JP2008273655A - Device and method for feeding paper roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent permanent curl or fold from occurring on paper even if the standby state of a device is continued for a long time and prevent a sudden conveying load from occurring during the start of paper feeding in the paper roll feeding device for conveying a rolled paper roll by holding by a pair of holding rollers installed on the lower side of the device and sandwiching by conveying rollers installed on the downstream side. <P>SOLUTION: A roller drive means allowing paper to be delivered and wrapped is installed on one of the pair of holding rollers. The device comprises a control part for so controlling the device that during the standby state, the loosed portion of roll paper is formed between the holding rollers and the conveying rollers, and when the paper feed is started, the holding rollers are first driven and then the conveying rollers are driven. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a roll paper feeding device mounted on a ticket processing apparatus such as an automatic ticket vending machine.

  Conventionally, a roll paper feeding device mounted on a ticket processing apparatus such as an automatic ticket vending machine has a roll paper mounted on a roll paper shaft and a roll paper shaft attached to a paper feeding unit. Rotates the roll paper. Thereafter, the ticket is cut into a predetermined length by a cutter provided downstream of the paper feed unit, visible information is printed by a print head provided further downstream, and magnetic information is recorded by the magnetic head. The ticket is issued from the ticketing slot and issued.

  At this time, the paper feed unit to which the roll paper shaft is attached is not provided with a mechanism for rotating and stopping the rotation of the roll paper shaft. That is, the roll paper is held by a holding roller provided below the roll paper. Accordingly, the roll paper is fed by a conveyance roller provided downstream of the paper feeding unit, with the roll tip held between the rolls.

  On the other hand, Japanese Patent No. 3744754 (Patent Document 1) relates to a printer using roll paper in which printing paper is wound in a roll shape, and has a technology for preventing the roll paper from being bent due to rotation of the roll paper shaft due to inertia. Are listed.

  Japanese Patent Laid-Open No. 2001-316007 (Patent Document 2) also relates to a printer that uses roll paper, and drives both of the two holding rollers provided below the roll paper to provide a difference in peripheral speed. A technique for preventing the occurrence of the above is described.

Further, JP 2003-252491 A (Patent Document 3) also relates to a printer using roll paper, regardless of the diameter of the roll paper when driving two holding rollers provided below the roll paper. In order to make the transfer force constant, a technique is described in which the holding roller is rotationally driven in synchronization with the transfer of the printing unit.
Patent No. 3744754 JP 2001-316007 A JP2003-252491A

  However, in the roll paper feeding device mounted on a conventional ticket processing apparatus such as an automatic ticket vending machine, the roll paper shaft rotates immediately even if the transport roller provided downstream of the paper feeding unit stops driving. Does not stop, and continues to rotate due to inertia for a while. As a result, even after the driving of the transport roller is stopped, the roll paper is fed to the transport roller side, and a large sag is generated in the roll paper between the paper feeding unit and the transport roller.

  This sagging causes curl wrinkles, creases, and the like on the roll paper, and has adverse effects such as poor print quality and inability to perform magnetic writing.

  Also, if the slack is present and the transport roller is rotated again to start feeding the roll paper, the slack portion is transported first, and then the roll paper is pulled and the roll paper shaft starts rotating. Then, roll paper is fed. At this time, an abrupt conveyance load is generated, and an error may occur in the conveyance by the conveyance roller. The conveyance error of the conveyance roller affects the length when the roll paper is cut, and is shorter than a predetermined length. It also leads to issuing tickets.

  On the other hand, Patent Document 1 describes a problem similar to that of the related art (paragraphs 0003 to 0006). However, since Patent Document 1 includes a torque limiter inside the roll paper shaft main body, There is still a problem that the structure of the paper feeding apparatus as a whole is complicated.

  In Patent Document 2, when both of the two holding rollers provided below the roll paper are driven, when rotating in the forward direction, the peripheral speed of the front roller is slightly lower than the peripheral speed of the rear roller. When rotating in the opposite direction, the peripheral speeds of the front roller and the rear roller are the same, but there is a problem that the structure for this is complicated.

  Further, in Patent Document 3, a holding roller provided below the roll paper is rotationally driven in synchronism with the transfer of the printing unit, but the paper is always tightened between the printing unit and the holding roller. As a result, if the standby state continues for a long time, there is a problem in that the sheet may cause curl wrinkles, creases, and the like.

