JP2013227130A - Carrier device and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier device with a guide unit for preventing buckling of recording paper.SOLUTION: A carrier device 100 includes a feed roller 9 for carrying recording paper 15a as a member to be carried, and a guide unit 110 disposed immediately in the carrying-direction front of the feed roller 9. The guide unit 110 comprises a first guide part 111 disposed on one side in the width direction of the recording paper 15a, and a second guide part 112 disposed on the other side in the state of facing the first guide part 111. The first guide part 111 has guide members 117a-117g coming into abutment with width-direction edge surface of the recording paper 15a and advancing/retreating in accordance with planar-direction skew of the recording paper 15a. The second guide part 112 has guide members 119a-119g which abut on the other width-direction edge surface of the recording paper 15a and which can advance/retreat in accordance with the planar-direction skew of the recording paper 15a. The respective guide members are continuously disposed along the carrying direction of the recording paper 15a.

Description

  The present invention relates to a transport apparatus and a printing apparatus.

  In the conventional roll paper printing apparatus, the recording paper wound around the outer periphery of the roll due to the inertia force of the roll paper during the unwinding operation of the roll paper as a transported member stored in the roll paper storage unit May be loosened and loosened outward. The part of the outer peripheral side of the roll paper that has been loosened and loosened is shifted in the width direction to become a skewed state (or a meandering state), the edge of the roll paper is caught by the edge of the roll paper guide, and it is fed out while being bent. There was a problem that it was.

  Therefore, the first roll paper guide, the second roll paper guide, and the third roll paper guide are fixed in parallel between the roll paper storage unit and the feed roller from the roll paper storage unit side in order. When the roll paper guide width W3, the second roll paper guide width W2, and the third roll paper guide width W1 are set, W3> W2> W1≈the roll paper width, and the slanting state is gradually increased toward the feed roller. There has been proposed a transport apparatus (or a printing apparatus using the transport apparatus) that has been corrected to eliminate bending (see, for example, Patent Document 1).

JP 2007-320107 A

However, in Patent Document 1 described above, since the roll paper guide width is gradually reduced toward the feeding direction and each roll paper guide is fixed, the following occurs when the roll paper is skewed: It is conceivable that the leading end of the roll paper is caught by the roll paper guide and is sent out while being bent.
Further, in Patent Document 1, skewing near the roll paper unwinding position can be improved to some extent. However, when the distance from the roll paper unwinding position to the feed roller is long, before reaching the feed roller, It is conceivable that the roll paper is skewed, and it is difficult to correct the skew near the feed roller.

  Furthermore, since the roll paper guide is fixed, there is a problem that the roll paper guide width cannot be easily switched when there are a plurality of types of roll paper widths.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A transport apparatus according to this application example includes a feed roller that transports a sheet-like transported member, and a transported member guide device that is disposed on the upstream side in the transport direction of the feed roller. The transported member guide device includes a first guide portion disposed on one side in the width direction of the transported member and a second guide disposed to face the first guide portion with the transported member interposed therebetween. Each of the first guide portion and the second guide portion is in contact with the end surface in the width direction of the transported member and corresponds to the skew in the planar direction of the transported member. And a plurality of guide members arranged continuously along the transport direction of the transported member.
Here, as a sheet-like to-be-conveyed member, paper, a resin sheet, a metal sheet etc. are included, for example, as a form of a to-be-conveyed member, the thing wound by roll shape and the thing of a fixed size are contained.

  According to this application example, the width direction of the transported member is regulated by the plurality of guide members that can be moved back and forth along the feeding direction of the transported member. Therefore, when the transported member is skewed and pushed so that the edge in the width direction of the transported member bites into the guide member, the guide member retreats due to the load, so the transported member is pressed against the guide member. Or being caught, it can be prevented from being conveyed with the occurrence of bending or wrinkles. As a result, there is an effect that the occurrence of transport clogging can be suppressed.

Application Example 2 In the transport apparatus according to the above application example, the first guide portion and the second guide portion cause the transported member to skew in a predetermined traveling direction on the downstream side in the feed direction of the transported member. It is preferable that a guide portion having a slope to be corrected is provided.
Here, the downstream side in the feed direction indicates a position where the transported member is fed out from the first guide portion and the second guide portion.

