JP7406056B2 - Printing device and printing method - Google Patents

Description

The present invention relates to a printing device and a printing method. In particular, the present invention relates to a printing device and a printing method using a printing plate with a flat surface.

There is a printing technique using a silicone plate (Patent Document 1). This printing technique will be explained using cross-sectional views in FIGS. 1(a) to 1(f).
A first version 14a is prepared in FIG. 1(a). This first version 14a is made of silicone. The surface of the first version 14a has a medium adhesion region 22c and has a medium adhesion force.

In FIG. 1(b), ink 21 is applied to the entire surface of the first plate 14a.
In FIG. 1(c), a second version 15a is laminated from the top surface of this ink 21. This second version 15a is also made of silicone. The surface of the second version 15a is a low adhesion region 22a, and by irradiating the surface with light, a high adhesion region 22b with strong adhesion is formed on the irradiated surface, and a low adhesion region 22a with low adhesion is formed on the irradiated surface. It is divided into a high adhesion region 22b with high adhesion strength.
In FIG. 1(d), the second version 15a is separated from the first version 14a. At this time, the ink 21b on the high adhesion area 22b adheres to the second plate 15a, and the ink 21a on the low adhesion area 22a does not adhere and remains on the first plate 14a. In other words, the ink 21 adheres to the direction where it is easier to adhere.

In FIG. 1(e), the second version 15a of FIG. 1(d) is laminated onto the object 20. In FIG. Thereafter, the second version 15a is removed.
As a result, ink 21b remains on the surface of the object 20 in FIG. 1(f).

With this printing technique, a pattern of ink 21b can be formed on the object 20.
The adhesion of the ink 21 becomes weaker in the order of high adhesion area 22b, medium adhesion area 22c, and low adhesion area 22a. Due to this order, the ink 21a remains on the first plate 14a and the ink 21b remains on the second plate 15a in FIG. 1(d).

Furthermore, if the surface of the object 20 has higher adhesion of the ink 21 than the high adhesion region 22b of the second version 15a, the ink 21 will adhere to the surface of the object 20.
With this printing technique, the second plate 15a can be produced using optical technology, so a pattern with a large area can be formed. In particular, it can be used as a pattern forming technique for large displays, etc.

This printing technology does not require plate processing, and can be implemented at low cost and in a short time. The second version 15a is a version with a flat surface.
Note that FIG. 2 is a cross-sectional view illustrating a process in which the low adhesion region 22a and the high adhesion region 22b in FIG. 1 are replaced. In this case, the ink 21a is finally transferred to the object 20 by the first plate 14a.
Moreover, FIG. 3 is a sectional view illustrating a process when the first version 14a in FIG. 1 and the version 15a in FIG. 2 are replaced.
Further, FIG. 4 is a cross-sectional view illustrating a process in which the low adhesion region 22a and the high adhesion region 22b in FIG. 3 are replaced.

Patent No. 6411254

However, at present, there is no device that can continuously print using a plate with a flat surface.
Therefore, an object of the invention of the present application is to provide a printing device using a printing plate having a flat surface.

In order to solve the above problem, a first version and a second version each having a flat surface, and a first holding part and a second holding part in which the first version and the second version are respectively disposed on the surface separately. an ink supply unit that supplies ink to the first plate or the second plate; a stage that holds an object to which the ink on the first plate or the second plate is transferred; and an adhesive tape. and a cleaning mechanism for removing the ink from the surface of the first plate or the second plate with the adhesive tape, the ink is removed between the first plate and the second plate. Use a printing device for delivery.

In the printing apparatus described above, the ink supplying step of supplying the ink from the ink supply section to the first plate on the surface of the first holding section or the second plate on the surface of the second holding section; a pattern forming step of transferring a portion of the ink between the plate and the second version; a transfer step of transferring the portion of the ink to the object; and the first holding section or the second holding section. A printing method is used that includes a cleaning step of cleaning the surface of the printer with an adhesive tape.

The printing apparatus and printing method of the present invention can provide a printing apparatus and a printing method using the printing plate having the flat surface described above.

