JP6438383B2 - Media printer - Google Patents

Description

  The present invention relates to a media printer, and more particularly to a media printer having a movable roller guide mechanism.

  The passbook printer inhales the set passbook and performs dot printing on the passbook. Recent passbook printers have a width-shifting function for width-shifting the passbook, and if the passbook is inserted out of the normal direction, the corner of the passbook hits against the abdomen of the roller when set. It was. Conventionally, as a countermeasure against curling of the corner of the bankbook (fixed guide system), and without using the fixed guide, when the medium detection sensor detects the bankbook, the pinch roller is controlled to rotate in the suction direction. There is a method (control method) for preventing corner curling.

As prior art documents related to a passbook printer, for example, there are the following patent documents 1 and 2.
In Patent Document 1, in order to prevent the surface of the medium from being contaminated or damaged by the gap holding member, the gap adjustment and the printing operation can be performed at the same time, and the thickness of the medium changes. In order to cope with this, a recording apparatus having a roller guide as a guide portion, a platen, and a guide roller as a gap holding member has been proposed. Further, in Patent Document 2, when the medium is brought close to the reference axis, the end of the medium does not collide with the side surface of the feed roller. It has been proposed to provide a frustoconical roller guide that is coaxial with the feed roller and that can idle.

JP 2005-66874 A JP 2009-202956 A

  The fixed guide method as a countermeasure against defective setting is a method in which a fixed guide is placed on the conveying roller, and has a structure that prevents corner portions of the print medium from hitting the conveying roller during setting. Thereby, it is possible to effectively prevent the corners of the print medium from curling when the print medium is set, and it is possible to prevent slip marks from adhering to the corners of the print medium.

  However, in the fixed guide method, since the transport roller is covered with the fixed roller guide, a space where the print medium transported through the transport path and the transport roller are in contact with each other is set narrow. For this reason, when ink stains or the like proceed, there is a problem that a step of the binding portion of the print medium is caught on the fixed guide or a slip mark is attached when the print medium is carried on the conveyance path.

  On the other hand, the control method is effective as a countermeasure against slip marks during conveyance, but at the time of setting, there is a possibility that slip marks may adhere between the time when the medium detection sensor detects the print medium and the roller stops. It was.

  Therefore, the present invention prevents the print medium from curling when the print medium is set and causing a set failure, and prevents the slip marks from sticking when the print medium is carried on the binding portion. It is an object of the present invention to provide a media printer provided with a roller guide mechanism.

The medium printer of the present invention includes a conveyance path for conveying a first print medium in which a plurality of printable media are bound, a first drive roller for driving and conveying the first print medium on the conveyance path, A printing unit for printing on the first printing medium, and the first driving roller for preventing the leading end of the first printing medium from being bent and set on the first driving roller. a medium printer and a movable roller guide movable in the thickness direction of the first print medium independently of the movable roller guide, when the first set of print media The first print medium is fixed at a position where the first print medium can be guided without contacting the tip of the first print medium anywhere on the outer peripheral surface of the first drive roller. during transport, the said first print medium first As it can be conveyed by the driving roller, characterized in that movable in the thickness direction of the first print medium in accordance with the thickness of the first print medium.

  The medium printer according to the present invention prevents a print medium from curling when the print medium is set and causes a set failure, and prevents a slip mark from being attached when the print medium is carried on a bound portion. A printer can be provided.

1 is a diagram illustrating a schematic cross-sectional structure of a medium printer according to an embodiment of the present invention. It is a perspective view explaining the structure of the inserter unit in FIG. It is a perspective view explaining the structure of the conventional inserter unit without a roller guide. It is a figure explaining the subject at the time of the printing medium setting of the inserter unit of FIG. It is a perspective view explaining the structure of the conventional fixed roller guide type inserter unit. It is a figure explaining operation | movement of the conventional fixed roller guide type inserter unit. It is a figure explaining operation | movement of the inserter unit in the media printer of embodiment of this invention. It is a figure explaining the roller load reduction at the time of width alignment in the media printer of embodiment of this invention. It is a figure explaining the roller load reduction at the time of width shape and the shape of a movable roller guide.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Configuration of the embodiment)
FIG. 1 is a diagram illustrating a schematic cross-sectional structure of a medium printer according to an embodiment of the present invention. In FIG. 1, in order to facilitate understanding of the overall structure, a movable roller guide (to be described later) that covers the first drive roller when the first print medium is set is drawn.

