JP2005205715A - Recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus which can suppress an ink stain on a sheet. <P>SOLUTION: In this recording apparatus which is provided with a flexible flat cable 61 for transmitting a driving signal to a recording head, keeps one end 61A of the cable 61 held by a carriage 21 which is equipped with the recording head, and the other end 61B by a base frame 15 facing the carriage 21 so that a bent part 61C can be formed between one end 61A and the other end 61B, where a position of the bent part 61C of the cable 61 is changed along with the carriage 21, a cavity part 63, into which the bent part 61C enters, is provided in an end area P of the base frame 15 on the side of the movement of the bent part 61C. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording apparatus including a signal cable for transmitting a drive signal to a recording head.

  2. Description of the Related Art Generally, a recording apparatus is known in which a recording head is mounted on a carriage that slides on a carriage shaft, and an image is recorded on a sheet that is conveyed onto a platen through an ink ribbon by a recording wire protruding operation of the recording head. .

  As this type of recording apparatus, a signal cable for transmitting a drive signal to the recording head is provided, and one end of this signal cable is connected to the recording head and held by the carriage, and the other end of the signal cable is Some frames are held by a holding portion on a frame facing the carriage (see, for example, Patent Document 1).

The carriage has a bearing portion through which the carriage shaft is inserted, and a slider that slides on the carriage guide frame, and the carriage bearing so that the carriage is slidable on the carriage shaft and the carriage guide frame. A slight gap is provided between the carriage and the carriage shaft and between the carriage guide frame and the slider. Further, when the carriage reciprocates, the position of the bent portion where the signal cable bends moves as the carriage moves, and the reaction force due to the bending of the signal cable applied to the carriage changes.
JP 2003-266864 A

  However, in the above recording apparatus, as the position of the bent portion of the signal cable approaches the carriage due to the movement of the carriage, the reaction force of the signal cable acting on the carriage increases. In particular, when the carriage is moved at high speed, The reaction force of the acting signal cable sometimes becomes excessive. As described above, when the reaction force acting on the carriage becomes excessive, there are gaps between the bearing portion of the carriage and the carriage shaft and between the carriage guide frame and the slider. There is a problem that the recording head is pressed in the direction approaching the platen by the reaction force, and the leading end of the recording head collides with the sheet via the ink ribbon, causing ink stains on the sheet.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording apparatus that can solve the problems of the conventional techniques described above and can suppress ink stains on a sheet.

  In order to solve the above problems, the present invention includes a signal cable for transmitting a drive signal to a recording head, one end of the signal cable is held by a carriage on which the recording head is mounted, and the other end is connected to the one end. In a recording apparatus that is held by a frame facing the carriage so as to form a bent portion therebetween, and the position of the bent portion of the signal cable moves as the carriage moves, the bent portion of the signal cable A recessed portion into which the bent portion enters is provided in an end region of the frame on the moving side.

  In this recording apparatus, the dent portion of the frame may be inclined so that the dent amount gradually becomes deeper in the direction in which the bent portion of the signal cable moves with the cable holding portion of the frame as a starting point.

  In the recording apparatus, the hollow portion of the frame may be recessed in a step shape at an end portion of the frame extending in a flat shape.

  Furthermore, in the recording apparatus, an oil recovery part for recovering the lubricant oil of the carriage shaft may be provided in the recessed part of the frame.

  According to the present invention, ink stains on a sheet can be suppressed.

  Embodiments of the present invention will be described below with reference to the drawings.

[1] First Embodiment FIG. 1 is a perspective view showing a printer main body of a dot impact printer to which a first embodiment of a recording apparatus according to the present invention is applied. 2 and 3 are perspective views showing the configuration of the printer main body of the dot impact printer. FIG. 4 is a cross-sectional view of the printer body.

  A dot impact printer 10 as a recording apparatus shown in FIGS. 1 to 3 presses a recording wire included in a recording head 20 (see FIG. 3) against a sheet (recording paper) via an ink ribbon (not shown), An image including characters is recorded by forming dots on the sheet. As this sheet, there are a cut sheet cut to a predetermined length and a continuous sheet in which a plurality of sheets are connected. The cut sheet includes, for example, plain paper such as cut paper and cut copy paper, as well as passbooks, postcards, and envelopes, and continuous sheets include continuous paper and continuous copy paper.