  Therefore, the problem to be solved by the present invention is that, even if the apparatus is kept in a standby state for a long time, the sheet does not generate curl wrinkles or folds, and a sudden transport load is generated at the start of sheet feeding. Therefore, an object of the present invention is to provide a roll paper feeding device having a simple structure in which there is no possibility of errors in the conveyance by the conveyance rollers.

  Means for solving the problems of the present invention is that the roll paper is transported by both the transport roller provided downstream of the roll paper and the holding roller provided below the roll paper, and is slack in the standby state. In order to prevent the sheet from causing curl wrinkles or folds, the holding roller is rotated first when feeding is started.

  The roll paper feeding device according to claim 1 is configured to hold roll paper wound in a roll shape by a holding roller provided below, and to hold the roll paper by a conveyance roller provided downstream of the roll paper. In the roll paper feeding device that feeds the paper further downstream, the holding rollers are a pair of holding rollers, and one holding roller is provided with a roller driving means capable of feeding and winding, and in the standby state, A roll paper slack is created between the holding roller and the conveying roller, and a control unit is provided to control the holding roller to be driven first when feeding is started and then the conveying roller to be driven. As a result, curl wrinkles and folds are not generated on the paper in the standby state, and a sudden transport load is not generated at the start of paper feeding.

  The roll paper feeding device according to claim 2, wherein the roll paper wound in a roll shape is held by a holding roller provided below, and is nipped by a conveyance roller provided downstream of the roll paper, and the roll paper is fed out. Further, in the roll paper feeding device that conveys further downstream, the holding roller is a pair of holding rollers, provided with a roller driving means that can be fed and wound on one of the holding rollers, and further provided with a roll paper remaining amount detecting means, As the remaining amount of roll paper decreases, a control unit is provided for controlling so as to increase the driving amount of the roller driving means during winding. Thereby, when winding up to remove the slack of the roll paper, the remaining amount of the roll paper becomes lighter and lighter, and even if the frequency of occurrence of slip instantaneously between the holding roller and the roll paper increases, Sufficient slack can be removed.

  According to a third aspect of the present invention, there is provided the roll paper feeding device according to the first or second aspect, wherein the roller driving means is provided on a holding roller located upstream of the pair of holding rollers. As a result, at the time of winding to remove the slack of the roll paper, the drive is given only to the side that pulls the roll paper, so that wrinkles do not occur between the pair of holding rollers.

  According to a fourth aspect of the present invention, in the roll paper feeding device according to the second aspect, the remaining amount of roll paper detecting means is means for detecting the diameter of the roll paper. Thereby, a remaining amount detecting means with a simple structure can be achieved.

  The roll paper feeding method according to claim 5, wherein the roll paper wound in a roll shape is held by a holding roller provided below, and nipped by a conveyance roller provided downstream of the roll paper, and the roll paper is fed out. In the roll paper feeding method for carrying further downstream, a step of providing a slack in the roll paper between the carrying roller and the holding roller in the standby state, and rotating the holding roller first at the start of feeding, Rotating the transport roller. As a result, curl wrinkles and folds are not generated on the paper in the standby state, and a sudden transport load is not generated at the start of paper feeding.

  The roll paper feeding method according to claim 6, wherein the roll paper wound in a roll shape is held by a holding roller provided below, and nipped by a conveyance roller provided downstream of the roll paper, and the roll paper is fed out. In the roll paper feeding method for conveying further downstream, the step of providing slack in the roll paper between the conveyance roller and the holding roller by rotating the holding roller and feeding out the roll paper; A process of removing the slack by rotating the holding roller in the reverse direction to wind up the roll paper, and increasing the amount of rotation of the holding roller during the winding as the remaining amount of the roll paper decreases. Including a rotating step. Thereby, when winding up to remove the slack of the roll paper, the remaining amount of the roll paper becomes lighter and lighter, and even if the frequency of occurrence of slip instantaneously between the holding roller and the roll paper increases, Sufficient slack can be removed.

Thus, according to the present invention, since the roll paper between the conveying roller and the holding roller is provided with a slack, the roll paper does not cause curl wrinkles or creases on the paper even if the standby state of the apparatus continues for a long time. A paper feeding device can be obtained. In addition, since the holding roller is rotated first at the start of paper feeding, there is no sudden transport load, so there is no risk of errors in transport by the transport roller. In addition, there is an effect that a roll paper feeding device having a simple structure can be obtained.

