JPH047983Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to an ink replenishing device used in printing machines that use ink ribbons, or devices that reapply ink to ink ribbons whose ink content has decreased. be.

[Conventional technology]

Although the printing life of the ink ribbon base material has been significantly extended due to improvements in the printing mechanism, such as lower printing pressure and improved fiber strength, the current situation where the amount of information processing is increasing means that the ink is used up quickly. This trend can be seen. Not only is the ink ribbon wasted, but the time and expense required to replace the ink ribbon is a considerable burden.

Therefore, in order to extend the life of the ink ribbon, there are two methods: one is to replenish ink while using the ink ribbon, and the other is to stop using the ink ribbon, remove it from the equipment, and reapply ink using an ink applicator. It is broadly divided into methods. The latter of these methods, reapplying ink to an ink ribbon using ink coating, requires removing the ink ribbon from the equipment in use and controlling the amount of ink picked up by the ink coating machine. This is out of the question because the structure of the parts is complicated, precision is required, handling is troublesome and costs are high, and the former method of replenishing ink while using an ink ribbon is desired. The former method includes an ink roll system (a drive roll or driven roll for feeding the ink ribbon directly serves as an ink roll, or an ink roll is provided so that it is further in contact with these drive rolls or driven rolls). Ink replenishment method), JP-A-53-4618, JP-A-54-120020
However, in the ink roll method, most of the ink is not consumed until its lifespan is reached, and the ink replenishing device is used. In this case, when the ink level in the container changes due to changes in atmospheric pressure or replenishment, the amount of ink held decreases, and the height of the ink surface inside the container changes, the amount of ink supplied also changes, ensuring that a constant amount of ink is stably supplied to the ink ribbon. Furthermore, both the ink roll method and the methods using the various ink replenishment devices described above have the disadvantage that
Ink replenishment, which replenishes ink to the ink ribbon and this ink ribbon, not only while the ink ribbon is in use, but also when the ink ribbon is not in use, that is, when the ink ribbon has stopped circulating. Since the ink ribbon remains in contact with the roll, excessive ink will adhere to the part of the ink ribbon that is in contact with the roll while it is stopped. The ink would stain the printed surface.

[Problem to be solved by the invention] For these reasons, this invention is able to maintain a constant amount of ink even if the amount of ink held decreases with use and the height of the ink surface inside the container changes. The purpose of this invention is to provide an ink replenishing device that can stably supply ink to the ink ribbon, prevent excessive ink from being applied to the ink ribbon when the device is not in use, and prevent the print surface from being smudged due to excessive ink adhering to the device. It is what was done.

[Means for Solving the Problems] This invention to achieve the above-mentioned object is to provide an inner wall 2 inside the container 1, and divide the inside of the container 1 into a large volume ink reservoir 3 and a small volume ink reservoir 4. partition,
A communication port 7 is provided between the tip 5 of the inner wall 2 and the container wall 6 to communicate the large volume ink reservoir 3 and the small volume ink reservoir 4, and the container wall 9 of the large volume ink reservoir 3 is provided with: A small hole 8 is provided for ventilation with the outside air, and an ink supply body 12 made of felt or foam rubber made of a material having a structure through which ink can pass is fitted into one end of the container wall 11 of the small volume ink reservoir 4. A rotary support shaft hole 13 is provided at the other end of the container wall 11, through which a shaft 17 is inserted.
When in use, the container 1 is rotated and laid down about the shaft 17, and the inner wall 2 separates the ink in the large volume ink reservoir 3 and the small volume ink in the ink reservoir 4, and the communication port 7 is opened. The supply body 12 contacts the ink transfer roll 14 or the ink ribbon 15 and transfers ink from the small volume ink reservoir 4 to the ink supply body 1.
2 to the ink transfer roll 14 or ink ribbon 15. When not in use, the ink supply body 12 is rotated upright about the shaft 17 as a fulcrum to separate the ink supply body 12 from the ink transfer roll 14 or ink ribbon 15. 3 ink to communication port 7
This is an ink replenishing device for an ink ribbon in which ink flows into a small volume ink reservoir 4 through the ink reservoir 4 and replenishes the ink reservoir 4 with ink.