(a) to (f) Cross-sectional views explaining conventional printing technology (a) to (f) Cross-sectional views explaining conventional printing technology (a) to (f) Cross-sectional views explaining conventional printing technology (a) to (f) Cross-sectional views explaining conventional printing technology Cross-sectional view of the printing device of Embodiment 1 Cross-sectional view of a printing device according to Embodiment 2 (a) to (c) Cross-sectional views of the printing device of Embodiment 2 (a) Cross-sectional view of the printing device of Embodiment 3, (b) Cross-sectional view of the cleaning tool of the printing device of Embodiment 3 Cross-sectional view of a printing device according to Embodiment 4 Cross-sectional view of a printing device according to Embodiment 4 Cross-sectional view of a printing device according to Embodiment 5 Cross-sectional view of a printing device according to a sixth embodiment

The present invention will be described below using embodiments, but the invention is not limited thereto.
(Embodiment 1) Printing device using flexographic technology FIG. 5 shows a cross-sectional view of a printing device 100 according to Embodiment 1. First, a case using the process shown in FIG. 1 will be explained.

<Structure of printing device 100>
The printing device 100 includes a cleaning system 50a that cleans the first holding section 14, an ink patterning system 50b that includes the first holding section 14 and the second holding section 15, and an object 20 to which ink is transferred. system 50c.

(1) Cleaning system 50a
The cleaning system 50a cleans the first plate 14a on the surface of the first holding section 14. The cleaning system 50a includes a supply section 10, a guide section 11, an adhesive tape 12, a cleaning mechanism 13, a guide section 18, and a collection section 19.

The supply unit 10 supplies the adhesive tape 12, and for example, the adhesive tape 12 is wound around the surface of a roll. Hereinafter, the roll is cylindrical. It may be rod-shaped.
The guide section 11 applies tension to and guides the adhesive tape 12, and is, for example, a roll.
The adhesive tape 12 is a tape having adhesive properties for removing ink from the surface of the first holding portion 14 .

If the adhesive tape 12 is highly adhesive, the first version 14a may be broken. Therefore, as the adhesive tape 12, a slightly adhesive tape is used. The adhesive strength is preferably 20 to 400 N/m. Also, 40 to 200 N/m is preferable. Furthermore, 80 to 160 N/m is preferable. The material is polyolefin or polypropylene.
Do not use cleaning methods that use organic solvents. This is because organic solvents are not good for the body and take time to clean properly.

The cleaning mechanism 13 attaches the adhesive tape 12 to the first plate 14a (FIG. 1) disposed on the surface of the first holding part 14, and uses the adhesive tape 12 to remove ink from the surface of the first plate 14a. As a result, the surface of the first version 14a is cleaned.
Note that in FIG. 5, the ink pattern system 50b, the cleaning system 50a, and the object system 50c are each movable. The cleaning system 50a can also clean the second holding section 15.

The cleaning mechanism 13 needs to hold the adhesive tape 12 against the first holding part 14, and therefore requires a certain degree of strength. The hardness A is preferably 15° or more. In terms of Young's modulus, it is preferably 500 kPa to 50 MPa (15°=500 kPa). The same applies to the cleaning mechanism and cleaning tool described below. The cleaning mechanism 13 is rigid enough not to bend, and rotates on its surface so as to feed the adhesive tape 12. Note that the adhesive tape 12 may slide on the surface of the cleaning mechanism 13. However, the cleaning mechanism 13 may be made of a material that grips the adhesive tape 12 with an adhesive force smaller than the adhesion force between the adhesive tape 12 and the plate on the surface of the holder.
The guide section 18 applies tension to and guides the adhesive tape 12, and is, for example, a roll.

The collecting unit 19 collects the adhesive tape 12, and is, for example, a roll, and collects the adhesive tape 12 while winding it on its surface.
(2) Ink pattern system 50b
The ink pattern system 50b includes a first holding section 14, a second holding section 15, and an ink supply section 16.
(2a) Second holding part 15
The second holding part 15 is, for example, in the shape of a roll or a flat plate, and has a second version 15a shown in FIG. 1 on its surface. This will be explained in the case of rolls. The roll is a roll that receives on its surface an ink corresponding to a pattern and transfers the ink to the object 20.