  The dot impact printer 10 is roughly divided into a printer main body 11 as a recording apparatus main body, a push tractor unit 12 (FIG. 2) and a discharge unit 13 that are detachably attached to the printer main body 11, and an upper portion of the printer main body 11. The upper case 14 </ b> A and the lower case 14 </ b> B are provided as exterior bodies covering the lower portions.

  As shown in FIGS. 2 to 4, the printer main body 11 includes a base frame 15 as a main body frame, a front frame 16 (carriage guide frame), a rear frame 17 (FIG. 4), a left side frame 18 and a right side frame 19. A recording mechanism unit 22 including a recording head 20 and a carriage 21; a first sheet conveying mechanism unit 27 including a platen 23, a sheet guide 24 (FIG. 4), a first driven roller 25, and a second driven roller 26; And a second sheet conveying mechanism 30 including a third driven roller 28 and a driving roller 29.

  A left side frame 18 and a right side frame 19 are erected and fixed to substantially both ends of the base frame 15, the front frame 16, and the rear frame 17. A carriage shaft 31 is bridged between the left side frame 18 and the right side frame 19 and is pivotally supported. Further, a platen 23 is bridged between the left side frame 18 and the right side frame 19 so as to be rotatable, and a seat guide 24 is fixedly disposed on the rear frame 17.

  As shown in FIG. 4, the first sheet transport mechanism 27 including the platen 23 includes a first driven roller 25 and a second driven roller 26 disposed below the platen 23, and the sheet transport on the rear side of the printer main body 11. Configured as a mechanism. The first driven roller 25 and the second driven roller 26 are pivotally supported by the driven roller holder 32. The driven roller holder 32 is urged toward the platen 23 by an urging spring 33 having one end fixed to the rear frame 17, whereby the first driven roller 25 and the second driven roller 26 are pressed against the platen 23 from below. In contact with the platen 23, the platen 23 is rotated and driven.

  The second sheet conveying mechanism 30 is configured as a sheet conveying mechanism on the front side of the printer main body 11 with the third driven roller 28 and the driving roller 29 arranged in contact with each other.

  The platen 23 and the drive roller 29 are rotationally driven in the forward or reverse direction by the drive wheel train 34. The drive wheel train 34 is installed on one of the left side frame 18 and the right side frame 19, for example, the right side frame 19. The drive wheel train 34 includes a sheet conveyance motor 35 (FIG. 2) that can be rotated forward or reverse, a motor pinion that is rotationally and integrally fixed to a drive shaft of the sheet conveyance motor 35, and a driving force from the motor pinion. A plurality of reduction gears that transmit to the platen 23 and a plurality of reduction gears that transmit to the drive roller 29 are configured. With this configuration, the platen 23 and the driving roller 29 are rotated in opposite directions, so that a cut sheet or a continuous sheet can be conveyed from the front to the rear of the printer main body 11 or can be conveyed from the rear to the front of the printer main body 11. To do. Therefore, the cut sheet and the continuous sheet are conveyed in the sub-scanning direction orthogonal to the later-described main scanning direction of the carriage 21.

  Tractor unit mounting portions 40A and 40B are formed on the front side and the rear side of the printer main body 11 of the left side frame 18 and the right side frame 19, respectively, and the push tractor unit 12 is detachably mounted on each. FIG. 2 shows a state where the push tractor unit 12 is mounted only on the front side of the printer main body 11.

  The push tractor unit 12 mounted on the rear side of the printer main body 11 supplies a continuous sheet (for example, continuous paper) to the first sheet conveying mechanism 27 on the rear side, and is a push mounted on the front side. The tractor unit 12 supplies the second sheet conveying mechanism 30 on the front side. The push tractor units 12 mounted on the front side and the rear side of the printer main body 11 have substantially the same configuration, and have a pair of tractors 36 on the left and right. These tractors 36 are supported by a tractor drive pulley (not shown) that is rotatably and axially slidably supported on a tractor drive shaft 37 and a tractor guide shaft 38 that is rotatably and axially slidable. A tractor belt 39 is wound around a tractor driven drive pulley (not shown), and a sheet pressing lid (not shown) is provided.

  When manually feeding sheets from the front side of the printer main body 11 to the second sheet conveying mechanism 30, a manual feed tray (not shown) is mounted between the side frames 18 and 19 on the front side.

