WO2020179847A1

WO2020179847A1 - Printer

Info

Publication number: WO2020179847A1
Application number: PCT/JP2020/009270
Authority: WO
Inventors: 優和松井; 健弘菊井; 卓郎神山
Original assignee: シチズン時計株式会社; シチズン・システムズ株式会社
Priority date: 2019-03-04
Filing date: 2020-03-04
Publication date: 2020-09-10
Also published as: JP7414800B2; JPWO2020179847A1

Abstract

The purpose of the present invention is to provide a printer in which it is possible to prevent rolled paper from being pulled out obliquely. The printer according to one embodiment of the present invention is characterized by having: an accommodation part in which rolled paper is accommodated; a reference surface which is provided on one side of the accommodation part in the axial direction of the rolled paper; a printing part which performs printing on the paper; a feeder part which feeds the paper from the accommodation part to the printing part; and a first paper roller and a second paper roller which are provided to the accommodation part and which rotate in conjunction with the feeding of the paper while supporting the paper, wherein the first paper roller is disposed at a lower position in the gravitational direction as compared with the second paper roller, and the first paper roller has an axis line that is inclined in the gravitational direction with respect to the axis line of the second paper roller, whereby one of the surfaces of the paper facing the reference surface is allowed to come into abutment with the reference surface.

Description

Printer

The present invention relates to a printer.

In recent years, printers using roll paper have been used to print receipts issued when purchasing goods at stores and the like. In particular, for ease of handling, a printer using a method of loading roll paper into a paper storage unit (drop-in method) has become widespread as a method of setting roll paper in the printer.

In a roll-in printer of the drop-in method, when the roll paper has a large remaining amount, the roll paper may rotate more than necessary due to inertial force when intermittently transporting the roll paper, causing slack in the roll paper. is there. The slack of the roll paper causes a print jam and a misalignment of the print position due to the paper being fed obliquely (skew).

Therefore, as a printer that prevents the slack when the roll paper is conveyed, a roll paper printer that presses a roll paper having a predetermined diameter or less toward the bottom surface of the roll paper storage unit has been reported (for example, , Patent Document 1).

However, the printer described in Patent Document 1 needs to be provided with a roll paper holding portion for pressing the roll paper, which causes a problem that the mechanism becomes complicated. Even if the skew caused by the looseness of the roll paper is improved, the skew caused by the axial movement of the roll paper itself due to the vibration accompanying the operation of the printer cannot be improved. was there.

Japanese Patent No. 6358691

An object of the present invention is to provide a printer capable of suppressing skew of roll paper.

A printer according to an embodiment of the present disclosure includes a storage unit that stores a roll of paper, a reference surface that is arranged on one side in the axial direction of the roll-shaped paper of the storage unit, and a printing unit that prints on the paper. A transport unit that transports the paper from the storage unit to the printing unit, and a first paper roller and a second paper roller that are installed in the storage unit and that rotate with the transport of the paper while supporting the paper. The first paper roller is arranged at a position lower than the second paper roller in the direction of gravity, and the axis of the first paper roller is inclined in the direction of gravity with respect to the axis of the second paper roller. As a result, one side of the paper facing the reference surface is in contact with the reference surface.

The axis of the first paper roller is preferably tilted by 0.1 to 2 degrees with respect to the axis of the second paper roller.

More preferably, the axis of the first paper roller is inclined by 0.2 to 0.5 degrees with respect to the axis of the second paper roller.

It is more preferable that the axis of the first paper roller is inclined by 0.25 degrees with respect to the axis of the second paper roller.

The storage section further includes a partition plate arranged on a side surface orthogonal to the axial direction of the roll-shaped paper, and the partition plate is slidable in the width direction of the paper and to the reference surface with respect to the paper. You may make it have an urging member for urging|biasing in the direction to press.

The first paper roller is preferably in contact with the storage section.

The portion of the storage unit that contacts the first paper roller has a predetermined angle at which the axis of the first paper roller inclines with respect to the axis of the second paper roller by contacting the first paper roller. It is preferable that it is formed as defined in 1.

According to the printer according to the embodiment of the present disclosure, skewing of the roll paper can be suppressed.

