JPS61179745A - Hot stamp printing method and device for base material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing method and a printing device that guarantee the ability to print variable data inexpensively and automatically and the permanence of printed matter.

SUMMARY OF THE INVENTION According to the invention, a substrate and a pigment layer which is transferable or transferable under contact pressure in heated conditions is provided on the side opposite or facing the surface of the substrate on which printing is to be carried out. The substrate and the blocking foil together with the blocking foil are fed through a stamping station where the substrate and the preheated blocking foil are heated between the pressure reaction member and the stamping part, material or printer. The pigment thereby forming the mark is transferred or transferred onto the substrate by the applied stamping force. The marks or patterns in this case are usually sequentially printed dots or letters. The pigment is at a temperature at which transfer or transfer occurs, usually just below its melting point.

In the stamping stage, the pigment-free surface of the blocking foil is preferably brought into contact with a pressure reaction member that heats the foil.

It is important that the blocking foil is preheated on its feed path just before reaching the stamping stage, while in the stamping station the unprinted back side of the substrate is guided into contact with a suitably heated pressure reaction member. It is to be. It is also desirable to heat the surface of the substrate that comes into contact with the pigment to prevent cooling, thereby reducing the tack or adhesive strength of the transferred or transferred pattern.

In the case of conventional hot stamp printing processes, the printing block is heated and pressed against the pigment-free surface of a blocking (barrier) foil, and the blocking foil is pressed through the substrate onto a pressure reaction member. However, the method of the present invention is the opposite. The heat required to transfer or transfer the pigment onto the substrate.

is introduced into the pigment layer by preheating and, if necessary, carries out the preheating via a heated pressure summer effecting member, so that the user is not bound to the design of the printer and can, for example, use a needle printing head or A heat-sensitive mechanism, such as a numerical wheel mechanism, can be used in place of or in addition to a conventional stereo plate.The advantages of hot stamping printing are retained, and the advantages of hot stamping printing are retained, while the advantages of needle printing are preserved. Added benefits.

A preferred apparatus for carrying out the method of the invention comprises, in a stamping station, a printing head arranged opposite a heated pressure reaction member, which is arranged on the side adjacent to the back side of the substrate. The heated pressure reaction member has a pressure-receiving surface and is further provided with an additional heating element in contact with the blocking foil at the stamping station.

Alternatively, the printer's force is applied to the unpigmented surface of the blocking foil, the substrate is maintained in contact with a pressure reaction member, the reaction member is optionally heated, and the heating element is moved to the stamping station. The blocking foil can be placed in contact with the blocking foil in an area up to .

ζThe essentially heat-sensitive printhead according to the invention now comprises:
I would like to emphasize that it has excellent functional applicability when the following points are taken into account. It took a dwell time of about 1/10 of a second to do so, whereas changing the stamping force at a dot pace using a printer according to the invention requires only a contact time of 1000 seconds.
Example 1 Referring to FIGS. 1 and 2, the substrate 10 to be printed is on the order of 1/1 second.
and a conventional barrier foil or stamping foil 20 are both sent to the stamping stage or area 50 at which the stamping or stamping station is located.
One side is defined by a pressure reaction member 40 in the form of a pressure beam or block, and the other side is defined by a patterning printer 50 having a needle mark-head or dot-forming printing head.

The substrate has an upper surface 12 and a lower surface 14 to be printed.

In this embodiment, the needle print head of the printer 50 is located on the underside 14 of the substrate 10 and the machine 7
Within the frame (not shown), it is possible to move mva in a direction transverse to the feed direction of the substrate in a path of movement indicated by arrow 52. The direction of feed of the substrate through the stamping stage 30 is indicated by arrow 16. The transport of the substrate 10 as well as the blocking foil 20 into the area of the stamping station 30 is briefly interrupted during the actual printing process.