  The distance between the pair of tractors 36 can be adjusted according to the width dimension of the continuous sheet (continuous paper) to be conveyed. A plurality of pins protrude from the entire outer periphery of the tractor belt 39 and can be engaged with holes formed on both sides of the continuous sheet in the width direction. The tractor belt 39 is also driven by the drive wheel train 34 described above.

  The carriage 21 is slidably inserted into the carriage shaft 31 and is slidably contacted with the upper end portion of the front frame 16 serving as a carriage guide frame. Further, the recording head 20 is mounted. Since the carriage shaft 31 is arranged in parallel with the platen 23, the carriage 21 is provided so as to be able to travel (scan) in a main scanning direction that coincides with the axial directions of the platen 23 and the carriage shaft 31.

  Specifically, as shown in FIG. 4, the carriage 21 includes a carriage main body 21A on which the recording head 20 is mounted, and a carriage bush as a bearing portion that is held by the carriage main body 21A and through which the carriage shaft 31 is inserted. 21B. The carriage body 21A includes an extending portion 21C that extends in a direction perpendicular to the carriage shaft 31, and a sliding contact as a slider that is slidably contacted with the upper end portion of the front frame 16 at the distal end of the extending portion 21C. A portion 21D is provided. A gap is provided between the carriage bush 21 </ b> B and the carriage shaft 31 so that the carriage 21 can slide on the carriage shaft 31. The carriage bush 21B is, for example, a sintered metal wear-resistant material, impregnated with lubricating oil, and the sliding friction resistance between the carriage bush 21B and the carriage shaft 31 is reduced by the lubricating oil. . Further, since the recording head 20 is mounted on the carriage 21, the sliding contact portion 21 </ b> D of the carriage 21 is pressed against the front frame 16 and is in sliding contact with the weight of the recording head 20 and the carriage 21.

  The carriage 21 includes a belt drive pulley (not shown) rotatably supported by a carriage drive motor 41 in the vicinity of one end of the carriage shaft 31 and a belt driven pulley (not shown) provided in the vicinity of the other end of the carriage shaft 31. And a timing belt 42 (FIG. 4) spanning the belt. Accordingly, the carriage 21 is guided to the carriage shaft 31 and the front frame 16 via the timing belt 42 by the forward or reverse rotation of the carriage drive motor 41, and is scanned leftward or rightward in FIGS. 1 to 3 in the main scanning direction. The Here, the carriage drive motor 41 is configured by a stepping motor, for example, together with the sheet conveyance motor 35.

  A ribbon drive shaft 43 is provided on the front left side of the carriage shaft 31. The ribbon drive shaft 43 moves an ink ribbon (not shown) in a ribbon cassette 44 mounted on the left side frame 18 and the right side frame 19. The ink ribbon is drawn between the recording head 20 and the platen 23 and is movably provided by a ribbon drive shaft 43.

  The recording head 20 includes a large number of recording wires (not shown), and an ink ribbon is positioned in front of the recording wires in the protruding direction. While the recording head 20 travels in the main scanning direction together with the carriage 21, the recording wire protrudes and strikes the ink ribbon, and the ink on the ink ribbon is transported between the platen 23 and the recording head 20. An image including characters is recorded on the sheet by being attached to the sheet.

  In the recording operation by the recording head 20, one line is recorded by the recording wire of the recording head 20 while the carriage 21 travels leftward or rightward in the main scanning direction of FIGS. 1 to 3, and this one line is recorded. Each time the first sheet transport mechanism unit 27 or the second sheet transport mechanism unit 30 transports a sheet by a predetermined length (for a normal line interval), these operations are repeated.

  As shown in FIG. 4, the discharge unit 13 includes a discharge roller 46 that is rotatably integrated with a roller shaft 45, and the sheet recorded by the recording head 20 is moved out of the printer 10 by the rotation of the discharge roller 46. Discharged.

  A release lever 47 is provided outside the right side frame 19, and a transmission gear (not shown) that transmits the driving force of the sheet conveying motor 35 by the operation of the release lever 47 is provided on the rear side of the printer body 11. The push tractor unit 12 is mounted so that it can mesh with or disengage from a tractor drive gear (not shown) that drives the tractor drive shaft 37 of the push tractor unit 12. When the transmission gear is engaged with the tractor drive gear, the first driven roller 25 of the first sheet transport mechanism 27 is separated from the platen 23 by the action of the cam 49 formed on the release shaft 48 shown in FIG. A continuous sheet as a sheet is supplied from the push tractor unit 12 mounted on the rear side of the printer main body 11 to the platen 23 and conveyed.

