CN111819011A - Contact cleaning surface assembly and method of making same - Google Patents
Contact cleaning surface assembly and method of making same Download PDFInfo
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- CN111819011A CN111819011A CN201980015641.5A CN201980015641A CN111819011A CN 111819011 A CN111819011 A CN 111819011A CN 201980015641 A CN201980015641 A CN 201980015641A CN 111819011 A CN111819011 A CN 111819011A
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- contact cleaning
- cleaning surface
- conductive
- contact
- surface assembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0028—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by adhesive surfaces
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Cleaning In General (AREA)
- Carbon And Carbon Compounds (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
A contact cleaning surface assembly and method of making the same, the contact cleaning surface assembly comprising an elastomeric layer having a bulk conductivity (e.g., electrical conductivity), the elastomeric layer (112) having a conductive surface (114) for contacting a component to be cleaned and another conductive surface (113) in electrical contact with a conductive path (110) for extracting electrical charge from the conductive layer (112).
Description
Technical Field
The present invention relates to a contact cleaning surface assembly for use in a contact cleaning process, particularly but not exclusively to a contact cleaning surface assembly comprising an elastomeric layer having bulk conductivity. The invention also relates to a method of making a contact cleaning surface assembly.
Background
Contact cleaning is used to clean the substrate surface. Once the substrate surface is cleaned, the substrate surface can be used in a variety of complex processes, such as in the manufacture of electronic devices, optoelectronic devices, and flat panel displays. Typically, a rubber or elastomeric cleaning roller is used to remove the contaminant particles from the substrate surface, and then a sticky roller may be used to remove the contaminant particles from the cleaning roller.
In operation, the contact cleaning roller contacts at least the upper surface of the substrate, removing debris by an adhesion removal mechanism (e.g., van der waals and adhesion forces), wherein the inherent properties of the material used to form the contact cleaning roller attract and adhere the debris to the surface of the contact cleaning roller. It is believed that the contact cleaning roller pulls the particles away from the substrate surface in this manner due to van der waals forces that attract the contaminant particles and the roller to each other. Thus, existing contact cleaning rollers can ensure effectiveness in removing contaminant particles by maximizing contact with the substrate surface.
In addition to the weak van der waals electrostatic forces inherent in the material of the contact scrub roller, other electrostatic charges may also be generated. Contact cleaning processes rely on contact between different surfaces and can be a source of charge resulting from triboelectric effects and static charge buildup. Therefore, in an electronics assembly plant, any equipment used in close proximity to the substrate (e.g., in the range of 100 mm) must be non-insulating and must have a sufficiently low surface resistance to prevent damage to the substrate by static charge.
When a contact cleaning roller has sufficient surface adhesion to clean a substrate (i.e., a member to be cleaned), an electrostatic charge may be generated during the contact cleaning process.
Surface resistance RsDefined as the ratio of voltage to current along the surface of a material, is a property of the material measured in ohms (Ω) and is defined as follows:
where U is the DC voltage and the surface current is Is。
One known method of measuring sheet resistance is provided in the American National Standards Institute (ANSI) ESD STM 11.11-2015 standard. According to this method, any equipment used by the electronic assembly plant within 100mm of the substrate must have less than 1 x 109Surface resistance of Ω.
Bulk conductivity is typically obtained by measuring the volume resistance. One known method of measuring volume resistance is provided in the American National Standards Institute (ANSI) ESD STM11.12-2015 standard.
Typical rubber or elastomeric cleaning rollers generally do not have a surface area of less than 1 x 109Surface resistances of Ω, in other words they are insulating and non-conducting. It is desirable to provide a scrub roller that allows the dissipation of electrostatic charges away from the substrate to be cleaned.
It is not uncommon to use one or more additives to alter the properties of materials, such as those used in contact scrub rolls, during the manufacturing process. However, the additive will necessarily impart different properties to the starting material, and a change to the starting material carries the risk of inhibiting its primary function (i.e. contact cleaning). This risk is particularly high when attempting to alter the surface characteristics of a contact cleaning roller if the surface is critical to the cleaning efficiency of the roller. Any circumstance that reduces the amount of elastomer on the roller surface will likely mean that the elastomer is unable to make sufficient contact with the substrate to be cleaned, resulting in a reduced ability to contact and attract dirt and debris. In addition, as described above, the modifying additives may interfere with the general process of attracting debris to the surface of the scrub roller. In both cases, the cleaning efficiency of the roller will be inhibited or reduced.
