JPH02245370A - Stamp base - Google Patents

Abstract

PURPOSE: To obtain a stamp pad for allocating an ink to a printer by disposing an ink pad and an ink chamber so that the ink pad is disposed at least partly in the chamber, and holding it so that the ink is directly absorbed from an ink layer adjacent to the ink layer. CONSTITUTION: An ink cartridge 200 has an ink tank 41 and a stamp pad 34. And, the stamp pad 34 holds an ink pad 36 in an ink distribution chamber 204. The pad 36 is made of an elastic absorbing material to absorb the ink contained in the chamber 204. The pad 36 is slightly compressed in the case of bringing into contact with an inking unit to transfer the ink to the inking unit. When the compression is released, an additional amount of the ink is absorbed to an upper part of the pad 36. Preferably, the pad 36 absorbs the ink by a capillarity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stamp pad for a printing device of a printing press, particularly a mailing machine.

[Prior Art and Problems] In the field of postal processing, it is highly desirable to print stamps and other indicia on seals, parcels, tape, etc. at high speeds, especially when large quantities of mail are printed in this way. It is important to maintain the quality of the printed stamp or indicia.

OBJECTS AND EFFECTS OF THE INVENTION An object of the present invention is to provide an improved stamp pad, particularly for use in inking machines of printing presses.

Another object of the invention is to provide a stamp pad that includes a significant ink storage in addition to the ink already contained in the ink pad of the stamp pad.

Another object of the invention is to provide a stamp pad capable of dispensing ink to a printing press rapidly enough to enable high speed movement of the printing press.

Another object of the present invention is to provide an ink stamp pad for a printing press that can be replenished with ink while the printing press is in operation.

Another object of the invention is an improved stamp pad, especially for inking of a printing press, and its ink pump and/or -
We provide the following tank.

Another object of the present invention is to provide a stamp pad that includes an ink tank and/or an ink pump.

Another object of the present invention is to provide a stamp pad that is partially or wholly disposable.

Another object of the invention is to provide a stamp pad for a particularly high speed postage meter printing press.

Another object of the invention is to move the stamp pad or its ink pad-containing member from a home position to an inking position, in which position the ink pad of the stamp pad is mounted on a particularly high-speed drive device in abutment against a printing press. We provide stamp pads that can do a lot of things.

Another object of the present invention is to provide the stamp pad according to the above item, which can be refilled with ink while the drive is in operation while being attached to the drive.

Another object of the invention is to move the stamp pad or its ink pad-containing member in two directions, for example horizontally and vertically, from a home position to an inking position, in which the ink pad of the stamp pad is moved. To provide a stamp stand that can be attached to a particularly high-speed drive device that comes into contact with a printing press.

The foregoing and other objects of the present invention include an ink pad and an ink chamber for holding the ink to be transferred to the ink pad, i.e. the ink chamber contains ink already received in the ink pad. This is accomplished by a stamp pad adapted to hold additional ink.

The ink chamber and ink pad are arranged at least partially adjacent an ink layer in the ink chamber and configured to absorb ink directly from the ink layer when the ink pad is installed in the stamp pad. .

In a particularly preferred embodiment, the ink chamber includes a plurality of partitions therein defining a plurality of channels for holding ink, and the ink pad is at least partially disposed within the ink chamber and connected to the partitions. in contact with and adjacent to said channels to absorb ink in said channels. The ink chamber includes structure defining a manifold adjacent to and communicating with each ink channel.

In a preferred embodiment, the ink pad consists of one or more layers of material that contact the ink layer and absorb the ink.

According to another embodiment of the invention, an inlet is provided in the ink chamber for supplying ink to the ink chamber. Preferably, an outlet from the ink chamber is also provided for removing excess ink that has accumulated in the ink chamber.

According to another embodiment of the invention, the stamp pad includes an ink tank, in particular the ink chamber and the ink tank are fixed to each other so as to form a unit. Therefore, when the ink pad, ink chamber, and ink tank are mounted on the stamp base, they are moved as a unit from the home position to the inking position. Preferably, the ink pad/ink chamber/ink tank unit constitutes a disposable unit, ie it is configured to be disposable. In other embodiments, the ink pad and ink chamber are coupled as a disposable unit and the ink tank is provided separately.

