JP2011096868A - Processing method for green sheet and arrangement state judging method for prints - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for preventing a green sheet arrangement error in a printing and laminating process of the green sheet and improving laminating accuracy simultaneously. <P>SOLUTION: Prior to printing, first and second reference holes H1 and H2, and a third reference hole H3 are arranged outside a print range of the green sheet as arrangement indexes for printing and laminating of the green sheet. Then, a suction hole for detection, which communicates with the third reference hole in a state where the green sheet is correctly fixed, is arranged on the stage of a printer. The printer is provided with a suction means to absorb air in the suction hole and a sensor to detect a pressure condition in the suction hole so as to judge that a print is not accurately arranged on the stage when the sensor detects a negative pressure. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to printing and lamination of ceramic green sheets.

  As a method for producing various devices such as sensor elements such as gas sensors, a plurality of ceramic green sheets (hereinafter referred to as “ceramic green sheets”) produced by applying and drying a slurry, which is a mixture of ceramic powder and organic matter, on a predetermined film. (Also referred to simply as a green sheet), as necessary, by laminating after forming a predetermined circuit pattern or forming a cavity by screen printing or the like, and sintering the resulting laminate (green) Sheet process) is widely known.

  In the green sheet process, in order to ensure the stacking accuracy when stacking multiple green sheets that have been printed or formed with cavities, a reference hole for positioning is provided in advance in the green sheet to be used. There is a method of performing printing or lamination in a state where a reference hole for positioning a green sheet is fitted to a projection portion such as a pin provided on a stage for arranging a sheet or a jig used for lamination (for example, , See Patent Document 1).

JP 2009-175099 A

  Patent Document 1 is a blank sheet that is a green sheet before printing or the like, and has two upper and lower reference holes for positioning and a reference hole for position evaluation (for measurement). Have been disclosed.

  However, since the green sheet is likely to be deformed such as stretch or wrinkle, the green sheet is not sufficiently restrained only by providing the upper and lower two reference holes as disclosed in Patent Document 1, so that the There is a problem that a printing position deviation or a lamination deviation is likely to occur during lamination.

  Also, when manually setting the green sheet on the stage or stacking jig during printing or laminating, the green sheet may be accidentally set in a 180 ° inverted state from the predetermined state, or in a state where the front and back sides are reversed. Mistakes such as trying to set can occur. For example, in the case of a green sheet in which a reference hole is provided in a manner as disclosed in Patent Document 1, a slight deformation occurs in the green sheet, so that the green sheet is set in such a manner. It is possible that printing or lamination is performed without being noticed. Since products manufactured by such an incorrect process are naturally defective, in order to improve product yield and reduce process loss, such mistakes were not made in the first place, or even if they were made. However, it is necessary to take measures beforehand so that it can be discovered as quickly as possible in the subsequent steps.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a method for preventing misplacement of green sheets in a green sheet printing / lamination process and improving the lamination accuracy.

  In order to solve the above-mentioned problem, the invention of claim 1 includes a printing process in which printing is performed on at least one print target green sheet in a printing apparatus, and a plurality of green sheets including the at least one print target green sheet. A green sheet processing method comprising: a stacking step of forming a stacked body, wherein the plurality of green sheets including the at least one print target green sheet prior to the printing step include the printing step and the stacking step. An arrangement index forming step of forming an arrangement index serving as an index of arrangement, wherein in the arrangement index forming step, the first and second references are outside the print range of each outer peripheral portion of the plurality of green sheets. A hole is provided opposite to each other on one center line of the green sheet, and the second reference hole is provided. A third reference hole is provided on a straight line orthogonal to the one center line, and the first and second reference holes are provided on a stage of a printing apparatus that performs printing on the at least one green sheet in the printing step. First and second reference pins that are fitted to each other, and a detection suction hole that communicates with the third reference hole in a state where the at least one green sheet is correctly fixed, and the suction hole is provided in the printing apparatus. A suction means for sucking air and a sensor for detecting the pressure state in the suction hole, and in the printing process, when the sensor detects a negative pressure, the substrate is correctly placed on the stage. It is judged that it is not.

