JP2024074646A - Inkwell - Google Patents

Abstract

[Problem] To provide an ink fountain that can improve the work efficiency when changing the color of ink stored in the ink fountain. [Solution] The ink fountain 13 comprises a fountain roller 14, a pair of side walls 15 whose inner surfaces 15a face each other and are spaced apart in the axial direction of the fountain roller 14, and a bottom wall 17 located between the pair of side walls 15 in a forwardly downwardly sloping attitude such that the front end side closer to the fountain roller 14 is vertically lower than the rear end side farther from the fountain roller 14, and an ink fountain 39 capable of storing ink 38 is surrounded and formed by the outer circumferential surface 14a of the fountain roller 14, the inner surfaces 15a of the side walls 15, and the upper surface 17a of the bottom wall 17. The ink fountain 13 further comprises a mounting portion 16 to which the side walls 15 are attached. The side walls 15 are made of synthetic resin and are detachably attached to the mounting portion 16. [Selected Figure] Figure 2

Description

The present invention relates to an ink fountain that supplies ink for printing in a printing machine such as an offset printing machine.

Conventionally, an ink fountain of this type is known, for example, as shown in Patent Document 1. This type of ink fountain comprises a fountain roller with an outer circumferential surface made of steel, a pair of side walls that face each other in the axial direction of the fountain roller, and a bottom wall that slopes downward toward the front on the side between the two side walls where the fountain roller is located. The outer circumferential surface of the fountain roller, the inner surfaces of the pair of side walls, and the upper surface of the bottom wall located between the two side walls surround an ink reservoir that can store ink for printing.

When ink is stored in the ink reservoir, the ink adheres to the inner surfaces of the side walls. However, ink does not directly adhere to the upper surface of the bottom wall, as it can be covered with, for example, a plastic film. When changing the color of ink stored in the ink reservoir, it is necessary to completely remove the old ink stored in the ink reservoir before the change. In this case, replacing the plastic film with a new one will remove most of the old ink, but it will not remove the old ink that has adhered to the inner surfaces of the side walls.

JP 2021-37693 A

For this reason, old ink adhering to the inner surface of each side wall must be completely removed using a cleaning agent or the like. However, the side walls are usually made of metal and are fixed in place with high precision by bolts or the like, and therefore cannot be easily removed. As a result, there is a problem in that the work of removing old ink adhering to the inner surface of each side wall is time-consuming, which in turn makes it difficult to replace the ink stored in the ink reservoir.

Various aspects of the ink fountain for solving the above problems will be described below.
[Aspect 1] An ink fountain comprising a fountain roller, a pair of side wall portions whose inner surfaces face each other and are spaced apart in the axial direction of the fountain roller, and a bottom wall portion located between the pair of side wall portions in a forward downwardly sloping position such that the front end side, which is closer to the fountain roller, is vertically lower than the rear end side, which is the side furthest from the fountain roller, and an ink reservoir capable of storing ink is formed by the outer peripheral surface of the fountain roller, the inner surfaces of the side wall portions and the upper surface of the bottom wall portion, and the ink fountain further comprises an attachment portion to which the side wall portions are attached, the side wall portions being made of synthetic resin and being attached so as to be freely attached and detached to the attachment portion.

Normally, when ink is stored in the ink reservoir, the ink adheres to the inner surfaces of the side walls. When changing the color of ink stored in the ink reservoir, the old ink stored in the ink reservoir before the change must be completely removed. In this case, the old ink adhering to the inner surfaces of the side walls must also be completely removed using a cleaning agent, making the task of replacing the ink stored in the ink reservoir time-consuming.

In this regard, according to the above configuration, the side wall portion is made of synthetic resin, which is lighter than metal, and is attached to the attachment portion in a removable manner. This allows the side wall portion to be easily replaced. Therefore, when changing the color of ink stored in the ink reservoir, the side wall portion can be replaced in its entirety with a new one, eliminating the need to clean the side wall portion. This improves work efficiency when changing the color of ink stored in the ink reservoir.

[Aspect 2] The ink fountain according to [Aspect 1], characterized in that the mounting portion is provided with a biasing portion that presses the side wall portion against the outer peripheral surface of the fountain roller.
According to the above-mentioned configuration, since the side wall portion is pressed against the outer peripheral surface of the fountain roller by the biasing portion, it is possible to prevent a gap from being formed between the side wall portion and the outer peripheral surface of the fountain roller, and therefore it is possible to prevent ink stored in the ink reservoir from leaking out from between the side wall portion and the outer peripheral surface of the fountain roller.