Typical conductive additives, such as fibers and particles, may not be uniformly dispersed throughout the elastomeric matrix. Thus, the roller will have a non-uniform surface resistance, combined with portions that conduct charge away from the cleaning surface and portions that allow charge to accumulate and damage the substrate.
It is further contemplated that the addition of additives to the elastomer should not affect the integrity of the elastomer or the roll. Loss of integrity or reduction in its wear resistance can result in the roller wearing too quickly or the surface becoming damaged or pitted, further reducing its effectiveness. All of these factors can increase the operating cost of the contact cleaning process.
Furthermore, an additive material that is not sufficiently similar to the elastomer (e.g., low bonding surface area) would mean that the surrounding elastomer cannot effectively bond or adhere to the additive. If the material is not firmly embedded within the elastomer, the material will be dislodged and leave the surface of the roller as it operates, thereby contaminating the substrate being cleaned and/or being picked up by the adhesive roller, thereby shortening its life and increasing running costs. Furthermore, if material is removed from the roller, it can result in damage to the roller surface, again reducing cleaning efficiency and increasing costs.
It is important not to use excessive amounts of additives to achieve a suitable reduction in surface resistance, as the material will not be cost effective and may make the cost of the contact cleaning roller prohibitive. Therefore, it is important to maximize the electrical connectivity provided by the additive while minimizing the amount of the additive used.
Another related consequence of using large amounts of additives is that it results in an increase in the amount of material on the roll surface, while the amount of elastomer is reduced. The problem of elastomer reduction at the roll surface has been described above.
When the scrub roller is worn, it is important that its surface resistance is not affected, otherwise the risk of static electricity accumulation will increase during the lifetime of the scrub roller. If this occurs, the rolls may need to be replaced early and the operating costs will increase. It is therefore important that anything that improves the surface resistance of the roll must last so over the life of the roll without losing effectiveness.
As noted above, certain cleaning applications require that the surface resistance of the cleaning surface be less than 1X 109Omega. This not only requires the contact scrub roller to haveLess than 1 x 109Ω surface resistance and, of course, the roller must be able to allow the conduction of electrostatic charges from the cleaning surface to the floor. The roller must also be such that it is in continuous operation, i.e. the roller must always enable the electric charge to be conducted while it is rotating. Thus, it may not be sufficient to provide a roller with a low resistance in a local area, but which must be able to conduct the charges from the substrate surface to a suitable grounding means (i.e. to ground) all the way during its operation.
It is an object of the present invention to mitigate or alleviate at least one or more of the above problems.
It is an object of the present invention to mitigate or alleviate the problem of static charge build-up generated by a contact cleaning surface assembly.
Another object is to alleviate or mitigate the problem of static charge without reducing or inhibiting the cleaning effectiveness of the contact cleaning roller, or reducing the working life of the contact cleaning surface assembly or the adhesive roller.
It is yet another object of the present invention to reduce the surface resistance of a contact cleaning surface assembly to less than 1 x 109Ω and further, while achieving this, provides a path to allow the static charge to conduct to ground.
Another object of the present invention is to reduce the surface resistance while minimizing the amount of non-insulating additives and maximizing their electrical connectivity.
It is another object of the present invention to improve the connectivity while mitigating any reduction in or improving the integrity of the contact cleaning surface assembly.
It is another object of the present invention to mitigate or alleviate static charge when using a contact cleaning surface assembly for use in a suitable contact cleaning device.
It is also an object of the present invention to provide a method of making a contact cleaning surface assembly that is capable of mitigating or mitigating static charge.
Disclosure of Invention
According to one aspect of the invention, a contact cleaning surface assembly is provided that includes an elastomeric layer having a bulk conductivity (e.g., electrical conductivity) having an electrically conductive surface for contacting a component to be cleaned, and another electrically conductive surface in electrical contact with an electrically conductive path for extracting electrical charge from the electrically conductive layer.
In certain embodiments, the elastomeric layer is in electrical contact with the conductive pathway.
In certain embodiments, the elastomer layer is in intimate contact with the conductive pathway.
In certain embodiments, the conductive path provides charge extraction from the elastomer layer to ground (i.e., electrical grounding).