[Example] Next, an example of the implementation of this invention will be explained with reference to the accompanying drawings. FIG. 1 is a perspective view of an ink reinforcing device for an ink ribbon showing an example of implementation of this invention, and FIG. It is a vertical side view taken along the line A-A of the product, showing the state when not in use, and Figure 3 is the second
4 and 5 are longitudinal sectional side views respectively showing other embodiments of this invention in use when the device is rotated and laid down. It is. In the figure, 1 is a container, and 2 is an inner wall provided inside the container 1. This inner wall 2 allows the inside of the container 1 to have a large volume ink reservoir 3.
The ink reservoir 4 is partitioned into a small volume ink reservoir 4, and a communication port 7 is provided between the tip 5 and the container wall 6 to communicate the ink reservoir 3 and the ink reservoir 4. 8 is a small hole provided in the container wall 9 of the large volume ink reservoir 3 for ventilation with the outside air, and 10 is a notch provided in the container wall 11 of the small volume ink reservoir 4. An ink supply body 12 made of felt or foam rubber made of a material having a structure through which ink can pass is fitted into the notch 10. Reference numeral 13 denotes a rotation support shaft hole, and the container 1 rotates about a shaft 17 inserted through the rotation support shaft hole 13 as a fulcrum. Further, 14 is an ink transfer roll, and 15 is an ink ribbon. Note that 16 is a protective plate provided near the small hole 8 for ventilation with the outside air, and prevents the small hole 8 from becoming clogged by ink splashes in the ink reservoir 3 due to rotation of the container 1. It is effective in preventing Further, a sealable ink supply port may be provided near the small hole 8, or a cap may be provided on the small hole 8 or the ink supply body 12.

When this ink replenishing device is in use, the container 1 is rotated and laid down about a shaft 17 as shown in FIG. The communication port 7 is opened at the same time. By rotating and lowering the container 1, the ink supply body 12 is brought into contact with the ink transfer roll 14, and the ink from the small volume ink reservoir 4 is supplied to the ink transfer roll 14 through the ink supply body 12, and the ink ribbon Apply to 15.
When a device such as a printing machine is in use, ink is applied to the ink ribbon 15 in this state, so the ink in the small volume ink reservoir 4 is gradually consumed and the amount decreases, but as long as this state remains Ink from the large volume ink reservoir 3 is not replenished to the small volume ink reservoir 4.

The one in Figure 4 has a straight inner wall 2 to partition the ink reservoirs 3 and 4, and the one in Figure 5 has a straight inner wall 2.
The ink reservoirs 3 and 4 are separated by a curved line.

Now, when the printer stops working, the printer rotates this container 1 to the position shown in Figure 2, and the ink supply body 12 is separated from the ink transfer roll 14, and the large volume ink reservoir is opened. 3 and the small volume ink reservoir 4 communicate with each other through the communication port 7.
As the container 1 rises, the ink supply body 12 separates from the ink transfer roll 14, so the supply of ink from the ink supply body 12 is cut off, and ink is excessively supplied to the ink transfer roll. part does not exist. Next, to resume printing from the work stoppage state shown in Figure 2, the printer must
When the ink supply body 12 is rotated to the position shown in FIG. 3, the ink supply body 12 comes into contact with the ink transfer roll 14, and the supply of ink from the ink supply body 12 to the ink transfer roll 14 is started. Due to this change in the position of the container, the ink in the large volume ink reservoir 3 flows into the small volume ink reservoir 4 through the communication port 7 and fills the ink reservoir 4, which plays the role of replenishing the ink reservoir 4 with ink. Therefore, whenever the position of the container changes, ink is refilled from the large volume ink reservoir 3 to the small volume ink reservoir 4, and the container as a whole holds a considerable amount of ink. However, since the small volume ink reservoir 4 in which the ink supply body 12 is located holds only the amount of ink corresponding to the volume of this ink reservoir, the amount of ink supplied to the ink transfer roll 14 through the ink supply body 12 is almost constant. This is because the influence of pressure changes due to changes in the total amount of ink in the container is kept extremely small. This ink replenishing device is not only used by being built into equipment, but also can be used as a simple ink coating device when the ink ribbon is temporarily removed from the printing machine and ink is reapplied.

