JPH10278232A - Ink fountain device of printing press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink fountain device capable of rapidly and easily removing the residual ink in an ink fountain. SOLUTION: A long protective film 15 drawn out of a supply roll 16 is passed through an ink fountain to cover an ink fountain bottom surface 7a and an ink fountain side surface 10. At a time of the replacement of ink, an ink fountain main body 7 and the ink fountain side plate 10 are retracted to a lower retraction position and, in this state, the protective film 15 is taken up to move a part to which residual ink is bonded to the outside of the ink fountain and a new part is positioned above the ink fountain and, subsequently, the ink fountain main body 7 and the ink fountain side plate 10 are raised to the original operation position and the heating member provided to the end surface of the ink fountain side plate heats the side edge parts of the protective part 15 being in contact with the heating member to be softened to be stretched and the side edge parts are held between the fountain roller 3 and the ink fountain and the vicinities of them are set to the position covering the ink fountain side surface 10a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink fountain device used for an offset printing machine, a letterpress printing machine, and the like, and more particularly to an ink fountain device capable of easily removing and cleaning ink inside the ink fountain.

[0002]

2. Description of the Related Art In an offset printing machine or a letterpress printing machine, the amount of ink to be supplied must be changed in accordance with a picture at the time of printing. Usually, an ink supply zone is divided into a plurality of sections in the width direction of the picture ( The ink is supplied to a zone having a large area ratio and a small amount to a zone having a small area ratio. Generally, an ink fountain system is used for an inking device in an offset printing machine or a letterpress printing machine.In order to adjust the amount of supplied ink, a large number of ink keys arranged side by side in the width direction are slid and the key tip and the original roller are moved. Is performed by changing the gap. This method has an advantage that the amount of supplied ink can be accurately controlled.

By the way, in the inking unit, cleaning is necessary at the time of item change (color change), and naturally the inner surface of the ink fountain is also cleaned. The cleaning of the inner surface of the ink fountain is difficult to automate, and is usually performed manually by an operator.

[0004]

However, cleaning the inner surface of the ink fountain is troublesome, which is a hindrance in improving the productivity. Further, if the cleaning is insufficient, the ink may enter the gap between the keys and dry, resulting in malfunction of the keys. To solve these problems, a method has been proposed in which a film is attached to an ink fountain and a key, and the film is replaced at the time of cleaning to simplify the cleaning. The method of applying a film is to apply a cut sheet-like film,
There are those that apply a continuous film and wind up a used film. However, in either method, a film is applied only to the flat bottom surface of the ink fountain, and the inner surfaces (side surfaces) on both sides of the ink fountain are exposed or covered with small pieces of a special shape. For this reason, this method requires manual cleaning of the side surface of the ink fountain or manual replacement of small pieces for the cover, which also requires considerable manual work by the operator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in a printing machine such as an offset printing machine or a letterpress printing machine, it is easy to remove residual ink on the inner surface of an ink fountain when changing items. It is an object of the present invention to provide an ink fountain device for a printing press which can be cleaned easily and can be easily automated.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a base roller and a base roller disposed close to the base roller.
An ink fountain main body forming an ink fountain bottom surface, an ink key provided at a lower end of the ink fountain bottom surface and capable of adjusting a gap between the ink fountain main body, and an ink fountain provided at both ends of the ink fountain main body. In an ink fountain device having an ink fountain side plate forming a side surface, a long protective film having a width capable of covering the upper surface of the ink fountain main body and the ink fountain side plates on both sides thereof is pulled out from the protective film supply roll, and an ink key is provided. While passing through so as to cover the bottom and side surfaces of the ink fountain, the portion of the protective film that was located in the ink fountain is drawn out of the ink fountain, and a new film drawn out of the protective film supply roll. Protective film transport device for traveling so that the part is located above the ink fountain, and at least the ink fountain side plate And an ink fountain side plate driving device that moves to a retracted position that is lower than the operating position and does not interfere with the travel of the protective film, and a protective film that is sent above the ink fountain side plate, A heating means for heating so as to soften a portion sandwiched between the ink fountain side plate and the original roller is provided, and the ink fountain side plate is located at the retracted position, and a new portion of the protective film is provided above the ink fountain side plate. When the ink fountain side plate is moved from the retracted position to the operating position in the state where the ink fountain side plate is located, the ink fountain side plate moves while stretching a portion of the protective film that contacts the ink fountain side plate, and moves between the original roller and the ink fountain side plate. And a portion in the vicinity thereof is deformed so as to cover the inner surface of the ink fountain side plate.