The second version 15a has silicone on its surface. The second version 15a has silicone having a thickness of 25 μm on a base material having a thickness of 125 μm.

Since silicone is the most widely used material for the second version 15a (excluding the base material, the same applies hereinafter), the second version 15a made of silicone will be described in detail.
Surface adhesion and surface free energy of the silicone surface vary depending on its composition, crosslinking density, degree of crosslinking, average molecular weight, and average pore diameter. Therefore, even if the contact angle and the surface free energy estimated from the contact angle are the same, the adhesion varies greatly depending on the above-mentioned physical factors. Therefore, the transferability is not determined solely by the difference in surface free energy as is generally known. Furthermore, the adhesion of silicone surfaces that have absorbed solvent generally decreases. In other words, even if the surface of the first plate 14a to which ink is applied and the surface of the second plate 15a (FIG. 1) that receives ink are made of the same material, the ink adhesion force on the surface of the second plate 15a is , can be made smaller than the ink adhesion force on the surface of the first plate 14a.

As the silicone used as the second version 15a, a crosslinked product of polydimethylsiloxane is mainly used. The hardness of silicone is preferably about 0.5 MPa to 50 MPa. The silicone may be cured by any of room temperature curing, thermosetting, and UV curing. In the case of a sheet-like second version 15a, the surface of the second version 15a is formed flat so that ink with a uniform thickness is formed, and the surface roughness Ra is 50 nm or less (preferably 10 nm or less). ) is formed on a smooth surface. Silicone is generally highly elastic and tends to cause pattern distortion, so it is desirable to laminate a plastic film, glass, or metal base material to the back of the silicone and fix it. Further, a cushioning material may be used as appropriate for adjusting the printing pressure.

The objects 20 are various products. For example, it is a display. The material may be a material with relatively high surface free energy and high surface smoothness, such as glass, silicon compounds such as silicon wafers, solid metals, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, etc. . Low surface free energy materials such as polytetrafluoroethylene are not suitable for object 20.

(2b) First holding part 14
The first holding section 14 is, for example, in the shape of a roll or a flat plate, receives ink 21 from the ink supply section 16 on the first plate 14a on its surface, and supplies the ink 21 to the second holding section 15 . The ink 21a is transferred between the first version 14a and the second version 15a.

The first version 14a is also silicone. The total thickness is 165 μm, with silicone on the surface, and the thickness is 40 μm.

As the ink 21, a composition for reverse transfer printing is suitably used. That is, it contains a surfactant as a surface energy adjusting agent, a quick-drying solvent and a slow-drying solvent, and further contains a solid content that exhibits the functionality of the ink. Examples of such inks include, but are not limited to, fine particle dispersed inks made of conductive metals, organic semiconductor inks, oxide semiconductor sol-gel inks, insulating polymer inks, and the like. The solid content varies depending on the product manufactured and the target material.

The ink film in the method according to this embodiment is required to have a thickness of about 1 μm or less, although it is affected by the ink viscoelastic modulus in a semi-dry state. This is because the ink needs to be broken in the process of receiving the required portion of the ink due to the difference in adhesion between the plates. This is because the greater the distortion at the break point of the ink film in a semi-dry state (that is, the higher the film-forming ability), the more difficult it is to accept the ink. It is necessary to reduce the transfer speed, or increase the difference in adhesion.

(2c) The ink supply section 16 uniformly supplies the ink 21 to the first plate 14a on the surface of the first holding section 14. A layer of ink 21 having a constant thickness is formed on the surface of the first plate 14a using die coating or a squeegee. Note that, as will be explained below, when performing the processes shown in FIGS. 2 and 3, the ink supply section 16 supplies the ink 21a to the second holding section 15.
(3) Object system 50c
The object system 50c holds the object 20 and has a moving stage 17. Stage 17 is movable. Object 20 placed on stage 17 receives patterned ink.
<Process of printing device 100>
(1) Ink Supply Step Similarly to FIG. 1B, ink 21 is supplied from the ink supply section 16 to the entire surface of the first plate 14a on the surface of the first holding section 14. The ink supply section 16 is, for example, a die nozzle, and the first holding section 14 rotates. As a result, an ink layer (ink film) of a constant thickness can be formed over the entire surface of the first plate 14a.