  Further, when the transmission gear is separated from the tractor drive gear by the operation of the release lever 47, the first driven roller 25 of the first sheet transport mechanism 27 is brought into contact with the platen 23 and rotates by the action of the cam 49, A sheet as a sheet is supplied from a sheet guide 24 of the first sheet transport mechanism 27 to the platen 23 from a sheet supply guide or the like (not shown).

  An adjustment lever 50 is provided outside the left side frame 18, and the carriage shaft 31 is configured to be separated or accessible from the platen 23 by the operation amount of the adjustment lever 50 according to the operation amount. Therefore, the platen gap between the recording head 20 mounted on the carriage 21 supported by the carriage shaft 31 and the platen 23 can be adjusted by manual operation of the adjustment lever 50 according to the sheet thickness or the like.

  The drive control of the platen 23, the push tractor unit 12 and the discharge unit 13, the traveling control of the carriage 21, and the control of the recording operation by the recording wire of the recording head 20 are performed by the control board unit 51 as a control device. . The control board 51 is disposed below the rear side of the printer main body 11, for example.

  FIG. 5 is a perspective view of the printer main body 11 as viewed from the direction of the arrow α in FIG. 3 (lower front side of the printer main body 11). 6 to 8 are schematic sectional views taken along line VI-VI in FIG.

  As shown in FIGS. 6 to 8, the control board 51 (FIG. 4) and the recording head 20 are connected by a flexible flat cable 61 (FFC) as a signal cable used to transmit a drive signal to the recording head 20. Connected. The control board 51 transmits a drive signal to the recording head 20 via the flexible flat cable 61. As a result, the recording head 20 records an image on the sheet by causing the recording wire to protrude based on the drive signal.

  Specifically, the flexible flat cable 61 extends from the control board 51 (FIG. 4) and is routed around the main body frame (the left side frame 18 or the right side frame 19, for example, the right side frame 19 and the base frame 15). After being mounted, it is connected to the recording head 20. Specifically, the flexible flat cable 61 routed from the right side frame 19 into the printer main body 11 has one end 61A connected to the recording head 20, and the carriage 21 (specifically, FIGS. 4 and 6). As shown in FIG. 8, the other end 61 </ b> B is held by the base frame 15 facing the carriage 21 as a cable holding portion. The holding portion 21 </ b> E) holds the flexible flat cable 61 formed in the extending portion 21 </ b> C. It is held using a cable holder 62. That is, the flexible flat cable 61 is bent into the substantially U shape from the position of the cable holder 62, bent to the right side frame 19 side by the bent portion 61 </ b> C of the flexible flat cable 61, and connected to the recording head 20. The cable holder 62 is attached to substantially the center in the longitudinal direction of the base frame 15 (left and right direction in which the carriage 21 slides). That is, the other end 61 </ b> B of the flexible flat cable 61 is held at the approximate center in the longitudinal direction of the base frame 15.

  As shown in FIGS. 6 and 7, the flexible flat cable 61 has a substantially U-shaped bent portion 61 </ b> C in contact with the ribbon cassette 44 and the base frame 15, and is reciprocated between the recording head 20 and the carriage 21. Sometimes guided by the ribbon cassette 44 and the base frame 15. As shown in FIG. 8, when the carriage 21 moves to the vicinity of the right side frame 19, the flexible flat cable 61 contacts the base frame 15 without contacting the ribbon cassette 44. 15 is guided.

  Incidentally, the position of the bent portion 61 </ b> C of the flexible flat cable 61 moves as the carriage 21 moves. Specifically, when the carriage 21 moves in a direction approaching the bent portion 61C (the arrow X1 direction in FIG. 6), the bent portion 61C moves in a direction away from the cable holder 62, and the carriage 21 moves from the bent portion 61C. When moving away (in the direction of arrow X2 in FIG. 6), the bent portion 61C moves in a direction approaching the cable holder 62. Here, the bent portion 61C moves between the cable holder 62 and one side frame (for example, the right side frame 19).

  Since one end 61 </ b> A of the flexible flat cable 61 is held on the carriage 21, a reaction force due to the bending of the flexible flat cable 61 acts. The reaction force acting on the carriage 21 increases as the bent portion 61C moves away from the cable holder 62, that is, as the bent portion 61C approaches the carriage 21.