In the ink fountain device having the above-described structure, the protective film covers the bottom surface of the ink fountain and the side surface of the ink fountain during normal printing to protect the ink fountain from being stained with ink. The side plate driving device moves the ink fountain side plate to the retracted position, and in this state, the protective film transport device runs the protective film, pulls out the portion of the protective film that has covered the ink fountain inner surface, and replaces the new portion with the ink fountain. The ink fountain side plate driving device raises the ink fountain side plate to the original operating position, and the ink fountain side plate is lifted while stretching a portion of the protective film that comes into contact with the ink fountain side plate, and lifts up with the original roller. And a portion in the vicinity thereof is deformed so as to cover the inner surface of the ink fountain side plate. Thus, the bottom of the ink fountain and the side surface of the ink fountain are covered by the new portion of the protective film, so that the ink fountain can be prepared for the next printing operation.

Here, it is preferable that the heating means has a heating member provided at an end of the ink fountain side plate facing the original roller. With this configuration, when the ink fountain side plate at the retracted position is turned to the operating position, the portion of the protective film that is in contact with the heating member can be quickly heated and softened. The ink fountain side plate may be sandwiched between the side plate and the original roller, and may be positioned to cover the inner surface of the ink fountain side plate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention shown in the drawings will be described below. FIG. 1 is a schematic cross-sectional view showing an essential part of an ink device provided with an ink fountain device according to an embodiment of the present invention provided in an offset printing machine or letterpress printing machine, and FIG. 2 is a schematic side view of the ink fountain device. , FIG. 3 is a schematic plan view of the ink fountain device, and FIGS. 4 (a), (b), and (c) are schematic perspective views showing the ink fountain device in different operating states, respectively, and FIGS. b), (c) and (d) are respectively
It is a schematic sectional view or a side view showing the ink fountain device in different operation states. 1 to 5, reference numeral 1 denotes a frame of a printing unit, 2 denotes an ink fountain device (to be described in detail later), 3 denotes an original roller constituting a part of the ink fountain device 2, 4 denotes a call roller, and 5 denotes ink kneading. Rollers, which constitute an inking device for supplying ink to a plate cylinder (not shown).

The ink fountain device 2 includes an original roller 3, an ink fountain main body 7 which is disposed close to the original roller 3 and forms a flat ink fountain bottom surface 7 a, and the ink fountain main body 7 having an ink fountain bottom surface 7 a. A plurality of ink keys 8 provided at the lower end and capable of adjusting the gap with the original roller 3, ink key adjusting rods 9 for adjusting the positions of the ink keys 8, and provided at both ends of the ink fountain body 7 And an ink fountain side plate 10 forming an ink fountain side surface 10a. The ink fountain side plate 10 has an arc-shaped end surface 10b pressed against the outer peripheral surface of the original roller 3 to prevent ink leakage. Further, as shown in FIG. 6, a heating member 10c is provided on the arc-shaped end face 10b of the ink fountain side plate 10.
Is provided. The heating member 10c constitutes a heating means for heating and softening the protective film. Here, an electric heating type hot plate is used. As shown in FIG. 7, a heating member 10c is attached to the end face of the ink fountain side plate 10.
In addition to the above, a heating member 10d made of an electrothermal heating plate may be similarly provided on the upper surface.

In FIG. 1 to FIG.
Are mounted so as to be in contact with the outer surfaces 7b at both ends of the ink fountain body 7 and to be rotatable about the support shaft 11, and to be located at both ends of the ink fountain [FIG.
5 (a)] and a retreat position lower than that position, preferably lower than the ink fountain bottom surface 7a [FIG.
(B), the position shown in FIG. 5 (b)]. The ink fountain side plate 10 has an ink fountain side plate driving device (not shown) such as an air cylinder for reciprocating the ink fountain side plate 10 between the operating position and the retracted position.
Are connected.