On the side opposite the barrier or blocking foil 20 and facing the surface 12 of the substrate 10 is provided a conventional pigment layer 22 which can be transferred or transferred under contact pressure when heated sufficiently. A further blocking layer (not shown) is provided on top of the pigment layer B in a known manner, and a carrier foil is further provided thereon. The exposed surface of the carrier foil forms the surface of the blocking foil 20 opposite the pigment surface 22, and on the way to the stamping stage 3a, indicated by the reference numeral 24, the blocking foil is removed. 20 passes through the preheating area. In this embodiment, the heated area is the surface 24 of the blocking foil 20.
It consists of a heated metal plate 60 in contact with.

In the embodiment shown in FIG. 1, the metal plate 60 is constructed from a separate member. However, the metal plate 60
It is also possible for the pressure receiving S line portion to be connected to the pressure reaction member 40 in a heat transfer relationship or to be formed integrally with the pressure reaction member 40. In this case, the gap shown between members 60 and 40 is omitted.

The heating element or metal plate 60 is dimensioned such that the pigment layer is preheated across the entire range of the trajectory of movement 52 of the print head 50 in a direction transverse to the blocking foil feed direction 18 . In the direction of feeding of the blocking foil, the heating element 60 has the following length, taking into account its temperature:

That is, when the pigment reaches the pressure beam material 40, it is transferred cleanly from the blocking foil onto the substrate 10 when a stamping force is applied by the printer 50 in the form of dots or letters. It has such a length that it can be heated. Note that the base material 10 is also preferably heated in order to enhance the bonding of the pattern pigment.

In order to maintain the required temperature, a thermostatic type 111!16 (not shown) is provided in conjunction with the heating element 40 and the pressure-receiving or pressure-reacting member 40, and the entire heating area 60 and 40 It can be divided into regions at different temperatures.

2 is a side elevational view of the preferred embodiment of the hot stamping apparatus shown in FIG. 1; FIG.

In FIG. 2 as well as the other drawings, the mechanical frame, drive mechanism, and electrical/electronic devices are omitted for clarity of illustration. Such elements are well known in the art and are readily available to those skilled in the design and operation of printing machines and hot stamping equipment.

#! In Figure 2, the feeding direction 16 of the substrate 10 is from right to left. The substrate 10 is pulled from a stock reel supported on a machine frame (not shown) by a pair of transport rollers 62', 62' located downstream of the stamping station 30 in the feed direction. In this case, a pair of conveying rollers may be optionally provided in front of the stamping station in the feeding direction.

The substrate 10, which typically consists of a textile material or a meta-twisted plastic foil, is placed along and in contact with the slightly curved surface of the guide member 54 at the stamping station 54.
Introduced in front of 0. In this embodiment, the guide 54 is heated and its temperature is also thermostatically regulated.

Blocking foil 20 is drawn by a pair of transport rollers 64' and 64'' from a stock reel (not shown) supported on a machine frame or frame (not shown). After passing, the blocking foil 20 contacts a slightly curved surface 44 on the pressure reaction member 40 and is deflected at the edge of the surface 44 into the stamping stage 30 parallel to the substrate 10. At the end of the stamping stay 7W, the pressure reaction member or the deflection edge IM of the beam material 40 is moved.
42 and then in a direction substantially perpendicular to the feed direction 16 of the substrate 10 and away from the surface 46 of the pressure reaction member 40, another pair of transport rollers 66' and 66'
Run to.

This pair of rollers is also driven in the same manner as the other pairs of transport and feed rollers. Due to the orientation of the curved surface 44 relative to the position of the transport rollers 64' and 64' and the tensile force exerted by the further transport rollers 266' and 66'', the blocking foil 20 is brought into close contact with the curved surface 44 up to the deflection edge 42. It is held in this state and heated by the pressure reaction member 40.

As mentioned in connection with Figure 1, blocking foil 2
0 heating also takes place from its exposed surface 24.