FIG. 3 is a perspective view of the printer according to the first embodiment of the present disclosure, and is a diagram illustrating a state in which an upper case is opened and paper is not stored. FIG. 3 is a perspective view of the printer according to the first embodiment of the present disclosure, and is a diagram illustrating a state where sheets are stored with the upper case opened. FIG. 3 is a top view of the printer according to the first embodiment of the present disclosure. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, showing a cross-sectional view of the printer when the diameter of the paper is larger than a predetermined diameter. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, showing a cross-sectional view of the printer when the diameter of the paper is smaller than a predetermined diameter. FIG. 3 is a perspective view of a lower case of the printer according to the first embodiment of the present disclosure, and is a diagram showing a state where the lower case and the paper holder are separated. FIG. 3 is a perspective view of a lower case of the printer according to the first embodiment of the present disclosure, and is a diagram showing a state where a paper holder is incorporated in the lower case. It is a top view of the lower case of the printer which concerns on Example 1 of this disclosure, and is the figure which shows the state which incorporated the paper holder in the lower case. FIG. 9 is a cross-sectional view of the lower case and the paper holder taken along the line BB of FIG. 8. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 8 and is a diagram showing a positional relationship between the paper and the first paper roller and the second paper roller. It is an enlarged view of the area|region shown by C and D of FIG. It is a perspective view of the paper holder and the partition plate of the printer which concerns on Example 1 of this disclosure, and is the figure which includes the assembly exploded view of the 1st paper roller. It is an enlarged view of the area|region shown by E of FIG. It is a perspective view of the printer which concerns on Example 2 of this disclosure, and is the figure which shows the state which the upper case is opened, and the paper is not stored. It is a perspective view of the paper holder and the partition plate of the printer which concerns on Example 2 of this disclosure. FIG. 8 is a perspective view showing a state where a partition plate and a biasing member of the printer according to the second embodiment of the present disclosure are separated. It is a top view of the paper holder and the partition plate of the printer which concerns on Example 3 of this disclosure. FIG. 7A is a top view of the lower case of the printer according to the third embodiment of the present disclosure, FIG. 7A is a diagram showing the position of the partition plate when the width of the paper that can be stored in the storage portion is maximized, and FIG. FIG. 6 is a diagram showing the position of a partition plate when the width of the paper that can be stored in the storage unit is minimized. FIG. 5 is a perspective sectional view taken along line CC of FIG. 17 of a partition plate having a paper holder and a partition plate position operation unit of the printer according to the third embodiment of the present disclosure, and is a diagram showing a structure of the partition plate position operation unit. FIG. 18 is a perspective cross-sectional view of the paper holder and the partition plate of the printer according to the third embodiment of the present disclosure taken along the line CC in FIG. 17, including an exploded view of the partition plate position operation unit. It is a perspective view of the back side of the paper holder of the printer which concerns on Example 3 of this disclosure.

The printer according to the present invention will be described below with reference to the drawings. However, it should be noted that the technical scope of the present invention is not limited to those embodiments and extends to the inventions described in the claims and their equivalents.

[Example 1]
First, the printer according to the first embodiment of the present disclosure will be described. 1 and 2 are perspective views of the printer 101 according to the first embodiment of the present disclosure. FIG. 1 shows a state in which the upper case 21 is open and paper is not stored. FIG. 2 shows a state in which the upper case 21 is opened and the paper 100 is stored. FIG. 3 shows a top view of the printer 101 according to the first embodiment of the present disclosure. 4 and 5 are sectional views taken along the line AA of FIG. 4 shows a cross-sectional view of the printer 101 when the diameter of the paper 100 is larger than a predetermined diameter, and FIG. 5 shows a cross-sectional view of the printer 101 when the diameter of the paper 100 is smaller than the predetermined diameter.

As shown in FIGS. 1, 2, 4, and 5, the printer 101 includes a storage unit 1, a reference surface 2, a printing unit (thermal head 3), a transport unit (platen roller 4), and a first paper roller. 51 and a second paper roller 52.

As shown in FIGS. 4 and 5, the printer 101 is a thermal printer, and applies the thermal head 3, which is a heated print head, to the paper 100, which is a special paper (heat-sensitive paper) whose color changes when heat is applied. It is a printer that uses a heat-sensitive method for printing by printing. Paper 100 is a strip-shaped continuous paper rolled in a roll shape.