As shown in FIG. 5A, the ink fountain main body 7 has an operating position where an ink fountain is formed together with the original roller 3;
As shown in FIG. 5B, the ink fountain is retracted below the operating position and is movably provided at a retracted position where the ink fountain bottom surface 7a is substantially horizontal. Further, a drive device (not shown) such as an air cylinder for reciprocating the ink fountain body 7 between the operating position and the retracted position is connected to the ink fountain body 7.

1 to 5, the ink fountain device 2 further comprises a long protective film 15 arranged to protect the inner surface of the ink fountain, a protective film supply roll 16 for feeding out the protective film 15, The protective film 15 drawn from the film supply roll 16 and passed through the ink key 8 so as to cover the inner surface of the ink fountain is drawn out, and the portion covering the inner surface of the ink fountain is pulled out, and a new portion is placed on the bottom of the ink fountain. There is provided a protective film transport device 17 to be moved so as to be located above. A brake mechanism is connected to the protection film supply roll 16 so that a desired tension can be applied to the protection film 15. The protective film transport device 17 is disposed downstream of the ink fountain main body 7, and has a guide roller 18 for guiding the protective film 15 and a winding roll 1 for winding up the protective film 15.
The take-up roll 19 is connected to a drive motor (not shown). Further, upstream of the take-up roll 19, a residual ink removing device 2 for scraping and removing residual ink 20 (see FIG. 5B) on the protective film 15.
1 is provided.

In FIG. 1 to FIG. 3, the protective film 15 fed from the protective film supply roll 16 has a constant width, and the width is wider than the outer surface interval of the ink fountain side plates 10 on both sides of the ink fountain main body 7. Therefore, when the protective film 15 is positioned above the ink fountain in a planar state, as shown in FIG. 4B, the protective film 15 is attached to the ink fountain main body 7 and both sides thereof. The ink fountain side plate 10 is now covered. 1 to 3, in a state where the protective film 15 is set so as to cover the inner surface of the ink fountain, a large portion 15a at the center covers the bottom surface 7a of the ink fountain, and side edge portions 15b on both sides correspond to the side surfaces 10a of the ink fountain. At the same time, the cover is partially inserted between the ink fountain side plate 10 and the original roller 3.

A guide roller 2 is provided on the transport path of the protective film 15 pulled out from the protective film supply roll 16.
3, a winding length measuring roller 24 pressed against the guide roller 23 and rotating as the protective film 15 travels is arranged, and connected to a rotary encoder 25. The rotary encoder 25 winds up the protective film 15 by the take-up roll 19, measures the feeding amount of the protective film 15 when feeding a new portion of the protective film 15 above the ink fountain, and determines a desired position of the protective film 15. It is provided so that the ink fountain can be correctly positioned above the bottom surface 7a. The positioning when the protective film 15 is wound up is not limited to the case where the winding length measuring roller 24 and the rotary encoder 25 are used, and can be changed as appropriate. For example, a small hole or a mark for sensor detection may be formed on the protective film 15. A method may be adopted in which a sensor is provided at a constant pitch and the sensor detection small hole or mark is detected by a photoelectric sensor arranged on the transport path of the protective film 15.

3 and 8, a cylindrical member 30 having an outer diameter substantially equal to the outer diameter of the original roller 3 is provided at both ends of the original roller 3 so as to be rotatable with respect to the original roller 3. Are arranged so that they can be stopped even if they rotate. At least a portion of the ink fountain side plate 10 which is in contact with the original roller 3 is formed thick so that the protective film 15 can be pressed against both the original roller 3 and the cylindrical member 30.

The material constituting the protective film 15 may be a soft resin which can be softened by heating. In particular, a nylon, polyethylene, polypropylene film or the like is preferable.
Further, since it is necessary to withstand friction, a material that does not easily expand at room temperature is preferable. The thickness of the protective film 15 is 100 to 200 μm in consideration of durability, flexibility, and the like.
It is preferable to set the degree.