  Invention of Claim 2 is the processing method of the green sheet of Claim 1, Comprising: The lamination jig | tool used for lamination | stacking of these green sheets in the said lamination process WHEREIN: In said 1st and 2nd reference hole First and second reference pins to be fitted, and a positioning pin to be fitted to the third reference hole in a state where each of the plurality of green sheets is correctly stacked, are provided.

  Invention of Claim 3 is the processing method of the green sheet of Claim 1 or Claim 2, Comprising: Each of these green sheets has a substantially rectangular shape in planar view, The said arrangement | positioning parameter | index formation process In each of the plurality of green sheets, a fan-shaped cutout is provided at each of the four corners so that the cutout shapes at three of the four corners are different, and the printing apparatus and the stacking jig Corner pins corresponding to the shapes of the four corners are provided in advance at positions corresponding to the four corners of each of the plurality of green sheets.

  The invention of claim 4 is the green sheet processing method according to claim 3, wherein, in the arrangement index forming step, the third reference is out of the printing range and with respect to the one center line. A fourth reference hole is provided at a position asymmetric with the hole.

  The invention according to claim 5 is the green sheet processing method according to claim 3, wherein in the placement index forming step, a notch is further formed on a side parallel to the center line of each of the plurality of green sheets. It is characterized by providing.

  The invention of claim 6 is a method for determining an arrangement state of the printed material on a stage for fixing the printed material when printing is performed on a sheet-shaped printed material in a printing apparatus, prior to printing. The first and second reference holes are provided opposite to each other on one center line of the printed material outside the printing range of the outer peripheral portion of the printed material, and the first reference hole passes through the second reference hole. A third reference hole is provided on a straight line orthogonal to the center line of the first substrate, and a detection suction hole that communicates with the third reference hole in a state where the substrate to be printed is correctly fixed is provided on the stage; A suction means for sucking air in the suction hole and a sensor for detecting a pressure state in the suction hole, and the printed material is not correctly arranged on the stage when the sensor detects a negative pressure. To judge And features.

  The invention according to claim 7 is the method for determining an arrangement state of the printed material according to claim 6, wherein the printed material has a substantially rectangular shape in a plan view, and fan-shaped cuts are formed at four corners of the printed material. The notches are provided so that the shapes of the notches at three of the four corners are different, and corner pins corresponding to the shapes of the four corners are previously provided at positions corresponding to the four corners of the substrate of the printing apparatus. It is characterized by providing.

  The invention according to an eighth aspect is the method for determining an arrangement state of the substrate according to the seventh aspect, wherein the printed material is out of the printing range and is asymmetric with the third reference hole with respect to the one center line. A fourth reference hole is provided.

  A ninth aspect of the present invention is the method for determining an arrangement state of a printed material according to a seventh aspect, wherein a notch is further provided in a side parallel to the center line of the printed material.

  According to the first to ninth aspects of the present invention, an arrangement error is detected only by visually recognizing the arrangement state by determining the arrangement state of the green sheet or the printing material based on the suction state in the suction hole. Compared to the case, mistakes can be detected with certainty.

  Further, according to the invention of claim 2, it is possible to suitably suppress the lamination of the green sheets with 180 ° reversal or front / back reversal.

  Further, according to the inventions of claims 3 to 5 and claims 7 to 9, it becomes difficult to forcibly dispose the green sheet or the printed material in an erroneous state, and such an arrangement is difficult. Since the state to be performed is easily visually recognized, it is easier to detect that an arrangement error has occurred.

  Further, according to the inventions of claims 4, 5, 8, and 9, since it becomes easier to visually recognize that the green sheet or the printed material is about to be arranged in an incorrect state, an arrangement error is made. It becomes easier to detect the occurrence of.