  The medium printer 1 carries in / out the passbook 2 as a first print medium inserted from the passbook insertion / discharge port 12 to / from the printing unit 33 and as a second print medium inserted from the slip insertion / discharge port 18. The inserter unit 10 carries in and out the slip (not shown) to and from the printing unit 33, and the printer unit 30 includes the printing unit 33 that prints the passbook 2 and the slip. The passbook 2 as the first print medium is configured by binding a plurality of printable media, and has a binding portion that is thicker than the other portions. The slip as the second print medium is composed of a printable sheet or booklet medium.

  The inserter unit 10 includes a movable roller guide mechanism 11 which is a main part of the present invention. The movable roller guide mechanism 11 has a function of sucking / unloading the bankbook to / from the printer unit 30.

  The movable roller guide mechanism 11 includes a passbook insertion / discharge port 12 for inserting / extracting the passbook 2 for printing, a conveyance path 13 for sucking / extracting the passbook to the printer unit 30, and a passbook 2 set on the conveyance path 13. , A width adjusting pinch roller 14 </ b> A that rotates in accordance with the width adjustment of the bankbook 2, and a bankbook set on the conveyance path 13. The first drive roller 15 that conveys the paper 2 along the conveyance path 13, the pinch roller 15 </ b> A that rotates along with the passbook 2 that is conveyed by the rotation of the first drive roller 15, and positioning when the passbook 2 is set And a stopper 17 to be performed. The circumferential surface of the width adjusting roller 14 is made of a material having a large friction coefficient with the passbook 2 to be width adjusted, for example, synthetic rubber. The circumferential surface of the width adjusting pinch roller 14A, which rotates as the passbook is adjusted by the rotation of the width adjusting roller 14, is made of a material having a smaller friction coefficient than the surface on the circumference of the width adjusting roller 14, for example, Molded with plastic resin.

  Behind the width adjusting roller 14 and the width adjusting pinch roller 14A on the conveyance path 13 are the first driving roller 15 that sucks / discharges the bankbook 2 toward the printer unit 30, and the rotation of the first driving roller 15. A pinch roller 15 </ b> A that rotates with it is disposed.

  A stopper 17 for positioning the bankbook 2 at the time of setting is provided in the back of the first drive roller 15 and the pinch roller 15A on the conveyance path 13. A medium detection sensor (not shown) that detects that the bankbook 2 is set at the position of the stopper 17 is provided in front of the stopper 17 on the conveyance path 13.

  The inserter unit 10 further narrows the slip insertion / discharge port 18 for inserting / discharging a slip to be printed, a transport path 19 for sucking / sending the slip to the printer unit 30, and a slip being transported through the transport path 19. The width adjusting roller 20, the width adjusting pinch roller 20 </ b> A that rotates in accordance with the width adjustment of the slip when the width of the slip being transported by the width adjusting roller 20, and the inserted slip are transported along the transport path 19. A second driving roller 21, a pinch roller 21 </ b> A that rotates with the rotation of the second driving roller 21 to convey a slip, and a stopper 22 that performs positioning when the slip is set.

  In front of the stopper 22 on the conveyance path 19, there is provided a medium detection sensor (not shown) that detects that the passbook 2 is set at the position of the stopper 22.

  The printer unit 30 includes a conveyance path 31 that sucks / discharges the passbook conveyed from the conveyance path 13 and the slip conveyed from the conveyance path 19 into the printer unit 30. The printer unit 30 includes a printing unit 33 that prints transaction data or the like on a passbook or slip as a printing medium. The printing unit 33 includes a ribbon 33a, a print head 33b, and a platen 33c. The printing unit 33 performs printing on the printing surface of the printing medium by sandwiching and pressing the ribbon 33a and the printing medium between the printing head 33b and the platen 33c.

