KR20080046105A - Printing plate - Google Patents

Abstract

A printing plate is provided to allow a user to observe swelling of a blanket for controlling swelling at high accuracy by forming recessed portions each having progressively different depths on a non-printing region of the blanket. A printing plate(1) comprises a plurality of recessed portions(15) for controlling swelling of a non-printing region(14) within a blanket. The recessed portions have depths that are progressively different, wherein the depths of direction of width perpendicular to a printing direction where the blanket transfers an image to be printed are different through the printing direction.

Description

Print version {PRINTING PLATE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to precision printing using a blanket for offset printing and ink transfer, and relates to a printing plate used for thin line and thin film printing. In particular, it relates to a liquid crystal color filter, and a printing plate used for printing an electronic circuit pattern.

In recent years, the reverse printing method has been used for fine printing as thin film and thin line printing. The reverse printing method is a printing method in which a low viscosity ink is applied to a blanket containing silicon as a main component, an unnecessary pattern of the ink is removed from the convex plate having a negative pattern, and the pattern remaining on the blanket is transferred to the printed material (example See, for example, patent documents 1 and 2).

The reverse printing method forms a convex portion and a concave portion in the plate in order to remove unnecessary ink among the inks applied to the blanket from the convex portion of the plate. As a manufacturing method of such a plate, there exists a method generally manufactured by etching a glass plate with chemical liquids, such as a fluoric acid. Moreover, a metal may be used as a material of a board.

The pattern for forming an image includes, for example, various patterns such as a pattern relating to a pixel and an alignment mark for attaching to a thin-film transistor (abbreviated TFT) substrate. These patterns mask the part in which the base material of a board is not etched with an etching material, and the plate surface or the whole board is immersed in etching liquid, and the image pattern required for a board surface is obtained. The depth of the etching depends on the line width for forming the image, and the portions requiring fine lines need to make the etching shallow. The thick caustic line does not need to be particularly shallow in etching.

The printing method and the transfer method are not limited to the reverse printing method, and the blanket forms a image on the blanket by niping the plate. If the line width to be etched is wide and the depth of etching is shallow, the blanket surface is in contact with the bottom of the recessed portion where the plate is etched so that a normal image cannot be formed on the blanket. For this reason, about the part which etches wide line width normally, the depth of etching is increased and deepened. Thus, the unevenness | corrugation differing in depth is formed in the caustic line part of one board | substrate surface according to the line width of a required caustic line.

In an actual printing process, when a low viscosity ink is apply | coated to a blanket, the solvent contained in an ink will permeate into a blanket and swell the blanket. The ink-coated blanket contacts the convex portion of the plate and transfers unnecessary ink to the plate and is removed from the blanket. The blanket swells and bulges so that it also contacts the bottom of concave portions other than the convex portion of the plate, and thus the original blanket The ink to be left is transferred to the plate, so that a normal image pattern cannot be transferred. In addition, at the beginning of printing, even if the blanket surface to which ink is applied does not contact the recess of the plate, when the number of prints increases and the blanket begins to swell more than necessary, the blanket surface to which the ink is applied touches the recess of the plate. As a result, normal image patterns cannot be transferred.

It is also conceivable to make the depth of the recess of the plate sufficiently larger than the amount of swelling of the blanket, but in order to print and transfer the necessary wires with good accuracy, it is important not to swell the blanket more than necessary. In order to transfer the ink from the blanket, proper solvent penetration into the blanket is required. Thus, in order to infiltrate the solvent appropriately, a technique of absorbing the infiltrated solvent (see, for example, Patent Document 3), a technique of suitably absorbing the solvent into the blanket (see, for example, Patent Document 4), and controlling the swelling of the blanket Technology (for example, refer patent document 5) is proposed.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2000-289320

[Patent Document 2] Japanese Unexamined Patent Publication No. 2001-56405

[Patent Document 3] Japanese Unexamined Patent Publication No. Hei 6-14385

[Patent Document 4] Japanese Patent Application Laid-Open No. 9-254365

[Patent Document 5] Japanese Unexamined Patent Publication No. 2006-224493

As described above, in order to transfer ink from the blanket, a technique of infiltrating a suitable solvent into the blanket has been proposed, but there is a problem that the amount of swelling of the blanket is not recognized as a printed matter. In general offset printing, in order to manage color density, the gray scale which manages color density is printed in the non-pixel line part, and it manages whether the one by one printed matter is normally printed. In this reverse printing method, it is important to swell the blanket and manage the depth of the plate.

