Printer

Abstract

To provide a printer capable of preventing deterioration of adhesive force due to curling and drying in a re-moistening sheet.SOLUTION: A printer 1 according to the present invention includes: a printer body 10 that performs printing on a surface of a sheet P continuously fed from a roll sheet R whose rear surface is applied with a re-moistening paste; a sheet discharge device 20 that controls a discharge operation of the sheet P printed by the printer body 10; and a water imparting device 30 that applies water to the rear surface of the sheet P discharged from the sheet discharge device 20 to impart adhesiveness. The printer body 10 feeds the sheet at a first sheet feed speed during a printing operation of the sheet P. The sheet discharge device 20 holds the feed of the sheet P during the printing operation to form a loop of the sheet P, and after printing of the sheet P is completed, feeds the looped sheet P all at once at a second sheet feed speed that is faster than the first sheet feed speed.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a printer that prints on paper with a remoisturizing glue applied to the back side, and more particularly to a paper ejection method for a printer that prints on roll paper. [Background technology]

[0002] In printers that print and issue receipts, tickets, etc., if the recipient forcibly pulls out the piece of paper that is discharged from the outlet during ticket issuing, or blocks the ticket outlet and prevents the paper from being discharged, this can cause printing defects or paper jams. To prevent these from happening, printers are available that have a presenter function that temporarily stores the paper inside the device until printing and cutting of the paper are complete, and exposes the leading edge of the paper from the outlet after cutting is complete (see Patent Document 1).

[0003] Printed labels with necessary information must be affixed to food packages and distribution items, and label stickers are often used in such situations. When using label stickers, traditionally, information was printed on the surface of the label sticker, and then the label sticker was peeled off the backing and affixed to the target object. However, label stickers require a backing to protect the adhesive surface, and the label sticker must be peeled off from the backing. Furthermore, the backing is unnecessary after the label sticker is peeled off, which is an environmentally unfriendly method.

[0004] Regarding technology for imparting adhesiveness to paper, for example, Patent Document 2 describes an adhesive paper that prevents curling due to stretching of the printing paper by applying a remoisturizing adhesive to one side of the paper and a surface treatment agent for printing characters, figures, or the like to the other side.

[0005] Patent Document 3 describes a dispenser for water-based adhesive tapes that adds moisture to the water-based adhesive that has been applied in advance to the adhesive surface of the adhesive tape. Patent Document 4 describes a water-applying device that can apply water evenly to the back surface (adhesive surface) of a packing tape. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-273260 [Patent Document 2] JP 2013-231256 A [Patent Document 3] JP 2001-089012 A [Patent Document 4] Utility Model Registration No. 3212950 Summary of the Invention [Problem to be solved by the invention]

[0007] As described above, paper with remoisturizing glue applied to the back side is advantageous in terms of workability and the environment because it does not require a backing paper. However, when used as printer paper, there are problems such as deformation due to curling of the paper, and when the ticket length is long, the leading edge of the paper dries out and the adhesive strength decreases, making it difficult to attach the paper.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a printer capable of preventing curling of re-moisturized paper and loss of adhesive strength due to drying. [Means for solving the problem]

[0009] In order to solve the above problems, the printer of the present invention is a printer that prints on paper that has a remoisturizing glue pre-applied to the back side, and comprises a printer main body that prints on the front side of the paper that is continuously unwound from a roll of paper, a paper discharge device that controls the discharge operation of the paper printed by the printer main body, and a water application device that applies water to the back side of the paper discharged from the paper discharge device to make it sticky, and is characterized in that the printer main body feeds the paper at a first paper feed speed during the printing operation of the paper, and the paper discharge device suspends the feeding of the paper during the printing operation and loops the paper, and after printing of the paper is completed, feeds the looped paper in one go at a second paper feed speed that is faster than the first paper feed speed.

