JP2005066966A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus which enables the high-precision setting of a recording medium in double-side recording. <P>SOLUTION: This recording apparatus is equipped with a positioning means 210 which abuts on a leading end of the recording medium in the setting of the recording medium, and which reduces recording misregistration on front and back sides by positioning the recording medium. Thus, since the recording medium can be positioned on the basis of the leading end of the recording medium, the recording medium can be set with a high degree of accuracy. Furthermore, since a side end surface of the recording medium is not deformed by being turned up in recording and conveyance even if skew slightly occurs in the setting of the recording medium, the recording accuracy of the front and back sides of the recording medium can be enhanced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording apparatus capable of double-sided recording, in which a recording medium is transported and recorded on the front surface, and then the reversed recording medium is transported and recorded on the back surface.

  Some large-sized printers, which are one of conventional recording apparatuses, can record on both sides of a cut sheet as a recording medium. Such a printer is usually configured to record once on the front side of the cut sheet and then record on the back side of the cut sheet by the user turning over the cut sheet. As described above, since the user needs to set the cut sheet during the double-sided recording, the recording position on the front and back surfaces of the cut sheet is likely to be shifted.

  For this reason, printers have been developed in which a marking is attached on the recording table to align the leading edge or the right or left edge of the cut sheet. However, even in such a printer, there is a limit to matching the leading edge or the right or left edge of the cut sheet with the marking with high accuracy. On the other hand, a printer that is not used for double-sided recording but has a guide for aligning the right edge of the cut sheet on the recording table has been proposed, and this guide is used to set the cut sheet for double-sided recording. It is also possible to use it.

Japanese Patent Laid-Open No. 5-32357 JP 2002-137851 A JP-A-11-130299

  Among the printers provided with the above-described conventional guides, the printers disclosed in Patent Documents 1 and 2 cause the right end surface of the cut sheet to bend by the guide during recording conveyance when a slight skew occurs during the setting of the cut sheet. There is a risk of deformation. On the other hand, in the printer disclosed in Patent Document 3, raising is added to the guide surface that comes into contact with the cut sheet in order to avoid such twisting. However, adding such raising to the guide is expensive in cost, has a problem in durability, and cannot be expected to be effective for thin paper or film that is weak.

  The present invention has been made in view of the various problems as described above, and an object of the present invention is to provide a recording apparatus capable of setting a recording medium at the time of double-sided recording with high accuracy.

  In order to achieve the above object, the recording apparatus of the present invention is a recording apparatus that transports a recording medium and records it on the front surface, and then transports the recording medium turned upside down and records it on the back surface. It is characterized in that it is equipped with positioning means that sometimes abuts against the leading edge of the recording medium and positions the recording medium to reduce the recording position deviation between the front and back surfaces. As a result, the recording medium can be positioned with reference to the leading edge of the recording medium, so that the recording medium can be set with high accuracy. Further, even when a slight skew occurs during setting of the recording medium, The side end surface of the recording medium is not bent and deformed, and the recording accuracy of the front and back surfaces of the recording medium can be improved.

  The positioning means is arranged to be movable up and down on the recording table, and is raised and protrudes from the recording table, and is lowered and stored in the recording table. As a result, since the positioning means can be retracted during recording on the recording medium, unnecessary interference between the positioning means and the recording medium can be prevented. Further, the positioning means is characterized in that it moves up and down by a cam mechanism or a link mechanism as it moves in the conveyance orthogonal direction. Thereby, since the vertical movement of the positioning means can be realized with a simple mechanism, the cost can be reduced.

  The positioning means is arranged to be swingable in the transport direction on the recording table, swings to one side, protrudes from the recording table, swings to the other side, and is stored in the recording table. It is characterized by that. As a result, since the positioning means can be retracted during recording on the recording medium, unnecessary interference between the positioning means and the recording medium can be prevented.

  Further, the positioning means is arranged in a cutter groove provided in the recording table. Thereby, since the positioning means can be provided in the existing member, it is possible to make the structure simpler and more inexpensive in terms of cost. Further, the positioning means is installed so as to be able to contact a part of the tip of the recording medium. Accordingly, for example, by providing the positioning means only on the right end side of the recording table, the configuration can be simplified and the cost can be reduced.

  Further, the positioning means is characterized in that it is formed on a pressing member that is movable in the orthogonal direction of conveyance and that presses both side edges of the recording medium. Thereby, since the positioning means can be provided in the existing member, it is possible to make the structure simpler and more inexpensive in terms of cost. The positioning means is characterized in that an antistatic material that can be grounded is attached. Thereby, the setting of the recording medium and the discharge of static electricity can be performed simultaneously.

