JP4127215B2 - Drive mechanism and recording apparatus - Google Patents

Description

  The present invention relates to a drive mechanism and a recording apparatus. In particular, the present invention relates to a drive mechanism that transmits rotational force, and a recording apparatus that uses the drive mechanism to perform recording on a recording material to which a magnetic stripe is attached.

2. Description of the Related Art Conventionally, a recording apparatus that performs recording on a recording material to which a magnetic stripe is attached has a movable paper guide that has advanced on the magnetic head scanning path when the magnetic head scans the magnetic stripe. By pushing down, the scanning path of the magnetic head was secured (see, for example, Patent Document 1). In another conventional example, the scanning path of the magnetic head is opened by driving the movable paper guide with an actuator (see, for example, Patent Document 2).
JP-A-7-29126 Japanese Utility Model Publication No.59-157263

  However, when the movable paper guide is pushed down by the carriage, a load is always applied to the carriage while the magnetic head scans the magnetic stripe, and the magnetic head may not be able to read and write data correctly due to the load fluctuation. Further, when the movable paper guide is driven by an actuator, the position control of the movable paper guide by the actuator varies, which may cause a paper jam or a scanning failure of the magnetic head.

  In order to solve the above-described problem, in the first embodiment of the present invention, the drive mechanism includes a movable part that is rotatably provided around a predetermined rotation center, a driven part that rotates around the rotation center, and a movable part. A restricting part that restricts the rotation range of the part, a holding part that rotates together with the driven part and holds the movable part around the rotation axis with respect to the driven part, and a movable part that is restricted by the restricting part. And a rotation driving unit that rotationally drives the driven unit with a larger rotation amount within a predetermined amount range than the rotation range. Thereby, even when there is play between the movable part, the driven part, and the restricting part, the movable part can be reliably rotated to the restricted rotation range.

  The holding part may have a biasing part that biases the movable part in both directions of rotation with respect to the driven part. Thereby, when the driven part is rotationally driven, the movable part can be reliably rotated to the rotational range by urging the movable part in the rotational direction.

  The rotation center is a rod-shaped shaft, and the urging portion has a coil portion wound around the shaft, and a pair of extending portions extending from both ends of the coil portion and sandwiching a part of the driven portion and the movable portion, respectively. When the rotational drive unit rotates the driven unit with a larger rotation amount than the rotation range of the movable unit, a part of the driven unit presses one of the pair of extending units in the rotational direction, thereby causing the pair of The other of the extending portions may press a part of the movable portion in the rotation direction. Since the urging portion is a coil spring, the extending portion can efficiently transmit the rotation of the driven portion to the movable portion in a state where the center of the coil portion is aligned with the rotation center of the driven portion and the movable portion.

  According to the second aspect of the present invention, the recording apparatus for recording on the recording material to which the magnetic stripe is attached rotates on a predetermined center of rotation, so that the recording device advances onto the conveyance path of the recording material. Retractable movable paper guide, driven unit that rotates around the center of rotation, and regulation that restricts the rotation of the movable paper guide to the rotation range from the advance position where it advances onto the transport lane to the retract position where it retracts from the transport lane And a holding portion that rotates together with the driven portion and holds the movable paper guide around the rotation axis with respect to the driven portion so that the movable paper guide can be rotated by a predetermined amount. When the rotation drive unit that rotates the driven unit with a large amount of rotation, the movable paper guide is in the advanced position, the conveyance unit that conveys the recording material on the conveyance path, and the movable paper guide is in the retracted position Was transported on the transport path And a magnetic head for reading and writing information by scanning the magnetic stripe of the recording material.

  As a result, even when there is play between the movable paper guide, the driven portion, and the restricting portion, the movable paper guide can be surely advanced on the conveyance path or can be reliably retracted from the conveyance route. As a result, the recording material is smoothly conveyed and paper jam is prevented, and the data recorded on the magnetic stripe can be read accurately without applying a load from the movable paper guide to the magnetic head.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  1 to 4 are diagrams illustrating the entire recording apparatus 10 according to the embodiment of the present invention. FIG. 1 is a front perspective view showing the external appearance of the recording apparatus 10. The recording apparatus 10 shown in FIG. 1 has an upper cover 12, an upper housing 13, and a lower housing 14, and an opening 18 is provided on the front surface. When the recording material 100 is inserted into the insertion port 18, recording is performed on the recording material 100 by the recording device 10, and the recording material 100 is discharged from the insertion port 18. The upper cover 12 can be removed for the treatment when the recording material 100 is jammed. Here, the recording object 100 is a cut sheet, a film, a copy sheet in which a plurality of sheets are overlapped, a passbook, or the like cut into a predetermined length. Hereinafter, as an example of the recording object 100, the recording apparatus 10 will be described using a bankbook in which a plurality of recording sheets are bound and a recording surface of the recording sheet is opened and a magnetic stripe 110 is provided on the bottom surface.

  FIG. 2 is a perspective view showing a state in which the upper cover 12, the upper housing 13 and the lower housing 14 are removed from the recording apparatus 10. FIG. 3 is a perspective view showing a state in which the recording object presser 32 and the ribbon cassette 60 are further removed from FIG. FIG. 4 is a cross-sectional view of the recording apparatus 10 of FIG. 1 cut up and down along the conveyance direction of the recording material 100.

  As shown in FIGS. 2 to 4, the recording apparatus 10 includes a transport unit 30 that transports the recording material 100 inserted from the insertion port 18, and a target that presses the floating of the recording material 100 from above when reading and writing magnetic information. The recorded object pressing unit 32, the magnetic data reading unit 40 that reads or writes the magnetic information of the magnetic stripe 110 provided on the recording object 100, the platen unit 50 that supports the recording object 100 from below, and the platen unit 50 And a recording unit 20 that is arranged to face the recording material 100 using the ribbon cassette 60. As shown in FIG. 3, the main body upper part 16 provided with the recording part 20 can be opened and closed with respect to the main body part 11 provided with the platen part 50, and the recording object 100 is connected to the main body part 11 and the main body upper part 16. Even when the recording medium is jammed, the recording material 100 can be easily removed.

  As shown in FIG. 4, the transport unit 30 is arranged on the main body unit 11 so as to be opposed to the front pressurizing unit 300 supported by the main body unit 11 before the recording unit 20 and below the front pressurizing unit 300. A front conveying unit 320, and an alignment plate 360 which is arranged behind the platen unit 50 and behind the front pressure unit 300 and the front conveying unit 320, and is movable forward and backward in the conveying path of the recording material 100. A rear pressure unit 302 supported by the main body upper portion 16 on the back side of the recording unit 20, and a rear transport unit 322 disposed in the main body unit 11 so as to face the lower side of the rear pressure unit 302.

  An outline of the operation of the recording apparatus 10 will be described. First, when the recording material 100 is inserted from the insertion port 18, the front pressurization unit 300 and the front conveyance unit 320 convey the recording material 100 to the front of the platen unit 50. At that position, the recording material 100 is aligned in order to correct the inclination of the recording material 100 in the transport direction. After the recording object 100 is aligned, the conveyance unit 30 conveys the recording object 100 to a reading position where the magnetic data reading unit 40 reads the magnetic stripe 110 disposed on the bottom surface of the recording object 100. Thereafter, the magnetic data reading unit 40 moves in the longitudinal direction (left and right direction in FIG. 2) of the main body front portion 17 to read magnetic information from the magnetic stripe 110 disposed on the bottom surface of the recording material 100. Further, the conveyance unit 30 conveys the recording material 100 to a recording position on the platen unit 50. Based on the magnetic information read by the magnetic data reading unit 40, the recording unit 20 is conveyed on the platen unit 50 while moving on the recording material 100 in the longitudinal direction of the main body unit 11 (left and right direction in FIG. 2). Characters and the like are recorded on the recording object 100 by hitting the wire of the recording unit 20 to the recorded object 100 via the ink ribbon of the ribbon cassette 60. Thereafter, the conveyance unit 30 conveys the recording material 100 to the reading position. Based on the information recorded on the recording object 100, the magnetic data reading unit 40 moves again in the longitudinal direction of the main body front portion 17 and writes the magnetic information on the magnetic stripe 110. Next, the transport unit 30 transports the recording material 100 to the near side, and discharges the recording material 100 from the insertion port 18.

  FIG. 5 is a perspective view showing the main body front part 17 in which the magnetic data reading part 40 is arranged. The magnetic data reading unit 40 is supported by two magnetic head guide shafts 470 and 472 that are passed in parallel with the longitudinal direction of the main body front portion 17, and these magnetic head guide shafts 470 and 472. Magnetic head unit 400 reciprocating in the direction (direction of arrow A in the figure), magnetic head driving belt 480 partially fixed to the magnetic head unit 400, and magnetic head driving to reciprocate the magnetic head unit 400 A magnetic head motor 420 that rotationally drives the belt 480, a control board 440 disposed near the magnetic head motor 420 and below the front portion 17 of the main body, and a flexible connection that electrically connects the magnetic head unit 400 and the control board 440. And a cable 450.

  The magnetic head unit 400 includes a magnetic head 410 that scans the magnetic stripe 110 of the recording object 100 by being driven by the magnetic head driving belt 480. The magnetic head 410 reads information from the magnetic stripe 110 by scanning the magnetic stripe 110.

  6 is an enlarged perspective view of the vicinity of the magnetic head unit 400 in FIG. 5, and FIG. 7 is a bottom perspective view of FIG. 6 viewed from the bottom. The magnetic head unit 400 has a substantially U-shape, and magnetic head guide shafts 470 and 472 are inserted into a pair of parallel sides facing each other. On the upper surface of the magnetic head unit 400, a magnetic head 410 is disposed so as to be sandwiched between a pair of side surfaces. A substrate 432 is attached to the bottom surface of the magnetic head unit 400. A decoder 430 that converts information read by the magnetic head 410 into a digital signal and a connector 460 that outputs the digital signal converted by the decoder 430 to the flexible cable 450 are attached to the substrate 432. The magnetic head unit 400 holds and fixes a part of the magnetic head driving belt 480 on the bottom surface.

  The decoder 430 amplifies a signal read by the magnetic head 410 from several mV to several V, an A / D conversion circuit that converts the amplified signal into a digital signal, and an A / D converted digital signal And a demodulating circuit for demodulating and outputting to the flexible cable 450.

