JP4626308B2 - Roll paper printing device - Google Patents

Description

  The present invention relates to a roll paper printing apparatus, a method thereof, and a program, and more particularly to a roll paper printing apparatus capable of printing on roll paper based on print data, a method thereof, and a program.

Conventionally, as a roll paper printing apparatus capable of printing on roll paper based on print data, for example, as disclosed in Patent Document 1, a detection signal from a medium detection sensor arranged in the vicinity of an image forming area, The amount of roll paper used is calculated based on the amount of conveyance by the conveyance roller, and the remaining amount of roll paper is obtained by subtracting the calculated amount of roll paper used from the initial length of the roll paper and stored in the memory. What is remembered is known. Further, in this apparatus, after printing is completed and the roll paper is cut, a new remaining amount is obtained by subtracting the amount of roll paper transport from the remaining amount.
JP 2000-31558 (paragraph 0040, paragraph 0054)

  By the way, in the apparatus disclosed in Patent Document 1, a roll paper is cut by a cutter on the downstream side in the discharge direction while being held between a discharge roller and a spur after a color image is formed by ink discharged from the print head. From the cutting position of the roll paper to the position where the image is formed, there is a blank portion. For this reason, there is a case where the next printing is performed after the roll paper is conveyed in the winding direction in order to effectively use the blank portion. However, in this device, after the roll paper is cut, a new remaining amount is obtained by subtracting the conveyance amount from the remaining amount of the roll paper. However, the conveyance amount after the roll paper is conveyed in the winding direction is Since this is a value smaller than the transport amount, the situation in which the remaining amount once displayed increases thereafter is not preferable. In particular, in the case of a device that issues a warning when the remaining amount falls below a predetermined value just before running out of paper, a warning may be issued immediately after cutting, and then the warning may stop after winding the roll paper. It is not preferable.

  SUMMARY An advantage of some aspects of the invention is that it provides a roll paper printing apparatus, a method thereof, and a program thereof that can appropriately execute processing based on the amount of roll paper transport. .

  The present invention adopts the following means in order to achieve the above-mentioned object.

A roll paper printing apparatus of the present invention,
Temporary storage executing means for storing the transport amount in the temporary storage means when the roll paper is transported;
A confirmation timing determination means for determining whether or not the provisionally stored transport amount is a confirmation timing to be confirmed and stored;
A deterministic storage executing unit that stores the temporarily stored conveyance amount in the deterministic storage unit when it is determined by the deterministic timing determination unit that the current time is the final determination timing;
Processing execution means for executing processing based on the transport amount stored in the fixed storage means;
With
The determination timing determination means does not determine that the determination timing is during a floating period during which roll paper is likely to be conveyed in the winding direction by an operator's operation.

  In this roll paper printing apparatus, since it is not determined that it is the fixed timing during the floating period, the once determined transfer amount does not change to a small value thereafter. In other words, if it is determined that it is the fixed timing during the floating period, when the process is executed based on the once confirmed conveyance amount, the conveyance amount is larger than the once confirmed conveyance amount when the roll paper is wound after that. Since the process executed previously may be inappropriate due to the change to a small value, the transport amount does not change to a value smaller than the transport amount once determined in the present invention. It will not be inappropriate. Therefore, according to the present invention, it is possible to appropriately execute processing based on the transport amount of roll paper.

  In the roll paper printing apparatus of the present invention, the floating period may include a period from the start to the end of conveyance without printing, and further includes a period from the end of the conveyance to the next operation. It may be included. When transport without printing is performed, a margin is generated in the leading area of the roll paper, and therefore there is a high possibility that the paper will be transported in the winding direction by the operation of the operator. For this reason, it is preferable that the conveyance amount is not determined during a period from the start to the end of conveyance without printing or a period from the end of the conveyance to the next operation.

