JPS6123410Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic seal stamp equipped with an ink cartridge.

Automatic seals that do not require ink stamps and can be stamped continuously are already in widespread use. However, their structure is such that ink is simply stored in a porous printed body, and there is no separate means for automatically replenishing the printed body with ink. Therefore, in this method, whenever the ink in the print body runs out, it is necessary to frequently and tediously replenish the ink. Moreover, immediately after replenishing ink, there was an excess of ink and the impression remained sticky, and then there was a lack of ink, which caused the impression to become blurry, making it difficult to adjust the amount of ink to be just the right amount.

Therefore, this idea was inspired by the ink supply system of fountain pens, and it has a built-in ink cartridge that automatically supplies ink to the porous printing material, thereby simplifying the troublesome ink replenishment process. The purpose is to make it possible.

A further object of this invention is to ensure that the amount of ink contained in the porous printed body is kept constant to ensure that it does not become sticky or blurred when pressed.

The details of this invention will be explained below based on an illustrated embodiment.

In FIG. 1, 1 is a cylindrical body. A thick porous printed body 3 is fixed to the large diameter portion 2 at the lower end of this. This printing body 3 is made of a rubber material or a plastic material having countless continuous pores, and by laminating two members one above the other and changing the porosity and pore diameter of the upper layer 3a and the lower layer 3b as appropriate, the ink in the upper layer 3a is Passage resistance and lower layer 3b
It is different from that of .

An outer cylinder 4 is fitted onto the outer periphery of the cylinder 1 via a rotation preventing means 5. A retaining ring 6 fitted onto the upper part of the cylinder body 1 is brought into contact with the upper end of the outer cylinder 4 to prevent the outer cylinder 4 from slipping upward. Then, a compression spring 7 is interposed between the cylindrical body 1 and the outer cylinder 4, and the spring 7 pushes the outer cylinder 4 upward to integrate the two cylinders 1 and 4.

A sheath 9 is fitted onto the large-diameter lower end portion 2 of the cylinder 1 so as to be able to move up and down, and the spring 7 pushes down the sheath 9.
Then, the lower end of the sheath 9 is connected to the lower end printing surface 10 of the printing body 3.
Make it protrude slightly downward.

As a means for supplying ink to the printing body 3, an ink cartridge 11 is prepared which is fitted into the upper part of the cylinder 1, and an ink cartridge 11 is provided which is fitted into the upper part of the cylinder 1. Ink flow rate adjuster 1
Incorporate 4. The through hole 12 is opened in a part of the circumference of the cylindrical body 1 covered by the outer cylinder 4, and is opened through a gap formed between the inner periphery of the lower end of the outer cylinder 4 and the outer periphery of the upper end of the sheath 9. It is said to be in communication with the atmosphere.

As shown in FIGS. 2 and 3, the ink flow rate regulator 14 has a center hole 15 extending vertically through it.
It has a structure in which a large number of fins 16 are protruded from the outer periphery with very small gaps 17, and several vertical grooves 19 are provided from the outer periphery of these fins 16 to the center hole 15. This ink flow rate regulator 14 is inserted and fixed into the empty chamber 13 via the upper and lower abutment flanges 18, 18, and in this assembled state, its lower end is connected to the center of the upper surface of the upper layer 3a of the printed body 3. , the upper end of which protrudes into an ink cartridge 11 that is fitted into the cylinder 1 and is connected to the ink cartridge 11 for communication.

Note that a cylindrical cap 20 is provided at the top of the outer cylinder 4.
The cap 20 is designed to cover the outer periphery of the ink cartridge 11.

In such cases, the procedure for using the automatic seal stamp on merits and its functions are as follows.

First, when the printing body 3 is not in use, the printing surface 10 of the printing body 3 is inside and above the lower end of the sheath 9, and the printing surface 10 does not come into contact with other objects. Therefore, there is no chance of staining other objects due to ink adhesion. Furthermore, if necessary, a separate cap is applied to the printing surface 10.

When stamping, hold the cap 20 in your hand and press the lower end onto the paper surface. First, the sheath 9 comes into contact with the paper surface, but this sheath 9 is pushed up against the compression spring 7, and the printed surface 10 of the printed body 3 comes into contact with the paper surface.

Now, the supply of ink to the printing body 3 and then to its printing surface 10 is as follows. A cavity 13 in the cylinder 1 that accommodates the ink flow rate regulator 14 communicates with the atmosphere through the through hole 12, and exchange air is passed through the vertical groove 19 of the regulator 14 and the central hole 15 to the ink cartridge. Enter 11. As a result, the ink in the ink cartridge 11 is
The liquid flows down the center hole 15 and collects in the gap 17 between the fins 16 on the outer periphery of the hole. Then, the printed body 3 is reached. However, the porous printed body 3 has the ability to sufficiently absorb ink and has permeability.
The upper layer 3a of the printed body 3 is filled with ink, which permeates into the lower layer, oozes out onto the printed surface 10 at the lower end, and is held by surface tension.

In addition to the large amount of ink flow regulator 14, the upper layer 3a of the printing body 3 acts as an ink passage resistance, and due to the passage resistance of the lower layer 3b and the surface tension of the lower circumferential surface, the amount of ink refilled to the printing surface 10 is limited. , which is kept constant with no excess or deficiency, to prevent the impression from becoming sticky due to too much ink or from blurring due to insufficient ink. At this time, if the upper layer 3a of the printed body 3 is made of a material having a relatively large ink passage resistance and has a smaller pore diameter than, for example, the pore diameter of the lower layer 3b, the ink flow rate regulator 14 can be used as the upper layer 3a of the lower layer 3b. Even if the ink transfers too much, the ink passage resistance of the upper layer 3a can suppress the excessive ink transfer. In this case, it is suitable for small-sized stamps. On the other hand, if the upper layer 3a of the printed body 3 is made of a material having a pore diameter larger than that of the lower layer 3b and having low ink passage resistance, the ink will not be sufficiently transferred from the ink flow rate regulator 14 to the lower layer 3b. It can be prevented. In this case, it is suitable for large-sized stamps.