According to another embodiment of the invention, the stamp pad includes an ink pump; in a preferred embodiment, the ink chamber and the ink pump are secured to each other as a unit. The ink pad, ink chamber and ink pump are therefore moved as a unit from the home position to the mounting position when mounted on the stamp base.

Preferably the ink bud/ink chamber/ink pump unit is a disposable unit. In another embodiment, the ink tank and the ink pump are connected as a unit and are reused when the ink tank is empty;
Also, the ink chamber is provided separately. In this embodiment, only the ink chamber (and ink pad) is moved from the home position to the inking position.

Preferably the ink chamber and ink pad form a disposable unit.

According to another embodiment of the invention, the stamp pad includes an ink tank and an ink pump, and in certain embodiments the ink chamber, the ink tank, and the ink pump are fixed to each other to form a unit. . Thus, when the ink pad, ink chamber, ink tank and ink pump are mounted on the stamp base, they are moved as a unit from the home position to the inker position. Preferably, the ink pad/ink chamber/ink tank/ink pump unit is constructed as a disposable unit.

In another embodiment, the stamp pad includes a cartridge that includes an ink tank as an integral part and a tray that includes an ink chamber and is secured to the cartridge. In yet other embodiments, the ink tank forms a separate part from the ink chamber.

[Embodiment] Referring to FIGS. 1 and 2, the inker module 25 includes a frame 30 that houses a drive 32, which drives (a) a stamp pad 34 (FIG. 2); Drive the ink pad 36 from the home position (Fig. 2) to the inking position (Fig. 7).
(Fig. 2) is brought into contact with the printing device 38 (Fig. 2) to apply ink to the printing device 38, and (b) pump 40 (light 2)
) is activated to pump ink into the tank 41 in the stamp pad 34.
from there into the ink pad 36. Also frame 3
0 houses a drive 42 that raises a platen assembly 44 (FIG. 2) from a home position (FIG. 2) upwardly to a printing position (FIG. 118) in which a seal or tape strip 46 is placed. is printing device 3
8 to print a stamp on it. The printing device 38 forms part of a flatbed postage meter 47 (FIG. 2) which is pivotally mounted within the system including the inker module 25 by a counterweight mechanism 48.

At the rear end 52 of each side 50 (FIG. 2) of the stamp pad 34, against the ends 54,55 of the links 58, 57,
These links are connected by fitting the inner protruding pins 59 into the recesses 61 (FIG. 18) of the stamp pad 34. The front part 63 of the stamp pad 34 is connected to the link 7, respectively.
0, pin 6 protruding inwardly from the end 67.88 of 71
5 (FIG. 1). Such a fitting structure facilitates replacement of the stamp pad 34, as described in detail below. Since the platform 72 is fixed relative to the frame 3°, the links 56,57 are movable relative to this plant form. The bottle 65 is the stamp pad 34
(FIG. 18) so that the stamp pad 34 rests on this pin 65 and links 58 against the plant form 72.
, 57. platform 72
are fixed to the side plates 73, 74 of the frame 30 by screws 75, so that the plant form can be easily removed for assembly, disassembly, or maintenance of the drives 32 and 42. Link 70.71 is its central part 7
7 is pivotally connected to the plant form 72 by pin 79, so that the end of these links 70, 71 @6
7.68 pivots upwards (clockwise) relative to platform 72. Movement of links 56 and 57 to the left in FIG. 1 causes stamp pad 34 to be moved horizontally with respect to platform 72, and clockwise movement of links 70, 71 causes stamp pad 34 to be moved vertically upward.

The drive 32 moves the links 56 and 57 to the left in the order of FIGS.
6) horizontally. The drive 32 then pivots the links 70, 71 (FIG. 7) to move the stamp pad 34 vertically upward and press the stamp pad 34 against the printing device 38 for inking. After the drive 42 raises the platen assembly 44 to crimp the envelope or tape strip 46 to the printing assembly 38Iζ, the drive 32 lowers the links 70, 71 and links 58.
57 returns the stamp pad 34 to its home position by moving in the direction opposite to the movement that brought the stamp pad 34 to the inked position.