As shown in FIGS. 1 and 2, the printer 101 includes an upper case 21 and a lower case 22 provided with a thermal head 3. The upper case 21 covers the upper part of the lower case 22 and is openably and closably supported on the upper part of the lower case 22. When the open/close button 8 provided on the upper case 21 is pressed, the upper case 21 rotates upward with respect to the lower case 22 about the rotation shaft 23 as shown in FIGS. 1 and 2. Then open. The printer 101 executes printing on the paper 100 with the upper case 21 closed.

As shown in Fig. 2, the storage unit stores the paper wound in a roll. As shown by the broken line in FIG. 1, the storage section 1 is composed of the sheet holder 10 and the partition plate 6 arranged in the lower case 22, and the reference surface 2 of the lower case 22.

As shown in FIGS. 1 and 2, the reference surface 2 is arranged on one side of the roll-shaped paper 100 in the storage unit 1 in the axial direction. As shown in FIG. 1, a partition plate 6 is arranged on the other side of the roll-shaped paper in the storage portion 1 in the axial direction. That is, the reference surface 2 shown in FIGS. 1 and 2 is arranged on one side surface 100a side of the sheet 100, and the partition plate 6 shown in FIG. 1 is arranged on the other side surface 100b side of the sheet 100. ..

As shown in FIGS. 4 and 5, the thermal head 3 can be used in the printing unit that prints on the paper 100. As shown in FIGS. 4 and 5, the thermal head 3 is arranged at a position facing the platen roller 4 with the upper case 21 closed. The paper 100 is sandwiched between the thermal head 3 and the platen roller 4. The thermal head 3 is pressed toward the platen roller 4 by the spring 3a. The thermal head 3 is controlled by the control unit 30 to cause a built-in heating element to generate heat in accordance with image data or print data to be printed, and print an image or characters on the paper 100 which is a thermal paper.

As shown in FIGS. 4 and 5, the transport unit transports the sheet 100 from the storage unit to the thermal head 3, which is the printing unit. The transport unit includes the platen roller 4, a drive motor (not shown), a gear, and the like. The paper 100 is conveyed via the paper damper 42 by rotating the platen roller 4 while being sandwiched between the thermal head 3 and the platen roller 4. Rotational force is transmitted from the drive motor to the platen roller 4 via a transmission mechanism such as a gear. After printing on the paper 100 by the thermal head 3, the paper 100 is cut by the paper cutting portion 41 at the rear end of the area to be printed and discharged from the paper ejection port 40. The paper cutting portion 41 includes a fixed blade 41a arranged in the upper case 21 and a movable blade 41b arranged between the platen roller 4 and the paper ejection port 40 in the lower case 22 so as to face the fixed blade 41a. ..

FIG. 6 is a perspective view of the lower case 22 of the printer according to the first embodiment of the present disclosure, showing a state in which the lower case 22 and the paper holder 10 are separated. The first paper roller 51 and the second paper roller 52 rotate as the paper 100 is conveyed while supporting the paper 100. Specifically, the first paper roller 51 and the second paper roller 52 are installed in the paper holder 10 that stores the paper 100. As shown in FIG. 4, the first paper roller 51 is arranged at a position lower in the gravity direction than the second paper roller 52. As a result, when the paper 100 is in contact with the first paper roller 51 and the second paper roller 52, the load of the paper 100 applied to the first paper roller 51 is larger than the load applied to the second paper roller 52. Will also grow. On the other hand, as shown in FIG. 5, when the diameter of the paper 100 is reduced, the paper 100 is supported by the bottom surface portion 12 of the paper holder 10 and the second paper roller 52.

FIG. 7 is a perspective view of the lower case 22 of the printer according to the first embodiment of the present disclosure, showing a state in which the paper holder 10 is incorporated in the lower case 22. FIG. 8 is a top view of the lower case 22 of the printer according to the first embodiment of the present disclosure, showing a state in which the paper holder 10 is incorporated in the lower case 22. FIG. 9 shows a sectional view of the lower case 22 and the paper holder 10 taken along the line BB of FIG. FIG. 10 is a cross-sectional view taken along the line BB of FIG. 8 and shows the positional relationship between the paper 100 and the first paper roller 51 and the second paper roller 52. FIG. 11 shows an enlarged view of the region shown by C and D in FIG.

