TW200924981A - Printing device and printing method - Google Patents

Abstract

This invention relates to a printing device, including a solvent adsorption body 6 used to adsorb and remove the solvent of a blanket 2, and a solvent adsorbing and removing unit used to remove the solvent stored in the solvent adsorption body 6. The solvent adsorption body 6 adsorbs the ink solvent penetrating into the blanket 2 by means of contacting with the outer circumferential surface of the blanket 2. During a printing process, the solvent adsorbed in the solvent adsorption body 6 is adsorbed and removed in a non-contact state by means of an adsorption nozzle 14, which is arranged opposite to the solvent adsorption body 6 and serves as a solvent adsorbing and removing unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus and a printing method. In detail, the present invention relates to a printing apparatus suitable for high-precision printing such as offset printing and reverse printing. Printing method. [Prior Art]

In recent years, in order to meet the demand for large-scale and low-cost display devices, a pattern of a color filter layer or the like in a plasma display panel (PDP) in which a liquid crystal color filter is formed by printing has been proposed. A scheme of a pattern of silver electrodes or the like. Further, these patterns are fine patterns and are required to have excellent printing precision, and thus the application of gravure offset printing using a ketone rubber blanket has been studied. However, the electrode substrate of the liquid crystal filter or the PDP is a substrate that does not absorb the ink solvent such as glass. Therefore, in the process of repeating the printing process on a plurality of substrates, the ink solvent permeates and accumulates in the rubber cloth to swell the rubber cloth. Further, there is a case where the transfer of the ink is poor or the dimensional accuracy of the pattern is lowered, and the defective product is increased. Therefore, as a technique for removing the ink solvent soaked and accumulated in the rubber cloth from the rubber cloth, a solvent absorbing mechanism for rotating the cloth and the solvent absorbing body in contact with each other has been proposed. Patent Reading 2 proposes a mechanism for adjusting the level of rubber cloth to a wet state according to the ink solvent. Further, Patent Document 3 discloses that the following refilling agent is wound around a roll, and it is in contact with a part of the peripheral surface of the rubber cloth, thereby taking the ink solvent from the rubber cloth ( The fluorenone rubber layer of the transfer roller was transferred to the solvent absorber (refer to Fig. 3). Patent Document 4 describes a printing apparatus in which a solvent absorbent formed in an endless belt shape or a roll shape is brought into contact with a surface of a rubber cloth to absorb an ink solvent from a rubber layer on the surface of the rubber cloth (see FIG. 1). . Further, in the invention described in Patent Document 4, a heater that heats a solvent absorber and evaporates a solvent is described as a solvent removal mechanism that removes a solvent from the solvent absorber (see FIG. (a) and Figure 1 (b)). Patent Document 1: JP-A-2000-158633 (Patent Document 2) JP-A-2000-158620 (Patent Document 3) JP-A-H08-156388 (Patent Document 4) JP-A-2006-035769 In the invention described in the above-mentioned documents, the solvent absorption mechanism (the solvent absorber, the moisture absorption sheet, or the solvent absorber) is repeatedly transferred from the rubber cloth, and the ink solvent is impregnated and accumulated in the solvent absorption mechanism. Further, the solvent absorption mechanism is saturated with the ink solvent. In order to eliminate the suction effect, as the ink solvent is saturated, for example, the solvent absorbing mechanism may be replaced, but in this case, the productivity of printing is lowered and the cost is increased. Therefore, as in Patent Document 4, it is considered to evaporate the solvent by heating the solvent absorber, but for the ink used to form the color filter layer of the liquid crystal filter, a higher boiling point (200 to 280. (left and right)) is generally used. In order to evaporate the alcohol ester by heating the glycol, the heating temperature must be set to be extremely high. 200924981 Moreover, it is required to print extremely fine with extremely high precision as in the above-mentioned color layer. When the printing device is placed in a clean room towel, strict temperature management is carried out in a very narrow temperature range. Therefore, when the solvent absorber is heated by the heater, the temperature management in the clean room is extremely risky. SUMMARY OF THE INVENTION An object of the present invention is to provide a printing apparatus and a printing method capable of efficiently removing a solvent accumulated in the solvent absorber from a solvent solution for sucking and removing an ink solvent of a rubber cloth. In order to achieve the above object, the i-th printing apparatus of the present invention is characterized in that it is provided with an ink for transferring the ink to be printed on the surface. a rubber sheet, a blanket cylinder for fixing the rubber sheet on a surface, a solvent absorber for sucking ink solvent infiltrated into the rubber cloth by contact with an outer peripheral surface of the rubber cloth, And a solvent absorbing mechanism for sucking the ink sucked by the solvent absorber from the absorbing absorbent body and not contacting the solvent absorber. μ For the first printing device, 'solvent removal by solvent The mechanism absorbs the ink solvent of the solvent absorber from the solvent without being absorbed by the solvent, and is removed from the solvent absorber. Therefore, the first printing device described above can be prevented from being used with The surface of the solvent-removing member is damaged or deteriorated by contact with the solvent-removing member. Moreover, there is no need for heat treatment for removing the ink-dissolving (four) towel, thereby preventing temperature management of the printing device. In the first printing position of the present invention, it is preferable that the solvent suction mechanism is 7 200924981 (1) spaced apart from the surface of the solvent absorber by a predetermined interval and with the solvent absorber pair. To the configured suction nozzle, or (2) a vacuum chamber for covering and sealing the solvent absorber. When the solvent suction mechanism is the suction nozzle of the above (1), it can be simple The structure removes the solvent sucked from the rubber cloth to the solvent absorber from the solvent absorber. On the other hand, when the solvent suction mechanism is the vacuum chamber of the above (2),