The drive 32 (FIG. 3) includes a drive motor 85 and a camshaft 9 pivotally supported by side plates 72 and 73 of the frame 30.
Cam wheels 87 and 88 fixed to the motor shaft 9
3 and a pulley system 92 connecting the camshaft 90, the links 70.71 have rollers 94 rotatably connected to their respective lower ends 96 and are supported by frame side plates 72.73. , each roller 94 abuts on a respective cam wheel 87,88. Spring 95 connects links 70 and 71 to cam wheel 87
．． 88, causing rollers 94 to engage their respective cam wheels. Links 56 and 57 connect at their respective ends 100 to the corresponding ends 10 of links 104 and 105.
It is pivoted to 2. These links 104, 105 connect to the frame side plates 73, 74 at their respective ends 107.
These links also have a roller 109 rotatably connected to their central portion 110. Link 5
6 and 57 are rotatably connected to a roller 112 at their respective central portions. The spring 113 is the link 56
, 57 towards the cam wheels 87.88, causing their rollers 112 to engage with these cam wheels 87.88. The cam wheels 87 , 88 each have a cam surface 114 that abuts the roller 94 , a cam surface 115 that abuts the roller 109 , and a cam surface 116 that abuts the roller 112 . Links 56, 104 and links 57, 105 are interconnected and supported such that their respective rollers abut as cam followers on the cam surfaces of cam wheels 87 and 88. These cam surfaces move their respective links upon rotation of the camshaft 90 to produce the movement of the stamp pad 34 shown in FIG. or aligned circumferentially along the outer periphery of the cam wheels 87, 88, respectively. The cam wheels 87,88 are rotated at a constant speed or at a continuously variable speed during a cycle, or they can be oscillated during a cycle.

Figure 1~! In Figure 3, drive 42 is attached to frame 3.
A motor 118 having a motor shaft 119 supported by bearings 120 from the side plates 73 and 74 of 0, a gear 122 fixed to the shaft 119, a gear 123 meshed with and driven by the gear 122, and a motor 123 fixed to the gear 123. A shaft 124 supported by a bearing 125 from the frame 13
, a pinion 126 fixed to this shaft 124, and a corresponding pinion 1 fixed to the opposite side of the platen device 44.
When motor 118 is actuated, including rack 127 (FIG. 2) engaged with pinion 126, pinion 126 rotates and
The corresponding rack 127 is engaged and raised, and the platen device 44 is raised together with it. 4-8 illustrate the upward movement of the platen device 44 in response to the movement of the stamp pad 34.

Links 57 perform some orthogonal movement (e.g., vertical movement) to produce linear (e.g., horizontal) and parallel (e.g., movement parallel to the stamp surface of printing device 38) movement of stamp pad 34. The link 105 and the corresponding cam surface must cooperate with the link 57 to produce this movement. Furthermore, the cam surface associated with ring 105 undergoes orthogonal (vertical) movement during the crimping movement of the ink pad.

The interrelationship between the movement of the stamp pad and the rotation of the camshaft 90 is illustrated in FIG. Figure 9a shows the horizontal movement of the stamp pad versus time. FIG. 9b shows the vertical movement of the stamp pad versus time, and FIG. 9C shows the camshaft rotation angle versus time. Since the time scales of the abscissas in these figures are the same, comparing Figures 9a and/or 9b with Figure 9c reveals the horizontal and/or vertical movement of the stamp pad relative to the angle of rotation of the camshaft. Can be seen.