  With the above configuration, when the magnetic data reading unit 40 reads information on the magnetic stripe 110 disposed on the bottom surface of the recording material 100, first, the magnetic stripe 110 is transported to a reading position where the magnetic stripe 110 is directly above the magnetic head 410. The unit 30 conveys the recording material 100. In this state, the magnetic head motor 420 rotates and drives the magnetic head drive belt 480, whereby the magnetic head unit 400 is pulled by the magnetic head drive belt 480 and guided by the magnetic head guide shafts 470 and 472, while the front of the main body is being driven. It reciprocates in the longitudinal direction of the part 17. As a result, the magnetic head 410 reads information from the magnetic stripe 110 while scanning while contacting the magnetic stripe 110 from below. In this case, the substrate 432 disposed in the magnetic head unit 400 and the decoder 430 attached to the substrate 432 reciprocate together with the magnetic head 410, and the amplification circuit of the decoder 430 uses the amplification circuit of the decoder 430 to read several mV. The A / D converter circuit converts the amplified signal into a digital signal, and the demodulator circuit demodulates the digital signal and outputs it to the flexible cable 450. The flexible cable 450 is bent due to elastic deformation and follows the reciprocating movement of the magnetic head unit 400. The flexible cable 450 receives a digital signal from the decoder 430 and transmits the digital signal to the control board 440. A control circuit provided on the control board 440 controls the magnetic data reading unit 40 and the recording unit 20 based on a digital signal from the flexible cable 450.

  After recording such as printing on the recording material 100 by the recording unit 20, the magnetic data reading unit 40 writes that fact on the magnetic stripe 110. In this case, the flexible cable 450 transmits an analog signal from the control board 440 to the magnetic head 410, and the magnetic head 410 scans the magnetic stripe 110 and writes to the magnetic stripe 110 based on the analog signal. Do.

  As described above, the information read from the magnetic head 410 is converted into a digital signal by the decoder 430 disposed in the vicinity of the magnetic head 410 and transmitted to the flexible cable 450. Therefore, noise is transmitted while being transmitted by the flexible cable 450. Even if it gets on, it can prevent that the control circuit arranged on the control board 440 misreads the signal. In particular, noise is likely to be generated from the magnetic head motor 420, but since the flexible cable 450 passing through the vicinity of the magnetic head motor 420 transmits a digital signal, it is easy to distinguish the noise from the signal. Signal misreading can be suppressed.

  In the embodiment shown in FIGS. 5 to 7, the decoder 430 is attached to the substrate 432 disposed on the bottom surface of the magnetic head unit 400. However, the position where the decoder 430 is attached is not limited to this. As another example, the magnetic head 410 has a magnetic pole 412, a coil (not shown), and a magnetic shield 416 that surrounds the magnetic pole 412 and the coil, and the decoder 430 is surrounded by the magnetic shield 416 and incorporated in the magnetic head 410. It may be. As a result, noise hardly enters between the magnetic head 410 and the decoder 430, and the digital signal converted by the decoder 430 is output from the magnetic head 410. Therefore, the control circuit provided on the control board 440 misreads the signal. Can be prevented.

  FIG. 8 is a perspective view in which a part of the front surface of the pressure roller side frame 380 is broken in the front pressure unit 300. The front pressure unit 300 has a substantially rectangular parallelepiped shape with an open upper surface, a pressure roller side frame 380 having a rectangular hole 386 on the bottom surface 384, and a pressure supported by the pressure roller side frame 380. The roller unit 304, an urging portion 340 for urging the pressure roller unit 304 downward, and a plate shape parallel to the side surface of the pressure roller side frame 380, are arranged vertically with respect to the pressure roller side frame 380. A spring-side push-up member 354 that is movably supported is provided. The front pressure unit 300 conveys the recording material 100 with the recording material 100 sandwiched between the conveyance roller 324 (illustrated in FIG. 16) of the front conveyance unit 320 disposed below the front pressure unit 300. In order to achieve this, the recording material 100 is pressed against the conveying roller 324.

  The pressing force switching unit 306 includes a pair of pressure rollers 310, a pressure roller shaft 312 that connects the pressure rollers 310, a biasing unit 340 that biases the pressure roller shaft 312 downward, and a pressure roller. It has a universal joint 370 that holds 310 sets at the outer end. A part of the pressure roller 310 of the pressure roller unit 304 protrudes below the bottom surface 384 from the hole 386 and is rotatably held by the pressure roller side frame 380. The pressure roller unit 304 has a set of a plurality of pressure rollers 310 connected by a universal joint 370. In the example shown in FIG. 8, the pressure roller unit 304 has a set of three pressure rollers 310 connected by two universal joints 370. Furthermore, each set of the pressure rollers 310 includes two pressure rollers 310 and a pressure roller shaft 312 that connects the two pressure rollers. The two pressure rollers 310 and the pressure roller shaft 312 are integrally formed of resin, and rubber is attached to the flat outer periphery of the pressure roller 310. As a result, the number of parts can be reduced by reducing the number of universal joints 370 and the load for rotationally driving the pressure roller 310 can be reduced as compared with the case where the pressure rollers 310 are connected one by one with the universal joint 370. can do.

  9 is an enlarged perspective view in which the left side of FIG. 8 is enlarged, and FIG. 10 is an enlarged perspective view in which the right side of FIG. 8 is enlarged. The pressure roller side frame 380 includes a U-shaped shaft support portion 382. Both ends of the pressure roller 310 are inserted into the shaft support portion 382, and the shaft support portion 382 rotatably supports the pressure roller unit 304.

  As shown in FIGS. 9 and 10, the urging unit 340 applies an alignment urging torsion bar 342 that urges the pressure roller shaft 312 downward, and a force larger than the alignment urging torsion bar 342. A torsion bar for conveyance 344 that urges the pressure roller shaft 312 downward. In the present embodiment, the alignment biasing torsion bar 342 is a metal wire and is bent at a substantially right angle in the middle. One end of the alignment biasing torsion bar 342 is attached to the spring attachment portion 346, and the other end is in contact with the pressure roller shaft 312. The bent portion of the alignment biasing torsion bar 342 is locked to the locking portion 347. The alignment biasing torsion bar 342 is twisted around the shaft and biases the pressure roller shaft 312 downward. The conveyance torsion bar 344 is a metal wire having a diameter larger than that of the alignment biasing torsion bar 342, and is bent at a substantially right angle on the way. One end of the conveying torsion bar 344 is attached to the spring attachment portion 346, and the other end is in contact with the pressure roller shaft 312. The bent portion of the conveying torsion bar 344 is locked to the locking portion 348. The conveying torsion bar 344 is twisted around the shaft and urges the pressure roller shaft 312 downward.

  The alignment urging torsion bar 342 includes a time when the recording material 100 is aligned in the transport direction, and always urges the pressure roller shaft 312 downward to press the pressure roller 310 against the recording material 100. ing. Further, the conveying torsion bar 344 is pushed up by the push-up mechanism 350 shown in FIG. 4 during the alignment and does not urge the pressure roller shaft 312, while the conveying torsion bar 344 is added when conveying the aligned recording material 100. In order to press the pressure roller 310 against the recording material 100, the pressure roller shaft 312 is urged downward. The pressure roller shaft 312 has a V-shaped groove 314 at substantially the center where the pair of pressure rollers 310 are arranged, and the conveying torsion bar 344 is pressed in the V-shaped groove 314 of the pressure roller shaft 312. The roller shaft 312 is urged. Further, one end of the conveying torsion bar 344 is inserted into a vertically long groove 355 provided in the spring-side push-up member 354. The urging unit 340 is also an example of a roller pressing device in the present invention.

  As a result, the alignment biasing torsion bar 342 and the conveying torsion bar 344 press the pressure roller unit 304 against the recording material 100 in two steps of strength and weakness, so two coil springs and a sleeve biased by the coil springs are used. Compared to the case, the mechanism for pressing the pressure roller unit 304 can be made smaller.

  Further, the alignment biasing torsion bar 342 and the conveying torsion bar 344 bias the pressure roller shaft 312 connecting the pair of pressure rollers 310 in each pair including the pair of pressure rollers 310. ing. As a result, the alignment biasing torsion bar 342 and the conveying torsion bar 344 can equally bias each pressure roller 310 in the set of pressure rollers 310.

  As shown in FIG. 10, a pressure-side transmission gear 311 is connected to the right end of the pressure roller unit 304 to transmit the driving force from the front transport unit 320 to rotationally drive the pressure roller 310. Since the pressure roller unit 304 is pivotally supported by the U-shaped shaft support portion 382, the pressure-side transmission gear 311 can rotate and drive the pressure roller unit 304 integrally.

  FIG. 11 is a timing chart showing an operation in which the recording object 100 inserted into the recording apparatus 10 is conveyed to the front of the platen unit 50, aligned after that, and further conveyed onto the platen unit 50 after alignment. It is a chart.

  As shown in FIG. 11, the pressure roller 310 and the conveyance roller 324 are stopped in a standby state before the recording object 100 is inserted into the recording apparatus 10. In this standby state, the alignment plate 360 and the push-up member 351 of the push-up mechanism 350 described later are both in the upper position, and the conveying torsion bar 344 does not urge the pressure roller shaft 312. On the other hand, the alignment biasing torsion bar 342 biases the pressure roller shaft 312.

  When the recording material 100 is inserted into the recording apparatus 10 from the standby state, the pressure roller 310 and the conveying roller 324 rotate and convey the recording material 100 until the recording material 100 is in contact with the alignment plate 360. In this case, when the recording object 100 is inclined with respect to the transport direction, a part of the recording object 100 comes into contact with the alignment plate 360 first, and at this time, the other part still contacts the alignment plate 360. Not touching. In this state, when the pressure roller 310 and the conveyance roller 324 are further rotated, the portion of the recording medium 100 that is not yet in contact with the alignment plate 360 has the pressure roller 310 and the conveyance roller 324 arranged in the vicinity of this portion. Thus, the portion that is in contact with the alignment plate 360 first is not conveyed any more while being conveyed until the contact with the alignment plate 360. In this case, since the pressure roller 310 is urged to the recording material 100 by the alignment urging torsion bar 342 having a weak urging force, a portion of the recording material 100 that is in contact with the alignment plate 360 first. The pressure roller 310 and the conveyance roller 324 arranged in the vicinity of the head idle around the recording material 100. When it is determined by the optical sensor (not shown) arranged in the vicinity of the alignment plate 360 that the recording materials 100 are aligned, the rotation of the pressure roller 310 and the conveyance roller 324 is stopped.

  After the recording objects 100 are aligned, the push-up member 351 is lowered. Accordingly, the push-up member 351 brings the pushed-up conveyance torsion bar 344 into contact with the V-shaped groove 314 of the pressure roller shaft 312. Next, in conjunction with the further lowering of the push-up member 351 after being lowered to a predetermined position, the alignment plate 360 is also lowered. When the alignment plate 360 is lowered to the position retracted from the conveyance path of the recording material 100, the alignment plate 360 stops at that position, and the push-up member 351 also stops descending accordingly.