As shown in FIG. 10, the axis L1 of the first paper roller 51 is inclined in the gravity direction with respect to the axis L2 of the second paper roller 52, and thus faces the reference surface 2b of the paper 100. One side surface 100a contacts the reference surface 2b. As shown in FIG. 7, the reference surface is, for example, from the reference surface (2a, 2b, 2c) formed on each of the three convex portions (20a, 20b, 20c) provided on the side wall 13 of the lower case 22. It may be. However, the present invention is not limited to such an example, and the number of convex portions may be two or less or four or more, and the side surface of the side wall 13 on the sheet side may be used as the reference surface without forming the convex portions.

As shown in FIG. 10, the load of the paper 100 is applied to the first paper roller 51 more than that of the second paper roller 52. In this state, since the reference surface 2b side of the first paper roller 51 is inclined so as to be lower than the partition plate side, the paper 100 is also inclined similarly to the first paper roller 51. That is, the axis L0 of the paper 100 is parallel to the axis L1 of the first paper roller 51 and is inclined with respect to the axis L2 of the second paper roller 52. As a result, the paper 100 slides toward the reference surface 2b, and the side surface 100a on the reference surface 2b side comes into contact with the reference surface 2b. When the side surface 100a of the paper 100 comes into contact with the reference surface 2b, a frictional force is generated between the side surface 100a of the paper 100 and the reference surface 2b. This frictional force reduces the inertial force generated when the paper 100 is conveyed. Further, since the paper 100 is arranged closer to the reference surface 2b due to gravity, the paper 100 is suppressed from moving toward the partition plate side against the gravity. As a result, it is possible to suppress the slack and skew of the paper 100 that occur when the paper 100 is conveyed.

Next, a mechanism for providing an inclination to the first paper roller 51 will be described. As shown in FIG. 11, the first paper roller 51 is rotatably supported by the paper holder 10 via the paper roller holder 11. One end 51 a of the first paper roller 51 on the partition plate 6 side is rotatably supported in the hole 10 a of the paper holder 10. The other end 51b of the first paper roller 51 on the side of the reference surface 2b is rotatably supported at a position lower than the one end 51a in the gravity direction via the paper roller holder 11. In this way, as shown in FIG. 10, the axis L1 of the first paper roller 51 is inclined with respect to the axis L2 of the second paper roller 52 by a predetermined angle in the gravity direction.

As shown in FIG. 10, the axis L1 of the first paper roller 51 is preferably inclined by 0.1 to 2 degrees with respect to the axis L2 of the second paper roller 52. Further, it is more preferable that the axis L1 of the first paper roller 51 is inclined by 0.2 to 0.5 degrees with respect to the axis L2 of the second paper roller 52. Further, it is more preferable that the axis L1 of the first paper roller 51 is inclined by 0.25 degrees with respect to the axis L2 of the second paper roller 52. By the printer according to the first embodiment of the present disclosure, the axis L1 of the first paper roller 51 is inclined by 0.25 degrees with respect to the axis L2 of the second paper roller 52, so that The skew amount could be reduced by 92% as compared with the case where the axis L1 was not tilted.

FIG. 12 is a perspective view of the sheet holder 10 and the partition plate 6 of the printer according to the first embodiment of the present disclosure, including a diagram including an exploded view of the first sheet roller 51. FIG. 13 shows an enlarged view of the area indicated by E in FIG. As shown in FIG. 13, the paper roller holder 11 is fixed to the paper holder 10 by inserting a holder screw 11a through the hole 11c. The paper roller holder 11 is provided with a long hole 11b that is long in the direction of gravity, and the paper roller screw 9 allows the end portion 51b of the first paper roller 51 penetrating the long hole 11b to be freely rotated by the paper roller holder 11. Can be attached to. The end portion 51b is movable in the vertical direction in the elongated hole 11b in a state where the end portion 51b is inserted into the elongated hole 11b and attached. The paper roller screw 9 is not fixed to the paper roller holder 11. Therefore, the first paper roller 51 contacts the storage unit 1. Specifically, the other end portion 51c of the first paper roller 51 comes into contact with a part 10b of the paper holder 10 constituting the storage portion 1 within the movable range of the elongated hole 11b. That is, the part 10b where the storage portion 1 is in contact with the first paper roller 51 comes into contact with the first paper roller 51 so that the axis of the first paper roller 51 becomes the axis of the second paper roller 52. It is formed so as to define the angle of inclination with respect to a predetermined angle. Further, since the first paper roller 51 is in contact with the part 10b of the paper holder 10, a frictional force is generated between the first paper roller 51 and the paper holder 10, and the inertial force when the paper 100 is conveyed is reduced. This makes it possible to further suppress slack and skew during transportation of the paper 100. The first paper roller 51 may be in contact with the paper holder 10 at a position other than the part 10b of the paper holder 10.