As described above, the transported member can be transported in a skewed state without bending or wrinkles by the movable guide member. However, if the skewed state is maintained, the transport destination position of the transported member is shifted. However, the skew can be gradually corrected in a predetermined traveling direction by the guide portion having the slope.
Further, when the tip corner of the transported member comes into contact with the inclined surface of the guide unit, the transported member is rotated with the contact position as the rotation center, and is transported to the upstream guide member among the plurality of guide members. Although the edge surface in the width direction of the member may be pressed, since the guide member can be advanced and retracted, it is possible to prevent the portion from being bent or wrinkled.

  Application Example 3 In the transport apparatus according to the application example described above, it is preferable that each of the plurality of guide members is urged toward the transported member by a spring.

  In this way, it is possible to easily realize a structure in which each guide member can advance and retract independently. Further, the biasing force of the spring can be easily adjusted by changing the spring constant.

  Application Example 4 In the transport device according to the application example, portions of the plurality of guide members that are in contact with the transported member are rounded into a substantially arc shape along a feeding direction of the transported member. Is preferred.

  When the member to be conveyed moves from the upstream side to the downstream side in the feeding direction by rounding the portion of the guide member that contacts the conveyed member into a substantially arc shape along the feeding direction of the conveyed member, The member can be smoothly conveyed without being caught by the next guide member.

  Application Example 5 In the transfer device according to the application example, each of the plurality of guide members is housed in a partition wall so as to be movable back and forth, and is provided on a sliding surface between the guide member and the partition wall. It is preferable that a friction reducing means is provided.

The guide member is required to smoothly advance and retract due to the skew load of the sheet-like transported member. Therefore, by providing the friction reducing means on the sliding surface between the guide member and the partition wall, the guide member can be smoothly advanced and retracted.
As the friction reducing means, for example, a lubricant, a bearing, or the like can be used.

  Application Example 6 In the transfer device according to the application example described above, the first guide portion and the second guide portion include a guide portion driving mechanism that moves in accordance with the width dimension of the transferred member. Are preferred.

  By providing the first guide portion and the second guide portion with the guide portion drive mechanism, it is possible to realize a transport device that can transport transported members having different width dimensions.

  Application Example 7 A printing apparatus according to this application example includes a droplet discharge head, a platen facing the droplet discharge head, a feed roller that transports recording paper on the platen, and a transport direction of the feed roller A recording paper guide device disposed on the upstream side of the recording paper, wherein the recording paper guide device includes a first guide portion disposed on one side in the width direction of the recording paper, and the first paper sandwiching the recording paper. The second guide portion disposed so as to face the guide portion, each of the first guide portion and the second guide portion being in contact with a width direction end surface of the recording paper, and the recording It has a plurality of guide members which can be moved back and forth corresponding to the skew in the plane direction of the paper and which are continuously arranged along the feeding direction of the recording paper.

  The recording paper guide device provided in the printing apparatus of this application example is an apparatus in which the above-described transported member guide device is adapted to a recording paper as a transported member. Accordingly, when the recording paper is skewed so that the edge in the width direction of the recording paper is pushed into the guide member, the recording member is pushed by the load, so that the recording paper is pushed by the guide member. In addition, by being caught, it can be prevented from being conveyed with the occurrence of bending or wrinkles. As a result, there is an effect that occurrence of conveyance jamming (so-called paper jam) can be suppressed. In addition, it is possible to prevent deterioration in print quality due to bending or wrinkles.

  Application Example 8 In the printing apparatus according to the application example described above, the first guide portion and the second guide portion cause the recording paper to be skewed in a predetermined traveling direction on the downstream side in the recording paper conveyance direction. It is preferable to provide a guide portion having a slope that moves straight.