  After the alignment plate 360 and the push-up member 351 are stopped, the pressure roller 310 and the conveyance roller 324 are rotated again and conveyed onto the platen unit 50 with the recording material 100 interposed therebetween, and the recording unit 20 performs recording. In this case, the pressure roller 310 is pressed against the recording material 100 with a strong biasing force by the alignment biasing torsion bar 342 and the conveying torsion bar 344 via the pressure roller shaft 312. 310 and the conveyance roller 324 can convey the recording material 100 with certainty.

  FIG. 12 is a partial cross-sectional view of the push-up mechanism 350. FIG. 12 shows a state in which the alignment plate 360 is retracted from the conveyance path of the recording material 100 and the conveyance torsion bar 344 urges the pressure roller shaft 312.

  As shown in FIG. 12, the push-up mechanism 350 is provided with a groove 355, a spring-side push-up member 354 in which a conveying torsion bar 344 is inserted in the groove 355, and a follower that contacts the lower surface of the spring-side push-up member 354. The side push-up member 352, the plate-like follower member 368 extending in the up-and-down direction integrally with the follower-side push-up member 352, and supported by the main body 11 so as to be rotatable around the rotation shaft 394, and the follower member 368 as a follower up and down It has a cam 390 that reciprocates. The spring-side push-up member 354 and the follower-side push-up member 352 constitute a push-up member 351.

  The follower member 368 is integrated with the follower side push-up member 352 at the upper portion as described above. Further, an alignment plate 360 is disposed on the follower member 368 via a coil spring 362. A long hole 364 that is long in the vertical direction is provided at a substantially center in the vertical direction of the follower member 368, and the rotation shaft 394 of the cam 390 is inserted into the long hole 364. Further, a notch 366 that opens downward is provided in the lower portion of the follower member 368, and a follower fixing shaft 396 that is fixed to the main body 11 is inserted into the notch 366. A pin 398 is inserted between the elongated hole 364 and the notch 366 in the follower member 368.

  The cam 390 has a substantially disc shape, and has a spiral cam groove 392 on the side surface facing the follower member 368. One end of a pin 398 penetratingly attached to the follower member 368 is inserted into the cam groove 392.

  In the state shown in FIG. 12, the pin 398 is in a lower position away from the rotation shaft 394 in the spiral cam groove 392. Accordingly, the follower member 368 is at the lowest position in the movable range with respect to the main body 11 on which the rotation shaft 394 is supported. When the follower member 368 is at the lowest position, the alignment plate 360 disposed above the alignment plate 360 is below the conveyance path of the recording material 100 and is retracted from the conveyance path. Similarly, the follower-side push-up member 352 connected to the upper portion of the follower member 368 is also at the lowest position, and the spring-side push-up member 354 in contact with the follower-side push-up member 352 is pressurized by the torsion bar 344 for conveyance. The roller shaft 312 is allowed to be biased.

  In order to change from this state to the standby state, the cam 390 is rotationally driven in the direction of the solid arrow in FIG. When the cam 390 rotates in the direction of the arrow, the pin 398 rises with respect to the cam 390 along the cam groove 392. In this case, since the rotating shaft 394 and the follower fixing shaft 396 are inserted into the long hole 364 and the notch 366, when the cam 390 rotates in the direction of the arrow, the follower member 368 does not shake from side to side. 11 can rise.

  FIG. 13 is a partial cross-sectional view showing a state in which the alignment plate 360 has advanced into the conveyance path of the recording material 100 and the conveyance torsion bar 344 is separated from the pressure roller shaft 312. When the follower member 368 is raised by rotating the cam 390 from the state shown in FIG. 12, the upper end of the alignment plate 360 finally comes into contact with the bottom surface 384 of the pressure roller side frame 380 as shown in FIG. As a result, the alignment plate 360 advances into the conveyance path of the recording material 100.

  When the cam 390 further rotates from this state, the alignment plate 360 is in contact with the bottom surface 384 and does not rise any further. However, since the coil spring 362 is disposed between the alignment plate 360 and the follower member 368, The follower member 368 further moves up against the urging force of the coil spring 362. Along with this, the follower-side push-up member 352 connected to the upper part of the follower member 368 is also raised, and the spring-side push-up member 354 that is in contact with the follower-side push-up member 352 is pushed up. As a result, the spring-side push-up member 354 pushes up one end of the conveying torsion bar 344 inserted in the groove 355, moves the conveying torsion bar 344 above the pressure roller shaft 312, and pressurizes the pressure roller shaft 312. Release the biasing force. Thus, when the recording materials 100 are aligned in the transport direction, the urging of the transport torsion bar 344 can be released from the pressure roller shaft 312. This state is the standby state shown in FIG. 11, and when the recording material 100 is inserted into the recording apparatus 10, the recording material 100 is rotated with the pressure roller 310 and the conveying roller 324 interposed therebetween, and the recording material 100 is rotated. The sheet is conveyed until it contacts the alignment plate 360 and is aligned.

  When the alignment of the recording objects 100 is completed in the state shown in FIG. 13, the cam 390 is driven to rotate in the direction of the broken arrow shown in FIG. When the cam 390 rotates in the direction of the arrow, the pin 398 moves down with respect to the cam 390 along the cam groove 392. As a result, the follower member 368 descends with respect to the main body 11. In this case, first, the follower-side push-up member 352 integrated with the alignment plate 360 is lowered, so that the spring-side push-up member 354 that is in contact with the follower-side push-up member 352 is also lowered. One end of the conveying torsion bar 344 pushed up by the spring-side push-up member 354 is lowered downward, and the conveying torsion bar 344 is reinserted into the groove 314 of the pressure roller shaft 312 to move the pressure roller shaft 312 downward. Energize. As shown in FIGS. 9 and 10, the conveying torsion bar 344 urges the pressure roller shaft 312 in the V-shaped groove 314 disposed on the pressure roller shaft 312, and therefore, once from the pressure roller shaft 312, Even if it is lifted and separated, the pressure roller shaft 312 can be urged at substantially the same position every time. Further, even when the pressure roller 310 is rotationally driven, the pressure roller shaft 312 can be urged in a direction orthogonal to the rotational axis while the pressure roller 310 is rotationally driven.

  Further, when the follower member 368 is further lowered by the rotation of the cam 390 in the direction of the broken line arrow, the alignment plate 360 is also lowered and retracted from the conveyance path of the recording material 100 as shown in FIG. Return to state.

  14 and 15 are cross-sectional views of the rear pressure unit 302 taken along a plane perpendicular to the rotation axis. FIG. 14 is cut along a plane passing through the groove 314, and FIG. 15 is cut along a plane passing through the shaft support portion 332 of the rear frame 330. The pressure roller unit of the rear pressure unit 302 shown in FIGS. 14 and 15 has the same configuration as the pressure roller unit 304 of the front pressure unit 300, and therefore, the same reference numerals as those of the pressure roller unit 304 are used. It explains using.

  As shown in FIGS. 14 and 15, the rear pressure unit 302 includes a pressure roller unit 304, a rear frame 330 that rotatably supports the pressure roller unit 304, and the pressure roller unit 304 to be recorded. And a biasing portion 334 that biases downward toward 100. The rear frame 330 is provided with a shaft support portion 332 having a U-shape. A pressure roller shaft 312 is inserted into the shaft support portion 332, and the pressure roller shaft 312 is rotatably supported. Since the pressure roller unit 304 is pivotally supported by the shaft support portion 332, the pressure roller unit 304 can be integrally rotated.

  The urging unit 334 is a metal wire, and always urges the pressure roller unit 304 downward toward the recording material 100 in the V-shaped groove 314. Since the pressure roller shaft 312 is made of resin and the urging portion 334 is made of metal, the urging portion 334 with respect to the pressure roller shaft 312 is rotated even if the pressure roller shaft 312 is rotating. By sliding, the urging portion 334 can urge the pressure roller shaft 312 more reliably in the direction orthogonal to the rotation axis. Therefore, the mechanism for pressing the pressure roller unit 304 can be made smaller than when the pressure roller shaft 312 is pressed on both sides of each pressure roller 310 using a coil spring and a sleeve biased by the coil spring. it can.

  FIG. 16 is a partial rear view illustrating an operation in which the front pressurizing unit 300 and the front transport unit 320 transport the recording material 100 with the recording material 100 interposed therebetween. Note that the same operation is performed when the rear pressurizing unit 302 and the rear transport unit 322 transport the recording material 100, and thus the description thereof is omitted.

  As shown in FIG. 16, when the recording material 100 is disposed between the pressure roller unit 304 and the front conveyance unit 320, the pressure roller 310 according to the width of the recording material 100 in the pressure roller unit 304. However, it rides on the recording object 100. In this state, when the pressure roller shaft 312 is rotationally driven, the pressure roller unit 304 is rotationally driven via the conveyance side transmission gear 321 and the pressure side transmission gear 311. As a result, not only the narrowest or widest width of the recording material 100 that is assumed, but also the width of the recording material 100, the pressure roller 310 rides on the recording material 100 and is added. Without being inclined with respect to the recording material 100 as a whole, the recording material 100 can be sandwiched between the front conveyance unit 320 and the recording material 100 can be accurately conveyed. In particular, in the pair of pressure rollers 310, even if one of the pressure rollers 310 rides on, the urging unit 340 can urge both pressure rollers 310 evenly. Further, since the universal joint 370 in the pressure roller unit 304 is not directly urged and no radial force is applied, the pressure roller unit 304 is rotated when a driving force is applied to the pressure roller unit 304 to rotate it. It can rotate smoothly without rattling and suppress the vibration of the recording material 100 to improve the recording accuracy.

  FIG. 17 is an enlarged cross-sectional view in which the vicinity of the platen portion 50 in FIG. 4 is enlarged, and FIG. 18 is a cross-sectional view as seen from above by cutting FIG. In addition, the cut surface of FIG. 17 is a back | inner side (left side in FIG. 18) rather than the cut surface of FIG.

  As shown in FIGS. 17 and 18, the platen unit 50 includes a platen 500 disposed below the recording head 200, a support spring 550 that pushes up and supports the platen 500 from below, and a direction in which the recording head 200 reciprocates. , The platen height restricting portion 560 for restricting the upper limit of the height of the platen 500, platen guide members 532 and 534 for guiding the vertical movement of the platen 500, and the platen 500 And a vibration absorbing member 540 disposed below. A roller as a gap holding unit 220 is attached to the recording head 200 so as to be rotatable with respect to the recording head 200.

  The platen 500 includes a plate-like platen main body 510 that extends in the moving direction of the recording head 200, and a pair of platen legs 520 that extend below the platen main body 510 in the conveyance direction of the recording material 100. The platen main body 510 and the platen foot 520 are integrally formed by, for example, injection molding a resin having elasticity. At both ends of the platen main body 510 in the moving direction of the recording head 200, pins 515 and 516 that protrude outward in the moving direction of the recording head 200 are provided.