[Aspect 3] The ink fountain according to aspect 1 or aspect 2, characterized in that the mounting portion includes a lower support portion that supports the side wall portion from below when the side wall portion is mounted, and an upper support portion that supports the side wall portion from above.

According to the above configuration, the side wall portion attached to the mounting portion is supported by being sandwiched between the upper support portion and the lower support portion in the vertical direction. This makes it possible to stabilize the mounting state of the side wall portion relative to the mounting portion.

[Aspect 4]
The ink fountain according to any one of [Aspect 1] to [Aspect 3], wherein the side wall portion is flexible.

The above configuration allows the side wall portion to be elastically deformed, so that the side wall portion can be easily attached to and detached from the mounting portion. In other words, the side wall portion can be easily replaced.

The present invention has the advantage of improving work efficiency when changing the color of ink stored in the ink reservoir.

FIG. 2 is a perspective view of an ink fountain according to an embodiment. FIG. 2 is a cross-sectional view of the ink fountain of FIG. 1 with a part cut away. 2 is an enlarged perspective view of the ink fountain in FIG. 1 in the vicinity of a side wall portion. FIG. 4 is a perspective view showing the state when FIG. 3 is seen from the opposite side. FIG. 4 is a perspective view showing a state in which the side wall portion in FIG. 3 is omitted. FIG. 2 is an enlarged cross-sectional view of a main part of FIG. 1 . FIG. FIG.

Hereinafter, an embodiment of the ink fountain will be described with reference to the drawings.
As shown in Figures 1 and 2, a printing press such as an offset printing press is equipped with a die-cast base 12 whose base end is supported so as to be freely rotatable on a support shaft 11 extending in a horizontal direction, and an ink fountain 13 located on the upper surface side of the base 12 and which supplies ink 38 to a printing plate (not shown).

<Base 12>
The base 12 is a generally block-shaped member that can be displaced between an operating position shown in Fig. 2 and a retracted position in which the tip end side is rotated counterclockwise by, for example, about 30° around the support shaft 11 in Fig. 2. When the base 12 is located at the operating position, the upper surface thereof forms a part of the ink fountain 13.

In the following description of directions, the directions will be described based on the directions indicated by arrows in each drawing.
<Ink fountain 13>
As shown in FIGS. 1 and 2 , the ink fountain 13 includes a fountain roller 14 , a pair of side walls 15 , a pair of mounting portions 16 , and a bottom wall 17 .

<Pot Roller 14>
1 and 2, the pot roller 14 extends in the left-right direction parallel to the support shaft 11. The pot roller 14 is a rotating body whose outer circumferential surface 14a has a cylindrical shape. The pot roller 14 is rotatably mounted between left and right frames (not shown) of the printing press. The pot roller 14 is preferably configured, for example, by a roller whose surface has relatively high sliding properties.

<Side wall portion 15>
1 to 3, the pair of left and right side walls 15 are spaced apart in the axial direction of the pot roller 14, with their inner surfaces 15a facing each other. The pair of side walls 15 are generally triangular plate-shaped members each having a sliding recess 15b that is arc-shaped in cross section at its front outer edge portion, allowing part of the outer circumferential surface 14a of the pot roller 14 to fit into the direction perpendicular to the axial direction of the pot roller 14. The pair of side walls 15 face each other with their inner surfaces 15a spaced apart from each other in the left-right direction, which is the axial direction of the pot roller 14, by a distance slightly shorter than the length of the pot roller 14.

When each side wall 15 is in a position where its lower surface 15c is horizontal, the upper surface 15d is inclined so that the vertical width narrows toward the rear. A protrusion 15e is provided at the rear end of the upper surface 15d. Each side wall 15 is made of flexible synthetic resin. In this example, each side wall 15 is made of flexible foamed resin.

<Mounting Part 16>
1, 2 and 6, a pair of left and right mounting parts 16 are attached to the base 12. A pair of side wall parts 15 are detachably attached to the pair of mounting parts 16. Since the pair of mounting parts 16 have a symmetrical structure, only the configuration of the left mounting part 16 will be described here, and the configuration of the right mounting part 16 will be omitted. The mounting parts 16 include a lower support part 18 that supports the side wall part 15 from below when the side wall part 15 is attached, and an upper support part 19 that supports the side wall part 15 from above and the left side.