  FIG. 1 is a perspective view showing a configuration example of an ink jet printer that is one of recording apparatuses according to an embodiment of the present invention, FIG. 2 is a perspective view showing an internal configuration example of the main part, and FIG. FIG. The ink jet printer 100 shown in FIGS. 1 to 3 is a large-sized printer that can record on a relatively large size cut paper such as JIS standard A1 size or JIS standard B1 size or roll paper having the width of the paper. is there. In the ink jet printer 100, a recording unit 120, a paper discharge unit 130, and a cut paper and roll paper positioning unit 200, which is a characteristic part of the present invention, are disposed in a main body 110, and legs that support the main body 110. A roll paper feeding unit 150 is disposed between the units 140.

  As shown in FIGS. 1 to 3, the main body 110 includes a housing 111 made of plastic or sheet metal that covers the recording unit 120 and the paper discharge unit 130. As shown in FIGS. 1 to 3, the housing 111 is provided with an upper lid 112 and a front lid 113 made of translucent or transparent plastic or sheet metal so that the upper surface and the front surface can be opened.

  As shown in FIGS. 1 to 3, the upper portion of the upper lid 112 is rotatably supported, and the upper lid 112 is opened and closed when the user holds the front portion and pushes it up or down. The user can open the upper part of the recording unit 120 and the paper discharge unit 130 by opening the upper cover 112, so that the maintenance work of the recording head 121, the carriage 122, etc. and the paper jam during recording or paper discharge, etc. It is possible to easily perform a paper transport error canceling operation.

  As shown in FIGS. 1 to 3, the lower part of the front lid 113 is rotatably supported, and is opened and closed when the user holds down the upper part or pushes it up or pushes it up. By opening the front lid 113, the user can largely open the lower part of the recording unit 120 and the paper discharge unit 130, so that it is possible to easily perform a paper transport error canceling operation such as a paper jam during paper feeding. it can.

  As shown in FIGS. 1 and 2, an ink cartridge holder 160 having a holder main body 161 for storing and holding the ink cartridges 10 for each color and a cover 162 for covering the front surface of the main body 110 as viewed from the front side. Is arranged. The lower portion of the cover 162 is supported so as to be rotatable with respect to the holder main body 161, and is opened and closed when the user holds down the upper portion and pushes it down or pushes it up. Since the user can open the holder main body 161 by opening the cover 162, the user can easily replace the ink cartridge 10 or the like.

  Furthermore, as shown in FIGS. 1 and 2, an operation panel 170 for the user to operate recording control and the like is disposed on the upper right side when viewed from the front side of the main body 110. The operation panel 170 is provided with a liquid crystal screen and various buttons so that the user can operate the buttons while checking the liquid crystal screen. Since the user can perform a reliable operation by visual recognition, an operation error, an operation error, and the like can be eliminated.

  As shown in FIGS. 2 and 3, the recording unit 120 includes a carriage 122 on which the recording head 121 is mounted, a flexible flat cable (hereinafter referred to as a flexible flat cable) that electrically connects the recording head 121 and a control unit (not shown) for performing recording. , FFC) 123, and an ink tube 124 that connects the recording head 121 and the ink cartridge 10 containing ink. Furthermore, the recording unit 120 includes a paper feed roller 125 that conveys cut paper and roll paper in the sub-scanning direction, a driven roller 126 thereof, a recording table 129 disposed below the recording head 121, and lifts of the cut paper and roll paper. A paper suction means (not shown) for preventing the above is provided.

  The recording head 121 includes a black ink recording head that discharges black ink and a plurality of color ink recording heads that discharge ink of each color such as dark yellow, yellow, light cyan, cyan, light magenta, and magenta. . The recording head 121 is provided with a pressure generation chamber and a nozzle opening connected to the pressure generation chamber. By storing ink in the pressure generation chamber and pressurizing it with a predetermined pressure, control is performed from the nozzle opening toward cut paper or roll paper. Ink droplets of a specified size are ejected.

  As shown in FIG. 2, the carriage 122 is mounted on a rail 127 provided in the main scanning direction via a bearing and is connected to a carriage belt 128. When the carriage belt 128 is actuated by a carriage drive device (not shown), the carriage 122 is entrained in the movement of the carriage belt 128 and guided by the rail 127 to reciprocate. One end of the FFC 123 is connected to the connector of the control unit and the other end is connected to the connector of the recording head 121, and a recording signal is sent from the control unit to the recording head 121.