  The platen main body 510 has an upper portion 512 having a flat upper surface facing the recording head 200 and a lower portion 514 having a width in the transport direction of the recording material 100 narrower than the upper portion 512. Thereby, the cross section of the platen main body 510 has an umbrella shape as shown in FIG. The gap holder 220 and the recording head 200 move in the longitudinal direction of the upper portion 512 while the gap holder 220 rolls on the upper surface of the upper portion 512 and the recording material 100 conveyed to the upper surface. In this case, the gap holding unit 220 holds the gap between the recording object 100 and the recording head 200 by pushing down the upper surface of the upper part 512 directly or via the recording object 100. The platen foot part 520 restricts the upper limit of the height of the platen 500 pushed up by the support spring 550 by contacting a platen height restricting part 560 described later.

  The platen guide members 532 and 534 are arranged at both ends of the platen 500 in the direction in which the recording head 200 reciprocates and rises vertically upward from the main body 11. These platen guide members 532 and 534 have guide groove portions 533 and 535 in the vertical direction, respectively. When the pin 515 of the platen 500 is inserted into the guide groove 533 and the pin 516 of the platen 500 is inserted into the guide groove 535, the guide grooves 533 and 535 guide the vertical movement of the platen 500. Furthermore, the lower limit of the height of the platen 500 is regulated by the bottom surfaces of the guide groove portions 533 and 535 coming into contact with the pins 515 and 516. However, even when the platen 500 is pushed down through the thickest recording material 100 that is supposed to be used for recording, the pins 515 and 516 do not contact the bottom surfaces of the guide groove portions 533 and 535. The height is set.

  The vibration absorbing member 540 is made of, for example, a material having sound absorption and elasticity, such as sponge, and is arranged with the alignment plate 360 in the conveyance direction of the recording material 100 so as to cover the lower part of the lower part 514 of the platen 500 and a part of the side surface. It is arranged between the rear conveyance unit 322. The vibration absorbing member 540 is in close contact with the platen leg 520 of the platen 500 and sandwiches it from both sides of the recording material 100 in the transport direction. Further, the vibration absorbing member 540 biases the platen 500 to the platen guide members 532 and 534. In the embodiment shown in FIGS. 17 and 18, the upper side of the vibration absorbing member 540 in the transport direction of the recording material 100 is crushed in the direction along the transport direction to be larger than the downstream side. 514 is inserted. Thereby, in the vibration absorbing member 540, the urging force from the upstream side in the transport direction with respect to the lower portion 514 of the platen 500 becomes stronger than the urging force from the downstream side. Accordingly, the platen 500 is urged downstream as a whole, and the pins 515 and 516 of the platen 500 are pressed against the downstream side walls of the recording material 100 in the guide groove portions 533 and 535, respectively. As a result, the vibration absorbing member 540 urges the platen 500 in a direction perpendicular to the vertical direction in which the platen 500 vibrates, so that the vibration of the platen 500 can be more reliably absorbed.

  Here, a gap G smaller than the moving width in which the platen 500 moves in the vertical direction is provided between the lower surface 513 of the upper portion 512 of the platen 500 and the upper surface 542 of the vibration absorbing member 540. As a result, when the amount of vertical movement of the platen 500 is small, the vibration absorbing member 540 absorbs vibration by the biasing force in the direction orthogonal to the direction in which the platen 500 vibrates. Further, when the amount of vertical movement of the platen 500 is large, the vibration absorbing member 540 comes into contact with the upper portion 512 of the platen 500 and absorbs vibration of the platen 500 also in the vertical direction. Therefore, the vibration absorbing member 540 can more reliably absorb the vibration of the subsequent platen 500 while the platen 500 follows the pressing of the recording head 200.

  FIGS. 19 and 20 are schematic diagrams for explaining a state in which the platen 500 bends when pushed down by the gap holding unit 220. FIG. 19 shows a state where the recording head 200 is in a position close to the standby position, and FIG. 20 shows a state where the recording head 200 is located at the approximate center of the reciprocating movement. In addition, the arrow in the figure indicates a position where the height is restricted by the platen height regulating portion 560 in the platen 500.

  The operation of the platen unit 50 in the configuration shown in FIGS. 17 to 20 will be described. First, the transport unit 30 transports the recording objects 100 aligned in the transport direction onto the flat upper surface of the upper part 512 of the platen 500. Next, the timing belt 250 described later is driven by the carriage motor 240, so that the head carriage 230 is guided and moved to the recording head guide shaft 260 passed in the longitudinal direction of the main body upper portion 16. As a result, the head carriage 230 moves the recording head 200 and the gap holding unit 220 in the longitudinal direction of the platen 500. In this case, the gap holding unit 220 directly rolls on the upper portion 512 in the region where the recording material 100 is not placed on the upper portion 512 of the platen 500. On the other hand, in the region where the recording object 100 is placed on the upper part 512 of the platen 500, the gap holding part 220 rides on the recording object 100 and rolls on the recording object 100. The upper surface of the upper part 512 of the platen 500 is pushed down through the recording material 100. Accordingly, the gap holding unit 220 holds a desired gap between the recording material 100 arranged on the upper part 512 of the platen 500 and the recording head 200. Even when the platen 500 is suddenly pushed down by riding on the recording material 100 from the state in which the gap holding unit 220 is rolling directly on the upper part 512 of the platen 500, Due to the frictional force with which the vibration absorbing member 540 is in contact and the sliding load in which the pins 515 and 516 of the platen 500 are pressed against the downstream side wall of the recording material 100 in the guide groove portions 533 and 535, respectively. The vibration of the platen 500 can be absorbed quickly and reliably.

  As described above, the gap holding unit 220 rolls on the recording medium 100 to hold a desired gap between the recording medium 100 and the recording head 200, while the recording head 200 is configured with the ink ribbon of the ribbon cassette 60. By recording a dot by hitting a plurality of wires on the recording object 100 via the recording medium, characters and the like are recorded on the recording object 100. In the present embodiment, since the vibration absorbing member 540 is pressed against the lower portion 514 of the platen 500, the vibration of the platen 500 is absorbed even when the vibration that hits the recording material 100 is transmitted to the platen 500. Can do.

  As shown in FIGS. 19 and 20, the support spring 550 that pushes up and supports the platen 500 from below and the platen height regulating portion 560 that regulates the upper limit of the height of the platen 500 are provided at the same position in the longitudinal direction. It is done. The platen 500 has elasticity as described above, and is pressed down by the recording material 100 to bend as indicated by a broken line in the drawing. However, for the sake of explanation, the curve is exaggerated and indicated by a broken line. The dotted line in the figure will be described later.

  FIG. 21 is a side view of the platen 500 viewed from the direction in which the recording head 200 reciprocates. The platen 500 has the platen main body 510 and the platen foot 520 as described above. The platen foot portion 520 has a vertical portion 522 extending vertically downward from two places on the platen main body 510 and a horizontal portion 524 extending horizontally from the lower end of the vertical portion 522 downstream in the conveyance direction of the recording material 100. The shape is L-shaped. The upper surface 525 of the horizontal portion 524 is in contact with a contact portion 564 of a platen height restricting portion 560 described later, whereby the upper limit of the height of the platen 500 pushed up by the support spring 550 is restricted.

  FIG. 22 is a perspective view of the platen height restricting portion 560. The platen height regulating portion 560 protrudes on the flat spring receiving portion 562 that contacts the lower end of the supporting spring 550 that pushes up the platen 500 and the spring receiving portion 562, and is inserted into the supporting spring 550 to move the supporting spring 550 in the vertical direction. A spring locking portion 563 that is locked while being guided, a contact portion 564 that is disposed downstream of the spring locking portion 563 in the conveyance direction of the recording material 100, and a recording head in the platen height regulating portion 560. 200 is provided with a shaft portion 568 extending along the conveyance direction of the recording material 100 on one end side (right side in the drawing) in the direction along the 200 reciprocation.

  The contact portion 564 has a lower surface 565 at a position higher than the spring receiving portion 562 with a gap between it and the spring receiving portion 562. The contact portion 564 is provided with a long hole 566 that passes through the spring receiving portion 562 and is long in the direction of reciprocal movement of the recording head 200. The platen height restricting portion 560 is provided with a screw hole 567 at a position farther from the shaft portion 568 than the long hole 566.

  FIG. 23 to FIG. 26 are schematic diagrams for explaining the platen height regulating portion 560 and the height adjusting portion 570. FIG. 23 is a partial perspective view of the vicinity of the platen height regulating portion 560 as viewed from the conveyance direction of the recording material 100. FIG. 24 is a cross-sectional view of FIG. 23 taken along a plane perpendicular to the moving direction of the recording head 200. 25 is a cross-sectional view taken along section A of FIG. 24, and FIG. 26 is a cross-sectional view taken along section B of FIG.

  As shown in FIG. 23, the spring receiving portion 562 of the platen height regulating portion 560 supports the support spring 550 by coming into contact with the lower end of the support spring 550. Accordingly, the support spring 550 pushes the platen 500 toward the recording head 200 with respect to the platen height regulating portion 560. On the other hand, the lower surface 565 of the contact portion 564 of the platen height restricting portion 560 is in contact with the upper surface 525 of the horizontal portion 524 in the platen foot portion 520 of the platen 500, thereby restricting the platen foot portion 520 from moving upward. To do. As a result, the platen height restricting portion 560 restricts the upper limit of the height of the platen 500 pushed up by the support spring 550. In addition, a penetrating portion 569 having a rectangular through hole penetrating the main body portion 11 is provided below the horizontal portion 524 in the contact portion 564. Thereby, when the platen 500 is pushed up by the gap holding part 220, the platen leg part 520 of the platen 500 can be retracted to the through part 569.

  A shaft portion 568 of the platen height restricting portion 560 is pivotally supported by a height restricting portion holding portion 580 fixed to the main body portion 11. As a result, the platen height restricting portion 560 rotates around the shaft portion 568, and the height of the spring receiving portion 562 and the contact portion 564 disposed on the platen height restricting portion 560 with respect to the main body portion 11 is adjusted. can do.

