JP4821138B2 - Inkjet recording device - Google Patents

Description

  The present invention relates to an ink jet recording apparatus, and more particularly to an ink jet recording apparatus provided with a platen leveling mechanism for supporting a recording medium.

  2. Description of the Related Art Conventionally, printing is performed on a fabric by including a support portion (platen) having a support surface that supports a fabric, which is a printing medium, from below, and transporting the support portion in a direction perpendicular to the direction in which the ink discharge portion moves. A fabric printing apparatus has been proposed (for example, Patent Document 1). Further, in a general inkjet printer that prints a printing medium such as paper, the platen only supports the printing medium under a print head (ink ejection unit), and the printing medium on the platen includes a driving roller and It is nipped by a pressure roller and conveyed. In such a general inkjet printer, in order to adjust the distance (paper gap) between the platen and the print head, the portion of the platen facing the print head is divided into a plurality of blocks according to the running method of the print head. Yes. This block has a mounting portion erected on the surface opposite to the surface facing the print head, and is mounted on a mounting plate erected from the base member with mounting screws. And there exists what adjusts the space | interval of each block and a print head by the tightening degree of this attachment screw (for example, patent document 2).

  Further, as in the example shown in FIG. 12, by using the eccentric pins 141 and 143, by adjusting the horizontal direction of the platen support surface 191 that supports the platen 5 in the platen attachment member 80 to which the platen 5 is attached, Some have adjusted the horizontal direction. FIG. 12 is a perspective view of the platen mounting member 80 and the platen 5 of the conventional example. As shown in FIG. 12, the platen mounting member 80 includes a first member 199 which is a plate member formed in an L shape in plan view, and first rectangular members 193 and 194 formed so as to be perpendicular to each other. The second member 198 is formed of a substantially rectangular platen support surface 191 and a third member 197 formed so that the plate member 192 is perpendicular to each other. The platen support surface 191 of the third member 197 is provided with three holes 181, 182, and 183. This hole is for fixing the platen 5. The platen 5 is also provided with through holes 151, 152, and 153 so as to overlap the holes 181 to 183. The through holes 151 to 153 and the holes 181 to 183 are also provided. Screws 121, 122, 123 are respectively inserted into the.

  The first member 199 and the plate member 194 of the second member 198 are overlapped in parallel and fixed with four screws. Further, the first member 199 and the plate member 194 of the second member 198 are provided with two holes 131 and 132 arranged in the vertical direction (vertical direction in FIG. 12), and the upper hole 131 is eccentric. A pin 141 is inserted, and a cylindrical pin 142 is inserted into the lower hole 132. Further, the plate member 193 of the second member 198 and the plate member 192 of the first member 197 are overlapped in parallel and fixed with one screw. Further, the plate member 193 of the second member 198 and the plate member 192 of the first member 197 are provided with two holes 133 (one not shown) arranged side by side on the left (left in FIG. 12). The eccentric pin 143 is inserted into the (direction) hole 133, and the cylindrical pin 144 is inserted into the right hole (not shown). Then, by the tightening of these eccentric pins 141, the horizontal direction of the platen 5 in the front-rear direction (arrow B direction in FIG. 12) can be adjusted, and the platen 5 in the left-right direction (arrow A direction in FIG. 12) can be adjusted. Horizontal adjustment can be made.

JP 2004-291430 A Japanese Patent Application Laid-Open No. 11-207944

  However, in the fabric printing apparatus as shown in Patent Document 1, the platen is fixed to a slide mechanism that conveys the platen, and the horizontal inclination of the platen cannot be adjusted. In particular, in a fabric printing apparatus that transports a platen as shown in Patent Document 1, it is necessary that the distance from the ink discharge portion is constant throughout the entire platen, and an adjustment mechanism as shown in Patent Document 2 is used. In such a case, there is a problem that it is difficult to make a fine adjustment and it takes time and effort. Moreover, in the fabric printing apparatus as shown in Patent Document 1, the platen may be exchanged depending on the shape and material of the printing medium, and it is troublesome to adjust a large number of mounting screws each time. .