  The ink tubes 124 are provided for the inks of the respective colors, and one end of each ink tube is connected to the corresponding ink cartridge 10 via an ink pressure supply unit (not shown), and the other end is recorded for each corresponding color. It is connected to the head 121. The ink tube 124 is configured to send ink of each color pressurized by the ink pressure supply means from the ink cartridge 10 to the recording head 121.

  The paper feed roller 125 is driven to rotate forward and backward by a driving force transmitted from a motor (not shown). The driven roller 126 is pressed against the paper feed roller 125 by an urging member such as a spring, and rotates forward and backward following the forward / reverse rotation drive of the paper feed roller 125. The paper feed roller 125 and its driven roller 126 sandwich and feed the cut paper or roll paper to be fed.

  2 and 3, the paper discharge unit 130 conveys cut paper or roll paper in the sub-scanning direction and discharges the paper, and its driven roller 132, and discharges the cut paper or roll paper. A guide plate 134 for guiding to the opening 133, a cutter 135 for cutting roll paper, a cutter groove 136, and the like are provided. The paper discharge roller 131 is driven to rotate forward and backward by a driving force transmitted from the motor via the paper feed roller 125. The driven roller 132 is pressed against the paper discharge roller 131 by a biasing member such as a spring, and rotates forward following the forward rotation drive of the paper discharge roller 131. The paper discharge roller 131 and its driven roller 132 sandwich the conveyed roll paper and send it to the guide plate 134, and discharge the paper from the paper discharge port 133 to the outside.

  The cutter 135 is arranged so that the blade edge faces downward and can be moved up and down in the vertical direction and movable in the main scanning direction. The cutter 135 is moved up and down by, for example, a solenoid and moved in the main scanning direction by, for example, a belt mechanism. Note that the cutter 135 may be mounted on the carriage 122 and moved in the main scanning direction together with the carriage 122. The cutter groove 136 is provided on the recording table 129 immediately below the cutter 135 so as to extend in the main scanning direction. The cutter groove 136 is formed in such a size that the cutting edge protruding from the lower surface of the roll paper can enter so as not to damage the recording table 129 when the cutter 135 cuts the roll paper in the width direction.

  The positioning means 200 is disposed so as to be able to protrude and house with respect to the recording table 129. The positioning means 200 projects from the recording table 129 and abuts against the leading edge of the cut paper or roll paper when positioning the cut paper or roll paper for double-sided recording, and positions the cut paper or roll paper. . The details of the positioning means 200 which is a characteristic part of the present invention having such a function will be described below with reference to the drawings.

  FIG. 4 is a view showing the positioning means according to the first embodiment. As shown in FIG. 4A, the positioning means 210 is fixed to a rectangular plate-like positioning plate 211 disposed in a cutter groove 136 formed in the recording table 129 and an inner wall of the cutter groove 136. Two cylindrical cam pins 212 are provided. The positioning plate 211 is formed such that two L-shaped legs 213 protrude from the lower end, and a protrusion 214 for a user to pick and operate with a finger protrudes from the upper right end. Between the lower end of the positioning plate 211 and the two legs 213, two L-shaped cam grooves 215 into which the two cam pins 212 are fitted are formed.

  In the positioning means 210 having such a configuration, normally, as shown in FIG. 4A, the positioning plate 211 is housed in the cutter groove 136, that is, the cam pin 212 is positioned above the cam groove 215. The upper end of the positioning plate 211 is retracted from the upper end of the cutter groove 136. When performing double-sided recording, the user picks up the protrusion 214 with a finger and raises the positioning plate 211, and then horizontally moves it to the left in the conveyance orthogonal direction.

  As a result, as shown in FIG. 4B, the positioning plate 211 is lifted from the cutter groove 136, that is, the cam pin 212 is positioned below the cam groove 215, and the upper end of the positioning plate 211 is positioned at the cutter groove 136. It protrudes from the upper end. At this time, since the cam pin 212 is fitted into the recess 213 a formed in the foot 213, the upper end of the positioning plate 211 is fixed in a state of protruding from the upper end of the cutter groove 136.

  Subsequently, the user positions the cut paper or roll paper by bringing the leading end of the cut paper or roll paper into contact with the upper end of the positioning plate 211. Then, the upper end of the positioning plate 211 is retracted from the upper end of the cutter groove 136 and recorded on the surface of the cut sheet or roll sheet. Thereafter, the upper end of the positioning plate 211 is again protruded from the upper end of the cutter groove 136, the cut sheet is turned over, and the roll sheet is cut and turned over.