In certain embodiments, the conductive path includes a metal charge extraction element in contact with the conductive surface of the elastomeric layer.
In certain embodiments, the conductive path is a conductive support of the elastomeric layer.
In certain embodiments, the elastomeric layer is in intimate contact with the support.
In some embodiments, the charge extraction path is from the conductive layer to the conductive path.
In certain embodiments, the elastomeric layer is attached to the conductive support.
In certain embodiments, the elastomeric layer is in intimate contact with the conductive support. More specifically, the elastomer layer is in close contact with the support over the entire other conductive surface of the elastomer layer. In this way, the charge extraction from the elastomer layer to the support takes place over the entire further conductive surface of the elastomer layer.
In certain embodiments, the conductive support is formed from a metallic conductor material. More specifically, the metallic conductor support is stainless steel.
In certain embodiments, the conductive support is formed from a non-metallic conductor material. More specifically, the non-metallic conductor support is carbon fiber.
In certain embodiments, the support is a shaft.
In some embodiments, the charge extraction path is from the conductive layer to the conductive support. More specifically, the charge extraction path is from a conductive surface of the elastomeric material, through the elastomeric material to another conductive surface of the elastomeric material, and to the conductive support.
In certain embodiments, the assembly is a roller.
In certain embodiments, the assembly comprises a planar (or substantially planar) sheet.
In certain embodiments, the elastomeric layer includes conductive elements. More specifically, the elastomeric layer includes a modifier that includes a conductive element. In this way, the modifier reduces the bulk and surface resistance of the elastomeric layer and provides bulk conductivity to the elastomeric layer.
In certain embodiments, the conductive elements form a network. More specifically, the network of conductive elements is electrically conductive. The conductive elements in the elastomeric layer are in close proximity or contact with each other so that the network of conductive elements provides a charge path from the outer conductive surface of the elastomeric layer, through the elastomeric layer to the other conductive surface of the elastomeric layer, and to the conductive support. In this way, an electrical charge can be extracted from the substrate (i.e., the component to be cleaned), passing through the elastomeric layer to the conductive support, and then to ground.
In certain embodiments, the elastomeric layer comprises an interconnected network of conductive elements.
In certain embodiments, the conductive element is elongated. In this way, the surface area of the conductive element in contact with the elastomer of the elastomer layer is increased and the retention of the element in the elastomer layer is enhanced.
In certain embodiments, the elongated conductive element is hollow.
In certain embodiments, the conductive element is carbon.
In certain embodiments, the conductive elements are nanotubes.
In certain embodiments, the conductive elements are carbon nanotubes.
In certain embodiments, the nanotubes are single-walled carbon nanotubes. In this way, a balance is maintained between the cleaning performance of the elastomeric layer and its bulk conductivity. The high surface area of the nanotubes provides an improvement in the incorporation of carbon into the elastomer compared to granular carbon or carbon fibers.
More specifically, carbon nanotubes are single carbon atom wall thick.
In some embodiments, the surface resistance of the or each conductive surface is less than 1 x 109Omega. More specifically, the surface resistance of both the conductive surface and the other conductive surface of the elastomer layer is less than 1 × 109Omega. Still more particularly, the surface resistances of both the conductive surface of the elastomeric layer and the other conductive surface are substantially equal.
In some embodiments, the surface resistance of the or each conductive surface is about 1 x 106Omega to about 1X 109In the range of Ω. More specifically, the surface resistance of both the conductive surface and the other conductive surface of the elastomeric layer is about 1 × 106Omega to about 1X 109In the range of Ω. Still more particularly, the surface resistances of both the conductive surface of the elastomeric layer and the other conductive surface are substantially equal.
In certain embodiments, the elongated conductive elements are uniformly dispersed throughout the elastomeric material.
In certain embodiments, the conductive elements are dispersed such that they are embedded and retained in the elastomeric material.
In certain embodiments, the conductive elements are randomly oriented in the elastomeric material.
In certain embodiments, the conductive element has a length in a range of about 5 μm to about 30 μm.
In certain embodiments, the conductive elements have a diameter in the range of about 1nm to about 200 nm.
In certain embodiments, the concentration of the conductive element in the elastomer is at least about 0.015% by weight of the elastomer.
In certain embodiments, the elastomer comprises one of silicone rubber or polyurethane.
