JP4211845B2 - Tube holder, inkjet printer ink supply piping system, and inkjet printer - Google Patents

Tube holder, inkjet printer ink supply piping system, and inkjet printer Download PDF

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Publication number
JP4211845B2
JP4211845B2 JP2006333852A JP2006333852A JP4211845B2 JP 4211845 B2 JP4211845 B2 JP 4211845B2 JP 2006333852 A JP2006333852 A JP 2006333852A JP 2006333852 A JP2006333852 A JP 2006333852A JP 4211845 B2 JP4211845 B2 JP 4211845B2
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ink
tape
printing
unit
tube
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JP2007112138A (en
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信敏 大塚
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セイコーエプソン株式会社
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Description

  The present invention relates to a tube holder for supplying ink from a fixed ink tank to an inkjet head, an ink supply piping system for an inkjet printer, and an inkjet printer.

Conventionally, in this type of ink supply piping system, ink is supplied to a plurality of inkjet heads from a cartridge-type ink tank that stores a plurality of colors of ink through a plurality of tubes corresponding to each ink color. It has become. In this case, the plurality of tubes are arranged side by side in a piping path including a flexible path such as a cable bear.
Each tube is comprised with the hard resin tube, and is connected via the joint (elbow) in the corner part of a piping path | route.

  If the tube is connected by a joint (elbow) at the corner portion of such a conventional piping path, the cost is high, and a simple plug-in connection may cause ink leakage from the joint portion. There is. Moreover, there is a possibility that desired water head pressure and ink flow rate cannot be secured in the ink jet head due to pressure loss due to the joint.

  An object of the present invention is to provide a tube holder, an ink supply piping system for an ink jet printer, and an ink jet printer that can uniformly and minimize pressure loss in a pipe line reaching each ink jet head.

The tube holder of the present invention is a tube holder that is provided at a corner in a tube piping path for supplying ink from an ink tank to an inkjet head, and that is curved in the same plane and holds a plurality of tubes side by side , a holder body formed in plan view substantially curved shape along the corner, a plurality of formed side by side on the front surface of the parallel holder body in a plane, and a plurality of tube holding groove for holding the curved state along the tube corner, have a plurality of tube holding groove, characterized in that it is formed with the same radius of curvature in a plane.

According to this configuration, since the tube holding groove that holds the tube in a bent state along the corner is formed, the tube can be installed in a state bent along the corner while suppressing cross-sectional deformation of the tube. it can. In addition, joints such as 90 ° elbows and 45 ° elbows can be omitted. In terms of function, the hard resin tube can be bent to the extent that it is slightly whitened, and the soft resin tube can be bent to the extent that it is not crushed (the cross section is not elliptical).
Moreover, it can pipe to the corner part of a piping path | route in the state which aligned and bent the several tube.
Furthermore, the pipe line condition of the portion bent by the tube holding groove of each tube can be made the same, and the pressure loss in the plurality of tubes can be made exactly the same.

In this case, each tube holding groove is preferably formed to a depth that allows a plurality of tubes to be stacked and held.

  According to this configuration, so-called tubes can be stacked, a plurality of tubes can be piped in a narrow space, and the pipe path can be configured to be narrow.

In these cases, it is preferable that each tube holding groove is composed of a curved portion and two linear portions respectively connected to both ends of the curved portion.

  According to this configuration, the tube can be bent without difficulty from the straight part to the curved part, and from the curved part to the straight part, and bending stress can be prevented from concentrating on a part of the tube.

  In these cases, the holder main body is integrally formed by the curved shape portion and the two linear shape portions respectively connected to both ends of the curved shape portion, and the outer radius end surface and the inner radius end surface of the curve shape portion have the same radius of curvature. It is preferable that they are formed.

  According to this configuration, when a plurality of tube holders are installed in a line, the outer rounded end face and the inner rounded end face of the adjacent tube holder can be brought into contact with no gap, and the plurality of tube holders can be neatly arranged and easily arranged. Can be installed.

  In these cases, the holder main body is integrally formed by the curved shape portion and the two linear shape portions respectively connected to both ends of the curved shape portion, and the two linear shape portions are formed to have the same length. Is preferred.

  According to this configuration, at the branch portion where the piping path branches to the left and right, the other tube holder is rotated by 90 ° with respect to one tube holder, so that the same tube holder can be used for this branch portion. Can be made. That is, it is not necessary to prepare a plurality of types of tube holders having different shapes.

  The ink supply piping system of the ink jet printer of the present invention is characterized in that the above-described tube holder of the present invention is provided at a corner in a tube piping path for supplying ink from an ink tank to the ink jet head.

  According to this configuration, since a bending joint is not required at the corner portion of the piping path, it is possible to achieve cost reduction and to reduce the pressure loss of the pipe line as much as possible.

  An ink jet printer according to the present invention includes the above-described ink supply piping system according to the present invention.

  According to this configuration, ink can be stably supplied to the inkjet head, and ink can be supplied to a plurality of inkjet heads under the same conditions.

  As described above, according to the tube holder and the ink supply piping system of the present invention, it is possible to install the tube in a state where the tube is bent along the corner while suppressing cross-sectional deformation, and therefore, the joint can be omitted. Thereby, ink leakage in the pipeline can be suppressed, and cost reduction and pressure loss in the pipeline can be reduced as much as possible. Therefore, the influence of the pipeline on the ink jet head can be eliminated.

  Furthermore, according to the ink jet printer of the present invention, ink can be stably supplied to the ink jet head, and ink can be supplied to a plurality of ink jet heads under the same pressure condition, thereby obtaining a stable print quality. Can do.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The ink jet printer of the embodiment is a large business color printer connected to an external device such as a personal computer (hereinafter referred to as a personal computer), and prints a desired image by an ink jet method based on image data created by the external device. To do. Specifically, an ink jet printer continuously prints a number of unit images that are cut out later and used as labels on a printing tape that is continuous paper. For example, a label that is stuck on a wrap film of fresh food Can be printed in a small lot.

  FIG. 1 is an external perspective view showing the overall configuration of the ink jet printer, and FIG. 2 is an external perspective view from the back side of the ink jet printer with a partial configuration omitted.

  As shown in both drawings, the inkjet printer 1 is configured by connecting a small finisher 3 to a large machine base 2, and a printing tape A installed on the machine base 2 is provided on the machine base 2 side. The printing means 5 for printing on the tape, the tape supply means 6 for feeding the roll-shaped printing tape A protruding rightward from the machine base 2, and the tape feeding path 4 for cutting the machine base 2 vertically. A tape feeding means 7 for feeding the printing tape A is provided. On the finisher 3 side, a tape winding means 8 for winding the printed printing tape A received from the tape feeding means 7 in a roll shape is incorporated.

  Further, the machine base 2 is provided with an ink supply means 9 for supplying ink to the head unit 24 (inkjet head 26) of the printing means 5 and a maintenance means 10 for maintaining the ink jet head 26. A controller 11 (control means) for controlling the means individually and in association with each other is provided.

  The ink jet printer 1 sucks the printing tape A fed out from a roll shape horizontally via the suction table 101 of the tape feeding means 7 and drives the printing means 5 in this state so that a large number of images (unit images) can be obtained. B) is continuously printed, and the printed portion (unit print area C) is sent out from the suction table 101 at any time to perform the next continuous printing. Finally, the printing tape A after printing by the tape winding means 8 is performed. (See FIGS. 1 and 17). As shown in FIG. 17, the unit print area C of the print tape A includes a large number of unit images B, an image position mark D for detecting the position of each unit image B, and a tape feed for each unit print area C. A detection mark E for printing is printed.

  The printing tape A is a roll paper with so-called release paper, and a plurality of types (11 types) of different widths are prepared with a tape width of 10 mm from a minimum of 50 mm to a maximum of 150 mm. In printing, unit images B serving as labels are continuously printed in the extending direction of the printing tape A, and each unit image B is recognized via an image position mark D by another cutting device as an outer process. It is half-cut and becomes a label with an adhesive.

  The ink used for this printing, that is, the ink used for one-line color printing, is cyan (C), magenta (M), yellow (Y), and black (K), light cyan (LC), and light magenta (LM). ), And each color ink is supplied to each inkjet head 26 (head unit 24) via each intermediate ink pack 351 as a sub tank (see FIG. 2 and the like). .

  The machine base 2 is formed by assembling the angle members 12 in a rectangular parallelepiped shape, and a base plate 13 is fixed to the upper portion and a shelf plate 14 is fixed to the lower portion, and four casters 15 are provided below the shelf plate 14. Six support legs 16 with adjusting bolts are attached. On the base plate 13, in addition to the printing means 5, the maintenance means 10 is arranged in the center, the sub tank side of the ink supply means 9 is arranged on the back side, and the main part of the tape feeding means 7 is arranged on the front side. A tape supply means 6 is attached to one end portion of the base plate 13 in the longitudinal direction via an intermediate angle member 12 in the front-rear direction.

  The base plate 13 is open in a substantially square shape on the tape winding means 8 side and on the front side (two locations), and faces the openings 17 and 17 between the base plate 13 and the shelf plate 14. The tape feed path 4 is formed so as to largely detour downward. Further, the main component (tank side) of the ink supply means 9 is disposed on the back side of the shelf plate 14 and a large waste ink tank 18 for storing unnecessary waste ink after maintenance is disposed. ing. Further, the controller 11 is disposed between the base plate 13 and the shelf plate 14 on the right front side across the partition plate 19.

  Although not shown in the figure, a safety cover is provided on the base plate 13 of the machine base 2 so as to integrally cover the above-mentioned respective means, etc., with an opening / closing door on the front and on the upper surface thereof. Each warning light is provided. The safety cover is equipped with a detection switch (detection sensor) that detects the closing of the door, so that the main power supply (not shown) can be turned on only when the detection switch detects the closing of the door. It has become. Further, when the door is opened while the main power is on, the main power is automatically turned off via the detection switch. The warning lamp has a tape indicator lamp section for displaying a tape end in addition to an operation indicator lamp section for displaying a printing operation.

  On the other hand, the finisher 3 includes a finisher body 20 and four support legs 21 with adjusting bolts attached to the lower portion of the finisher body 20, and the tape take-up means 8 is incorporated in the finisher body 20. An operation panel 22 for adjusting the winding torque of the printing tape A and the like is provided on the upper left portion of the front surface of the finisher body 20. As with the safety cover, the main power supply of the ink jet printer 1 can be turned on only when the finisher 3 is connected to the machine base 2.

  Next, each unit of the ink jet printer 1 will be described in order. As shown in FIGS. 1 to 3, the printing unit 5 includes a head unit 24 on which a large number of inkjet heads 26 are mounted, and an XY movement mechanism 25 that freely moves the head unit 24 in the main scanning direction and the sub-scanning direction. And have. The XY movement mechanism 25 is a so-called XY robot placed on the base plate 13 and moves the head unit 24 in the X-axis direction (main scanning direction, longitudinal direction or extending direction of the printing tape A). X-axis table 27 to be moved, Y-axis table 28 for moving X-axis table 27 in the Y-axis direction (sub-scanning direction, width direction of printing tape A), and X-axis table 27 arranged in parallel to Y-axis table 28 And a Y-axis guide 29 that guides the movement.

  Although not shown in the drawing, the X-axis table 27 includes a main-scanning ball screw that reciprocates the head unit 24 in the main-scanning direction and a main-scanning ball screw that are not shown in the figure. A main scanning motor for reverse rotation is accommodated. Similarly, the Y-axis table 28 includes a sub-scanning ball screw and a sub-scanning ball screw for reciprocating an X-axis table 27 (not shown) in the sub-scanning direction inside a Y-axis table frame 32 constituting an outer shell. A sub-scanning motor that rotates forward and reverse is housed. The X-axis table frame 31 is provided with a flushing box 61 that is positioned substantially directly above the Y-axis table 28 and moves with the reciprocation of the X-axis table 27.

  The Y-axis guide 29 is mounted in parallel to the three guide columns 34 erected on the base plate 13 across the tape feed path 4, the guide plate 35 passed between the guide columns 34, and the guide plate 35. It has a round bar-like guide rail 36, supports the X-axis table 27 together with the Y-axis table 28, and guides the reciprocation of the X-axis table 27. The guide rail 36 extends partway from the back side to the labor side, and two guide rollers 37 attached to one end of the X-axis table frame 31 roll.

  Reference numerals 38 and 39 in the figure denote an X-axis cable bear 38 and a Y-axis cable bear 39 that flexibly protect piping and wiring reaching the head unit 24, respectively. The Y-axis cable bear 39 is fixed to an intermediate plate whose base end is fixed to the X-axis table frame 31, and the distal end is fixed to the piping plate 408. The X-axis cable bear 39 has a base end fixed to the base plate 13 and a tip fixed to the intermediate plate.

  Although not specifically shown, the X-direction detection sensor that detects the reference position of the head unit 24 in the X-axis direction (the home position, the left side in the figure: the origin of the X-axis) And a Y-direction detection sensor for detecting a reference position (home position, rear side in the drawing: origin of Y axis). When the main power supply of the ink jet printer 1 is turned on, the XY movement mechanism 25 is always reset to this reference position.

  Although not shown, the head unit 24 is provided with a female screw block extending into the X-axis table frame 31 from a horizontal slit formed in the X-axis table frame 31, and this female screw block is screwed into the main scanning ball screw. ing. Similarly, a female screw block extending into the Y-axis table frame 32 from a horizontal slit formed in the Y-axis table frame 32 is attached to one lower end portion of the X-axis table frame 31, and this female screw block serves as a sub-scanning ball. Screwed into the screw.

  The main scanning motor and the sub scanning motor are connected to the controller 11 described above. By rotating the main scanning motor forward and backward, the head unit 24 reciprocates in the main scanning direction to rotate the sub scanning motor forward and backward. As a result, the head unit 24 reciprocates in the sub-scanning direction via the X-axis table 27. One line is printed by the movement of the head unit 24 in the main scanning direction, and the head unit 24 is moved to the next line by the movement in the sub-scanning direction.

  Specifically, with reference to FIG. 1 and FIG. 4, when printing is started on the printing tape A on the suction table 101, for example, with the upper left as the print start position P1, the head unit 24 is moved to the right from this position. 1 line printing (main scanning) is performed by moving a predetermined distance in the direction (forward movement direction in main scanning), and the head unit 24 is moved to the second line by moving the head unit 24 forward at the right end. The second line is printed (main scan) by moving the head unit 24 in the left direction (reverse direction in the main scan). The operation is repeated in this way to print all lines (see FIG. 4B).