  In the roll paper printing apparatus of the present invention, the floating period may include a period from the start to the end of conveyance by an operator's operation, and further includes a period from the end of the conveyance to the next operation. It may be included. When the operator performs the conveyance by his / her own operation, the conveyance in the winding direction and the conveyance in the discharge direction may be repeated. For this reason, it is preferable that the transport amount is not determined during the period from the start to the end of the transport by the operation of the operator or the period from the end of the transport to the next operation.

  In the roll paper printing apparatus of the present invention, the floating period may include a period from the start to the end of the mechanical sequence process started in accordance with a predetermined event, and further from the end of the mechanical sequence process. A period until the next operation is performed may be included. When the mechanical sequence process is performed, a margin may be generated in the leading area of the roll paper, so that there is a high possibility that the roll will be conveyed in the winding direction by the operation of the operator. For this reason, it is preferable that the transport amount is not determined during the period from the start to the end of the mechanical sequence process or the period from the end of the transport to the next operation. Here, the “mechanical sequence process” includes, for example, a roll paper transport operation performed in response to an event of power-on.

  In the roll paper printer of the present invention, during the floating period, the roll paper is conveyed from the end of printing to the cutting position, and after the roll paper is cut, the roll paper is returned to the cueing position for starting the next printing. A period may be included. When the roll paper is cut, a margin is generated in the leading area of the roll paper, and the roll paper is often returned to the operator or automatically at the cueing position. For this reason, it is preferable that the conveyance amount is not determined during a period from when the roll paper is conveyed from the printing end point to the cut position until the roll paper is returned to the cue position after the roll paper is cut.

  In the roll paper printing apparatus of the present invention, the processing execution unit calculates a roll paper remaining amount calculated by subtracting a conveyance amount stored in the fixed storage unit from an initial remaining amount value and a predetermined value immediately before the paper runs out. The comparison may be made, and a warning regarding paper out may be output based on the comparison result. In this case, since the confirmed and stored conveyance amount does not change to a small value thereafter, the remaining amount of roll paper does not change to a large value thereafter. Therefore, after the remaining amount of roll paper is low and a warning is output, there is no case where the remaining amount of roll paper increases and the warning is canceled. Here, the “value just before running out of paper” may be a fixed value stored in the apparatus in advance, or may be a value set and input by an operator's operation. In this way, it is possible to change the value immediately before running out of paper according to the preference of the operator.

  In the roll paper printing apparatus of the present invention, the determination timing may be a predetermined timing that is predetermined within a non-floating period in which there is almost no possibility of the roll paper being conveyed in the winding direction by an operator's operation. . In this way, the confirmed and stored transport amount does not change to a small value thereafter. As such a determination timing, for example, the time when the roll paper is transported from the printing end time to the cutting position and the roll paper returns to the cueing position for starting the next printing after cutting the roll paper may be adopted. Good. Since there is almost no possibility that the roll paper will be transported further in the winding direction after returning to the cueing position, it is preferable to determine and store the transport amount at this point. Or you may employ | adopt the time when conveyance with printing was complete | finished as such a fixed timing. Since it is difficult to consider a situation in which the printed area of the roll paper is returned and printed again, it is preferable to determine and store the transport amount at this point.

  In the roll paper printing apparatus of the present invention, the temporary storage execution unit may store the transport amount theoretical value obtained based on the print data in the temporary storage unit before the roll paper is actually transported. For example, it may be possible to calculate the conveyance amount based on the number of rotations of the conveyance roller, but in that case, it is necessary to make corrections in consideration of slippage between the conveyance roller and the roll paper. It is preferable to temporarily store the transport amount theoretical value that does not require the above. Since the temporarily stored transport amount is then confirmed and stored, the transport amount that is confirmed and stored is also the transport amount theoretical value.