The solvent sucked from the rubber cloth to the solvent absorber can be efficiently sucked and removed from the entire solvent absorbent body. Therefore, in any of the above (1) or (2), the ink solvent accumulated in the solvent absorber can be efficiently removed. In order to achieve the above object, the second embodiment of the present invention is characterized in that the brush 2 is provided with a rubber cloth for supporting the ink to be transferred onto the object to be printed on the surface, and the rubber cloth is fixed on the surface. a blanket cylinder; a solvent absorber for sucking ink solvent penetrating into the fabric by contact with an outer peripheral surface of the rubber cloth; and for heating the solvent absorber to be absorbed by the solvent The heating mechanism that the body sucks the ink solvent to evaporate and '(4) dissolves the ship (4) with a cold end belt of the outer surface of the rubber cloth, a county erected and supported roller, and a cooler that cools the miscellaneous belt. More microstrips In addition, the cooler can be mounted on multiple rollers. In the second printing device of the above-mentioned second printing device, the heating by the "heating mechanism" is "can be removed from the absorption", and can be set by

Ο 200924981

The cooler of the absorber i cools the heated endless belt. Therefore, with the second apparatus described above, the ink solvent can be removed from the solvent absorber by heating. In addition, the excessive burden caused by the temperature management of the cold portion "_加_魏胄树印刷装置" is prevented. The first method of using the present invention is to provide the following steps: The ink-loading process, the printing process of the ink-printed on the surface of the rubber cloth, the printing process on the printing plate, and the ink absorption of the rubber-coated towel by the solvent absorption body a step of extracting a solvent by a solvent that is absorbed by the solvent absorber in a non-contact state by a light-hearted mechanism. The first printing method can be performed by the solvent extraction step. The solvent aspirating mechanism sucks the solvent sucked from the rubber cloth to the solvent suction (4) in a state of suction (four) miscible with the solvent, thereby being removed from the solvent absorber. Therefore, according to the above-described third printing method, it can be prevented from being used with The deterioration of the surface of the solvent absorber caused by the contact of the solvent-dissolving member is removed. Further, heat treatment for removing the solvent from the solvent absorber is not required, whereby the printing can be prevented. The second printing method of the present invention is a printing method using the second printing apparatus of the present invention, and is characterized in that the ink is carried on the surface of the rubber cloth. a supporting step, a printing step of printing the ink carried on the surface of the rubber sheet onto the object to be printed, and a solvent-based process of absorbing the ink solvent in the rubber cloth by the solvent absorption 9 200924981 And a solvent evaporating and removing step of evaporating and removing the solvent absorbed in the solvent absorber by the means, and a cooling step of cooling the agent absorber after the solvent burst removal step. In the second printing method described above, # is extracted by the solvent extraction step 'heating means to evaporate the ink solvent of the endless belt which is a solvent absorber from the rubber (4), and _ from the solvent absorber

Remove, and can cool the heated endless belt by a cooler disposed on the vessel. Therefore, in the second printing method described above, the solvent (4) solvent can be removed from the solvent absorber by a method of heating and heating. Further, the heated annular band is quickly cooled by the cooler (4), whereby an excessive load on the temperature management of the printing apparatus can be prevented. According to the printing and printing method of the present invention, the immersion and accumulation of the lysate (4) on the lyophilized ship (four) is efficiently removed from the absorbing/dissolving (four) towel for sucking and removing the rubber cloth. Further, it is thereby possible to prevent the productivity of printing due to the exchange of the solvent absorber from being lowered and the cost to be increased. Such a hair-printing and printing method is suitable for use in high-precision printing such as offset printing, reverse printing, and the like, particularly in the formation of a silver electrode of a color layer 'PDP of a liquid crystal color filter. The above and other objects, features and advantages of the present invention will become more <RTIgt; [Embodiment] Hereinafter, an embodiment of a printing apparatus of the present invention will be described in detail with reference to the accompanying drawings. In the various embodiments, the same or equivalent components are denoted by the same reference numerals, and the description thereof will be omitted in the embodiments described later. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the configuration of a device according to an embodiment of a printing apparatus of the present invention. In the printing apparatus 1, the printing apparatus 1 is provided with a rubber cloth 2, a blanket cylinder 3 that fixes the rubber sheet 2 on the surface, a gravure 4 as a printing plate, and a substrate 5 as a to-be-printed body, which are in contact with the outer peripheral surface of the blanket 2 The solvent absorber 6 that sucks the ink solvent and the second solvent aspirating mechanism 7 that sucks and removes the ink solvent from the solvent absorber 6 in a non-contact state. The blanket 2 has a support film layer and a surface print layer covering the outer periphery of the support film layer. As the surface printing layer, for example, an anthrone rubber, an acrylonitrile butadiene (NBR), an ethylene-propylene-diene copolymer rubber (EpDM), or the like can be used. Among them, for example, an anthrone rubber is preferably used in high-precision printing applications, and an anthrone rubber having a SHORE A hardness of 20 to 70 is more preferably used. The thickness of the surface printing layer is, for example, 50 to 5000 μm, preferably 100 to 2000 μm, and the surface roughness is, in terms of arithmetic mean roughness Ra, for example, 〇1 to 1 μm, preferably 0.01 to 0.5 μm. As the support film layer, for example, a resin film such as a polyester film can be used. The thickness of the support film layer is, for example, 20 to ΙΟΟΟμm, preferably 50 to 500 μm. Further, the total thickness of the surface printed layer and the support film layer of the rubber sheet 2 is, for example, 100 to 6000 μm, preferably 200 to 2,500 jum. The blanket 2 is wound around the surface of the cylindrical blanket cylinder 3 to form a cylindrical shape that can rotate with the blanket cylinder 3. Ο