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an ink jet recording apparatus including a platen leveling mechanism that supports a recording medium.

In order to solve the above-described problem, in the ink jet recording apparatus according to the first aspect of the present invention, a recording unit including a nozzle surface on which a nozzle for performing recording by ejecting ink onto a recording medium is formed, and facing the nozzle surface disposed, said a flat plate-shaped platen for supporting the recording medium with the nozzle surface and spacing, in the ink jet recording apparatus having a flat plate-like platen attaching member for supporting the platen, the resilient member from it, the three supporting members is disposed between the platen and the platen attachment member, and a three screwing member for screwing the said platen to said platen mounting member, said three screw stop member each of through each of said three supporting members, the straight line connecting the each front Symbol three support members are arranged the three support members so as to form a triangle It has a structure which is characterized in that it comprises a horizontal adjusting means for adjusting the horizontal inclination of the platen with respect to the platen mounting member by adjusting the tightness of the three screws member.

Further, in the ink jet recording apparatus of the invention according to claim 2 , in addition to the configuration of the invention of claim 1, the ink jet recording apparatus is detachable from the ink jet recording apparatus in a state where the platen mounting member and the platen are attached. It is the structure characterized by this.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect , the platen mounting member is provided with a screw hole, and the screwing member is the platen mounting member. A fixing member that penetrates the screw hole and fixes the screwing member so as not to loosen is provided.

In the ink jet recording apparatus of the invention according to claim 1 is made of an elastic body, and three supporting member disposed between the platen attachment member and the platen, and three screwing member for screwing the platen to the platen mounting member comprising a, each of three screws stop member extends through each of the three support members, three of a straight line connecting each of the support members are arranged three support members so as to form a triangle, horizontal adjust means You can adjust the horizontal inclination of the platen with respect to the platen mounting member by adjusting the tightness of the three screws member. Therefore, the horizontal inclination of the platen can be easily adjusted by the screwing member.

In addition, in the ink jet recording apparatus of the invention according to claim 2 , in addition to the effect of the invention of claim 1, since the platen mounting member and the platen are attached and detached from the ink jet recording apparatus, If the platen is adjusted horizontally with respect to the platen mounting member, when replacing the platen, it is only necessary to replace the platen mounting member and the mounted platen, so there is no need to make a horizontal adjustment each time the platen is replaced. .

In the ink jet recording apparatus of the invention according to claim 3 , in addition to the effect of the invention of claim 1 or 2 , the platen mounting member is provided with a screw hole, and the screwing member is a screw hole of the platen mounting member. In addition, since a fixing member that secures the screwing member so as not to loosen is provided, the screwing member does not loosen during printing or platen replacement, and the horizontal inclination easily changes. There is nothing.

  Hereinafter, a first embodiment of an ink jet recording apparatus of the present invention will be described with reference to the drawings. First, an overall configuration of an inkjet printer 1 which is an example of an inkjet recording apparatus will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view of an inkjet printer 1 according to the present embodiment, FIG. 2 is a front view, and FIG. 3 is a right side view.

  In the present embodiment, the inkjet printer 1 is a well-known inkjet printer that supplies ink to an inkjet head having a nozzle surface for ejecting ink and performs printing on a recording medium. This is an industrial inkjet printer for handling fabrics and printing on fabrics such as T-shirts based on input image information and the like. As shown in FIGS. 1 to 3, the ink jet printer 1 protects the recording mechanism and the recording mechanism on the flat plate-like base 2 and on the back side of the ink jet printer 1 (upper side in FIG. 1, right side in FIG. 3). Main body cover 10 is provided. In the main body cover 10, an inclined surface wall 12 extends from an upper end of a plate-like front wall 11 disposed in a direction perpendicular to the base 2 in an obliquely upward direction on the back side. An upper surface wall 13 parallel to the base 2 extends from the back end of the inclined surface wall 12, and a back wall 14 extends in the vertical direction of the base 2 from the back end of the upper surface wall 13 to the base 2. Installed to protect the recording mechanism. A right wall 16 extends to the right end of the front wall 11, the inclined surface wall 12, the upper surface wall 13 and the rear wall 14 in the vertical direction of the base 2 to the base 2. At the left end of 13 and the back wall 14, a left wall 17 extends to the base 2 in the vertical direction of the base 2.