  For example, when printing is completed at the lower right position, the printing after the next tape feed moves the head unit 24 from the print end position P2 toward the print start position P1 by the reverse operation. Thus, all lines are printed (see FIG. 4C). Thereby, the movement loss of the head unit 24 is reduced. Note that the flushing of the inkjet head 26 is performed on the flushing box 61 at the left end during one round-trip (two-line printing).

  The head unit 24 includes a support bracket 41 having the above female screw block attached to the back surface, a unified carriage 42 (see FIG. 5) horizontally attached to the lower portion of the support bracket 41, and a plurality of papers attached to the left and right of the support bracket 41. The unified carriage 42 is equipped with a plurality of inkjet heads 26 having a number of ink nozzles (nozzle rows) formed on the lower surface thereof. Specifically, the unified carriage 42 is detachably mounted with four partial carriages 44, and each partial carriage 44 has three side-by-side, that is, a total of twelve inkjet heads 26 on all partial carriages 44. It is attached.

  In this case, each inkjet head 26 is fixed (adhered or screwed) to the partial carriage 44, and each partial carriage 44 is detachably mounted on the unified carriage 42 by positioning mounting means 45 comprising a plurality of pins. Also, each inkjet head 26 mounted on each partial carriage 44 has a main body portion 26a on which ink nozzles are formed protruding downward from the unified carriage 42, and the main body portion 26a is disposed so as to face the ink nozzle row. The group 46 is centrally arranged at the center (see FIG. 6). On the back side of the main body portion 26a, an ink supply portion 49 for appropriately supplying ink of each color is formed by connecting each tube 401 from the sub tank of each color.

  As schematically shown in FIG. 6, the six-color ink nozzle row group 46 constituting one line of the reference color is divided into four, and the divided six-color divided ink nozzle row group 47 includes three pieces. It is incorporated in the ink jet head 26 and mounted on each partial carriage 44. Specifically, two divided ink nozzle rows 47a of black (K) and cyan (C) are incorporated in the first head 26-1 of the three inkjet heads 26 mounted on each partial carriage 44, The second head 26-2 incorporates two divided ink nozzle rows 47a of light cyan (LC) and light magenta (LM), and the third head 26-3 includes magenta (M) and yellow (Y). Two divided ink nozzle rows 47a are incorporated.

  These divided ink nozzle row groups 47 are arranged in a staggered manner so that a part (the ink nozzles) of the divided ink nozzle rows overlap each other, and constitute a color ink nozzle row group 46 of approximately 4 inches (1 line) as a whole. ing. As described above, the ink nozzle array group 46 for one line is divided into four and the ink jet head 26 is configured by incorporating the ink nozzle array group 46. Therefore, by replacing the defective ink jet head 26 as appropriate, the yield of the head unit 24 is increased. It can be improved.

  As shown in FIGS. 1 and 3, the support bracket 41 includes a back plate 51 having the female screw block attached to the outside, and a wide plate 52 that is positioned at the lower end of the back plate 51 and has a large opening for positioning and fixing the unified carriage 42. And both vertical plates 53 sandwiching the back plate 51 and the horizontal plate 52 from the left and right sides and fixing them, and a paper dust removing mechanism 43 is provided on the outer surface of each vertical plate 53. That is, the rear plate 51, the horizontal plate 52, the two vertical plates 53, and the unified carriage 42 constitute a general carriage. A pipe support plate 409 that supports a plurality of tubes 401 and the like is attached to the rear surface of the upper end of the support bracket 41, and a Y-axis cable bear 39 is attached to the pipe support plate 409.

  The paper dust removing mechanism 43 is composed of a pair of front and rear fan holders 55 protruding and fixed on the respective vertical plates 53 and a pair of front and rear paper dust removing fans 56 and 57 held by the fan holder 55. There are four. The pair of front and rear fan holders 55 are integrally formed continuously, and the base side is supported by the vertical plate 53 with the front end side inclined upward with respect to the lower printing tape A. That is, the printing tape A on the suction table 101 faces the paper dust removing fan 56 (57) at an elevation angle of a predetermined angle. Accordingly, the paper dust removing fan 56 (57) held by the fan holder 55 blows air toward the extending direction of the printing tape A obliquely. The fan holder 55 is made of a soft steel plate, and can be adjusted in the angle (0 degree to 45 degrees) of the paper dust removing fan 56 (57) by appropriately bending.

  Specifically, the first paper dust removing fan 56 on the right side blows air on the printing tape A in the oblique forward direction in the main scanning of the head unit 24, and the second paper dust removing fan 57 on the left side is Air is blown onto the printing tape A in the oblique backward movement direction in the main scanning of the head unit 24.

  The paper dust removing fan 56 (57) is an axial fan, and is connected to the controller 11 respectively. Further, as shown in FIG. 7, the paper dust removing fan 56 (57) has a total fan diameter including the entire width of the nozzle row in the head unit 24 in the sub-scanning direction. Thereby, paper dust can be efficiently removed corresponding to the nozzle rows. A wind shield is provided between the paper dust removing fan 56 (57) and the unified carriage 42 so that the blown air of the paper dust removing fan 56 (57) does not reach the inkjet head 26 as much as possible. Also good.

  A processing flow of the paper dust removing mechanism 43 will be described with reference to FIG. As shown in the figure, when a print start command is issued (S1), a flushing operation is first performed (S2), and then the second paper dust removing fan 57 in the backward direction (left side) is stopped. Then, the first paper dust removing fan 56 on the forward direction side (right side) is driven (S3). In this state, the head unit 24 is moved in the forward direction in the main scanning direction to perform printing (S4), and before the next line is printed in the sub-scanning, that is, the printing is performed in the backward direction, the right side is printed. The driving of the first paper dust removing fan 56 is stopped and the second paper dust removing fan 57 on the left side is driven (S5). In this state, the head unit 24 is moved in the backward direction in the main scanning direction to perform printing (S6), and S3 to S6 are repeated until the series of printing is completed (S7: No). Synchronously (S7: Yes), the drive of all the paper dust removal fans 56 (57) is stopped (S8).

  In this way, only the first paper dust removal fan 56 is driven during forward printing in main scanning, and only the second paper dust removal fan 57 is driven during backward printing, and interlocked with the printing operation of the head unit 24. Thus, the paper dust on the printing tape A is blown away. For this reason, it is possible to prevent the paper dust from adhering to the nozzles of the inkjet head 26, and it is possible to promote the drying of the ink on the printed printing tape A. Reference numeral 59 in FIG. 1 denotes a cover 59 attached from the front surface to the upper surface of the support bracket 41, and the upper surface of the cover 59 opens corresponding to the plurality of tubes 401.

  Next, the maintenance means 10 will be described. The maintenance means 10 includes the above-described flushing box 61 that receives flushing ink, a storage unit 62 that stores the inkjet head 26 when not driven, and a cleaning that cleans the inkjet head 26 by manual operation or the like to eliminate nozzle clogging. There is a unit 63 and a wiping unit 64 for wiping the inkjet head 26 by manual operation or the like, both of which are provided on the machine base 2 in the vicinity of the X-axis table 27 that is off the tape feed path 4. Has been.

  As shown in FIGS. 1 and 3, the flushing box 61 has its mounting position coincident with the origin (reference position) in the X-axis direction, and the back side thereof is supported by the X-axis table 27. The flushing box 61 includes a box body 66 having a bottom frame, an ink absorber 67 laid on the bottom of the box body 66, and an upper edge of the box body 66 so as to hold the four peripheral edges of the ink absorber 67. And a frame-shaped retaining plate 68 fixed to the head portion, facing the head unit 24 at the origin position in the X-axis direction so as to cover from below. That is, all the ink jet heads 26 that are outside the printing area G facing this origin position are included in the ink absorber 67.

  The box body 66 has a predetermined gap with the Y-axis table frame 32, is supported on the back side by the X-axis table frame 31, and is positioned so that the right half overlaps the Y-axis table 28. The left half of the box body 66 located off the left side of the Y-axis table 28 is provided with an ink reservoir 69 that protrudes downward from the box body 66.

  The ink absorber 67 is composed of a plurality of ink absorber pieces 67a laid in a vertical and horizontal posture, and the flushing ink ejected by the flushing is absorbed by each ink absorber piece 67a. In this case, since the flushing ink penetrates deeply from the boundary portion of each ink absorber piece 67a and is absorbed therein, it does not accumulate (dry and accumulate) on the surface of the ink absorber 67.

  As described above, the flushing box 61 can move in the Y-axis direction together with the X-axis table 27 while maintaining the origin position in the X-axis direction. Therefore, in printing, the head unit moved back to the origin in the X-axis direction. 24 always faces. Accordingly, during the printing operation, flushing can be performed at the acceleration start position or the deceleration start position (reference position) of the head unit 24, that is, every time the head unit 24 reciprocates (printing of two lines). Printing processing time can be shortened. The flushing is preferably performed first at the start of printing.

  As shown in FIGS. 1 and 9, the storage unit 62 is arranged at a substantially central portion on the machine base 2, and each of the four cap supports 71 on which three storage caps 72 (cap members) are mounted. In addition, a storage base frame 73 that accommodates each cap support 71 slidably in the vertical direction, and a total of 12 storage caps 72 are separated toward the head unit 24 via the four partial cap supports 71. A cap moving mechanism 74 to be brought into contact with. The cap moving mechanism 74 is connected to the controller 11, and the storage base frame 73 is screwed to a predetermined position of the base plate 13 through six fixing portions 76 formed on the left and right sides. Has been.

  Each storage cap 72 includes a cap body 77, an anti-drying material 78 laid on the bottom of the cap body 77, and a seal member 79 formed of a substantially square O-ring attached to the upper end of the cap body 77. Yes. The drying prevention material 78 is impregnated with an ink solvent and maintained in a high humidity state, and effectively prevents the inkjet head 26 (ink nozzle) from drying. The seal member 79 is configured so as to be in close contact with the bottom surface (ink nozzle forming surface) of the main body portion 26a of the inkjet head 26, and seals this.

  The cap supports 71 are connected to each other and guided to move up and down in the left and right positions to the storage base frame 73. Each cap support 71 is a head unit 24 so that three storage caps 72 mounted side by side on the cap support 71 correspond to the three inkjet heads 26 (each head group 48) mounted on the partial carriage 44. The storage base frame 73 is arranged in a staggered manner corresponding to the partial carriages 44. That is, each cap support 71 is accurately positioned and attached at a predetermined position of the storage base frame 73 so that each storage cap 72 is appropriately in close contact with each corresponding inkjet head 26.

  The cap moving mechanism 74 moves the storage cap 72 between a sealing position that seals the inkjet head 26 and a standby position that is separated from the inkjet head 26. That is, the cap moving mechanism 74 is configured to raise and lower the four cap supports 71 integrally, and always maintains the four cap supports 71 at the lowering standby position. Then, when the head unit 24 faces directly above the four cap supports 71 for storage, the cap moving mechanism 74 is driven to raise all the storage caps 72 via the four cap supports 71. In close contact with all the inkjet heads 26. Thereby, at the time of storage, that is, when printing is not driven, each inkjet head 26 can be individually sealed and kept at high humidity.

  Further, in such a configuration, the three storage caps 72 are assembled to the cap support 71 with high accuracy and are attached to the storage base frame 73 with high accuracy. The cap 72 and the cap support 71 can be assembled with high accuracy. Even if any one of the storage caps 72 becomes defective, it can be easily and quickly replaced by each cap support 71 unit without impairing the mounting accuracy.

  Although not shown, the storage unit 62 is provided with a detection switch for detecting the standby position of the cap support 71. When the detection switch in the OFF state is in the non-detection state, scanning of the head unit 24 ( Cannot be moved). That is, the detection switch connected to the controller 11 interlocks the movement of the head unit 24 when each cap support 71 is in the sealing position. As a result, the movement of the sealed head unit 24 is canceled, and damage to the head unit 24 and the storage cap 72 due to a software malfunction is prevented.

  As shown in FIGS. 1, 10, and 11, the cleaning unit 63 includes two partial units 63a and 63b. The partial units 63a and 63b are supported by a cleaning base plate 81 fixed on the base plate 13. In addition, they are arranged so as to be displaced from each other in the Y-axis direction.

  Each of the partial units 63a and 63b of the cleaning unit 63 accommodates a cleaning cap support 82 on which three cleaning caps 83 (cap members) are mounted, and a cleaning cap support 82 slidably in the vertical direction. A cleaning support frame 84, a cleaning cap moving mechanism 85 that moves the three cleaning caps 83 toward and away from the head unit 24 via the cleaning cap support 82, and ink via each cleaning cap 83. Ink pumps (two in total) 86 for sucking the water. The cleaning cap moving mechanism 85 and each ink pump 86 are connected to the controller 11 described above.

  Each cleaning cap 83 includes a cap main body 87, an ink absorbing material 88 laid on the bottom of the cap main body 87, and a seal member 89 attached to the upper end of the cap main body 87. Each seal member 89 is configured to be able to be in close contact with the bottom surface (ink nozzle forming surface) of the main body portion 26a of each inkjet head 26, and seals this.

  Each cleaning cap support 82 is guided to each cleaning support frame 84 at its left and right positions. In addition, the cleaning cap support 82 is mounted with three cleaning caps 83 side by side so as to correspond to the three side-by-side inkjet heads 26 (each head group 48) mounted on the partial carriage 44. .

  That is, referring to FIG. 6 as well, the pair of cleaning cap supports 82 includes two adjacent head groups 48 (first and second head groups 48-1 and 48-2 and third and fourth head groups 48). The head groups 48-3 and 48-4) are disposed so as to be displaced in the Y-axis direction so as to correspond to the first head group 48-1 (and the third head group 48-3). The cap support 82 for cleaning (CL1 shown) corresponds to the second head group 48-2 (and the fourth head group 48-4), and the other cleaning cap support 82 (CL2 shown).

  Each cleaning cap moving mechanism 85 includes a motor or the like disposed on a side portion of each cleaning support frame 84, and each cleaning cap support 82 is moved up and down individually (synchronously) in association with the controller 11. Each cleaning cap support 82 is moved up and down between a sealing position for sealing the inkjet head 26 and a standby position separated from the inkjet head 26. Therefore, each cleaning cap support 82 is normally maintained at the standby position.