Figures 10a, 10b and 10c are graphs similar to the graph of Figure 9, but with the stamp pad movement on the extended side immediately before, during and immediately after the stamp pad contacts the printing device. It shows the relationship with the camshaft rotation angle and also provides other additional information. The cam profile is such that there is a jump-free contact of the ink pad 36 against the printing device 38, i.e. once the ink pad 36 is in contact with the printing device 3.
8 and starts its downward movement, the printing device 38
It is formed so as to prevent it from coming into contact with it again. Further, FIG. 10 shows the vertical height of the stamp stand and the permissible limit of the stamp height. The cam profile is also shaped to provide smooth acceleration and deceleration.

As previously discussed, drive 32 operates pump 40;
Ink is pumped from the ink tank 41 into the ink pad 36. Referring to FIG. A roller 140 is rotatably connected to link end 136 and link 130 is configured and supported such that roller 140 abuts as a cam follower against cam surface 142. Rotation of cam wheel 88 causes link 130
pivots and the link end 138 compresses the pump 40 to create a pumping action as described below. This pump 40 is compressed each time the ink pad 36 comes into contact with the printing press 38.
Alternatively, it is compressed less than once or more than once depending on the required amount of ink. In the illustrated embodiment, pump 40 is compressed once per ink pad impingement. pump 40
It is preferred that the pump material begin to be compressed just before contact with the ink pad 36 and be compressed for the majority of the contact time, so that in high speed operation the pump material has time to return to its original shape before the next compression. It is preferable to pump the inked product only once during the cycle.

FIGS. 11-17 show links 57, 57 and 57 at the time when inking is shown as a percentage of the cycle on each side.
71, 105, 130 and rollers 96, 109, 112
, 140, the cam wheel 88, the stamp stand 34,
FIG. 11 shows the relative positions of the printing device 38, the platen device t44, and the pump 40, and shows the positions of each member in the home position of the stamp pad 34.
00% or 0%), and FIG. 17 shows the position of each member when the stamp pad 34 is at its maximum height (approximately 30% of the cycle) and the inked mark is in contact with the printing device.

In each figure, the time corresponding to the time on the abscissa in FIGS. 9 and 10 is displayed. The coordinate system is shown at the top of FIGS. 11-17, with the abscissa 175 indicating the horizontal or rxJ position of the stamp pad and the ordinate 179 indicating the vertical or "y" position of the stamp pad; The origin is 18
3. In FIG. 11, the links and rollers (followers) are shown relative to their motion control axes. In FIGS. 11 to 17, the cam wheel 8
A diameter 90 of a circle indicating the number 8 and a diameter 93 of a circle indicating the axis of the motor 85 indicate the rotational relationship between the cam wheel 88 and the motor shaft 93 and the positional relationship between each link and the roller at the time of the cycle.

Also, as the ink pad 36 moves along the
．． 210 inches), produces a wiping action on the printing device,
This improves ink transfer. This operation is described as "alpha scrap" in the accompanying figures. The Al7 ask scrap ratio is 4:1.

That is, for a yN movement of 0.060 inches, 0.01
It is a 5 inch xN motion. Each reference point is indicated by line order.

18 and 19, ink cartridge 200 includes an ink tank 41 and a stamp pad 34 that retains an ink pad 36 within an ink distribution chamber 204. Referring to FIGS. Ink swab 36 is comprised of a resilient absorbent material and absorbs ink contained within ink distribution chamber 204 . When the ink pad 36 comes into contact with the ink device 38, it is slightly compressed.
The ink is transferred to this inking device. When this compression is released, an additional amount of ink is absorbed into the top of the ink swab 36. Preferably, the ink pad 36 absorbs ink by capillary action.

When using a high-speed mailer, the stamp pad 34 is configured to transfer the ink to the printing device 38 four or more times per second, which reduces the time it takes for the ink to be absorbed by the ink bud 36, and the time it takes to absorb the ink. The transfer time to the printing press 38 is limited. Regarding Figures 9 and 910, each inking cycle is about 0.25 including rest time.
seconds (250m5), approximately 160 seconds excluding downtime.
It is m5. Approximately 2511 S is required for contact. Ink ejection to printing device 38 must therefore occur within 25+ms. Also, the amount of ink replenishment is approximately 225 m.
The pump 40 is compressed for about 80s+s and the ink should be absorbed into the upper part of the ink bud 36 within 5 seconds, and the pump 40 is compressed for about 80s+s,
The illustrated stamp pad 34 and pump 40, which must be released between m5, must take into account such limitations.