It is a figure which illustrates blank sheet S0. It is a figure which illustrates sheet | seat S1 for lamination | stacking used for formation of a laminated body. FIG. 3 is a diagram illustrating a state in which the stacking sheet S1 is correctly arranged on the stage 10 of the printing apparatus 1. It is a figure which shows the mode in the A-A 'cross section of Fig.3 (a) at the time of mounting the sheet | seat 1 for lamination | stacking upside down. FIG. 3 is a view showing a state in which a lamination sheet S1 is correctly arranged on a lamination jig 30. It is a figure which illustrates the mode of the perpendicular section of the layered product concerning an example. It is a figure which shows the measurement result of lamination | stacking deviation about each layer of A layer from E layer. It is a figure which shows the standard deviation (sigma) of the lamination | stacking deviation in each Example and a comparative example.

<Green sheet>
FIG. 1 is a diagram illustrating a blank sheet S0, which is a ceramic green sheet that has not been subjected to any processing after molding. In the present embodiment, the blank sheet S0 has a rectangular shape when viewed from above. For convenience, the longitudinal direction of the rectangle (left and right direction in the drawing in FIG. 1) is the x-axis direction, and the short direction of the rectangle (up and down direction in the drawing in FIG. 1) is the y-axis direction. ).

  FIG. 2 is a diagram illustrating a lamination sheet S1 used for forming a laminated body in the embodiment of the present invention. The lamination sheet S1 is provided with various reference holes and notches by punching the blank sheet S0 using a predetermined mold. The lamination sheet S1 is subjected to a lamination process after a circuit pattern is printed or the like as necessary. In the laminating process, a plurality of types of laminating sheets S1 each subjected to a printing process or the like are laminated in a predetermined order and integrated.

  The lamination sheet S1 has five kinds of reference holes (first reference hole H1 to fifth reference hole H5) having different roles and four kinds of notches at various positions on the peripheral edge that are outside the printing range during printing. (First notch N1 to fourth notch N4). These notches serve as arrangement indexes (marks) when the lamination sheet S1 is arranged at a predetermined position during printing or lamination described later. In the present embodiment, when the lamination sheet S1 is viewed from above, the state in which the respective reference holes and notches are in the positional relationship shown in FIG. Suppose that it is correctly placed. However, when the back side printing is performed on the lamination sheet S1, the lamination sheet S1 in the positional relationship shown in FIG. 2 is in an inverted state with the y axis direction as the inversion axis. It is assumed that the sheet S1 is correctly arranged. Hereinafter, when describing such a case, it is noted as such.

  The first reference hole H1 and the second reference hole H2 are provided in the vicinity of the upper and lower sides of the lamination sheet S1 in the drawing, and at the midpoint portion in the x-axis direction. As shown in FIG. 2, when the size in the x-axis direction of the lamination sheet S1 is X, the distance between the first reference hole H1 and the second reference hole H2 and the end portion in the x-axis direction of the lamination sheet S1 is X / 2. In other words, the first reference hole H1 and the second reference hole H2 are arranged to face each other in the y-axis direction. The first reference hole H1 and the second reference hole H2 arranged in this manner are used as a reference for positioning the lamination sheet S1 during printing and lamination.

  The third reference hole H3 and the fourth reference hole H4 are provided on the same straight line in the x-axis direction with the second reference hole H2 interposed therebetween. In other words, it can be said that the third reference hole H3 and the fourth reference hole H4 are provided on a straight line orthogonal to a straight line passing through the first reference hole H1 and the second reference hole H2. However, the third reference hole H3 and the fourth reference hole H4 are provided such that the distance x3 between the former and the second reference hole H2 is different from the distance x4 between the latter and the second reference hole H2. That is, the third reference hole H3 and the fourth reference hole H4 are in asymmetric positions with respect to the second reference hole H2 (more strictly, with respect to the midpoint in the x-axis direction of the lamination sheet S1). . The third reference hole H3 and the fourth reference hole H4 are provided for the purpose of preventing 180 ° reversal and front / back reversal of the lamination sheet S1 during printing and lamination.