A third drive roller 32 and a pinch roller 32 </ b> A that guide the bankbook 2 and the slip to the printing unit 33 are provided in the conveyance path 31 that sandwiches the printing unit 33. A fourth driving roller 34 and a pinch roller 34 </ b> A for guiding the bankbook 2 to the page turning roller 35 are provided in the back of the printing unit 33 on the conveyance path 31. A page turning roller 35 for turning pages of the bankbook 2 and a pinch roller 35A paired with the page turning roller 35 are provided at the further back of the conveyance path 31. Further behind the page turning roller 35, a fifth drive roller 36 having a function of carrying out the bankbook 2 and the slip along the conveyance path 31 and a pinch roller 36A paired with the fifth drive roller 36 are provided. ing.

  The printer unit 30 is covered with a printer unit cover 37. The printer unit cover 37 is configured to open and close around a fulcrum 38 when the cover is open. For example, the printer unit cover 37 is opened and closed when the ribbon 33a is replaced.

  2A to 2C are perspective views for explaining the structure of the inserter unit in FIG. 2A to 2C, the slip insertion / discharge port 18, the conveyance path 19, the width adjusting pinch roller 20A, the pinch roller 21A, and the stopper 22 in FIG. It has been removed.

  When FIG. 2A of the perspective view of the inserter unit 10 viewed from above is viewed, the passbook 2 is inserted into the passbook insertion / discharge port 12 in front of the inserter unit 10. The bankbook 2 is inserted from the bankbook insertion / discharge port 12 and a medium detection sensor (not shown) provided at a position before the stopper 17 on the conveyance path 13 detects that the bankbook 2 is set. The movable roller guide 23 moves the first drive roller 15b so that the passbook 2 does not come into direct contact with the circumferential surface of the first drive roller 15b on the right side when the passbook 2 is moved rightward by the width adjusting roller 14. Covering.

Medium detection sensor (not shown), when the right end of the passbook 2 detects that you have the right end of the transport path 13, biassing the roller 14 remains stopped.

  When the bankbook 2 is set normally, the first drive roller 15 (15b, 15c) rotates to convey the bankbook 2 in the back direction.

  The width-adjusting roller 14 and the first drive roller 15 cooperate to guide the right back corner of the bankbook 2 to the movable roller guide 23. The movable roller guide 23 is rotatably provided at a position covering the first drive roller 15 around the rotation axis of the second drive roller 21.

  When FIG. 2B is a perspective view of the inserter unit 10 as seen from the bottom, the movable roller guide 23 is centered on the rotation shaft 21 b of the second drive roller 21 at a position covering the first drive roller 15. It is provided so as to be rotatable. When the passbook 2 is set in the medium printer 1 having the width adjusting function, the movable roller guide 23 prevents the corners of the passbook 2 from being curled. It is disposed only on the roller 15b.

  Further, FIG. 2C shows a perspective view of the movable roller guide 23. The shape of the movable roller guide 23 and its function and effect will be described later.

(Operation of the embodiment)
Regarding the operation in Embodiment 1 of the present invention, (I) the operation of the current media printer, (II) the operation of the media printer in the embodiment of the present invention, This will be explained separately.

(I) Operation of Current Media Printer First, the structure and operation without a roller guide will be described.

  FIG. 3 is a perspective view of a conventional inserter unit 10A without a roller guide as viewed from the bottom, and corresponds to FIG. 2 (b) showing the inserter unit 10 according to the embodiment of the present invention.

  The inserter unit 10A shown in FIG. 3 is not provided with the movable roller guide 23 disposed in the inserter unit 10 shown in FIG. The other structure is the same as that of the inserter unit 10 shown in FIG.

  Referring to FIG. 4 for explaining a problem when the print medium is set in the inserter unit 10 </ b> A in FIG. 3, the corner portion of the passbook 2 as the first print medium hits the first drive roller 15 and is curled. Thus, if the corner portion of the passbook 2 hits the first drive roller 15b and is curled, the passbook 2 cannot be set at the correct position when the leading end of the passbook 2 is originally inserted to the position where it hits the stopper 17.

Next, the structure and operation of the fixed roller guide system will be described.
FIG. 5 is a perspective view for explaining the structure of a conventional fixed roller guide type inserter unit, and corresponds to FIG. 2B showing the inserter unit 10 according to the embodiment of the present invention.