The blanket cylinder 3 uses, for example, a metal roller or the like. The blanket cylinder 3 is maintained in such a manner as to be freely rotatable and free to move in parallel in a direction perpendicular to the line direction of the blanket cylinder 3. Specifically, the blanket cylinder 3 is rotatably held on the intaglio plate 4 and the substrate 5 while the outer peripheral surface of the rubber sheet 2 fixed to the surface is brought into contact with the intaglio plate 4 and the substrate 5 which will be described later. The outer surface of the blanket 2 in a state of being wound around the blanket cylinder 3 is appropriately selected in the area of the root-and-brush area. Further, in the printing region of the blanket 2, for example, in the circumferential direction thereof, it is possible to selectively remove all the regions which are inserted into the groove portion of the blanket cylinder 3 and the vicinity of the vicinity of the groove portion. In this case, the rubber cloth can be made, for example, into a cylindrical rubber cloth, and f 2 is the same as the surface formed on the outer circumferential surface of the cylindrical sleeve: skin;:::===== brush 鳢 = = two = with: will be transferred to the printed r on the rubber, on = in the above ink carrying process, touch '-edge by rotating the adhesive on the intaglio 4 12 200924981 the ink filled in the recess is transferred to The outer peripheral surface of the rubber sheet 2. Thus, an ink pattern corresponding to the printing sheet is formed on the outer peripheral surface of the rubber sheet 2. The intaglio plate 4 has a concave portion corresponding to the printing pattern. The intaglio plate 4 may be made of glass such as soda lime glass. The plate is, for example, a metal (invar alloy material) plate, etc. Further, the printing plate is not limited to the intaglio plate 4 shown in the drawings, and various printing plates such as a relief plate or a lithographic plate can be used, for example, and the substrate 5 is not particularly limited 'according to the purpose of printing The ink is not particularly limited, and various inks can be used depending on the purpose and use of the printing. For example, when forming a color filter layer and a black matrix of a liquid crystal color filter, 'containing a resin, a solvent, a pigment, and further Need to contain The solvent of the knife powder, the extender pigment, the curing catalyst, the leveling agent (surface tension modifier), etc. has a boiling point of 70 to 300 ° C, preferably at 23 ° C. The surface printing layer of the rubber cloth 2 is impregnated in the ink 24 The ink having a swelling ratio of the surface printed layer of 5 to 100% at the time of the hour. For the ink, for example, a polyester-melamine tree, an epoxy-melamine resin, an acrylic resin, or the like is used as the resin. Further, the resin is reset. The average molecular weight can be appropriately selected depending on the physical properties such as the viscosity of the ink and the thixotropy. However, when it is converted into a standard polystyrene value obtained by the GPC method, it is preferably from 1,000 to 30,000, more preferably from 5 to 25,000. Preferably, the boiling point of the solvent is 70 to 200. (In particular, the solvent having a boiling point of 70 to 200 C can be, for example, an alcohol (more preferably a higher alcohol), an ethylene glycol, an ethyl alcohol vinegar, an alkyl ether. Classes, aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, carboxylic acid esters, etc. 13 200924981 In the formation of the enamel layer of the liquid crystal color filter, the pigment can be, for example, a red pigment of onion, a halogenated phthalocyanine blue. Green color It is possible to make yellow pigments, purple pigments, etc. as auxiliary particles. In addition, when forming a black matrix of liquid crystal filters, for example, carbon black, iron oxide (iron black), titanium black can be used. , the combination of iron sulfate, Fe_co-M〇, etc., etc. The average primary particle diameter of the pigment is preferably 1 to ΙΟΟηη^ ° ° The above swelling ratio is related to the surface printing layer of the rubber cloth 2