In certain embodiments, the elastomer comprises silicone. In this way, when the carbon nanotubes are dispersed in the silicone material, a conductive silicone layer may be formed. The nanotubes are retained within the silicone polymer matrix by covalent bonding. Other additives such as particulate materials tend to migrate out of the silicone matrix due to the flowability of the silicone matrix. Thus, the carbon nanotubes provide a retention modifier that is retained within the silicone matrix.
In certain embodiments, the elastomer is a two-part room temperature curing silicone rubber.
According to another aspect of the present invention, there is provided a contact cleaning roller comprising:
in the region of the core portion,
and a surface region overlying the core region, wherein the surface region comprises an elastomer and a plurality of elongate elements dispersed within the elastomer material, wherein the elongate elements are formed of a non-electrically insulating material.
According to a further aspect of the invention there is provided the use of a contact cleaning surface assembly according to the invention in a contact cleaning process.
According to another aspect of the present invention, there is provided a contact cleaning apparatus comprising a contact cleaning surface assembly according to the present invention.
According to another aspect of the present invention, there is provided a method of manufacturing a contact cleaning roller, the method comprising:
the elastomer is provided in the form of a fluid,
dispersing elongated elements formed of electrically non-insulating material into an elastomer,
providing a core region of a contact scrub roller, an
The core region is coated with an elastomer.
In certain embodiments, the method then includes curing the elastomer.
According to yet another aspect of the invention, there is provided a method of manufacturing a contact cleaning surface assembly, the method comprising:
there is provided a prepolymer of an elastomer which,
a polymer modifier formed of a non-electrically insulating material is added to the prepolymer,
causing the polymerization of the prepolymer to take place,
the polymer is cured to form an elastomeric cleaning surface having bulk conductivity.
In certain embodiments, the conductive elements are dispersed throughout the elastomer after curing.
In certain embodiments, after curing, the conductive elements form a network.
In certain embodiments, the conductive elements are oriented in random orientations.
Drawings
The invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic side view of a contact cleaning apparatus using a roller with a contact cleaning surface assembly according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a contact cleaning surface assembly according to an embodiment of the present invention;
FIG. 3a is another schematic cross-sectional view of a contact cleaning surface assembly according to a first embodiment of the present invention;
FIG. 3b is a schematic enlarged cross-sectional view of a portion of the contact cleaning surface assembly of FIG. 3 a; and
fig. 4 is a schematic diagram of an elongated single-walled carbon nanotube according to an embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic side view of a contact cleaning apparatus using a contact cleaning surface assembly as a roller according to an embodiment of the present invention. The contact cleaning device 1 comprises a contact cleaning roller 2 and an adhesive roller 3 mounted above a conveyor 4, the conveyor 4 carrying a plurality of substrates 5 to be cleaned. The contact scrub roller 2 is elongate and generally cylindrical and is mounted on a support (not shown) having an axis perpendicular to the viewing plane about which the contact scrub roller 2 is free to rotate. The specific structure of the contact cleaning roller 2 is described in more detail below. The adhesive roller 3 is generally cylindrical and comprises a body having a surface on which adhesive is present, and also mounted on a support (not shown) having an axis perpendicular to the viewing plane and parallel to the axis of the contact cleaning roller 2 about which the adhesive roller 3 is free to rotate. The contact scrub roller 2 and the adhesive roller 3 are mounted in contact with each other such that a clockwise rotational movement of the contact scrub roller 2 results in a counter clockwise rotational movement of the adhesive roller 3 and vice versa. It will be clear from the following description of the use that the contact cleaning roller 2 and the adhesive roller 3 need to be in contact. The contact cleaning roller 2 is also mounted so that the contact cleaning roller 2 can come into contact with the surface of the substrate 5 to be cleaned when the substrate 5 to be cleaned is conveyed on the conveyor below the axis of the conveyor 4.