  The inserter unit 10B shown in FIG. 5 is provided with a fixed roller guide 23A in place of the movable roller guide 23 provided in the inserter unit 10 shown in FIG. The other structure is the same as that of the inserter unit 10 shown in FIG. The fixed roller guide 23 </ b> A shown in FIG. 5B has a structure that can be fitted directly to the first drive roller 15.

  6 (a) and 6 (b) are diagrams for explaining the operation of a conventional fixed roller guide type inserter unit. FIG. 6 (a) shows the first drive roller and passbook when the passbook is set. 6B is a diagram illustrating the positional relationship between the first driving roller and the bankbook 2 when the sheet is carried on the binding portion of the bankbook 2.

  6A, since the first drive roller 15 is covered with the fixed guide roller 23A, the leading portion of the bankbook 2 inserted from the right to the left (from the front to the back) is fixed. Without contacting the first drive roller 15 by the type guide roller 23A, it can be inserted to the correct position where it hits the stopper 17, and the bankbook 2 can be set at the correct position. When the medium detection sensor (not shown) detects that the bankbook 2 is set at the correct position, the stopper 17 moves downward, and the first drive roller 15 sandwiches the bankbook 2 from above and below together with the pinch roller 15A. The first driving roller 15 and the pinch roller 15A cooperate to convey the bankbook 2.

  When FIG.6 (b) is seen, a mode that the level | step difference of the binding part of the bankbook 2 hits the fixed roller guide 23A is represented. The pinch roller 15A is pressed downward according to the thickness of the passbook 2 when it is transported over the binding portion 13 of the passbook 2 and is designed so that the binding portion of the passbook 2 does not hit the fixed roller guide 23A. However, since the first driving roller 15 is covered with the fixed roller guide 23A, the space where the bankbook 2 and the first driving roller 15 are in contact with each other is narrow, and the first driving roller 15 has ink and When adhesion of dirt such as dust progresses, there is a risk of slipping at the step of the binding portion of the passbook 2 or inducing conveyance failure. If slip occurs at the step of the binding portion of the passbook 2, ink marks (slip marks) adhere to the passbook 2, leading to a decrease in print quality.

Next, the width adjusting operation in the conventional fixed roller guide method will be described.
A medium detection sensor (not shown) provided at a position before the stopper 17 on the conveyance path 13 detects that the bankbook 2 is set. When a medium detection sensor (not shown) detects that the right end of the bankbook 2 is shifted from the right end of the conveyance path 13 to the left side, the width adjusting roller 14 rotates counterclockwise and the bankbook 2 is adjusted to the right. At this time, in the conventional fixed roller guide system, the first drive roller 15b is slightly protruded from the fixed roller guide 23A (see FIG. 6A). There is a risk that the corner of the bankbook 2 may be bent or the bankbook 2 may be inclined due to contact with the protruding belly portion of the first driving roller 15 having a large coefficient.

  A medium according to an embodiment of the present invention that solves the problems when the medium is set in the conventional inserter unit 10A without a roller guide and the problems such as slip at the binding portion of the inserter unit 10B of the fixed roller guide system and the adhesion of slip marks. The operation of the printer will be described below.

(II) Operation of the Media Printer of the Embodiment of the Present Invention FIGS. 7A and 7B are diagrams for explaining the operation of the inserter unit 10 in the media printer of the embodiment of the present invention. FIG. 7A is a diagram showing a positional relationship between the first driving roller and the bankbook 2 when the bankbook is set, and FIG. 7B is a diagram illustrating the first driving roller when riding on and transporting the binding portion of the bankbook 2. FIG.

  7A, when the bankbook 2 is set, the movable roller guide 23 is pressed downward by a recovery spring (not shown). The movable roller guide 23 is pressed downward about the rotation axis of the second drive roller 21 and completely covers the outer periphery of the first drive roller 15, so that the bankbook 2 inserted from right to left is inserted. The passbook 2 can be set at a normal position where it contacts the stopper 17 without contacting the first drive roller 15.

  Referring to FIG. 7B, the movable roller guide 23 is pushed upward against the elastic force of the lower side of the recovery spring (not shown) around the central axis of the second drive roller 21, Avoid steps in the binding. Thereby, even when dirt such as ink or dust adheres to the first drive roller 15, the passbook 2 is reliably conveyed without slipping on the conveyance path 13 by the first drive roller 15 and the pinch roller 15A. , Slipping at the step of the binding portion of the passbook 2 eliminates the possibility of inducing a conveyance failure.