As shown in FIG. 2, additional heating of the blocking foil 20 could be effected by radiation of heat from the surface 56 of the guide 54 to the pigment layer 22 on the blocking foil 20. The surface 56 forms, together with the surface 44, a V-shaped gap that tapers in the direction toward the stamping stain 7W.As a result, the distance between the pigment layer 22 and the surface 56 is reduced. This decrease causes an increase in the amount of radiant heat incident on the pigment layer 22 from the surface 56 until just before it reaches the stamping station 30. This amount of radiant heat not only changes the temperature of the guide 54, but also causes the guide 54 to It can be varied by being arranged on the machine frame so as to be able to move generally parallel to the feed direction 16. Furthermore, this adjustment of the amount of radiated heat can be varied by adjusting the "V" between surfaces 44 and 56. If you change the angle of the gap of the ``glyph'', you can use the machine frame or 7
This could be achieved by making the position of the guide 54 in the frame adjustable.

Blocking foil 20 in the area of pressure reaction member 40
heating causes an elongation of the blocking foil 20 in the feed direction 18. Nevertheless, in order to ensure that the blocking foil 20 always remains in tight contact with the pressure beam 40 and is guided without deflection as it passes the deflection edge 42, the transport rollers 66' and 6
The peripheral speed of 6' is set slightly higher than the peripheral speed of conveyor 4-264' and 64'. In practice, a circumferential velocity difference of about 15 arcs has been found to be adequate. Finally, the deflection edge 4
In connection with the importance of 2, attention is drawn to the fact that the deflection edge of 2 must be located as close as possible to the rear of the needle head of the printer 50 in the feed direction.

This is because the blocking foil 20 will be pulled away from the base material 10 immediately after the printer block 50 forms the printed mark or pattern. As a result, the possibility of the blocking foil sticking to the substrate in the area of the printed signage pattern or image is avoided, despite the fact that at this point the pigment is in a sufficiently soft state to stick. It will be done.

The embodiment described above is advantageously used when the printer block 50 used has a relatively high sensitivity to heat, even if the thickness of the substrate is not exceeded.

The embodiment shown in FIGS. 3 and 4 essentially differs from the first embodiment described above only in the following points. That is, the printer 50 for the substrate 10 and the blocking foil 20
and that the pressure receiving member 40 is reversed. In addition,
In the description of the second embodiment, the same reference numerals as in the first embodiment have been used as much as possible. Therefore, unless stated otherwise, it is unlikely that all of the matters described above will be understood to apply substantially or completely to the second embodiment.

In the second embodiment, as shown in FIGS. 3 and 4, the substrate to be printed is then transferred to the pressure receiving member 40 by the WJ 14.
In this position, it is guided through a stamping station 50 in the feed direction indicated by the reference numeral 16. The pressure receiving member in the second embodiment is schematically shown as a slab extending in the feed direction 16, which pressure receiving member can be heated and its temperature can also be adjusted in the thermostatic manner. As shown in FIG. 3, the slab-shaped pressure receiving member 40 terminates at the end of the stamping station 30 in the feed direction 16.

The blocking foil 20 is fed to the stamping station 30 at an angle (V), so that the blocking foil and the substrate meet for the first time immediately before or at the stamping station 30. The pigment layer 22 on the blocking foil 20 is located on the opposite side, ie facing the substrate 10 , and on the way to the stamping station 30 the exposed surface 24 of the blocking foil 20 is brought into contact with the heating element 70 . . The heating element 70 is arranged as close as possible to the stamping stage tube 30 to optimally heat the pushing foil from the stamping station 30 in a direction opposite to the direction of feeding of the blocking foil 20. It extends a sufficient distance to

The heating element 70 in contact with the blocking foil 20 is also provided with at least one cartridge-type heater, the heat output from which is thermostatically regulated.

In this embodiment, the stamping station 30 is defined by the last part of the pressure-receiving member 4o in the feed direction 16 and a printing block 50 located opposite this part. As shown in FIGS. 3 and 4, in this embodiment the stamping process is performed from the exposed surface 24 side of the blocking foil 2o. For example, the stamping force applied by the needles of the printer 50 forming the needle print head may pass through a very thin carrier foil as well as an also very thin stamp of the blocking foil 20 before reaching the pigment layer on the blocking foil. Tsuking layer (barrier layer)
The thickness and material of the substrate 10 on which printing is performed should be 1. It does not have any involvement in obtaining a quantitatively excellent printed image.