  As shown in FIGS. 24 to 26, a push-down screw 574 is inserted into the elongated hole 566 of the contact portion 564 of the platen height regulating portion 560 with a gap between the contact portion 564 and pushed down. The lower surface of the screw head of the screw 574 comes into contact with the upper surface of the contact portion 564, and the distal end portion of the push-down screw 574 is screwed into a screw hole 576 provided in the main body portion 11. Accordingly, the push-down screw 574 pushes down the platen height regulating portion 560 with respect to the main body portion 11 and defines the upper limit of the height of the platen height regulating portion 560. On the other hand, a push-up screw 572 is screwed into the screw hole 567 of the platen height regulating portion 560, and the tip of the push-up screw 572 comes into contact with the main body portion 11. Accordingly, the push-up screw 572 pushes up the platen height restricting portion 560 with respect to the main body portion 11 and defines the lower limit of the height of the platen height restricting portion 560. The push-up screw 572 and the push-down screw 574 are an example of the height adjustment unit 570 in the present invention.

  In the above configuration, the push-up screw 572 is rotated in the direction to push into the platen height restricting portion 560, and the push-down screw 574 is rotated in the direction to float from the main body portion 11, whereby the contact portion 564 of the platen height restricting portion 560 is rotated. The lower surface 565 moves upward. As a result, the upper limit of the height of the platen 500 is moved upward, and the height of the platen 500 with respect to the recording head 200 when the gap holding part 220 of the recording head 200 is not in contact is increased. On the other hand, the lower surface 565 of the contact portion 564 of the platen height restricting portion 560 is rotated by rotating the push-up screw 572 in the direction of floating from the platen height restricting portion 560 and rotating the push-down screw 574 into the main body portion 11. Moves down. As a result, the upper limit of the height of the platen 500 moves downward, and the height of the platen 500 with respect to the recording head 200 when the gap holding part 220 of the recording head 200 is not in contact is lowered. As described above, the height adjusting unit 570 can adjust and fix the height of the platen height regulating unit 560 with respect to the recording head 200. In this case, even if the upper limit of the height of the platen 500 with respect to the recording head 200 is changed, the relative position between the spring receiving portion 562 of the platen height regulating portion 560 and the platen 500 does not change, so the spring receiving portion 562 and the platen 500 The support spring 550 disposed between the support plate 500 and the support spring 550 can keep the biasing force that pushes up the platen 500 substantially constant.

  As shown in FIG. 25, the push-up screw 572 is arranged farther from the shaft portion 568 than the push-down screw 574. Accordingly, when a downward force is applied to the platen height regulating portion 560 by the gap holding portion 220 pushing down the platen 500, the platen 568 and the push-up screw 572 sandwich the push-down screw 574 stably. Since the height restricting portion 560 is supported, the platen height restricting portion 560 can be prevented from being deformed or broken.

  As shown in FIG. 26, the support spring 550 and the platen height regulating portion 560 are provided at the same position in the direction in which the recording head 200 reciprocates. Therefore, when the platen 500 is not pushed down by the gap holding part 220, the bending of the platen 500 occurring between the position where the platen 500 is pushed up by the support spring 550 and the position where the height is restricted by the platen height restricting part 560. The moment can be reduced, and the plastic deformation and creep of the platen 500 over time can be suppressed.

  Furthermore, as shown in FIG. 24, the push-down screw 574 is disposed in the vicinity of the contact portion 564 in the conveyance direction of the recording material 100. Thereby, in the platen height regulating portion 560, the bending moment generated between the position pushed down by the push-down screw 574 and the contact portion 564 pushed up by the platen foot portion 520 can be reduced, and the platen height regulating portion 560 can suppress plastic deformation and creep over time.

  FIG. 27 is a schematic diagram for explaining the amount of displacement of the platen 500 when the gap holding unit 220 moves on the platen 500. In FIG. 27, assuming that the platen 500 is a rigid body, the gap holding part 220 is pushed down by the gap holding part 220 in the platen 500 by the support spring 550 when the platen 500 is pushed down with a constant force. The amount by which the location is displaced is indicated as “displacement by the spring”. Further, in the same figure, when it is assumed that the platen 500 is supported by a rigid body instead of the support spring 550, when the gap holding unit 220 pushes down the platen 500 with a constant force, the platen 500 is elastically deformed. The amount of displacement of the portion pushed down by the gap holding part 220 in the platen 500 is shown as “displacement due to elasticity”.

  When the gap holding unit 220 pushes down the platen 500 with a certain force, the amount of displacement of the portion is the sum of the displacement by the spring and the displacement by elasticity. As shown in FIG. 27, between the pair of support springs 550, the sum of the displacement of the platen 500 due to the spring and the displacement due to elasticity is substantially constant. Therefore, the force required for the gap holding unit 220 to push down the platen 500 by a certain displacement is substantially constant between the pair of support springs 550. Accordingly, the gap holding unit 220 can stably push down the platen 500 when reciprocating on the platen 500.

  28 and 29 are schematic diagrams for explaining the amount of displacement of the platen 500 when the gap holding unit 220 moves on the platen 500 in the first comparative example. In addition, the same reference number is attached | subjected about the structure similar to FIG. 19 and FIG. 20, and description is abbreviate | omitted. In Comparative Example 1 shown in FIGS. 28 and 29, unlike the present embodiment shown in FIGS. 19 and 20, the platen height regulating portions 560 are arranged at both ends in the longitudinal direction of the platen 500, and the platen 500 is arranged from above. The upper limit of the height of the platen 500 is regulated by pressing.

  In the first comparative example, when the recording head 200 is in a position close to the standby position and approximately at the center of the reciprocating movement, the platen 500 is curved as shown by dotted lines in FIGS. However, in these drawings, the curve is exaggerated for the sake of explanation. In FIG. 29, the platen 500 is pushed down by the gap holding part 220 near the center and curved downward, pushed up by the support spring 550 on both sides thereof, and curved upward, and further curved downward at both ends. Even when the gap holding part 220 does not push down the platen 500, the position where the height is restricted by the platen height restricting part 560 is closer to the end than the position where the platen 500 is pushed up. There is a moment that bends in a direction that protrudes upward. As described above, the platen 500 of Comparative Example 1 may be plastically deformed or creep may occur over time. For comparison, the curve of Comparative Example 1 is shown by a dotted line in FIGS. 19 and 20.

  30 and 31 are schematic diagrams for explaining the amount of displacement of the platen 500 when the gap holding unit 220 moves on the platen 500 in the second comparative example. In Comparative Example 2 shown in FIGS. 30 and 31, unlike the present embodiment shown in FIGS. 19 and 20, the platen height regulating portion 560 is arranged on the center side of the support spring 550 in the longitudinal direction.

  In the comparative example 2, when the recording head 200 is in a position close to the standby position and is positioned at the approximate center of the reciprocating movement, the platen 500 is curved as indicated by the dotted lines in FIGS. However, in these drawings, the curve is exaggerated for the sake of explanation. For comparison, the curvature of the platen 500 in the present embodiment of FIGS. 19 and 20 is shown by broken lines in FIGS. 30 and 31, respectively. For example, as shown in FIG. 30, when the recording head 200 is on the left side, the right end of the platen 500 is very greatly deformed upward. Even when the gap holding part 220 does not push down the platen 500, the position where the height is restricted by the platen height restricting part 560 is closer to the center than the position where the platen 500 is pushed up by the support spring 550. There is a moment that bends in a direction that protrudes downward. As described above, the platen 500 of Comparative Example 2 may also be plastically deformed or creep may occur over time.

  Compared with Comparative Example 1 and Comparative Example 2, in the present embodiment, the support spring 550 and the platen height restricting portion 560 are provided at the same position in the longitudinal direction of the platen 500, so that they are pushed down by the gap holding portion 220. The curvature is not good. Even when the platen 500 is not pushed down by the gap holding unit 220, the bending moment generated between the position where the platen 500 is pushed up by the support spring 550 and the position where the height is regulated by the platen height regulating unit 560. , And the plastic deformation and creep of the platen 500 over time can be suppressed.

  Further, in the present embodiment, the support spring 550 may be positioned below the gap holding unit 220 at the position where the recording head 200 stands by. Thus, even when the gap holding unit 220 pushes down the platen 500 while the recording head 200 is waiting, a bending moment generated between the position pushed up by the support spring 550 and the position pushed down by the gap holding unit 220. , And the plastic deformation and creep of the platen 500 over time can be suppressed.

  FIG. 32 is an enlarged perspective view in which the vicinity of the ribbon take-up unit 600 of the recording apparatus 10 is enlarged. In FIG. 32, the ribbon cassette 60 has been removed from the recording apparatus 10 for explanation. Also, gear teeth are omitted from FIG. 32 to FIG. 41 to be described later for the sake of simplification.

  As shown in FIG. 32, the ribbon take-up unit 600 has a ribbon take-up shaft 660 that is disposed in the vicinity of the belt drive pulley 610 that drives the timing belt 250 and engages with the take-up reel of the ribbon cassette 60. The belt drive pulley 610 is a gear fixed to the rotating shaft 242 of the carriage motor 240 shown in FIG. The belt drive pulley 610 rotates forward and backward to drive the timing belt 250 in a reciprocating manner, while the ribbon take-up unit 600 performs ribbon winding both when the belt drive pulley 610 is rotating forward and when it rotates in reverse. The take-up shaft 660 is rotated in a certain direction, and the ink ribbon of the ribbon cassette 60 is taken up.

  FIG. 33 is a front view of the ribbon take-up unit 600. FIG. 34 is a perspective view of the planetary lever 620 and the planetary gear 700. FIG. 35 is a perspective view of the ribbon take-up unit 600 with the planetary lever 620 and the planetary gear 700 removed. FIG. 36 is a rear perspective view of the ribbon winding unit 600 as viewed from the downstream side in the conveyance direction of the recording material 100. 34 shows a state in which a part of the planetary drive gear 710 is broken for the sake of explanation, and also shows a state in which the planetary driven gear 730 is lifted from the planetary drive gear 710.

  As shown in FIG. 33, the ribbon take-up unit 600 includes a sun gear 612 provided on the rotation shaft 242, a planetary lever 620 that meshes with the rotation shaft 242, and a planetary gear 700 disposed on the planetary lever 620. A forward driven gear 630 and a reverse driven gear 640 that rotate along with the planetary gear 700 when meshed with the planetary gear 700, an intermediate gear 650 that meshes with the reverse driven gear 640, and a forward driven gear 630 and an intermediate gear 650. And the ribbon take-up shaft 660 that is always meshed with each other. The ribbon take-up unit 600 further includes a housing 670 that houses the planetary lever 620, the planetary gear 700, the forward driven gear 630, the reverse driven gear 640, the intermediate gear 650, and the ribbon take-up shaft 660.

  The sun gear 612 is provided integrally with the belt drive pulley 610 on the side closer to the carriage motor 240 than the belt drive pulley 610 in the axial direction of the rotating shaft 242, and is a gear having a smaller diameter than the belt drive pulley 610. Thereby, the sun gear 612 rotates normally or reversely as the rotating shaft 242 rotates normally or reversely.