  Each cleaning cap moving mechanism 85 is driven to raise each cleaning cap support 82 only when the head unit 24 faces directly above the cleaning unit 63 for cleaning. Although not shown in the drawing, the cleaning unit is also provided with a detection switch for detecting the standby position of the cleaning cap support 82 as in the case of the storage unit 62, and each cleaning cap support 82 is sealed. When in position, the movement of the head unit 24 is interlocked.

  Here, the cleaning operation will be described with reference to FIGS. 6 and 10. When the first head group 48-1 and the second head group 48-2 face the cleaning unit 63 for cleaning, a cleaning cap moving mechanism is provided. 85 is driven, and all the cleaning caps 83 are raised and brought into close contact with the head unit 24 via the pair of cleaning cap supports 82. Subsequently, each ink pump 86 is driven to suck ink from all the ink nozzles of each inkjet head 26 of the first head group 48-1 and the second head group 48-2 (cleaning).

  Then, the cleaning cap moving mechanism 85 is driven again to lower all the cleaning caps 83, and the XY moving mechanism 25 is driven to move the third head group 48-3 and the fourth head group 48-4. Then, it is moved in the Y-axis direction so as to face the pair of cleaning cap supports 82. Then, the cleaning caps 83 are lifted and pump suction is performed, and ink is suctioned from the inkjet heads 26 of the third head group 48-3 and the fourth head group 48-4. On the other hand, the ink sucked by each ink pump 86 is guided to the waste ink tank 18 via the tube 401 from the ink absorbing material 88.

  As shown in FIG. 11, each cleaning support frame 84 is engaged with the two positioning holes 90 on the near side formed in the cleaning base plate 81, and is attached to the cleaning base plate 81 at two locations on the back side. It is screwed. The cleaning base plate 81 is screwed to a predetermined position of the base plate 13 through a total of four fixing portions 91 formed at the left and right intermediate portions.

  With this configuration, like the storage unit 62, in the cleaning unit 63, the three cleaning caps 83 are assembled to the cleaning cap support 82 with high accuracy and are attached to the cleaning base plate 81 with high accuracy. Therefore, as a result, the cleaning caps 83 and the cleaning cap support 82 can be assembled with high accuracy. Further, even if any one of the cleaning caps 83 becomes defective, it can be easily and quickly replaced by each cleaning cap support 82 unit without impairing the mounting accuracy.

  As shown in FIGS. 1 and 10, the wiping unit 64 is disposed adjacent to the cleaning unit 63 in the X-axis direction of the head unit 24 and out of the printing area G of the printing tape A. . The wiping unit 64 includes two partial units 64a and 64b. The partial units 64a and 64b are supported by a wiping base plate 94 fixed on the base plate 13 and each partial unit 63a of the cleaning unit 63. , 63b so as to correspond to two adjacent head groups 48 (first and second head groups 48-1 and 48-2 and third and fourth head groups 48-3 and 48-4). , And are displaced in the Y-axis direction.

  Each of the partial units 64 a and 64 b of the wiping unit 64 includes a resin wiper blade 95 and three solenoids 96 for rotating and lifting the wiper blade 95 side by side, and each solenoid 96 is connected to the controller 11. ing. The solenoid 96 is controlled by the controller 11, and when the head unit 24 faces directly above the wiping unit 64 for wiping, energizing the head unit 24 causes the wiper blade 95 to turn up and face the wiping position. Is brought into contact with the corresponding inkjet head 26. On the other hand, when the magnet is demagnetized, the wiper blade 95 is rotated and lowered to be separated to the retracted position so as not to interfere with the main scanning and sub scanning movements of the head unit 24.

  As a result, the XY movement mechanism 25 is driven with respect to the wiper blade 95 facing the wiping position, and the head unit 24 is moved by a minute distance in the X-axis direction to perform the wiping operation. The ink adhering to the ink nozzle surface) is removed, and an appropriate meniscus of the ink nozzle can be held.

  In the same manner as the cleaning operation, the wiping operation is performed by the third head group 48-3 and the fourth head group 48-4 after the processing of the first head group 48-1 and the second head group 48-2 is completed. Processing is performed. That is, the wiping unit 64 and the XY movement mechanism 25 cooperate to wipe all the inkjet heads 26 in two steps.

  Thus, the maintenance unit 10 can appropriately protect the inkjet head 26 because the storage unit 62 for storing the inkjet head 26 is independent of the flushing box 61 and the cleaning unit 63. That is, it is possible to avoid the influence of ink stains due to ejection (suction) compared to the case where the inkjet head 26 is stored in the cleaning unit 63 or the like.

  Although the storage base frame 73, the cleaning support frame 84, and the wiping base plate 94 are configured separately, they may be configured as one large base plate (maintenance plate).

  Next, the tape feeding means 7 (paper feeding device), the tape supply means 6 and the tape winding means 8 will be described for tape feeding. FIG. 12 is a diagram schematically showing the tape feeding means 7, and as shown in FIG. 1 and FIG. 1, the tape feeding means 7 is on a base plate 13 disposed substantially at the center of the tape feeding path 4. A suction table 101 and a tape feed mechanism 102 that is disposed with the suction table 101 interposed therebetween and feeds the print tape A along the tape feed path 4 are provided.

  The suction table 101 includes a housing 104 fixed to the base plate 13, a suction plate 105 attached to the upper surface of the housing 104, a triple (several) suction chamber 106 formed below the suction plate 105, The three suction fans 107 facing the lower portions of the respective suction chambers 106 are configured to suck the print tape A by air. The suction plate 105 is formed with a length of 30 inches in the extending direction of the tape feed path 4 in accordance with the length of the X-axis table 27, and corresponds to the maximum width printing tape A (tape width 150 mm). Has a width. Each printing tape A is fed with one end in the width direction (the back side of the suction plate 105) as a fixed position (end surface reference), and the positioning in the width direction is performed prior to the suction table 101. (To be described later).

  A large number of suction holes 108 communicating with the respective suction chambers 106 are formed on the upper surface of the suction plate 105, and the suction plate 105 sucks the printing tape A through the numerous suction holes 108 so as not to float. It is placed on the upper surface with a force and a predetermined flatness. The suction plate 105 is disposed horizontally, and faces the head unit 24 (inkjet head 26) moving in the X and Y directions directly above the suction plate 105 in parallel. That is, the printing tape A adsorbed on the upper surface of the suction plate 105 faces the inkjet head 26 in parallel with a predetermined gap for ink ejection.

  Each suction fan 107 is connected to the controller 11 and is driven in synchronism with the main power ON operation. That is, the printing tape A is sucked not only when the feeding of the printing tape A is stopped but also during the feeding operation of the printing tape A. In particular, the feeding of the printing tape A is performed against the suction force of the suction table 101. Is called. In the case of the printing tape A having a width other than the maximum width, a large number of suction holes 108 are arranged in order to effectively avoid flying bends of ejected ink due to air leaking from the suction holes 108.

  Specifically, as shown in the schematic plan views of FIGS. 1 and 13, the plurality of suction holes 108 constitute a plurality of suction hole arrays 109 along the length direction of the printing tape A, and the printing tape A The two suction hole arrays 109 for sucking both edges in the width direction of the printing tape A are disposed close to both ends in the width direction of the printing tape A. That is, both edges (edges) of various printing tapes A from 50 mm width to 150 mm width at a pitch of 10 mm are reliably sucked, and the floating edges of the various printing tapes A are prevented. Air is leaked from the suction holes 108 that are not blocked by the printing tape A, but the relationship between the performance of the suction fan 107 and the total suction hole area is designed so as not to affect the suction performance.

  In this case, as shown in FIG. 13, in the range of 50 mm in front from the end surface on the back side of the suction table 101, the pitch between the suction hole arrays 109 is 10 mm or less (6 mm in the figure), and the range from 50 mm to 150 mm. Then, corresponding to the width pitch of the printing tape A, the pitch between the suction hole arrays 109 is 10 mm. Thereby, since the printing tape A on the suction table 101 can be leveled so as not to float, the horizontal posture of the printing tape A can be maintained even during printing and after printing.

  More specifically, with respect to each edge of the various printing tapes A, the adjacent suction hole arrays 109 and 109 are positioned so that one side is about 1.0 mm inside from the tape end (covered with the tape), and the other is It is a position (open) that is about 9.0 mm outside from the tape end. In this case, air leaks from the other suction hole array 109 on the outer side, but is sufficiently separated from the ink jet head 26, so that the flying curve of the ink is effectively prevented. In addition, the both ends of the length direction side of the printing tape A can also be sucked appropriately.

  A large number of suction holes 108 are arranged in a staggered manner, and the adjacent suction hole arrays 109 are displaced in the length direction of the printing tape A. Thereby, the suction site | part which any one suction hole 108 takes charge can be integrated. For this reason, compared with the case where the suction holes 108 are arranged in a grid pattern, the number of the suction holes 108 can be reduced without reducing the suction force.

  Exhaust air from the three suction fans is transferred from three through holes (not shown) formed in the base plate 13 correspondingly to the space on the controller 11 side below the base plate 13. Led. However, the exhaust air may be guided to a drying area H, which will be described later, on the downstream side of the suction table 101 and where the printed printing tape A is waiting (see FIG. 12). ).

  As shown in FIGS. 1, 12, and 14, the tape feeding mechanism 102 includes a tape feeding roller 111 disposed on the base plate 13 on the downstream side of the tape feeding path 4, and a tape that rotationally drives the tape feeding roller 111. A feed motor 112, a feed roller 113 that is disposed downstream of the tape feed roller 111 in the feed direction and feeds to the tape take-up means 8, and a guide that is disposed immediately downstream of the suction table 101 in the feed direction and closest to the upstream side. A roller 114, a grip roller 115, a guide roller 116 disposed on the upstream side in the feed direction of the grip roller 115, and a width guide portion 117 (width regulating means) disposed on the upstream side in the feed direction of the guide roller 116. Yes.

  Further, the tape feeding mechanism 102 is provided between the base plate 13 and the shelf plate 14 between the tape feeding roller 111 and the guide roller 114, on the downstream side in the feeding direction of the guide roller 114, and below the intermediate roller 118. And a lower roller 119 disposed. That is, the printing tape A fed by the tape feeding mechanism 102 is routed substantially at a right angle through the guide roller 114 after printing, and is once sent downward from the base plate 13 and circulates around the lower roller 119 and the like. Thereafter, the path is changed again upward and sent, and the paper is sent to the tape winding means 8 by the feed roller 113. The base plate 13 has the two openings 17 and 17 that allow the printing tape A to be fed with the Y-axis table 28 interposed therebetween.

  The delivery roller 113 is composed of a pair of upper and lower rollers that sandwich the printing tape A, and rotationally feeds the printing tape A outward from the machine base 2. The delivery roller 113 is rotatably supported by a delivery plate 121 that protrudes leftward from the machine base 2 and is fixed thereto.

  The tape feed roller 111 is composed of a drive roller 123 and a driven roller 124 having a grip roller structure facing each other with the printing tape A interposed therebetween. A tape feed motor 112 is connected to the drive roller 123, while the driven roller 124 is interposed. The drive roller 123 is urged by the spring 125. The tape feed motor 112 is composed of a stepping motor and is connected to the controller 11 to control the rotation of the tape feed roller 111.

  In other words, the rotation of the tape feed roller 111 (drive roller 123) is controlled by the controller 11 so that the entire tape feed and stop in the machine base 2 including the feed on the suction table 101 can be performed with high accuracy. It rotates in synchronization with the unit 24. Specifically, the detection mark E printed on the printing tape A together with the unit image B is detected, the tape feeding roller 111 is rotated based on the calculated number of steps, and the feeding of the printing tape A is stopped. (Details will be described later).

  The grip roller 115 includes a pair of rollers 115 a and 115 b that sandwich the printing tape A at the front portion (upstream side) of the suction table 101. The pair of rollers 115 a and 115 b are rotatably supported by the suction table 101. At the same time, the printing tape A is placed horizontally on the suction table 101.

  The guide roller 114 is rotatably supported by the rear portion (upstream side) of the suction table 101 and is in rolling contact with the non-printing surface of the printing tape A. The guide roller 114 is positioned horizontally with the grip roller 115 with the suction table 101 interposed therebetween. Accordingly, the printing tape A is fed horizontally on the suction table 101 from the grip roller 115 to the guide roller 114. Further, the above-mentioned printing area G (30 inches) is constituted by the suction table 101 between the guide roller 114 and the grip roller 115.

  The lower roller 119 is rotatably supported by a lower support plate 129 fixed on the shelf plate 14, and the intermediate roller 118 is rotatably supported by an intermediate support plate 128 fixed between the base plate 13 and the shelf plate 14. Yes. The intermediate roller 118 is disposed substantially directly below the guide roller 114, and the lower roller 119 is disposed somewhat upstream from the intermediate roller 118 (larger in the X-axis direction). Accordingly, the printing tape A is sent between the guide roller 114 and the lower roller 119 with the path being changed somewhat backward via the intermediate roller 118. Between the lower roller 119 and the guide roller 114, the above-described drying area H having a length substantially the same as the printing area G and where the printed portion of the printing tape A is naturally dried is configured.

  A tape feed sensor 130 is disposed on the intermediate support plate 128 at a position facing the tape feed path 4 (printing tape A) and parallel to the intermediate roller 118. The tape feed sensor 130 (detection means) is constituted by a reflection type optical sensor and is connected to the controller 11 described above. The tape feed sensor 130 detects the detection mark E of the printing tape A, and controls the drive operation of the tape feed motor 112 based on the detection result. As a result, the feeding of the printing tape A, that is, the intermittent feeding in units of the unit printing area C where printing is performed by one tact printing operation is performed with high accuracy.

  Further, the tape feed sensor 130 is located at a predetermined distance from the front end of the printing area G (FIG. 14, specified distance: M). One detection mark E printed in the unit print area C is printed at a position that is lower than the specified distance from the rear end of the unit print area C to the downstream side in the tape feeding direction. That is, the distance from the rear end of the unit print area C to the print position of the detection mark E is set to be the same as the distance from the front end of the unit print area C to the position of the tape feed sensor 130 (detection position of the detection mark E). Thus, the above-described highly accurate tape feeding is realized (see FIG. 17 for details).