  The recording mechanism in the main body cover 10 is a well-known ink jet recording mechanism, and a guide for guiding the movement of the carriage on which the ink jet head is mounted in the left and right direction of the ink jet printer 1 (the direction of arrow A in FIGS. 1 and 2). Rails are erected. A carriage motor is provided near the left end of the guide rail, a pulley is provided near the right end, and a carriage belt is installed between them. The carriage belt is fixed to the rear surface of the carriage, and the carriage is reciprocated in the direction of arrow A along the guide rail engaged with the engaging portion provided on the rear surface by driving the carriage motor. It has become. In the present embodiment, the lower side in FIG. 1 is the front side of the inkjet printer 1, and the upper side is the back side of the inkjet printer.

  The base 2 is provided with rails 7 for guiding the movement of the platen 5 for setting the recording medium in the front-rear direction of the inkjet printer 1 (the direction of arrow B shown in FIGS. 1 and 3). . The rail 7 is provided with a platen support (not shown), and a platen attachment member 8 to which the platen 5 is attached is installed at the upper end of a column 90 raised vertically from the platen support. Yes. The upper end of the support 90 is provided with a fitting hole into which the foot portion 87 of the platen attachment member 8 is fitted. The foot portion 87 is fitted into the fitting hole to support the platen attachment member 8 and the platen 5. It has been. The platen mounting member 8 and the platen 5, which are the main parts of the present invention, will be described in detail later with reference to FIGS.

  The platen 5 is a substantially rectangular plate having a longitudinal direction in the direction of arrow A in a plan view, and a recording medium made of a cloth such as a T-shirt is placed on the upper surface of the platen 5 horizontally. It is. Further, a chevron handle 55 is provided at the front end of the platen 5 from both ends. There are a plurality of types of the platen 5, and the type of the platen 5 to be used is determined depending on the size of a recording medium such as a T-shirt. When the platen 5 is replaced, the platen 5 is replaced with the platen mounting member 8.

  Note that the tray 4 fixed to the column 90 at a substantially intermediate position between the platen 5 and the platen support base has a bottom surface substantially parallel to the top surface of the platen 5, and the outer periphery of the tray 4 is larger than that of the platen 5. A tray that is slightly larger. The tray 4 receives a sleeve so that the sleeve of the T-shirt does not fall on the base 2 when the user places the T-shirt on the platen 5. A rail cover 6 for protecting the lower portion of the inkjet printer 1 such as the rail 7 is provided in front of the main body cover 10.

  A platen drive motor is provided at the rear end of the rail 7 (the upper end in FIG. 1), and the platen support is reciprocated in the direction of arrow B by driving the platen drive motor. The rail 7 is installed in the main body cover 10 from the opening 19 of the main body cover 10, and the platen 5 is conveyed to the recording mechanism through the opening 19. The platen drive motor is protected by a motor cover 3 provided on the back side of the main body cover 10. In the present embodiment, the left side in FIG. 1 is the left side of the inkjet printer 1, and the right side is the right side of the inkjet printer 1.