The illustrated ink pad 36 (FIGS. 18 and 19) is single layer or multilayer. This embodiment has a two-layer structure of an upper layer 36a and a lower layer 36b. The upper layer 36a acts as a metering layer for metering the amount of ink transferred during contact with the printing device 38, and the lower layer 36b acts as a replenishment layer for replenishing the amount of ink ejected from the upper layer 38a. The upper layer 36a has a smaller average pore diameter than the lower layer 36b, which facilitates ink transfer from the ink distribution chamber 204 to the lower layer 36b and from the lower layer 36b to the upper layer 36a.
Ink transfer to the ink bud is carried out by capillary action and internal negative pressure in the ink bud. During the abutting action, the upper layer 36a is slightly compressed, and this compression and decompression of the upper layer 36a results in a constant ink transfer from the lower layer 36b to the upper layer 36a. The material used for the ink pad 36 depends on the ink used. For example, if a dispersed ink is used, the upper layer 38a and the lower layer 38b may have a thickness of 20 (upper limit) to 8 (
Scotto felt foam laminate (lower limit) hardness (lower limit)
If a solution-based ink is used, the upper layer 36a is polyethylene laminated with a so-called rPorexJ type medium (sintered polyethylene), i.e. a web-like heat-activated adhesive, and the lower layer 38b is an olefin-based material such as neoprene. It can be used as a material.

1813i11 and 1!19, the ink distribution chamber 204 has an inlet 206 and an optional outlet z
08. It has a number of channels 210 formed therein by partitions 202 and a manifold 214 communicating with the channels 210. The ink bud 36 is connected to the channel 210 of the partition 212 and the manifold 214.
is supported in communication with and absorbs ink present in channels 210 and manifold 214. Partition 2
The height of 12 is selected to suitably transfer the maximum amount of ink required during printing. Regarding the above ink,
This height is approximately 0.030 inches.

Although channels 210 are illustrated as extending parallel to one another and having similar sizes, they are not limited thereto and may have any other suitable shape for supplying ink to ink pad 36. .

The piping system 216 shown in FIG.
18 is in communication with the inlet 206 of the ink distribution chamber 204 .

In some applications, it is desirable to remove excess ink to prevent ink overflow and splashing during high speed operation and to ensure sufficient ink supply. The amount of ink used varies depending on the printing area (with or without the Atslogan, changes in the Atslogan design, etc.). If the stamp pad 34 is used in such an application, the ink distribution chamber 204 may optionally include an outlet 208 and the ink tank 41 may include an inlet 220. Outlet 2 of ink distribution chamber 204
o8 and the ink tank inlet 220 are connected by a pipe 222, which can be closed if necessary. tank 41
can be provided with an outlet (not shown) in its support 226, which is directly connected to the inlet 224 of the pump 4o without a valve or the like.

The ink flow is exactly as shown. Pump 4o injects ink from tank 41 through pump outlet 218, tube 216 and inlet 206 into ink distribution chamber 204. Optionally, excess ink in ink distribution chamber 204 that is not absorbed by ink pad 36 is returned to tank 41 through ink distribution chamber outlet 208, tube 222 and tank inlet 220. The outlet 208 is connected at a suitable height to the ink distribution chamber 204 so that excess ink returns to the tank 41 primarily by gravity and to some extent by the pumping action of the pump 40. A second pump (not shown) can be used to return excess ink to tank 41 if desired.

Pump 40 (FIG. 21) consists of a resilient sleeve or tube 230 that can be repeatedly compressed and returned to its original shape. Inside this sleeve 230, there is a suction valve 232 and a discharge valve 2.
34 are arranged. These valves 234 are one-way valves that allow wall flow from the tank (41 in FIG. 18) into the sleeve 230 and from the sleeve 230 into the ink distribution chamber 204. Ink tank 41 (
18 and 19) includes an abutment surface 235.