The substrate 5 to be cleaned is treated as follows. The substrate 5 is positioned on the upper surface 6 of the conveyor 4 and the conveyor 4 moves from right to left as indicated by arrow a in fig. 1. The substrate 5 to be cleaned passes under the contact cleaning roller 2, and the contact cleaning roller 2 rotates in a clockwise direction indicated by an arrow B. The upper surface of the substrate 5 is covered with debris 7, such as dust, to be removed prior to contact with the contact scrub roller 2. The contact cleaning roller 2 is brought into contact with the upper surface of the substrate 5, and the debris 7 is removed by an electrostatic removal mechanism in which the inherent polarity of the material used to form the contact cleaning roller 2 attracts and adheres the debris 7 to the surface of the contact cleaning roller 2. The relative attraction between the surface of the contact scrub roller 2 and the debris 7 is greater than the relative attraction between the debris 7 and the surface of the substrate 5, so that the debris 7 is removed. The now cleaned substrate 5 continues along the conveyor 4 to a removal station (not shown) and the lower surface 8 of the conveyor returns, forming a loop in the left-right direction in fig. 1, as indicated by arrow D. To clean the contact cleaning roller 2, an adhesive roller rotating in a counterclockwise direction as shown by an arrow C is brought into contact with the surface of the contact cleaning roller 2. At this time, the adhesion force between the chips 7 and the adhesive agent present on the surface of the tack roller 3 is greater than the adhesion force holding the chips 7 to the surface of the contact cleaning roller 2, and thus the chips are removed. Then, the contact cleaning roller 3 rotates to present a clean surface to the next substrate 5 to be cleaned.
Fig. 2 is a schematic cross-sectional view of a contact cleaning surface assembly according to a first embodiment of the present invention. A contact cleaning surface assembly in the form of a roller is used as the contact cleaning roller in the contact cleaning system 1 as described above. The roll 102 includes a conductive path that is a conductive support 110 encased in a conductive elastomer layer 112. The roller 102 is elongated and generally cylindrical and is mounted via a mounting mechanism to a bracket (not shown) for use in the contact cleaning apparatus 1. The conductive shaft 110 is coaxial with the conductive elastomer layer 112. The shaft 110 may be used to mount the roller 102 and, in use, for rotational movement of the roller 102. Suitably, such a shaft 110 is formed of an electrically conductive material, such as a metal or non-metal or a composite conductive material (e.g., stainless steel or carbon fiber composite). The conductive shaft 110 is encased in an elastomeric material 112 (e.g., rubber or other natural or synthetic elastomeric material). The elastomeric material is substantially homogeneous.
The conductive elastomer layer 112 has a surface resistance of less than 1 x 109Omega conductive outer surface 114. The conductive elastomer layer 112 has a conductive inner surface 113, the conductive inner surface 113 having less than 1 x 109Surface resistance of Ω and contact with the conductive shaft 110. In this manner, a conductive path is formed from the outer surface 114 to the inner surface 113 and then to the shaft 110. During cleaning of a component (not shown in the figures) using the contact cleaning roller 102, the electrostatic charge generated at the surface 114 is conducted through the layer 112 to the conductive path provided by the conductive shaft 110.
Fig. 3a is a schematic cross-sectional view of a contact cleaning surface assembly in the form of a roller 102 according to an embodiment of the present invention. Fig. 3b is a schematic enlarged sectional view of a portion of the same roller 102. Roller 102 includes an elastomeric layer 112 having an outer conductive surface 114 and an inner conductive surface 113. A conductive elastomer layer 112 is wrapped around and attached to the conductive stainless steel shaft 110. The outer surface 114 may be used to remove debris from the substrate surface in the manner described above.
In the arrangement described, the elastomeric layer is a two-component room temperature curing silicone rubber.
The elastomeric layer 112 includes a plurality of elongated single-walled carbon nanotubes 116 dispersed and embedded within an elastomeric material. Elongated single-walled carbon nanotubes 116 are dispersed within the elastomer of layer 112 and form an interconnected network of carbon nanotubes 118. The dispersion of nanotubes 116 within the elastomer is such that the members are dispersed in a random orientation throughout substantially the entire thickness of the surface region 112, from the inner conductive surface 113, which is in contact with the conductive shaft 110, to the outer conductive surface 114. The nanotubes are also substantially distributed over the axial width of the roll 102. Furthermore, when the nanotubes 116 comprise a non-electrically insulating material, then the entire surface area 112 has a reduced electrical resistance or increased electrical conductivity as compared to the elastomer alone. In this manner, the elastomeric layer 112 has a bulk conductivity provided by the interconnected network of carbon nanotubes 118.