  FIG. 1 is a schematic configuration diagram of the best mode for carrying out the present invention. In the figure, 1 is a ticket processing device for issuing predetermined tickets, 2 is provided in the ticket processing device 1, and a ticket opening for issuing the tickets to a customer, 3 is a ticket used for ticketing The roll paper 3 is held from below by two holding rollers 11A and 11B, which will be described later, and one holding roller 11A is driven by a driving source as will be described later. 3 can be paid out.

  4 is a cutter for cutting the roll paper 3 into a predetermined size of the ticket, 5 is predetermined information corresponding to the ticket on the surface of the ticket cut by the cutter 4, for example, issuing station name, issue date, amount, ticket A print head for visually printing information such as a number, 6 is predetermined information such as an issuing station name, an issue date, an amount of money, a ticket number, etc. A magnetic write head for magnetically recording information.

  Reference numeral 7 denotes a conveyance path that connects the storage position of the roll paper 3 to the ticket opening 2, and the cutter 4, the print head 5, and the magnetic light head 6 are arranged on the conveyance path.

  FIG. 2 is a configuration diagram showing in detail the paper feed portion of the roll paper 3 of the ticket processing apparatus 1. Reference numerals 11A and 11B denote two holding rollers for holding the roll paper 3 from below as described above, and the upstream holding roller 11A is driven by the stepping motor M1 via the belt 16. The holding roller 11B on the downstream side can be freely rotated. The reason for driving only the holding roller 11A on the upstream side is to drive only the pulling side of the roll paper 3 at the time of winding to remove the slack of the roll paper 3, and the pair of holding rollers 11A, It is possible to prevent wrinkles between 11B. The interval at which the two holding rollers 11 are arranged is smaller than the diameter of the paper tube 20 of the roll paper 3, and the roll paper 3 is held even when the remaining amount of the roll paper 3 runs out.

  Reference numeral 12 denotes a guide roller that guides the roll paper 3 wound around the paper tube 20 in the direction of the cutter 4 or the print head 5 so that the guided roll paper 3 is not bent and can be smoothly guided. It has a rotatable structure. Reference numerals 13 and 14 denote transport rollers provided downstream of the guide roller 12, which are driven by the stepping motor M2 through the belts 17 and 18, and the roll paper 3 is sandwiched between a pair of upper and lower rollers so that the roll paper 3 is sandwiched between the rolls. The paper 3 is conveyed to the cutter 4.

  Reference numeral 15 denotes a conveyance roller provided downstream of the cutter 4, which is driven by a stepping motor M3 through a belt 19, and holds the papers 26 cut by the cutter 4 with a pair of upper and lower rollers, and the printing Transport to the head 5.

  21 is a slack portion of the roll paper 3 that is operated by an operator (not shown) when setting the roll paper 3 wound around the paper tube 20, and 23 is a roll for the operator to set the tip portion 22 in the direction of the conveying roller 13. A paper suction port 24 is a guide plate that forms the roll paper suction port 23. Reference numeral 25 denotes a state in which the roll paper 3 is not slack.

  S1 is a sensor provided at the roll paper suction port 23, and detects the insertion of the leading end portion 22 of the roll paper 3 by the operation of the operator. When the tip 22 shields the optical axis of the sensor S1, the sensor S1 is turned on, the stepping motors M1 and M2 are driven, the holding roller 11A is rotated via the belt 16, and is simultaneously conveyed via the belts 17 and 18. The rollers 13 and 14 rotate while sandwiching the leading end portion 22 of the roll paper 3 to feed and convey the roll paper 3.

  S2 is a sensor provided downstream of the conveying roller 14, and when the tip portion 22 blocks the optical axis of the sensor S2, the sensor S2 is turned on, and when the passage of the tip portion 22 of the roll paper 3 is detected, a stepping motor Stop driving M1 and M2.

  S3 is a sensor that is provided downstream of the cutter 4 and detects the leading end portion 22 of the roll paper 3 conveyed by the conveying roller 15. When the leading end portion 22 blocks the optical axis of the sensor S3, the sensor S3 It becomes ON and the passage of the tip portion 22 is detected. Then, the cutter 4 is driven, the roll paper 3 is cut, and the tickets 26 are created. The distance from the cutter 4 to the sensor S3 is a predetermined size of the ticket 26.