(2) Pattern Forming Step The second holding section 15 and the first holding section 14 rotate synchronously. Similar to FIGS. 1(c) to 1(d), the first holding unit 14 transfers a part of the ink film of the first plate 14a on the surface to the second plate 15a on the surface of the second holding unit 15. hand over.

(3) Transfer process Similar to FIGS. 1(e) to 1(f), the second plate 15a on the second holding unit 15 transfers the received ink film to the object 20 on the stage 17.
In FIG. 5, the object system 50c and the second holding section 15 are separated, but when transferring the second holding section 15 to the object 20, the object system 50c and the second holding section 15 are The ink 21b can be printed on the object 20.
(4) Cleaning process The adhesive tape 12 is moved by the cleaning system 50a. The adhesive tape 12 is pressed against the first version 14a on the first holding part 14 by the cleaning mechanism 13. As a result, the adhesive tape 12 removes the remaining ink on the first plate 14a. Similarly, the second holding part 15 and the cleaning system 50a move relative to each other, and the second plate 15a on the surface of the second holding part 15 can also be cleaned.
Note that when the cleaning is completed, the cleaning system 50a is separated from the first holding section 14. At this time, the double-sided tape 12 maintains tension in the guide parts 11 and 18 and smoothly separates from the first holding part 14. The plate can be kept clean.

The first version 14a shown in FIG. 1 is located on the surface of the first holding part 14, and the second version 15a is located on the surface of the second holding part 15. Similarly to FIGS. 1(a) to 1(f), the ink 21 can be patterned and transferred onto the surface of the object 20.
Since the second plate 15a or the first plate 14a is cleaned by the cleaning system 50a, continuous printing is possible.

<Effects of Embodiment 1>
With the above configuration and process, ink can be continuously patterned and applied to an object.
Note that the case where the processes shown in FIGS. 2 to 4 are used will be described.
Table 1 below compares the processes of FIGS. 1-4.
Table 2 compares the processes of each holding section in the case of Embodiment 1 (FIG. 5).
In order to realize the processes shown in FIGS. 1 to 4 using the apparatus shown in FIG. 5, the relationship between the first and second holding parts and the plates set therein is as shown in Table 3.
With this arrangement, the processes shown in FIGS. 1 to 4 can be realized using the apparatus shown in FIG.
Note that the processes shown in FIGS. 1 to 4 can be similarly realized in the following embodiments.
(Embodiment 2) First and second cleaning tools Embodiment 2 will be described using the cross-sectional view of FIG. 6. The difference from the first embodiment is that the cleaning mechanism 13 includes two cleaning tools. Items not explained are the same as those in the first embodiment. Although not shown, there is a first version 14a or a second version 15a on the surface of the first holding part 14. The existing version changes in the process shown in Table 3. By relatively moving the cleaning system 50a, both the first holding section 14 and the second holding section 15 can be cleaned. As will be described below with reference to FIG. 6, as shown in Table 3, the first holding part 14 and the second holding part 15 may be reversed.

The cleaning mechanism 13 includes a first cleaning tool 13a and a second cleaning tool 13b.
For example, the first cleaning tool 13a and the second cleaning tool 13b are roll-shaped.
The first cleaning tool 13a is located upstream of the second cleaning tool 13b in the rotational direction of the first holding part 14, and comes into contact with the first holding part 14 first.
The second cleaning tool 13b is located on the downstream side of the first cleaning tool 13a in the rotational direction of the first holding part 14, and comes into contact with the first holding part 14 later.

The first cleaning tool 13a touches the first version 14a on the surface of the first holding part 14, and sticks the adhesive tape 12 on the first holding part 14.
The second cleaning tool 13b peels off the adhesive tape 12 from the first version 14a on the surface of the first holding part 14.