The bulk conductivity of the elastomeric material in layer 112 provides a charge path to ground for charges generated during the cleaning operation. Thus, the roller will not only exhibit reduced electrical resistance when it is new, but even as the outer surface 114 wears, the effect will continue throughout its entire service life.
The dispersion of the elongated carbon elements 116 and the formation of the network 118 result in a reduced surface resistance (measured according to ANSI ESD STM 11.11.11-2015 standard) at the conductive surfaces 113 and 114 of less than 1 x 109Omega. Further, because the entire elastomeric layer 114 has a reduced electrical resistance, the roller 102 may provide a path that allows the static charge to conduct away from the substrate surface to ground.
Figure 4 depicts an elongated single-walled carbon nanotube 116 according to one embodiment of the invention. The nanotube 116 is one of a plurality of similar elongated single-walled carbon nanotubes dispersed within the elastomeric layer 112.
The length of each single-walled carbon nanotube 116 may vary in the range of 5-30 μm and may have a diameter in the range of 1-200 nm. In the embodiment of fig. 3a and 3b, single-walled carbon nanotubes comprise 0.02% by weight of the elastomer comprising the elastomer layer 112.
The elongated single-walled carbon nanotubes 116 are dispersed such that they form a conductive network (118, fig. 3b) that extends substantially throughout the elastomeric layer 112. Thus, if any static charge begins to accumulate on the outer surface 114, the static charge will dissipate from the substrate surface to the shaft 110 immediately before damaging the substrate.
The elongated single-walled carbon nanotubes 116 ensure effective interconnectivity in the network 118. In other words, when a very low amount of nanotubes 116 is added, the nanotubes 116 substantially reduce the electrical insulating properties of the elastomer due to their low weight per unit length and high surface area per unit length. Thus, only a small amount is required to ensure effective reduction of the surface resistance of the roll 102 and to provide the desired bulk conductivity for the elastomeric layer, as compared to other conductive additives.
The hollow shape of the elongated single-walled carbon nanotubes 116 provides a high surface area for a given weight of element, which ensures sufficient bonding with the surrounding elastomer so that each elongated member 116 is securely embedded within the elastomer layer 112. Thus, when the elastomeric layer conductive surface 114 wears in use, the elongated elements 116 cannot separate or loosen from the roll 102.
Furthermore, the embedding of the elongated single-walled carbon nanotubes 116 ensures that the integrity of the elastomer is not deteriorated and may even improve or enhance the surface area 112.
The nanotubes 116 form a charge path from the outer conductive surface 114 to the inner conductive surface 113 to the conductive shaft 110 through the interconnection network 118. The charge may be grounded from the shaft 110 by any suitable grounding means (not shown).
Various modifications and embodiments to the described embodiments are contemplated. For example, the grounding device can be electrically connected to the contact scrub roller by any suitable means.
In another embodiment of the present invention, the elastomer of the surface region 112 comprises polyurethane or silicone rubber. In further embodiments, the elastomer may also be a heat-cured silicone, or other material suitable for a contact scrub roller, as known to those skilled in the art.
In embodiments of the present invention, the cleaning surface assembly may clean both sides of a substrate (i.e., a component to be cleaned). Both sides may be cleaned simultaneously or separately.
Throughout the description and claims of this specification, the words "comprise" and "comprise", and variations thereof, mean "including but not limited to", and are not intended to (and do not) exclude other moieties, additives, components, integers or steps. Throughout the specification and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.
Features, integers, characteristics, compounds, chemical moieties or groups described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive. The invention is not restricted to the details of any of the foregoing embodiments. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
Claims (40)
1. A contact cleaning surface assembly includes an elastomeric layer having a bulk conductivity (e.g., electrical conductivity) having an electrically conductive surface for contacting a component to be cleaned and another electrically conductive surface in electrical contact with an electrically conductive path for extracting electrical charge from the electrically conductive layer.
2. The contact cleaning surface assembly of claim 1, wherein the elastomeric layer is in electrical contact with the conductive path.
3. The contact cleaning surface assembly of claim 2, wherein the elastomer layer is in intimate contact with the conductive path.
4. The contact cleaning assembly of claim 1 or 2, wherein the conductive path is a conductive support for the elastomeric layer.
5. The contact cleaning surface assembly of claim 3, wherein the elastomeric layer is in intimate contact with the support.
6. The contact cleaning surface assembly of any of claims 1 to 5, wherein a charge extraction path is from the conductive layer to the conductive path.