(III) Reducing the Load of the Alignment Roller in the Present Invention FIGS. 8A and 8B are diagrams for explaining the reduction of the roller load during the width alignment in the medium printer according to the embodiment of the present invention. (A) is the perspective view which looked at the inserter unit 10 from the top, FIG.8 (b) is sectional drawing of the inserter unit 10. FIG.

  Referring to FIG. 8A, the bankbook 2 (not shown) is inserted from the bankbook insertion / discharge port 12 (in the direction of arrow H), and the width adjusting roller 14 provided at the center portion extends in the insertion direction of the bankbook 2. On the other hand, by rotating in the direction of arrow J, the width is brought closer to the right side (passbook abutting reference surface side).

  As shown in FIG. 8B, the leading portion of the bankbook 2 is normally set in contact with the stopper 17. When the position of the bankbook 2 is detected by a medium detection sensor (not shown) and the position of the bankbook 2 is deviated from the right end, the movable roller guide is rotated by rotating the leaf spring 25 in the direction of the arrow K around the shaft 24. 23 is fixed, and the width adjusting roller 14 and the width adjusting pinch roller 14A rotate. As a result, the bankbook 2 is shifted to the right side (passbook abutting reference surface side) with respect to the insertion direction.

  9 (a) and 9 (b) are diagrams for explaining the shape of the movable roller guide and the reduction of the roller load at the time of width adjustment. FIG. 9 (a) shows the first drive roller 15b on the right side. FIG. 9B is a view of the first drive roller 15b of FIG. 9A viewed from the front.

As shown in FIG. 9A, the movable roller guide 23 rotates in the vertical direction as indicated by the arrow about the rotation axis of the second drive roller 21. When the bankbook 2 is set, the movable roller guide is pushed down around the rotation axis of the second drive roller 21 to cover the first drive roller 15b. Further, when the sheet is carried on the binding portion of the passbook 2, the movable roller guide 23 is pushed up by the step of the binding portion of the passbook 2 around the rotation axis of the second drive roller 21, and the first drive roller 15 b. Contact and transport.

  In FIG. 9B, when the F part and the G part surrounded by the alternate long and short dashed lines of the movable roller guide 23 provided so as to sandwich the first drive roller 15b are viewed, the F part is the G part. Than protruding. The intersection of the dimension of F part and G part is 0.3 mm, for example, F part protrudes from the 1st drive roller 15b, and G part is dented from the 1st drive roller 15b. The movable roller guide 23 is formed of, for example, plastic or the like, and the end surface of the F portion is smoother than the surface of the first drive roller 15b and has a small friction coefficient.

  When the bankbook 2 is shifted from the direction of the F portion to the direction of the G portion, the F portion at the lower left portion of the movable roller guide 23 protrudes from the first drive roller 15b, so that the surface friction coefficient is large. The passbook 2 can be widened by sliding the end face of the F portion having a small friction coefficient without contacting the first drive roller 15b. Thereby, the width alignment operation | movement of the bankbook 2 can be made easy.

(Effect of embodiment)
According to the medium printer having the movable roller guide mechanism of the embodiment of the present invention, when the passbook 2 is set, the first drive roller 15b is covered by the movable roller guide 23. The passbook 2 can be set at the correct position by inserting the leading end of the passbook 2 to the position where it hits the stopper 17 without contacting the abdomen of the drive roller 15b.

Further, the dimensions of the F and G parts of the movable roller guide 23 are the same as the F part on the upstream side (center side in the conveyance path width direction) of the width adjusting roller 14 and the abdominal part (outer peripheral surface) of the first drive roller 15b. The G portion that protrudes further and is downstream of the width adjusting roller 14 (outside in the conveyance path width direction) is recessed from the abdomen of the first conveyance roller 15b. Thereby, the position of the bankbook 2 at the time of setting is shifted from the end of the conveyance path 13, and when the width adjustment roller 14 performs the width alignment of the bankbook 2, the surface of the first drive roller 15b having a large friction coefficient on the surface is formed. Since the passbook 2 can be widened by sliding the end face of the F portion having a small friction coefficient without contact, the load of width widening can be reduced.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment described above, In the range which does not deviate from the summary of this invention, various structures or embodiment can be taken. it can.