[0010] A device called a dispenser is generally known as a device that supplies water to a paper surface coated with water-based glue. This is intended for packaging tapes such as water-based gummed tape, and is not intended for printing designs freely and issuing tickets. For water-based gummed tape, the paper can be sent out at high speed without considering speed restrictions, and there is no problem with print quality. However, in the case of printer paper, it is necessary to ensure the print quality of characters and barcodes, and the paper feed speed varies depending on the print density, so it is difficult to simply discharge the paper at a constant speed. However, the printer according to the present invention separates the paper feed operation during printing from the paper feed operation after printing is completed, and waters the paper after printing is completed, so that water can be added while the paper is discharged at high speed, and the curling of the paper and the decrease in adhesive strength due to drying of the tip of the paper can be suppressed.

[0011] The water application device preferably includes a brush that applies water to the back surface of the paper discharged from the paper discharge device, a water tank that stores water to be supplied to the brush, a detachable tank that stores water to be supplied to the water tank, and a paper pressing member that presses the paper from the front surface side of the paper discharged from the paper discharge device. With this configuration, water can be applied to the back surface of the paper discharged from the paper discharge device to impart adhesion.

[0012] In the present invention, it is preferable that the tank has a water inlet and a water supply valve that controls opening and closing of the water inlet, the tank is disposed above the water tank, and the tank supplies water to the water tank so that the water level in the water tank is maintained at a first water level when the tank is placed in a first planar position, and the water level in the water tank is maintained at a second water level lower than the first water level when the tank is placed in a second planar position different from the first planar position. With this configuration, the water level in the water tank can be changed to adjust the amount of water permeating the brush without replacing the tank or using a spacer.

[0013] It is preferable that when the tank is installed at the first horizontal position, the lower end of the water supply port is located at a first height position, and when the tank is installed at the second horizontal position, the lower end of the water supply port is located at a second height position lower than the first height position, the first water level is equal to the first height position, and the second water level is equal to the second height position. With this configuration, the amount of water permeating the brush can be adjusted by changing the water level in the water tank without replacing the tank or using a spacer.

[0014] It is preferable that a recess is provided in the bottom of the tank, a protrusion corresponding to the recess is provided on a tank installation surface on which the tank is installed, and when the tank is installed in the first planar position, the recess does not engage with the protrusion, thereby placing the tank at a third height position, and when the tank is installed in the second planar position, the recess engages with the protrusion, thereby placing the tank at a fourth height position lower than the third height position. With this configuration, the amount of water permeating the brush can be adjusted by changing the water level in the water tank without replacing the tank or using a spacer.

[0015] It is preferable that the water tank has an interference rod, and when the tank is attached to the water application device, the interference rod presses the water supply valve to open the water supply port, and when the tank is removed from the water application device, the water supply valve closes the water supply port. With this configuration, the water supply port can be reliably opened by simply setting the tank.

[0016] It is preferable that the water tank has a first interference rod and a second interference rod shorter than the first interference rod, and when the tank is installed at the first horizontal position, the first interference rod lifts the water supply valve to open the water supply port, when the tank is installed at the second horizontal position, the second interference rod lifts the water supply valve to open the water supply port, and when the tank is removed from the water application device, the water supply valve closes the water supply port. With this configuration, the water supply port can be opened simply by setting the tank at a predetermined position, and differences in the height of the water supply port can be easily accommodated.

[0017] It is preferable that the tank is provided at a position that does not overlap with the printer body and the paper discharge device when viewed from the front and from above. With this configuration, a large-capacity tank can be adopted without making special efforts to the printer body and the paper discharge device.

[0018] The present invention provides a thermal printer that can prevent the curling of re-wettable paper and the loss of adhesive strength due to drying, and can also provide ... Effect of the Invention

[0019] According to the present invention, it is possible to provide a printer capable of preventing curling of re-moisturized paper and loss of adhesive strength due to drying. [Brief description of the drawings]