  With reference to FIG. 33, the transmission and rotation direction of the rotational driving force in the ribbon take-up unit 600 will be described. When the rotating shaft 242 rotates in the forward direction (in the direction of the broken arrow in FIG. 33), the sun gear 612 provided on the rotating shaft 242 also rotates in the normal direction. Along with this, the planetary lever 620 moves in the direction of the dashed arrow, and the planetary gear 700 provided on the planetary lever 620 revolves on the sun gear 612, so that the planetary gear 700 and the forward driven gear 630. Engage. In this state, when the sun gear 612 further rotates in the forward direction, the planetary gear 700 rotates in the forward direction, and the planetary gear 700 rotates in the direction of the broken arrow in the drawing. Rotate. As the forward driven gear 630 rotates, the ribbon take-up shaft 660 rotates in the direction of the broken arrow in the drawing.

  On the other hand, when the rotation shaft 242 is reversed (in the direction of the solid line arrow in FIG. 33), the sun gear 612 provided on the rotation shaft 242 is also reversed. Along with this, the planetary lever 620 moves in the direction of the solid arrow, and the planetary gear 700 provided on the planetary lever 620 revolves on the sun gear 612, so that the planetary gear 700 meshes with the reverse driven gear 640. . In this state, when the sun gear 612 is further rotated in reverse, the planetary gear 700 is also rotated in association with the rotation, and the reverse driven gear 640 is rotated in the direction indicated by the solid line in FIG. Along with this rotation of the reverse driven gear 640, the intermediate gear 650 rotates in the direction of the solid line in the figure. With this rotation of the intermediate gear 650, the ribbon take-up shaft 660 rotates in the direction of the solid arrow in the drawing.

  As shown in FIG. 34, the planetary lever 620 has a substantially plate-shaped main body 622, and a rotating shaft 720 is inserted near one end of the main body 622 to hold the planetary gear 700. The other end of the main body 622 is provided with an arc-shaped notch 623 concentric with the rotating shaft 242 that meshes with the rotating shaft 242, and a convex portion 624 arranged around the notch 623. The convex portion 624 extends toward the carriage motor 240 along the axial direction of the rotation shaft 242. Thereby, the planetary lever 620 ensures the distance between the sun gear 612 and the planetary gear 700 to a certain level or more. The notch 623 has an arc shape that is notched from one end of the planetary lever 620 toward the planetary gear 700. Thus, even when the planetary gear 700 receives meshing pressure from the forward driven gear 630 and the reverse driven gear 640, the notch 623 comes into contact with the rotating shaft 242 and the planetary lever 620 falls off the rotating shaft 242. Can be prevented.

  The planetary gear 700 is arranged on the planetary lever 620, meshes with the sun gear 612, rotates on the planetary gear 612, and is arranged coaxially with the planetary drive gear 710. The planetary driven gear 730 rotating, the biasing member 740 for biasing the planetary driving gear 710 and the planetary driven gear 730 toward each other, the planetary driving gear 710, the planetary driven gear 730, and the planetary lever 620. And a rotary shaft 720.

  The planetary drive gear 710 has a substantially disk shape, and teeth 712 that mesh with the teeth of the sun gear 612 are provided on the outer periphery. At the center of the planetary drive gear 710, a through hole for receiving the lower portion of the rotating shaft 720 is provided. Outside the through hole, a hole having a plurality of inclined surfaces 714 inclined in the circumferential direction and the axial direction is provided.

  The planetary driven gear 730 has a substantially cylindrical shape whose diameter is smaller than that of the planetary drive gear 710. Teeth 732 that mesh with the forward driven gear 630 and the reverse driven gear 640 are provided on the upper part of the outer periphery of the planetary driven gear 730. A plurality of inclined surfaces 734 inclined in the circumferential direction and the axial direction are provided at the lower portion of the outer periphery of the planetary driven gear 730. The biasing member 740 biases the planetary driven gear 730 to the planetary drive gear 710, so that the planetary drive gear 710 and the planetary driven gear 730 are engaged with each other on the plurality of inclined surfaces 714 and 734 in a normal state. .

  The rotating shaft 720 has a substantially cylindrical shape and has a flange 722 at the upper end. A groove (not shown) is provided around the shaft at the lower end 724 of the rotating shaft 720, and a ring is inserted into the groove (see FIG. 36). Thereby, the lower end 724 of the rotating shaft 720 is prevented from being removed from the planetary lever 620.

  The urging member 740 contacts the flange 722 of the rotating shaft 720 to urge the planetary driven gear 730 to the planetary drive gear 710 and urge the planetary drive gear 710 to the planetary lever 620. As a result, the biasing member 740 gives a load torque to the planetary lever 620 to the planetary drive gear 710, so that the drive force applied from the sun gear 612 to the planetary drive gear 710 is transmitted to the planetary lever 620, and this drive force Is converted into a driving force for rotating the planetary lever 620. An example of the biasing member 740 is a coil spring.

  In the above configuration, when a torque equal to or less than the reference value is applied between the planetary drive gear 710 and the planetary driven gear 730, the planetary drive gear 710 and the planetary driven gear 730 rotate integrally. On the other hand, when a torque greater than the reference value is applied between the planetary drive gear 710 and the planetary driven gear 730, the inclined surface 734 of the planetary driven gear 730 resists the biasing force of the biasing member 740. At 710, it slides up the meshed slope 714. As a result, the planetary driven gear 730 is lifted with respect to the planetary drive gear 710 and is freely rotated with respect to the planetary drive gear 710. Thereby, the torque applied to the planetary driven gear 730 is limited. This prevents the ribbon take-up unit 600 from being damaged when a large torque is applied to the planetary driven gear 730 when, for example, the ink ribbon is entangled in the ribbon cassette 60 and the ribbon is locked.

  As described above, since the torque is limited between the planetary drive gear 710 and the planetary driven gear 730 in the planetary gear 700, it is not necessary to provide a mechanism for limiting the torque separately from the planetary gear 700, and the number of parts is reduced. can do. In addition, since the urging member 740 urges the planetary driven gear 730 in the above order, even when the planetary driven gear 730 rotates freely with respect to the planetary driving gear 710, the planetary driving gear 710 and the sun gear 612 Can be kept in mesh. Further, a torque serving as a reference value can be set by the inclination of the slopes 714 and 734. For example, when slopes 714 and 734 having small inclinations rising in the axial direction are provided, the reference value of the torque at which the planetary driven gear 730 starts to rotate freely with respect to the planetary drive gear 710 becomes large. On the other hand, when the slopes 714 and 734 having a gentle and large inclination are provided in the axial direction, the reference value of the torque becomes small. In the present embodiment, since the inclination of the inclined surfaces 714 and 734 is symmetric with respect to the rotational direction of the planetary drive gear 710 and the planetary driven gear 730, the planetary drive gear 710 and the planetary driven gear 730 rotate forward. The reference value of torque can be made the same in the case of reverse rotation. In addition, by making the inclinations of the inclined surfaces 714 and 734 asymmetric, the reference value of the torque can be set to a different value depending on whether the planetary drive gear 710 and the planetary driven gear 730 are rotating forward or in reverse.

  As shown in FIG. 35, the forward driven gear 630 includes a large-diameter gear portion 632 that meshes with the planetary driven gear 730, and is formed integrally with the large-diameter gear portion 632 above the large-diameter gear portion 632. A small gear portion 634 having a smaller diameter than the portion 632. The large-diameter gear portion 632 meshes with the planetary driven gear 730 when the planetary lever 620 rotates around the rotation shaft 242 when the sun gear 612 switches from reverse rotation to normal rotation. On the other hand, when the sun gear 612 reverses, the large-diameter gear portion 632 is disengaged from the planetary driven gear 730. The small-diameter gear portion 634 always meshes with the ribbon take-up shaft 660. Therefore, when the large-diameter gear portion 632 rotates with the planetary driven gear 730, the small-diameter gear portion 634 transmits this rotational driving force to the ribbon take-up shaft 660 and rotates the ribbon take-up shaft 660.

  Similarly, the reverse driven gear 640 is formed integrally with the large-diameter gear portion 642 above the large-diameter gear portion 642 and meshed with the planetary driven gear 730, and has a smaller diameter than the large-diameter gear portion 642. Small-diameter gear portion 644. The reverse driven gear 640 meshes with the planetary driven gear 730 by rotating the planetary lever 620 around the rotation shaft 242 when the sun gear 612 switches from normal rotation to reverse rotation. On the other hand, when the sun gear 612 rotates in the forward direction, the large diameter gear portion 642 is disengaged from the planetary driven gear 730. The small diameter gear portion 644 always meshes with the intermediate gear 650. Further, the intermediate gear 650 always meshes with the ribbon take-up shaft 660. Therefore, when the large-diameter gear portion 642 rotates with the planetary driven gear 730, the small-diameter gear portion 644 transmits this rotational driving force to the intermediate gear 650, and the intermediate gear 650 further transmits this rotational driving force to the ribbon take-up shaft 660. And the ribbon take-up shaft 660 is rotated.

  Here, in the large-diameter gear portion 632 of the forward rotation driven gear 630 and the large-diameter gear portion 642 of the reverse rotation driven gear 640, the planetary driven gear 730 is lifted from the planetary drive gear 710 against the biasing force of the biasing member 740. Even in the state, it has an axial height that meshes with the planetary driven gear 730. As a result, even when a torque greater than the reference value is applied and the planetary driven gear 730 is lifted from the planetary drive gear 710, the planetary driven gear 730 is disengaged from the forward rotation driven gear 630 or the reverse rotation driven gear 640. Can be prevented. Therefore, the lower part of the planetary driven gear 730 can be smoothly returned to the original position where it enters the planetary drive gear 710.

  The ribbon take-up shaft 660 has a large-diameter gear portion 662 that always meshes with the small-diameter gear portion 634 and the intermediate gear 650 of the forward driven gear 630, and a smaller diameter than the large-diameter gear portion 662, and is inserted into the ribbon cassette 60. And a take-up engaging portion 664 that engages with the reel of the ribbon cassette 60. Thus, as described above, when the sun gear 612 is rotating forward, it receives the rotational driving force from the forward driven gear 630, and when the sun gear 612 is rotating reversely, the rotational driving force from the intermediate gear 650 is received. The receiver and ribbon take-up shaft 660 rotate in the same direction in any case.