As described above, the recording sheet is not bent or wrinkled by the movable guide member and can be transported in the skewed state. However, if the skew is kept skewed, the position of the recording paper transport destination is shifted. The skew can be gradually corrected in a predetermined traveling direction by the guide portion having the slope. Accordingly, printing can be performed so as to be orthogonal to the edge in the width direction of the recording paper.
Further, when the leading edge of the recording paper comes into contact with the inclined surface of the guide portion, the recording paper is rotated around the contact position as a rotation center, and the width of the recording paper is set on the upstream guide member among the plurality of guide members. Although the direction edge surface may be pressed, since the guide member can be advanced and retracted, it is possible to prevent the portion from being bent or wrinkled.

  Application Example 9 In the printing apparatus according to the application example described above, it is preferable that each of the plurality of guide members is urged toward a position where the guide member is in contact with the recording paper by a spring.

  In this way, it is possible to easily realize a structure in which each guide member can advance and retract independently. Further, the biasing force of the spring can be easily adjusted by changing the spring constant.

  Application Example 10 In the printing apparatus according to the application example described above, it is preferable that portions of the plurality of guide members that are in contact with the recording paper are rounded into a substantially arc shape along a feeding direction of the recording paper. .

  When the recording paper moves from the upstream side to the downstream side in the feeding direction by rounding the portion of the guide member that contacts the recording paper into a substantially arc shape along the feeding direction of the recording paper, It can be transported smoothly without being caught. In particular, it is effective for recording paper that is easily bent and easily wrinkled.

  Application Example 11 In the printing apparatus according to the application example described above, each of the plurality of guide members is housed in a partition wall so as to be movable back and forth, and is provided on a sliding surface between the guide member and the partition wall. It is preferable that a friction reducing means is provided.

The guide member is required to smoothly advance and retract due to the skew load of the recording paper. Therefore, by providing the friction reducing means on the sliding surface between the guide member and the partition wall, the guide member can be smoothly advanced and retracted.
As the friction reducing means, for example, a lubricant, a bearing or the like can be used, but it is desirable to use a dry lubricating means in order to prevent the recording paper from being stained.

  Application Example 12 In the printing apparatus according to the application example, the first guide portion and the second guide portion include a guide portion driving mechanism that moves in accordance with the width dimension of the recording paper. Is preferred.

By providing the first guide portion and the second guide portion with a guide portion drive mechanism, it is possible to realize a printing apparatus capable of printing on recording paper having different width dimensions.
The width dimension of the recording paper is defined by a print command. However, if the guide unit drive mechanism is driven based on this print command, an operation for moving the first guide unit and the second guide unit before printing is necessary. Absent.

Structure explanatory drawing which shows schematic structure of a conveying apparatus. (A) is a schematic plan view, (b) is sectional drawing which shows the AA cut surface of (a). FIG. 6 is an explanatory diagram schematically illustrating a recording paper conveyance operation using a conveyance device. 1 is an explanatory diagram of an overall configuration showing the inside of a printing apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Note that the drawings referred to in the following description are schematic diagrams in which the vertical and horizontal scales of each member or part are different from actual ones in order to make each member a recognizable size.
(Transport device)

  FIG. 1 is an explanatory diagram illustrating a schematic configuration of the transport apparatus 100. Examples of the sheet-like transported member include paper, metal sheets, resin sheets, and the like that are flexible and easy to bend and easily wrinkle. Here, a roll paper used for printing is illustrated as an example. A description will be given along the transport path. Of the roll paper, the unwound range is represented as recording paper 15a. In the transport apparatus 100, the roll paper 15 is set on the roll paper drive shaft 13 so as to be freely rotatable. The roll paper 15 (recording paper 15a) is conveyed onto the table 160 via the feed roller 7, the load roller 8, the roll paper guide 12, and the feed roller 9. A guide device 110 as a transported member guide device is disposed immediately upstream of the feed roller 9 in the recording paper transport direction.

  A feeding presser roller 7a that presses the recording paper 15a against the feeding roller 7 is disposed at the position where the feeding roller 7 is disposed, and a load roller 8 for applying tension to the recording paper 15a is provided downstream of the feeding roller 7 in the transport direction. Has been placed. A roll paper guide 12 is disposed between the guide device 110 and the load roller 8 to regulate the position of the recording paper 15a in the thickness direction and the width direction. A PF motor 9 a is connected to the feed roller 9, and a paper pressing roller 10 that presses the recording paper 15 a against the feed roller 9 is disposed.