  FIG. 3 is a block diagram of the ticket processing apparatus 1. In the figure, 31 is a timer for generating various times for control, 32 is an M1 driving unit for driving the stepping motor M1, 33 is an M2 driving unit for driving the stepping motor M2, and 34 is the stepping motor M3. This is an M3 driving unit that drives.

  35 is a sensor detection unit for detecting ON / OFF signals of the sensors S1 to S3, 36 is a cutter drive unit for driving the cutter 4, 37 is a print head drive unit for driving the print head 5, and 38 is the magnetic light head 6. A magnetic write head drive unit for driving, 39 is a control unit connected to and controlling them.

  Next, the setting operation of the roll paper 3 will be described with reference to FIG. FIG. 4 is a flowchart showing the setting operation of the roll paper 3. First, when the operator inserts the leading end portion 22 of the roll paper 3 into the roll paper suction port 23, the leading end portion 22 blocks the optical axis of the sensor S1, and the sensor S1 is turned on (step 101). When the sensor detection unit 35 detects this, the control unit 39 controls the M1 driving unit 32 and the M2 driving unit 33, drives the stepping motors M1 and M2 by the same amount, and rolls the holding roller 11A and the conveying rollers 13 and 14 The roll paper 3 is conveyed by rotating by the same rotation amount (conveyance amount) in the paper feeding direction (step 102).

  Thereafter, the control unit 39 controls the timer 31 and the sensor detection unit 35 to monitor the state of the sensor S2 (step 103), and if there is no change in the sensor S2 even after 3 seconds (step 104), The rotation of the stepping motors M1 and M2 is stopped and an error occurs (step 105).

  Within 3 seconds, the tip portion 22 of the roll paper 3 blocks the optical axis of the sensor S2, and when the sensor S2 is turned on, the rotation of the stepping motors M1 and M2 is stopped (step 106). At this time, the stepping motor M2 is kept in an excited state, and since the transport rollers 13 and 14 hold the roll paper 3, the roll paper 3 is not moved. Thereafter, immediately after the rotation of the stepping motor M1 is stopped, an adjustment time of 200 ms is set in consideration of the inertia remaining on the roll paper 3 wound around the paper tube 20 (step 107).

  Next, the following operation is performed in order to remove the slack (sag at the time of setting) generated when the leading end portion 22 of the roll paper 3 is inserted into the roll paper suction port 23 by the operator. That is, the control unit 39 controls the M1 driving unit 32 to drive the stepping motor M1, and rotates the holding roller 11A in the roll paper winding direction (step 108). For the driving time, the stepping motor M1 is driven for winding the roll paper 3 by 300 mm (step 109). Since the value of 300 mm differs depending on the size of the ticket processing apparatus 1, the outer shape of the roll paper 3 wound around the paper tube 20, and the setting method of the roll paper 3, an optimum value is actually determined by experiment.

  As a result of the above operation, the roll paper 3 is in a state where there is no slack at the time of setting, that is, a state indicated by reference numeral 25 in FIG. Thereafter, an adjustment time of 200 ms is set in consideration of the inertia of the roll paper 3 wound around the paper tube 20 (step 111).

  However, if the standby state continues for a long time in a state where there is no sag, curl wrinkles will occur along the roller diameter at the portion of the guide roller 12. Therefore, the control unit 39 controls the M1 driving unit 32 to rotate the stepping motor M1 in the roll paper feeding direction to create a sag (sag for preventing curl) (step 112). For the driving time, the stepping motor M1 is driven by the amount of 25 mm of the roll paper 3 wound around the paper tube 20 (step 113). Since the value of 25 mm varies depending on the inertia of the roll paper 3 wound around the paper tube 20, an optimum value is actually determined by experiment. Thereafter, the stepping motor M1 is stopped (step 114), and an adjustment time of 200 ms is set in consideration of the inertia of the roll paper 3 wound around the paper tube 20 (step 115).

  Next, the ticket issuing operation will be described with reference to FIGS. 5 and 6 are flowcharts showing the ticket issuing operation. In the ticket issuing operation, the roll paper 3 is in a state where the tip portion 22 is stopped at the position where the sensor S2 is turned on as described above (step 106), and the roll paper 3 wound around the paper tube 20 is fed out by 25 mm. This is a state in which a sag 21 (a sag for curling prevention) is generated by the amount (step 114).