  On the other hand, on the upstream side of the tape feeding path 4, the guide roller 116 faces the upper grip roller 115 and is rotatably supported by the suction table 101. In this case, the print tape A is fed along the vertical tape feed path 4 between the grip roller 115 and the guide roller 116 as between the guide roller 114 and the intermediate roller 118. Further, a neutralizing brush 131 is disposed between the grip roller 115 and the guide roller 116 so as to face the printing tape A, and the neutralizing brush 131 slidably contacts the sent printing tape A to ground the printing tape A.

  As shown in the enlarged views of FIG. 12 and FIG. 15, the width guide portion 117 includes a bottom plate 133 fixed on the base plate 13, and a front mounting plate 134 erected on the bottom plate 133 so as to be separated in the front-rear direction. And a fixed guide plate 135 on the rear side, a moving guide plate 136 configured to be movable between the mounting plate 134 and the fixed guide plate 135, and a plurality of both ends supported by the mounting plate 134 and the fixed guide plate 135. A (five) feed member 137 and a plurality (two) of plate guides 138 and a leaf spring part 139 for applying tension to the printing tape A are provided, and the fixed guide plate 135 and the movable guide plate 136 are paired. The width of the printing tape A fed to the machine base 2 is regulated.

  The bottom plate 133 is positioned on the left half of the mounting plate 134 and the like, and the mounting plate 134 and the fixed guide plate 135 are fixed to the fixed plate at a portion 141 where the lower left half is bent outward. Further, a leaf spring portion 139 is attached to the right half of the attachment plate 134 and the fixed guide plate 135 so as to straddle them.

  The fixed guide plate 135 is disposed in parallel to the end surface on the back side of the suction table 101, and the inner surface guides the width of the printing tape A in the extending direction from one side. The width guide on the other side of the printing tape A is formed on the inner surface of the moving guide plate 136. That is, the width guide of the printing tape A is configured by appropriately moving the moving guide plate 136 relative to the fixed guide plate 135 with the fixed guide plate 135 as a reference. Further, tape guide portions 142 and 142 for guiding the reception of the printing tape A to be fed are formed on the right end portions of the fixed guide plate 135 and the moving guide plate 136 so as to expand outward.

  Each feed member 137 is supported at both ends by the mounting plate 134 and the fixed guide plate 135 without interfering with a plurality of loose insertion holes of the moving guide plate 136 formed at the intermediate portion corresponding thereto. . Further, the adjacent feed members 137 are supported in a state where they are displaced from each other vertically.

  That is, in this case, the five feed members 137 are arranged in parallel on the upper side and three feed guides 144 that are in sliding contact with the non-printing surface of the printing tape A, and on the printing surface of the printing tape A arranged in parallel on the lower side. It comprises two rotating rollers 145 that are in rolling contact. The printing tape A that is fed through the tape guide portion by the five feed members 137 is sent while being curved in the forward direction with the path changed to a wave shape. As a result, the curl of the printing tape A fed out from the tape supply means 6 can be effectively removed and the printing tape A can be sent to the guide roller 116 (scraping means).

  On the other hand, each plate guide 138 is made of a round bar-like member, and a pair is arranged on the left and right (upstream and downstream in the tape feeding direction). Specifically, the pair of plate guides 138 are disposed above the feed member 137, and are disposed on the left and right sides of the upper intermediate feed guide 144 and at positions immediately above the pair of lower rotation rollers 145. Both ends are fixed to the mounting plate 134 and the fixed guide plate 135.

  Further, each plate guide 138 is loosely fitted in a pair of guide holes formed in the middle portion of the plate guide 138 so as to guide them, and guides the slide movement of the movement guide plate 136 in the front-rear direction, and after the movement. The movable guide plate 136 is fixed at a predetermined position in parallel to the fixed guide plate 135 via a fixing screw 149 described later.

  The movable guide plate 136 can change the width of the tape feed path 4, and has a width guide block 147 fixed to the upper outer side in addition to the play hole and the guide hole. It is configured to be freely fixed to each plate guide 138. The width guide block 147 includes a block main body 148 having a predetermined width, and a pair of fixing screws 149 disposed on the upper surface of the block main body 148 so as to be separated from each other. Each fixing screw 149 is provided at a position corresponding to each plate guide 138, and the moving guide plate 136 is fixed to each plate guide 138 by the fixing screw 149.

  That is, in a state where the fixing screw 149 is loosened, the moving guide plate 136 is positioned by moving the moving guide plate 136 in the left-right direction (tape width direction) according to the tape width, and in a state where the fixing screw 149 is tightened. Is configured to sandwich both end faces in the width direction of the printing tape A together with the fixed guide plate 135, and the lower end face thereof is in contact with the bottom plate 133. Thereby, the width guide of the printing tape A facing the suction table 101 is appropriately performed. The moving guide plate 136 has a structure in which the pair of rotating rollers 145 escapes by a notch portion formed in the moving guide plate 136 (see FIG. 15).

  The leaf spring portion 139 includes a spring support plate 151 extending across the lower right half of the fixed guide plate 135 and the attachment plate 134, a leaf spring 152 attached to the upper surface of the spring support plate 151, and the spring support plate 151. And a torsion coil spring biased upward.

  The spring support plate 151 is bent at both ends in the extending direction so that the base portions at both ends are supported by the lower end tip portions of the fixed guide plate 135 and the mounting plate 134, and a coil spring is provided at a portion opposite to the base portion. One end of 153 is locked. The other ends of the coil springs 153 are locked to the upper surfaces of the outer ends of the fixed guide plate 135 and the mounting plate 134, whereby the spring support plate 151 is supported while being urged upward by these plates. In addition, it is rotatable up and down around the base. A spring release lever 155 for rotating the spring support plate 151 is attached to the front end of the spring support plate 151 via a lever support.

  The leaf spring 152 is located below the right rotation roller 145, and has a spring fixing portion 156 fixed to the spring support plate 151, and a bent portion extending from the spring fixing portion 156 and extending below the rotation roller 145 with the printing tape A interposed therebetween. It is comprised with the roller sliding contact part 157 which abuts from. The roller slidable contact portion 157 in this slidable contact position is separated from the rotating roller 145 and retracted to a lower spaced position by operation of the spring release lever 155. That is, the leaf spring 152 is in sliding contact with the right rotation roller 145 with the printing tape A interposed therebetween, and applies tension to the printing tape A. Thereby, it is possible to apply a brake to the feeding of the printing tape A facing the printing area G (the suction table 101). In correspondence with the leaf spring 152, the moving guide plate 136 has a structure in which it escapes in the same manner as the rotating roller 145.

  In addition, the leaf spring 152 and the tape feed roller 111 arranged with the print area G interposed therebetween can hold the front and rear directions of the print tape A in the holding direction. The horizontal posture of the printing tape A is maintained together with the suction, and the pitch of the detection marks E for each unit printing area C can be made the same (described later).

  Further, the roller sliding contact portion 157 (guide pressing portion) of the plate spring 152 is a flat plate having a presser width that is inherent in the minimum width print tape A so as not to contact the end face of each print tape A having a different width. Each comb tooth piece 163 together with the sliding contact portion 161 and the flat plate sliding contact portion 161 constitutes a presser width so as to hold at least both ends in the width direction with respect to each printing tape A other than the minimum width. Comb-like sliding contact portion 162.

  Specifically, referring to FIG. 16, the flat sliding contact portion 161 has a presser width of 47 mm, for example, and is contained in the printing tape A having the minimum width (50 mm), and has a width of 10 mm. Corresponding to other types of print tapes A that increase, adjacent comb teeth 163 (for example, a presser width of 7 mm) are spaced apart by a predetermined interval (for example, 3 mm intervals), and correspond to each print tape A. The center of the gap between each comb tooth piece 163 coincides with the center of the width of each printing tape A.

  Therefore, for example, for a printing tape A having a width of 70 mm, a comb-like slide composed of a 47-mm flat-plate-sliding contact portion 161 and two 7 mm comb-tooth pieces 163 and 163 adjacent to each other. The contact part 162 is in sliding contact with each other, and tension is applied at a position away from each end face in the width direction of the printing tape A by a predetermined distance (1.5 mm). As a result, the plate-like sliding contact portion 161 and the comb-like sliding contact portion 162 are within the paper width with respect to the corresponding printing tape A, so that the leaf spring 152 does not contact the end face of the printing tape A. And since the both ends of the width direction of each printing tape can be pressed down effectively, suitable tension can be given to the printing tape of each width. In addition, the length of the comb-tooth piece 163 is 15 mm.

  Next, the tape supply means 6 will be described with reference to FIG. The tape supply means 6 is supported by a pair of front and rear supply support frames 171 facing the width guide portion 117 and fixed to the base plate 13, and a bracket 172 fixed to the angle member 12 of the machine base 2 below the supply support frame 171. A predetermined amount of slack (buffer) is provided on the printing tape A which is configured to be fed out and supplied to the tape feeding means 7 (width guide portion 117). The bracket 172 is provided with a supply reel 174 that is wound in a roll shape and rotatably supports the printing tape A, and a torque limiter 175 that is pivotally attached to the supply reel 174.

  The pair of supply support frames 171 includes a supply guide roller 181 that guides the feed of the printing tape A fed from the feed reel 174 upward, and a supply that is positioned in parallel with the feed guide roller 181 on the downstream side of the feed guide roller 181. A roller 182, a supply motor 183 that rotationally drives the supply roller 182, a horizontal plate 184 that passes between the supply guide roller 181 and the supply roller 182, and an adjustment roller that is positioned below the supply roller 182 in the feed direction downstream 185 and a supply guide member 186 facing the width guide portion 117 on the downstream side in the feed direction of the adjustment roller 185 are supported, and the adjustment roller 185 is interposed via an adjustment arm 187 supported by a pair of supply support frames 171. This is supported.

  The supply guide roller 181 and the supply roller 182 are rotatably supported by a pair of supply support frames 171 and cause the printing tape A to face the horizontal plate 184 horizontally. The supply guide member 186 is brought into contact with the non-printing surface of the printing tape A sent from the adjustment roller 185 and guides the printing tape A to the width guide portion 117. The adjustment roller 185 is rotatably supported in a both-end supported state on the distal end side of the adjustment arm 187 supported on the base side by a pair of support frames. The adjustment arm 187 is configured to be rotatable in the vertical direction around the base side by a coil spring (not shown). That is, the adjustment roller 185 is movable in the vertical direction by the adjustment arm 187 that rotates.

  A light shielding plate is provided at the base of the adjustment arm 187, and two photo interrupters are provided on one support frame so as to face the movement locus of the light shielding plate. The two photo interrupters and the supply motor 183 are connected to the controller 11 described above, and the drive (feed / stop) of the supply motor 183 is controlled based on the detection result of the light shielding plate of the adjustment arm 187 by the photo interrupter. It has come to be. In other words, the supply tape 182 moves the print tape A forward by the supply roller 182 so that the amount of sag of the print tape A between the adjustment roller 185 and the supply guide member 186 is set to be equal to or greater than one tape feed amount (unit print area C). Feeding out.

  Thus, since the printing tape A can be provided with respect to the high-speed feeding of the printing tape A by the tape feeding means 7, the printing tape A can be fed from the feeding reel 174 without causing slippage and printing. The tape A can be saved without applying a large momentary tension.

  Next, the tape winding means will be briefly described with reference to FIG. The tape take-up means 8 includes a tape take-up reel 191 that is rotatably supported by the finisher body 20, a take-up roller 192 that is positioned immediately above the tape take-up reel 191, and a winding that drives the take-up roller 192 to rotate. Between the finisher 3 and the machine base 2, the take-up motor 193, the take-up guide roller 194 that approaches and faces the take-up roller 192, the width regulating portion 195 that regulates the width direction of the printed printing tape A, And a presser roller 196 positioned in the position. The printed printing tape A sent from the tape feeding means 7 is guided to the width restricting portion 195 via the press roller 196, where the width guide for the tape winding is performed, and the tape take-up reel 191 is wound up into a roll.

  The width restricting portion 195 has a structure similar to that of the width guide portion 117 provided on the upstream side of the tape feeding means 7 and feeds the printing tape A in a wave shape and operates a push rod 198 provided so as to protrude forward. It is possible to correspond to the printing tape A of each width. The winding roller 192 is composed of a driven roller and a driving roller that are opposed to each other with the printing tape A interposed therebetween. This driving roller is connected to a winding motor 193 and is urged toward the driving roller by a spring 197 provided with the driven roller. ing. The operation panel 22 is used to adjust the tape winding torque so that the printing tape A is properly wound on the tape winding reel 191.

  Here, printing of an image will be described with reference to FIG. In this ink jet printer 1, the tape feeding means 7 is driven following the tape supply means 6, and the portion to be printed on the printing tape A, that is, the unit printing area C is sent onto the suction table 101 which is the printing area G. In this state, the suction table 101 is driven, and the unit printing area C of the printing tape A that has stopped feeding is sucked by the suction table 101 and is held stationary. Subsequently, the X / Y moving mechanism 25 is driven to move the head unit 24 in the main scanning direction and the sub-scanning direction, and ink is ejected from each inkjet head 26 of the head unit 24 to print an image. . During the printing operation, the paper dust removing mechanism 43 is in a driving state and flushing is appropriately performed.

  The printing of the image is to continuously print a plurality of label portions as the unit image B with a gap (non-printing portion Ab) between them, and by repeating printing and feeding of the printing tape A, A desired number of unit images B are printed on the printing tape A. Along with this unit image B, a detection mark E for representing the feed amount of the unit print area C and an image position mark D for representing the position of each unit image B are printed.

  The unit print area C includes a part for printing the unit image B (image print area AB), and a part for printing the detection mark E and the image position mark D located outside the image print area AB (mark print area AC). Is set. The detection mark E is printed at a specified distance M from the rear end of the unit print area C in the mark print area AC. In addition, the image position mark D is printed in the mark printing area AC in the vicinity of the upper portion thereof corresponding to each unit image B.

  The length of the unit print area C can be changed to an arbitrary length depending on the print content such as the image size to be printed, but the maximum length is 30 inches corresponding to the print area G. Specifically, when the printing content is determined, the length of the unit printing area C in the printing operation of one tact on the printing tape A is determined, and then the printing position of the detection mark E in the unit printing area C is the unit printing. It is set at a position where the specified distance M is from the rear end of the region C.

  When the printing of the unit image B, the detection mark E, and the image position mark D in the printable area is completed, the XY movement mechanism 25 is stopped, and then the tape feeding means 7 is driven to print the printed unit. The printing area C is fed, and this feeding is controlled based on the detection result of the detection mark E by the tape feeding sensor 130, and the next unit printing area C is introduced onto the suction table 101. Here, the X / Y moving mechanism 25 is driven again to move the head unit 24 in the main scanning direction and the sub-scanning direction toward the original print start position P1 (see FIG. 4). (Unit image B, detection mark E, and image position mark D) are printed.