  Then, the front end of the cut paper or roll paper is again brought into contact with the upper end of the positioning plate 211 to position the cut paper or roll paper. Then, the upper end of the positioning plate 211 is again retracted from the upper end of the cutter groove 136 and recorded on the back surface of the cut paper or roll paper. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  FIG. 5 is a view showing positioning means according to the second embodiment. As shown in FIG. 5A, the positioning means 220 is fixed to the rectangular plate-shaped positioning plate 221 disposed in the cutter groove 136 formed in the recording table 129 and the inner wall of the cutter groove 136. Two cylindrical cam pins 222 are provided. The positioning plate 221 has two Z-shaped cam grooves 225 into which the two cam pins 222 are fitted, and is formed so that a protrusion 224 for the user to pick and operate with a finger protrudes from the upper right end. .

  In the positioning means 220 having such a configuration, normally, as shown in FIG. 5A, the positioning plate 221 is housed in the cutter groove 136, that is, the cam pin 222 is positioned at the upper left end of the cam groove 225. Thus, the upper end of the positioning plate 221 is retracted from the upper end of the cutter groove 136. When performing double-sided recording, the user picks up the protrusion 224 with a finger, moves the positioning plate 221 horizontally to the left in the transport orthogonal direction, and then raises it, and further moves it horizontally to the left in the transport orthogonal direction. 5B, the positioning plate 221 is lifted from the cutter groove 136, that is, the cam pin 222 is positioned at the lower right end of the cam groove 225, and the upper end of the positioning plate 221 is the cutter groove 136. It protrudes from the top of the.

  Subsequently, the user positions the cut paper or roll paper by bringing the leading end of the cut paper or roll paper into contact with the upper end of the positioning plate 221. Then, the upper end of the positioning plate 221 is retracted from the upper end of the cutter groove 136 and recorded on the surface of the cut paper or roll paper. Thereafter, the upper end of the positioning plate 221 is protruded from the upper end of the cutter groove 136 again, the cut paper is turned over, and the roll paper is cut and turned over.

  Then, the tip of the cut paper or roll paper is again brought into contact with the upper end of the positioning plate 221 to position the cut paper or roll paper. Then, the upper end of the positioning plate 221 is again retracted from the upper end of the cutter groove 136 and recorded on the back surface of the cut paper or roll paper. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  FIG. 6 is a diagram showing positioning means according to the third embodiment. As shown in FIG. 6A, the positioning unit 230 includes a rectangular plate-shaped positioning plate 231 disposed in a cutter groove 136 formed in the recording table 129, a lower portion of the positioning plate 231 and a cutter. Two rod-like links 232 that are rotatably attached to the inner wall of the groove 136 are provided. The positioning plate 221 is formed such that a protrusion 234 for a user to pick and operate with a finger protrudes from the upper right end.

  In the positioning means 230 having such a configuration, normally, as shown in FIG. 6A, the positioning plate 231 is housed in the cutter groove 136, that is, the link 232 is inclined and the upper end of the positioning plate 231 is tilted. Is retracted from the upper end of the cutter groove 136. When double-sided recording is performed, the user picks the protrusion 234 with a finger and moves the positioning plate 231 to the left in the conveyance orthogonal direction. As a result, as shown in FIG. 6B, the positioning plate 231 is lifted from the cutter groove 136, that is, the link 232 stands up, and the upper end of the positioning plate 231 protrudes from the upper end of the cutter groove 136. Become.

  Subsequently, the user brings the leading end of the cut paper or roll paper into contact with the upper end of the positioning plate 231 to position the cut paper or roll paper. Then, the upper end of the positioning plate 231 is retracted from the upper end of the cutter groove 136 and recorded on the surface of the cut sheet or roll sheet. Thereafter, the upper end of the positioning plate 231 is protruded from the upper end of the cutter groove 136 again, the cut paper is turned over, and the roll paper is cut and turned over.