An indicator of the rate of absorption of the agent and the degree of elasticity of the ink. When the swelling ratio is within the above range: it is preferably 10 to 50%, more preferably 10 to 30%. Further, the ink may be mixed by mixing, for example, the above-mentioned resin, solvent, pigment, etc., various mixers, kneaders, grinders, etc., and a so-called reverse printing method may be employed in the ink carrying step. In this case, for example, the ink is applied to the entire surface of the printing region in the outer circumferential surface of the blanket 2, and then the portion of the embossed plate is brought into contact with the convex portion of the embossed plate. The ink is transferred to the convex portion and removed from the outer peripheral surface of the rubber cloth 2. In addition, in the case where the convex portion of the embossed plate is formed, the reversed pattern after the printing pattern is reversed, and the surface of the rubber sheet 2 is formed on the outer peripheral surface of the rubber sheet 2 in accordance with the printing pattern in the printing step. The rubber sheet 2 transferred from the intaglio 4 pattern is brought into contact with the substrate 5, and the ink sheet is transferred to the surface sheet of the substrate 5 by the rotation 'printing on the second sheet 5 to form an ink pattern. In the first embodiment, the solvent absorber 6 is a member in which a long sheet having a solvent absorption layer (not shown) is formed into an endless belt shape on at least the surface on the side in contact with the outer peripheral surface of the blanket 2 . The layer structure ' of the solvent absorber 6 is exemplified by a laminate formed of a solvent absorbing layer 8 and a substrate 9 for fixing the solvent absorbing layer 8 (see (a) of FIG. 2); a laminate in which the absorbent layer 8, the substrate 9, and the elastic layer 1 are laminated in this order (see (b) of FIG. 2); laminated in the order of the solvent absorbing layer 8, the elastic layer 1 〇, and the substrate 9. The resulting laminate (see (c) of Fig. 2). The layer structure of the solvent absorber 6 is not particularly limited, but a laminate having a two-layer structure as shown in Fig. 2(a) is preferable from the viewpoint of simple structure. Further, 'the three-layer structure having the elastic layer 10 as shown in (b) of FIG. 2 and (c) of FIG. 2 can be suitably employed depending on the kind of the ink solvent, the material for forming the surface printing layer of the rubber cloth 2, and the like. Laminate. The solvent absorbing layer 8 is in contact with the outer peripheral surface of the blanket 2, and sucks the ink solvent from the surface print layer of the blanket 2. As the solvent absorbing layer 8, for example, an anthrone rubber, a urethane resin, a urethane elastomer, natural rubber, NBR, butadiene rubber (BR), EPDM or the like can be used. These may be appropriately selected from the viewpoints of affinity for the ink solvent, etc., and among them, a urethane resin is preferably used. The surface roughness of the solvent absorbing layer 8 is not particularly limited. From the viewpoint of preventing the sweat from adhering to the outer peripheral surface of the rubber woven fabric 2, for example, the arithmetic flatness Ra is, for example, Ιμηη or less, preferably 〇. Further, 15 200924981 The thickness of the solvent absorbing layer 8 is not particularly limited, but the thickness of the solvent absorbing layer 8 is, for example, 100 to 2000 μm from the viewpoint of sufficient strength and an absorption capacity of the ink solvent for ensuring the solvent absorbing layer 8. 300~1500μιη. As the substrate 9, for example, a resin film formed of polyester (especially pet or the like), a quinone-based resin, an acrylic resin or the like can be used. Thickness of the substrate 9 From the viewpoints of workability, mechanical strength, flexibility, and the like of the solvent absorber 6, for example, 疋50 to 500 μm η is preferably 6 〇 to 250 μm. The surface roughness of the substrate 9 is not particularly limited. However, from the viewpoint of ensuring the smoothness of the solvent absorbing layer 1 等, etc., the arithmetic mean sag Ra is, for example, 3 〇 to 2 〇〇〇 nm, preferably 50. ~l〇〇〇nm. Further, the tensile modulus of the mechanical strength of the substrate 9 at a draw ratio of 2% is, for example, 70 to 500 MPa, preferably 1 to 500 MPa. As the elastic layer 10, for example, a solid rubber, a foamed rubber, a soft rubber or the like can be used, and a soft urethane resin or the like is preferably used. The thickness of the elastic layer 15 is, for example, 〇·1 to 5 mm', preferably 〇2 to 2 mm. Further, the mechanical strength of the elastic layer 15 is, for example, 0.5 to 20 MPa, preferably 1.0 to 10 MPa, in terms of the compression modulus at which it is compressed by 1%. Further, the total thickness of the solvent absorber 6 is not particularly limited, but is preferably 疋200 to 100 pm. Further, 'the belt-shaped solvent absorber 6 in FIG. 1 is placed between three rollers arranged in parallel with the axis of rotation of the blanket cylinder 3, that is, erected on a pair of rollers 11, 12 and a tension roller. Between 13 The pair of rollers 11 and 12 are disposed to be movable in parallel with respect to the blanket cylinder 3 in order to obtain the following two states, that is, the separated state in which the outer peripheral surfaces of the blanket 2 are spaced apart from each other ( In the state shown in FIG. 1, the state shown in FIG. 1 and the outer peripheral surface of the rubber sheet 2, the state in which the glass is replaced with the body 6 and the abutting body 6 is in contact with each other. In the early stage, the pair of rollers 11 and 12 can be disposed with respect to the blanket cylinder 3. The 'tensioning rod' is biased in the direction of the biasing force U'12 (not shown), thereby giving the pros 11 The solvent absorber 6 is placed between 12 and 13, and a predetermined tension is applied. ❹ ❹ * In the above-mentioned abutment state, the body 6 between the pair of rollers U and 12 passes the tension applied by the tensioning member 13 to The pressure contact force of = is pressed against the outer peripheral surface of the rubber cloth 2 = lower '= 6 while the rubber drum 3 rotates, the red ink is sucked into the rubber solvent in the rubber cloth 2 by the rotation of the blanket cylinder. Printing method, with solvent absorption ===aki 2 butterfly pure rubber cloth removed in the solvent extraction process, a slant (the state shown by the broken line in Fig. 1) The abutting roller 3 of the upper and lower sides is rotated, and the rubber absorbent body 6 is rotated in conjunction with the surface of the roller 3 according to the surface thereof. Rotating so that the solvent can be absorbed by the solvent absorber 6. The ink solvent sucking process incorporated into the rubber cloth 2 can be, for example, a series of printing in each order and printing process;: Under: ink carrying work When the above-mentioned series-printing process is performed a plurality of times, $* can be infiltrated into the rubber cloth 2 according to the ink solvent at each frequency: the process of 17 φ ❹ 200924981 can be selected. The ink solvent penetrates into the rubber cloth 2, and the shape of the ink pattern printed on the substrate 5 (for example, a flat or a three-dimensional shape such as a thickness or a cross-sectional shape) is measured by an imaging mechanism (for example, a CCD camera mechanism). The judgment is made based on the change of the slug shape over time. In addition, the tension applied to the rubber cloth when the solvent absorber 6 is in the above-mentioned abutting state, the time of the rubber cloth 2 and the solvent absorber 6 In other words, it is sufficient to appropriately set the ink solvent to the extent of the rubber cloth 2 and to absorb the solvent from the cloth 2. Further, for example, an anthrone rubber cloth is used, and a higher boiling point (2〇〇~28) When the ethylene glycol vinegar is used as a solvent ink to print the color filter layer of the liquid crystal filter, 'in view of the fineness of the printed ink pattern and the extremely high printing degree, the degree is, for example, 10 times per time. The solvent extraction process is carried out in a series of printing processes. Preferably, the solvent extraction process is carried out once every time, and the solvent extraction process is carried out when the mother performs the above-mentioned printing process. In the case of the rubber cloth 2, the tension applied to the rubber cloth 2 is, for example, preferably 10 to 30 kN. Further, the contact time of the rubber cloth 2 and the solvent absorber 6 is, for example, 1 〇 to 5 〇 seconds, preferably 15 to 3 〇 seconds. It is preferable that the pair of rolls 11 and 12 are disposed at intervals in the circumferential direction of the blanket 2 as much as possible. In this case, the contact area between the outer peripheral surface of the blanket 2 and the surface of the solvent absorber 6 is increased. The efficiency of sucking the ink solvent from the rubber sheet is improved. In Fig. 1, the first solvent suction mechanism 7 is provided with a suction nozzle 14 which is disposed at an interval from the surface of the solvent absorber 6 and disposed opposite to the solvent absorber 6. 18 200924981 The suction nozzle 14 is disposed to face the surface of the solvent absorber 6. The suction nozzle 14 has an elongated rectangular shape along the axial direction of each of the rollers 11 to 13 supporting the solvent absorber 6. A slit nozzle is connected, and a vacuum pump (not shown) is connected to the pumping nozzle 14. The printing method using the printing apparatus 1 described above does not require the first solvent suction mechanism 7 (suction nozzle 14) and the solvent to be absorbed. a solvent capable of absorbing solvent from the solvent absorber 6 when the body 6 is in contact In the solvent absorption step, first, the pair of rolls 11 and 12 supporting the solvent absorber 6 are placed in the above-described separated state (the state shown by the solid line in Fig. 1). Then, the solvent is absorbed. The body is rotated between the pair of rollers 11, 12 and one tension roller 13, and the vicinity of the surface of the solvent absorber 6 is sucked by the suction nozzle 14. Thereby, the vicinity of the surface of the solvent absorber 6 becomes a negative pressure, and the solvent The ink solvent in the absorber 6 is sucked and removed from the solvent absorber 6. The suction nozzle 14 follows the viewpoint of increasing the degree of vacuum in the vicinity of the surface of the solvent absorber 6 and efficiently sucking the ink solvent. The opening width (transverse opening width) in the axial direction of each of the rolls u to 13 被 is set to be the same width as the axial length of the solvent absorber 6, and the slit interval (longitudinal opening width) in the rotational direction of the solvent absorber 6 is set. For example, it is set to 3 to ΙΟΟΟμιη ' preferably set to 30 to 300 μm. Further, from the same viewpoint, the interval between the surface of the solvent absorber 6 and the opening of the suction nozzle 14 is set to, for example, 10 to 150 μm, preferably 30 to 10 μm. Further, when the slit interval (longitudinal opening width) is larger than the above range, the suction area can be increased, but the suction degree is lowered. In addition, when 200924981 = seam, the partition (longitudinal opening width) is lower than the above range, although the suction degree: the area of the suction is very narrow, and the suction per unit area becomes excessive, and it is possible This will reduce the efficiency of solvent absorption. Further, from the viewpoint of improving the solvent suction efficiency, the separation between the surface of the solvent absorber 6 and the opening of the suction nozzle 14 is preferably as narrow as possible, but on the other hand, when it is lower than the above range, the solvent is absorbed. The body is in contact with the suction nozzle 14, which may damage the solvent absorber 6.