The roll paper printing method of the present invention comprises:
(A) storing the transport amount in a temporary storage unit when the roll paper is transported;
(B) determining whether the provisionally stored transport amount is a fixed timing to be fixed and stored;
(C) storing the temporarily stored conveyance amount in a fixed storage unit when it is determined in step (b) that the current time is the fixed timing;
(D) executing a process based on the transport amount stored in the fixed storage unit;
Including
In the step (b), the determination timing is not determined during a floating period in which the roll paper is likely to be conveyed in the winding direction by an operator's operation.

  In this roll paper printing method, since it is not determined that it is the fixed timing during the floating period, the once confirmed conveyance amount does not change to a small value thereafter, and therefore processing based on the roll paper conveyance amount is appropriately executed. be able to. In addition, you may add the step which implement | achieves the function of the roll paper printing apparatus mentioned above to the roll paper printing method of this invention.

  The program of the present invention is a program for causing one or more computers to execute each step of the above-described roll paper printing method. This program may be recorded on a computer-readable recording medium (for example, hard disk, ROM, FD, CD, DVD, etc.), or from a computer via a transmission medium (communication network such as the Internet or LAN). It may be distributed to another computer, or may be exchanged in any other form. If this program is executed by one computer, or if each step is shared and executed by a plurality of computers, the same effect as the roll paper printing method described above can be obtained.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an outline of the configuration of a printer 10 according to an embodiment of the present invention.

  The printer 10 according to the present embodiment is a large format printer that is also referred to as an LFP (Large Format Printer), and is a color inkjet printer that can print on A1 size paper or larger. The printer 10 has a mechanism for transporting the roll paper P along the paper feed guide 14 and the paper discharge guide 16 by the transport motor 12, and a direction across the roll paper P by the carriage motor 18 (a direction perpendicular to the paper surface in FIG. 1). A mechanism for reciprocating the carriage 20 along a guide rail (not shown) provided in the printer, and a mechanism for controlling the ejection of ink from each color ink cartridge 24 and the dot formation by driving the print head 22 mounted on the carriage 20. A cutter solenoid 30 for bringing the movable blade 26 mounted on the carriage 20 downstream of the print head 22 in the discharge direction into contact with and separating from the fixed blade 28 formed on the discharge guide 16; An operation panel 36 for displaying information and inputting various information by operating buttons, a conveyance motor 12, and a carriage motor 8, the print head 22, the cutter solenoid 30, and an operation panel 36 and the host computer 50 and the controller 40 that controls transmission of signals. The operation panel 36 is provided with a transport button 38. The transport button 38 includes a discharge button 38a for transporting the roll paper P in the discharge direction and a winding button 38b for transporting the roll paper P in the winding direction. There are two types.

  The controller 40 includes a CPU 41 that executes various processes, a ROM 42 that stores various control programs, a RAM 43 that temporarily stores data, a timer 44 that measures time, a host computer 50, motors 12 and 18. And an input / output port 45 for exchanging data with the print head 22 and the operation panel 36, and these are connected to each other via a bus 47. Here, since the RAM 43 is backed up even when a power switch (not shown) provided on the operation panel 36 is turned off, the stored contents are not lost. Is provided with a movement counter 43a for temporarily storing the carry amount and a confirmation counter 43b for confirming and saving the carry amount temporarily stored in the movement counter 43a.

  Next, a print processing routine of the printer 10 of this embodiment will be described based on the flowchart of FIG. The controller 40 of the printer 10 determines whether or not the bitmap-developed image data has been received from the host computer 50 at every predetermined timing (step S102). On the other hand, when the image data is received, print data suitable for the printer 10 is created based on the image data and temporarily stored in the RAM 43 (step S104), and the carriage 20 includes the roll paper P in the print data. A theoretical value of the transport amount by which the roll paper P is moved in the transport direction when printing in one reciprocation in the transverse direction is calculated (step S106), and the theoretical value is added to the count value of the movement counter 43a (step S108). ) And the rotation amount of the transport motor 12 is calculated based on the theoretical value (step S110). Here, the rotation amount of the conveyance motor 12 is a roll that passes between a conveyance roller 12a that rotates together with the rotation shaft of the conveyance motor 12 and a driven roller 12b that is arranged so as to sandwich the roll paper P together with the conveyance roller 12a. It is calculated in consideration of slippage with the paper P and the like. For example, when the slip is large due to the nature of the paper type of the roll paper P, the amount of rotation of the transport motor 12 is calculated to be larger than when there is no slip. It is assumed that the paper type of the roll paper P is input in advance from the operation panel 36 by the operator.