As shown in Figures 5 to 7, the lower support part 18 includes a main body part 20 that extends in the front-rear direction and has a generally rectangular prism shape, a biasing part 21, and a pin 22 that rotatably connects the biasing part 21 to the front end part of the main body part 20. Step holes 23 are formed in the front and rear ends of the main body part 20, penetrating them in the up-down direction. First screw holes 24 are formed in the base 12 at positions corresponding to the step holes 23 of the main body part 20.

The main body 20 is fixed to the base 12 by inserting a cap bolt 25 into each stepped hole 23 and screwing it into the first screw hole 24. In this case, the upper end of the cap bolt 25 is located slightly lower than the upper surface 20a of the main body 20. Between the two stepped holes 23 in the main body 20, a pair of second screw holes 26 are formed spaced apart in the front-to-rear direction and penetrate the main body 20 in the left-to-right direction.

A rectangular plate-shaped protrusion 27 that protrudes forward is provided in the center of the front surface of the main body 20 in the left-right direction. The protrusion 27 is arranged so that its thickness direction is the left-right direction. A fitting hole 27a into which the pin 22 can be fitted is formed in the center of the protrusion 27, penetrating in the left-right direction.

As shown in Figures 7 and 8, the biasing portion 21 includes a coil spring 28 and a pressing portion 29 having a generally rectangular parallelepiped shape that houses the coil spring 28. An insertion groove 30 into which the protrusion 27 of the main body 20 is inserted is formed in the center of the left-right direction on the rear surface of the pressing portion 29, and extends in the vertical direction. A pair of insertion holes 31 through which the pin 22 can be inserted are formed on both the left and right sides of the insertion groove 30 in the pressing portion 29. The pair of insertion holes 31 are located in the center of the pressing portion 29 in the vertical direction.

When the protrusion 27 of the main body 20 is inserted into the insertion groove 30 of the pressing part 29, the fitting hole 27a and the pair of insertion holes 31 are aligned in a straight line in the left-right direction. A circular insertion recess 32 that can accommodate the coil spring 28 is formed in the center of the left-right direction at the lower end of the rear surface of the pressing part 29 and extends in the front-rear direction. The insertion recess 32 is located below the pair of insertion holes 31. The bottom surface 32a of the insertion recess 32 is located forward of the bottom surface 30a of the insertion groove 30. The diameter of the insertion recess 32 is slightly larger than the width of the insertion groove 30 in the left-right direction.

Then, as shown in Figures 5 to 7, with the coil spring 28 housed in the insertion recess 32 and the protruding portion 27 inserted into the insertion groove 30, the pin 22 is fitted into the fitting hole 27a and inserted into the pair of insertion holes 31. This causes the biasing portion 21 to be rotatably connected to the front end of the main body portion 20 via the pin 22. At this time, the coil spring 28 is compressed by the front surface 27b of the protruding portion 27 and the bottom surface 32a of the insertion recess 32 and elastically deforms.

As shown in Figures 5 to 8, a rectangular plate-shaped raised portion 33 is provided at the front of the upper surface of the pressing portion 29. The raised portion 33 is a portion of the upper surface of the pressing portion 29 that is higher by an amount equal to its thickness than other portions. The upper surface of the raised portion 33 is inclined so that the height increases toward the rear. The upper surface of the pressing portion 29 supports the front end portion of the side wall portion 15 from below.

When the base 12 is in the operating position, as shown in FIG. 6, the biasing portion 21 presses the lower end of the side wall portion 15 against the outer peripheral surface 14a of the pot roller 14 on the upper surface of the pressing portion 29 by the biasing force (elasticity) of the coil spring 28. At this time, the lower end of the side wall portion 15 and the upper end (rear end) of the raised portion 33 overlap, so that the upper end of the raised portion 33 presses the lower end of the side wall portion 15 more strongly against the outer peripheral surface 14a of the pot roller 14.

As shown in Figures 4 to 6, the upper support portion 19 is made of sheet metal. The upper support portion 19 includes an outer cover portion 34 that covers the outer surface 15f of the side wall portion 15, which is the surface opposite the inner surface 15a, and an upper cover portion 35 that covers the upper portion of the side wall portion 15. The outer cover portion 34 supports the side wall portion 15 from the outer surface 15f side. The upper cover portion 35 supports the upper portion of the side wall portion 15 from above.