In order to avoid an interlayer in which the blocking foil 2o and the substrate 1° stick together after the printing process, the blocking foil 20 is also moved in the direction of movement within the stamping station 30 in the embodiment shown in FIGS. A sharp deflection is performed.

For this purpose, immediately following the stamping station 30 in the feed direction 16, a knife-shaped beam 80 is provided, the relatively sharp edges of which correspond to the deflection edges of the embodiment shown in FIG. Similar to section 42.

Figure 3 shows the basic arrangement of the different parts.
FIG. 4 shows, in simplified side elevation, the arrangement of the various elements of a preferred embodiment of the second embodiment.

The substrate 10 is pulled out from the stock reel by transport rollers 62' and 62'. First, the base material 10 is conveyed over the surface 43 located in the horizontal direction of the elongated pressure receiving member 40,
Next, it is fed downward so as to correspond to the illustrated position of the other surface 41 of the pressure receiving member 40 and passes through the stamping station 30 diagonally downward. The pressure receiving member 40 can also be heated in this embodiment. A pair of conveyances --
262' and 62' step-by-step draw out the substrate 10 as a stamping station 30. As already mentioned,
It is self-evident that the transport is interrupted during the actual printing process. The deflection of the direction of the travel path of the substrate 10 at the transition between the surfaces 4s and 41 of the pressure-receiving member 40 serves the purpose described below and furthermore
It functions to set the steady position of the base material. The blocking foil 20 coming from the stock reel is also passed through the stamping station 30 by two pairs of conveyors 264', 64' and 66', 66', a first pair of conveyors 64', 64'. and stamping station S
A heating element 70 is located between the heating element 70 and the heating element 70 having a curved surface 74 shown in contact with the surface 24 of the blocking foil 20 where no pigment layer is present. At the end of the heating element 70 adjacent to the stamping station 50, the heating element 70 is provided with a protrusion 72 so that the blocking foil 20 receives heat until just before reaching the stamping station 30. I can do it.

Printer 50, again in this embodiment, may take the form of a commercially available needle-dot printhead. This printer 5G is aligned so that its vertical axis is perpendicular to the surface E141 of the pressure receiving member 40. The head needle or needle is covered with blocking foil 2
Acting on the surface 24 without a pigment layer of 0. An oblique position of printing pull 50, as shown in FIG. 4, corresponding to the slope of surface 41, can reduce heating of the print head of printer 50. By positioning the knife beam material 80 as shown in FIG. As a result, the blocking foil 20 is peeled upwardly from the substrate 10 immediately after passing through the stamping station 30 and heated! 'Element 70 f) lin! -4: The shape and arrangement of the surface 74 and the knife beam material 80, in combination with the position of the associated transport rollers A1-H1 and KAA1-A, result in an essentially curved running path of the blocking foil 20. As a result, there is no vibration or oscillation of the blocking foil in the area of the stamping station SO.

It should therefore be pointed out that the printer 50 in FIG. 4, which moves within the machine frame perpendicular to the plane of the drawing, need not be a needle printer. Other printheads may be used with equal effect, such that the stamping force is generated in series, eg, character by character. Examples of other such printers could include type wheel or chain printers.

According to the method of the present invention, the thin-walled material passes through the printer stroke, allowing the heated pigment to be transferred from the blocking foil to the preferably heated substrate, thereby producing a sharp printed image and Strong bonding force can be obtained. An important advantage of this process is that the printing blows can be made at speeds 400 to 500 times faster than in hot stamp printers; therefore, the blocking foil is heated during the blow. It becomes impossible to do so. For this reason, as already mentioned, the blocking foil must be preheated to the transition temperature very close to the transition point.