  Then, while controlling the carry motor 12 based on the calculated rotation amount of the carry motor 12, the print head 22 and the carriage motor 18 are controlled based on the print data (step S112). Here, the print head 22 is controlled by ejecting ink from the ink cartridges 24 of each color onto the area on the platen 23 of the roll paper P that is conveyed while being sandwiched between the conveyance roller 12a and the driven roller 12b. In this control, ink is not ejected when there is no content to be printed. When ink is not ejected, the carriage 20 may be stopped without reciprocating the carriage 20 by the carriage motor 18. Thereafter, it is determined whether or not the current transport of the roll paper P is transport accompanied by printing (step S114). When the current transport of the roll paper P is transport accompanied by printing, the transport counter 43a is reset after adding the transport amount temporarily stored in the travel counter 43a to the fixed counter 43b (step S116). A value obtained by subtracting the count value of the confirmation counter 43b from the initial remaining amount value of P is set as the remaining amount of roll paper (step S118). (Step S120), when the remaining amount of roll paper is less than or equal to the near-end value, a warning message is output to the operation panel 36 that paper is almost out, and a warning sound is generated from a speaker (not shown) (step S122). End the routine. On the other hand, when the roll paper remaining amount exceeds the near-end value in step S120 or the conveyance is not accompanied by printing in step S114, it is determined whether or not unprocessed print data remains (step S124). When the print data of the process remains, the process after step S106 is executed again, and when the unprocessed print data does not remain, this routine is finished. As described above, when the conveyance without printing is performed, the count value of the movement counter 43a is not added to the count value of the confirmation counter 43b. Is added to the count value of the confirmation counter 43b. For this reason, as a result, it can be said that the time point at which the conveyance with printing is performed is determined as the final timing.

  Next, the cut processing routine of the printer 10 of the present embodiment will be described based on the flowchart of FIG. 3 and the operation explanatory diagram around the carriage of FIG. The controller 40 of the printer 10 determines whether or not a cut command has been input from the host computer 50 or the operation panel 36 at every predetermined timing (step S202). If there is no cut command, the present routine is terminated. This cut command is normally input from the host computer 50 or the operation panel 36 after the print processing routine is completed. On the other hand, when a cut command is issued, the fixed blade 28 provides a position P1 of the roll paper P facing the print head 22 (corresponding to the end position of the image forming area of the roll paper P immediately after the end of the print processing routine). The theoretical value (positive value) of the transport amount to be moved to the cut position X (see FIG. 4A) is added to the count value of the movement counter 43a (step S204). Since the distance from the position facing the print head 22 to the cut position X is constant, the theoretical value of the carry amount here is calculated in advance. Subsequently, the rotation amount of the conveyance motor 12 is calculated based on the theoretical value (step S206), and the conveyance motor 12 is controlled based on the calculated rotation amount of the conveyance motor 12 (step S208). After the control of the transport motor 12, the position P <b> 1 facing the print head 22 of the roll paper P reaches the cut position X. Subsequently, as shown in FIG. 4B, the roll paper P is cut by the movable blade 26 and the fixed blade 28 (step S210). That is, the movable blade 30 is moved against the biasing force of the spring 34 disposed between the cutter holder 32 and the carriage 20 by exciting the solenoid 30 for the cutter and pulling the movable iron core 30a fixed to the cutter holder 32 to the roll paper P. While the carriage 26 is in contact with the fixed blade 28, the carriage 20 is moved in a direction across the roll paper P by the carriage motor 18. As a result, the roll paper P is cut at the cutting position X. After cutting, the cutter solenoid 30 is demagnetized. Then, since the cutter holder 32 is lifted in the direction away from the roll paper P by the biasing force of the spring 34, the movable blade 26 is also lifted in the same direction.