As can be clearly understood from FIG. 5, the components (the supply roll 16, the guide roller 23, the guide roller 18, the winding roll 19, etc.) related to the protective film 15 are independent of the turning position of the ink fountain body 7. It always occupies a fixed position with respect to the ink fountain main body 7, in other words, is arranged so as to move together with the ink fountain main body. The other components except for the guide roll 18 do not necessarily need to be provided so as to move together with the ink fountain main body 7 and may be fixedly arranged at a fixed position.

Although not shown, a sequence controller for automatically performing the cleaning operation described below is provided.

Next, the operation of the ink fountain device 2 configured as described above will be described. At the time of normal printing, the ink fountain main body 7 and the ink fountain side plate 10 are shown in FIGS.
(A) Occupies the operating position shown in FIG.
Reference numeral 5 covers the inner surface of the ink fountain. That is, the protective film 15 covers the ink key 8, the ink fountain bottom surface 7a and the ink fountain side surface 10a, and a part of the protective film 15 is sandwiched between the ink fountain side plate 10, the original roller 3, and the cylindrical member 30 ( See FIG. 8). Printing is performed in this state. That is, in FIG. 1, the original roller 3 slowly rotates in the direction of the arrow, and the ink supplied into the ink fountain forms an ink film on the outer peripheral surface of the original roller 3, and the ink contacts the original roller 3. The ink is supplied to the inking roller 4 which has been moved to the position, and then the inking roller 4 is moved to a position where it contacts the inking roller 5 to transfer the ink to the inking roller 5.

During this operation, the ink fountain main body 7 and the ink fountain side plate 10 are not contaminated with ink because the inner surface of the ink fountain is covered with the protective film 15 as well as the bottom surface. In addition, since the original roller 3 rotates, the portion 15b of the protection film 15 sandwiched between the original roller 3 and the ink fountain side plate 10 may be pulled by the original roller 3, but this portion does not rotate. Since the cylindrical member 30 and the ink fountain side plate 10 are sandwiched and fixed, the protective film 15 does not move and cause trouble. In addition, even if the protective film 15 has good slipperiness and a part of the protective film 15 is not fixed by the cylindrical member 30 and the ink fountain side plate 10, a portion that comes into contact with the original roller 3 may be pulled by the original roller 3. When there is no, the cylindrical member 30 may be omitted.

When the ink fountain is to be washed after printing, the wash button of the sequence controller is pressed. Then
As shown in FIG. 5B, the ink fountain main body 7 is lowered to the retracted position and the ink fountain side plate 10 is also lowered to the retracted position, so that the protective film 15 can be wound up. In addition,
The protective film 15 can be wound up only when the ink fountain side plate 10 is lowered. However, when the ink fountain body 7 is also lowered, the winding-up force of the protective film 15 can be reduced, and the ink fountain bottom surface 7a is lowered. This is preferable because it becomes horizontal and discharge of the remaining ink 20 becomes easy.

Next, the take-up roll 19 rotates to wind up the protective film 15 by a predetermined amount, to take up a portion stained with the residual ink 20, and to move a new portion of the protective film 15 onto the ink fountain body 7. . The portion of the protective film drawn out above the ink fountain by this movement is simply flat over the entire width, but since the ink fountain side plate 10 is retracted downward, it interferes with the running of the protective film 15. I will not do it. Further, during the movement of the protective film 15, the residual ink 20 on the protective film 15 is scraped and removed by the residual ink removing device 21, so that a large amount of ink is entangled in the take-up roll 19 and causes trouble. That is prevented.