  More specifically, the reaction force of the flexible flat cable 61 acts on the sliding contact portion 21D of the carriage 21 in the direction of arrow F, which is the direction opposite to the front frame 16, as shown in FIG. That is, when the reaction force by the flexible flat cable 61 is small, the carriage 21 does not float in the direction of the arrow F due to the weight of the recording head 20 and the carriage 21, but the reaction force by the flexible flat cable 61 (FIG. 6) is excessive. Since there are gaps between the carriage bush 21B of the carriage 21 and the carriage shaft 31 and between the sliding contact portion 21D of the carriage 21 and the front frame 16, the sliding contact portion 21D of the carriage 21 is increased. Floats in the direction of arrow F (FIG. 4), and the leading edge of the recording head 20 collides with the sheet conveyed to the platen 23 via the ink ribbon, causing ink stains on the sheet.

  Furthermore, it is difficult to set a belt driving pulley (not shown) and a belt driven pulley (not shown) so that the timing belt 42 is completely parallel to the carriage shaft 31. The direction of the driving force acting on 21 and the axial direction of the carriage shaft 31 are not completely parallel but slightly shifted, and the carriage 21 tilts and slides while the carriage bush 21B and the carriage shaft 31 rub against each other. Will be. When the carriage 21 is accelerated or decelerated abruptly, the frictional resistance between the carriage bush 21B and the carriage shaft 31 changes abruptly, the timing belt 42 is bent, and this bending force is transmitted to the carriage 21. If the reaction force of the flexible flat cable 61 becomes excessive in the state where the bending force of the timing belt 42 is applied to the carriage 21, the carriage 21 jumps up, and the leading end of the recording head 20 is further applied to the platen 23 via the ink ribbon. It becomes easy to collide with the conveyed sheet.

  In the first embodiment, in the end region P of the base frame 15 on the side where the bent portion 61C of the flexible flat cable 61 moves (in the first embodiment, the right side frame 19 side starting from the cable holder 62), A depression 63 is provided. More specifically, the depression 63 is inclined so that the depression amount gradually becomes deeper in the direction in which the bent portion 61C of the flexible flat cable 61 moves with the cable holder 62 of the base frame 15 as a starting point. .

  Thus, the carriage 21 moves in the direction of the right side frame 19, and the bent portion 61 </ b> C of the flexible flat cable 61 approaches the right side frame 19 and moves to the recess 63 in the end region P of the base frame 15. In this case, the curvature of the bent portion 61C is increased, and the reaction force of the flexible flat cable 61 acting on the carriage 21 is reduced. Accordingly, the carriage 21 can be prevented from being lifted by the reaction force of the flexible flat cable 61, and the front end of the recording head 20 can be prevented from colliding with the sheet conveyed to the platen 23 via the ink ribbon. Therefore, it is possible to suppress the occurrence of ink stains on the sheet.

  In particular, in the first embodiment, the dent portion 63 gradually increases in depth in the direction in which the bent portion 61C of the flexible flat cable 61 moves, starting from the cable holder 62 of the base frame 15 (see FIG. In the first embodiment, the inclination of the bent portion 61C gradually increases as the right side frame 19 approaches the right side frame 19, so that the curvature of the bent portion 61C gradually increases as the bent portion 61C approaches the right side frame 19. Therefore, the reaction force of the flexible flat cable 61 that acts on the carriage 21 can be suppressed to a predetermined reaction force that does not lift the carriage 21. That is, the inclination angle of the recess 63 with respect to the flat portion of the base frame 15 is set to a predetermined inclination angle such that the reaction force of the flexible flat cable 61 is equal to or less than the predetermined reaction force.

  In addition, since the curvature of the bent portion 61C of the flexible flat cable 61 is increased, the frictional resistance when the flexible flat cable 61 is brought into sliding contact with the ribbon cassette 44 is reduced, and the flexible flat cable 61 is caused to friction by the flexible flat cable 61. There is no need to apply protective tape to prevent damage. Therefore, since it is not necessary to apply a protective tape to the flexible flat cable 61, an increase in reaction force due to the bent portion 61C of the flexible flat cable 61 resulting from applying the protective tape can be suppressed. Furthermore, since it is not necessary to apply a protective tape to the flexible flat cable 61, the process of attaching the protective tape can be omitted, and the assembly time of the printer 10 can be shortened. In addition, since it is not necessary to provide a spring or the like that biases the carriage 21 in the direction opposite to the reaction force caused by the bending of the flexible flat cable 61, the cost can be reduced.