The table 160 corresponds to a platen in the printing apparatus, and a suction hole (not shown) for sucking the recording paper 15a to the surface of the table 160 is opened.
Next, the configuration of the guide device 110 will be described.
(Guide device)

  2A and 2B show an embodiment of the guide device 110, where FIG. 2A is a schematic plan view, and FIG. 2B is a cross-sectional view taken along the line AA in FIG. In FIG. 2A, the lower side may be represented as the upstream side and the upper side may be represented as the downstream side with respect to the feeding direction of the recording paper 15a. The guide device 110 is opposed to the first guide portion 111 disposed on one side (left side in the figure) in the width direction with the recording paper 15a sandwiched between the upper portion of the guide plate 120 and the recording paper 15a. And a second guide portion 112 arranged as described above.

  The first guide portion 111 is in contact with the edge in the width direction of the recording paper 15a, and can advance and retreat in the width direction corresponding to the skew in the planar direction of the recording paper 15a, and in the feeding direction of the recording paper 15a. A plurality of guide members 117a, 117b, 117c, 117d, 117e, 117f, and 117g are arranged continuously from the upstream side.

On the other hand, the second guide portion 112 is in contact with the edge in the width direction of the recording paper 15a and can advance and retreat in the width direction corresponding to the skew in the planar direction of the recording paper 15a. A plurality of guide members 119a, 119b, 119c, 119d, 119e, 119f, and 119g are arranged continuously from the upstream side in the direction.
The number of guide members is not limited to the above.

  Each of the guide members 117a to 117g is housed inside the partition wall 130 and is configured to be able to advance and retreat in the width direction of the recording paper 15a. Each of the guide members 119a to 119g is housed inside the partition wall 131 and is configured to be able to advance and retreat in the width direction of the recording paper 15a.

  Each of the guide members 117a to 117g and the guide members 119a to 119g is biased by a spring 18 toward the recording paper 15a. The urging force of the spring 18 can be easily moved by a pressing load caused by the skew of the recording paper 15a, and when the load is released, it moves to a position where it abuts against the end face in the width direction of the recording paper 15a. The spring load at this time is set to be substantially [0].

  In addition, as shown in FIG. 2A, the portion (leading end portion) of each guide member that is in contact with the edge in the width direction of the recording paper 15a is rounded into a substantially arc shape along the feeding direction. With such a shape, when the recording paper 15a moves from the upstream side to the downstream side in the feeding direction, the paper can be smoothly fed without being caught by the next guide member. For example, when the leading end of the recording paper 15a reaches the guide member 119a, the recording paper 15a is not slipped and caught by a substantially arc-shaped portion. Further, when the leading end portion of the recording paper 15a reaches the guide member 119b beyond the guide member 119a, the recording paper 15a is not slid and caught in a substantially arc-shaped portion.

  The first guide portion 111 is provided with a guide portion 113 for introducing the recording paper 15a between the guide members 117a to 117g and the guide members 119a to 119g on the upstream side of the guide member 117a. Further, the second guide portion 112 is also provided with a guide portion 114 for introducing the recording paper 15a between the guide members 117a to 117g and the guide members 119a to 119g. As shown in FIG. 2A, the guide portion 113 is formed with a slope 113 a and a feed guide surface 113 b that narrows the width of the guide portion 114 from the upstream side toward the downstream side. A slope 114a and a feed guide surface 114b are formed to narrow the width of the guide portion 113 from the upstream side toward the downstream side. By the guide portions 113 and 114, the recording paper 15a can be introduced between the guide members 117a to 117g and the guide members 119a to 119g within the assumed skew range of the recording paper 15a.

  The guide members 117a to 117g and 119a to 119g are required to smoothly advance and retreat due to the skew load of the recording paper 15a. Therefore, friction reducing means is provided on the sliding surface between each guide member and the partition walls 130 and 131. As the friction reducing means, for example, a lubricant, a bearing, or the like can be used, but it is desirable to use a dry lubricating means for preventing the recording paper from being soiled or for miniaturization.