After the protective film 15 moves and stops,
As shown in FIG. 5C, the ink fountain main body 7 returns to the original operating position. The state at this time is the state shown in FIG.
Both side edges of the protective film 15 extend horizontally on both sides of the ink fountain bottom surface 7a, and are located above the ink fountain side plate 10. By this time, the heating member 10c provided on the ink fountain side plate 10 has been energized, and has been heated to a temperature at which the protective film 15 can be heated and softened. Next, in a state where the protective film 15 extending on the ink fountain main body 7 is stretched by applying an appropriate tension, the ink fountain side plate 10 turns upward, and the protective film 15 in contact with the heating member 10c at the end portion. Move while heating, softening and stretching, and bending the vicinity thereof upward.
As a result, the portion of the protective film 15 facing the end face 10b of the ink fountain side plate 10 is separated from the end face 10b by the original roller 3.
And a portion adjacent to the cylindrical member 30 is formed so as to cover the inner surface of the ink fountain side plate 10, that is, the ink fountain side surface 10a. Thus, the protective film 15 is stuck on the inner surface of the ink fountain (the bottom surface 7a of the ink fountain and the end surface 10a of the ink fountain), and the cleaning operation is completed. The operation of raising the ink fountain side plate 10 is as follows.
It may be performed simultaneously with or before the operation of raising the ink fountain main body 7, but it is desirable to raise the ink fountain main body 7 first in order to prevent the protection film 15 of the ink key portion from wrinkling.

As described above, the ink fountain cleaning operation is automatically performed, and the work load on the operator is greatly reduced. This ink fountain cleaning operation is performed simultaneously for a plurality of printing units provided in the printing press. Thus, cleaning of each ink fountain of the printing press can be easily performed in an extremely short time, and the downtime of the printing press can be reduced to improve productivity. Note that, in parallel with the ink fountain cleaning operation, a cleaning operation of other rollers of the inking device is also performed. After the end of the cleaning operation, supply ink to the ink fountain,
Enter the printing operation.

In the above embodiment, the ink fountain side plate 10 is used.
(Or the heating members 10c and 10d when the ink fountain side plate 10 shown in FIG. 7 is used)
Is used to heat and soften the protective film 15, but the present invention is not limited to this structure, and the heating member 10
In addition to heating by c, 10d, etc., other heating means, for example, hot air blowing, heating by a hot plate, etc. may be used in combination, or only heating by other heating means instead of heating by heating members 10c, 10d, etc. May be used. When another heating means is used, the heating area of the protective film 15 by the other heating means is preferably not only the area heated by the heating members 10c and 10d but also a relatively wide range including the vicinity thereof. The other heating means may be mounted at a position where a desired portion of the protective film 15 located above the ink fountain can be heated, or upstream of the ink fountain (between the ink key 8 and the supply roll 16). May be a position where the protective film 15 can be heated.

Further, in the above embodiment, the ink fountain side plate 10
Is swung upward to heat and soften a part of the protective film, stretch it and insert it between the original roller 3,
The protective film 15 extending on the ink fountain main body 7 is stretched with an appropriate tension so that the protective film 15
Of the ink fountain bottom surface 7a is restrained so as not to move. However, the method of restraining the portion of the protective film 15 on the ink fountain bottom surface 7a so as not to move is not limited to the method of applying tension to the protective film 15 as described above, and another appropriate method may be employed. . For example, when the ink fountain side plate 10 is swung upward and the protective film 15 is sandwiched between the original roller 3 and the protective film 15, the protective film 15 is pressed against the ink fountain bottom surface 7a with an appropriate member and restrained. For example, a method of causing vacuum suction to 7a and constraining it may be adopted.

In the above embodiment, as can be seen clearly from FIG.
9 is disposed so as to be pressed against the end of the roller surface and the cylindrical member 30. However, the present invention is not limited to this configuration.
It is also possible to change as shown in FIG. That is, as shown in FIG. 9, the ink fountain side plate 10A is pressed against the end face 3a of the original roller 3, and the end face of the ink fountain side plate 10A is pressed against the outer peripheral surface of the small-diameter cylindrical member 30A provided at the end of the original roller 3. A configuration may also be adopted in which a part of the protective film 15 is inserted between the ink fountain side plate 10A, the original roller 3, and the cylindrical member 30A.