  A large number of fifth reference holes H5 are discretely provided at the peripheral edge of the lamination sheet S1. The fifth reference hole H5 is used as a reference (marker) when performing dimension evaluation and the like of the lamination sheet S1. The arrangement position and the number of the fifth reference holes H5 are not limited to those shown in FIG.

  The first notch N1, the second notch N2, and the third notch N3 are provided in a fan shape at the four corners of the lamination sheet S1. Two third cutouts N2 are provided and are arranged to face each other in the x-axis direction. The first notch N1, the second notch N2, and the third notch N3 are formed to have different shapes by changing the radii of the punched portions that form the notches in the mold. Become. This is also to prevent the 180 ° from being inverted by mistake during printing and laminating.

  The fourth cutout N4 is provided in a rectangular shape on the right side of the lamination sheet S1 as viewed in the drawing. The fourth cutout N4 is provided for the purpose of preventing the 180 ° reversal of the lamination sheet S1.

<Green sheet layout during printing>
Next, arrangement and fixing of the lamination sheet S1 when printing is performed on the lamination sheet S1 will be described. FIG. 3 is a diagram illustrating a state in which the lamination sheet S1 is correctly arranged on the stage 10 of the printing apparatus 1. FIG. 3A is a top view, and FIG. 3B is a cross-sectional view taken along the line AA ′ of FIG. FIG. 4 is a view showing a state in the AA ′ cross section of FIG. 3A when the lamination sheet S1 is placed upside down.

  The printing apparatus 1 is an apparatus that performs printing on the lamination sheet S1 arranged and fixed on the stage by, for example, a known screen printing method.

  In the printing apparatus 1, the stage 10 is provided with a first corner pin 11, a second corner pin 12, and a third corner pin 13. The first corner pin 11, the second corner pin 12, and the third corner pin 13 are the first notch N1, the second notch N2, and the second notch N1, respectively, in a state where the lamination sheet S1 is correctly placed on the stage 10. It is provided so as to contact the third notch N3. As described above, the first notch N1, the second notch N2, and the third notch N3 have different shapes. Accordingly, the first corner pin 11, the second corner pin 12, and the second notch The shapes of the three corner pins 13 are also different from each other.

  The stage 10 is further provided with a first reference pin 14 and a second reference pin 15. The first reference pin 14 and the second reference pin 15 are respectively fitted to the first reference hole H1 and the second reference hole H2 in a state where the lamination sheet S1 is correctly arranged on the stage 10. It is provided.

  Furthermore, the printing apparatus 1 is configured to suck and fix the arranged lamination sheet S1. Specifically, as shown in FIG. 3B, the stage 10 is provided with a large number of suction holes 16. The suction hole 16 communicates with suction means 18 such as a rotary pump through a suction path 17. The stacking sheet S1 is placed on the stage 10 by operating the suction means 18 in a state where the stacking sheet S1 is correctly arranged on the stage 10 and sucking air from the suction holes 16 to apply a negative pressure to the suction holes 16. Can be fixed by suction.

  In addition, the printing apparatus 1 is provided with a detection suction hole 19 and a sensor 20. These are provided in order to detect that the lamination sheet S1 is not correctly arranged. Details of the detection suction hole 19 and the sensor 20 will be described later.

  In the printing apparatus 1 having such a configuration, the first notch N1, the second notch N2, and the third notch N3 correctly contact the first corner pin 11, the second corner pin 12, and the third corner pin 13. The first and second reference pins 14 and 15 are fitted into the first reference hole H1 and the second reference hole H2, respectively, so that the lamination sheet S1 is correctly arranged. That is, the lamination sheet S1 is sucked and fixed to the stage 10 in a state where the arrangement position is defined everywhere on the outer peripheral portion. Thereby, in the lamination sheet S1, deformation such as elongation and wrinkle is less likely to occur, and the lamination sheet S1 is correctly arranged at a predetermined position. As a result, printing is correctly performed at the scheduled printing position of the lamination sheet S1.