Further, in the solvent abatement step, the moving speed of the solvent absorber 6 is, for example, 疋5 to 60 mm/s', preferably 10 to 4 mm/s. This moving speed can be adjusted by controlling the rotational speed of the engine connected to the tension roller 13. Further, the time for performing the suction treatment using the suction nozzle 14 is, for example, 1 to 50 seconds, preferably 5 to 30 seconds. The solvent aspirating step is repeated, and a large amount of solvent is infiltrated into the solvent absorber 6 'when saturated', the solvent absorber 6 can no longer absorb the solvent 'but the solvent aspirating step' can suppress the pair of the solvent absorber 6 from the rubber cloth The effect of the suction treatment of the ink solvent of 2 is lowered over time. Further, for example, the above-described series of printing treatments are carried out using an ink having a higher boiling point (200 to 280 (about:)) of a glycol ester as a solvent, as a solvent absorber 6' for sucking a solvent derived from a rubber cloth. When the solvent absorbing layer 8 is formed of a urethane resin, the solvent absorbing step is repeated for about 30 to 100 times, which is approximately 50 times. The solvent absorber 6 is saturated. The solvent absorbing mechanism 7 may be provided with a suction nozzle 14 and, for example, a gas nozzle 15 and an ultrasonic vibrator 16. 20 200924981 The gas nozzle 15 may be, for example, upstream of the nozzle M in the rotational direction of the solvent absorber 6. 15 injecting gas into the solvent absorber 6, by sucking with a suction nozzle, = increasing the efficiency of the solvent from the solvent body 6 by b. ❹ ❹ according to the suction nozzle 14 (4) From the viewpoint of the ship (4) 6 extinguishing the south, the gas nozzle 15 is set along the axis of the above-mentioned respective reports u to 13 = = width (transverse opening π width) is set to the same width as the solvent suction, the second line = Cheng, along the solvent absorber The direction of rotation of 6 == B. (longitudinal opening The width is, for example, set to 5 to 7000 μm, preferably = 20 to 5, and the interval between the surface of the solvent absorber 6 and the opening σ of the gas nozzle 15 is set, for example, from the same viewpoint. It is preferably set to 30 to 1 〇〇μΠι 10 to 150 qing. Further, when the slit interval (longitudinal opening width) of the gas nozzle 15 is in the above range, the carrier body is easily diffused to the solvent WE 6 : In the case b, it is difficult to obtain the effect of improving the solvent suction efficiency of the suction nozzle 14. Further, when the slit interval (longitudinal opening width) is lower than the above range, 'the area of the blowing gas is very narrow, so it may be difficult to obtain The effect of improving the solvent absorption efficiency of the suction nozzle 14. Further, the 'interval of the surface of the smear absorber 6 and the opening of the gas nozzle 15' is improved from the viewpoint of improving the solvent suction efficiency of the suction nozzle 14. Alternatively, when it is lower than the above range, the contact of the solvent absorbing body 6 and the gas nozzle 15 may cause the solvent absorber 6 to be forked: to the damage. The ultrasonic vibrator 16 is absorbed by, for example, a solvent. Body 6, Placed in the position opposite to the suction 21 ❹ ❹ 200924981 mouth 14 or the direction of rotation of the body 6 in the opposite position to the solvent absorbing solvent absorber 6 thief; migration. - from the ultrasonic vibrator 16 For the suction, the efficiency of pumping the solvent by the ultrasonic vibration of the two-agent absorber 6 by the suction nozzle 14 can be further advanced. It is possible to add the ultrasonic waves of various ultrasonic roots == such as (4) The vibrator ' can be set, for example, to the second type to be appropriately selected, and the other is to be in close contact with the back surface of the solvent carcass 6. This is a solvent absorption when the solvent is absorbed by the solvent (four) 6 The acoustic vibration of the body 6 is 5 to 30 mm/s. For example, when the printing apparatus i performs the above-described printing method = the suction of the ink-retaining agent from the rubber cloth 2 = the case where the printing is performed, the movement degree can be high-precision printing. The printed figure 3 is a device configuration showing another embodiment of the printing apparatus of the present invention. In Fig. 3, the printing device 17 includes a rubber roller 2, a blanket cylinder 3 that fixes the rubber sheet 2 on the surface, and a substrate 5 that is a printing target, which is a substrate to be printed, and is in contact with the outer peripheral surface of the rubber sheet 2. Further, the solvent absorber 6 of the ink solvent is sucked, and the chamber 18 as the second solvent sucking means that sucks the ink solvent from the absorber 6 in a non-contact state. Further, the rubber cloth 2, the blanket cylinder 3, the intaglio plate, the substrate 5, and the 22,2009,981 solvent-absorbing body 6 have the same structure as the above embodiment. Ο