The outer cover part 34 has a length in the front-rear direction that is slightly shorter than the outer surface 15f of the side wall part 15. A curved part 34a that is arc-shaped in cross section and extends along the sliding recess 15b of the side wall part 15 is formed in the front part of the outer cover part 34. The curved part 34a is located radially outside the sliding recess 15b. A pair of through holes (not shown) are formed in the lower end part of the outer cover part 34 at positions corresponding to the pair of second screw holes 26 of the main body part 20.

The outer cover part 34 of the upper support part 19 is fixed to the main body part 20 of the lower support part 18 by inserting a pair of bolts 36 into the pair of through holes (not shown) and screwing them into the pair of second screw holes 26, respectively. The outer cover part 34 has an arc-shaped convex part 37 extending along the curved part 34a on the surface of the side wall part 15 side.

The upper cover part 35 is integrally formed with the upper end part of the outer cover part 34. The upper cover part 35 is generally U-shaped in cross section. The upper cover part 35 extends along the upper surface 15d of the side wall part 15. The upper cover part 35 covers most of the part of the upper part of the side wall part 15 that is closer to the sliding recess 15b than the protrusion 15e. The upper cover part 35 fits into the upper part of the side wall part 15 so as to cover the upper part of the side wall part 15 from both the left and right sides and from above.

The upper cover portion 35 inhibits left-right and upward movement of the side wall portion 15. In this case, the protrusion 37 presses a part of the side wall portion 15 against the inner wall of the upper cover portion 35 in the left-right direction, suppressing left-right wobbling of the side wall portion 15. The forward movement of the side wall portion 15 is restricted by contact between the rear end of the upper cover portion 35 and the protrusion 15e of the side wall portion 15.

<Bottom wall portion 17>
1 and 2 , the bottom wall 17 is located between the pair of side walls 15 in a downwardly sloping position such that the front end side, which is closer to the pot roller 14, is vertically lower than the rear end side, which is farther from the pot roller 14. The bottom wall 17 is formed of a rectangular sheet metal member that forms a flat surface on the base 12.

The ink reservoir 39 capable of storing viscous printing ink 38 is surrounded by the outer circumferential surface 14a of the fountain roller 14, the inner surfaces 15a of both side walls 15, and the upper surface 17a of the bottom wall 17. At the bottom of the ink reservoir 39, between the outer circumferential surface 14a of the fountain roller 14 and the front edge of the bottom wall 17, an ink supply port 40 is formed for supplying ink 38 from the upstream ink reservoir 39 to the downstream side where the printing plate is located as the fountain roller 14 rotates.

A number of blades 41 are arranged in line along the axial direction (left-right direction) of the pot roller 14 on the front side of the bottom wall 17 at the top of the base 12. That is, the blades 41 are arranged at regular intervals along the front edge of the bottom wall 17. Each blade 41 is perpendicular to the top surface 17a of the bottom wall 17, and is configured so that its position can be adjusted in a direction toward or away from the outer peripheral surface 14a of the pot roller 14.

The vertical position of each blade 41 is adjusted so that a small gap 42 is always formed between the outer peripheral surface 14a of the fountain roller 14 and the upper end of each blade 41. The gap 42 allows the passage of ink 38 supplied from the upstream ink reservoir 39 to the downstream side through the ink supply port 40 as the fountain roller 14 rotates.

The width of the gap 42 is adjusted by moving the blade 41 in the vertical direction, that is, toward or away from the outer circumferential surface 14a of the fountain roller 14. By adjusting the position of the blade 41 in this way, the width of the minute gap 42 through which the ink 38 passes when the fountain roller 14 rotates is adjusted. This allows fine adjustment of the thickness of the film of ink 38 that is discharged from the ink reservoir 39 as the fountain roller 14 rotates and adheres to the outer circumferential surface 14a of the fountain roller 14.

As shown in Figures 1, 2 and 5, the upper surface 17a of the bottom wall portion 17 is covered by a rectangular sheet member 43 made of a resin film or the like. That is, the sheet member 43 is removably arranged so as to cover the upper surface 17a of the bottom wall portion 17, which forms the bottom surface of the ink reservoir 39, with a portion of the sheet member 43 near the front end in the front-rear direction being sandwiched between the outer peripheral surface 14a of the fountain roller 14 and the upper ends of each blade 41.