A sleeve 230 is crimped against this abutment surface by the distal end 38 (FIG. 2) of the link 130. Compression of sleeve 230 by link 130 results in valve 232 being closed and valve 234 being opened. When this compression is released, a partial vacuum is created within the sleeve 230, which closes the valve 234 and opens the valve 232, drawing an additional amount of ink into the sleeve 230. Valves 234 and 232 operate as ball valves but are located entirely within sleeve 230. In a preferred embodiment, valves 232 and 234
is a duckbill valve, which not only places valves 232, 234 completely within sleeve 230, but also allows pump 4
0 can be operated in any position.

In the illustrated embodiment, the pump 40 is arranged horizontally. In a preferred embodiment, sleeve 230 has a diameter of approximately 578 inches, a length of approximately 2 inches, and is compressed approximately 1/8 inch.

The particular application in which pump 40 is used will depend on the nature of the fluid being pumped, the nature of the environment in which it will be used, its lifespan, cost,
It is necessary to consider maintainability, etc.

In the illustrated embodiment, sleeve 230 includes (a)
(b) capable of withstanding repeated compression-recovery cycles of hundreds to hundreds of gallons to provide pumping action for the desired period of use of the pump; (C) Made of an elastic material that can return to its original shape in a fraction of a second, i.e. can perform at least four pump cycles per second. The wall thickness of the sleeve 230 affects its usage period and recovery time.

The thicker the wall, the shorter the recovery time to the original shape, but the sleeve 230
The stress applied to the product increases and the service life is shortened.

- By way of example, the sleeve 40 may be comprised of an olefinic material such as neoprene, silicone rubber, polyethylene or polypropylene, with a preferred wall thickness of approximately 1716 inches, and the duckbill valve may also be an olefinic material such as neoprene. Other parts that come into contact with the ink as well (for ink capabilities) are also constructed of materials that are not reactive with the ink used. Sleeve 23
The conical system mounting on both ends of 0 is 236, 238 (No. 21
It is connected to the tank 41 by strongly fitting it onto the top of the tank 41 (Fig.) and making it tightly adhered by means of adhesive, heat shrinkage, etc.

18 and 19, the ink cartridge 20
0 (including stamp stand 34 and pump 40), tank 41, ink pad holder 202 (including ink distribution chamber 204 and ink pad 36), and pump 4
It can be provided as a disposable cartridge unit containing 0. Such cartridges may be provided sealed with foil or plastic to preserve their integrity for storage, transportation, handling and setup;
Because of the fitting structure of the stamp pad 34 as described above, the cartridge can be easily installed. The cartridge 200 has fingers 240 that can be engaged to cause the cartridge 200 to be inserted into and mated with the inker module 200. Although each part of stamp pad 34 and cartridge 200 can be replaced individually if desired, it is preferable to replace them as a unit.

In the other embodiment illustrated in FIGS. 20 and 21,
Cartridge 200 includes a stamp pad 34A and an ink pad holder 202A that includes an ink distribution chamber 204A. Cartridge 200 does not include an ink tank,
A separate large tank 250 is provided. Ink pad holder 202A is similarly constructed and similarly mounted as ink pad holder 202 described above, and ink distribution chamber 204A is similar to ink distribution chamber 204 described above. Platform 72A is similar in structure to platform 72 described above and is similarly mounted, but with tank 250
is horizontal to the eye of this platform 72A,
That is, it is vertically arranged and passes through the hole 252. The ink pad holder 202A is attached to the platform 7 in the same way as the stamp pad 34 and the plant form 72 described above.
Can move against 2A. Ink tank 250
is received in a container 254, which is attached to the bottom 256 of the frame 30A by a flange 257. If you remove the stamp pad 34A, the tank 25
0 can be easily taken in and out of the container 254.

Pump 40 passes through hole 261 in container 254 to tank 25.
0 bottom 260. This pump 40 is the 18th
It is arranged horizontally, similar to the embodiment of Figures 1 and 19.