Therefore, the objective of this invention is providing the printing plate which can confirm the swelling amount of a blanket by viewing a printed object.

The present invention is a printing plate, characterized in that a recess for managing swelling of the blanket is formed in the non-fire line.

Moreover, this invention is characterized in that the said recessed part is formed in multiple numbers by which the depth dimension differs in steps.

In addition, the present invention is characterized in that the concave portion has a portion in which the widthwise direction substantially perpendicular to the printing direction in which the blanket prints the printed object is different from each other over the printing direction.

According to this invention, the recessed part which manages swelling of a blanket is formed in the non-sharpened part of a printing plate. By using the above-described printing plate in so-called offset printing, which transfers ink to a blanket and prints, ink based on the concave portion in the non-wire portion of the printed object is transferred to the printed object. The ink-coated blanket is brought into contact with the convex portion formed on the line portion of the printing plate, and the unnecessary ink is transferred to the printing plate and removed from the blanket. The blanket also contacts the bottom of the recess described above according to the amount of swelling. Therefore, the amount of swelling of the blanket can be indirectly evaluated by observing the state of the ink printed on the non-wire portion. This makes it possible to easily grasp the swelling amount of the blanket, the deterioration of the blanket, the change in the printing pressure due to the swelling of the blanket, and the like. Therefore, the swelling management of a blanket becomes possible by the simple structure which forms a recessed part in a non-wire line part.

Moreover, according to this invention, the said recessed part is formed in multiple numbers by which the depth dimension differs in steps. As the depth dimension of the recess increases, it becomes difficult for the blanket to contact the bottom of the recess. When the swelling amount of the blanket increases, the blanket contacts the bottom even if the depth dimension of the recess is large. Therefore, by forming a plurality of recesses having different depth dimensions in steps, the depth dimension of the recess and the state of the ink printed on the non-radiation line based on the recess can be observed, so that the amount of swelling of the blanket can be grasped in more detail. Thereby, the swelling amount of the blanket can be managed more accurately.

Moreover, according to this invention, the said recessed part has the part in which the dimension of the width direction which is substantially orthogonal to the printing direction in which a blanket prints a to-be-printed body differs over a printing direction. As the dimension of the concave portion decreases in width, it becomes difficult for the blanket to contact the bottom of the concave portion. When the swelling amount of the blanket increases, the blanket contacts the bottom even if the dimension of the concave portion in the width direction is small. Therefore, the swelling amount of the blanket can be grasped in more detail by observing the dimension of the width direction of the concave portion and the state of the ink printed on the non-visible portion based on the concave portion. Thereby, the swelling amount of the blanket can be managed more accurately.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated, referring drawings. In each aspect, parts corresponding to the matters described in the preceding aspects are denoted by the same reference numerals, and redundant descriptions may be omitted. When only a part of the configuration is described, the parts other than the configuration are the same as those described above. Not only the combination of the parts specifically described in each embodiment of the embodiment, but particularly, if the combination does not interfere, the embodiments may be partially combined. The start condition of each flowchart is not necessarily limited only to the start condition described. The printing machine according to the present embodiment is applied to an offset printing machine capable of forming, for example, a color filter of three primary colors. However, the present invention is not limited to only three primary color filters. For example, it can apply also to manufacture of one or more color filters, a thin wire, thin film printing, an electronic circuit pattern, etc.