In the above embodiment, the ink fountain side plate 10 is used.
Is provided so as to be pivotable about the support shaft 11 and is moved to an operation position located at both ends of the ink fountain and a retracted position lower than the operating position. However, the movement of the ink fountain side plate 10 is not necessarily limited to the swiveling method. Alternatively, a slide method may be used. FIG. 10 shows an embodiment in that case with the ink fountain side plate 10 retracted.
Are arranged so as to move from the operation position shown in FIG. 4 (a) to the retracted position shown in FIG. The ink fountain side plate driving device (not shown) such as an air cylinder for reciprocating the reciprocating device 10 between an operating position and a retracted position is connected. Other configurations are the same as those of the embodiment shown in FIGS. In the embodiment shown in FIG. 10 as well, except that the ink fountain side plate 10 moves linearly, the winding-up of the protective film 15 and the molding of the protective film 15 are performed by the same procedure as that shown in FIGS. The manual ink fountain cleaning operation that has been performed can be omitted.

Further, in the above embodiment, the ink fountain side plate 10
Is movable with respect to the ink fountain main body 7, but the present invention is not limited to this configuration, and the ink fountain side plate 10 may be fixed to the ink fountain main body 7 and moved together with the ink fountain main body 7. it can. FIG. 11 shows an embodiment in that case, in which the ink fountain main body 7 and the ink fountain side plate 10 have an integral structure. Further, the guide roller 18, the take-up roll 19, and the like located downstream of the ink fountain main body 7 are arranged at fixed positions regardless of the rotation of the ink fountain main body 7.
In this embodiment, as shown in FIG. 11B, the ink fountain main body 7 and the ink fountain side plate 10 pivot from the operation state shown in FIG. 11A to the lower retracted position.
As shown in FIG. 1 (c), the protective film 15 is wound up. Thereafter, as shown in FIG. 11 (d), the ink fountain body 7 and the ink fountain side plate 10 pivot upward to return to the original operating position. Returning, the both side edges of the protective film 15 can be heated and softened and stretched, sandwiched between the original roller 3 and the ink fountain side plate 10, and the vicinity thereof can be attached to the inner surface of the ink side plate. In this embodiment, since there is no need to move the ink fountain side plate 10 with respect to the ink fountain main body 7, there is an advantage that it can be easily applied to an existing ink fountain device.

In each of the above embodiments, the protective film 1
The take-up roll 19 is used as the protective film transport device 17 for traveling the
Is not limited to this configuration, and can be changed as appropriate. For example, a drive roller and a pressing roller for pinching and transporting the protective film 15 are provided downstream of the residual ink removing device 21 so that the protective film travels, and the discharged protective film is discharged to a box-shaped discharge film receiver. What should I do?

[0032]

As described above, the present invention relates to an ink fountain device in which a long protective film having a width capable of covering the upper surface of the ink fountain main body and the ink fountain side plates on both sides of the ink fountain is provided from the protective film supply roll. Pull out and pass through the ink fountain so as to cover the bottom and side surfaces of the ink fountain, and the portion of the protective film that was located in the ink fountain is pulled out of the ink fountain and pulled out of the protective film supply roll. A protective film transport device for traveling so that the new portion is located above the ink fountain, an operating position where at least the ink fountain side plate acts as a side surface of the ink fountain, and a lower position than the operating position; An ink fountain side plate driving device for moving the ink fountain side plate to a retracted position which does not interfere with traveling; and a protection filter sent above the ink fountain side plate. A heating means for heating so as to soften a portion sandwiched between the ink fountain side plate and the original roller of the ink fountain, the ink fountain side plate is located at the retracted position, and a new protective film is provided above the ink fountain side plate. When the ink fountain side plate is moved from the retracted position to the operating position in a state where the proper roller is positioned, the ink fountain side plate moves while stretching the portion of the protective film that contacts the ink fountain side plate, and the original roller is moved. And a portion in the vicinity thereof is deformed so as to cover the inner surface of the ink fountain side plate, so that during normal printing, the protective film covers the ink fountain bottom surface and the ink fountain side surface, and is covered with ink. It is protected from dirt, and when washing for color change,
The ink fountain side plate driving device moves the ink fountain side plate to the retracted position, and in this state, the protective film transport device runs the protective film, pulls out the portion of the protective film covering the ink fountain inner surface, and removes a new portion. The ink fountain side plate driving device raises the ink fountain side plate to the original operating position, and the ink fountain side plate is lifted while stretching the portion of the protective film that contacts the ink fountain side plate. It can be sandwiched between the rollers and the vicinity thereof can be deformed so as to cover the inner surface of the ink fountain side plate, so that the bottom of the ink fountain and the side surface of the ink fountain can be covered with a new portion of the protective film. In other words, the ink fountain can be cleaned, and the ink fountain cleaning operation that has been performed manually in the past can be reduced. Can reduce downtime of the printing machine, it has an effect of improving the productivity. Further, since the protective film used here may be simply a fixed width, there is also an effect that it is not necessary to previously process the protective film into a shape suitable for mounting on the inner surface of the ink fountain.