Drive 32A includes link 130 and cam wheel 8
7 includes a link 130A supported in engagement with a cam wheel 87A so that the distal end 138A of this link compresses the sleeve 230 of the pump 40. This is similar to the drive 3 link 130 and cam wheel 87 described above. The discharge port of the pump 40 is the pipe 2
Inlet 20 of ink distribution chamber 204A by 16A
6A, and the outlet of ink distribution chamber 204A is connected to boat 262 of tank 250 by tube 222A. Boat 262 is suction port 2 of pump 4o
Connect to 24.

The stamp pad 34A, the tank 250, and the pump 4o are connected to the tank 250 as in the embodiments of FIGS. 18 and 19.
The excess ink from the ink distribution chamber 204A is circulated to the tank 250.

In the embodiment shown in Figures 20rR and 3121, the tank 250 and pump 40 can each be replaced separately from the stamp pad 34A. As with the stamp pad 34, the stamp pad 34A can be easily replaced. Stamp pad 34A! Evacuation tube 216A.

After removing 222A, tank 250 is exposed and can be easily lifted out of container 254 and replaced, then tube 2
Connect 16A and 222A and install new tank 250 into container 2.
It can be placed in 54. If necessary, container 254
° Tank 250 and pump 40 can be replaced with a new unit.

In those embodiments that include the ink pump 40, the ink distribution chamber 20 is used to initialize the system before starting the actual printing operation each time the stamp pad is replaced.
4. It is necessary to pump a certain amount of ink into the 204A.

To synchronize the aforementioned operation of drives 32 (32A) and 4B and pump 40, the control system described in the above-mentioned patent application Ser.

The present invention is not limited to the above description, and can be modified or implemented as desired within the scope of the spirit thereof. It will also be apparent to those skilled in the art that the present invention could easily be used in other applications than mail dispatchers.

[Brief explanation of drawings]

FIG. 1 is a front perspective view of a drive according to the invention for moving a stamp pad from the Baum position to the inking position in a mailing machine, and FIG. 2 shows the stamp pad in the Baum position, the ink pad pump, the printing device, and the home. A sectional view of the drive of FIG. 1 showing the platen device in position, FIG. ff3 is a front perspective view of the drive shown in FIG. Figures 5 to 7 are cutaway side views showing the stamp pad and platen device at their home positions. 1!18 is a cross-sectional view similar to No. 4 A showing the moving stage and showing the ink pad in contact with the printing device and the platen device in the home position in FIG. 7;
The figure is a cross-sectional view similar to Figure 4, showing the stamp pad in its home position and the platen device in the printing position, with the envelope or tape in contact with the printing device. Figure 9 shows the stamp pad in its home position. Graphs consisting of FIGS. 9a, 9b and 9c showing the interrelationships of the horizontal position and vertical position of the stamp pad and the rotation angle of the stamp pad drive cam, respectively, with respect to the movement time from to the inking position; FIG. 10 consists of a JLLOA diagram, FIG. 10B, and FIG. 10C, which show the horizontal position, vertical position, and drive cam of the stamp pad, respectively, showing the movement of the stamp pad immediately before, during, and immediately after contact with the printing device. Graphs showing the mutual relationship of the rotation angles of the shafts, Figures 11 to 17, show the relative positions of the drive link, ink pump link, and drive camshaft during the cycle, and the movement of the stamp pad from its home position to its ink cartridge. is a stick diagram showing the cycle completion % when moving to position, j1181m is an ink pad according to the invention,
FIG. 19 is an exploded perspective view of the assembly of FIGS. 1 and 18. FIG. 1120 shows another embodiment of the present invention, and shows a stamp pad including an ink tank and operating a pump. A sectional view showing the drive part, again!
FIG. 21 is a sectional view showing the tank and pump along the line 21--21 in FIG. 20. 34.34^61. Stamp pad, 3B-, ink pad, 40. . , pump, 41.1. Ink tank, Zoo...
Cartridge, 202. ,,Holder, 204,
, ink chamber 250 , ink tank 2
54, , container, 257. -, base. Attorney Yamakuni Sato-Yu Procedural Amendment (Method) Relationship with the case of the person amending the name of the invention with a stamp stand