  First, the control unit 39 controls the M1 driving unit 32 to rotate the stepping motor M1 in the roll paper feeding direction (step 201). The driving time is that the stepping motor M1 is driven by an amount corresponding to the roll paper 3 being fed 10 mm, and the holding roller 11A is rotated (step 202).

  After the roll paper 3 wound around the paper tube 20 is fed out 10 mm, the control unit 39 controls the M2 driving unit 33 and the M3 driving unit 34 to drive the stepping motors M2 and M3 by the same amount as the stepping motor M1, thereby conveying the roller 13. , 14, 15 are rotated by the same rotation amount (conveyance amount) (step 203). The reason why the transport rollers 13, 14, and 15 are rotated after the roll paper 3 is fed out by 10 mm is that when a slip occurs between the roll paper 3 wound around the paper tube 20 and the roller 11A, it becomes a load. This is to prevent it from falling out.

  Thereafter, the control unit 39 controls the timer 31 and the sensor detection unit 35 to monitor the state of the sensor S3 (step 204). If the sensor S3 does not change even after 3 seconds have passed (step 206), the rotation of the stepping motors M1 and M2 is stopped and an error occurs (step 207). Within 3 seconds, when the leading end portion 22 of the roll paper 3 blocks the optical axis of the sensor S3 and the sensor S3 is turned on, the control unit 39 determines that the ticket 26 has a predetermined cutting length (step 208). ), The rotation of the stepping motors M1, M2, and M3 is stopped (step 209). At this time, the stepping motor M2 is kept in an excited state, and the roll paper 3 does not move because the transport rollers 13 and 14 sandwich the roll paper 3. Thereafter, an adjustment time of 200 ms is set in consideration of the inertia of the roll paper 3 wound around the paper tube 20 (step 210).

  Further, the control unit 39 controls the cutter driving unit 36, drives the cutter 4, cuts the roll paper 3, and obtains the tickets 26 (step 211). Thereafter, the control unit 39 controls the M3 driving unit 34, drives the stepping motor M3, and rotates the transport roller 15, thereby transporting the cut bills 26. Further, the control unit 39 controls the print head drive unit 37 and the magnetic light head drive unit 38 to perform printing by the print head 5, perform magnetic recording by the magnetic light head 6, and transport the tickets 26 to the ticket issuing slot 2. .

  Finally, by rotating the holding roller 11A by the amount of 35 mm of the roll paper 3 wound around the paper tube 20, an operation for removing slack is performed, and the ticketing operation is completed.

  At this time, if the remaining amount of the roll paper 3 is small, the roll paper 3 becomes lighter, and it is conceivable that the frequency at which slip occurs instantaneously between the holding roller 11A and the roll paper 3 increases to some extent. As a result, there is a possibility that the slack cannot be sufficiently removed. Therefore, when the remaining amount of the roll paper 3 wound around the paper tube 20 decreases, it is necessary to increase the rotation amount of the holding roller 11A.

  FIG. 7 is an explanatory diagram showing a method for detecting the remaining amount of the roll paper 3. S 4 is a sensor that detects the remaining amount of the roll paper 3 wound around the paper tube 20. Since the roll paper 3 is held on the pair of holding rollers 11A and 11B, after the roll paper 3 is set, the size of the roll paper 3A indicated by a broken line in the drawing is shown, and the sensor S4 is ON. Thereafter, when the remaining amount decreases, it becomes smaller like the roll paper 3B and the sensor S4 is turned OFF.

  The control unit 39 monitors the state of the sensor S4 (step 212). If the sensor S4 is ON, the control unit 39 controls the M1 drive unit 32 to drive the stepping motor M1 (step 215). The holding roller 11A is rotated by an amount equivalent to winding the roll paper 3 by 35 mm (step 216). When the sensor S4 is turned OFF, the control unit 39 controls the M1 driving unit 32 to drive the stepping motor M1 (step 213), and rotates the holding roller 11A by an amount to take up the roll paper 3 by 65 mm (step S213). Step 214). That is, in the case of step 214, the amount of rotation of the holding roller 11A is increased in consideration of the fact that the frequency of instantaneous slip between the holding roller 11A and the roll paper 3 increases to some extent as described above in the case of step 216. There is a need to.