1 is a front view showing the printing plate 1 of the first embodiment of the present invention. FIG. 2 is a diagram illustrating a printer 2 that prints using the printing plate 1. The printing machine 2 is a drying means (not shown) which coats the printer main body 3, the blanket 4, ie, the blanket body 5 in which the rubber sheet is wound, and the ink 21 applied to the blanket 4, and a coater. It comprises a gantry moving stage (it is simply called a "stage") 6, the platen plate 7, the crushed platen 8, and a control apparatus (not shown). The stage 6 is comprised so that relative movement with respect to the printer main body 3 is possible. The relative movable direction is taken as the x direction. In FIG. 2, the x, y and z directions are represented by arrows x, y and z, respectively. The blanket body 5 is rotatably supported around the y direction axis, and is disposed on the other end side of the stage 6 in the x direction.

On the stage 6, a priming roller 9, a coater dip tank 10, a coater gantry 11 and a slide mechanism 12 are provided. The priming roller 9 is also rotatably supported around the y-direction axis. The coater dip tank 10 is arrange | positioned at the x direction one end side of the stage 6, and the priming roller 9 is arrange | positioned near the x direction middle of the stage 6.

The cotter gantry 11 includes a cotter head 13. The slide mechanism 12 is provided in the upper end part of the stage 6. The slide mechanism 12 has a function of moving the coater head 13 along the x direction. The coater head 13 can be positioned with respect to the coater dip tank 10, the priming roller 9, and the blanket body 5 by the slide mechanism 12, the drive source which is not shown in figure, and a control apparatus, respectively. In FIG. 2, the form in which the coater head 13 is arrange | positioned in the position which opposes the priming roller 9 is shown.

The substrate 22 (not shown) as a printed object is positioned and supported in the x and y directions by the ground plate 8. The said board | substrate 22 consists of a topping material, such as glass. The crushed material is not necessarily limited to glass, but may be a film, for example. The pattern printed on the to-be-printed body is imaged with a plurality of Charge Coupled Device (CCD) cameras provided in the printer main body 3, respectively. The control apparatus calculates the deviation amount of the printed pattern from the predetermined reference displacement based on the imaging result. In order to correct the shift amount, the substrate 22 is positioned and supported on the ground plate 8.

The printing plate 1 (hereinafter sometimes referred to as "plate"), which is a convex plate shown in FIG. 1, is positioned and supported by the platen base 7 in the x and y directions. A plurality of CCDs (not shown) for position misalignment correction are attached to the surface portion of the plate 1 and the non-fire line portion 14, and the plurality of alignment marks are provided on the printer main body 3. Image each with a camera.

The said control apparatus calculates the shift amount of the some alignment mark from the predetermined reference position from the imaging result. In order to correct the amount of misalignment, the plate 1 is positioned and supported on the platen plate 7.

Moreover, the plate 1 is provided with the recessed part 15 which manages swelling of the blanket 4 in the non-wire part 14 in this embodiment in multiple numbers. As shown in FIG. 1, the board | substrate 1 is substantially rectangular plate shape, for example, and the wire line part 16 and the non-wire line part 14 are formed in one surface part of a thickness direction. The wire line part 16 is formed in the center part of the thickness direction one surface part of the board | plate 1. In FIG. 1, in order to make understanding easy, the specific convex part formed in the wire line part 16 is abbreviate | omitted and shown. The non-fired part 14 is formed in the outer peripheral part of the thickness direction one surface part of the board 1. Therefore, the non-fire line part 14 is formed so that the fire line part 16 may be enclosed.

In the present embodiment, a plurality of concave portions 15 having different depth dimensions are formed in the non-fired portions 14 of the plate 1. Portions other than the recessed part 15 in the non-fire line 14 are the same height as the convex portion formed in the line of fire 16. In the state where the plate 1 is arranged on the platen plate 7, the direction in which the long side extends is the y direction, and the direction in which the short side extends is the x direction. Each recessed part 15 is arranged in multiple numbers along the y direction and the x direction. Such concave portions 15 may be formed at the same time as forming the convex portions formed on the line portions 16 by the same manufacturing method as the convex portions formed on the line portion 16, or may be formed separately.