  As shown in FIGS. 34 and 36, the planetary lever bearing 672 of the housing 670 has a U-shaped notch that abuts against the convex portion 624 of the planetary lever 620. Thereby, the planetary lever 620 can be smoothly and reliably rotated around the rotation shaft 242 with respect to the housing 670. Further, since the notch 623 of the planetary lever 620 has an arc shape, the ribbon winding unit 600 can be easily assembled as compared with the case where the planetary lever 620 is provided with a through hole and the rotating shaft 242 is inserted. In addition, the sun gear 612 and the planetary lever 620 can be easily attached and detached, whereby the ribbon take-up unit 600 can be easily replaced when the ribbon take-up unit 600 fails. Further, since the sun gear 612 is formed integrally with the belt drive pulley 610, it is not necessary to separately provide the sun gear 612 that meshes with the belt drive pulley 610 and transmits the rotational driving force from the belt drive pulley 610, and the ribbon. The number of parts of the winding unit 600 can be reduced.

  FIGS. 37 and 38 show a state in which the main body upper portion 16 and the recording object pressing portion 32 are removed from the recording apparatus 10 shown in FIGS. 2 and 3. In this state, the conveyance path of the recording material 100 is exposed on the upper surface. In FIG. 37, the movable paper guide 800 has advanced on the conveyance path of the recording material 100, and in FIG. 38, the movable paper guide 800 has retreated downward from the conveyance path of the recording material 100.

  In the state of FIG. 37, the upper surface of the movable paper guide 800 is fixed at the same height as the upper surface of the main body front portion 17. The magnetic head 410 stands by outside the longitudinal direction of the movable paper guide 800, that is, the direction orthogonal to the transport direction. In this state, the recording material 100 is conveyed by the conveying unit 30 and held at a position where the magnetic stripe 110 is aligned with the upper surface of the movable paper guide 800. When the magnetic stripe 110 is conveyed to the upper surface of the movable paper guide 800, the movable paper guide 800 is rotated downward as shown in FIG. When the movable paper guide 800 is retracted from the conveyance path of the recording medium 100, the magnetic head 410 moves in a direction perpendicular to the conveyance direction of the recording medium 100 and scans the magnetic stripe 110. The movable paper guide 800 is an example of the movable part of the present invention.

  The purpose of the recording apparatus 10 is to securely fix the movable paper guide 800 in a flat state with respect to the conveyance path while the conveyance unit 30 conveys the recording material 100. Thereby, the recording material 100 is smoothly conveyed and paper jam is prevented. On the other hand, while the magnetic head 410 scans the magnetic stripe 110, the recording apparatus 10 aims to reliably retract the movable paper guide 800 from the moving path of the magnetic head 410. Thereby, the magnetic head 410 can accurately read the data recorded on the magnetic stripe 110 without receiving a load from the movable paper guide 800.

  FIG. 39 is a perspective view of the movable paper guide unit 80 that drives the movable paper guide 800 as viewed from above. The movable paper guide unit 80 includes a movable paper guide 800, a rotation shaft 810, a driven unit 830, and a rotation drive unit 860. The movable paper guide 800 is supported so as to be rotatable with respect to the rotation shaft 810. The driven unit 830 and the rotation drive unit 860 are fixed to both ends of the rotation shaft 810, respectively, and rotate around a rotation shaft 810 which is an example of the rotation center of the present invention. The movable paper guide 800 includes a movable side restricting portion 802 at the tip. A plurality of movable side restricting portions 802 may be provided in the movable paper guide 800. The movable side regulating unit 802 regulates the rotation range of the movable paper guide 800 by contacting the frame of the recording apparatus 10 when the movable paper guide 800 advances on the conveyance path of the recording material 100.

  FIG. 40 is a perspective view of the movable paper guide unit 80 as viewed from below. A movable side regulating portion 804 protrudes from the lower surface of the movable paper guide 800. The movable side regulating unit 804 regulates the rotation range of the movable paper guide 800 by contacting the frame of the recording apparatus 10 when the movable paper guide 800 is retracted from the moving path of the magnetic head 410. A plurality of movable side restricting portions 804 may be provided in the movable paper guide 800.

  FIG. 41 is an exploded perspective view in which the driven portion 830 side of the movable paper guide unit 80 is exploded in the axial direction. The movable paper guide unit 80 includes a coil spring 820 that transmits the rotation of the driven unit 830 to the movable paper guide 800. The coil spring 820 is an example of the holding part of the present invention. The coil spring 820 is provided between the movable paper guide 800 and the driven portion 830 with the rotating shaft 810 inserted into the coil portion. A fixing ring 840 is provided outside the driven portion 830 in the axial direction of the rotation shaft 810. The fixing ring 840 is fitted into a groove provided at the end of the rotating shaft 810 and regulates the axial position of the driven portion 830 and the coil spring 820.

  The coil spring 820 includes a lower extending portion 822 and an upper extending portion 824 that extend from both ends of the coil portion. The driven portion 830 and the movable paper guide 800 each have an engaging portion 832 and an engaging portion 812 sandwiched between the lower extending portion 822 and the upper extending portion 824. The engaging portion 812 is engaged with the lower extending portion 822 and the upper extending portion 824 at a position farther from the rotation shaft 810 than the engaging portion 832. The coil spring 820 rotates together with the driven portion 830 and biases the movable paper guide 800 in both directions of rotation with respect to the driven portion 830, thereby placing the movable paper guide 800 around the rotation shaft 810 with respect to the driven portion 830. Hold for constant rotation. The lower extending portion 822 and the upper extending portion 824 intersect at a portion close to the coil portion, and when the interval between the lower extending portion 822 and the upper extending portion 824 is increased, the diameter of the coil portion is reduced. ing.

  A protrusion on the wall is provided on the side surface of the engaging portion 832 on the movable paper guide 800 side. This prevents the upper extending portion 824 from falling off the engaging portion 832. Further, the engaging portion 812 is provided with a valley-like notch that engages with the lower extending portion 822. This prevents the lower extending portion 822 from falling off the engaging portion 812.

  In this embodiment, the driven portion 830 is fixed with respect to the rotating shaft 810 by the D cut of the bearing portion 834. A rotation drive unit 860 is fixed to the other end of the rotation shaft 810 by a D cut. The D cut is an example of a rotation stopper that fixes the rotation shaft 810, the driven portion 830, and the rotation drive portion 860 in the rotation direction around the rotation shaft 810. The force for rotating the driven unit 830 is transmitted from the rotation driving unit 860 via the rotation shaft 810. The rotation drive unit 860 and the rotation shaft 810 are an example of the rotation drive unit of the present invention. In another example, the rotation driving unit may directly transmit the rotational force to the driven unit 830 without passing through the rotation shaft 810. In this case, the driven portion 830 may be supported so as to be rotatable with respect to the rotation shaft 810.

42 and 43 respectively show a state in which the movable paper guide 800 has advanced onto the conveyance path of the recording material 100 (hereinafter referred to as an advanced state) and a state in which the movable paper guide 800 has retracted from the movement path of the magnetic head 410. It is a side view showing (hereinafter referred to as a retracted state).
The frame of the recording apparatus 10 includes a fixed-side restricting portion 850 that contacts the upper surface of the movable-side restricting portion 802 when the movable paper guide 800 is advanced, and a fixed-side restricting portion 852 that contacts the movable-side restricting portion 804 in the retracted state. Have. The fixed side restricting portion 850 is provided on the lower surface of the end portion of the main body front portion 17 and restricts the upward rotation of the movable paper guide 800. On the other hand, the fixed side restricting portion 852 is provided in parallel with the rotation shaft 810 downstream of the rotation shaft 810 in the conveyance direction of the recording material 100, and restricts the downward rotation of the movable paper guide 800. That is, the rotation range of the movable paper guide 800 is restricted by the range of the fixed-side restricting portion 850 and the fixed-side restricting portion 852 around the rotation shaft 810.

  When positioning the movable paper guide 800 in the advanced state, the rotation driving unit 860 receives a rotational force in the direction of the arrow from a gear 862 connected to a motor that drives the recording object pressing unit 32 and the push-up mechanism 350. This rotational force is transmitted from the rotation drive unit 860 to the driven unit 830 via the rotation shaft 810. Along with this, the upper surface of the engaging portion 832 provided in a part of the driven portion 830 pushes the upper extending portion 824 upward in the drawing. The coil spring 820 rotates with the driven portion 830 about the rotation shaft 810, and the lower extending portion 822 rotates upward in the drawing. The lower extending portion 822 contacts the lower surface of the engaging portion 812 provided in a part of the movable paper guide 800 and pushes up the movable paper guide 800 upward. As a result, the movable paper guide 800 rotates upward about the rotation shaft 810, and the movable side restricting portion 802 contacts the fixed side restricting portion 850. The position of the movable paper guide 800 is regulated in a state where the movable side regulating unit 802 is in contact with the fixed side regulating unit 850. In this state, the upper surface of the movable paper guide 800 becomes the same height as the upper surface of the main body front portion 17.

  At this time, the driven unit 830 is rotated in the direction of the arrow by the rotation driving unit 860 with a rotation amount larger by a predetermined amount than the rotation range of the movable paper guide 800 regulated by the fixed side regulating unit 850. Specifically, it is rotated at an angle about 10 ° larger than the rotation range of the movable paper guide 800. Thereby, the engaging part 832 deforms the upper extending part 824 in the rotation direction of the arrow in a state where the rotation of the engaging part 812 and the lower extending part 822 is stopped. As a result, the lower extending portion 822 biases the engaging portion 812 in the rotational direction indicated by the arrow by the spring force of the coil spring 820. As a result, even when there is a play between the movable paper guide 800, the driven portion 830, and the fixed side restricting portion 850, the movable paper guide 800 reliably contacts the fixed side restricting portion 850, and the main body front portion 17 and the movable paper guide. The height of the upper surface of 800 becomes the same. Therefore, a paper jam when the conveyance unit 30 conveys the recording material 100 is prevented.

  Next, with reference to FIG. 43, the operation of the movable paper guide 800 retracting from the moving path of the magnetic head 410 will be described. In this case, the rotation drive unit 860 receives a rotational force from the gear 862 in the direction opposite to the example of FIG. Thereby, the rotation drive part 860, the rotating shaft 810, and the driven part 830 each rotate in the arrow direction of a figure. Along with this, the lower surface of the engaging portion 832 provided in a part of the driven portion 830 pushes the lower extending portion 822 downward, that is, in the direction of the arrow in the drawing. As a result, the coil spring 820 rotates together with the driven portion 830 about the rotation shaft 810, and the upper extending portion 824 rotates downward in the drawing. The upper extending portion 824 contacts the upper surface of the engaging portion 812 provided in a part of the movable paper guide 800 and pushes the movable paper guide 800 downward. As a result, the movable paper guide 800 rotates downward about the rotation shaft 810, and the movable side restricting portion 804 contacts the fixed side restricting portion 852 (not shown). The position of the movable paper guide 800 is regulated in a state where the movable side regulating unit 804 is in contact with the fixed side regulating unit 852. In this state, the movable paper guide 800 is completely retracted from the moving path of the magnetic head 410.