7. The contact cleaning surface assembly of any of the preceding claims, wherein the assembly is a roller.
8. The contact cleaning surface assembly of any of claims 1 to 6, wherein the assembly comprises a planar (or substantially planar) sheet.
9. The contact cleaning surface assembly according to any of the preceding claims, wherein the elastomeric layer comprises conductive elements.
10. The contact cleaning surface assembly of claim 9, wherein the conductive elements form a network.
11. The contact cleaning surface assembly of claim 9 or 10, wherein the network is electrically conductive (e.g., adjacent to or in contact with each other).
12. The contact cleaning surface assembly according to any of the preceding claims, wherein the elastomeric layer comprises an interconnected network of conductive elements.
13. The contact cleaning surface assembly of claim 12, wherein the conductive elements are elongated.
14. The contact cleaning surface assembly of claim 12 or 13, wherein the elongated conductive elements are hollow.
15. The contact cleaning surface assembly according to any of claims 12 to 14, wherein the conductive element is carbon.
16. The contact cleaning surface assembly of any of claims 12-15, wherein the conductive elements are nanotubes.
17. The contact cleaning surface assembly according to any of claims 12 to 16, wherein the conductive elements are carbon nanotubes.
18. The contact cleaning surface assembly of claim 16 or 17, wherein the nanotubes are single-walled carbon nanotubes.
19. The contact cleaning surface assembly of claim 18, wherein the carbon nanotubes are of a single carbon atom wall thickness.
20. The contact cleaning surface assembly of any of the preceding claims, wherein the or each conductive surface has a surface resistance of less than 1 x 109Ω。
21. The contact cleaning surface assembly of any of the preceding claims, wherein the surface resistance of the or each conductive surface is at about 1 x 106Omega to about 1X 109In the range of omega.
22. The contact cleaning surface assembly according to any one of claims 4 to 21, wherein the support is a shaft.
23. The contact cleaning surface assembly according to any of the preceding claims, wherein the elongated conductive elements are uniformly dispersed throughout the elastomeric material.
24. The contact cleaning surface assembly according to any of claims 9 to 23, wherein the conductive elements are dispersed such that they are embedded and retained in the elastomeric material.
25. The contact scrub roller of any of claims 9 to 24, wherein the conductive elements are randomly oriented in the elastomeric material.
26. The contact cleaning surface assembly of any of claims 9 to 25, wherein the conductive elements have a length in the range of about 5 μ ι η to about 30 μ ι η.
27. The contact cleaning surface assembly of any of claims 9 to 26, wherein the conductive elements have a diameter in the range of about 1nm to about 200 nm.
28. The contact cleaning surface assembly of any of claims 9-28, wherein the concentration of the conductive element in the elastomer is at least about 0.015% by weight of the elastomer.
29. The contact cleaning surface assembly according to any of the preceding claims, wherein the elastomer comprises one of silicone rubber or polyurethane.
30. The contact cleaning surface assembly according to any of the preceding claims, wherein the elastomer comprises one of a thermally cured silicone or polyurethane.
31. The contact cleaning surface assembly of claim 30, wherein the elastomer is a two-part room temperature curing silicone rubber.
32. A contact cleaning surface roller comprising:
in the region of the core portion,
and a surface region encasing the core region, wherein the surface region comprises an elastomer and a plurality of elongate elements dispersed within the elastomer material, wherein the elongate elements are formed of a non-electrically insulating material.
33. Use of the contact cleaning surface assembly of any one of claims 1 to 31 in a contact cleaning process.
34. A contact cleaning device comprising the contact cleaning surface assembly of any one of claims 1 to 31.
35. A method of making a contact scrub roller, the method comprising:
the elastomer is provided in the form of a fluid,
dispersing elongated elements formed of electrically non-insulating material into said elastomer,
providing a core region of a contact scrub roller, an
Coating the core region with the elastomer.
36. The method of claim 35, subsequently comprising curing the elastomer.
37. A method of making a contact cleaning surface assembly, the method comprising:
there is provided a prepolymer of an elastomer which,
adding a polymer modifier formed of a non-electrically insulating material to the prepolymer,
causing the polymerization of the pre-polymer to take place,
the polymer is cured to form an elastomeric cleaning surface having bulk conductivity.