  After rotating the holding roller 11A by a predetermined amount, the stepping motor M1 is stopped under the control of the control unit 39 (step 217). Thereafter, an adjustment time of 200 ms is set in consideration of the inertia of the roll paper 3 wound around the paper tube 20 (step 218).

  This state where the ticketing operation is completed is a state where the roll paper 3 is not slack. However, if the standby state continues in this state for a long time, the curl wrinkles along the roller diameter at the guide roller 12 as described above. Therefore, the control unit 39 controls the timer 31 to monitor whether or not a state in which there is no ticketing operation elapses for 10 minutes or more (step 219).

  The control unit 39 controls the M1 driving unit 32 to rotate the stepping motor M1 in the roll paper feeding direction to create a sag (a curl prevention sag) (step 220). As for the driving time, the stepping motor M1 is driven as much as 25 mm of the roll paper 3 wound around the paper tube 20 as described above (step 221). Thereafter, the stepping motor M1 is stopped (step 222), and an adjustment time of 200 ms is set in consideration of the inertia of the roll paper 3 wound around the paper tube 20 (step 223).

  In the description of the flowchart showing the setting operation of the roll paper 3 wound around the paper tube 20 in FIG. 4, from step 108 to step 110 for removing slack during setting, the roll paper 3 is taken up by 300 mm and set. After removing the slack, in step 112 to step 114, the roll paper 3 is fed out 25 mm to create a slack for curling prevention. However, the present invention is not limited to this, and in step 109 for removing the slack at the time of setting, the roll paper 3 May be controlled to wind up 275 mm.

It is a schematic block diagram of the best form for implementing this invention. It is a block diagram which shows the paper feed part of the roll paper of a ticket processing apparatus in detail. It is a block diagram of a ticket processing apparatus. 6 is a flowchart illustrating a roll paper setting operation. It is a flowchart which shows ticket issuing operation | movement. It is a flowchart which shows ticket issuing operation | movement. It is an explanatory diagram showing a method for detecting the remaining amount of roll paper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ticket processing apparatus 2 Ticket opening 3 Roll paper 4 Cutter 11A, 11B Holding roller 12 Guide roller 13, 14, 15 Conveyance roller 16, 17, 18, 19 Belt 26 Tickets S1, S2, S3 Sensor M1, M2, M3 Stepping motor

Claims (6)

In a roll paper feeding device that holds roll paper wound in a roll shape by a holding roller provided below, and feeds the roll paper after being nipped by a conveyance roller provided downstream of the roll paper and then conveyed further downstream ,
The holding roller is a pair of holding rollers, provided with a roller driving means capable of being wound and wound on one holding roller, and creating a slack of roll paper between the holding roller and the conveying roller in a standby state, A roll paper feeding device comprising: a control unit that controls the holding roller to be driven first at the start of paper feeding and then to drive the transport roller. In a roll paper feeding device that holds roll paper wound in a roll shape by a holding roller provided below, and feeds the roll paper after being nipped by a conveyance roller provided downstream of the roll paper and then conveyed further downstream The holding rollers are a pair of holding rollers, and one of the holding rollers is provided with a roller driving means capable of being fed and wound, and further provided with a remaining amount of roll paper detecting means. A roll paper feeding device comprising a control unit for controlling to increase the driving amount of the roller driving means at the time of taking. 3. The roll paper feeding device according to claim 1, wherein the roller driving means is provided on a holding roller located upstream of the pair of holding rollers. 3. The roll paper feeding device according to claim 2, wherein the remaining roll paper detection means is means for detecting the diameter of the roll paper. In a roll paper feeding method in which roll paper wound in a roll shape is held by a holding roller provided below, held between conveyance rollers provided downstream of the roll paper, fed out of the roll paper, and further conveyed downstream ,
Providing a slack in the roll paper between the transport roller and the holding roller in a standby state;
A roll paper feeding method comprising a step of rotating the holding roller first at the start of paper feeding and then rotating the transport roller. In a roll paper feeding method in which roll paper wound in a roll shape is held by a holding roller provided below, sandwiched by a conveyance roller provided downstream of the roll paper, fed out of the roll paper, and further conveyed downstream ,
Rotating the holding roller to feed out the roll paper, providing a slack in the roll paper between the transport roller and the holding roller, and rotating the holding roller in reverse to wind the roll paper. Removing the slack by removing the roll paper, and a step of rotating the holding roller at the time of winding to increase the rotation amount as the remaining amount of the roll paper decreases. Paper method.

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