[0020] [Figure 1]FIG. 1 is a front cross-sectional view showing a schematic configuration of a printer according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic side cross-sectional view of the printer taken along line Z1-Z1 in FIG. [Diagram 3] FIG. 3 is a schematic side cross-sectional view of the printer taken along line Z2-Z2 in FIG. 1, and in particular shows the configuration of the water application device. [Figure 4] FIG. 4 is an explanatory diagram of the arrangement of the water sprinkling device, where FIG. 4(a) shows the water level in the water tank when the tank is installed in the rear position (first installation position), and FIG. 4(b) shows the water level in the water tank when the tank is installed in the rear position. [Diagram 5] FIG. 5 is an explanatory diagram of the arrangement of the water sprinkling device, where FIG. 5(a) shows the tank when installed in the forward position (second installation position), and FIG. 5(b) shows the water level in the water tank when the tank is installed in the forward position. [Figure 6] FIG. 6 is an explanatory diagram of the printing operation of the printer according to this embodiment. [Figure 7] FIG. 7 is an explanatory diagram of the paper cutting operation of the printer according to this embodiment. [Figure 8] FIG. 8 is an explanatory diagram of the paper reserve operation of the printer according to the embodiment. [Figure 9] FIG. 9 is an explanatory diagram of the paper discharge and water application operations of the printer according to this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] FIG. 1 is a front cross-sectional view showing the schematic configuration of a printer according to an embodiment of the present invention, FIG. 2 is a schematic side cross-sectional view of the printer taken along line Z1-Z1 in FIG. 1, and FIG. 3 is a schematic side cross-sectional view of the printer taken along line Z2-Z2 in FIG. 1.

[0023] 1 and 2, the printer 1 includes a printer main body 10 that prints on paper P, a paper discharge device 20 that controls the discharge operation of the paper P printed by the printer main body 10, and a water application device 30 that applies water to the back surface of the paper P discharged from the paper discharge device 20. The printer main body 10 and the paper discharge device 20 perform operations such as printing, cutting, discharging, and temporarily storing the paper P in response to instructions from a control unit (not shown).

[0024] The printer body 10 is, for example, a thermal printer, and is equipped with a roll paper storage section 11 that stores roll paper R (thermal roll paper) that continuously supplies paper P such as thermal paper, a printing section 12 that prints information such as characters and figures on the paper P fed from the roll paper R, and a cutting section 15 that cuts the printed paper P.

[0025] The printing unit 12 includes a print head 13 that faces the front surface (thermal surface) of the paper P, a platen roller 14 that contacts the back surface of the paper P opposite the thermal surface to feed out the paper P, and a drive motor (not shown) that drives the platen roller 14. The printing unit 12 performs a printing operation according to instructions from the control unit.

[0026] The cutting unit 15 includes a fixed blade 15a, a movable blade 15b that faces the fixed blade 15a across the paper transport path, and a movable blade drive mechanism 15c that drives the movable blade 15b to move forward and backward. The cutting unit 15 cuts the paper P in response to an instruction from the control unit.

[0027] Paper P supplied from the roll paper R is printed by the print head 13, then sent out by the platen roller 14 and discharged from the paper discharge outlet 16 of the printer body 10. As shown in the figure, the paper discharge outlet 16 of the printer body 10 is connected to the paper inlet of the paper discharge device 20, and the paper P discharged from the printer body 10 is fed into the paper discharge device 20. When an instruction to cut the paper P is given by the control unit, the printer body 10 temporarily suspends the paper feed operation by the platen roller 14, and the cutting unit 15 cuts the paper P. The cut paper P is then transported by the transport mechanism on the paper discharge device 20 side.

[0028] The paper discharge device 20 has a function of either sending out and discharging the paper P printed by the printer body 10 or temporarily storing it within the device. For this reason, the paper discharge device 20 is provided with a temporary storage section 21 that constitutes a temporary storage space for the received paper P, and a paper transport section 22 that transports the paper P along a discharge path 23.

[0029] The temporary storage section 21 is a paper storage space that spreads below the discharge path 23 that runs from the paper discharge outlet 16 of the printer body 10 toward the discharge outlet 3 of the printer 1. The paper transport section 22 includes a transport roller 25 provided in contact with the discharge path 23 near the discharge outlet 3, and a drive mechanism (not shown) including a drive motor that drives the transport roller 25. The transport roller 25 is supported by a rotating shaft that is disposed below the discharge path 23, and an upper end of the transport roller 25 is in contact with the discharge path 23. The temporary storage section 21 forms an open space whose width spreads downward (to the bottom), so that a large downward loop of the paper P can be formed within the temporary storage section 21.