  Then, the front end of the cut paper or roll paper is again brought into contact with the upper end of the positioning plate 231 to position the cut paper or roll paper. Then, the upper end of the positioning plate 231 is again retracted from the upper end of the cutter groove 136 and recorded on the back surface of the cut sheet or roll sheet. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  FIG. 7 is a view showing positioning means according to the fourth embodiment. As shown in FIGS. 7A and 7B, the positioning means 240 includes a rectangular plate-shaped positioning plate 241 disposed in a cutter groove 136 formed in the recording table 129, and the positioning plate 241. Are provided with two torsion coil springs 242 respectively disposed at both ends thereof. The positioning plate 241 has a lower end pivotally supported by the bottom surface of the cutter groove 136 and is disposed so as to be swingable in the transport direction. The positioning plate 241 has two rectangular holes 243 into which one ends of the two torsion coil springs 242 are inserted, and a protrusion 244 for a user to pick and operate with a finger protrudes from the upper right end. Is formed. The two torsion coil springs 242 are engaged with two cylindrical pins 245 and 246 projecting from the inner wall near the both ends of the cutter groove 136 at the center and the other end, respectively, and function as a bi-stable spring.

  In the positioning means 240 having such a configuration, normally, as shown by the solid lines in FIGS. 7A and 7B, the positioning plate 241 is housed in the cutter groove 136, that is, in FIG. 7B. The upper end of the positioning plate 241 is retracted from the upper end of the cutter groove 136. At this time, since the positioning plate 241 is pressed by the torsion coil spring 242, the upper end of the positioning plate 241 is fixed in a state of being retracted from the upper end of the cutter groove 136.

  When double-sided recording is performed, the user picks the protrusion 244 with a finger and swings the positioning plate 241 upstream in the transport direction. 7A and 7B, the positioning plate 241 protrudes from the cutter groove 136, that is, the upstream side in the conveying direction shown in FIG. The upper end of the plate 241 protrudes from the upper end of the cutter groove 136. At this time, the positioning plate 241 is pressed by the torsion coil spring 242, so that the upper end of the positioning plate 241 protrudes from the upper end of the cutter groove 136.

  Subsequently, the user brings the leading end of the cut paper or roll paper into contact with the upper end of the positioning plate 241 to position the cut paper or roll paper. Then, the upper end of the positioning plate 241 is retracted from the upper end of the cutter groove 136 and recorded on the surface of the cut sheet or roll sheet. Thereafter, the upper end of the positioning plate 241 is protruded from the upper end of the cutter groove 136 again, the cut paper is turned over, and the roll paper is cut and turned over.

  Then, the front end of the cut paper or roll paper is again brought into contact with the upper end of the positioning plate 241 to position the cut paper or roll paper. Then, the upper end of the positioning plate 241 is again retracted from the upper end of the cutter groove 136 and recorded on the back surface of the cut paper or roll paper. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  FIG. 8 is a diagram showing positioning means according to the fifth embodiment. The positioning means 250 is formed integrally with a paper presser 137 that presses both side edges of cut paper or roll paper disposed on both sides of the recording table 129. In the figure, only one side is shown. The positioning means 250 is formed as a paper pressing portion 137 by bending one side of the main body portion 251 made of a substantially rectangular sheet metal in the conveyance orthogonal direction, and is formed as a positioning portion 252 by bending the opposite side in the conveyance direction. .

  The remaining opposite side of the main body 251 is wound around two guide bars 253 made of plastic or metal. The two guide bars 253 including the winding portion of the main body 251 are fitted in two parallel grooves 254 formed in the recording table 129 in the conveyance orthogonal direction. Thereby, the positioning means 250 can move on the recording table 129 in the conveyance orthogonal direction.

  The positioning means 250 having such a configuration is normally positioned in accordance with a position where the paper pressing portion 137 can press both side edges of the cut paper or roll paper, that is, according to the width of the cut paper or roll paper. . When performing double-sided recording, the user presses the main body 251 in parallel so that the positioning unit 252 can be in contact with the front end of the cut paper or roll paper, that is, the width of the cut paper or roll paper is narrower. Move along the groove 254.

  Subsequently, the user positions the cut paper or roll paper by bringing the leading end of the cut paper or roll paper into contact with the positioning unit 252. Then, so that the positioning unit 252 does not interfere with the cut paper or the roll paper, the user presses the main body 251 to retract along the parallel groove 254 and records it on the surface of the cut paper or the roll paper. After that, the user pushes the main body 251 and moves it along the parallel grooves 254 so that the positioning unit 252 can come into contact with the leading edge of the cut paper or roll paper again. Turn over after cutting.