  Thereafter, the theoretical value (negative value) of the transport amount for returning the leading end position of the roll paper P to the cueing position Y for starting the next printing is added to the count value of the movement counter 43a (step S212). Since the distance from the cutting position X to the cueing position Y is constant, the theoretical value of the transport amount here is calculated in advance. Subsequently, the rotation amount of the conveyance motor 12 is calculated based on the theoretical value (step S214), and the conveyance motor 12 is controlled based on the calculated rotation amount of the conveyance motor 12 (step S216). After the control of the transport motor 12, the leading end position of the roll paper P reaches the cueing position Y as shown in FIG. Thereafter, the count value of the movement counter 43a is added to the confirmation counter 43b, and then the movement counter 43a is reset (step S218). Then, a value obtained by subtracting the count value of the confirmation counter 43b from the initial remaining amount value of the roll paper P is set as the remaining amount of roll paper (step S220), and the remaining amount of roll paper is a near-end value set by the operator in advance on the operation panel 36. It is determined whether or not it is below (step S222). When the remaining amount of roll paper is less than or equal to the near-end value, a warning message indicating that paper is almost out is output to the operation panel 36 and a warning sound is generated from a speaker (not shown) (step S222). S224), this routine is finished. On the other hand, when the remaining amount of roll paper exceeds the near-end value in step S222, this routine is finished as it is. In this manner, the count value of the movement counter 43a is determined during the period from when the roll paper P is conveyed from the printing end time to the cut position X until the leading edge of the roll paper P is returned to the cue position Y after the roll paper P is cut. The count value of the movement counter 43a is added to the count value of the fixed counter 43b at the time of returning to the cueing position Y without adding to the count value of 43b. Therefore, as a result, it can be said that the time point when the head position is returned to the cueing position Y is determined as the fixed timing.

  Next, the conveyance processing routine by the panel of the printer 10 of this embodiment will be described based on the flowchart of FIG. The controller 40 of the printer 10 determines whether or not the transport button 38 of the operation panel 36 is pressed by the operator at every predetermined timing (step S302). When the transport button 38 is not pressed, this routine is finished as it is. The conveyance button 38 is pressed, for example, when the printing position of the roll paper P is changed or when there is a margin on the downstream side in the discharge direction from the print head 22. On the other hand, when the transport button 38 is pressed, the transport direction is determined depending on whether the discharge button 38a or the winding button 38b is pressed (step S304). When the transport direction is the forward rotation direction, that is, when the discharge button 38a is pressed, a theoretical value (normal value) of the transport amount for transporting the roll paper P in the discharge direction by a certain transport amount each time it is pressed. Is added to the count value of the movement counter 43a (step S306). On the other hand, when the transport direction is the reverse direction in step S304, that is, when the take-up button 38b is pressed, a transport amount for transporting the roll paper P in the take-up direction by a predetermined transport amount each time it is pressed. The theoretical value (negative value) is added to the count value of the movement counter 43a (step S308). After step S306 or step S308, the rotation amount of the conveyance motor 12 is calculated based on the theoretical value of the current conveyance amount (step S310), and the conveyance motor 12 is rotated by the rotation amount (step S312). End the routine. In this way, in the transfer processing routine, the count value of the movement counter 43a is not added to the count value of the fixed counter 43b. When the discharge button 38a or the take-up button 38b is continuously pressed, the roll paper P is intermittently conveyed by repeatedly executing this routine.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The movement counter 43a of this embodiment corresponds to temporary storage means of the present invention, the confirmation counter 43b corresponds to confirmation storage means, and the CPU 41 of the controller 40 performs temporary storage execution means, confirmation timing determination means, confirmation storage means, and process execution. Corresponds to means. In the present embodiment, an example of the roll paper printing method of the present invention is also clarified by describing the operation of the printer 10 as the roll paper printing apparatus.