The vacuum chamber 18 is a member for providing an internal space maintained in a state of being decompressed and having a high degree of vacuum. Referring to Fig. 3, Fig. 4(a) and Fig. 4(b), the vacuum chamber 18 is provided with a triangular prism which is surrounded by a state in which the solvent absorber 6 is placed on each of the rolls u, 12, and 13 The sheath portion 19 and the lid portion 20 for sealing and sealing the open end of the sheath portion 19. Further, the flange portion 21 of the j-port end of the sheath portion 19 is provided with a seal 22 for improving the adhesion to the lid portion 2, and a solvent absorber 6 which is slidably defined inside is provided inside the sheath portion 19. The accommodating department. On the other hand, referring to Fig. 3 and Fig. 3, the lid portion 20 is provided with a suction cylinder portion 24, and the opening end on the side of the lid portion 2 on the side of the suction cylinder portion communicates with the accommodating portion of the sheath portion 19. Further, the suction cylinder portion 24 is connected to a vacuum pump (not shown) outside the vacuum chamber 18. Further, the sheath portion 19 of the vacuum chamber 18 is fixed to the slide type cylinder 25. The steam red 25 can be parallelly moved in the direction of the axis of the light u~i3 supporting the solvent absorber 6, _19 of the vacuum chamber Μ. Thus, the agent-absorbent body 6 can be given two (four) as follows: in a state of being placed in each of the sticks u, in a vacuum suction state in the above-described housing portion (a state in which the figure is not shown), and the above-mentioned housing portion pair-absorbent body The rest state of the vacuum suction process of 6 (the state shown by the solid line in FIG. 3). The printing method of the crucible includes: a step of removing the solvent and removing the solvent in a non-contact state. 'The second solvent absorbing mechanism for printing according to the embodiment is used in accordance with the covering solvent absorber 6. (The ink solvent sucked in the vacuum chamber absorber 6 is sucked in the solvent absorbing step, first 23 200924981 胄The working chamber 18 is disposed in the vacuum suction state described above. The sheath portion 19 and the lid portion 2 of the vacuum chamber 18 are attached to the flange portion 21 of the flange portion 19 to obtain a seal. Then, the vacuum chambers (not shown) of the suction cylinder portion 24 are sucked into the valleys of the vacuum chamber 18, and the inside of the housing portion of the vacuum chamber 18 becomes a negative pressure, solvent. The solvent in the absorber 6 is volatilized from the absorber 6 and removed. True: The degree of vacuum in the chamber to 18 is set in the range of -5 kPa (6), for example, in the range of -5 kPa (6), preferably set to tear &amp; (6) The time period of the solvent absorption treatment of the vacuum chamber 18 is, for example, 3 to 2 seconds, preferably 5 to 30 seconds. When the printing apparatus 17 described above is subjected to the above-described printing method, the bath absorber 6 can be suppressed. The effect of the suction treatment of the ink solvent from the rubber cloth 2 (4) enables high-precision printing In the device ❹, 5, the printing device 26 is provided with: a rubber cloth 2, a rubber cloth 2, a solid 2: a rubber roller 3, a gravure 4 as a printing plate, as The printed magnetic board is in contact with the outer peripheral surface of the rubber sheet 2, (4) the endless belt 27 of the absorbent body for taking the solvent, and the warm air nozzle 28 as a heating means for the rubber sheet. The rolling 3, the fourth plate 4 and the substrate 5 are the same as those of the above embodiment. Further, in Fig. 5, the solvent absorbent body has an endless belt 27 which is in contact with the outer peripheral surface 24 200924981 of the blanket 2, and two belt coolers. Rollers 29, 3〇 and a tensioning roller 31 with a cooler for erecting a roller supporting the endless belt π and making a cooler for cooling the endless belt. The solvent sucks each of the pros 29~31 The refrigerant used in the above-described rolls 29 to 31 is not particularly limited, and may be the same as the refrigerant used in various types of coolers.