The front end of the sheet member 43 protrudes forward beyond each blade 41. The left and right end edges of the sheet member 43 are located at the left-right center of the lower support part 18 and extend in the front-rear direction along that center.

<Function of the ink fountain 13>
2 and 6, when ink 38 is supplied downstream by the ink fountain 13, first, the base 12 is displaced to the operating position. As a result, the sliding recesses 15b of the pair of side walls 15 slidably fit onto the outer circumferential surface 14a of the fountain roller 14. At this time, the lower end of the sliding recesses 15b of the side walls 15, which is likely to form a gap with the outer circumferential surface 14a of the fountain roller 14, is pressed against the outer circumferential surface 14a of the fountain roller 14 by the biasing force of the biasing portion 21. As a result, the lower end of the sliding recesses 15b of the side walls 15 is brought into close contact with the outer circumferential surface 14a of the fountain roller 14.

Next, when ink 38 is supplied into the ink reservoir 39, the ink 38 is stored in the ink reservoir 39. At this time, the sliding recess 15b of the side wall portion 15 is in close contact with the outer peripheral surface 14a of the fountain roller 14, and is also in close contact due to the biasing force of the biasing portion 21, especially at the lower end where a gap is likely to form between the sliding recess 15b of the side wall portion 15 and the outer peripheral surface 14a of the fountain roller 14. This prevents the ink 38 in the ink reservoir 39 from leaking out from between the sliding recess 15b of the side wall portion 15 and the outer peripheral surface 14a of the fountain roller 14.

Next, when the fountain roller 14 rotates, the ink 38 in the ink reservoir 39 is supplied downstream through the ink supply port 40 and the gap 42. This causes the printing of the printing object in the printing press. Then, for example, when the ink 38 in the ink reservoir 39 is used up and it is to be changed to a different color of ink 38, it is necessary to completely remove the old ink 38 remaining in the ink reservoir 39.

When removing the old ink 38 remaining in the ink reservoir 39, first, the fountain roller 14 is stopped and the base 12 is displaced to the retracted position. At this time, the old ink 38 is attached to the upper surface of the sheet member 43 and the inner surface 15a of each side wall portion 15. Next, each side wall portion 15 is removed from the mounting portion 16 while being elastically deformed, and then the sheet member 43 is removed from the upper surface 17a of the bottom wall portion 17. This allows the old ink 38 to be completely removed together with the sheet member 43 and each side wall portion 15.

Next, a new sheet member 43 is attached to cover the upper surface 17a of the bottom wall portion 17, and then new side wall portions 15 are attached to each mounting portion 16 while being elastically deformed. Next, the base 12 is displaced to the operating position, and new ink 38 of a different color is supplied into the ink reservoir 39.

In this way, when changing the color of the ink 38 stored in the ink reservoir 39, the side wall portion 15 to which the old ink 38 is attached can be completely replaced with a new one, eliminating the need for cleaning work to remove the old ink 38 from the side wall portion 15. This improves work efficiency when changing the color of the ink 38 stored in the ink reservoir 39.

Effects of the embodiment
According to the embodiment described above in detail, the following effects are achieved.
(1) The ink fountain 13 has a mounting portion 16 to which a side wall portion 15 is attached. The side wall portion 15 is made of synthetic resin, and is attached to the mounting portion 16 in a detachable manner.

Normally, when ink 38 is stored in ink reservoir 39, the ink 38 adheres to each inner surface 15a of sidewall portion 15. When changing the color of ink 38 stored in ink reservoir 39, the old ink 38 stored in ink reservoir 39 before the change must be completely removed. At this time, the old ink 38 adhering to each inner surface 15a of sidewall portion 15 must also be completely removed using a cleaning agent or the like, which makes the task of replacing ink 38 stored in ink reservoir 39 time-consuming.

In this regard, according to the above configuration, the side wall portion 15 is made of synthetic resin, which is lighter than metal, and is attached to the attachment portion 16 in a removable manner. This allows the side wall portion 15 to be easily replaced. Therefore, when changing the color of the ink 38 stored in the ink reservoir 39, the side wall portion 15 can be replaced in its entirety with a new one, eliminating the need to clean the side wall portion 15. This improves work efficiency when changing the color of the ink 38 stored in the ink reservoir 39.

