amount counting means counts the printing amount of the receipt printed up to the present time and sequentially stores the registered sales data as journal data in the printing expected amount storage means. The data printing apparatus according to claim 1, wherein 3. A detecting means for detecting a printing amount per unit time printed in the past, wherein said calculating means includes a printing amount up to a present time counted by said printing amount counting means, said printing amount to be printed, and The sum with the print amount per unit time detected by the detection means is obtained, and the notifying means notifies the user when the sum of the print amounts obtained by the calculation means is close to the maximum print amount of the printing paper. 2. The data printing apparatus according to claim 1, wherein information is notified. 4. A print data storage means for storing a series of print data, and when the data in the print data storage means is sequentially read out and sequentially printed on continuous paper, the continuous paper is replaced during the printing. Detecting means for detecting that printing has been resumed, and when the detecting means detects resumption of printing, the data in the print data storage means thereafter are read in reverse order from the data at the end thereof. A data printing apparatus comprising: reading means; and printing control means for printing the data read by the reverse reading means upside down. 5. When a plurality of blocks of data for one block in which the data arrangement order is determined are stored in the print data storage means, the reverse reading means reads one block in the reverse order from the last block. 5. The data printing apparatus according to claim 4, wherein the reading is designated for each unit, and the data in the designated block is sequentially read in accordance with the arrangement order. 6. The data printing apparatus according to claim 4, further comprising an automatic feeding means for feeding a predetermined amount of the leading end portion of the continuous paper toward the feed roller when the continuous paper is replaced. 7. A function for counting a print amount printed up to the present time to a computer, a function for obtaining a sum of the counted print amount up to the present time and a print amount to be printed, A recording medium for recording a program for realizing a function of notifying when the sum of the given printing amounts approaches the maximum printing amount of the printing paper. 8. A function for detecting, when a series of print data is successively printed on continuous paper, that the continuous paper has been replaced during printing and restarting printing, A recording medium for recording a program for realizing a function of reading out subsequent print data from the data at the end thereof in reverse order when a restart is detected and a function of printing upside down data read in reverse order.