As described above, according to the printer according to the first embodiment of the present disclosure, skewing of the roll paper can be suppressed.

[Example 2]
Next, a printer according to the second embodiment of the present disclosure will be described. FIG. 14 is a perspective view of the printer 102 according to the second embodiment of the present disclosure, showing a state in which the upper case 21 is open and paper is not stored. FIG. 15 is a perspective view of the paper holder 10 and the partition plate 6 of the printer according to the second embodiment of the present disclosure. FIG. 16 is a perspective view showing a state where the partition plate 6 and the biasing member 7 of the printer according to the second embodiment of the present disclosure are separated. The printer according to the second embodiment is different from the printer according to the first embodiment in that the storage unit 1 further includes a partition plate 6 arranged on a side surface orthogonal to the axial direction of the roll-shaped paper, and the partition plate is provided. The point is that it is slidable in the width direction of the sheet and has an urging member 7 for urging the sheet in the direction of pressing it against the reference surface 2. The other configurations of the printer 102 according to the second embodiment are the same as the configurations of the printer 101 according to the first embodiment, and thus detailed description thereof will be omitted.

As shown in FIG. 15, in the paper holder 10 that constitutes the storage unit 1, a first guide shaft 161 and a second guide shaft 162 are arranged in parallel with the second paper roller 52. A first boss 141 and a second boss 141 and a second side having through holes for passing the first guide shaft 161 and the second guide shaft 162, respectively, on the side surface of the partition plate 6 on the side on which the paper is arranged. The boss 142 is provided. The partition plate 6 is slidable in the width direction of the paper along the first guide shaft 161 and the second guide shaft 162. The second paper roller 52 is rotatably fixed to the second paper roller holder 11d by the second paper roller screw 9a, and the second paper roller holder 11d is rotatably fixed to the second paper roller holder 11d by the second holder screw 11e. It is fixed at 10.

As shown in FIG. 16, the partition plate 6 has a protruding portion 6e protruding in the axial direction of the paper. A locking portion 6g is provided at the end of the protrusion 6e. As will be described later, the locking portion 6g fits into the opening 18b (see FIG. 21) of the paper holder 10. The protrusion 6e is provided with an opening 6f. As will be described later, the partition position operation unit 15 (see FIG. 20) is fitted into the opening 6f. Further, the partition plate 6 has an urging member 7 for urging the sheet in the direction of pressing it against the reference surface 2 (see FIG. 14). The biasing member 7 includes a biasing member main body 7a, a spring 7b, and a screw 7e. The spring 7b is housed in the hole 6b provided in the partition plate 6, and the biasing member main body 7a is arranged so as to be fitted into the groove 6a of the partition plate 6 via the spring 7b. A hook-shaped first locking portion 7c and a second locking portion 7d are provided at both ends of the biasing member main body 7a. The first locking portion 7c and the second locking portion 7d are inserted into the first opening portion 6c and the second opening portion 6d provided at both ends of the groove 6a, respectively, and the biasing member main body 7a is fixed by the screw 7e. It is locked so as not to fall out from the groove 6a. The spring 7b allows the biasing member main body 7a to contact the paper and press the biasing member main body 7a toward the paper. As shown in FIG. 14, when the biasing member 7 pushes the side surface of the sheet, the side surface on the reference surface 2 side of the sheet contacts the reference surface 2. As a result, a frictional force is generated between the paper and the reference surface 2, and the inertial force generated when the paper is conveyed can be suppressed, so that the paper is prevented from being loosened by exceeding the desired amount. be able to. Further, it is possible to prevent the side surface on the reference surface 2 side from moving to the partition plate 6 side apart from the reference surface 2. Further, the urging member main body 7a has a structure extending in the vertical direction. Therefore, even when the diameter of the paper becomes smaller than the predetermined diameter, the biasing member main body 7a can contact the side surface of the paper on the partition plate 6 side. As a result, it is possible to suppress loosening and skewing of the paper that occur during paper transportation.