  According to the printer 10 of the present embodiment described in detail above, the floating period during which the roll paper P is likely to be conveyed in the winding direction by the operation of the operator (specifically, from the start of conveyance without printing is terminated). Depending on the operation of the operation panel 36 of the operator, the period until the leading end of the roll paper P is returned to the cueing position Y after the roll paper P is transported from the printing end point to the cutting position X and cut. Since the process of adding the count value of the movement counter 43a to the count value of the confirmation counter 43b is not performed during the period from the start to the end of the conveyance) (that is, it is not determined that the confirmation timing is reached), It doesn't change to a small value. Accordingly, it is possible to appropriately issue a warning about a paper shortage that is performed based on the remaining amount of roll paper obtained by subtracting the conveyance amount of the roll paper P stored in the confirmation counter 43b from the initial remaining amount value. After the warning is reduced and the warning is output, a situation in which the remaining amount of roll paper is increased and the warning is canceled is not caused.

  Here, when transport without printing is performed, there is a high possibility that the roll will be transported in the winding direction by the operator's operation because a margin is generated in the leading area of the roll paper P. If the roll paper P is carried out, the conveyance in the winding direction and the conveyance in the discharge direction may be repeated. When the roll paper P is cut, a margin is generated in the leading area of the roll paper P. Return the roll paper to the cue position. Therefore, in any case, it is preferable not to determine the count value of the movement counter 43a.

  Further, the near-end value, i.e., the value immediately before the paper runs out, can be set and inputted by an operator's operation, and can be arbitrarily changed according to the operator's preference.

  Further, when the roll paper P is transported from the printing end time to the cutting position X and the roll paper P is cut and then the leading edge of the roll paper P returns to the cueing position or when transport with printing is performed, the movement counter 43a Although the count value is determined, there is almost no possibility that the roll paper is conveyed in the winding direction by the operation of the operator at these points in time, and there is a problem even if the count value of the movement counter 43a is determined. Absent.

  Further, it is conceivable that the movement counter 43a calculates the conveyance amount based on the number of rotations of the conveyance motor 12 and temporarily stores the calculated conveyance amount. In this case, the conveyance roller 12a and the roll paper P Therefore, it is preferable to temporarily store a transport amount theoretical value that does not require such correction. Since the temporarily stored transport amount is then finally stored in the confirmation counter 43b, the transport amount that is confirmed and stored is also the transport amount theoretical value.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, during the period from the start to the end of the mechanical sequence process that is started when the power switch of the operation panel 36 is turned on, the count value of the movement counter 43a is set as the confirmation counter 43b. It may not be added to the count value. Here, when the power switch is turned on from off, the roll paper P is conveyed in the discharge direction or in the winding direction by a predetermined mechanical sequence process. When such a mechanical sequence process is performed, a margin may be generated in the leading area of the roll paper, and therefore there is a high possibility that the roll will be conveyed in the winding direction by an operator's operation. It is preferable not to determine the count value.

  In addition, when the image data is received in step S102 of FIG. 2 of the above-described embodiment, the time is determined as the confirmation timing, and the count value of the movement counter 43a is added to the count value of the confirmation counter 43b, and then the movement counter 43a. And the remaining amount of roll paper is calculated based on the count value of the confirmation counter 43b, and it is determined whether or not the remaining amount of roll paper is less than or equal to the near end value. If the near end value is exceeded, the process may proceed to step S104 and subsequent steps. That is, when image data is received in step S102, the processing in steps S116, S118, S120, and S122 may be executed.

  Further, in the above-described embodiment, the LFP is exemplified as the printer. However, the present invention may be applied to a general-purpose inkjet printer, or the present invention may be applied to any printer other than the inkjet printer as long as it can print on roll paper. Can be applied.