  Further, in the present embodiment, the shape and printing of the laminating sheet S1 are ensured so that the laminating sheet S1 can be reliably detected when the laminating sheet S1 is erroneously placed on the stage 10 in a 180 ° inverted or front / back inverted state. The following devices are devised in the configuration of the device 1.

  First, the first notch N1, the second notch N2, and the third notch N3 provided at the four corners of the lamination sheet S1, the first corner pins 11 provided on the printing apparatus 1 corresponding to these, the first notch The two corner pins 12 and the third corner pins 13 have different shapes.

  When the stacking sheet S1 is arranged 180 ° inverted or upside down, the first notch N1, the second notch N2, and the third notch N3 are at corner pins different from those when correctly arranged. Will be located. Therefore, even if it is going to arrange | position the sheet | seat S1 for lamination | stacking, an edge part will float from the stage 10, and it will become impossible to arrange | position correctly. If the arrangement is forcibly arranged, the lamination sheet S1 may be bent. When the operator manually sets the laminating sheet S1 in the printing apparatus 1, it is easily recognized that such a problem has occurred in the arrangement state of the laminating sheet S1, so that the worker himself / herself makes an incorrect arrangement. It becomes easier to notice that you are going.

  Second, in the lamination sheet S1, the fourth notch N4, the third reference hole H3, and the fourth reference hole H4 are asymmetrically arranged.

  When the lamination sheet S1 is reversed 180 ° or when the reversal axis is reversed in the y-axis direction, the fourth notch N4 that should be at the right end is correctly located at the left end, and the third reference hole The positional relationship between H3 and the fourth reference hole H4 with respect to the midpoint in the x-axis direction is reversed. These have the effect of allowing the operator who sets the laminating sheet S1 to the printing apparatus 1 to visually grasp an error in the arrangement of the laminating sheet S1. Alternatively, it is also possible to determine the presence or absence of these notches and reference holes at positions where they should be originally arranged by image processing.

  Third, the printing device 1 is provided with a detection suction hole 19 and a sensor 20.

  The detection suction hole 19 is provided in the stage 10 at a position and shape communicating with the third reference hole H3 in a state where the lamination sheet S1 is correctly arranged. Similarly to the suction hole 16, the detection suction hole 19 communicates with the suction means 18 through the suction path 17. However, the sensor 20 is connected only to the suction path 17 connected to the detection suction hole 19. It is provided for the purpose of detecting the pressure state. A known sensor can be applied to the sensor 20.

  The sensor 20 is configured to determine that the arrangement state of the lamination sheet S1 is not normal when a negative pressure is detected in the state where the lamination sheet S1 is arranged. As shown in FIG. 3B, when the stacking sheet S1 is normally disposed, the detection suction hole 19 and the third reference hole H3 communicate with each other, so that the detection suction hole 19 is in a released state. Even if the suction means 18 is operated, no negative pressure is generated. On the other hand, when the laminating sheet S1 is placed upside down, as shown in FIG. 4, the detection suction hole 19 is blocked by the laminating sheet S1, so that the suction means 18 is operating. Then, it becomes a negative pressure state. The same applies to the case of 180 ° inversion. In these cases, the sensor 20 detects the negative pressure state, and determines that the arrangement state of the lamination sheet S1 is abnormal. Since this determination is performed regardless of whether or not the state of the lamination sheet S1 is directly visually recognized, it is possible to reliably detect an abnormality in the arrangement state even when the operator has an oversight. Can do. Further, even when the setting work of the stacking sheet S1 on the stage 10 is automated, it is possible to reliably detect an abnormality in the arrangement state.

  Note that the detection suction hole 19 may be provided in a mode communicating with the fourth reference hole H4.

  In addition, the printing apparatus that performs backside printing is configured such that each component satisfies the above-described relationship when the lamination sheet S1 is in the correct arrangement in that case.