  Further, the first guide portion 111 has a guide portion 115 having a slope 115a for gradually moving the skew of the recording paper 15a in a predetermined traveling direction and a recording paper restricting portion 115b on the downstream side of the guide member 117g. The second guide portion 112 includes a guide portion having a slope 116a that gradually advances the skew of the recording paper 15a in a predetermined traveling direction and a recording paper regulating portion 116b on the downstream side of the guide member 119g. 116 is provided.

  Accordingly, the recording paper 15a that passes between the recording paper restriction unit 115b and the recording paper restriction unit 116b is conveyed to the feed roller 9 in a predetermined rectilinear posture along the recording paper restriction unit 115b and the recording paper restriction unit 116b. The Since the paper pressing roller 10 is urged to the feed roller 9, the recording paper 15 a is hardly skewed after passing through the paper pressing roller 10.

By the way, the width of the roll paper 15 (recording paper 15a) is not one type. Therefore, the guide device 110 is provided with guide unit driving mechanisms 140 and 141 that can change the distance between the first guide unit 111 and the second guide unit 112 corresponding to the roll paper width in accordance with the roll paper width. .
Next, the guide part drive mechanisms 140 and 141 will be described with reference to FIGS. The illustrated guide unit driving mechanism unit illustrates a structure using a rack and a pinion as one embodiment.

  A rack 143 is provided at the center of the first guide 111 in the feeding direction toward the guide plate 120, and a pinion 142 that meshes with the rack 143 is provided on the guide plate 120.

  On the other hand, a rack 145 is provided toward the guide plate 120 at the center of the second guide portion 112 in the feed direction, and a pinion 144 that meshes with the rack 145 is provided on the guide plate 120.

  Here, when the pinion 142 is rotated clockwise, the first guide portion 111 is moved away from the recording paper 15a (for example, moved from the P1 position to the P3 position), and when the pinion 142 is rotated counterclockwise. The first guide unit 111 moves in a direction approaching the recording paper 15a (for example, moves from the P1 position to the P2 position). The first guide unit 111 moves along slide guides 121 and 122 provided on the guide plate 120.

  On the other hand, when the pinion 144 is rotated clockwise, the second guide portion 112 is moved in a direction approaching the recording paper 15a (for example, moved from the P1 position to the P2 position), and when the pinion 144 is rotated counterclockwise, The second guide unit 112 moves in a direction away from the recording paper 15a (for example, moves from the P1 position to the P3 position). The second guide portion 112 is also movable along slide guides 121 and 122 provided on the guide plate 120.

The pinions 142 and 144 are rotated clockwise or counterclockwise by a motor (not shown). Therefore, if the pinion 142 is rotated clockwise and the pinion 144 is rotated counterclockwise in accordance with the recording paper width, it can be applied to a wide recording paper, the pinion 142 is rotated counterclockwise, and the pinion 144 is rotated clockwise. If it rotates, it can handle recording paper with a narrow width. A motor may be provided exclusively for each of the first guide part 111 and the second guide part 112, and if an intermediate gear is interposed on one side, the motor can be made one.
For example, in the case of a printing apparatus, the motor may be rotated by a predetermined angle from the information on the print command.

Next, the operation of transporting the recording paper 15a using the transport device 100 described above will be described.
FIG. 3 is an explanatory diagram for schematically explaining the conveyance operation of the recording paper 15 a using the conveyance device 100. FIG. 3A shows the time when the leading end 15b of the recording paper 15a has reached a position where it contacts the guide member 119b. The recording paper 15 a has a leading end portion 15 b that is skewed in the −X direction. The guide members 119a and 119b are retracted in the −X direction by the skew of the recording paper 15a. Therefore, in this state, no bending or wrinkle occurs at the leading end of the recording paper 15a. In this state, the recording paper 15a does not contact the guide portions 113 and 114.