[0030] The paper discharge device 20 is provided with a paper detection sensor 26 that detects the presence or absence of paper P. The paper detection sensor 26 is disposed on the discharge path 23, and detects whether or not paper P exists on the discharge path 23, and can control whether or not paper P is looped in the temporary holding section 21.

[0031] The control unit is connected to the drive motor of the paper discharge device 20 and the paper detection sensor 26. The control unit can measure the paper feed amount by acquiring the rotation speed of the transport roller 25, for example. The control unit is configured to drive the drive motor in an appropriate rotation direction and rotation speed to transport the paper P. When the paper detection sensor 26 detects the leading edge of the paper P, the control unit stops the rotation of the transport roller 25 and suspends the transport of the paper P until printing and cutting of the paper P are completed. The temporary storage unit 21 forms an open space whose width increases downward (to the bottom), so that a large downward loop of the paper P can be formed within the temporary storage unit 21.

[0032] The water application device 30 is located downstream of the paper discharge device 20 in the paper discharge path, and is provided to apply water to the back surface of the paper P discharged from the paper discharge device 20. By uniformly wetting the back surface of the printed paper P, it is possible to impart uniform adhesiveness to the paper P, and the printed paper P can be easily attached to the packaging surface of a food package or a delivery item.

[0033] The water application device 30 of this embodiment comprises a brush 31 for applying water to the back surface of the paper P discharged from the paper discharge device 20, a water tank 32 for storing water to be supplied to the brush 31, a tank 33 for storing water to be supplied to the water tank 32, and a paper pressing member 36 that is positioned on the opposite side of the brush 31 across the transport path of the paper P (on the front surface side of the paper P) and for pressing the paper P against the brush 31.

[0034] The numerous fiber bundles that make up brush 31 extend diagonally upward from inside water tank 32, and the tips of the fiber bundles protrude above water tank 32 and reach paper pressing member 36. Water in water tank 32 rises through the fiber bundles by capillary action and wets the tips of the fiber bundles, so that the tips of brush 31 can be kept constantly moist and water can be applied to paper P that comes into contact with brush 31.

[0035] In this embodiment, the tank 33 is disposed above the water tub 32, and is configured to be detachable from the water application device 30. As shown in Fig. 1, the tank 33 has a slim design in the width direction (X direction) of the printer 1, and is provided next to the printer body 10 and the paper discharge device 20 when the printer 1 is viewed from the front side. In other words, the tank 33 is provided in a position that does not overlap with the printer body 10 and the paper discharge device 20 when viewed from the front and from above. With this configuration, the capacity of the tank 33 can be increased without any special design changes to the printer body 10 and the paper discharge device 20.

[0036] A water supply port 34 is provided at the bottom of the tank 33, and a water supply valve 35 is provided at the water supply port 34. The water supply valve 35 operates to open the water supply port 34 when the tank 33 is attached to the water application device 30, and to close the water supply port 34 when the tank 33 is lifted up and removed from the water application device 30.

[0037] Water supply valve 35 is biased downward by a spring to close water supply port 34, but when water supply valve 35 is lifted, water supply port 34 opens and water in tank 33 is supplied to water tub 32. When tank 33 is set at a specified water supply position, one of two interference rods 37a, 37b provided on the water tub 32 side comes into contact with water supply valve 35, lifting water supply valve 35 and opening water supply port 34. When water supply port 34 is open, water in tank 33 is supplied to water tub 32 through water supply port 34, and the water level in water tub 32 is always maintained at the same height as the bottom end of water supply port 34.

[0038] Figures 4 and 5 are explanatory diagrams of the arrangement of the water application device 30, with Figure 4(a) showing the case where the tank 33 is installed in the rear position (first installation position), Figure 4(b) showing the water level (first water level) in the water tub 32 when the tank 33 is installed in the rear position, Figure 5(a) showing the case where the tank 33 is installed in the front position (second installation position), and Figure 5(b) showing the water level (second water level) in the water tub 32 when the tank 33 is installed in the front position.