  As described above, in the present embodiment, the stacking sheet is provided with the reference hole and the notch in the above-described manner, and the printing apparatus has a structure corresponding to this, so that the printing sheet can be printed. A misplacement of the lamination sheet S1 can be detected in parallel by a plurality of means. In particular, by determining the arrangement state of the lamination sheets based on the suction state in the detection suction hole, it is possible to reliably detect a mistake as compared to the case of detecting a mistake only by visually recognizing the arrangement state. Can do.

  In addition, by using a plurality of notches and reference holes in combination to define the arrangement position of the laminating sheet everywhere in the outer peripheral portion, the laminating sheet is less prone to deformation such as stretching and wrinkling, and the laminating sheet It is placed correctly at the planned location. As a result, printing is correctly performed at the scheduled printing position of the lamination sheet.

  It should be noted that the method for preventing misplacement at the time of printing of the lamination sheet S1 described so far is not necessarily applied only to the lamination sheet S1, and printing is performed by arranging and fixing a substrate to be printed on a predetermined stage. It is generally applicable when doing so.

<Green sheet arrangement during lamination>
Next, arrangement and fixing of the laminating sheet S1 when laminating a plurality of laminating sheets S1 will be described. FIG. 5 is a view showing a state in which the lamination sheet S1 is correctly arranged on the lamination jig 30. FIG. FIG. 5A is a top view in a state in which a certain lamination sheet S1 is arranged, and FIG. 5B is a B- in FIG. 5A in a state in which all the lamination sheets S1 are laminated. It is B 'sectional drawing.

  As shown in FIG. 5B, the stacking jig 30 is sandwiched between a lower mold (lower mold) 32 and an upper mold (upper mold) 33 on the base 31. Lamination sheets S1 are sequentially laminated. In addition, protective members 34 and 35 are interposed between the lower mold 32 and the lamination sheet S1 and between the upper mold 33 and the lamination sheet S1, respectively.

  The stacking jig 30 is provided with a first corner pin 41, a second corner pin 42, and a third corner pin 43. The first corner pin 41, the second corner pin 42, and the third corner pin 43 are the first notch N1, the second notch N2, and the third notch, respectively, in a state where the lamination sheets S1 are correctly laminated. It is provided so as to contact the notch N3. Similar to the first corner pin 11, the second corner pin 12, and the third corner pin 13 of the printing apparatus 1, the first notch N 1, the second notch N 2, and the third notch are also provided in the stacking jig 30. Corresponding to the different shapes of N3, the shapes of the first corner pin 41, the second corner pin 42, and the third corner pin 43 are different from each other.

  Further, the stacking jig 30 is provided with a first reference pin 44 and a second reference pin 45. The first reference pin 44 and the second reference pin 45 are fitted in the first reference hole H1 and the second reference hole H2 of each lamination sheet S1 in a state where the respective lamination sheets S1 are correctly laminated. To be provided.

  In addition, the stacking jig 30 is provided with a plurality of side pins 46 corresponding to the respective sides of the stacking sheet S1. In FIG. 5, the case where one side pin 46 is provided on the short side and two side pins 46 are provided on the long side of the lamination sheet S <b> 1 is illustrated. The arrangement is not limited to this.

  The side pins 46 are provided for the purpose of defining the lamination position of the lamination sheet S1 from the outer peripheral side. In the laminating jig 30, each laminating sheet S <b> 1 can be laminated only in a mode in which each side substantially contacts the side pin 46.

  Further, a positioning pin 47 is provided at a position of the stacking jig 30 where the third reference hole H3 is positioned in a state where the stacking sheet S1 is correctly arranged.

  The positioning pins 47 are provided for the purpose of suppressing the stacking deviation of the stacking sheet S1 and uniquely determining the stacking direction. That is, even if an attempt is made to laminate the lamination sheet S1 in a state where it is reversed 180 ° or upside down, since there is no hole through which the positioning pin 47 passes, the lamination in such a mode is suitably prevented. . For example, since the fourth reference hole H4 and the third reference hole H3 are asymmetrically arranged, the positioning pin 47 can be fitted into the fourth reference hole H4 even if the reverse axis is reversed with the reverse axis as the y-axis direction. Absent.