  Further, FIG. 3B shows a state in which the recording paper 15a is conveyed. FIG. 3B shows a state in which the leading end portion 15b of the recording paper 15a has passed through the guide members 117g and 119g. As shown in FIG. 3B, the recording paper 15a is conveyed while being skewed in the -X direction. The guide members 119a to 119g are retracted in the −X direction by the recording paper 15a. At this time, the retraction amount of the guide member 119g on the downstream side of the guide member 119a on the upstream side increases along the skew of the recording paper 15a, and the leading end portion 15b of the recording paper 15a moves the guide member 119g from the guide member 119a. There is no folding or wrinkle of the recording paper 15a during the passing process. Even in this state, the recording paper 15 a does not contact the guide portions 113 and 114.

  FIG. 3C shows a state where the recording paper 15a is further conveyed from the state shown in FIG. FIG. 3C shows a state in which the leading end portion 15b of the recording paper 15a passes through the guide members 117g and 119g and contacts the inclined surface 116a of the downstream guide portion 116. If the paper feed is continued in a state where the leading end portion 15b is in contact with the inclined surface 116a, the upstream side of the recording paper 15a is slightly rotated in the −X direction with the contact position as a rotation center. At this time, since the upstream guide member 119a retreats in the −X direction, the contact angle between the leading end portion 15b and the inclined surface 116a becomes small, so that the leading end portion 15b of the recording paper 15a smoothly moves to the recording paper regulating portion 115b. , 116b. Even in such a state, the recording paper 15a does not contact the guide portions 113 and 114.

  FIG. 3D shows a state where the recording paper 15a is further conveyed from the state shown in FIG. FIG. 3D shows a state in which the leading end portion 15b of the recording paper 15a passes through the guide members 117g and 119g and comes into contact with the recording paper regulating portion 116b of the downstream guide portion 116. At this time, the recording paper regulating unit 115b of the guide unit 115 has an interval in which the recording paper 15a can be conveyed without being skewed between the recording paper regulating unit 116b and parallel to the recording paper regulating unit 116b. It is arranged to be. The recording paper 15a passes between the recording paper restricting portion 115b and the recording paper restricting portion 116b, so that the recording paper 15a is corrected to advance in a predetermined straight direction from the skew state.

When the recording paper 15a changes its posture from skew to straight, the recording paper 15a may come into contact with any of the guide members 119a to 119g or the guide members 117a to 117g. Each of .about.119g and 117a.about.117g can advance and retreat in accordance with the skew load of the recording paper 15a, so that the recording paper 15a is not bent or wrinkled.
Note that when the recording paper 15a is skewed toward the first guide portion 111 (+ X direction), the skew of the recording paper 15a can be corrected by the same operation.

  According to the transport apparatus 100 described above, the width of the recording paper 15a is composed of the plurality of guide members 117a to 117g that can be moved back and forth and arranged along the feeding direction of the recording paper 15a as the transported member, and the guide members 119a to 119g. The direction position is regulated. Therefore, when the recording paper 15a is skewed and the edge in the width direction of the recording paper 15a is pressed against one of the guide members, the guide member retreats due to the load, so that the recording paper 15a is one of the guide members. It is possible to prevent the sheet from being conveyed with the occurrence of bending or wrinkles by being pressed by one or by being caught. As a result, there is an effect that the occurrence of transport clogging can be suppressed.

In addition, the recording paper 15a can be conveyed in a skewed state without bending or wrinkles by the movable guide members 117a to 117g and 119a to 119g. Therefore, the skew is fed in a predetermined straight direction by the guide portion 115 having the inclined surface 115a and the recording paper restricting portion 115b and the guide portion 116 having the inclined surface 116a and the recording paper restricting portion 116b. It can be corrected.
When the corner portion of the leading end portion 15b of the recording paper 15a comes into contact with the inclined surface 115a or 116a, the edge surface in the width direction of the recording paper 15a may come into contact with the upstream guide member of the plurality of guide members. However, since these guide members can be advanced and retracted, it is possible to prevent the contact portion from being bent or wrinkled.

  Further, since each of the plurality of guide members is urged toward the recording paper 15a by the spring 118, a structure in which each of the guide members can advance and retract independently can be easily realized. . The biasing force of the spring 118 can be easily adjusted by changing the spring constant.