Unlike the first embodiment, the adhesive tape 12 is temporarily attached to the first version 14a on the surface of the first holding part 14, and then removed.
Similar to the first embodiment, when performing the processes shown in FIGS. 1 to 4, the plate on the surface of the first holding portion 14 is cleaned. Furthermore, the plate on the surface of the second holding part 15 can be cleaned by relative movement.
<Diameter of cleaning tool>
The diameter of the first cleaning tool 13a is preferably larger than the diameter of the second cleaning tool 13b. The first cleaning tool 13a preferably has a larger diameter and presses against the first holding part 14 in order to firmly attach the adhesive tape 12 to the first version 14a or the second version 15a on the surface of the first holding part 14. On the other hand, in order to quickly peel off the adhesive tape 12 of the first version 14a or the second version 15a on the surface of the first holding part 14, the second cleaning tool 13b preferably has a smaller diameter.

<Ratio of the diameter a of the second cleaning tool and the diameter b of the first holding part 14>
The ratio of the diameter a of the second cleaning tool to the diameter b of the first holding portion 14 will be explained with reference to FIGS. 7(a) to 7(c).
FIG. 7A is a cross-sectional view showing the positional relationship between the second cleaning tool 13b having a large diameter and the first holding portion 14. FIG. FIG. 7(c) is a cross-sectional view showing the positional relationship between the second cleaning tool 13b having a small diameter and the first holding portion 14. As shown in FIG. FIG. 7(b) is a cross-sectional view showing the positional relationship between the second cleaning tool 13b and the first holding portion 14 having a size between that shown in FIGS. 7(a) and 7(c).

The relationship between the ratio (b/a) of the diameter a of the second cleaning tool and the diameter b of the first holding part 14 and the peeling force was investigated. If the peeling force is large, it is not good because it will damage the first plate 14a or the second plate 15a.

The peeling force was measured using an adhesive/film peeling analyzer VPA-3 manufactured by Kyowa Interface Science Co., Ltd.

By specifying the radius b of the first holding part 14, the radius a of the second cleaning tool was changed as shown in Table 4.

The adhesive tape 12 used was a polyolefin film coated with an acrylic adhesive. The thickness shown in Table 4 was used.

If the ratio is small, force will be applied during peeling, and the first plate 14a or second plate 15a will be damaged. Furthermore, if the adhesive tape 12 is thin, it may stretch or jump up, and the peeling force is unstable and high.

As a result, at least a ratio of 2 or more is required. 4 or more is good. Furthermore, 8 or more is preferable. The thickness of the adhesive tape 12 needs to be 70 μm or more. The thickness is preferably 90 μm or more, and preferably 100 μm or more.
<Effects of Embodiment 2>
In addition to the effects of Embodiment 1, the surface of the first holding part 14 can be cleaned more and patterns can be formed more accurately. Note that even in the first embodiment in which there is only one cleaning tool, the same can be said of the ratio and the thickness of the adhesive tape.
Further, the same applies when cleaning the second holding section 15. The positions of the cleaning system 50a, the first holding section 14, the second holding section 15, the ink supply section 16, and the object system 50c can be changed independently.

(Embodiment 3) Second cleaning tool 13
Embodiment 3 will be described using the cross-sectional view of FIG. 8(a). The difference from the second embodiment is the shape of the second cleaning tool 13b and that the second cleaning tool 13b does not rotate. Items not explained are the same as those in the first and second embodiments.

The second cleaning tool 13b does not rotate, but the adhesive tape 12 slides on its surface. The second cleaning tool 13b is a triangular prism block with a cylindrical body at the tip. The ratio described in the second embodiment can be increased.
Note that FIG. 8(b) shows an enlarged view of the second cleaning tool 13b. A small cylindrical body is provided at the end of the second cleaning tool 13b. The cylinder may also be rotated. The cylindrical body may be fixed and the adhesive tape 12 may be slid on the surface thereof. When fixing, a part of the cylindrical body is sufficient.
In addition, although the above was a case of cleaning the first holding part 14, the same applies to the case of cleaning the second holding part 15. Further, the first cleaning tool 13a, the cleaning mechanism 13, and the third cleaning tool 13c (sixth embodiment) may be the same as the second cleaning tool 13b of this third embodiment.
The cleaning system 50a does not always clean the first holding part 14, but periodically cleans it.