The depth dimension of the recessed part 15 is 5 micrometers or more and 200 micrometers or less, It is preferable that they are 5 micrometers or more and 100 micrometers or less, Furthermore, they are 5 micrometers or more and 50 micrometers or less. When the blanket 4 swells and becomes soft, and the blanket 4 contacts the bottom 17 (refer FIG. 3 and FIG. 6) of the recessed part 15 whose depth dimension is larger than 200 micrometers, the transfer precision of a thin wire pattern is improved. I can't keep it. Therefore, as for the depth dimension of the recessed part 15, 200 micrometers or less are preferable. When the swelling control of the blanket 4 is managed with high precision, the maximum value of the depth dimension of the recessed part 15 can be about 100 micrometers, and also about 50 micrometers. If the maximum value of the depth dimension of the recessed part 15 is about 100 micrometers, and also about 50 micrometers, and the some recessed part 15 is formed so that the depth dimension may become small step by step, swelling of the blanket 4 will be carried out hereafter. The state can be managed with better precision. Thus, the recessed part 15 is formed in multiple numbers, and the depth dimension of each recessed part 15 differs step by step. As the depth dimension of the recessed portion 15 increases, it becomes difficult for the blanket 4 to contact the bottom 17 of the recessed portion 15. When the swelling amount of the blanket 4 increases, the depth of the recessed portion 15 is increased. Even when the dimension is large, the blanket 4 contacts the bottom 17. Therefore, by observing the depth dimension of the recessed part 15 and the state of the ink 21 printed on the non-fired part 14 based on the recessed part 15, the swelling amount of the blanket 4 can be grasped | ascertained in more detail. have. Thereby, the swelling amount of the blanket 4 can be managed more accurately.

Moreover, in this embodiment, the recessed part 15 has the part in which the dimension of the width direction which is substantially orthogonal to the printing direction in which the blanket 4 prints a to-be-printed body differs over a printing direction. Therefore, the recessed part 15 is formed in triangular shape as seen from the thickness direction outer side, for example as shown in FIG. The printing direction is the x direction in which the stage 6 is relatively movable with respect to the printer main body 3 in this embodiment. Therefore, the width direction of the concave portion 15 becomes the y direction. Since the recessed part 15 is a triangular shape, it has the taper-shaped edge 18 (refer FIG. 3 and FIG. 6) over the printing direction seen from the thickness direction outer side. As the concave portion 15 having portions in the width direction substantially orthogonal to the printing direction that differ from each other in the printing direction, there are wedge shapes, ellipses, circular shapes, and the like in addition to the triangular shape. As the dimension of the width direction of the recessed part 15 becomes small, it becomes difficult for the blanket 4 to contact the bottom 17 of the recessed part 15, but when the swelling amount of the blanket 4 becomes large, the recessed part 15 Even when the dimension of the width direction of () is small, the blanket 4 contacts the bottom 17. Therefore, by observing the dimension of the width direction of the recessed part 15 and the state of the ink 21 printed on the non-fired part 14 based on the recessed part 15, the swelling amount of the blanket 4 is explained in more detail. I can figure it out. Thereby, the swelling amount of the blanket 4 can be managed more accurately.

3 is an enlarged view of the non-fire line portion 14 (upper left side in FIG. 1) near the long side of the printing plate 1, in which the upper side is a front view and the lower side is a longitudinal sectional view of the recess 15. In this embodiment, in the short side part 19 which is near the short side of the non-fire line part 14 of the board | substrate 1, the depth dimension is E micrometer, D micrometer, C micrometer, and B micrometer (B> C> D> E). , A concave portion 15 of an equilateral triangle having one side of 5 mm is formed, respectively. The long side portion 20 near the long side of the non-fired portion 14 of the plate 1 has an equilateral triangle having the same size as the short side portion 19 and has a depth dimension of E μm, D μm, C μm, B μm, and A μm ( A set of five concave portions 15 each of A> B> C> D> E) is provided, and a total of four sets of concave portions 15 are formed on two sides and two sets on one side, respectively. As an example of the depth dimension, A μm is 50 μm, B μm is 20 μm, C μm is 15 μm, D μm is 10 μm, and E μm is 5 μm. In each long side portion 20, two sets of concave portions 15 are arranged along the y direction, and the directions toward the vertices spaced apart in the y direction from one side substantially parallel to the x direction of each set of triangles are mutually different. It is formed to face. Moreover, although the magnitude | size of the recessed part 15 changes also with the area of the non-fire | wire part 14, the magnitude | size which a person can recognize, for example, one side is 2 mm or more and 10 mm or less, especially about 5 mm is preferable. Do. As can be seen from this example, when forming the plural concave portions 15, it is preferable to make the depth dimension up to the bottom 17 different in stages. Moreover, it is not necessary to make depth dimensions different about all the some recessed parts, For example, what is necessary is just to set depth dimensions differently about 3-10 steps.