(2) In the ink fountain 13 , the mounting portion 16 is provided with the biasing portion 21 that presses the side wall portion 15 against the outer circumferential surface 14 a of the fountain roller 14 .
According to the above configuration, the biasing portion 21 presses the sliding recess 15b of the side wall portion 15 against the outer peripheral surface 14a of the fountain roller 14, thereby preventing a gap from being formed between the sliding recess 15b of the side wall portion 15 and the outer peripheral surface 14a of the fountain roller 14. Therefore, the ink 38 stored in the ink reservoir 39 can be prevented from leaking out from between the sliding recess 15b of the side wall portion 15 and the outer peripheral surface 14a of the fountain roller 14.

(3) In the ink fountain 13, the mounting portion 16 includes a lower support portion 18 that supports the side wall portion 15 from below when the side wall portion 15 is mounted, and an upper support portion 19 that supports the side wall portion 15 from above.

According to the above configuration, the side wall portion 15 attached to the attachment portion 16 is supported by being sandwiched in the vertical direction between the upper support portion 19 and the lower support portion 18. This makes it possible to stabilize the attachment state of the side wall portion 15 to the attachment portion 16.

(4) In the ink fountain 13, the side wall portion 15 is flexible.
According to the above-described configuration, the side wall portion 15 is elastically deformable, so that the side wall portion 15 can be easily attached to and detached from the mounting portion 16. In other words, the side wall portion 15 can be easily replaced.

<Example of change>
The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other as long as they are not technically inconsistent.

The side wall portion 15 does not necessarily have to be flexible. That is, the side wall portion 15 may be made of, for example, a hard synthetic resin.
The mounting part 16 does not necessarily have to include the lower support part 18 and the upper support part 19. In other words, the mounting part 16 may be configured by, for example, a needle that can pierce the side wall part 15. In this way, the side wall part 15 can be easily attached to and detached from the needle (mounting part 16) by piercing the side wall part 15 with the needle or pulling the side wall part 15 out of the needle.

The biasing portion 21 may be omitted.
The coil spring 28 constituting the biasing portion 21 may be changed to a leaf spring.

LIST OF SYMBOLS 11...Support shaft 12...Base 13...Ink fountain 14...Fountain roller 14a...Outer surface 15...Side wall portion 15a...Inner surface 15b...Sliding recess 15c...Lower surface 15d...Upper surface 15e...Protrusion 15f...Outer surface 16...Mounting portion 17...Bottom wall portion 17a...Upper surface 18...Lower support portion 19...Upper support portion 20...Main body portion 20a...Upper surface 21...Pressing portion 22...Pin 23...Step hole 24...First screw hole 25...Cap bolt 26...Second screw hole 27...Protrusion 27a...Fitting hole 27b...Front surface 28...Coil spring 29...Pressing portion 30...Insertion groove 30a...Bottom surface 31...Through hole 32...Insertion recess 32a...Bottom surface 33...Raised portion 34: Outer surface cover portion 34a: Curved portion 35: Upper cover portion 36: Bolt 37: Convex portion 38: Ink 39: Ink reservoir 40: Ink supply port 41: Blade 42: Gap 43: Sheet member

Claims (4)

an ink fountain comprising: a fountain roller; a pair of side walls whose inner faces face each other and are spaced apart in the axial direction of the fountain roller; and a bottom wall disposed between the pair of side walls and disposed in a downwardly sloping manner such that a front end side closer to the fountain roller is vertically lower than a rear end side farther from the fountain roller, the ink fountain being formed by an outer circumferential surface of the fountain roller, the inner faces of the side walls, and an upper surface of the bottom wall surrounding an ink reservoir capable of storing ink,
a mounting portion to which the side wall portion is attached,
The ink fountain is characterized in that the side wall portion is made of synthetic resin and is detachably attached to the attachment portion. The ink fountain according to claim 1, characterized in that the mounting portion is provided with a biasing portion that presses the side wall portion against the outer peripheral surface of the fountain roller. The ink fountain according to claim 1 or 2, characterized in that the mounting portion includes a lower support portion that supports the side wall portion from below when the side wall portion is mounted, and an upper support portion that supports the side wall portion from above. The ink fountain according to claim 1 or 2, characterized in that the side wall portion is flexible.

Images