  In this way, the printing tape A is held on the suction table 101, and printing on one unit printing area C by the main scanning and sub-scanning of the head unit 24 and the next unit printing area C are taken on the suction table 101. Since the arbitrary number of labels are printed on the long printing tape A by repeating the feeding introduced in step 1, printing at the dot level can be performed with high accuracy. In addition, the ratio of the acceleration / deceleration time to the actual printing time of the head unit 24 can be extremely reduced, and dead time other than actual printing can be extremely reduced. Therefore, the printing time can be shortened, and the number of labels required can be printed without waste.

  Further, since the tape feed amount sent for one tact printing operation is the length of the unit print area C, and the print position of the detection mark E with respect to the unit print area C is set to a predetermined position, the rear end of the unit print area C Can be accurately stopped at the position of the front end before feeding. As a result, even if the tape feed amount is appropriately changed depending on the type of unit image B, the print position of the detection mark E is appropriately changed so as to be the predetermined position, so that the detection position can be changed without changing the detection position. Tape feed / stop accuracy can be ensured. Note that the drive operation of the tape feed motor 112 is controlled to make the tape feed stop accuracy highly accurate (details will be described later).

  In the above embodiment, the head unit 24 is moved to the original print start position by the XY movement mechanism 25 while the print tape A is being fed, and printing is always started from the print start position P1. May be. Alternatively, printing may be performed on the printing tape A only when the head unit 24 is moved to the right in the main scanning direction, that is, only when the head unit 24 is moved in the forward direction.

  In the latter case, the paper dust removing mechanism 43 has a processing flow as shown in FIG. As shown in the figure, when printing only in the forward direction is selected and a print start command is issued (S1), a flushing operation is first performed (S2), and then the first paper dust removing fan on the forward direction side. 56 is driven (S3). That is, the driving of the second paper dust removing fan 57 in the backward direction is always stopped. In this state, printing is performed only when the head unit 24 is moved in the forward direction in the main scanning direction, and the printing is performed in the backward direction before and after the sub-scanning to return to the origin position of the X axis, and then again in the forward direction. Move to print the next line (S4). Then, after all the series of printings are completed, the driving of the first paper dust removing fan 56 is stopped in synchronization with the printing termination command (S5: Yes) (S6).

  Next, the ink supply means 9 will be described with reference to FIG. The ink supply unit 9 is provided on the shelf plate 14 and stores a large amount of each color ink, and supplies each color ink from the main tank unit 211 provided on the base plate 13 to each inkjet head 26. A sub tank unit 212 and a tube unit 213 for connecting the main tank unit 211, the sub tank unit 212, and the inkjet head 26 are provided. The main tank unit 211 is disposed at a position lower than the sub tank unit 212, and the sub tank unit 212 is disposed at a position somewhat lower than the ink jet head 26 in order to prevent ink dripping.

  Specifically, the main tank unit 211 pressurizes and supplies ink to the sub-tank unit 212, and the ink stored in the sub-tank unit 212 is supplied to the ink by receiving the pump action (ink discharge) of the inkjet head 26. That is, ink supplied with pressure from the main tank unit 211 is pressure-cut by the sub tank unit 212 and supplied to the inkjet head 26.

  Prior to detailed description of each unit of the ink supply means 9, the entire ink supply system will be described in more detail with reference to FIG. 19 and divided into six colors (K, C, LC, LM, M, and Y). In order to correspond to four head groups 48 in which the ink nozzle row groups 47 are arranged side by side in the three inkjet heads 26, that is, to correspond to 24 ink nozzle rows composed of a total of 12 ink jet heads 26. The tank unit 211 includes one ink cartridge 216 (total of six) for each color, and the sub tank unit 212 includes two intermediate ink packs 351 (total of twelve) for each color.

  As a result, each color ink in the ink cartridge 216 is supplied to 24 ink nozzle rows by repeating two branches twice by the tube unit 213. Therefore, the number of ink cartridges 216 with respect to a plurality of ink jet heads 26 (a plurality of ink nozzle rows) can be reduced, and the degree of freedom in arrangement of the ink cartridges 216 can be provided. In addition, the pressure loss can be reduced as much as possible in the ink flow path to the ink jet head 26 by the favorable arrangement of the tube unit 213 and the like.

  Next, the main tank unit 211 will be described in detail with reference to FIG. The main tank unit 211 includes an ink cartridge 216, a pressure tank 217 that detachably accommodates the ink cartridge 216, and an air supply mechanism 218 that supplies pressurized air to the pressure tank 217. A plurality (six) of pressure tanks 217 are provided for each color, while the air supply mechanism 218 is configured as a single unit, and pumps up the ink in the ink cartridge 216 and supplies it to the sub tank unit 212.

  As shown in FIG. 20, each ink cartridge 216 includes a resin cartridge case 220 having an outer shell and an ink tank 221 accommodated in the cartridge case 220, and the ink tank 221 is not airtight in the cartridge case 220. Each cartridge case 220 is configured exclusively for each ink color. The main part of the ink tank 221 is a bag-shaped pack body 223 having deformable flexibility, and has a resin ink supply port 224 attached to one end of the pack body 223.

  The pack body 223 is formed in a bag shape by thermally welding two film sheets at the peripheral edge portion thereof, and constitutes a deformable storage space 225 that stores a large amount of ink inside. That is, the pack body 223 is formed by bonding two rectangular film sheets up and down to form two side surfaces, and is sealed by attaching an ink supply port 224 to one end of the side surface. 1 liter of ink is stored. The pack body 223 in a state where the storage space 225 is filled with ink is deformed into a flat state by the supply and use of ink so that two film sheets spaced apart from each other are in close contact with each other.

  The ink supply port 224 has a predetermined strength made of a resin material, and includes a base-side mounting hole 226 on the pack body 223 side, and an outer flange 227 formed integrally with the mounting hole 226. It consists of The flange part 227 has a circular opening 228 that communicates with the storage space 225 and serves as an ink outlet, at the center thereof, while the outer shell is formed in a circular shape. The ink tank 221 is positioned and fixed in a locking groove 245 described later formed in the cartridge case 220 through the flange portion 227.

  Although not shown, the opening 228 is sealed with a seal in order to prevent ink from flowing out of the ink cartridge 216 before being attached to the pressure tank 217, and ink provided in the pressure tank 217 at the same time as the attachment. The seal is released by the supply needle 286 (the sealing film is broken), and the ink supply port 224 is connected to the connection port 285 of the pressure tank 217 so that ink can be supplied from the ink cartridge 216.

  The cartridge case 220 is configured in a vertically divided structure with a lower case 231 formed in a deep container shape with an upper opening, and an upper case 232 that closes the opening of the lower case 231, and accommodates the ink tank 221 inside. A tank housing portion 233 is configured. The upper case 232 and the lower case 231 are engaged in a snap-in manner via the left and right edges, and the internal space (tank accommodating portion 233) is a non-sealed space. In other words, the inside of the cartridge case 220 communicates with the inside of the pressurized tank 217 so that the pressure in the tank accommodating portion 233 and the pressure in the pressurized tank 217 are always kept at the same pressure.

  The tank accommodating portion 233 has a predetermined depth for accommodating the pack main body 223, and a plurality of rib-like positioning pieces 234 that contact and hold the pack main body 223 project inwardly. Has been.

  As shown in FIG. 21, the cartridge case 220 includes a finger hook portion 235 that is bent at the upper end portion of one end portion in the longitudinal direction (front-rear direction) (the rear side in FIG. 20). Thus, it is possible to smoothly attach and detach to the pressurized tank 217. Also, a pair of front and rear concave portions 236 are formed on the lower surface of the cartridge case 220 at the left and right center positions. The concave portions 236 engage with convex portions 274 (described later) inside the pressurized tank 217, respectively. The mounting position of the cartridge case 220 to the pressurized tank 217 is regulated with a click feeling at the innermost part.

  Further, a case-side joint portion 241 is formed in a recessed manner at the other end portion (front side in FIG. 20) of the cartridge case 220 so as to face the finger hook portion 235. The case side joint portion 241 is formed at the left and right center portion of the cartridge case 220 and faces the ink supply port 224 of the ink tank 221. The case side joint portion 241 includes a fixed wall 242 on the ink tank 221 side that is located in a partition from the tank housing portion 233, left and right walls 243 continuous to the left and right of the fixed wall 242, and the fixed wall 242 and the left and right walls 243. It is partitioned by a continuous lower end wall 244.

  A locking groove 245 cut out in a substantially “U” shape from the upper end to the middle of the lower case 231 and a circular insertion hole 246 positioned immediately below the locking groove 245 are formed at the left and right central portions of the fixed wall 242. Is formed. The locking groove 245 has a groove width that allows the flange portion 227 of the ink supply port 224 to move, and a pair of retaining protrusions 247 that restrict the movement of the flange portion 227 are inward (opening direction). It is protruding. As a result, the locking groove 245 locks the ink supply port 224 to the groove bottom in a state of being prevented from being pulled out.

  Although both will be described in detail later, the insertion hole 246 is for preventing erroneous mounting of the ink cartridge 216, and an insertion pin 283 provided in the pressure tank 217 is inserted therein. In addition, in order to prevent erroneous mounting of the ink cartridge 216 of an ink color different from the corresponding one to the pressurized tank 217, the lower end wall 244 of the case side joint 241 has a notch 250 (for each ink color). (Predetermined two pieces) are formed, and the pressure tank 217 is provided with insertion protrusions 284 (predetermined two pieces) to be inserted into the notch portion 250. Reference numeral 251 in FIG. 20 denotes an ink absorber 251 placed on the upper surface of the lower end wall 244 at the lower side of the ink supply port 224, and ink leaking as the ink cartridge 216 is attached / detached. It is designed to absorb.

  As shown in FIG. 2, the pressurized tanks 217 are fixedly installed on the shelf board 14 in a three-stage two-row configuration, and the pressurized tanks 217 of the respective colors are allocated as shown in the figure. That is, black (K) and cyan (C) are arranged in the upper stage, light cyan (LC) and light magenta (LM) are arranged in the middle stage, and magenta (M) and yellow (Y) are arranged in the lower stage.

  As shown in FIGS. 21 and 22, the pressurized tank 217 is provided in the trunk portion 271 that forms the main part, a closing member 272 provided in one small opening of the trunk portion 271, and the other small opening in the trunk portion 271. The lid member 273 is configured so that a completely sealed space can be formed inside. The body 271 is integrally formed of an extruded aluminum material, and is configured to accommodate the ink cartridge 216 therein. Since the body part 271 is formed of an extruded shape member, the length of the body part can be arbitrarily set only by cutting a long material, and the body part 271 can be made lightweight. The body portion 271 is formed with a pair of front and rear projections 274 that engage with the recesses 236 of the ink cartridge 216 at the left and right center positions.

  The closing member 272 is attached to the back of the body 271 so as to completely close the small mouth of the back of the body 271 by an attachment plate 277 provided on the upper side of the body 271. A tank side joint portion 278 connected to the ink cartridge 216 mounted on the barrel portion 271 is attached to the closing member 272 so as to protrude toward the barrel portion 271 at the left and right intermediate positions. The tank side joint portion 278 is unitized with the closing member 272 and is located at the innermost portion of the pressure tank 217 and is formed in a shape corresponding to the case side connection portion of the ink cartridge 216.

  That is, as shown in FIG. 23, the tank side joint 278 protrudes on the front side of the connection portion main body 281, the connection portion main body 281 that forms the main portion, the attachment site 282 formed on the back side of the connection portion main body 281. The insertion pin 283 and a plurality of insertion protrusions 284 provided on the connection portion main body 281 for distinguishing ink types are arranged, and the ink cartridge 216 is completely attached to the connection portion main body 281 in the vicinity of the insertion pin 283. There is provided a connection port 285 to which the ink supply port 224 is connected.

  The connection port 285 is connected to the tube unit 213, and the ink supply needle 286 is attached to the ink supply port 224 in parallel with the insertion pin 283 (see FIG. 21). When the ink cartridge 216 is completely attached, the insertion pin 283 is inserted into the insertion hole 246 and the insertion protrusion 284 is inserted into the notch 250.

  Specifically, when the ink cartridge 216 is inserted into the pressurized tank 217 in the correct posture, the insertion pin 283 is inserted into the insertion hole 246. However, as shown in FIG. When the front and rear are reversed, that is, when the finger hook portion 235 is inserted toward the tank side joint portion 278, or as shown in FIG. The ink supply needle 286 is prevented from interfering with the cartridge case 220 (finger holding portion 235) by contacting the cartridge case 220 first. Accordingly, the ink supply needle 286 is not damaged by the insertion of the ink cartridge 216 in the wrong posture.

  Further, in order to prevent erroneous insertion of the ink cartridge 216 into the pressurized tank 217 other than the corresponding color, two insertion protrusions 284 are combined, and the ink cartridge 216 is cut out corresponding to the two insertion protrusions 284. Two portions 250 are formed. That is, as shown in FIG. 23B, the connection portion main body 281 has four attachment positions for providing the insertion protrusions 284 corresponding to the six colors of ink, and two of them are selected and combined. An insertion projection 284 is provided at each mounting position. Corresponding to this, the ink cartridge 216 is formed with two notched portions 250 selected and combined (four are formed for the sake of explanation in FIG. 20).

  Therefore, if an ink cartridge 216 different from the corresponding color is erroneously inserted into the pressurized tank 217, the insertion of the ink cartridge 216 is restricted by the insertion protrusion 284 (notch portion 250), and the ink cartridge 216 is not completely attached. . Thus, color mixing between different ink colors in the tube unit 213 (ink supply needle 286) is prevented, and the print quality is appropriately maintained.

  The ink cartridge 216 is formed with a circular hole 288 and a long hole 289 for positioning with the ink supply needle 286 so as to be close to the case side joint portion 241 (see FIG. 20). The lid member 273 can be completely closed with respect to the body 271 only when the ink cartridge 216 is completely attached to the pressure tank 217.

  As shown in FIG. 22, the lid member 273 is attached to the trunk portion 271 so as to be openable and closable so that the front end of the trunk portion 271 can be completely closed. The lid member 273 includes a frame-shaped support lid 301 fixed to the body portion 271, and a lid body 302 that opens and closes the fore end of the body portion 271. The lid body 273 is centered on a hinge 303 provided at the lower end portion of the support lid 301. 302 is opened downward.