Here, if the heating means has a heating member provided at the end of the ink fountain side plate facing the original roller, the ink fountain side plate at the retracted position is turned to the operating position. In this case, the portion of the protective film that is in contact with the heating member can be quickly heated and softened, so that the protective film is well sandwiched between the ink fountain side plate and the original roller and covers the inner surface of the ink fountain side plate. The effect that the position can be set is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a main part of an ink device having an ink fountain device according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the ink fountain device.

FIG. 3 is a schematic plan view of the ink fountain device.

FIGS. 4A, 4B and 4C are schematic perspective views showing the ink fountain device in different operating states, respectively.

FIG. 5 (a), (b), (c), (d)
A schematic sectional view or side view showing the ink fountain device in different operating states.

FIG. 6 is a schematic perspective view of an ink fountain side plate used in the above embodiment.

FIG. 7 is a schematic perspective view showing a modified example of the ink fountain side plate.

FIG. 8 is a schematic perspective view showing the vicinity of an end of the original roller in the embodiment.

FIG. 9 is a schematic perspective view showing the vicinity of an end portion of an original roller according to another embodiment of the present invention.

FIG. 10 is a schematic perspective view showing another embodiment of the present invention.

FIG. 11 shows still another embodiment of the present invention.
(A), (b), (c), (d) are schematic side views showing different operating states, respectively.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Printing unit frame 2 Ink fountain device 3 Source roller 4 Recall roller 5 Ink fountain roller 7 Ink fountain body 7a Ink fountain bottom 8 Ink key 9 Ink key adjustment rod 10 Ink fountain side plate 10a Ink fountain side surface 10b Ink fountain side plate end surface 10c, 10d Heating member 11 Support shaft 15 Protective film 16 Protective film supply roll 17, 17A Protective film transport device 18, 23 Guide roller 19 Winding roll 20 Residual ink 21 Residual ink removing device 30 Cylindrical member

Claims (2)

[Claims] 1. A base roller, an ink fountain body disposed close to the base roller and forming an ink fountain bottom surface, and provided at a lower end of the ink fountain bottom surface to adjust a gap between the base roller and the base roller. A possible ink key, an ink fountain side plate provided at both ends of the ink fountain body and forming ink fountain side surfaces, and a long protective film having a width capable of covering the upper surface of the ink fountain body and the ink fountain side plates on both sides thereof. A protective film drawn out from the protective film supply roll and passed through an ink key to cover the bottom and side surfaces of the ink fountain, and a portion of the protective film covering the inner surface of the ink fountain is disposed outside the ink fountain. Protective film transport for running the protective film so that a new part drawn out from the protective film supply roll is positioned above the ink fountain. Feeding device, at least the ink fountain side plate, an operating position acting as a side of the ink fountain, an ink fountain side plate driving device for moving to a retracted position lower than the operating position and not interfering with the traveling of the protective film,
Heating means is provided for heating the protective film fed above the ink fountain side plate to soften a portion sandwiched between the ink fountain side plate and the original roller, wherein the ink fountain side plate is located at a retracted position. When the ink fountain side plate is moved from the retracted position to the operating position in a state where a new portion of the protective film is located above the ink fountain side plate, the portion where the ink fountain side plate comes into contact with the ink fountain side plate of the protective film is removed. An ink fountain device for a printing press, wherein the ink fountain device is configured to be moved while being stretched and sandwiched between the original roller and a portion in the vicinity thereof is deformed so as to cover an inner surface of the ink fountain side plate. 2. The method according to claim 1, wherein the heating unit is configured to:
2. The ink fountain device for a printing press according to claim 1, further comprising a heating member provided at an end facing the original roller.