(Fourth Embodiment) Example of using a flat plate instead of a roll A printing apparatus 400 according to a fourth embodiment will be described using the cross-sectional view of FIG. Items not explained are the same as above.
The difference from Embodiment 1 (FIG. 5) is that the first holding part 14 or the second holding part 15 is not roll-shaped but flat-plate shaped.
In FIG. 9, the first holding part 14 has a flat plate shape, and the second holding part 15 has a roll shape. The first holding part 14 moves relatively and comes into contact with the cleaning mechanism 13 and also with the second holding part 15. Similar to the embodiment described above, printing can be performed on the object 20.
In FIG. 10, the first holding part 14 has a roll shape, and the second holding part 15 has a flat plate shape. The second holding section 15 moves in the vertical direction and comes into contact with the first holding section 14 . It also moves horizontally, moves vertically, and comes into contact with the object 20. Similar to the embodiment described above, printing can be performed on the object 20.
Although not shown, the first holding part 14 and the second holding part 15 may have a flat plate shape.
Printing can be performed in the same manner as above.

(Embodiment 5) Cleaning system 50
A printing apparatus 500 according to a fifth embodiment will be explained using the cross-sectional view of FIG. 11. Items not explained are the same as above.
The difference from the first embodiment (FIG. 5) is that there are two cleaning systems 50a.
The first holding part 14 and the second holding part 15 can be cleaned by separate cleaning systems 50. Cleaning can be done for a long period of time with less movement of each element.
In this example, there are two cleaning systems 50, but they may be combined into one cleaning system 50, with one collection unit 19, one supply unit 10, two guide units 11, 18, and two cleaning mechanisms 13 each. . The cleaning mechanism 13 may be the one in the second embodiment.
Note that in other embodiments as well, it is preferable that the first holding part 14 and the second holding part 15 be cleaned by separate cleaning systems 50. From the viewpoint of tact (time) and complexity of the mechanism, it is preferable to provide separate cleaning systems 50.

(Embodiment 6) Third cleaning tool 13c
A printing apparatus 600 according to a sixth embodiment will be explained using an enlarged cross-sectional view of FIG. 12. Items not explained are the same as above. FIG. 12 is an enlarged view of the vicinity of the first holding part 14.
The difference from the second embodiment (FIG. 6) is that there are three cleaning tools.
A third cleaning tool 13c is located between the first cleaning tool 13a and the second cleaning tool 13b. The third cleaning tool 13c presses the adhesive tape 12 against the first holding part 14.
The adhesive tape 12 may be slightly lifted from the first holding part 14 between the first cleaning tool 13a and the second cleaning tool 13b. Prevent this and ensure proper cleaning.

(as a whole)
Each embodiment can be combined. For example, the ratio in the second embodiment is also valid in the first and third embodiments. The roll may or may not rotate.
In addition, just before the adhesive tape 12 of the roll-shaped supply section 10 runs out, the roll-shaped adhesive tape 12 of the new supply section 10 is pasted on the adhesive tape 12 of the old supply section 10, and the old supply section 10 and the new supply section 10 are separated. It is better to exchange it with Note that a mechanism is preferable in which the core around which the adhesive sheet 12 of the old supply section 10 is wrapped is crushed and the new supply section 10 is arranged.

The printing device of the present invention is used as a printing device that uses various types of plates such as flexographic plates and intaglio plates.

10 Supply section 11 Guide section 12 Adhesive tape 13 Cleaning mechanism 13a First cleaning tool 13b Second cleaning tool 14 First holding section 14a First plate 15 Second holding section 15a Second plate 16 Ink supply section 17 Stage 18 Guide section 19 Collection unit 20 Object 21 Ink 21a Ink 22a High adhesive area 22b Low adhesive area 22c Medium adhesive area 50a Cleaning system 50b Ink supply system 50c Object system 100, 200, 300, 400, 500 Printing device

Claims (12)