The method of the present invention achieves printing that has the same resistance to water washing and dry cleaning as the commonly used hot stamping method, and is suitable for printing various data on clothing and the like. For multicolor printing, multiple stations can be used and white, gold or silver printing can be performed on black or other dark materials.

In the context of the electronics industry, the device of the present invention is the first to
High-quality printing can be performed on metallized plastic foils made of self-adhesive polyester used in rated circuit boards. The print has high resistance to gasoline, oil and cleaning liquids. Also, in this case, multicolor printing is possible, and silver printing can be performed on black foil.

Moreover, not only can multicolor printing be performed using multiple modules arranged in series, but also the substrate can be reversed between two printing modules, thereby printing different information on both sides of the substrate. I can do that.

[Brief explanation of drawings]

1 is a perspective view of a printing device according to a first embodiment of the invention, in which the print head is arranged on the side adjacent to the back side of a non-printed substrate; FIG. 2 is a perspective view of a printing device according to the first embodiment; FIG. 3 is a schematic side elevational view, and FIG. 4 is a perspective view of a second embodiment of the invention in which the print head is disposed on the side of the blocking foil adjacent to the surface where no pigment layer is present; FIG. FIG. 3 is a side view corresponding to FIG. 2 showing the device according to the second embodiment; 10... Base material 12... Upper surface of the base material 14... Lower surface of the base material 16... Feeding direction of the substrate 10 18... Feeding direction of the blocking foil 20... Blocking foil 22... - Pigment layer 24...blocking foil surface 33...stamping station 40...
・Pressure reaction (pressure receiving) member 42...Deflection edge 44, 56-...Surface 50...Printer 54...Guide section 52...Movement path 60...Heating metal plate 62', 62' , 64', 64', 66', 66'...
・Transportation p-2 70...Heating element 74・-Bending surface

Claims (1)