The second boss 142 contacts the back surface of the paper when the paper becomes smaller than a predetermined diameter. When the second boss 142 comes into contact with the paper, vibration of the paper can be suppressed, and as a result, skewing and printing clogging can be suppressed. Further, by passing the second guide shaft 162 through the through hole provided in the second boss 142, the partition plate 6 becomes slidable in the width direction of the paper along the second guide shaft 162. ing. In this way, the second boss 142 can also serve as a guide for the partition plate 6. When the paper becomes smaller than the predetermined diameter, the paper is not placed on the first paper roller 51 and the second paper roller 52, and the bottom surface portion 12 of the paper holder 10 and the paper holder 10 are not placed. Touch the front directly.

As shown in FIG. 15, it is preferable that the paper holder 10 has a paper guide portion 19 that comes into contact with the paper when the diameter of the paper becomes smaller than a predetermined diameter. Since the paper guide portion 19 supports the back surface of the paper on the reference surface 2 side, the paper can be conveyed more smoothly together with the second boss 142, and the vibration of the paper can be suppressed. As a result, It is possible to suppress the occurrence of skew feeding and print clogging.

[Example 3]
Next, a printer according to the third embodiment of the present disclosure will be described. FIG. 17 shows a top view of the paper holder 10 and the partition plate 6 of the printer according to the third embodiment of the present disclosure. The printer according to the third embodiment is different from the printer according to the first embodiment in that the partition plate 6 has a partition position operation unit 15 for fixing the partition plate 6 at an arbitrary position within a slidable range. It is a point to have. Since the other configurations of the printer according to the third embodiment are the same as the configurations in the printer according to the first embodiment, detailed description thereof will be omitted.

18A and 18B are top views of the lower case 22 of the printer according to the third embodiment of the present disclosure. The sheet can be stored in the storage section 1 formed between the reference surface 2 and the biasing member 7 of the partition plate 6. 18A shows the position of the partition plate 6 when the width of the paper that can be stored in the storage unit 1 is maximized, and FIG. 18B shows the position where the paper that can be stored in the storage unit 1 is minimum. The position of the partition plate 6 in the case is shown. The partition position operation unit 15 can fix the partition plate 6 at an arbitrary position within a slidable range. FIG. 18A shows an arrangement example of the partition plate 6 when the paper width d ₁ is the maximum paper width that can be stored in the storage unit 1. As an example in which the paper width is maximized, the paper width d ₁ can be set to 4 inches. However, the present invention is not limited to such an example, and the position of the partition plate 6 may be set so that the paper width is larger than 4 inches. FIG. 18B shows an arrangement example of the partition plate 6 when the paper width d ₂ is the minimum paper width that can be stored in the storage unit 1. As an example in which the paper width is minimized, the paper width d ₂ can be set to 2 inches. However, the present invention is not limited to such an example, and the total value of the width of the paper guide portion 19 and the width of the second boss 142 may be set so that the paper width is smaller than 2 inches. By operating the partition position operating unit 15, the side surface of the sheet on the side of the partition plate 6 is brought into contact with the urging member 7 for a sheet having an arbitrary width within the range of d ₁ to d _2. be able to. Therefore, the paper is in contact with the reference surface 2, and the inertial force generated during the conveyance of the paper can be suppressed by the frictional force generated between the paper and the reference surface 2, and the paper is prevented from moving to the partition plate 6 side. Therefore, it is possible to suppress the slack when the paper is conveyed, and to suppress the skew of the paper.

FIG. 19 is a perspective cross-sectional view taken along line CC in FIG. 17 of the partition plate 6 having the paper holder 10 and the partition plate position operation unit 15 of the printer according to the third embodiment of the present disclosure. FIG. 20 is a perspective sectional view taken along line CC of FIG. 17 of the paper holder 10 and the partition plate 6 of the printer according to the third embodiment of the present disclosure, including an exploded view of the partition plate position operation unit 15. Is shown. FIG. 21 is a perspective view of the back side of the paper holder 10 of the printer according to the third embodiment of the present disclosure.
As shown in FIG. 19, the partition plate 6 is made of paper along the first guide shaft 161 and the second guide shaft 162 passed through the through holes provided in the first boss 141 and the second boss 142. It is slidable in the axial direction of. However, it is preferable to fix the partition plate 6 at a predetermined position on the paper holder 10 in accordance with the width of the paper. Therefore, a partition plate position operation unit 15 for fixing the position of the partition plate 6 to a predetermined position is provided between the paper holder 10 and the support unit 17. The support portion 17 is fixed to the