  The hinge 303 is configured so that the opened lid body 302 can be slid downward, and a hinge pin 306 provided on the support lid 301 and a hinge hole 308 provided on the lid body 302 and engaged with the hinge pin 306 at the tip. The hinge piece 307 and the hinge hole 308 each extend in a direction substantially orthogonal to the lid main body 302. In addition, a rectangular packing 311 for closely attaching the lid main body 302 is provided at the open edge of the support lid 301. The support lid 301, the body portion 271 and the closing member 272 form a tank body that accommodates the ink cartridge 216.

  With such a configuration, when the lid member 273 is opened, the accommodation opening of the tank main body can be clearly seen, and the lid member does not get in the way when attaching and detaching the ink cartridge 216. Instead, the lid member can be used as a temporary table. Can do. Further, the lid member 273 is provided with a stopper 312 for restricting the opening position of the lid main body 302 so that the lid member 273 is opened more than necessary so as not to affect the lid member 273 of the other pressurized tank 217. . In addition, it is preferable to affix the label which described the applicable ink color on the front surface of the cover member 273, ie, the front surface of the lid body 302.

  The lid member 273 includes a pair of stoppers 315 that locks the lid member 273 in a closed state, and a detector 316 that detects a completely closed state of the lid member 273 by the stopper metal 315. The pair of stoppers 315 includes a hook 320 provided on the lid main body 302 and a hook 321 on which the hook 320 provided on the support lid 301 is locked. It is arranged at a point-symmetrical position. As a result, by bringing the stopper 315 into the locked state, the pressure-tight tank 217 is kept tight and tightly sealed. The detector 316 is connected to the controller 11.

  As described above, since the non-airtight ink cartridge 216 is accommodated and pressurized by the fully airtight pressure tank 217, the structure of the cartridge case 220 of the ink cartridge 216 can be simplified, and the ink The handling property of the cartridge 216 is improved. In order to smoothly open the lid member 273 when the ink cartridge 216 is in the pressurized storage state, an air release valve 325 is provided on each side of each pressure tank 217, that is, on the right side of the body 271. It has been. Each atmospheric release valve 325 is a three-way valve, receives pressurized air from the air supply mechanism 218, and moves the valve body when the pressurized air from the air supply mechanism 218 is reduced to a predetermined value or less. The inside of the pressurized tank 217 is opened to the atmosphere.

  As shown in FIG. 19, the air supply mechanism 218 is configured by connecting each pressurized tank 217 with an air pipe 331 as a dedicated ink supply, and is connected to each pressurized tank 217 to supply pressurized air. A pressure pump 332, a regulator 333 interposed in the air pipe 331 between the pressure pump 332 and the pressure tank 217, an air tank 334 for leveling the pulsating flow generated in the air pipe 331, and the air tank 334 And a switching valve 335 interposed in an air pipe 331 between each pressurized tank 217 and each atmosphere release valve 325.

  The regulator 333 feeds back the detected pressure (pressurizing pressure) to control the driving of the pressurizing pump 332, and keeps the pressure in the pressurizing tank 217 constant so that it is accommodated in the pressurizing tank 217. The pressure of the ink cartridge 216 is kept at the same pressure. The switching valve 335 is configured by an electromagnetic valve (electromagnetic three-way valve) and is connected to the controller 11. The switching valve 335 is normally opened so that air can be supplied to each pressure tank 217 and is switched when the ink cartridge 216 is replaced, thereby opening the inside of each pressure tank 217 to the atmosphere. It can be done.

  Specifically, when the switching valve 335 in the normal state is switched, the air in the air pipe 331 connected to the switching valve 335 from each pressurized tank 217 is released from the switching valve 335, and in conjunction with each air, Each valve body of the release valve 325 moves. That is, each atmosphere release valve 325 is switched, and each pressurized tank 217 is in an atmosphere release state. Thereby, each pressurized tank 217 can be supplied with appropriate pressurized air and can be easily opened to the atmosphere.

  Therefore, by opening a supply valve 353 (described later) of the sub tank unit 212, the ink in the ink cartridge 216 is pressurized and supplied to the sub tank unit 212 via the tube unit 213 due to the pressure in the pressure tank 217. That is, the inside of the pressure tank 217 is maintained at a necessary water head pressure by the pressure pump 332, and ink is supplied using this water head pressure by opening the supply valve 353. Note that the air release valve 325 is configured to automatically recover when the pressurized air from the air supply mechanism 218 returns to a predetermined value and the valve body returns. The air tank 334 uses a pneumatic cylinder tube.

  Next, the sub tank unit 212 will be described with reference to FIGS. 2, 25, and 26. The sub tank unit 212 includes two partial units 212 a and 212 b disposed on the left and right sides on the base plate 13. Each of the partial units 212 a and 212 b includes an intermediate ink pack 351 that functions as an intermediate tank, and an intermediate ink pack 351. A sub tank frame 352 that supports the horizontal ink in a horizontal orientation, a supply valve 353 provided on the main ink tank unit 211 side of the intermediate ink pack 351, and a discharge valve 354 provided on the ink jet head 26 side of the intermediate ink pack 351. There are six of each.

  Specifically, each of the partial units 212a and 212b is provided with intermediate ink packs 351 and the like, and each of the partial units 212a and 212b is provided with six intermediate ink packs 351 and the like. ing. The partial units 212a and 212b support the six sub tank frames 352 on the sub base plates provided for the partial units 212a and 212b, and are fixed on the base plate 13 via the sub base plates 355. .

  The intermediate ink pack 351 includes a deformable flexible bag-shaped intermediate pack body 357, a resin ink inlet member 358 attached to one end of the intermediate pack body 357, and a resin ink attached to the other end. The outlet member 359 and a flow path holding pipe (not shown) for connecting the ink inlet member 358 and the ink outlet member 359 in the intermediate pack body 357 are provided.

  The intermediate pack main body 357 is formed in a bag shape by heat-sealing two film sheets at the peripheral edge thereof in substantially the same manner as the pack main body 223 of the ink tank 221, and a deformable storage space for storing ink therein. 361 is configured. Further, the intermediate pack body 357 is attached and sealed so that the ink inlet member 358 and the ink outlet member 359 are opposed to both end portions of both side surface portions, respectively. With such a configuration, when the storage space 361 is filled with ink, the intermediate pack body 357 is in a bulging state (full water) in which both film sheets are separated from each other from a flat state (water reduction state) and bulge into a substantially cylindrical shape. State).

  Each of the ink inlet member 358 and the ink outlet member 359 is made of resin material and has a predetermined strength, and includes a sub attachment hole 362 on the base side that is the intermediate pack body 357 side, a sub attachment hole 362, The outer sub-flange portion 363 is integrally formed, and an ink flow path is formed in the shaft center. Tubes 401 are connected to the respective sub-flange portions 363, and flow path holding pipes are connected to the respective sub-mounting hole portions 362, so that ink of the ink inlet member 358 and the ink outlet member 359 is supplied. An ink flow path communicating with the flow path is formed.

  Although not shown, the flow path holding pipe is formed in a cylindrical shape with a material having rigidity and solvent resistance, and the cylindrical portion 271 is connected to the inside of the cylinder and the inside of the intermediate pack body 357 (storage space 361). A plurality of small holes communicating with each other are perforated. As a result, even in a flat state where both film sheets are in close contact, an ink flow path is secured in the intermediate pack body 357 to prevent the close contact between both film sheets and smooth air removal in the intermediate ink pack 351, etc. It can be done reliably and reliably. Needless to say, the flow path holding pipe can be omitted when the adhesion between the two film sheets is not particularly problematic.

  The sub tank frame 352 is formed by bending both ends in a substantially “C” shape, and is formed by bending the lower end of the vertical support surface 371 upward in a substantially “L” shape on the inner intermediate ink pack 351 side. A sub-base plate 355 having an ink-high detector 372 provided in the portion and an ink-low detector 373 provided in a portion formed by bending the lower end portion of the vertical support surface 371 outwardly in a substantially “L” shape. (See FIG. 2). The intermediate ink pack 351 is a double-sided adhesive on the upper part of the vertical support surface 371 of the sub tank frame 352 in a horizontal vertical posture in which the intermediate pack body 357 is set up vertically and the ink inlet member 358 and the ink outlet member 359 are positioned horizontally. It is attached via tape.

  A detection plate 381 facing the vertical support surface 371 of the sub tank frame 352 is attached to the front surface of the intermediate pack body 357 of the intermediate ink pack 351. The lower end portion of the detection plate 381 extends in the inner and outer directions (the bulging direction of the pack body), and a high detection portion 382 protruding toward the ink high detector 372 side and a low detection protruding toward the ink low detector 373 side. The part 383 is integrally formed. The low detection portion 383 extends to the ink low detector 373 beyond the lower side of the pack body in the horizontal vertical posture.

  The ink high detector 372 and the ink low detector 373 are connected to the controller 11 that performs the main control of the ink jet printer 1 and to the sub controller 385 that controls the supply valve 353 as a secondary control. The sub controller 385 is connected to the controller 11.

  The inclaw detector 373 detects the water-reduced state of the intermediate ink pack 351. When the ink amount in the ink pack decreases, the low detection portion 383 that has been in contact with the ink contracts as the pack body contracts (ink low). detection). As a result, an ON / OFF operation is performed to detect a decrease in water in the intermediate ink pack 351, and the result is sent from the sub-controller 385 to the controller 11. Then, the controller 11 opens the supply valve 353 in a closed state, and ink is pressurized and supplied from the main tank unit 211.

  On the other hand, the ink high detector 372 detects the full state of the intermediate ink pack 351. When the ink is supplied and the pack body expands, the separated high detection portion 382 moves forward and comes into contact. (Ink high detection). As a result, an OFF-ON operation is performed to detect whether the intermediate ink pack 351 is full. At this time, the detection result is sent from the sub-controller 385 to the controller 11, but the supply valve 353 is closed by the sub-controller 385 before the controller 11 closes the supply valve 353 ( Details will be described later).

  The supply valve 353 is configured by an electromagnetic valve (electromagnetic two-way valve) supported at one bent end of the sub tank frame 352 and is controlled to be opened and closed by the controller 11 and the sub controller 385 of the inkjet printer 1. That is, the supply valve 353 is automatically opened by the ink-low detector 373 when the ink of the ink cartridge 216 is supplied to the intermediate ink pack 351, and is normally closed. In the maintenance for replacing the intermediate ink pack 351, the supply valve 353 is naturally closed.

  Similarly to the supply valve 353, the discharge valve 354 is configured by an electromagnetic valve (electromagnetic two-way valve) supported at the other bent end of the sub tank frame 352, and is opened and closed by the controller 11 of the inkjet printer 1. That is, the discharge valve 354 is normally opened and is closed by the controller 11 during maintenance. As a result, the ink flow path of the tube unit 213 can be closed during maintenance, so that the ink pack can be exchanged smoothly and reliably while preventing ink leakage.

  Here, the opening / closing control of the supply valve 353 will be specifically described with reference to FIG. When an ink replenishment command is sent to the controller 11 due to the ink low detection of the intermediate ink pack 351, the controller 11 opens the supply valve 353 that requires ink replenishment (S1, S2). When ink is supplied from the ink cartridge 216 (S3) and ink high is detected (S4: Yes), the sub-controller 385 closes the supply valve 353 (S5). Thereafter, the controller 11 also issues a valve closing command for the supply valve 353 to complete the ink supply (S6).

  In this way, since ink high detection is performed by hardware control and mechanical control detected mechanically, ink supply to the intermediate ink pack 351 can be performed appropriately and reliably. That is, it is configured by only one control process, and even if the control process is hindered, excessive expansion of the intermediate ink pack 351 due to continued ink pressurization is prevented. The natural flow of ink can be prevented.

  The arrangement of the intermediate ink packs 351 for each color in the sub tank unit 212 is such that black (K), cyan (C), and light cyan (right cyan (the larger in the X-axis direction: the left side in FIG. 2)) LC) are arranged in order from the left, and light magenta (LM), magenta (M) and yellow (Y) are arranged in order from the left in the partial unit 212b on the right side (the smaller X-axis). Each of the inkjet heads 26 is connected by a tube unit 213.

  Next, the tube unit 213 will be described with reference to FIG. 1, FIG. 2, and FIG. The tube unit 213 includes a plurality of hard tubes 401 that connect the main tank unit 211, the sub tank unit 212, and the inkjet head 26, a plurality of two-branch joints 402 connected to the tubes 401, and piping on the machine base 2. It has a plurality of tube holders 403 that hold a plurality of tubes 401 in the path.

  The plurality of two-branch joints 402 includes six two-branch joints 402 (tank-side two-branch joints 402) on the main tank unit 211 side and twelve two-branch joints 402 (head-side two-branch joints 402) on the inkjet head 26 side. These are both branched in a “T” shape and are arranged close to the sub tank unit 212. The other end of the six tubes 401 connected to each color ink tank 221 of the main tank unit 211 is connected to each tank side bifurcated joint 402 to branch, and a total of twelve intermediate ink packs of two for each color. 351. Each supply valve 353 is interposed in each branched tube 401 on the main side.

  On the other hand, the head-side bifurcated joint 402 is placed on the base plate 13 and connected to each discharge valve 354, and the tubes 401 connected to the inkjet head 26 are connected to the remaining two ports. Specifically, ink is supplied from one intermediate ink pack 351 to two ink nozzle rows, and a total of 24 tubes 401 are connected to 24 ink nozzle rows. In this case, since the pipeline is branched through the two-branch joint 402, the plurality of tubes 401 can be piped to the plurality of inkjet heads 26 with the piping length thereof being shortened. Yes.

  A plurality (24) of tubes 401 from all the intermediate ink packs 351 to the inkjet head 26 can be connected to the X-axis cable from the base plate 13 without interfering with other devices (such as the XY movement mechanism 25). It is guided upward through the bear 38 and the Y-axis cable bear 39, and is piped to each inkjet head 26 via the pipe support plate 409. And three corner portions on this piping system path, that is, on the base plate 13 facing the X-axis cable bear 38, on the pipe plate 408 between the X-axis cable bear 38 and the Y-axis cable bear 39, and the Y-axis On the pipe support plate 409 facing the cable bear 39, a tube holder group 410 composed of four tube holders 403 is provided, which holds the tube 401 bent along the corner.