The first and second editions have flat surfaces,
a first holding part and a second holding part in which the first version and the second version are respectively arranged on the surface separately;
an ink supply unit that supplies ink to the first version or the second version;
a stage that holds an object to which the ink on the first plate or the second plate is transferred;
a cleaning mechanism that has an adhesive tape on its surface and removes the ink from the surface of the first version or the second version with the adhesive tape,
A printing device that transfers the ink between the first version and the second version,
The adhesive tape has an adhesive force of 20 to 400 N/m, and the printing machine removes the ink from the surface of the first plate or the second plate by itself. The first and second editions have flat surfaces,
a first holding part and a second holding part in which the first version and the second version are respectively arranged on the surface separately;
an ink supply unit that supplies ink to the first version or the second version;
a stage that holds an object to which the ink on the first plate or the second plate is transferred;
a cleaning mechanism that has an adhesive tape on its surface and removes the ink from the surface of the first version or the second version with the adhesive tape,
A printing device that transfers the ink between the first version and the second version,
The cleaning mechanism includes a first cleaning tool, a second cleaning tool, and a third cleaning tool located between the first cleaning tool, the second cleaning tool, and the third cleaning tool. . A printing device that removes the ink by contacting the surface of the first plate or the second plate through the adhesive tape, respectively. 3. The printing apparatus according to claim 1, wherein the cleaning mechanism has a triangular prism shape with a cylindrical tip and does not rotate. With respect to the diameter of the roll-shaped first holding part or the diameter of the roll-shaped second holding part,
The diameter ratio of the roll-shaped cleaning mechanism is 2 or more,
The cleaning mechanism presses the adhesive tape located between the cleaning mechanism and the first plate against the first plate, or
The printing apparatus according to any one of claims 1 to 3, wherein the cleaning mechanism presses the adhesive tape located between the cleaning mechanism and the second plate against the second plate. 5. The printing apparatus according to claim 1, wherein the first holding part and the second holding part have a roll shape or a flat plate shape. The printing apparatus according to claim 1, wherein the cleaning mechanism includes a first cleaning tool and a second cleaning tool. The printing apparatus according to claim 6 , wherein the first cleaning tool and the second cleaning tool are roll-shaped. The surface of the second version has a high adhesion area where ink adhesion is high and a low adhesion area where ink adhesion is lower than the high adhesion area,
The surface of the first version has a medium adhesion area having ink adhesion between the high adhesion area and the low adhesion area,
When the ink is applied to the surface of the first plate, delivering the ink between the medium adhesion area and the high adhesion area,
8. The printing apparatus according to claim 1, wherein when the ink is applied to the surface of the second plate, the ink is transferred between the small adhesion area and the medium adhesion area. The printing apparatus according to any one of claims 1 to 8, wherein the first plate and the second plate contain silicone. The device according to any one of claims 1 to 9,
an ink supply step of supplying the ink from the ink supply section to the first version on the surface of the first holding section or the second version on the surface of the second holding section;
a pattern forming step of transferring a portion of the ink between the first version and the second version;
a transfer step of transferring the part of the ink to a target object;
A printing method including a cleaning step of cleaning the surface of the first holding part or the second holding part with an adhesive tape. an ink supply step of supplying the ink from the ink supply section to the first version on the surface of the first holding section or the second version on the surface of the second holding section;
a pattern forming step of transferring a portion of the ink between the first version and the second version;
a transfer step of transferring the part of the ink to a target object;
A printing method including a cleaning step of cleaning the surface of the first holding part or the second holding part with an adhesive tape,
The adhesive tape has an adhesive force of 20 to 400 N/m, and the printing method removes the ink from the surface of the first plate or the second plate by itself. an ink supply step of supplying the ink from the ink supply section to the first version on the surface of the first holding section or the second version on the surface of the second holding section;
a pattern forming step of transferring a portion of the ink between the first version and the second version;
a transfer step of transferring the part of the ink to a target object;
A printing method including a cleaning step of cleaning the surface of the first holding part or the second holding part with an adhesive tape,
using a cleaning mechanism that has the adhesive tape on its surface and removes the ink on the surface of the first version or the second version with the adhesive tape;
The cleaning mechanism includes a first cleaning tool, a second cleaning tool, and a third cleaning tool located between the first cleaning tool, the second cleaning tool, and the third cleaning tool. . A printing method in which the ink is removed by contacting the surface of the first plate or the second plate through the adhesive tape, respectively.