columns

18c and 18d of the paper holder 10 by

screws

17a and 17b, respectively.
As shown in FIG. 20, the partition plate position operation part 15 is composed of a button 15a, a spring 15b, a spring support part 15c, and a stopper part 15d. The spring support portion 15c contacts the support portion 17 and supports the spring 15b. The spring 15b urges the button 15a vertically upward. The button 15a fits into the opening 6f provided in the protruding portion 6e of the partition plate 6. A stopper portion 15d is formed on the button 15a.

As shown in FIG. 21, a groove arranging portion 18 having a plurality of grooves 18a and openings 18b is provided on the back surface of the paper holder 10. As shown in FIG. 19, the buttons 15a and the protrusions 6e constituting the partition plate position operation portion 15 are exposed on the surface side of the paper holder 10 via the opening 18b. As shown in FIG. 20, the button 15a is provided with a stopper portion 15d so as to face the groove arranging portion 18, and the position of the partition plate 6 is determined by fitting the stopper portion 15d into the groove 18a. Can be fixed (locked) in position. On the other hand, by pushing the button 15a constituting the partition plate position operation portion 15 vertically downward, the spring 15b contracts, the button 15a and the button support portion 15e move vertically downward, and the stopper portion 15d separates from the groove 18a. (Unlock), and in that state, the partition plate 6 can be slid along the guide shafts (161 and 162). After moving the partition plate 6 to a desired position, when the finger or the like pressing the button 15a is released, the spring 15b expands to the original position and the button 15a is returned to the original position, so that the stopper portion 15d is again formed in the groove 18a. Can be fitted and the partition plate 6 can be fixed (locked) at a desired position.

As shown in FIG. 17, the paper holder 10 may have a scale 60 for determining the position of the partition plate 6 according to the width of the paper to be loaded. By providing the scale 60 with a scale that matches the width of the paper, the partition plate 6 can be moved to a position that matches the width of the paper based on the scale.

In the above embodiment, the case where the thermal type is adopted as the printing method of the printer has been described as an example, but the present invention is not limited to such an example. As long as it uses roll paper, it may be, for example, an inkjet printer, an electrophotographic printer, a dot impact printer, a sublimation printer, or the like.

Claims

A storage unit that stores the paper wound in a roll,
A reference surface arranged on one side in the axial direction of the roll-shaped paper of the storage section,
A printing unit that prints on paper,
A transport unit that transports a sheet from the storage unit to the printing unit,
A first paper roller and a second paper roller that are installed in the storage unit and that rotate with the transportation of the paper while supporting the paper;
The first paper roller is arranged at a position lower in the gravity direction than the second paper roller.
The axis of the first paper roller is inclined in the direction of gravity with respect to the axis of the second paper roller, so that one surface of the paper facing the reference surface contacts the reference surface. Touch,
A printer characterized by that.
The printer according to claim 1, wherein the axis of the first paper roller is inclined by 0.1 to 2 degrees with respect to the axis of the second paper roller.
The printer according to claim 1, wherein the axis of the first paper roller is inclined by 0.2 to 0.5 degrees with respect to the axis of the second paper roller.
The printer according to claim 1, wherein the axis of the first paper roller is inclined by 0.25 degrees with respect to the axis of the second paper roller.
The storage portion further includes a partition plate arranged on a side surface orthogonal to the axial direction of the roll-shaped paper.
The partition plate,
It can slide in the width direction of the paper, and
A urging member for urging the sheet in the direction of pressing it against the reference surface;
The printer according to any one of claims 1 to 4.
The printer according to any one of claims 1 to 5, wherein the first paper roller is in contact with the storage section.
The portion of the storage unit that is in contact with the first paper roller has an angle at which the axis of the first paper roller is inclined with respect to the axis of the second paper roller by contacting the first paper roller. 7. The printer according to claim 6, wherein the printer is formed so as to define a predetermined angle.