  Then, the front end of the cut paper or roll paper is again brought into contact with the positioning unit 252 to position the cut paper or roll paper. Then, the user presses the main body 251 to retreat along the parallel groove 254 so that the positioning unit 252 does not interfere with the cut paper or the roll paper, and records on the back surface of the cut paper or the roll paper. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  FIG. 9 is a view showing positioning means according to the sixth embodiment. This positioning means 260 has basically the same configuration as the positioning means 240 shown in FIG. 7, and is a rectangular plate-shaped positioning plate 261 and two torsion coil springs 262 respectively disposed at both ends of the positioning plate 261. It has. The positioning unit 260 is different from the positioning unit 240 shown in FIG. 7 in that an antistatic tape 267 that discharges static electricity charged to cut paper or roll paper is attached to the positioning plate 261. Yes. Therefore, the positioning plate 261 needs to be attached to a place where it can be grounded. In this example, the positioning plate 261 is attached to a boundary portion between the guide plate 134 made of sheet metal and the recording table 129.

  That is, the positioning plate 261 disposed on the guide plate 134 is pivotally supported at the lower end thereof on the bottom surface of the guide plate 134 so as to be swingable in the transport direction. The positioning plate 261 has two rectangular holes 263 into which one ends of the two torsion coil springs 262 are inserted, and a projection 264 for a user to grasp and operate with a finger protrudes from the upper right end. Is formed. The two torsion coil springs 262 are engaged with two cylindrical pins 265 and 266 projecting from both ends of the guide plate 134 at the center and the other end, respectively, and function as a bi-stable spring.

  In the positioning means 260 having such a configuration, as shown by a solid line in FIG. 9, the positioning plate 261 normally falls in a state of being accommodated between the guide plate 134 and the recording table 129, that is, downstream in the transport direction. In addition, the upper end of the positioning plate 261 is retracted from the upper end of the recording table 129. At this time, since the positioning plate 261 is pressed by the torsion coil spring 262, the upper end of the positioning plate 261 is fixed in a state of being retracted from the upper end of the recording table 129.

  When double-sided recording is performed, the user picks the protrusion 264 with a finger and swings the positioning plate 261 upstream in the transport direction. As a result, as shown by the one-dot chain line in FIG. 9, the positioning plate 261 protrudes from between the guide plate 134 and the recording table 129, that is, falls to the upstream side in the transport direction, and the upper end of the positioning plate 261 is the recording table. 129 protrudes from the upper end of 129. At this time, since the positioning plate 261 is pressed by the torsion coil spring 262, the upper end of the positioning plate 261 is fixed in a state of protruding from the upper end of the recording table 129.

  Subsequently, the user positions the cut paper or roll paper by bringing the leading end of the cut paper or roll paper into contact with the upper end of the positioning plate 261. Then, the upper end of the positioning plate 261 is retracted from the upper end of the recording table 129 and recording is performed on the surface of the cut sheet or roll sheet. At this time, since the back surface of the cut paper or roll paper comes into contact with the antistatic tape 267, static electricity charged on the cut paper or roll paper is released. Thereafter, the upper end of the positioning plate 261 is protruded from the upper end of the recording table 129 again, the cut paper is turned over, and the roll paper is cut and turned over.

  Then, the front end of the cut paper or roll paper is again brought into contact with the upper end of the positioning plate 261 to position the cut paper or roll paper. Then, the upper end of the positioning plate 261 is again retracted from the upper end of the recording table 129, and recording is performed on the back surface of the cut sheet or roll sheet. At this time, since the surface of the cut paper or roll paper comes into contact with the antistatic tape 267, static electricity charged on the cut paper or roll paper is released. As described above, since the user can set the cut paper or roll paper with high accuracy, it is possible to reduce the occurrence of the recording position deviation on the front and back surfaces of the cut paper or roll paper.

  The positioning plates 211, 221, 231, 241, or 261 of the positioning means 210, 220, 230, 240, or 260 of the first to fourth or sixth embodiments described above are the total length of the cutter groove 136 or the guide plate 134. May be arranged in a single sheet, may be divided into a plurality of sheets, or may be disposed only on one end side of the cutter groove 136 or the guide plate 134. . The antistatic tape 267 according to the sixth embodiment described above includes the positioning plates 211, 221, 231, 241, and the positioning portion 252 of the positioning means 210, 220, 230, 240, 250 according to the first to fifth embodiments. If it can be grounded, it may be attached.

  As shown in FIGS. 1 and 2, the leg portion 140 includes two support pillars 142 each having a moving roller 141. And the main-body part 110 is mounted on the upper part of the support pillar 142, and is fixed with a screw. Since the moving roller 141 is disposed on the support column 142, the heavy main body 110 can be smoothly moved to a desired position and installed.