The warm air nozzles 28 are disposed to face each other at a distance from the contact surface (surface) of the rubber cloth 2 in the endless belt 27 of the solvent absorber. The warm air nozzle 28 is a slit nozzle which is elongated in a rectangular shape along the axial direction of each of the parent absorbers (4) 6 of the filler. The printing method using the printing apparatus 26 of the above-described embodiment includes a solvent evaporation order in which the ink solvent sucked from the braided belt 27 is evaporated and removed by the warm air nozzle 28 as a heating means, and a solvent evaporation step after the solvent evaporation removal step. The cooling process of cooling the endless belt 27 is performed. In the solvent evaporation and removal step, first, the two rollers 29 and 30 with the cooler that support the endless belt 27 are placed between the outer circumferential surfaces of the rubber sheets 2 at intervals (away state). . The ring: 27 is rotated around the two rollers 29, 3 () and the tension roller 31 with a cooler to eject heat from the warm air nozzle 28 toward the surface of the endless belt 27. Thereby, the surface of the endless belt 27 is heated, and after the solvent in the endless belt 27 is incident, the endless belt 27 comes into contact with the light 29 to 31 of each of the belt coolers, and the temperature thereof is cooled. 25 200924981 The surface temperature of the tape 27 does not affect the printing accuracy, but is set to ±〇.5 before and after the solvent sacrifice removal process. (The inside is preferably set within ±0.3 ° C. In the external/grain evaporation removal step, the moving speed of the endless belt 27 is, for example, 疋3 6〇min/s' is preferably 5 to 3 mm/ s. Moreover, the temperature of the warm air sprayed from the warm air nozzle ^, for example, when the solvent is a higher boiling point (2) 〇 ~ Na corpse), is 100 to 15 〇. (: Preferably, it is 12 〇 to 14 〇 C. Further, the warm air blowing time of the warm air nozzle 28 is, for example, 2 〇 to 6 〇 seconds, and V is preferably 30 to 50 seconds. If the printing device 26 performs the above printing method, Therefore, it is possible to suppress the effect of the extraction of the solvent from the rubber cloth 2 by the endless belt 27 of the solvent absorber over time, and to improve the printing productivity in high-precision printing. The printing apparatus and the printing using the printing apparatus The method is suitably used in, for example, printing of a color filter layer of a liquid crystal color filter or a black matrix, and printing of an electrode substrate in an electrode substrate of a pDp display, etc. In the high-precision printing cartridge, etc. The present invention will be described in detail with reference to a comparative example. Printing test: The materials, components, and devices used in the printing test are as follows. The ink is used in combination with a polyester resin (trade name rvylonal (registered trademark), Toyo Textile Co., Ltd.) 100. Qualitative, melamine resin (Business 26 200924981 product name "SUMIMAL (registered trademark)", Sumitomo Chemical Co., Ltd.) 20 parts by mass, butyl Acetone acetate (solvent, Kishida Chemical Co., Ltd., boiling point 248. 〇 2 〇 parts by mass, Pigment Red 177 (蒽醌 red pigment, Nagase Industry Co., Ltd.) 2 parts by mass, using a defoaming disperser ( (manufactured by SHINKI), which is mixed and dispersed. The gravure (printing plate) 4 is used on the surface of a soda lime glass substrate (width 4 mm, length 500 mm, thickness 4.8 mm, Nippon Sheet Glass Co., Ltd.). A gravure plate of a predetermined pattern (recessed portion) of hydrofluoric acid etching. A stripe pattern of 1280 patterns having a width of 1 μm, a deep ΙΟμπι, and a length of 300 mm arranged in parallel at a pitch of 270 μm is formed on the surface of the substrate. 5) A substrate made of soda lime glass (width 4 mm, length 300 mm, thickness 0.7 mm, 曰本板硝子株式会社) „ Rubber cloth 2 is used in polyethylene terephthalate (.35 mm thick) On the support film layer formed of the film of PET, an anthraquinone rubber cloth having a layer thickness of 9.9 mm formed of an anthrone rubber having a thickness of 55 mm was formed. 〆❹ In Examples, 2, and Comparative Example 1. , solvent absorber 6 makes A substrate 9 made of polyethylene terephthalate (45 μm wide, 1 μm long, thick ΙΟΟμηη) and a urethane resin (trade name “KU-7〇〇2”, 曰 on its surface) Lihua Chemical Co., Ltd. was uniformly applied to a laminate of the solvent absorbing layer 8 having a thickness of 500 μm and dried. The modulus of elasticity of the solvent absorbing layer (25 扬 扬 扬 模 )) was 〇 〇 7 MPa. Further, in the embodiment 3, the endless belt 27 as the solvent absorber is the same as the solvent absorber 6 of the first and second embodiments and the comparative example 1, and the pair of the support belts 27 is used for erecting the pair of the support belts 27. The printing conditions at the time of the flat type precision printing test by the NAKAN Co., Ltd. which used the roll 29 and the cooling of the inside of a roller are as follows. Printing speed in the ink loading process (from gravure 4 to rubber cloth 2

In any of the steps of the ink transfer step and the printing step (the ink transfer step from the blanket 2 to the substrate), the circumference of the blanket 2 can be set to 200 mm/s. The printing pressure was set such that the amount of press of the blanket 2 was 1 〇〇 μm. The printing test was performed by printing a stripe pattern on a total of 200 substrates 5 by gravure offset printing using the above materials, members and devices. Further, the line width (μιη) of the stripe pattern after printing was measured every time the printing of the substrate 5 was completed. The result is shown in Fig. 6.

quality. In Embodiment 3, 30 and a roller of the tension roller 31 cooler. The printer uses a brush machine. In the following Examples 1 to 3 and Comparative Example 1, the solvent suction step was carried out every time the printing process consisting of the ink carrying step and the printing step was performed once. Further, the tension applied to the blanket 2 was adjusted in the range of 20 to 30 kN in accordance with the measurement result of the line width of the stripe pattern after printing. Further, in the following Examples 1 and 2, similarly to the solvent aspirating step, a solvent suction step was carried out every time the printing process consisting of the ink supporting step and the printing step was performed once. In the following Example 3, in the same manner as the solvent aspirating step, the solvent evaporation removal step was carried out every time the printing process consisting of the ink supporting step and the printing step was performed once. 28 200924981 Example 1: The solvent absorption step of the above printing test was carried out by suctioning the solvent absorber 6 while moving at a speed of 30 mm/s, while sucking with a suction nozzle 14 (see Fig. 1). Example 2: The solvent absorption step of the above printing test was carried out by covering the entirety of the solvent absorber 6 with the vacuum chamber 18, and the degree of vacuum in the vacuum chamber 18 was calculated as a gauge basis - 5 kPa (G), while maintaining the specified time (refer to Figure 3). Example 3: The solvent evaporation removal step of the above-described printing test was carried out by spraying a warm air of 120 ° C from the warm air nozzle 28 while moving the endless belt 27 of the solvent absorber at a speed of 5 mm/s. (Refer to Figure 5). Further, the 'annular belt 27 is cooled by the respective keeper 29 to 31 with a cooler, and after the solvent evaporation and removal step, the change in the surface temperature of the undulation belt 27 is adjusted to within + 0·3 C. ❹ Comparative Example 1: The stripe pattern printing was repeated in the same manner as the above-described printing test except that the solvent removal step was not carried out. The results are shown in Fig. 6. For the first embodiment, the line width variation of the stripe pattern can be controlled within ±3 μm and the line width deviation of the stripe pattern in the substrate 5 can be controlled within ±3 μm. Also, the time required for the suction nozzle 14 to perform suction is 20 seconds on average. With the second embodiment, the line width variation of the stripe pattern can be controlled 29 200924981 within ±3 μm and the line width deviation of the stripe pattern in the substrate 5 can be controlled within ±4 μm. Also, the time required for the solvent suction treatment in the vacuum chamber 18 is an average of 3 sec. Further, in the third embodiment, the line width variation of the stripe pattern can be controlled within ±4 μm, and the line width deviation of the stripe pattern in the substrate 5 can be controlled within ±4 s. Also, the warming time from the warm air nozzle 28 is 30 seconds on average. ^