As a matter of course, when ink is consumed from the printing surface 10, the ink flows out from the ink cartridge 11 by the ink consumption amount onto the printing body 3 via the ink flow rate regulator 14 without dripping by the inflow of exchange air. That is, at this time, the ink cartridge 11
Even if the internal pressure or temperature rises rapidly, the ink is temporarily stored in the gap 17 of the ink flow rate regulator 14, so that it can be prevented from excessively flowing out onto the print body 3. When the ink cartridge 11 becomes empty, the cap 20 is removed and replaced with a new ink cartridge 11 prepared as a spare. Alternatively, the original ink cartridge 11 may be refilled with ink using a dropper not shown.

As explained above, according to this invention, the ink in the ink cartridge 11 is supplied to the porous printed body 3 via the ink flow rate regulator 14 without dropping any drops. Moreover, since the lower end of the ink flow rate regulator 14 is connected to the lower layer 3b of the porous printed body 3 via the upper layer 3a which has an ink passage resistance different from that of the lower layer 3b, the ink flow rate regulator 14 The ink flow rate from the ink flow rate adjustment device 14 to the lower layer 3b can be precisely adjusted.
The flow rate of ink can be adjusted to a constant level without excess or deficiency, and continuous automatic printing can be performed while extremely effectively and reliably preventing stickiness due to excess ink or blurring due to insufficient ink on the printing surface 10.

In addition, a through hole 12 opened in a part of the circumference of the cylinder 1
is covered by the outer cylinder 4, so dust can enter through hole 1.
2, it is possible to prevent the ink from penetrating into the ink, and there is no fear that the through hole 12 will be blocked by the hand holding it during use, making it impossible to introduce the atmosphere, making it easy to use.

When not in use, the bottom printing surface 10 of the printing body 3 containing ink is placed inside the sheath 9 to prevent it from coming into contact with other objects, so you can leave it in an upright position without staining your desk or documents with ink. This makes it perfect as an automatic stamp. Furthermore, unlike the ink cartridge 11 filled with fibers, the ink cartridge 11 can be completely filled with ink, so the amount of ink it holds is sufficient, and the ink cartridge 11 can be refilled with ink. You won't have to get your hands dirty even in such situations. Furthermore, continuous automatic printing can be performed without any trouble until the ink in the ink cartridge 11 is completely used up. In addition, the work of inserting and connecting the ink cartridge 11 containing ink into the upper end of the ink flow rate regulator 14 can also be performed cleanly. Further, since the ink cartridge 11 is covered with a cap 20 which also serves as a grip, the ink cartridge 11 will not come off unexpectedly and the appearance is good.

[Brief explanation of the drawing]

Fig. 1 is a central vertical sectional view of the automatic stamp according to this invention, Fig. 2 is a front view of an ink flow rate regulator which is one of the constituent members of this invention, and Fig. 3 is a
It is an A-line sectional view. 1... Cylindrical body, 2... Large diameter portion at the lower end of 1, 3...
Porous printed body, 4... Outer cylinder, 7... Compression spring, 9
... Sheath, 10 ... 3 printing surface, 11 ... Ink cartridge, 12 ... Through hole, 13 ... Vacant room, 14
...Ink flow rate regulator, 15... Center hole, 16...
...Fin, 17...Gap, 19...Vertical groove, 20...
...cap.

Claims (1)

[Scope of utility model registration request] A cylinder 1 having a cavity 13 inside, a thick porous printed body 3 fixed to the lower end 2 of the cylinder 1 below the cavity 13, and a thick porous printed body 3 fitted and fixed to the outer periphery of the cylinder 1. an outer cylinder 4, a spring 7 interposed between the cylinder body 1 and the outer cylinder 4, and a spring 7 fitted onto the lower end portion 2 of the cylinder body 1 so as to be movable up and down to prevent it from coming off downward; It has a sheath 9 which is pressed down by a spring 7 and whose lower end protrudes slightly below the lower end printing surface 10 of the printed body 3, and a vertically oriented center hole 15. These fins 16 have vertical grooves 19 that protrude with a gap 17 from their outer periphery to the center hole 15, and are inserted and fixed into the cavity 13 in the cylinder 1, with the lower end of the fins 16 extending from the center of the upper surface of the printed body 3. An ink cartridge 11 is detachably inserted into the upper end of the ink flow regulator 14 so as to communicate with the center hole 15 of the ink flow regulator 14, and an ink cartridge 11 is detachably connected to the upper end of the outer cylinder 4. The cap 20 is fitted to cover the outer periphery of the ink cartridge 11, and the porous printed body 3 is composed of a laminate of an upper layer 3a and a lower layer 3b having different ink passage resistances. The lower end of the ink flow rate regulator 14 is connected to the center of the upper surface, and the printed surface 10 is formed on the lower end surface of the lower layer 3b, and a part of the circumference covered by the outer cylinder 4 of the cylinder 1 13 vacant rooms in
While opening the through hole 12 communicating with the outer cylinder 4
A gap is formed between the inner circumference of the lower end and the outer circumference of the upper end of the sheath 9 to allow the through hole 12 to communicate with the atmosphere.