[Claims] 1. In a hot stamp printing method for a substrate, (a) contact pressure is applied to the substrate to be printed and one surface facing the substrate in a heated state; (b) preheating said pigment layer; (c) stamping said substrate and said blocking foil having a preheated pigment layer surface; (d) a stamping formed by movement of said pattern printer and pressure reaction member toward each other and relative to said blocking foil and substrate; successively transferring a pigment pattern from the blocking foil to the substrate by pressing the blocking foil with a heated transferable pigment surface against the substrate by the action of a force. Hot stamp printing method. 2. The surface of the blocking foil opposite to the surface bearing the pigment is brought into contact with a heated pressure reaction member, and the stamping station is activated by the pressure action of the printer on the surface of the substrate opposite to that to be printed. 2. The hot stamp printing method according to claim 1, wherein the base material is sequentially printed. 3. The hot stamp printing method according to claim 1, wherein the base material is heated. 4. The hot stamp printing method according to claim 2, wherein the base material is heated. 5. Contacting the surface of the blocking foil opposite the pigment layer surface with the printer and heating said blocking foil in the feed path to the printer to enable transfer of the pattern by a point just before reaching the stamping area. 2. A hot stamp printing method as claimed in claim 1, wherein the non-printed surface is maintained in contact with the pressure reaction member. 6. The hot stamp printing method according to claim 5, wherein the pressure reaction member is heated. 7. The hot stamp printing method according to claim 1, wherein the pigment is preheated to a temperature slightly lower than the melting point of the pigment. 8. The hot stamp printing method according to claim 5, wherein the pigment is preheated to a temperature slightly lower than the melting point of the pigment. 9. The hot stamp printing method according to claim 1, wherein thermal energy is constantly supplied to the blocking foil until the blocking foil reaches the pressure reaction member. 10. Until the blocking foil reaches the pressure reaction member,
3. The hot stamp printing method according to claim 2, wherein thermal energy is constantly supplied to the blocking foil. 11. Until the blocking foil reaches the pressure reaction member,
6. The hot stamp printing method according to claim 5, wherein thermal energy is constantly supplied to the blocking foil. 12. The hot stamp printing method according to claim 4, wherein thermal energy is constantly supplied to the blocking foil until the blocking foil reaches the pressure reaction member. 13. The hot stamp printing method according to claim 1, wherein the pattern is in the form of dots printed in series. 14. The hot stamp printing method according to claim 1, wherein the pattern is a character. 15. In a hot stamp printing method for a substrate, (a) a substrate to be printed and a blocking (barrier) having a pigment layer on one surface which can be transferred when contact pressure is applied in a heated state; (b) preheating said pigment layer; (c) applying pressure to said substrate and said blocking foil having a preheated pigment layer surface to form a stamping area with a pattern printer and a printing force; and (d) heated transferable pigment by the action of a stamping force formed by the movement of the pattern printer and the pressure reaction member towards each other and the blocking foil and the substrate. sequentially transferring a pigment pattern from the blocking foil to the substrate by pressing the blocking foil having a surface against the substrate; A hot stamp printing method formed by movement of a printer head in a direction transverse to the direction of feed of the member and blocking foil to said stamping station. 16. The surface of the blocking foil opposite to the surface bearing the pigment is brought into contact with a heated pressure reaction member, and the pressure action of the printer on the surface of the substrate opposite to that to be printed is applied at the stamping station. 16. The hot stamp printing method according to claim 15, wherein the base material is sequentially printed. 17. Contacting the surface of the blocking foil opposite the pigment layer surface with the printer and heating said blocking foil in the feed path to the printer to enable arc transfer by a point just before reaching the stamping area. 16. The hot stamp printing method of claim 15, wherein the non-printed surface is maintained in contact with the pressure reaction member. 18. The hot stamp printing method according to claim 15, wherein the base material is heated. 19. The hot stamp printing method according to claim 16, wherein the base material is heated. 20. The hot stamp printing method according to claim 17, wherein the base material is heated. 21. The hot stamp printing method according to claim 15, wherein the pigment is preheated to a temperature slightly lower than the melting point of the pigment. 22. Until the blocking foil reaches the pressure reaction member,
16. The hot stamp printing method according to claim 15, wherein thermal energy is constantly supplied to the blocking foil. 23. The hot stamp printing method according to claim 15, wherein the pattern is in the form of dots printed in series. 24. The hot stamp printing method according to claim 15, wherein the pattern is a character. 25. In an apparatus for hot stamping of substrates, comprising: (a) means for heating a pigment provided on one surface of a blocking foil to a temperature that enables transfer of the pigment from that surface of the blocking foil; (b) means for simultaneously conveying a substrate and a heated blocking foil between a transversely movable printing head and a pressure receiving member to form a printing stamp; and (e) placing the printing head at a stamping station. means for transversely moving and by cooperation of the printing head and the pressure receiving member to successively transfer a pigment pattern from the heated blocking foil to the substrate during interruptions in the passage of the blocking foil with the member through a stamping station; (d) means for immediately separating the blocking foil from the substrate after printing in the transverse direction is completed. 26. The hot stamping apparatus according to claim 25, wherein the pressure receiving member is adapted to be heated. 27. A hot stamping apparatus according to claim 25, wherein the transversely movable printing head is configured with a needle adapted to imprint dots of heated pigment. 28. A hot stamping apparatus according to claim 26, wherein the transversely movable printing head comprises a needle adapted to imprint dots of heated pigment. 29. The heat of claim 25, wherein the means for heating the pigment on the blocking foil is adjustable to control the amount of heat transferred to the blocking foil before reaching the stamping station. Interval stamping equipment. 30. The heat of claim 26, wherein the means for heating the pigment on the blocking foil is adjustable to control the amount of heat transferred to the blocking foil before reaching the stamping station. Interval stamping equipment. 31. The hot stamping apparatus of claim 25, wherein the means for heating the pigment on the blocking foil extends from outside the stamping station. 32, comprising a pair of transport rolls for feeding the blocking foil to the stamping station and a pair of drawer transport rolls for withdrawing the blocking foil from the printing station, the drawer transport rolls being operative to provide a drawer speed greater than the feed rate; A hot stamping device according to claim 25.