  At this time, the driven unit 830 is rotated in the direction of the arrow by the rotation driving unit 860 with a rotation amount larger by a predetermined amount than the rotation range of the movable paper guide 800 regulated by the fixed side regulating unit 852. Specifically, it is rotated at an angle about 10 ° larger than the rotation range of the movable paper guide 800. Thereby, the engaging part 832 deforms the lower extending part 822 in the rotation direction of the arrow in a state where the rotation of the engaging part 812 and the upper extending part 824 is stopped. As a result, the upper extending portion 824 urges the engaging portion 812 in the rotational direction indicated by the arrow by the spring force of the coil spring 820. As a result, the movable side restricting portion 804 reliably contacts the fixed side restricting portion 852, and the movable paper guide 800 is completely retracted from the movement path of the magnetic head 410 at a constant interval. In this state, the magnetic head 410 can scan the magnetic stripe 110 without receiving a load from the movable paper guide 800 and read / write data accurately.

  As is apparent from the above description, the recording apparatus 10 according to the present embodiment reliably fixes the movable paper guide 800 in a flat state with respect to the conveyance path while the conveyance unit 30 conveys the recording material 100 and magnetically. While the head 410 scans the magnetic stripe 110, the movable paper guide 800 can be reliably retracted from the moving path of the magnetic head 410. Accordingly, the recording material 100 is smoothly conveyed to prevent paper jamming, and the data recorded on the magnetic stripe 110 can be accurately read without applying a load from the movable paper guide 800 to the magnetic head 410. it can.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

2 is a front perspective view showing the appearance of the recording apparatus 10. FIG. 2 is a perspective view showing a state where an upper cover 12, an upper housing 13, and a lower housing 14 are removed from the recording apparatus 10. FIG. FIG. 3 is a perspective view showing a state in which the recording object presser 32 and the ribbon cassette 60 are further removed from FIG. FIG. 2 is a cross-sectional view of the recording apparatus 10 in FIG. 1 cut up and down along the conveyance direction of the recording object 100. It is a perspective view which shows the main body front part 17 by which the magnetic data reading part 40 was distribute | arranged. FIG. 6 is an enlarged perspective view in which the vicinity of the magnetic head unit 400 in FIG. 5 is enlarged. It is the bottom perspective view which looked at Drawing 6 from the bottom. 7 is a perspective view in which a part of the front surface of a pressure roller side frame 380 is broken in the front pressure unit 300. FIG. It is the expansion perspective view which expanded the left side of FIG. It is the expansion perspective view which expanded the right side of FIG. 3 is a timing chart illustrating an operation in which the recording apparatus 10 transports a recording material 100. 5 is a partial cross-sectional view of a push-up mechanism 350. FIG. 4 is a partial cross-sectional view showing a state in which the alignment plate 360 has advanced into the conveyance path of the recording material 100 and the conveyance bar spring 344 is separated from the pressure roller shaft 312. FIG. It is sectional drawing which cut | disconnected the rear pressurization part 302 by the plane perpendicular | vertical to a rotating shaft. It is sectional drawing which cut | disconnected the rear pressurization part 302 by the plane perpendicular | vertical to a rotating shaft. FIG. 6 is a partial rear view illustrating an operation in which the front pressurization unit 300 and the front conveyance unit 320 convey the recording material 100 with the recording material 100 interposed therebetween. FIG. 5 is an enlarged cross-sectional view in which the vicinity of the platen portion 50 in FIG. 4 is enlarged. FIG. 18 is a cross-sectional view of FIG. 17 cut from a horizontal plane indicated by X and viewed from above. FIG. 5 is a schematic diagram illustrating the bending of a platen 500. FIG. 5 is a schematic diagram illustrating the bending of a platen 500. FIG. 5 is a side view of the platen 500 viewed from the direction in which the recording head 200 reciprocates. 5 is a perspective view of a platen height regulating portion 560. FIG. 5 is a partial perspective view of the vicinity of a platen height regulating portion 560 as viewed from the conveyance direction of the recording material 100. FIG. FIG. 24 is a cross-sectional view of FIG. 23 taken along a plane perpendicular to the moving direction of the recording head 200. FIG. 25 is a cross-sectional view of FIG. FIG. 25 is a cross-sectional view of FIG. FIG. 6 is a schematic diagram for explaining a displacement amount of a platen 500. 6 is a schematic diagram illustrating the bending of a platen 500 in Comparative Example 1. FIG. 6 is a schematic diagram illustrating the bending of a platen 500 in Comparative Example 1. FIG. It is the schematic explaining the curvature of the platen 500 in the comparative example 2. It is the schematic explaining the curvature of the platen 500 in the comparative example 2. 3 is an enlarged perspective view in which the vicinity of a ribbon take-up unit 600 of the recording apparatus 10 is enlarged. FIG. 3 is a front view of a ribbon take-up unit 600. FIG. 4 is a perspective view of a planetary lever 620 and a planetary gear 700. FIG. 7 is a perspective view of the ribbon take-up unit 600 with the planetary lever 620 and the planetary gear 700 removed. FIG. 5 is a rear perspective view of the ribbon winding unit 600 as viewed from the downstream side in the conveyance direction of the recording material 100. FIG. FIG. 4 is a perspective view illustrating a state in which a main body upper portion 16 and a recording object pressing portion 32 are removed from the recording apparatus 10 of FIGS. FIG. 38 is a perspective view showing a state in which the movable paper guide 800 of FIG. 37 is retracted from the movement path of the magnetic head 410. FIG. 6 is a perspective view of the movable paper guide unit 80 as viewed from above. It is the perspective view which looked at the movable paper guide unit 80 from the lower part. FIG. 6 is an exploded perspective view in which the driven portion 830 side of the movable paper guide unit 80 is exploded in the axial direction. 4 is a side view showing a state in which a movable paper guide 800 has advanced on a conveyance path of a recording material 100. FIG. 6 is a side view showing a state in which the movable paper guide 800 is retracted from the movement path of the magnetic head 410. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Recording device, 11 Main body part, 12 Upper cover, 13 Upper housing, 14 Lower housing, 16 Upper part of main body, 17 Front part of main body, 18 Insertion port, 20 Recording part, 30 Conveying part, 32 Recorded object pressing part, 40 Magnetic Data reading unit, 50 platen unit, 60 ribbon cassette, 100 recording object, 110 magnetic stripe, 200 recording head, 220 gap holding unit, 230 head carriage, 240 carriage motor, 242 rotating shaft, 250 timing belt, 260 recording head guide Shaft, 300 Front pressure unit, 302 Rear pressure unit, 304 Pressure roller unit, 306 Pressing force switching unit, 310 Pressure roller, 311 Pressure side transmission gear, 312 Pressure roller shaft, 314 Groove, 320 Front conveyance unit , 321 Transfer side transmission gear, 3 2 Rear conveying unit, 324 conveying roller, 330 rear frame, 332 shaft support unit, 334 urging unit, 340 urging unit, 342 alignment urging torsion bar, 344 conveying torsion bar, 346 spring mounting unit, 347 locking Part, 348 locking part, 350 push-up mechanism, 351 push-up member, 352 follower-side push-up member, 354 spring-side push-up member, 355 groove, 360 alignment plate, 362 coil spring, 364 long hole, 366 notch, 368 follower member, 370 Universal joint, 380 Pressure roller side frame, 382 shaft support, 384 bottom surface, 386 hole, 390 cam, 392 cam groove, 394 rotation shaft, 396 follower fixed shaft, 398 pin, 500 platen, 550 support spring, 600 ribbon Winding unit, 6 DESCRIPTION OF SYMBOLS 10 Belt drive pulley, 612 Sun gear, 620 Planetary lever, 622 Main body, 623 Notch, 624 Convex part, 630 Forward rotation driven gear, 632 Large diameter gear part, 634 Small diameter gear part, 640 Reverse driven gear, 642 Large diameter gear Part, 644 small diameter gear part, 650 intermediate gear, 660 ribbon take-up shaft, 662 large diameter gear part, 664 take-up engagement part, 670 housing, 672 planetary lever bearing, 700 planetary gear, 710 planetary drive gear, 712 teeth, 714, 734 Slope, 720 Rotating shaft, 722 Flange, 724 Lower end, 730 Planetary driven gear, 732 Teeth, 740 Energizing member, 800 Movable paper guide, 802, 804 Movable side regulating portion, 810 Rotating shaft, 812 Engaging portion, 820 coil spring, 822 lower extension, 824 upper extension, 830 Drive unit, 832 engaging unit, 834 bearing unit, 840 fixing ring, 850, 852 fixed side regulating unit, 860 rotation drive unit, 862 gear

Claims (4)

A movable part provided rotatably around a predetermined center of rotation;
A follower that rotates about the center of rotation;
A restricting portion for restricting a rotation range of the movable portion;
A holding unit that rotates together with the driven unit and holds the movable unit so that the movable unit can rotate a predetermined amount around the rotation center with respect to the driven unit;
A drive mechanism comprising: a rotation drive unit that rotationally drives the driven unit by a rotation amount larger than the rotation range in which the movable unit is regulated by the regulation unit.   The drive mechanism according to claim 1, wherein the holding unit includes a biasing unit that biases the movable unit in both directions of rotation with respect to the driven unit. The center of rotation is a rod-shaped shaft;
The urging portion is a coil spring having a coil portion wound around the shaft and a pair of extending portions extending from both ends of the coil portion and sandwiching a part of the driven portion and the movable portion. ,
When the rotation drive unit rotates the driven unit with a rotation amount larger than the rotation range of the movable unit, the part of the driven unit presses one of the pair of extending units in the rotation direction. The driving mechanism according to claim 2, wherein the other of the pair of extending portions presses the part of the movable portion in the rotation direction. A recording apparatus for recording on a recording material to which a magnetic stripe is attached,
A movable paper guide capable of advancing and retracting onto the conveyance path of the recording material by rotating around a predetermined rotation center;
A follower that rotates about the center of rotation;
A restricting portion for restricting the rotation of the movable paper guide to a rotation range from an advance position where the rotation of the movable paper guide is advanced on the transport engagement path to a retreat position where the rotation is retracted from the transport engagement path;
A holding unit that rotates together with the driven unit and holds the movable paper guide so that the movable paper guide can rotate a predetermined amount around the rotation center with respect to the driven unit;
When the movable paper guide is in a rotation amount larger than the rotation range regulated by the regulating unit, the rotation driving unit that rotationally drives the driven unit, and the movable paper guide is located at the advanced position, A transport unit for transporting recorded matter;
A recording apparatus comprising: a magnetic head that reads and writes information by scanning a magnetic stripe of a recording material conveyed on the conveyance path when the movable paper guide is in the retracted position.

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