[0039] As shown in Fig. 4(a), when the tank 33 is installed at a relatively rear position (first plane position) in the longitudinal direction (Y direction) of the printer 1, the recess 33a formed on the bottom surface 33b of the tank 33 does not engage with the protrusion 38a formed on the upper surface (tank installation surface) of the tank installation stand 38, and the protrusion 38a interferes with the bottom surface 33b of the tank 33, causing the tank 33 to be installed at a relatively high position (third height position). As a result, as shown in Fig. 4(b), the height position of the water supply port 34 protruding downward from the bottom surface 33b of the tank 33 is also installed at a relatively high position (first height position) within the water tub 32.

[0040] 5(a), when the tank 33 is installed at a relatively forward position (second planar position) in the longitudinal direction (Y direction) of the printer 1, the recess 33a formed on the bottom surface 33b of the tank 33 engages with the protrusion 38a formed on the upper surface (tank installation surface) of the tank installation stand 38, and the protrusion 38a does not interfere with the bottom surface 33b of the tank 33, so that the tank 33 is installed at a relatively low position (fourth height position). As a result, the height position of the water supply port 34 protruding downward from the bottom surface 33b of the tank 33 is also installed at a relatively low position (second height position) within the water tub 32, as shown in FIG. 5(b).

[0041] Two interference rods 37a, 37b of different lengths (heights of upper ends) are provided in the water tank 32. The first interference rod 37a is a relatively long rod and is provided to correspond to a relatively high position of the water supply valve 35 when the tank 33 is installed in a rear position. The second interference rod 37b is a relatively short rod and is provided to correspond to a relatively low position of the water supply valve 35 when the tank 33 is installed in a front position. By preparing an interference rod 37 according to the installation height of the water supply valve 35, it is possible to correspond to a change in the height position of the water supply valve 35, and the water surface height in the water tank 32 can be changed.

[0042] The water supply valve 35 is biased downward by a spring, and a force that closes the water supply port 34 is always acting on the water supply valve 35. Therefore, when the tank 33 is removed from the water application device 30, the water supply valve 35 seals the water supply port 34, thereby preventing water leakage from the water supply port 34.

[0043] On the other hand, when the tank 33 is attached to the water application device 30, either one of the interference rods 37a, 37b presses the water supply valve 35 to open the water supply port 34, and water supply from the tank 33 to the water tub 32 begins. In particular, when the tank 33 is installed at the rear position, the first interference rod 37a presses the water supply valve 35 to open the water supply port 34. Also, when the tank 33 is installed at the front position, the second interference rod 37b presses the water supply valve 35 to open the water supply port 34.

[0044] When the water supply valve 35 is open, the water level of the water 5 in the water tub 32 is maintained at the same height as the lower end of the water supply port 34. Therefore, if the height position of the water supply port 34 is high, the water level in the water tub 32 will be high (see FIG. 4), and if the height position of the water supply port 34 is low, the water level in the water tub 32 will be low (see FIG. 5).

[0045] As described above, since the numerous fiber bundles constituting brush 31 extend upward from inside water tank 32, the amount of water penetration into the tip of brush 31 is affected by the water level in water tank 32. When the water level is high, the distance from the surface of water 5 to the tip of brush 31 is short, so water can easily reach the tip of brush 31. Therefore, the amount of water applied by brush 31 can be increased. On the other hand, when the water level is low, the distance from the surface of water 5 to the tip of brush 31 is long, so water does not easily reach the tip of brush 31. Therefore, the amount of water applied by brush 31 can be reduced.

[0046] Depending on the thickness and material of the paper P and the amount and components of the remoistened glue applied, it may be better to apply more water to the paper P or less, and it is desirable to adjust the amount of water depending on the paper being used. The water application device 30 according to this embodiment can adjust the amount of water sucked up by the brush 31 by changing the installation position of the tank 33 to change the water level in the water tub 32, thereby making it possible to easily change the amount of water applied to the paper P.