  Further, by rolling the portions of the guide members 117a to 117g and 119a to 119g that contact the recording paper 15a into a substantially arc shape along the feeding direction of the recording paper 15a, the recording paper 15a is moved from the upstream side to the downstream side in the feeding direction. When moving, it can be smoothly conveyed without being caught by the next guide member. For example, when the leading end portion of the recording paper 15a passes through the guide member 117a and reaches the guide member 117b, the leading end portion of the recording paper 15a contacts the range of the arc portion of the guide member 117b, so that the occurrence of catching can be prevented.

  Each of the plurality of guide members is housed in the partition wall 130 (or the partition wall 131) so as to be able to advance and retreat, and the sliding surface between each guide member and the partition wall 130 (or the partition wall 131) is subjected to friction. A reduction means is provided. Thus, each guide member can smoothly advance and retract due to the load on the recording paper 15a.

Furthermore, the first guide part 111 and the second guide part 112 are provided with guide part drive mechanisms 140 and 141 that move in accordance with the width dimension of the roll paper 15 (recording paper 15a). By adopting such a configuration, it is possible to realize the transport device 100 that can transport the roll paper 15 (recording paper 15a) having different width dimensions.
(Printer)

  Next, a printing apparatus using the above-described transport apparatus 100 will be described.

  FIG. 4 is an explanatory diagram of the overall configuration showing the inside of the printing apparatus. The printing apparatus 1 includes a printing apparatus main body and a conveying apparatus 100 for recording paper 15a as main components. The printing apparatus main body includes a droplet discharge head 3, a platen 21 that faces the droplet discharge head 3 and sandwiches the recording paper 15 a, and a suction hole (not shown) opened in the platen 21. And a suction mechanism unit 5 for sucking the recording paper 15a to the platen surface. In addition, a PW detection sensor 14 that measures the width dimension of the recording paper 15 a is provided in conjunction with the droplet discharge head 3. The droplet discharge head 3 is an ink jet head in the present embodiment, and since a well-known one can be adopted, description thereof is omitted.

The transport device 100 uses the guide device 110 described above. The configuration of the transport apparatus 100 will be described along the transport path of the recording paper 15a. The roll paper 15 is set on the roll paper drive shaft 13. The roll paper 15 is conveyed through the feed roller 7 (feed presser roller 7 a), the load roller 8, and the PF mechanism driving unit 6, and is discharged from the recording paper discharge port 11.
Hereinafter, the area unwound from the roll paper 15 is referred to as a recording paper 15a.
A roll paper shaft drive motor (not shown) is connected to the roll paper drive shaft 13 and is driven when the roll paper 15 is rewound (back feed: reverse feed).

  The PF mechanism driving unit 6 includes a feed roller 9, a paper pressing roller 10 that presses the recording paper 15 a against the feed roller 9, and a PF motor 9 a for rotationally driving the feed roller 9. When the roll paper 15 is rewound, the paper pressing roller 10 is separated from the feed roller 9.

  A rotary encoder (not shown) is disposed on the PF mechanism drive unit 6 and the roll paper drive shaft 13 (or both drive motors). The conveyance speed and conveyance distance of the recording paper 15a are detected using the detection value of the rotary encoder. The rotary encoder on the PF mechanism drive unit 6 side detects the transport speed and transport distance in the forward feed direction and the roll paper drive shaft 13 side in the reverse feed direction.

  A roll paper guide 12 and a guide device 110 are provided between the load roller 8 and the feed roller 9. The guide device 110 is disposed immediately before the upstream side of the feed roller 9.

  The platen 21 is provided with a plurality of suction holes (not shown) arranged in a matrix form in the conveyance direction of the recording paper 15a and the width direction orthogonal to the conveyance direction. The suction mechanism unit 5 that adsorbs the recording paper 15a to the surface of the platen 21 is disposed.

  The recording paper 15a is regulated by the roll paper guide 12 until the conveyance position until the recording paper 15a reaches the conveyance path between the first guide portion 111 and the second guide portion 112 of the guide device 110 shown in FIG. 12 and the feed roller 9 may be skewed or meandered. Therefore, the skew or meandering of the recording paper 15a is corrected by the guide device 110, and the width direction position (posture) of the platen 21 is restricted within a predetermined range.