  In the case shown in FIG. 5, the positioning pin 47 is provided at the location where the third reference hole H3 is located. Instead, the positioning pin 47 is provided at the location where the fourth reference hole H4 is located. There may be.

  By the action of the side pins 46 and the positioning pins 47, in the present embodiment, the stacking sheets S1 are stacked in the correct direction, and stacking misalignment is suitably suppressed. In the present embodiment, “lamination misalignment” does not simply mean that the laminating sheets S1 are laminated without being displaced, but as described above. On the other hand, it is meant that the positional accuracy of the print pattern in the laminate is ensured by using the lamination sheet S1 on which the print pattern is correctly formed as the object of lamination.

  Further, the first cutout N1, the second cutout N2, and the third cutout N3 of the lamination sheet S1, and the first corner pin 41, the second corner pin 42, and the third corner pin 43 of the lamination jig 30 are provided. And the asymmetrical arrangement of the fourth notch N4 are the same as those in the printing apparatus 1, and as described above, this can be easily recognized when a problem based on these occurs.

  In other words, the lamination jig is configured so that the reference holes and notches provided in the lamination sheet for preventing misplacement during printing can also be used for preventing mistakes during lamination. It is possible to reliably detect mistakes.

  As described above, in the present embodiment, printing and laminating mistakes associated with the inversion of the laminating sheet are preferably prevented, and laminating is performed when laminating the laminating sheets to form a laminate. Generation | occurrence | production of deviation is suppressed suitably.

  As in the above-described embodiment, five lamination sheets S1 in which notches and reference holes are formed are produced, and each of them is printed by the printing apparatus 1, and these are laminated using the lamination jig 30. By doing so, the five laminated bodies of Example 1- Example 5 were produced.

  On the other hand, five sheets for laminating provided with only the first reference hole H1 and the second reference hole H2 are prepared, and printing and laminating are performed in the same manner to obtain five laminated bodies of Comparative Examples 1 to 5. It was.

  In each example and each comparative example, a pattern having the same shape with the midpoint position of the left and right end portions of the laminate as a reference point is printed on each of the lamination sheets constituting the laminate.

  The obtained laminate was cut perpendicularly at the position where the print pattern was formed, and the deviation from the reference point at the center position (lamination deviation) was measured for each print pattern. FIG. 6 is a diagram illustrating a state of a vertical cross section of each stacked body in such a case. Note that the five layers formed by the individual lamination sheets are referred to as an A layer, a B layer, a C layer, a D layer, and an E layer in order from the bottom. In the case shown in FIG. 6, the distance Δ is a stacking deviation for the A layer.

  FIG. 7 is a diagram illustrating the measurement result of the stacking deviation for each layer from the A layer to the E layer. FIG. 8 is a diagram showing the standard deviation σ of the stacking deviation in each example and comparative example. According to FIG. 7, in each of Examples 1 to 5, the thickness is generally within ± 0.05 mm in all layers, whereas in Comparative Examples 1 to 5, 0.05 mm or more and 0. There are stacking deviations of up to about 10 mm. Reflecting this result, as shown in FIG. 8, the value of the standard deviation σ is generally smaller in Examples 1 to 5 than in Comparative Examples 1 to 5.

  Such a result indicates that the stacking deviation is suppressed by forming the stacking sheet as in the above-described embodiment, and further performing printing and stacking.