FIG. 2 is a block diagram illustrating an outline of a configuration of a printer. The flowchart of a printing process routine. The flowchart of a cut process routine. Explanatory drawing of operation | movement of the carriage periphery accompanying a cut process. The flowchart of the conveyance processing routine by a panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Printer, 12 Carrying motor, 12a Carrying roller, 12b Driven roller, 14 Paper feed guide, 16 Paper discharge guide, 18 Carriage motor, 20 Carriage, 22 Print head, 23 Platen, 24 Ink cartridge, 26 Movable blade, 28 Fixed blade , 30 Cutter solenoid, 30a Movable iron core, 32 Cutter holder, 34 Spring, 36 Operation panel, 38 Transport button, 38a Eject button, 38b Winding button, 40 Controller, 41 CPU, 42 ROM, 43 RAM, 43a Movement counter, 43b Confirmation counter, 44 timer, 45 I / O port, 47 bus, 50 host computer.

Claims (5)

A roll paper printing apparatus provided with printing means capable of printing on roll paper,
Receiving means for receiving data to be printed on the roll paper;
A temporary storage unit that stores the transport amount when the roll paper is transported, and that does not lose the transport amount even when the power is turned off;
A storage unit that stores the transport amount when the roll paper is transported, and a definite storage unit that does not lose the transport amount even when the power is turned off;
And temporarily stored execution means for storing the transport amount when the roll paper is conveyed to the temporary storage means,
A confirmation timing determination means for determining whether or not the provisionally stored transport amount is a confirmation timing to be confirmed and stored;
A deterministic save execution means for the present time to save the conveyance amount of the provisionally stored when it is determined as the a definite timing to said determined storage means by the determined timing determination means,
Out of paper warning means for outputting a warning about out of roll paper,
With
The determination timing determination means does not determine that the determination timing is within the period from the start to the end of conveyance of the roll paper without printing, and the time when the data to be printed is received when printing is not in progress Is determined timing,
The out-of-paper warning means compares the remaining amount of roll paper calculated by subtracting the conveyance amount stored in the confirmed storage means by the confirmed storage executing means from the initial remaining amount value, and a predetermined value immediately before the out of paper, Outputting a warning about running out of paper based on the comparison result;
Roll paper printer. The roll paper printing apparatus according to claim 1,
Storage means for storing the data to be printed that has been received;
Accumulation determining means for determining whether unprocessed data to be printed is accumulated in the accumulation means;
Rewinding means capable of rewinding the roll paper to the upstream side of conveyance after the conveyance of the roll paper to the downstream side of conveyance is completed;
With
The accumulation determination unit determines whether or not the unprocessed data to be printed is accumulated in the accumulation unit after the conveyance of the roll paper accompanied by printing is completed,
The determination timing determination unit determines that the time when the conveyance of the roll paper accompanied by printing is completed is the determination timing,
The printing means does not print the unprocessed data to be printed on the roll paper when the warning about the paper out is output even if the unprocessed data to be printed is accumulated.
Roll paper printer. The determination timing determination means does not determine that the determination timing is within the period from the start to the end of the mechanical sequence process that starts with a predetermined event .
The roll paper printing apparatus according to claim 1 or 2 . The roll paper printer according to any one of claims 1 to 3,
Operator conveying means capable of directly conveying the roll paper by an operator's operation
With
The determination timing determination means does not determine that the determination timing is within the period from the start to the end of transfer by the operator transfer means ,
Roll paper printer. The roll paper printing apparatus according to any one of claims 1 to 4,
Cutting means for cutting the roll paper at a predetermined position;
Roll paper automatic returning means for automatically transporting the roll paper and returning the leading edge of the roll paper to a predetermined cueing position for starting next printing when the roll paper is cut by the cutting means; ,
A roll paper printing device comprising:

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