  In addition, the depression 63 is provided only in the end region P of the base frame 15. If the entire base frame 15 is depressed, the second sheet conveying mechanism 30 is manually inserted from the front side of the printer main body 11. This is because when a sheet (for example, a small sheet such as a postcard) is supplied, the user's hand hits the base frame 15 and it becomes difficult to supply the sheet to the second sheet transport mechanism 30. In particular, when a sheet is manually fed to the second sheet transport mechanism unit 30, the user's hand is inserted into a substantially central portion of the printer body 11 in the digit direction (left-right direction). Therefore, the depression 63 is provided in the region avoiding the substantially central portion of the printer main body 11 in the digit direction (left-right direction), that is, in the end region P of the base frame 15. Accordingly, the depression 63 of the base frame 15 does not get in the way when the sheet is manually fed.

  Further, since the recess 63 of the base frame 15 is inclined so that the recess becomes gradually deeper in the direction of the right side frame 19, which is the direction in which the bent portion 61 </ b> C of the flexible flat cable 61 moves, the carriage shaft 31. The lubricating oil dripping from the flank will escape to the right side frame 19 side. In the first embodiment, an oil recovery portion 64 that recovers the lubricating oil of the carriage shaft 31 is provided in the vicinity of the side frame of the recess 63 (in the first embodiment, the right side frame 19). The oil recovery unit 64 includes an oil absorber (for example, a sponge) that absorbs the lubricating oil, and the lubricating oil dripping from the carriage shaft 31 is absorbed by the oil absorber. As a result, the lubricating oil dripping from the carriage shaft 31 is collected by the oil collecting section 64, so that the lubricating oil does not drip from the base frame 15 to the sheet side and is supplied to the lower side of the front side of the printer body 11. Can be prevented from being contaminated with lubricating oil.

[2] Second Embodiment The second embodiment is different from the first embodiment in that the recess is recessed stepwise at the end of the base frame extending in a flat shape. FIG. 9 is a perspective view showing a main body frame of the printer main body in the second embodiment, and FIG. 10 is a perspective view of the main body frame of the printer main body as viewed from the direction of arrow β in FIG. It is. The right side frame is not shown. Hereinafter, in this 2nd Embodiment, the part similar to the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

  As shown in FIGS. 9 and 10, the end of the base frame 15 on the side where the bent portion 61C of the flexible flat cable 61 moves (in the second embodiment, the side of the right side frame not shown starting from the cable holder 62). A recessed portion 63A is formed in the partial region. The recessed portion 63A is formed in a stepped shape at the end of the base frame 15 extending in a flat shape.

  Thus, when the carriage 21 moves in the direction of the right side frame 19 and the bent portion 61C of the flexible flat cable 61 approaches the right side frame 19 and moves to the recessed portion 63A of the base frame 15, the bent portion 61C The curvature is increased, and the reaction force of the flexible flat cable 61 acting on the carriage 21 is reduced. Accordingly, the carriage 21 can be prevented from being lifted by the reaction force of the flexible flat cable 61, and the front end of the recording head 20 can be prevented from colliding with the sheet conveyed to the platen 23 via the ink ribbon. Therefore, as in the first embodiment, it is possible to suppress the occurrence of ink stains on the sheet.

  Further, as in the first embodiment, the curvature of the bent portion 61C of the flexible flat cable 61 is increased, so that the frictional resistance when the flexible flat cable 61 is in sliding contact with the ribbon cassette 44 is reduced. There is no need to attach a protective tape to 61 to prevent damage to the flexible flat cable 61 due to friction. Therefore, since it is not necessary to apply a protective tape to the flexible flat cable 61, an increase in reaction force due to the bent portion 61C of the flexible flat cable 61 resulting from applying the protective tape can be suppressed. Furthermore, since it is not necessary to apply a protective tape to the flexible flat cable 61, the process of attaching the protective tape can be omitted, and the assembly time of the printer 10 can be shortened. In addition, since it is not necessary to provide a spring or the like that biases the carriage 21 in the direction opposite to the reaction force caused by the bending of the flexible flat cable 61, the cost can be reduced.