The printing apparatus 1 using the conveying apparatus 100 as described above is pushed when the edge of the width direction is pushed into any one of the guide members 117a to 117g and 119a to 119g by the skew of the recording paper 15a. However, the moving member retreats. Accordingly, it is possible to prevent the recording paper 15a from being conveyed with bending or wrinkles due to being pressed or caught by the guide member. As a result, there is an effect that occurrence of conveyance jamming (so-called paper jam) can be suppressed.
In addition, it is possible to prevent deterioration in print quality due to bending or wrinkles.

  DESCRIPTION OF SYMBOLS 9 ... Paper feed roller, 15a ... Recording paper, 100 ... Conveyance apparatus, 110 ... Guide apparatus, 111 ... 1st guide part, 112 ... 2nd guide part, 117a-117g ... Guide member, 119a-119g ... Guide member, 113 , 114 ... guide part, 115, 116 ... guide part, 140, 141 ... guide part drive mechanism.

Claims (12)

A feed roller that conveys a sheet-like member to be conveyed;
A transported member guide device disposed on the upstream side in the transport direction of the feed roller,
The transported member guide device includes a first guide portion disposed on one side in the width direction of the transported member and a second guide disposed to face the first guide portion with the transported member interposed therebetween. And comprising
Each of the first guide portion and the second guide portion is in contact with the end surface in the width direction of the member to be transported, and is capable of advancing and retreating corresponding to the skew in the planar direction of the member to be transported. And having a plurality of guide members continuously arranged along the transport direction of the transported member,
A conveying device characterized by the above. The first guide portion and the second guide portion include a guide portion having a slope that causes the skew of the transported member to go straight in a predetermined traveling direction on the downstream side in the transport direction of the transported member. ,
The conveying apparatus according to claim 1. Each of the plurality of guide members is biased toward the transported member by a spring,
The conveying apparatus according to claim 1 or 2, characterized by the above-mentioned. The portions of the plurality of guide members that are in contact with the transported member are rounded into a substantially arc shape along the feed direction of the transported member;
The conveying apparatus according to any one of claims 1 to 3, wherein: Each of the plurality of guide members is housed inside the partition wall so as to be able to advance and retract,
Friction reducing means is provided on the sliding surface between the guide member and the partition;
The transport apparatus according to claim 1, wherein The first guide portion and the second guide portion include a guide portion drive mechanism that moves in accordance with a width dimension of the transported member;
The transport apparatus according to claim 1, wherein: A droplet discharge head;
A platen facing the droplet discharge head;
A feed roller for conveying the recording paper onto the platen;
A recording paper guide device disposed on the upstream side in the conveyance direction of the feed roller,
The recording paper guide device has a first guide portion disposed on one side in the width direction of the recording paper, and a second guide portion disposed so as to face each other with the recording paper interposed therebetween,
Each of the first guide portion and the second guide portion is in contact with the end surface in the width direction of the recording paper, and can advance and retreat corresponding to the skew in the planar direction of the recording paper. Having a plurality of guide members arranged continuously along the feeding direction of
A printing apparatus characterized by the above. The first guide portion and the second guide portion include a guide portion having a slope that causes the skew of the recording paper to advance straight in a predetermined traveling direction on the downstream side in the conveyance direction of the recording paper;
The printing apparatus according to claim 7. Each of the plurality of guide members is biased toward a position where it abuts against the recording paper by a spring;
The printing apparatus according to claim 7 or 8, characterized in that: The portions of the plurality of guide members that are in contact with the recording paper are rounded into a substantially arc shape along the recording paper feeding direction,
The printing apparatus according to any one of claims 7 to 9, wherein: Each of the plurality of guide members is housed inside the partition wall so as to be able to advance and retract,
Friction reducing means is provided on the sliding surface between the guide member and the partition;
The printing apparatus according to any one of claims 7 to 10, wherein: The first guide portion and the second guide portion include a guide portion drive mechanism that moves in accordance with a width dimension of the recording paper;
The printing apparatus according to any one of claims 7 to 11, wherein:

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