  As shown in FIGS. 1 and 3, the sheet feeding unit 150 is disposed below the main body unit 110 and between the leg units 140, and includes a pair of support units 151 that support both ends of the roll paper, and a roll A feed roller 152 and a pinch roller 153 for feeding paper are provided. Further, a support portion 151 is fixed, and a pair of arm portions 154 are provided on which both ends of the feed roller 152 and the pinch roller 153 are pivotally supported. Details of the sheet feeding unit 150 having such a configuration will be described below with reference to FIG.

  FIG. 10 is a perspective view showing details of the paper feeding unit 150. The pair of support portions 151 are fixedly attached to the facing surfaces of the pair of arm portions 154 arranged to face each other. The pair of support portions 151 have a built-in bearing, and are pivotally supported at both ends of a spindle that is inserted in the inner peripheral portion of the roll paper and supports the roll paper.

  In other words, the roll paper is fitted in the center, and a pair of flange-shaped roll paper pressers are fitted on both sides of the roll paper, and spanned between the pair of support portions 151. The user can complete the loading of the roll paper simply by lifting the roll paper to which the spindle is attached and fitting the both ends of the spindle into the pair of support portions 151. Therefore, the man-hour for setting the roll paper is greatly reduced. Can be made.

  The delivery roller 152 and the pinch roller 153 are pivotally supported on the opposing surfaces of a pair of arm portions 154 that are oppositely arranged at both ends. That is, the feed roller 152 and the pinch roller 153 are arranged so as to be bridged between the pair of arm portions 154. The both ends of the feed roller 152 are axially supported at fixed locations on the opposing surfaces of the pair of arm portions 154, but the pinch roller 153 can be brought into contact with and separated from the feed roller 152. Both end shafts are axially supported so as to be movable in, for example, grooves provided on the opposing surfaces of the pair of arm portions 154. The pinch roller 153 is locked by a lock mechanism using a locking member and a biasing member provided on the facing surface of the arm portion 154 at a position where the pinch roller 153 is in contact with and separated from the feed roller 152, for example. It has come to be.

  The user can easily pull out the leading end portion of the roll paper by the bearing built in the support portion 151, and the leading end portion of the roll paper can be moved between the feed roller 152 and the pinch roller 153 by the moving mechanism of the pinch roller 153. Since it can be easily inserted and held between them, the number of man-hours for setting the roll paper can be greatly reduced.

  The pair of arm portions 154 are attached to the opposing surfaces of the two support pillars 142 of the leg portion 140 so as to be rotatable in the direction indicated by the arrows. The pair of arm portions 154 can be rotated at the setting position of the roll paper and the paper feeding position of the roll paper by using, for example, a locking member and a biasing member provided on the opposing surface of the support pillar 142. It is positioned by being locked by a mechanism.

  That is, when the pair of arm portions 154 are rotated to the roll paper setting position, the feed roller 152 and the pinch roller 153 jump out to the front side of the ink jet printer 100, and the pair of arm portions 154 feed the roll paper. When rotated to the position, the feed roller 152 and the pinch roller 153 go around the back side of the ink jet printer 100 and are connected to the roll paper transport path.

  When the user inserts and pinches the leading edge of the roll paper between the feed roller 152 and the pinch roller 153, the user does not sink into the back side of the ink jet printer 100 but does not normally stand on the front side of the ink jet printer 100. Since the work can be performed at the position, the man-hours for setting the roll paper can be greatly reduced.

  The pair of support portions 151 are fixedly attached to the facing surfaces of the pair of arm portions 154 arranged opposite to each other, and are configured to rotate together with the arm portions 154. However, the two support pillars of the leg portion 140 are provided. Even if it is configured to be fixedly attached to a shaft concentric with the rotation shaft of the arm portion 154 attached to the facing surface of 142, the same effect can be obtained. That is, the support part 151 may be fixed at a fixed position regardless of the rotation of the arm part 154.

  As described above, according to the ink jet printer 100 of the present embodiment, by providing the positioning unit 200, the cut paper or roll paper can be positioned with reference to the leading edge of the cut paper or roll paper. And roll paper can be set with high accuracy. In addition, even if there is a slight skew when setting cut paper or roll paper, the side edges of the cut paper or roll paper will not bend and deform during recording conveyance, and the recording accuracy of the front and back surfaces of cut paper or roll paper will be improved. Can be improved.