  Here, the conveying operation of the platen 5 during printing will be described. The platen 5 is made to wait at the front end of the rail 7 (the lower end in FIG. 1, the default position) before printing is started or after printing is executed. At the start of printing, the platen 5 waiting at the default position is transported along the rail 7 toward the rear end of the rail 7, and when it reaches the rear end, the transport direction is reversed. From the rear end portion to the front end portion, the sheet is transported to the print execution position scanned by the ink jet head. When printing is performed, the platen 5 is conveyed to the front end portion one line at a time from the printing execution position scanned by the inkjet head. When the printing is finished, the platen 5 on which the recording medium is placed is further transported to a default position located at the front end of the rail 7, and a series of operations is finished.

  As shown in FIG. 1, an ink cartridge storage section 30 that stores ink cartridges for the respective colors is provided on the left side of the main body cover 10. Each of the ink cartridges stored in the ink cartridge storage unit 30 is provided with an ink supply tube, and is connected to the ink jet head to supply ink to the ink jet head. As shown in FIGS. 1, 2, and 3, an operation panel 28 for operating the inkjet printer 1 is provided at a position on the right side of the inkjet printer 1.

  Next, attachment of the platen 5 to the platen attachment member 8 will be described with reference to FIGS. 4 is an exploded perspective view of the platen mounting member 8 and the platen 5, FIG. 5 is a front view of the platen mounting member 8 and the platen 5, and FIG. 6 is a left side view of the platen mounting member 8 and the platen 5. FIG. 7 is an enlarged cross-sectional view of the screw 21 portion. 8 is a front view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is tilted to the right. FIG. 9 is a front view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is tilted to the left. FIG. 10 is a left side view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is tilted toward the front side, and FIG. 11 is a platen mounting member 8 in a state where the platen 5 is tilted toward the back side. 2 is a left side view of the platen 5. FIG. 4 to 11, the handle 55 of the platen 5 is omitted.

  In FIG. 4, the lower right direction is the front direction of the ink jet printer 1, the upper left direction is the back direction of the ink jet printer 1, the upper right direction is the right direction of the ink jet printer, and the lower left direction is the left direction of the ink jet printer. 5 is the right direction of the inkjet printer 1, the left direction is the left direction of the inkjet printer 1, the right direction in FIG. 6 is the front direction of the inkjet printer 1, and the left direction is the back direction of the inkjet printer 1. .

  As shown in FIGS. 4 to 6, the platen mounting member 8 has a mounting plate support 86 extending from the upper end of a foot 87 that is a vertical prism in the inkjet printer 1 in parallel to the longitudinal direction of the platen 5. A platen mounting plate 85 having a substantially rectangular flat plate shape is extended at the tip thereof in parallel with the horizontal direction of the ink jet printer 1. Then, the foot portion 87 is inserted into the fitting hole of the support column 90.

  The platen mounting plate 85 is provided with three through holes 81, 82, 83. The through holes 81, 82, and 83 constitute a substantially equilateral triangle, and the through hole 81 is disposed at a substantially central position slightly inward from the front end of the platen mounting plate 85, and the through hole 82 is mounted on the platen. The plate 85 is disposed slightly inward from the left back corner of the plate 85, and the through hole 83 is disposed slightly inward from the right back corner of the platen mounting plate 85. In addition, three through holes 51, 52, and 53 are also arranged in a substantially equilateral triangle at substantially the center of the platen 5. The through holes 51 to 53 are arranged in the same balance as the arrangement of the through holes 81 to 83 provided in the platen mounting plate 85. When the platen 5 and the platen mounting plate 85 are overlapped, the through holes 51 and 53 are arranged. The positions of the through hole 81, the through hole 52 and the through hole 82, and the through hole 53 and the through hole 83 coincide.