FIG. 4 is a cross-sectional view showing the manufacturing method of a color filter using the printing plate 1 step by step, and FIG. 4 (a) is an organic material which is an ink 21 on a blanket 4 wound on a blanket body 5. Sectional drawing which shows the state which apply | coats the coloring agent 21 with the coater head 13, FIG.4 (b) shows the convex part of the board | substrate 1 partially with the organic coloring agent 21 from the surface of the blanket 4; 4 (c) is a cross-sectional view showing a state in which the organic colorant 21 remaining on the surface of the blanket 4 is transferred to the surface of the substrate 22 and attached to 1a).

As shown in FIG. 4A, the coater head 13 is a liquid organic colorant (from the gap between the opposing dies so that the organic colorant 21 forms a uniform layer on the surface of the blanket 4). 21) Spill. Next, as shown in FIG.4 (b), if the organic coloring agent 21 is partially attached to the convex part 1a of the board | substrate 1 from the surface of the blanket 4, and it will remove, the blanket 4 will be carried out. The organic colorant 21 corresponding to the shape of the pixel remains on the surface of the. Thereafter, as shown in FIG. 4C, the organic colorant 21 remaining on the surface of the blanket 4 is transferred to the surface of the substrate 22 to form a portion that becomes an individual colored layer.

The blanket body 5 in which the blanket 4 was wound on the surface is roller-shaped, and the rotation position is controlled with good precision. The relative positioning with respect to the blanket 4 and the board | substrate 1 and the board | substrate 22 can be performed precisely by methods, such as forming a positioning pattern previously. Instead of the organic colorant 21, a material suitable for patterning may be used.

Application of the organic colorant 21 to the silicone rubber blanket 4 is performed in order to obtain necessary film thicknesses, such as a CAP coater and a roll coater, in addition to the case of the coater head 13 shown in FIG. Any other coater may be used. The CAP coater applies, for example, ink corresponding to the organic colorant 21 with the surface tension from below. The roll coater applies ink through the gaps between the rolls.

In FIG. 4A, the organic colorant 21 is apply | coated to a predetermined | prescribed film thickness, rotating the blanket body 5 by which the silicone rubber blanket 4 was wound. It is suitable that the viscosity of the organic coloring agent 21 is 1 mPa * s or more and 50 mPa * s or less, Preferably they are 1 mPa * s or more and 20 mPa * s or less. In FIG. 4B, the plate 1 is brought into contact with the blanket 4 to which the organic colorant 21 is applied, and the organic colorant 21 of the pixel portion is transferred to the convex portion 1a of the plate 1. Let's do it.

In FIG.4 (c), the organic coloring agent 21 which remained in the blanket 4 is transferred to the surface of the board | substrate 22 which is a to-be-printed body, and the pixel of one color is formed. Hereinafter, transfer is repeated to the printed object multiple times for each color primary color required for pixel formation. The organic colorant 21 transferred to the printed material may be dried for each color. In order to increase the production efficiency, it is preferable to repeat the required number of transfers before drying. The use of the silicone rubber blanket 4 uses the water-repellent and peeling functions to ensure that the organic coloring agent 21 is reliably formed on the convex portion 1a of the plate 1 or the surface of the substrate 22 as a printed object. ) Is to be transferred.