  The positioning means 210, 220, and 230 are arranged to be movable up and down on the recording table 129. The positioning means 210, 220, and 230 are raised and protrude from the recording table 129, and are lowered and stored in the recording table 129. The positioning means 240 and 260 are arranged so as to be swingable in the conveying direction on the recording table 129, swinging to one side and protruding from the recording table 129, swinging to the other side and recording table 129. It is stored in. Further, the positioning means 250 is formed in a paper pressing portion 137 that is movable in the conveyance orthogonal direction and presses both side edges of cut paper or roll paper. Therefore, the positioning means 210, 220, 230, 240, 250, 260 can be retracted during recording on cut paper or roll paper, and the positioning means 210, 220, 230, 240, 250, 260 and the cut paper or Unnecessary interference with the roll paper can be prevented.

  Although the present invention has been described with reference to various embodiments, the present invention is not limited to the above embodiments, and may be applied to other embodiments within the scope of the invention described in the claims. Of course. For example, in the above-described embodiment, an ink jet printer has been described as an example of a recording apparatus. However, the present invention is not limited to this, and any recording apparatus capable of double-sided recording may be, for example, a facsimile apparatus, a copying apparatus, or the like. Is also applicable.

  Any recording apparatus capable of double-sided recording is applicable to, for example, a facsimile apparatus, a copying apparatus, and the like.

1 is a perspective view illustrating a configuration example of an ink jet printer that is one of recording apparatuses to which a recording medium cutting device according to an embodiment of the present invention is applied. FIG. 2 is a perspective view illustrating an internal configuration example of a main part of the printer of FIG. 1. It is sectional drawing of the principal part of the printer of FIG. It is a figure which shows the positioning means which concerns on 1st Embodiment. It is a figure which shows the positioning means which concerns on 2nd Embodiment. It is a figure which shows the positioning means which concerns on 3rd Embodiment. It is a figure which shows the positioning means which concerns on 4th Embodiment. It is a figure which shows the positioning means which concerns on 5th Embodiment. It is a figure which shows the positioning means which concerns on 6th Embodiment. FIG. 2 is a perspective view illustrating details of a paper feeding unit of the printer of FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ink cartridge, 100 Inkjet printer, 110 Main body part, 111 Housing, 112 Top cover, 113 Front cover, 120 Recording part, 121 Recording head, 122 Carriage, 123 FFC, 124 Ink tube, 125 Paper feed roller, 126 Followed roller, 127 rail, 128 carriage belt, 129 recording table, 130 paper discharge unit, 131 paper discharge roller, 132 driven roller, 133 paper discharge port, 134 guide plate, 135 cutter, 136 cutter groove, 137 paper presser, 140 leg, 141 Roller, 142 Support pillar, 150 Paper feed unit, 151 Support unit, 152 Delivery roller, 153 Pinch roller, 154 Arm unit, 160 Ink cartridge holder, 161 Holder body, 162 Cover, 170 Operation panel, 200, 210, 20,230,240,250,260 positioning means, 211,221,231,241,261 positioning plate, 212, 222 cam pin 232 links, 252 positioning unit, 215, 225 cam groove 267 antistatic tape

Claims (8)

A recording apparatus that conveys a recording medium and records it on the front side, and then conveys the recording medium that is turned over and records it on the back side,
A recording apparatus comprising: a positioning unit that abuts against a leading end of the recording medium when the recording medium is set, and positions the recording medium to reduce a recording position deviation between the front and back surfaces. 2. The recording according to claim 1, wherein the positioning means is arranged to be movable up and down on a recording table, and rises to protrude from the recording table and descends to be stored in the recording table. apparatus. The recording apparatus according to claim 2, wherein the positioning unit is moved up and down by a cam mechanism or a link mechanism in accordance with movement in the conveyance orthogonal direction. The positioning means is disposed on the recording table so as to be swingable in the conveying direction, swings to one side, protrudes from the recording table, swings to the other side, and is stored in the recording table. The recording apparatus according to claim 1. The recording apparatus according to claim 1, wherein the positioning unit is disposed in a cutter groove provided in the recording table. The recording apparatus according to claim 1, wherein the positioning unit is installed so as to be able to contact a part of a tip of the recording medium. The recording apparatus according to claim 1, wherein the positioning unit is formed on a pressing member that is movable in a conveyance orthogonal direction and presses both side edges of the recording medium. The recording apparatus according to claim 1, wherein an antistatic material capable of grounding is attached to the positioning unit.

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