[0047] Next, the operation of the printer 1 according to this embodiment will be described in detail with reference to FIGS.

[0048] In response to an instruction from the control unit, the printer body 10 starts a printing operation on the paper P. The printed paper P is sequentially sent out by the platen roller 14 and discharged from the printer body 10.

[0049] 6, the leading edge of the paper P fed into the paper discharge device 20 passes through a discharge path 23 formed above the temporary storage section 21 and reaches a position immediately before the water application device 30. At this time, the conveying roller 25 is rotating, so that the leading edge of the paper P can be reliably sent along the discharge path 23.

[0050] When the paper detection sensor 26 detects that the leading edge of the paper P has reached a position immediately before the water application device 30, the conveying rollers 25 are temporarily stopped. As a result, the leading edge of the paper P stops just before it leaves the paper discharge device 20, as shown in FIG.

[0051] As the printing operation by the printer body 10 continues, the length of the paper P fed into the paper discharge device 20 becomes even longer. However, the leading end of the paper P is stopped from being fed out by the transport rollers 25, and so, as shown in Fig. 7, the long paper P that has nowhere to go bends between the printer body 10 and the transport rollers 25, forming a downward loop, and is temporarily stored in the temporary storage section 21. As shown in the figure, an opening is formed below the temporary storage section 21, and an open space extends beyond it, so that the loop of the paper P can pass through the opening and form a large loop.

[0052] When the printing operation by the printer body 10 is completed, the paper P is cut by the cutting unit 15 as shown in Fig. 8. Thereafter, as shown in Fig. 9, the rotation of the transport rollers 25 is resumed, and the paper P is discharged from the discharge port 3 and sequentially fed into the water application device 30. The transport rollers 25 feed the looped paper P in one go at a paper feed speed (second paper feed speed) faster than the paper feed speed (first paper feed speed) during the printing operation by the printer body 10. It is preferable that the paper discharge device 20 feeds the paper P at the maximum speed at which it can be output.

[0053] The water application device 30 applies water to the back surface of the paper P with a brush 31 to make it sticky. As described above, during the printing operation by the printer body 10, the paper P is looped in the paper discharge device 20 and discharge is temporarily suspended, and after printing and cutting are completed, the paper P is discharged all at once while water is applied. Since the paper feed speed during water application is faster than the paper feed speed during printing, it is possible to shorten the time it takes to apply water to the entire paper, and it is possible to prevent curling of the paper P and a decrease in adhesive strength due to drying of the leading edge of the paper P to which water was initially applied.

[0054] As described above, the printer 1 according to this embodiment comprises a printer main body 10, a paper discharge device 20 that controls the discharge operation of the paper P printed by the printer main body 10, and a water application device 30 that applies water to the back surface of the paper P discharged from the paper discharge device 20 to make it sticky. During the printing operation of the paper P, the printer main body 10 feeds the paper P at a paper feed speed (first paper feed speed) suitable for the printing operation, and the paper discharge device 20 suspends the feeding of the paper P during the printing operation and loops the paper P, and after printing and cutting of the paper P are completed, feeds the looped paper P all at once at a paper feed speed (second paper feed speed) faster than during the printing operation, thereby preventing the paper P from curling or losing its adhesiveness due to drying.

[0055] In addition, in the printer 1 according to this embodiment, the height position of the water inlet 34 can be changed by changing the installation position of the tank 33, thereby changing the water level in the water tank 32, and therefore the amount of water that penetrates the brush 31 can be adjusted.

[0056] The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention, and it goes without saying that these modifications are also included in the scope of the present invention.

[0057] For example, in the above embodiment, the water level in the water tank 32 can be changed in two stages by changing the installation position of the tank 33, but it is also possible to change it in three or more stages by setting the installation position of the tank 33 in three or more places. Also, in the above embodiment, the height position of the water supply port 34 is changed together with the tank 33 by changing the installation position of the tank 33, but it is also possible to change the water level in the water tank 32 without changing the installation position of the tank 33 by preparing in advance a plurality of types of tanks 33 with different heights of the water supply port 34 and changing the tank 33 itself. Alternatively, it is also possible to change the water level in the water tank 32 by inserting a spacer between the tank 33 and the tank installation surface to adjust the height of the tank 33.