As a result of the above-described Example 3, it is extremely excellent in that the printing precision required for precision printing, such as a color filter layer of a liquid crystal filter, is sufficiently exceeded. Further, the measured value of the printed line width is an average value of the values measured at five points in the plane of the substrate 5 (by the I3 brush body) per one sheet of printing. The printing of the color filter layer of the liquid crystal color filter requires that the line width of the printing be changed within ±5 tons. In addition, the deviation of the line width of the pattern is judged by the value of the in-plane of the substrate 5 (printed body): if the deviation of these values is within _, it is combined, and further, from the solvent absorber 6 The treatment for removing the solvent is required to be calculated in such a manner that the processing time required for the change in the line width of the pattern is constant. In one aspect, for Comparative Example 1, when the printing line width is less than 70, ink transfer from the blanket 2 to the substrate 5 is poor. In the other Comparative Example 1, the printing process was stopped at the time when the transfer was poor. Limited to the above description, various design changes can be implemented within the scope of the precautions. Although the present invention has been disclosed in the above preferred embodiments, the present invention is not limited thereto, and any person skilled in the art can make some changes and refinements without departing from the scope of the invention. The scope of protection of the invention is subject to the definition in the attached section. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the configuration of an apparatus according to an embodiment of a printing apparatus of the present invention. Fig. 2 (a) to (C) are cross-sectional views showing an embodiment of a solvent absorber. ❹ ❹ Fig. 3 is a view showing the configuration of a device according to another embodiment of the printing apparatus of the present invention. Fig. 4 (a) is a view of the sheath portion 19 of the vacuum chamber 18 shown in Fig. 3, (b) is a right side view, and (c) is a left side view of the lid portion 2 of the vacuum chamber 18. Fig. 5 is a view showing the configuration of a device according to another embodiment of the printing apparatus of the present invention. Fig. 6 is a graph showing changes in the line width of the printed pattern in the examples and the comparative examples. [Description of main component symbols] 1 Printing device 2 Rubber cloth 3 Rubber roller 4 Concave plate 5 Substrate 6 Solvent absorber 7 Solvent absorbing mechanism 31 200924981

8 solvent absorption layer 11 to 13 roller 14 suction nozzle 15 gas nozzle 16 ultrasonic vibrator 17 printing device 18 vacuum chamber 19 sheath portion 20 cover portion 21 flange portion 22 seal 23 inner side of vacuum chamber 24 suction tube 25 cylinder 26 printing unit 27 endless belt 28 warm air nozzle 29 ~ 31 roller 32

Claims (1)

200924981 X. Patent Application Range: 1. A printing apparatus comprising: a blanket for carrying ink to be transferred onto a surface to be printed on a surface, for using the rubber cloth a blanket cylinder fixed to the surface, a solvent absorber for sucking ink into the rubber cloth by contact with the outer peripheral surface of the rubber cloth, and/or a structure for the auxiliary Wei The solvent-absorbent device of the body-absorbed oil-absorbing device of the solvent-absorbing body and not in contact with the solvent absorber 2. The printing device according to the invention of claim 2, wherein the solvent aspirating mechanism It is a suction nozzle which is spaced apart from the surface of the solvent absorber and which is disposed opposite to the solvent absorber. 3. The printing apparatus according to claim 1, wherein the solvent aspirating mechanism is a vacuum chamber for covering and adhering to the solvent absorber. 4_a printing apparatus characterized by having a rubber cloth for carrying ink to be transferred onto a surface to be printed on a surface, a blanket cylinder for applying the ink on the surface, a solvent absorber for sucking ink solvent infiltrated into the rubber cloth by contact with an outer peripheral surface of the rubber cloth, and for heating the solvent absorber to be sucked by the solvent absorber Heating mechanism for evaporating and removing ink solvent, 33 200924981 The solvent absorber has: an endless belt in contact with an outer peripheral surface of the rubber cloth, a plurality of rollers for erecting and supporting the endless belt, and Cooling the cooler of the endless belt. 5. The printing apparatus of claim 4, wherein a cooler for cooling the endless belt is mounted on the plurality of lights. The printing apparatus according to any one of claims 1 to 3, characterized in that the printing apparatus is provided with the following steps: an ink carrying process of supporting the ink on the surface of the rubber cloth, a printing step of printing ink loaded on the surface of the rubber® cloth onto the object to be printed, a solvent suction step of sucking the ink solvent infiltrated into the rubber cloth with the solvent absorber, and using the solvent The solvent aspirating means a solvent aspirating step of sucking out the solvent absorbed by the solvent absorber in a non-contact state. A printing method according to claim 4, wherein the printing apparatus is characterized in that: the ink carrying step of supporting the ink on the surface of the rubber sheet is carried out; a printing step of printing ink on the surface of the rubber sheet onto the object to be printed, a solvent sucking step of absorbing the ink in the solvent to absorb the ink solvent penetrating into the rubber cloth, and using the heating mechanism The solvent evaporation and removal step of the solvent-absorbed solvent absorption and removal process and the cooling process of cooling the solvent absorber after the solvent evaporation removal process. 34