FIG. 5: is a figure which shows an example of the ink 21 printed on the non-drawing line part 14. As shown in FIG. 6 is a diagram illustrating a state where the blanket 4 is in contact with the recessed portion 15. By the manufacturing method shown in FIG. 4 mentioned above, the convex part 1a of the wire part 16 of the board | substrate 1 is transferred to a to-be-printed body, The shape based on the recessed part 15 of the non-wire part 14 similarly. It is transferred to the non-radiation part 14 of this to-be-printed body. In order for the blanket 4 to transfer the ink 21 normally, it is necessary to absorb the necessary solvent from the ink 21 and to perform a constant swelling. Usually, the swelling control of the blanket 4 is performed to maintain this swelling. If the swelling control is functioning normally, the depth scale of the arbitrary shape formed in the non-wire part 14 shows a fixed shape as shown to Fig.5 (a). For example, in the initial stage of printing, the amount of swelling of the blanket 4 is small, and as shown in FIG. 5A, the printing state of the ink 21 based on the recesses 15 (hereinafter, simply referred to as “printing state”). Is a distinct normal form.

If the performance of the blanket 4 deteriorates or the swelling control becomes unstable by continuing printing, the printing state of each recess 15 starts to change. When the amount of swelling of the blanket 4 increases, as shown in FIG.5 (b), a printing state will change gradually with a depth dimension. When the amount of swelling of the blanket 4 increases, as shown in FIG. 6, the blanket 4 contacts the bottom 17 of the recessed part 15 according to the depth dimension of the recessed part 15. As shown in FIG. Since the several recessed part 15 changed in steps is formed, as shown in FIG.5 (b), the printing state of the recessed part 15 of the depth dimension Emicrometer with the shallowest depth dimension is most remarkable. As the depth increases, the depth becomes triangular, and the faintness decreases. Therefore, the amount of swelling of the blanket 4 can be grasped step by step.

When the swelling control of the blanket 4 is normally performed in this way, the swelling of the blanket 4 is small, and the surface of the blanket 4 to which the ink 21 is applied is the bottom 17 of the recessed part 15. It becomes difficult to contact with and prints the recessed part 15 with a large depth dimension correctly. However, when the swelling control is neglected or the swelling control becomes impossible, the printing shape of the concave portion 15 having a large depth dimension is changed. Even if the swelling control is adjusted no matter how the printing state of the recessed part 15 with a large depth dimension changes, it is not possible to suppress the swelling of the blanket 4 and it can also be judged that it is the replacement time of the blanket 4. Thus, the degree of swelling of the blanket 4 can be recognized simply by looking at a printed matter.

As described above, in the present embodiment, the ink 21 is applied to the blanket 4 wound on the blanket body 5, and the blanket 4 rotates the printing plate 1 and the upper surface of the printed body in order. In this case, the excess ink 21 on the blanket 4 is removed from the convex portion 1a of the wire portion 16, and the offset printing in which the ink 21 remaining on the blanket 4 is transferred to the to-be-printed material is used. The printing plate 1 which provided the some recessed part 15 from which depth differs in the non-wire part 14 of 1) is used. When the blanket 4 is not newly swollen, the ink 21 applied to the surface of the blanket 4 does not contact the bottom 17 of the recessed part 15 of the non-fire line 14, The shape of the concave portion 15 is faithfully transferred to the non-fired portion 14 of the printed object. However, as the number of prints increases, when the solvent penetrates into the blanket 4 and the blanket 4 starts to swell, the surface of the blanket 4 gradually approaches the bottom 17 of the recess 15. In addition, when the swelling increases, the ink 21 applied to the surface of the blanket 4 contacts the bottom 17 of the recessed portion 15, and the recessed portion having a normal shape on the non-fired portion 14 of the printed object ( The shape based on 15) is not transferred. Thus, since the transfer shape of each recessed part 15 differs according to the swelling degree of the blanket 4, the recessed part 15 formed in the non-fired part 14 to what extent swelling of the blanket 4 advanced. ) Can be grasped at a glance based on the relationship between

Usually, the blanket 4 implements a swelling measure. By observing the state of the ink 21 transferred by the recessed portion 15 of the non-fired portion 14, the swelling measure of the blanket 4 functions normally. It can be grasped whether the amount of swelling of the blanket 4 is maintaining the state optimal for transcription | transfer. In addition, by observing the shape of the printed portion, it is possible to reinforce the swelling countermeasure or to accurately determine whether replacement is necessary in the life of the blanket 4.