DESCRIPTION OF SYMBOLS 1 Media printer 2 Passbook 10, 10A, 10B Inserter unit 11 Movable roller guide mechanism 12 Passbook insertion / discharge port 13, 19, 31 Transport path 14, 20 Width-adjusting rollers 15, 15b, 15c First drive rollers 15A, 21A , 32A, 34A, 35A, 36A Pinch rollers 17, 22 Stopper 18 Slip insertion / discharge port 21 Second driving roller 21b Rotating shaft 23 of second driving roller Movable roller guide 23A Fixed roller guide 24 Shaft 25 Plate spring 30 Printer unit 32 Third drive roller 33 Printing unit 33a Ribbon 33b Print head 33c Platen 34 Fourth drive roller 35 Page turning roller 36 Fifth drive roller 37 Printer unit cover 38 Support point when cover is opened

Claims (7)

A transport path for transporting a first print medium in which a plurality of printable media are bound;
A first drive roller for driving and conveying the first print medium on the conveyance path;
A printing unit for printing on the first printing medium;
The thickness of the first to prevent from being set in a state where the tip portion is bent in the first printing medium drive rollers, said first drive roller said first printing medium independently of the A media printer comprising a movable roller guide movable in a direction ,
The movable roller guide is
Wherein the time of setting of the first print medium, where the guide can position the first print medium without causing contact also the outer peripheral surface of the first said tip portion first driving roller of the printing medium Fixed to
Wherein at the time of conveyance of the first print medium, the first print medium so as to be transported by the first driving roller, the first print medium in accordance with the thickness of the first print medium A medium printer which is movable in a thickness direction. The movable roller guide is
A first guide piece provided adjacent to one end portion on the outer side of the rotation axis of the first drive roller, and is rotatable about an axis parallel to the rotation axis of the first drive roller. Having a first guide piece;
The first guide piece has a first position in which a lower end of the first guide piece protrudes downward from a lowermost portion of an outer peripheral surface of the first drive roller, and the lower end is the first drive roller. Between the second position moved upward from the lowermost part of the outer peripheral surface of the outer periphery of the outer periphery of the outer periphery of the shaft,
When the first print medium is set, the first guide piece is fixed at the first position;
When the first print medium is transported, the first guide piece moves up and down in the thickness direction of the first print medium according to the thickness of the transported first print medium. The media printer according to claim 1. The movable roller guide is
A second guide piece provided adjacent to the other outer end of the first drive roller in the rotation axis direction, with the axis parallel to the rotation axis of the first drive roller as the center; A second guide piece rotatable integrally with the first guide piece;
When the first guide piece is fixed at the first position, the lower end of the second guide piece is lower than the lowermost part of the outer peripheral surface of the first drive roller. The medium printer according to claim 2, wherein the medium printer is configured to be positioned above. The axis parallel to the rotation axis of the first drive roller is a rotation axis of a second drive roller that drives and conveys a second print medium of a type different from the first print medium . 4. The medium printer according to claim 3 , wherein the driving roller is positioned nearer to the downstream side of the conveying path in the conveying direction than the first driving roller . 5. The media printer further includes:
A width adjusting roller configured to reduce the width of the first print medium to the end of the conveyance path when the width of the conveyance path is wider than the width of the first print medium;
The one end portion of the first driving roller is an end portion located on the upstream side in the width adjusting direction by the width adjusting roller, and the other end portion of the first driving roller is a width by the width adjusting roller . The medium printer according to claim 4 , wherein the medium printer is an end located on the downstream side in the shifting direction . The first drive roller is composed of a plurality of drive rollers spaced apart from each other and rotatable about the same rotation axis,
Said movable roller guides, among the plurality of driving rollers constituting the first driving roller, is disposed on the most downstream side near Ru drive dynamic rollers biassing direction by the biassing rollers The media printer according to claim 5 , wherein the printer is a media printer. During the centering by the biassing rollers, the movable roller guide, characterized in that said first print medium is fixed to anywhere such as not to touch the position of the outer peripheral surface of the first driving roller The medium printer according to claim 5 .