  As shown in FIG. 27, each tube holder 403 includes a holder main body 411 formed in a substantially curved shape in plan view along the above-mentioned corner, and a plurality (three) of tube holders formed side by side on the upper surface of the holder main body 411. And a groove 412. Each tube holding groove 412 includes a curved portion 414 that holds the tube 401 in a bent state along the corner, and two linear portions 415 that are continuous on both sides of the curved portion 414, and each groove width is configured to be the same width. ing. That is, each curved portion 414 is formed with the same radius of curvature, and two linear portions 415 are formed so as to be continuous therewith. In this case, the groove width is 3.5 mm, and the radius of curvature at the groove center is 41.9 mm.

  The two straight portions 415 are substantially orthogonal on each extended straight line, and the tube 401 held by the tube holder 403 is rerouted at a substantially right angle. Corresponding to the tube holding groove 412, the holder main body 411 is integrally formed of a curved shape portion 418 and two linear shape portions 419 respectively connected to both ends of the curved shape portion 418. In the curved shape portion 418, the outer radius end surface and the inner radius end surface are formed with the same curvature radius, and the two linear shape portions 419 are formed with the same length. A pin hole 425 that penetrates the holder main body 411 is formed at a substantially central portion of the curved shape portion 418 of the tube holder 403, and is screwed to each corner portion on the piping path via the pin hole 425. It is supposed to be fixed.

  Further, the tube holding groove 412 has a predetermined depth so that two (a plurality of) tubes 401 can be held one above the other. The two upper and lower tubes 401 are held in a stacked state by being pushed into the tube holding groove 412. In addition, since one tube holding groove 412 holds two tubes 401 of the same ink color (but different from the intermediate ink pack 351) one above the other, six tubes are held in one tube holder 403. 401 is held. Accordingly, one tube holder group 410 collectively holds 24 tubes 401 corresponding to 24 ink nozzle rows of the inkjet head 26.

  Each tube holder 403 includes a second tube holder group 410-2 related to the second corner 422 of the piping path of the tube 401 and a third tube related to the third corner 423, as shown in FIG. In the holder group 410-3, each of the four tube holders 403 is arranged in an orderly manner obliquely and horizontally.

  The first tube holder group 410-1 related to the first corner 421 is joined with 12 tubes 401 connected to the left and right partial units 212 a and 212 b of the sub tank unit 212 as shown in FIG. Facing the part, two sets of right and left arranged side by side are arranged symmetrically (back to back). The tube 401 from the head-side bifurcated joint 402 is held in the first tube holder group 410-1 in a state bent along the corner of the piping path. In the head-side bifurcated joint 402, the tube 401 connected to the portion extending in the X-axis direction is held by the tube holder 403 on the rear side (X-axis cable bear 38 side) and connected to the portion extending in the Y-axis direction. The obtained tube 401 is held by the front tube holder 403.

  Here, with reference to FIG. 2 and FIG. 28, the arrangement of each ink color held in each tube holder group 410 will be specifically described. As shown in both figures, in the first tube holder group 410, light cyan (LC), cyan (C), and black (K) are assembled in order from the back side in the two sets of tube holders 403 on the left side. The light magenta (LM), magenta (M), and yellow (Y) are arranged in pairs in order from the back side in the two sets of tube holders 403 on the right side.

  Two ink tubes 401 of the same color are stacked one above the other in one ink piping path composed of one tube holding groove 412, and these two tubes 401 are from different intermediate ink packs 351 adjacent to each other. is there. Therefore, for example, in the first ink piping path shown in FIG. 28, the tubes 401 from the light cyan (LC) intermediate ink packs 351 join up and down, and in the fourth ink piping path, the light cyan (LC) LC) tube 401 from each intermediate ink pack 351 merges and is positioned up and down. Then, the 24 tubes 401 of all colors after joining are arranged one above the other in an up-and-down manner, and the path is changed (routed) at a substantially right angle so as to face the X-axis cable bear 38.

  Maintaining this state, all the 24 tubes 401 are guided through the X-axis cable bear 38 and rerouted at a substantially right angle so as to face the upper second tube holder group 410, so that the Y-axis cable bear 39 (Fig. 28 (b)). Thereafter, it passes through the X-axis cable bear 38 and is guided further upward, and the path is changed substantially at right angles to the third tube holder group 410-3 (FIG. 28 (c)), and on the pipe support plate 409. The ink jet heads 26 are connected to the respective ink jet heads 26 through pipe guides 430 (see FIG. 1). Since the tubes 401 are arranged in this manner, the hard tubes 401 can be routed substantially at right angles without using joints, and the lengths of the tubes 401 can be made substantially the same. The pressure loss in 401 can be reduced.

  By the way, the piping for each color ink also corresponds to the cleaning unit 63. That is, as shown in FIG. 10 and FIG. 19, the ink branched from one intermediate ink pack 351 is the first head group 48-1 and the second head group 48-2 (or the third head group 48-). 3 and the fourth head group 48-4) are supplied to the inkjet head 26 (ink nozzle array), and each of the two head groups 48-1 and 48-2 (48-) facing one cleaning operation. 3, 48-4).

  Thereby, the backflow of the ink in the tube 401 can be prevented in the suction operation (cleaning) from each inkjet head 26 by the cleaning unit 63. For example, when the first head group 48-1 and the third head group 48-3 are simultaneously sucked (cleaned), the ink of the second head group 48-2 is transferred to the first head group 48-1, and the third head. The ink of the fourth head group 48-4 flows backward to the group 48-3.

  Next, a main control system constituted by the controller 11 will be described. As shown in the block diagram of FIG. 29, the control system of the ink jet printer 1 includes an input unit 451 that reads (inputs) image data created by an external device such as a personal computer by the operation, and a printing unit 5. A printing unit 452 that prints an image on the printing tape A, a maintenance unit 453 that includes the maintenance unit 10 and performs maintenance processing of the inkjet head 26, and an ink supply unit 9 that supplies ink to the inkjet head 26. An ink supply unit 454, a tape supply unit 6 (supply motor 183), a tape feed unit 7 (tape feed motor 112), and a tape take-up unit 8 (winding motor), and a transport unit 455 for feeding the printing tape A , A drive unit 456 having various drivers for driving each unit, and a tape feed center of the sub-controller 385 and the tape feed means 7. A detection unit 457 for performing various detections have 130 etc., and a control unit 458 for controlling each unit of the ink jet printer 1 (controller 11).

  The control unit 458 includes a CPU 461, a ROM 461, a RAM 463, and a P-CON 464, which are connected to each other via a bus 465. The ROM 461 has a control data area for storing various control data such as a character table and a color conversion table in addition to a control program area for storing a control program processed by the CPU 461. The RAM 463 has an image data area for storing image data input from the outside, a print image data area for storing image data for printing, a feed amount data area for storing feed amount data for tape feeding, and each color. It has a corresponding color conversion buffer area and various register groups, and is used as a work area for control processing.

  In the P-CON 464, a logic circuit for supplementing the function of the CPU 461 and handling interface signals with peripheral circuits is configured by a gate array or a custom LSI. For this reason, the P-CON 464 is connected to a keyboard of a personal computer and the like, and various commands and image data from the input unit 451 are fetched into the bus 465 as they are or processed, and in conjunction with the CPU 461, the CPU 461 and the like are connected to the bus 465. The data and control signals output to are output to the drive unit 456 as they are or after being processed.

  Then, according to the control program in the ROM 461, the CPU 461 inputs various detection signals, various commands, various data, and the like through the P-CON 464 according to the control program in the ROM 461, processes the various data in the RAM 463, and the like. A control signal is output to the drive unit 456 via the CON 464. As a result, the printing means 5, the tape feed motor 112, and the like are controlled to control the entire inkjet printer 1 such as performing image printing and tape feed on the printing tape A under predetermined printing conditions and tape feeding conditions.

  For example, as described above, along with the determination of the printing content, the length of the unit printing area C corresponding to the printing operation and feeding amount of one tact on the printing tape A is determined, and the detection mark E is printed in the unit printing area C. The position is set to a position where the specified distance M is from the rear end of the unit printing area C. Then, after a large number of unit images B, detection marks E, and image position marks D are printed in one unit printing area C, feeding to the other side is started, and the detection marks E are detected on the downstream side of the feeding. Thus, the rear end of the unit printing area C is accurately stopped at the position of the front end before feeding.

  In this case, the rear end of the unit print area C is set at an intermediate position between two adjacent unit images B. As a result, each unit image B is not affected by the stop position when images are continuously printed over a plurality of unit print areas C, so that each image by another cut device after printing is used. It is possible to accurately and reliably provide a half cut via the position mark D.

  Then, the drive operation of the tape feed motor 112 is irregularly controlled in order to make the tape feed stop accuracy more accurate than the high speed feed of the printing tape A. Specifically, in order to shorten the time from detection of the detection mark E to the stop, the tape feed motor 112 is driven according to the drive profile with acceleration / deceleration which is a two-stage trapezoidal drive, and the tape feed roller 111 is moved. Shift control is in progress. In other words, the printing tape A (unit printing area C) that has started feeding is fed at high speed, and before the detection mark E reaches its detection position, the high speed feeding is set to low speed feeding, or the high speed feeding is stopped and then the low speed feeding is stopped. This is a control for feeding.

  30 and 31 show acceleration / deceleration curves of the tape feed motor 112 with some examples. FIG. 30 corresponds to the former control and FIG. 31 corresponds to the latter control. Hereinafter, although both figures will be described, the total number of pulses of the tape feed motor 112 is determined based on the length of the unit printing area C, that is, the tape feed amount (feed length) at one time, and the tape feed roller 111 (drive roller). 123) is given as a theoretical value calculated in consideration of the outer peripheral length and the like. Here, description will be made assuming that the tape feed amount per time is 30 inches, and the theoretical total number of pulses for 30 inches is 10,000 pulses.

  In FIG. 30, the rotation speed of the tape feed motor 112 is gradually accelerated from the state where it is stopped until reaching the high speed rotation speed, and the detection mark E in the unit printing area C is at its detection position (position of the tape feed sensor 130). Before reaching the speed, it is gradually decelerated until it reaches a low rotational speed. After the detection mark E reaches the detection position and is detected, it gradually decelerates and stops. When this two-stage trapezoidal drive profile is time-divided into a high-speed feed section and a low-speed feed section, the high-speed feed section is time-divided into an acceleration section, a constant high-speed section, and a first deceleration section. The time is divided into a constant low speed section and a second deceleration section.

  In this case, the pulse numbers in the acceleration section, the first deceleration section, and the second deceleration section are fixed values, which are 1000 pulses, 1000 pulses, and 4 pulses (the number of stop pulses), respectively. On the other hand, the number of pulses in the constant low speed section is an arbitrary value that varies depending on the tape width or the like, and in this case is 60 pulses. Based on the number of pulses in these sections and the theoretical total number of pulses, the number of pulses in the constant high speed section is calculated. In this way, before the detection mark E reaches the detection position, shift control is performed so that the print tape A is fed from high speed to low speed.

  As a result, the number of pulses (number of steps) in the stop control can be extremely reduced as compared with the case where the stop control is directly performed from the high-speed feed. Therefore, while stopping at a high speed, the stop control can be performed with a small number of steps when stopping, and errors in the feeding operation of the printing tape A (such as an outer diameter error of the tape feeding roller 111 and variations in the slip ratio of the printing tape A). Can be reduced as much as possible.

  In FIG. 31, the rotational speed of the tape feed motor 112 is gradually accelerated from the state where it is stopped until it reaches a high rotational speed, and gradually before the detection mark E in the unit printing area C reaches its detection position. Decelerate to stop. Then, the rotation speed of the tape feed motor 112 is gradually accelerated from the stop state until reaching the low speed rotation speed, and after the detection mark E reaches the detection position and is detected, it is gradually decelerated and stopped. When this two-stage trapezoidal drive profile is time-divided into a high-speed feed section and a low-speed feed section, the high-speed feed section is time-divided into a first acceleration section, a constant high-speed section, and a first deceleration section. The section is time-divided into a second acceleration section, a constant low speed section, and a second deceleration section.

  In this case, the number of pulses in the second deceleration section is a fixed value of 4 pulses (number of stop pulses), and the number of pulses in the constant low speed section is a theoretical value of 100 pulses. Based on the number of pulses in these sections and the theoretical total number of pulses, the number of pulses in the high-speed feed section is calculated. In this way, the started high-speed feed is completed sufficiently before the detection mark E reaches its detection position, and the low-speed feed is started continuously after the stop, and the stop feed is detected when the detection mark E is detected. I try to end it.

  As a result, similarly, the time required for feeding the printing tape A can be shortened by the amount that the printing tape A is fed at a high speed, and the stop control can be performed by detecting the detection mark E during the slow feeding. Therefore, while stopping at a high speed, the stop control can be performed with a small number of steps when stopping, and the influence of errors in the feeding operation of the printing tape A can be minimized. Further, since the high-speed feed is shifted to the low-speed feed through the stop control, the control operation can be simplified as compared with the case where the high-speed feed is directly changed to the low-speed feed.

  FIG. 32 is a modification of the example shown in FIG. In this case, prior to the detection mark E, the sub mark F is printed in the unit print area C in the mark print area AC (see FIG. 5B). That is, in the unit print area C, the sub-mark F for the high-speed feed section and the detection mark E for the low-speed feed section are continuously printed, and by detecting this sub-mark F, in the high-speed feed section Deceleration is started and stopped, and subsequently, low-speed feed is performed from the stopped state, and after the detection mark E reaches the detection position and is detected, it is gradually decelerated and stopped.

  As a result, since the above-described shift control is performed using the submark F, it is not necessary to calculate the number of pulses in the high-speed feeding section in particular, so that the control operation in feeding the printing tape A can be simplified. . Note that the printing interval (mark separation distance) between the submark F and the detection mark E is always constant, and is set to feed 2100 pulses. Furthermore, it goes without saying that the shift control shown in FIG. 32 can also be applied to the shift control shown in FIG. 30 in which the printing tape A is moved from high speed to low speed before the detection mark E reaches the detection position.

  As described above, the feeding control of the printing tape A has been described using the detection mark E. However, this may be shared by the image position mark D. That is, in the unit printing area C of the printing tape A, the image position mark D is printed corresponding to each unit image B for label removal (cutting). The mark D may be used to perform feed / stop for each unit print area C. In FIG. 33, a plurality of image position marks D are printed at an equal pitch.