Moreover, with the simple structure which forms the recessed part 15 in the non-fire line part 14, the swelling amount of the blanket 4, the alteration of the blanket 4, the change of the printing pressure by the swelling of the blanket 4, etc. Can be easily understood. Therefore, in order to understand the swelling amount of the blanket 4, the concave portion is formed in the non-fired portion 14 of the existing plate 1 by using the existing printing machine 2, without newly forming the measuring means in the printing machine 2. The present invention can be realized only by forming (15).

Moreover, in this embodiment, since each recessed part 15 is each formed in each edge part, when only one edge part prints worse, when the printing state of any one edge part is favorable, the pressing force of a blanket is biased. It can grasp | ascertain by the printing state of the ink 21.

In addition, in this embodiment, although the non-marked part 14 of the board | substrate 1 is equipped with some alignment mark (not shown) for position shift correction, it is comprised so that the recessed part 15 mentioned above may also function as an alignment mark. You may also Therefore, since the swelling amount of the blanket 4 can be managed using an alignment mark, and it is not necessary to form the recessed part 15 in the non-fire line part 14 newly, the cost for implementing this invention easily is reduced. You can.

In addition, in this embodiment, when the swelling amount of the blanket 4 is appropriate, even if the recessed part 15 with the smallest depth dimension is clear in a printing state, it is not limited to this, When the swelling amount of the blanket 4 is suitable In the recessed part 15 with a small depth dimension, you may set a depth dimension so that a printing state may be forcibly faded. By setting the minimum value of the depth dimension in this way and increasing the depth dimension step by step, it can be grasped as the printing state of the recessed part 15 with a small depth dimension whether it is the appropriate amount of swelling of the blanket 4.

Next, a second embodiment of the present invention will be described. FIG. 7: is a front view which shows the printing plate 1A of 2nd Embodiment. In this embodiment, the recessed part 15 formed in the non-fired part 14 of 1 A of printing plates has the feature that the depth dimension is mutually the same. As shown in FIG. 7, a pair of concave portions 15 having opposing triangular shapes are formed in each side portion, respectively. The depth dimension of each recessed part 15 is set so that a printing state may become unclear when the blanket 4 becomes more than the amount of swelling predetermined, for example. By setting it to such a depth dimension, it can be determined whether the swelling amount of the blanket 4 exceeds the predetermined amount based on the printing state of the ink 21. Therefore, by setting the predetermined amount of swelling of the blanket 4 before the printing of the wire line 16 becomes unclear, it is necessary to control the amount of swelling of the blanket 4 based on the printing state of the recess 15. The timing can be judged appropriately. Moreover, since each edge 18 inclines with respect to a printing direction, each recessed part 15 has the part from which the dimension of the width direction of the recessed part 15 differs with respect to a printing direction. Therefore, the swelling amount of the blanket 4 can be grasped | ascertained step by step by observing the printing state of each recessed part 15 over a printing direction. Thereby, the swelling amount of the blanket 4 can be grasped | ascertained more accurately.