[0058] In the above embodiment, the temporary storage unit 21 is provided below the discharge path 23, but it is also possible to provide the temporary storage unit 21 above the discharge path 23. In this case, an upward loop of the paper P is formed in the temporary storage unit 21. [Explanation of symbols]

[0059] 1. Printer 3 Printer outlet 5 water 10 Printer body 11 Paper roll compartment 12 Printing Department 13 Print Head 14 Platen roller 15 Cut section 15a fixed blade 15b Movable blade 15c Movable blade drive mechanism 16 Paper outlet 20 Paper ejection device 21 Temporary Holding Department 22 Paper transport section 23 Excretion Route 25 Transport roller 26 Paper detection sensor 30 Watering device 31 Brush 32 Aquarium 33 Tank 33a Recess 33b Bottom of the tank 34 Water inlet 35 Water supply valve 36 Paper holding member 37 Interference rod 37a First interference rod 37b Second interference rod 38 Tank installation stand 38a Convex P paper R Roll paper

Claims

1. A printer that prints on paper with a remoisturizing adhesive pre-applied on the back side, a printer body for printing on the surface of the paper continuously fed from a roll of paper; a paper discharge device that controls the discharge operation of the paper printed by the printer body; a water application device that applies water to the back surface of the paper discharged from the paper discharge device to make the paper sticky, the printer body feeds the paper at a first paper feed speed during a printing operation on the paper; The printer is characterized in that the paper discharge device suspends the feeding of the paper during the printing operation, loops the paper, and after printing of the paper is completed, feeds the looped paper in one go at a second paper feed speed faster than the first paper feed speed.

2. The water application device is a brush for applying water to the back surface of the paper discharged from the paper discharge device; A water tank for storing water to be supplied to the brush; A detachable tank for storing water to be supplied to the water tank; The printer according to claim 1 , further comprising a paper pressing member that presses a front surface side of the paper discharged from the paper discharge device.

3. The tank has a water supply port and a water supply valve that controls opening and closing of the water supply port, The tank is disposed above the water tank, The tank is When the water tank is placed in the first horizontal position, the water level in the water tank is maintained at a first water level; 3. The printer according to claim 2, wherein when the printer is installed in a second planar position different from the first planar position, water is supplied to the water tank so that the water level in the water tank is maintained at a second water level lower than the first water level.

4. When the tank is installed in the first horizontal position, a lower end of the water supply port is located at a first height position, When the tank is installed at the second horizontal position, a lower end of the water supply port is located at a second height position that is lower than the first height position, the first water level is equal to the first elevation; The printer of claim 3 , wherein the second water level is equal to the second elevational position.

5. A recess is provided in the bottom of the tank, a tank installation surface on which the tank is installed is provided with a protrusion corresponding to the recess, When the tank is placed at the first horizontal position, the recess and the protrusion do not engage with each other, thereby placing the tank at a third height position; The printer according to claim 4 , wherein when the tank is installed in the second horizontal position, the recess engages with the protrusion, thereby positioning the tank at a fourth height position lower than the third height position.

6. The water tank has an interference rod, When the tank is attached to the water application device, the interference rod presses the water supply valve to open the water supply port, The printer of claim 3 , wherein the water inlet valve closes the water inlet when the tank is removed from the water application device.

7. the water tank has a first interference rod and a second interference rod shorter than the first interference rod, When the tank is installed in the first horizontal position, the first interference rod lifts the water supply valve to open the water supply port, When the tank is installed in the second horizontal position, the second interference rod lifts the water supply valve to open the water supply port, The printer of claim 4 , wherein the water inlet valve closes the water inlet when the tank is removed from the water application device.

8. The printer according to claim 2 , wherein the tank is provided at a position that does not overlap with the printer body and the paper discharge device when viewed from the front and from above.

9. 9. The printer according to claim 1, wherein the roll paper is a thermal roll paper, and the printer body is a thermal printer.

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