  Furthermore, screws 21, 22, 23, support members 31, 32, 33 and nuts 41, 42, 43 are provided. The screws 21-23 are externally threaded, and the nuts 41-43 are internally threaded. And the supporting members 31-33 are formed with the rubber | gum which has elasticity, and are carrying out the donut shape which provided the through-hole in the center part. As shown in FIG. 7, the support members 31 to 33 are arranged between the platen 5 and the platen mounting plate 85, and the screws 21 are the through holes 51 of the platen 5, the holes of the support member 31, and the platen mounting plate 85. The through holes 81 are inserted in this order and fixed by the nut 41. Similarly to the screw 21, the screw 22 is inserted into the through hole 52 of the platen 5, the hole of the support member 32, and the through hole 82 of the platen mounting plate 85, and is fixed by the nut 42. Similarly, the screw 23 is inserted into the through hole 53 of the platen 5, the hole of the support member 33, and the through hole 83 of the platen mounting plate 85, and is fixed by the nut 43. The nuts 41 to 43 correspond to “fixing members”.

  In this manner, the platen 5 is fixed to the platen mounting plate 85 with the support members 31 to 33 being sandwiched by the screws 21 to 23. When the tightening degree of the screws 21 to 23 is adjusted, the thickness varies depending on the difference in the compression amount of the support members 31 to 33. And since the three screws 21-23 are arrange | positioned at the substantially equilateral triangle, the horizontal adjustment to the inkjet printer 1 of the platen 5 can be performed by adjusting the tightening degree of the screws 21-23.

  Specifically, the horizontal adjustment of the platen 5 in the left-right direction can be performed by adjusting the screws 22 and 23. When the screw 23 is tightened more strongly than the screw 22, the right end of the platen 5 is lowered as shown in FIG. 8. When the screw 22 is tightened more strongly than the screw 23, As shown in FIG. 9, the left end of the platen 5 is lowered. Therefore, in a state where the right end is lowered, the horizontal adjustment in the horizontal direction is performed by increasing the tightening degree of the screw 22 or decreasing the tightening degree of the screw 23. When the left end is lowered, the screw 23 is tightened tightly or the screw 22 is tightened weakly to perform horizontal adjustment in the left-right direction. At this time, since the screws 22 and 23 are inserted from the top to the bottom of the platen 5 and the heads of the screws are present on the surface of the platen 5, the platen 5 and the platen mounting member 8 are moved to the column 9. Leveling can be easily performed in the attached state. Further, since the screws 21 to 23 are fixed by the nuts 41 to 43 from the lower side of the platen mounting plate 85, the screws 21 to 23 are not loosened even when the platen 5 is conveyed.

  Further, the horizontal adjustment of the platen in the front-rear direction can be performed by adjusting the screw 21. When the screw 21 is tightened more strongly than the screws 22 and 23, the front side of the platen 5 is lowered as shown in FIG. 10, and when the screw 21 is tightened more loosely than the screws 22 and 23, As shown in FIG. 11, the back side of the platen 5 is lowered. Therefore, in the state where the front side is lowered, the screw 21 can be loosened or the screws 22 and 23 can be tightened to adjust the horizontal direction in the front-rear direction. In the state where the back side is lowered, the screw 21 can be tightened tightly, or the screws 22 and 23 can be loosened tightly to perform horizontal adjustment in the front-rear direction.

  Thus, the horizontal adjustment of the platen 5 can be easily performed by adjusting the three tightening degrees of the screws 21 to 23.

  The ink jet recording apparatus of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. For example, in the above embodiment, the platen 5 is a substantially rectangular plate-like member, but the shape of the platen 5 is not limited to this. For example, plate members such as various polygons such as a circle, an ellipse, a parallelogram, and a pentagon may be used, and the upper surface (the surface on which recording is performed) may be flat.

  Further, the shape of the platen mounting member 8 is not limited to the above-described embodiment, and the platen mounting plate 85 is not a plate-shaped member having a rectangular shape, but plate shapes such as various polygons such as a circle, an ellipse, a parallelogram, and a pentagon. It may be a member. Further, the shapes of the mounting plate support portion 86 and the foot portion 87 are not limited to the above-described embodiment, and may be a cylinder or a quadrangular column standing upright from the back surface of the platen mounting plate.