Next, a third embodiment of the present invention will be described. 8 is a front view illustrating an example of the printing plate 1B of the third embodiment. In this embodiment, the recessed part 15 formed in the non-fire line part 14 of the printing plate 1B extends along a printing direction, and is made into the point where the change rate of the width dimension of the recessed part 15 with respect to a printing direction is constant. Has characteristics. As shown in FIG. 8, the isosceles triangular recessed part 15 is formed in each short side part 19, respectively. Each recessed part 15 is formed so that the position of a bottom side may mutually differ. In other words, the directions in which the concave portions 15 of the isosceles triangles extend are different from each other. Each recessed part 15 has a dimension of the bottom side of 2 mm, for example, and a depth dimension is set to 50 micrometers. Thus, each recessed part 15 extends over the x direction of the short side part 19 of the non-wire part 14, and is formed so that the edge 18 may change gently with respect to a printing direction. Therefore, the dimension of the width direction of the recessed part 15 changes gently over a printing direction. As mentioned above, the swelling of the blanket 4 is observed by observing the dimension of the width direction of the recessed part 15, and the state of the ink 21 printed on the non-fired part 14 based on the recessed part 15. As shown in FIG. Since the quantity can be grasped | ascertained in detail, this embodiment which made the dimensional change of the width direction of the recessed part 15 smoothly over the printing direction can grasp the swelling amount of the blanket 4 in more detail.

9 is a front view showing another example of the printing plate 1B of the present embodiment. As shown in FIG. 9, two or more recessed parts 15 similar to FIG. 8 are formed in one short side part 19 in this embodiment.

The directions in which the concave portions 15 of the adjacent isosceles triangles extend are different from each other, and the area of the non-fire line portion 14 is effectively used. Even if it is such a structure, the effect | action and effect of this embodiment can be achieved using the area | region of the non-fired part 14 effectively.

In addition, in this embodiment, although the depth dimension of each recessed part 15 is the same, you may form differently from each other. Thereby, the swelling amount of the blanket 4 can be grasped | ascertained in detail based on the relationship of the depth dimension of the recessed part 15, and the width dimension.

In each embodiment mentioned above, although the shape for grasping the printing state is selected, the shape of the recessed part 15 is not limited to this shape. For example, when the depth dimension differs from each other, the shape of the recessed part 15 may be a shape which can be easily judged by the case where the magnitude relationship of the depth dimension of the recessed part 15 recognizes a printing state. If the recessed part 15 is such a shape, it can be grasped | ascertained only by confirming a printing state that the depth dimension of which recessed part 15 is large.

Such recess 15 may be, for example, a letter indicating a depth dimension or a symbol such as an inequality sign indicating a magnitude relationship.

1 is a front view showing the printing plate 1 of the first embodiment of the present invention.

FIG. 2 is a diagram showing a printing machine 2 which prints using the printing plate 1.

3 is an enlarged view of the non-fire line portion 14 near the long side of the printing plate 1.

FIG. 4 is a cross-sectional view showing the manufacturing method of the color filter using the printing plate 1 step by step, and FIG. 4 (a) shows the blanket 4 with the organic colorant 21, which is the ink 21, on the coater head 13. 4B shows a state in which the organic colorant 21 is partially attached to the convex portion 1a of the plate 1 and removed from the surface of the blanket 4. 4C is a cross-sectional view showing the state of transferring the organic colorant 21 remaining on the surface of the blanket 4 to the surface of the substrate 22.

FIG. 5 is a diagram showing an example of the ink 21 printed on the non-drawing portion 14.

6 is a diagram illustrating a state where the blanket 4 is in contact with the recessed portion 15.

7 is a front view illustrating the printing plate 1A of the second embodiment.

8 is a front view illustrating an example of the printing plate 1B of the third embodiment.

9 is a front view showing another example of the printing plate 1B of the present embodiment.

* Description of the symbols for the main parts of the drawings *

1: printing plate

2: printing press

3: printing machine body

4: blanket

5: blanket fuselage

14: non-fired part

15: recess

16: caustics

17: floor

Claims (3)

The printing plate in which the recessed part which manages swelling of a blanket is formed in the non-wire line part. The method of claim 1, The said recessed part is a printing plate in which the depth dimension is formed in plurality in different steps. The method according to claim 1 or 2, The said recessed part is a printing plate in which the dimension of the width direction orthogonal to the printing direction in which a blanket prints a to-be-printed body differs from each other over a printing direction.

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