[Modification]
[3.1] First Modified Example In the first embodiment, the bent portion 61C moves from the cable holder 62 to the end region of the base frame 15 on the side where the bent portion 61C of the flexible flat cable 61 moves. In the case where a recess 63 that is inclined so as to gradually increase the amount of recess is provided in the direction in which the oil is recovered, and an oil recovery portion 64 that recovers the lubricating oil of the carriage shaft 31 is provided in the vicinity of the right side frame 19 of the recess 63. However, as shown in the schematic cross-sectional view of the printer main body 11 shown in FIG. 11, the cable holder 62 is the starting point on the side opposite to the side where the bent portion 61C moves (the side where the bent portion 61C does not move). A recess 65 is provided so as to be gradually deepened in the direction of the left side frame 18, and the side frame (for example, the recess 65) is provided in the recess 65. For example, an oil recovery portion 66 for recovering the lubricant oil of the carriage shaft may be provided in the vicinity of the left side frame 18). As a result, it is possible to more effectively collect the lubricating oil dripping from the carriage shaft.

[3.2] Second Modification In the first embodiment, the case where the oil recovery portion 64 that recovers the lubricating oil of the carriage shaft 31 is provided in the vicinity of the right side frame 19 of the recess portion 63 has been described. As shown in the schematic cross-sectional view of the printer main body 11 shown in FIG. 12, an oil recovery portion 64 </ b> A for recovering the lubricant oil of the carriage shaft may be provided on the right side frame 19 corresponding to the bottom of the recess portion 63. Also by this, it is possible to collect the lubricating oil dripping from the carriage shaft.

  The oil recovery part 64A is preferably detachably attached to the right side frame 19. This improves the maintainability.

[3.3] Third Modification In addition, in the second embodiment, an oil recovery unit may be provided in the recess 63A, as in the first embodiment. As a result, the lubricating oil dripping from the carriage shaft can be recovered.

1 is a perspective view showing a printer main body of a dot impact printer to which a first embodiment of a recording apparatus according to the present invention is applied. 2 is a perspective view illustrating a configuration of a printer main body of a dot impact printer. FIG. 2 is a perspective view illustrating a configuration of a printer main body of a dot impact printer. FIG. It is sectional drawing of a printer main body. FIG. 4 is a perspective view of the printer body viewed from the direction of arrow α in FIG. 3. FIG. 4 is a schematic cross-sectional view taken along line VI-VI of the printer main body of FIG. 2. FIG. 4 is a schematic cross-sectional view taken along line VI-VI of the printer main body of FIG. 2. FIG. 4 is a schematic cross-sectional view taken along line VI-VI of the printer main body of FIG. 2. It is a perspective view which shows the main body frame of the printer main body in 2nd Embodiment. FIG. 10 is a perspective view of a main body frame of the printer main body as viewed from the direction of arrow β in FIG. 9. 2 is a schematic cross-sectional view showing a printer body. 2 is a schematic cross-sectional view showing a printer body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Printer (recording device), 15 ... Base frame (frame), 20 ... Recording head, 21 ... Carriage, 21B ... Carriage bush, 23 ... Platen, 31 ... Carriage shaft, 42 ... Timing belt, 44 ... Ribbon cassette, 61 ... flexible flat cable (signal cable), 61A ... one end, 61B ... the other end, 61C ... bent part, 62 ... cable holder (cable holding part), 63, 63A ... hollow part, 64, 64A ... oil recovery part, P ... End area.

Claims (4)

A signal cable for transmitting a drive signal to the recording head; one end of the signal cable is held by a carriage on which the recording head is mounted, and the other end forms a bent portion with the one end. In a recording apparatus which is held by a frame facing the carriage and the position of the bent portion of the signal cable moves with the movement of the carriage,
The recording apparatus according to claim 1, wherein a recessed portion into which the bent portion enters is provided in an end region of the frame on a side where the bent portion of the signal cable moves. The recording apparatus according to claim 1,
The recording apparatus according to claim 1, wherein the hollow portion of the frame is inclined so that the hollow amount gradually increases in a direction in which the bent portion of the signal cable moves with the cable holding portion of the frame as a starting point. The recording apparatus according to claim 1,
The recording apparatus according to claim 1, wherein the recessed portion of the frame is recessed in a step shape at an end portion of the frame extending in a flat shape. The recording apparatus according to any one of claims 1 to 3,
The recording apparatus according to claim 1, wherein an oil recovery portion that recovers the lubricating oil of the carriage shaft is provided in the recess portion of the frame.

Images