  Moreover, in the said embodiment, although the screws 21-23 and the support members 31-33 were arrange | positioned at the vertex of a substantially equilateral triangle, these arrangement numbers and arrangement positions are not restricted to this. For example, it may be a polygonal vertex such as a substantially rectangular vertex, a pentagonal vertex, an isosceles triangle vertex, a right triangle vertex, an arbitrary triangle vertex, or may be arranged in a circle.

  Moreover, in the said embodiment, although the screws 21-23 have each penetrated the support members 31-33, the support member does not necessarily need to be penetrated by the screw. For example, it may be fixed on a platen mounting plate, and the screw may pass through a different place from the support member. Moreover, in the said embodiment, although the supporting members 31-33 are all formed with the rubber | gum which has elasticity, one (for example, the supporting member 32) may be formed with the raw material which does not have elasticity, at least, If the two support members have elasticity, the horizontal adjustment may be performed. Further, the material of the support members 31 to 33 may be a material having elasticity such as resin instead of rubber.

  Moreover, in the said embodiment, although the screws 21-23 are each fixed by the nuts 41-43, you may fix the screws 21-23 not with a nut but with an adhesive agent. For example, the internal threads may be cut in the through holes 81 to 83 of the platen mounting plate 85, and the platen mounting plate 85 may be fixed with an adhesive without using the nuts 41 to 43.

  The ink jet recording apparatus of the present invention can be applied to an ink jet recording apparatus in which the platen is exchanged.

It is a top view of the inkjet printer 1 of this Embodiment. 1 is a front view of an inkjet printer 1 according to an embodiment. 1 is a right side view of an inkjet printer 1 according to an embodiment. 4 is an exploded perspective view of the platen mounting member 8 and the platen 5. FIG. 3 is a front view of the platen mounting member 8 and the platen 5. FIG. 4 is a left side view of the platen mounting member 8 and the platen 5. FIG. It is an expanded sectional view of a screw 21 portion. It is a front view of the platen attachment member 8 and the platen 5 in a state where the platen 5 is inclined to the right side. It is a front view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is inclined to the left side. FIG. 6 is a left side view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is inclined toward the front side. FIG. 6 is a left side view of the platen mounting member 8 and the platen 5 in a state where the platen 5 is inclined to the back side. It is a perspective view of the platen mounting member 80 and the platen 5 of a conventional example.

DESCRIPTION OF SYMBOLS 1 Inkjet printer 5 Platen 8 Platen attachment member 9 Support | pillar 31 Support member 32 Support member 33 Support member 41 Nut 42 Nut 43 Nut 51 Through-hole 52 Through-hole 53 Through-hole 80 Platen attachment member 81 Through-hole 82 Through-hole 83 Through-hole 85 Platen Mounting plate 86 Mounting plate support 87 Foot 90 Prop

Claims (3)

A recording means having a nozzle surface on which nozzles that perform recording by jetting ink onto a recording medium are formed, and is disposed to face the nozzle surface, and supports the recording medium at a distance from the nozzle surface. In an inkjet recording apparatus comprising a flat plate-like platen that performs and a flat plate-like platen mounting member that supports the platen,
Three support members made of an elastic body and disposed between the platen mounting member and the platen;
And three screwing member for screwing the said platen to said platen mounting member,
Each of the three screwing members penetrates each of the three support members,
A straight line connecting the respective front Symbol three support members are arranged the three support members so as to form a triangle,
An ink jet recording apparatus characterized by comprising leveling means for adjusting the horizontal inclination of the platen with respect to the platen mounting member by adjusting the tightness of the previous SL three screwing member. An ink jet recording apparatus according to claim 1, characterized in that said said platen mounting member platen is detachable from said ink jet recording apparatus in a state of being mounted. The platen mounting member is provided with a screw hole, the screwing member passes through the screw hole of the platen mounting member, and a fixing member for fixing the screwing member so as not to loosen is provided. an ink jet recording apparatus according to claim 1 or 2, characterized.

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