Claims (1)

Claims: 1. An ink pad made of an ink-absorbing material and an ink chamber for retaining ink, wherein the ink pad and the ink chamber are arranged such that the ink pad is at least partially connected to the ink chamber. placed inside,
A stamp pad characterized by being held adjacent to an ink layer so as to directly absorb ink from the ink layer. 2. The stamp pad according to claim 1, wherein the ink pad and the ink chamber are configured to be disposable. 3. The ink chamber includes a plurality of partitions therein defining a plurality of channels for holding ink, and the ink pad is at least partially written in the ink chamber and contacts the partitions, The stamp pad according to claim 1, characterized in that the ink in the channel is absorbed adjacent to the channel. 4. The stamp pad according to claim 1, further comprising an inlet of the ink chamber for supplying ink to the ink chamber. 5. The stamp pad according to claim 4, further comprising an outlet from the ink chamber for discharging excess ink accumulated in the ink chamber. 6. an ink pad comprising an ink-absorbing material and an ink chamber for retaining ink, the ink pad being at least partially written within the ink chamber for absorbing ink therein; A stamp pad comprising a tank and means for communicating the tank with the ink chamber for supplying ink from the tank to the ink chamber. 7. The stamp pad according to claim 6, wherein the ink chamber and the tank are interconnected to form a unit. 8. The stamp pad according to claim 7, wherein the ink chamber tank unit is configured as a disposable unit. 9. The stamp pad of claim 6, further comprising means for communicating said ink chamber with said tank for draining excess ink from said ink chamber and returning to said tank. 10. An ink pad made of a material that absorbs ink;
an ink chamber for retaining ink, the ink pad being disposed at least partially within the ink chamber for absorbing ink therein; a stamp pad including means for interconnecting the tank, the pump, and the ink chamber for supplying ink to the stamp pad. 11. The stamp pad according to claim 10, wherein the ink chamber, the ink pad, and the ink pump are fixed to each other to form a unit. 12. The stamp pad according to claim 11, wherein the ink pad-ink chamber-ink pump unit is constructed as a disposable type. 13. The stamp pad according to claim 10, wherein the ink tank and the ink pump are fixed to each other so as to form a unit. 14. The stamp pad according to claim 10, further comprising means for communicating the ink chamber with the pump and/or the tank for removing excess ink from the ink chamber into the pump and/or the tank. 15. An ink pad made of a material that absorbs ink;
an ink chamber for retaining ink, the ink pad being disposed at least partially within the ink chamber for absorbing ink therein, and a base having the ink chamber mounted thereon; and means for communicating the tank with the ink chamber for supplying ink from the tank to the ink chamber. 16. Claim 1, wherein the ink chamber and the base are fixed to each other so as to form a unit.
The stamp pad described in 5. 17. The stamp pad of claim 16, wherein the ink chamber and the base are configured to form a disposable unit. 18. The stamp pad of claim 15, further comprising means for communicating the ink chamber with the tank for discharging excess ink from the ink chamber into the tank. 19. an ink pad comprising an ink-absorbing material; an ink chamber for retaining ink, the ink pad being at least partially disposed within the ink chamber for absorbing ink; a base to which an ink chamber is attached; an ink tank integral with the base; an ink pump fixed to the base; and means for communicating with each other. 20. The ink pump includes a deformable chamber and a valve member, and when the deformable chamber is compressed, the ink inside the deformable chamber is pushed out and supplied to the ink chamber, and when the compression is released, the ink is transferred from the tank to the inside of the pump. 20. The stamp pad according to claim 19, wherein the stamp pad is sucked by. 21. The stamp pad according to claim 19, further comprising means for securing the ink chamber to the base to form a unit including the ink chamber, the tank, and the pump. 22. The stamp pad of claim 21, wherein the unit is configured as a disposable structure. 23. The stamp pad according to claim 19, further comprising means for communicating the ink chamber with the pump or the tank for returning excess ink from the ink chamber to the pump or the tank.