[Effects of the device] As explained in detail above, this device uses an inner wall to partition the inside of the container into a large volume ink reservoir and a small volume ink reservoir, and both ink reservoirs are connected to the tip of the inner wall and the container wall. The space between them is used as a communication port, and the large volume ink reservoir has small holes in the container wall for ventilation with outside air.
One end of the container wall of the small volume ink reservoir is provided with a notch into which an ink supply body made of felt or foam rubber made of a material having a structure through which ink can pass, and a rotation support is provided at the other end of the container wall. A shaft hole is provided and a shaft is inserted through it. When in use, the container rotates around the shaft and lies down, and the inner wall divides the ink into a large volume ink reservoir and a small volume ink reservoir. The ink supply body contacts the ink transfer roll or ink ribbon, and supplies ink from a small volume of ink reservoir to the ink transfer roll or ink ribbon through the ink supply body, and rotates about the shaft when not in use. Stand up and
This is an ink replenishing device for an ink ribbon that separates an ink supply body from an ink transfer roll or an ink ribbon, allows ink from a large volume ink reservoir to flow into a small volume ink reservoir through a communication port, and replenishes ink to this ink reservoir. As a result, the following effects can be obtained. In other words, conventional replenishment devices can be used, for example, while the equipment is being stored after use,
Even when the ink supply device is temporarily stopped, the ink supply body of the ink replenishment device remains in contact with the ink transfer roll, ink ribbon, etc., so the transfer roll The ink oozes out and becomes overcoated, and the ink ribbon also receives excess ink from the transfer roll, resulting in an unevenly coated surface and the printing paper being contaminated by this area. However, with the ink replenishing device of this invention, even if the device is used continuously,
The ink ribbon can now be coated with a uniform surface. Furthermore, the container is divided into a large volume ink reservoir and a small volume ink reservoir by the inner wall, and an ink supply body is provided in the small volume ink reservoir, so the container as a whole can hold a large amount of ink. However, since only the amount of ink in the small volume ink reservoir is in contact with the ink supply body in use, the weight of ink added to the ink supply body is only the amount of ink in the small volume ink reservoir. Therefore, the influence of pressure changes due to changes in the amount of ink on the ink supply body can be made extremely small, and the amount of ink supplied from the ink supply body can be stabilized. Also, as the position of the container changes due to the use and stoppage of equipment, the ink in the large-volume ink fountain and the ink in the small-volume ink fountain mix with each other. When standing up, the ink from the large volume ink reservoir enters the small volume ink reservoir where the ink supply body is located, replenishing the small volume ink reservoir, so the amount of ink maintained in the small volume ink reservoir is , it is possible to stably maintain a constant amount of ink, so a constant amount of ink can be constantly supplied to the ink supply body.
As a result, it became possible to constantly supply a constant amount of ink to the ink ribbon.

[Brief explanation of the drawing]

The attached drawings are for explaining this idea.
Fig. 1 is a perspective view showing an example of the implementation of this invention, Fig. 2 is a vertical side view taken along line A-A of Fig. 1, and Fig. 3 is a state in which the Fig. 2 is rotated and laid down. FIGS. 4 and 5 are longitudinal side views showing other embodiments of the invention, respectively. 1...Container, 2...Inner wall, 3...Large volume ink reservoir, 4...Small volume ink reservoir, 5...Tip of inner wall, 6...Container wall, 7...Communication port, 8... small hole,
9... Container wall of large volume ink reservoir, 10... Notch opening, 11... Container wall of small volume ink reservoir, 12...
... Ink supply body, 13 ... Rotation support shaft hole,
17... Axis.

Claims (1)

[Scope of utility model registration request] An inner wall 2 is provided inside the container 1 to partition the inside of the container 1 into a large volume ink reservoir 3 and a small volume ink reservoir 4, and a space between the tip 5 of the inner wall 2 and the container wall 6 is provided with a large volume ink reservoir. A communication port 7 communicates between the reservoir 3 and the small volume ink reservoir 4, and a container wall 9 of the large volume ink reservoir 3 is provided.
is provided with a small hole 8 for ventilation with outside air, and one end of the container wall 11 of the small volume ink reservoir 4 is provided with an ink supply body made of felt or foam rubber made of a material having a structure through which ink can pass. A rotary support shaft hole 13 is provided at the other end of the container wall 11, through which a shaft 17 is inserted.When in use, the container 1 can be rotated about the shaft 17 as a fulcrum. Then, the ink in the large volume ink reservoir 3 and the ink in the small volume ink reservoir 4 are separated by the inner wall 2, and the communication port 7 is opened.
The ink in the small volume ink reservoir 4 is supplied to the ink transfer roll 14 or the ink ribbon 15 through the ink supply body 12, and when not in use, the shaft 1
The ink supply body 12 is rotated upright using 7 as a fulcrum.
Ink transfer roll 14 or ink ribbon 1
5, and the ink from the large volume ink reservoir 3 flows into the small volume ink reservoir 4 through the communication port 7,
An ink replenishing device for an ink ribbon that replenishes ink to this ink reservoir 4.