DESCRIPTION OF SYMBOLS 1 Printing apparatus 10 Stage 11, 41 1st corner pin 12, 42 2nd corner pin 13, 43 3rd corner pin 14, 44 1st reference pin 15, 45 2nd reference pin 16 Suction hole 18 Suction means 19 Suction for detection Hole 20 Sensor 30 Lamination jig 31 Base 32 Lower mold 33 Upper mold 34, 35 Protection member 46 Side pin 47 Positioning pin H1 to H5 First reference hole to fifth reference hole N1 to N4 First notch to fourth cut Chip S1 Laminate sheet

Claims (9)

A printing process for printing on at least one printing target green sheet in the printing apparatus;
A laminating step of laminating a plurality of green sheets including the at least one printing target green sheet to form a laminate;
A green sheet processing method comprising:
An arrangement index forming step for forming an arrangement index serving as an arrangement index in the printing step and the stacking step on the plurality of green sheets including the at least one printing target green sheet prior to the printing step;
Further comprising
In the arrangement index forming step, the first and second reference holes are provided opposite to each other on the center line of the green sheet outside the printing range of the outer peripheral portion of each of the plurality of green sheets. Providing a third reference hole on a straight line passing through the second reference hole and perpendicular to the one center line;
In the printing process, on a stage of a printing apparatus that performs printing on the at least one green sheet, first and second reference pins that fit into the first and second reference holes, and the at least one green sheet are provided. Providing a detection suction hole communicating with the third reference hole in a correctly fixed state;
The printing apparatus includes a suction unit that sucks air from the suction hole, and a sensor that detects a pressure state in the suction hole.
In the printing process, when the sensor detects negative pressure, it is determined that the substrate to be printed is not properly arranged on the stage.
A method for processing a green sheet. It is a processing method of the green sheet according to claim 1,
Each of the plurality of green sheets is correctly stacked on the stacking jig used for stacking the plurality of green sheets in the stacking step, and the first and second reference pins that fit into the first and second reference holes. A positioning pin that fits into the third reference hole in a state where
A method for processing a green sheet. The green sheet processing method according to claim 1 or 2,
Each of the plurality of green sheets has a substantially rectangular shape in plan view,
In the arrangement index forming step, at the four corners of the plurality of green sheets, fan-shaped cutouts are provided so that the shape of the cutouts at three of the four corners is different,
At least one of the printing apparatus and the stacking jig is provided with corner pins corresponding to the shapes of the four corners in advance at positions corresponding to the four corners of the plurality of green sheets,
A method for processing a green sheet. It is a processing method of the green sheet according to claim 3,
In the arrangement index forming step, a fourth reference hole is provided at a position outside the printing range and asymmetric with the third reference hole with respect to the one center line.
A method for processing a green sheet. It is a processing method of the green sheet according to claim 3,
In the arrangement index forming step, further providing a notch on a side parallel to the center line of each of the plurality of green sheets,
A method for processing a green sheet. A method of determining an arrangement state of the printing material on a stage for fixing the printing material when printing on a sheet-like printing material in a printing apparatus,
Prior to printing, the first and second reference holes are provided opposite to each other on one center line of the printed material outside the printing range of the outer peripheral portion of the printed material, and the second reference hole A third reference hole is provided on a straight line that passes through and perpendicular to the one center line,
The stage is provided with a detection suction hole that communicates with the third reference hole in a state in which the substrate is correctly fixed.
The printing apparatus includes a suction unit that sucks air from the suction hole, and a sensor that detects a pressure state in the suction hole.
When the sensor detects negative pressure, it is determined that the substrate is not correctly arranged on the stage.
A method for determining an arrangement state of a substrate. A method for determining an arrangement state of a printing material according to claim 6,
The substrate has a substantially rectangular shape in plan view;
While providing fan-shaped cutouts at the four corners of the substrate, the cutout shapes at three of the four corners are different,
In advance, corner pins corresponding to the shape of the four corners are provided at positions corresponding to the four corners of the substrate of the printing apparatus;
A method for determining an arrangement state of a substrate to be printed. A method for determining an arrangement state of a printing material according to claim 7,
Providing a fourth reference hole at a position outside the printing range and asymmetric with the third reference hole with respect to the one center line;
A method for determining an arrangement state of a substrate to be printed. A method for determining an arrangement state of a printing material according to claim 7,
A notch is further provided on a side parallel to the center line of the substrate,
A method for determining an arrangement state of a substrate to be printed.

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