  In FIG. 5A, one image position mark D is printed for each unit image B, and this image position mark D is printed on the upstream side of the unit image print area Bb of the unit image B in the feed direction. In this case, an arbitrary one of the plurality of image position marks D in the unit print region C also serves as the detection mark E. For example, as shown in the figure, the image position mark D of the unit image B closest to the rear end of the unit printing area C may be used as the detection mark E. However, because of the correlation with the above embodiment, the distance X from the printing position of the image position mark D to the rear end of the unit printing area C is the printing of the detection mark E from the rear end of the unit printing area C in the above embodiment. It is set larger than the distance M to the position.

  In FIG. 5B, the image position mark D is not printed as for one unit image B, and a plurality of image position marks D are printed in the unit print region C at an equal pitch. Also in this case, an arbitrary one of the plurality of image position marks D in the unit print area C also serves as the detection mark E. However, unlike the case of FIG. The image position mark D counted a predetermined number from the end is used. According to this example, another cutting device that the printing tape A faces after printing is particularly useful in the case of a rotary cutter.

  By the way, in order to realize more precise tape feeding / stopping, it is preferable to eliminate the sensor error of the tape feeding sensor 130 which is a reflection type optical sensor. Such a sensor error is caused by a change in the amount of reflected light due to the paper type of the printing tape A and the printing resolution of the detection mark E, and a slightly different threshold for detection by the optical sensor. However, as a countermeasure against the former, it is preferable to correct the number of stop pulses (steps) from the detection of the detection mark E to the stop of the feeding of the printing tape A according to the type of the printing tape A. . For example, in the case of glossy paper or matte paper, the number of stop pulses is set to 4 pulses or more.

  As a countermeasure against the latter, the number of stop steps from the detection of the detection mark E to the stop of the feeding of the printing tape A may be corrected according to the print resolution of the detection mark E, or the print resolution of the detection mark E Is preferably set to a constant value separately from the print resolution of the print image (unit image B). Thus, the effect of these reflected light amounts can be absorbed by correcting the number of stop steps in advance, and the reflection resolution can be improved by always setting the print resolution of the detection mark E to a constant value. The influence of the amount of light can be reduced as much as possible. In this way, the influence of the detection accuracy of the tape feed sensor 130 can be eliminated, and the printing tape A can be fed even more accurately.

  Next, with reference to FIG. 34, the inkjet printer 1 according to the second embodiment will be described focusing on differences from the above embodiment. In the present embodiment, the suction table 101 has a plurality of suction holes 108 corresponding to the printing tape A having the maximum width, and a closing plate 500 that closes the plurality of suction holes 108 separated from the printing tape A of each width. Have. A large number of suction holes 108 are arranged in a staggered manner, and it is preferable that each suction hole row 109 is configured with a special pitch, as in the above embodiment.

  Three closing plates 500 are arranged corresponding to the three suction chambers 106 so as to face the back side of the suction plate 105, and are configured to be able to advance and retreat in the width direction of the printing tape A. Each closing plate 500 has a gripping long hole 501 penetratingly formed in front of the side opposite to the reference side (end face reference) of the printing tape A, and a plurality of slide grooves 502 (three in the drawing in the drawing). ) Is formed. Each slide groove 502 is formed at a position away from the plurality of suction holes 108 and is engaged with each groove guide portion provided on the suction plate 105 side. Each closing plate 500 can be easily moved forward and backward using the gripping long holes 501.

  According to the present embodiment, the plurality of suction holes 108 that are removed from the printing tapes A of various widths can be easily closed as appropriate for a plurality of types of printing tapes A having different widths, and thus do not contribute to suction. Air leakage from the suction hole 108 can be reliably prevented. Therefore, a stable suction force can be applied to a plurality of types of printing tapes A having different widths. Further, since the closing plate 500 is not exposed on the surface of the suction plate 105, interference with the ink jet head 26 can be effectively prevented.

  Next, with reference to FIG. 35, the inkjet printer 1 according to the third embodiment will be described focusing on differences from the above embodiment. FIG. 35 is a partially simplified view of the suction table 101 as viewed from the front. In the present embodiment, a pair of print tapes A that allow feeding of the print tape A and prevent lifting of both edges in the width direction of the print tape A are shown. A tape pressing member 521 is disposed on the suction table 101. Each tape pressing member 521 has a pressing plate 522 formed in a thin plate shape and a guide portion 523 that guides the feeding of the printing tape A in a state where the position of the printing tape A is regulated in the width direction.

  Each pressing plate 522 is disposed so as to fit in the clearance between the ink ejection surface of the inkjet head 26 and the printing tape A. Further, the holding plate 522 is stored in a margin in the width direction of the printing tape A. Similarly to the above-described embodiment, when the printing tape A is used as the end surface reference, one of the tape pressing members 521 is fixedly arranged, and the other of the tape pressing members 521 is configured to be movable forward and backward in the width direction of the printing tape A. ing.

  According to the present embodiment, in the feeding operation of the printing tape A, the pair of tape pressing members 521 prevent lifting of both edges in the width direction of the printing tape A. The flatness is maintained in the entire region including the edge. Further, by providing the tape pressing member 521, the suction force of the suction table 101 can be made relatively small, and the influence on the ink bending due to the feeding of the printing tape A and air leakage can be reduced as much as possible. Further, the guide portion 523 can cause the tape pressing member 521 to also serve as a feed guide for the printing tape A, so that the accuracy of the ink landing position on the printing tape A can be increased. When a plurality of types of printing tapes A are introduced at the center, both the tape pressing members 521 can be moved forward and backward.

  In each of the above-described embodiments, the pair of grip rollers 115 (115a, 115b) is provided. For example, the grip roller 115 may be configured only by a roller (115a) whose roller rolling surface with respect to the printing tape A is horizontal with the surface of the suction table 101 (suction plate 105).

  Further, the grip roller 115 may be configured by a roller that rotates in a slip (braking) manner, and tension may be applied to the printing tape A. As a result, even if the leaf spring portion 139 provided in the width guide portion 117 of the tape feeding mechanism 102 is omitted, the printing tape A faces the printing area G in a tensioned state. As a result, the printing tape A can be fed accurately. Further, the tension can be applied uniformly in the width direction of the printing tape A, and the skew of the printing tape A can be effectively prevented.

  In another embodiment, a reverse rotation roller is provided in place of the grip roller 115 described above. The reverse rotation roller includes a roller main body constituting a grip roller, a one-way clutch built in the roller main body, and a reverse rotation motor that reversely rotates a driving side roller of the roller main body. The one-way clutch rotates the roller body during normal rotation and slip-rotates (rotates while slightly braking) the roller body during reverse rotation.

  In this case, the reverse rotation motor is driven not only when the feeding of the tape is stopped but also when the feeding is performed. When the tape is fed, a certain tension is applied to the printing tape, and when the feeding is stopped, the printing tape A is slackened. It is like that. Thereby, tension is applied to the printing tape A when the feeding is stopped. The reverse rotation motor may be driven only when the tape feed is stopped.

1 is an external perspective view of an inkjet printer according to an embodiment of the present invention. It is an external appearance perspective view from the back side which omits and shows the ink jet printer concerning an embodiment. It is a top view which shows the printing means circumference. It is explanatory drawing which shows movement operation | movement of a head unit. It is an external appearance perspective view of a head unit. FIG. 3 is a structural diagram schematically showing a head unit. It is explanatory drawing which shows the relationship between a paper dust removal mechanism and a head unit. It is the flowchart which showed notionally the processing flow of the paper dust removal mechanism. It is the (a) perspective view and (b) top view which show the storage unit periphery. It is (a) perspective view and (b) top view which show the cleaning unit and the wiping unit periphery. It is a perspective view which shows the circumference of a cleaning unit. It is sectional drawing which represented the tape feeding means typically. It is the typical top view which showed the arrangement | sequence of a suction hole. It is sectional drawing of a tape feeding means. It is a partial expansion perspective view which shows a tape feeding means. Explanatory drawing of the leaf | plate spring of a tape feed means. It is explanatory drawing of the printing result to a printing tape. It is the flowchart which showed notionally the other processing flow of the paper dust removal mechanism. It is a piping system diagram of an ink supply system. 2A and 2B are diagrams illustrating an ink cartridge, in which FIG. 1A is an exploded perspective view of a cartridge case, FIG. 2B is a perspective view of an ink tank, and FIG. 2C is a front view of the cartridge case. It is sectional drawing which shows a mode that the ink cartridge was accommodated in the pressurized tank. It is a perspective view of an open state and (b) a side view of an open state showing a pressurized tank. It is the figure which showed a part of pressurized tank, (a) Side view and (b) Perspective view. It is sectional drawing which shows the state which mounted | worn with the ink cartridge in the pressurized tank, (a) The state which mounted | worn the ink cartridge back and forth, (b) The state which mounted the ink cartridge back and forth upside down. It is a perspective view which shows a sub tank unit. It is a perspective view which shows the sub tank unit circumference. It is the figure which showed the tube holder circumference. It is explanatory drawing which shows the flow of ink supply. It is a block diagram of a control system of the ink jet printer according to the embodiment. It is the figure which showed the acceleration / deceleration curve of the tape feed motor. It is the figure which showed the acceleration / deceleration curve of the other tape feed motor. It is the figure which showed the modification of FIG. 31, (a) Acceleration / deceleration curve curve of another tape feed motor, and (b) It is explanatory drawing of the printing result to a printing tape. It is explanatory drawing of the printing result to the printing tape by the other printing method. It is a perspective view of the inkjet printer which concerns on 2nd Embodiment. It is a front view which shows simply the inkjet printer which concerns on 2nd Embodiment. It is a flowchart which shows the processing flow of valve control of a sub tank unit.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Inkjet printer 2 ... Machine stand 3 ... Finisher 4 ... Tape feed path 5 ... Printing means 6 ... Tape supply means 7 ... Tape feed means 8 ... Tape winding means 9 ... Ink supply means 10 ... Maintenance means 18 ... Waste ink tank 24 ... Head unit 25 ... XY movement mechanism 26 ... Inkjet head 27 ... X-axis table 28 ... Y-axis table 38 ... X-axis cable track 39 ... Y-axis cable track 41 ... Support bracket 42 ... Unified carriage 43 ... Paper dust removal Mechanism 44 ... Partial carriage 55 ... Fan holder 56 ... Paper dust removal fan 57 ... Paper dust removal fan 61 ... Flushing box 62 ... Storage unit 63 ... Cleaning unit 64 ... Wiping unit 66 ... Box body 67 ... Ink absorber 69 ... Ink Retainer 71 ... Cap support 72 ... Storage cap 74 ... Cap moving mechanism 77 ... Cap body 83 ... Cleaning cap 85 ... Cleaning cap moving mechanism 87 ... Cap body 101 ... Suction table 102 ... Tape feed mechanism 105 ... Suction plate DESCRIPTION OF SYMBOLS 107 ... Suction fan 108 ... Suction hole 109 ... Suction hole row 111 ... Tape feed roller 112 ... Tape feed motor 114 ... Guide roller 115 ... Grip roller 117 ... Width guide part 118 ... Intermediate roller 119 ... Lower roller 123 ... Drive roller 130 ... Tape feed sensor 137 ... Feed member 139 ... Plate spring part 152 ... Plate spring 161 ... Flat plate sliding contact part 162 ... Comb tooth sliding contact part 163 ... Comb tooth piece 174 ... Feeding reel 191 ... Tape take-up reel 211 ... May Tank unit 212 ... Sub tank unit 213 ... Tube unit 216 ... Ink cartridge 217 ... Pressurized tank 218 ... Air supply mechanism 220 ... Cartridge case 221 ... Ink tank 224 ... Ink supply port 233 ... Tank housing part 241 ... Case side joint 245 ... Locking groove 246 ... insertion hole 247 ... retaining protrusion 250 ... notch 251 ... ink absorber 271 ... trunk 272 ... blocking member 273 ... lid member 278 ... tank side joint 283 ... insertion pin 284 ... insertion protrusion 285 ... Connection port 303 ... Hinge 306 ... Hinge pin 307 ... Hinge piece 308 ... Hinge hole 312 ... Stopper 315 ... Fastener 316 ... Detector 325 ... Air release valve 331 ... Air piping 332 ... DESCRIPTION OF SYMBOLS 1 ... Intermediate ink pack 352 ... Sub tank frame 353 ... Supply valve 354 ... Discharge valve 401 ... Tube 402 ... Two branch joint 403 ... Tube holder 411 ... Holder main body 412 ... Tube holding groove 414 ... Curved part 415 ... Linear part

Claims (7)

  1. A tube holder that is provided at a corner in a piping path of a tube that supplies ink from an ink tank to an inkjet head and is curved in the same plane, and holds a plurality of the tubes side by side ,
    A holder body formed in the plan view a substantially curved shape along the corner,
    The plane formed with a plurality of side by side on the front surface of the parallel said holder body, have a, a plurality of tube holding groove for holding the tube in the bent state along the corner,
    The tube holder, wherein the plurality of tube holding grooves are formed with the same radius of curvature in the plane .
  2. 2. The tube holder according to claim 1 , wherein each of the tube holding grooves is formed to a depth that allows a plurality of tubes to be stacked and held.
  3. 3. The tube holder according to claim 1, wherein each of the tube holding grooves includes a curved portion and two linear portions respectively connected to both ends of the curved portion.
  4. The holder main body is integrally formed with a curved shape portion and two linear shape portions respectively connected to both ends of the curved shape portion,
    The tube holder according to any one of claims 1 to 3 , wherein an outer radius end face and an inner radius end face of the curved shape portion are formed to have the same radius of curvature.
  5. The holder main body is integrally formed with a curved shape portion and two linear shape portions respectively connected to both ends of the curved shape portion,
    The tube holder according to any one of claims 1 to 4 , wherein the two linear portions are formed to have the same length.
  6. 6. An ink supply piping system for an ink jet printer, wherein the tube holder according to claim 1 is provided at a corner in a piping path of a tube for supplying ink from an ink tank to an ink jet head.
  7. An ink jet printer comprising the ink supply piping system for an ink jet printer according to claim 6 .
JP2006333852A 2006-12-11 2006-12-11 Tube holder, inkjet printer ink supply piping system, and inkjet printer Expired - Fee Related JP4211845B2 (en)

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JP5810496B2 (en) * 2010-09-10 2015-11-11 セイコーエプソン株式会社 Inkjet recording device
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