38. A method as claimed in any of claims 35 to 37, wherein after curing, the conductive elements are dispersed throughout the elastomer.
39. A method according to any one of claims 35 to 38, wherein after curing, the conductive elements form a network.
40. A method according to any one of claims 35 to 39, wherein the conductive elements are oriented in random orientations.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1803873.7 | 2018-03-12 | ||
| GB1803873.7A GB2574179B (en) | 2018-03-12 | 2018-03-12 | Contact cleaning surface assembly |
| PCT/US2019/021580 WO2019177950A1 (en) | 2018-03-12 | 2019-03-11 | Contact cleaning surface assembly and method of manufacturing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111819011A true CN111819011A (en) | 2020-10-23 |
Family
ID=61972991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980015641.5A Pending CN111819011A (en) | 2018-03-12 | 2019-03-11 | Contact cleaning surface assembly and method of making same |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3765214B1 (en) |
| JP (2) | JP2021517506A (en) |
| CN (1) | CN111819011A (en) |
| GB (1) | GB2574179B (en) |
| WO (1) | WO2019177950A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB202019613D0 (en) * | 2020-12-11 | 2021-01-27 | Illinois Tool Works | System and method for cleaning an object |
| CN117698141A (en) * | 2023-11-24 | 2024-03-15 | 南通汇优洁医用材料有限公司 | Multilayer composite non-woven fabric processing equipment |
Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411198A (en) * | 1972-12-26 | 1975-10-22 | Ibm | Apparatus for removing electrostatically charged particles from a surface |
| US4967231A (en) * | 1987-12-29 | 1990-10-30 | Kabushiki Kaisha Toshiba | Apparatus for forming an electrophotographic latent image |
| US5642550A (en) * | 1994-02-28 | 1997-07-01 | Ricoh Company, Ltd. | Apparatus for removing image forming substance from image holding member |
| JPH10186982A (en) * | 1996-12-19 | 1998-07-14 | Canon Inc | Cleaning member and image forming device |
| US5902678A (en) * | 1997-04-01 | 1999-05-11 | Nitto Denko Corporation | Pressure-sensitive adhesive or pressure-sensitive adhesive tape for foreign-matter removal |
| US5978630A (en) * | 1998-01-08 | 1999-11-02 | Xerox Corporation | System for cleaning contaminants from a vacuum assisted image conditioning roll |
| US6272301B1 (en) * | 1998-09-22 | 2001-08-07 | Canon Kabushiki Kaisha | Image forming apparatus featuring a rotatable electroconductive foam member |
| US20020023307A1 (en) * | 2000-07-12 | 2002-02-28 | Nitto Denko Corporation And Rayon Industrial Co., Ltd | Dust remover |
| CN1493249A (en) * | 2002-09-25 | 2004-05-05 | �ն��繤��ʽ���� | Viscous dust remover |
| CN101114569A (en) * | 2005-12-30 | 2008-01-30 | 兰姆研究有限公司 | Method and apparatus for removing contamination from substrate |
| US20080146427A1 (en) * | 2006-11-16 | 2008-06-19 | Bridgestone Corporation | Electrical conductive roller and imaging apparatus comprising the same |
| US20110275502A1 (en) * | 2010-05-10 | 2011-11-10 | 7-Sigma, Inc. | Electrically conductive member for electrophotographic printer applications |
| CN102361703A (en) * | 2009-03-23 | 2012-02-22 | 阪东化学株式会社 | Cleaning system |
| CN202199551U (en) * | 2011-08-25 | 2012-04-25 | 苏州诚立电子材料有限公司 | Antistatic sticky roller |
| CN103176381A (en) * | 2011-12-22 | 2013-06-26 | 富士施乐株式会社 | Conductive roller, image-forming apparatus, and process cartridge |
| US20130196836A1 (en) * | 2012-01-26 | 2013-08-01 | Fuji Xerox Co., Ltd. | Conductive roller, image-forming apparatus, and process cartridge |
| CN204018308U (en) * | 2014-09-04 | 2014-12-17 | 苏州市星辰科技有限公司 | The one static that disappears is rotated Roller for sticking dust |
| CN104668218A (en) * | 2009-12-03 | 2015-06-03 | 国际测试解决方案有限公司 | Method for cleaning tester interface contact elements and support hardware |
| JP2015217355A (en) * | 2014-05-19 | 2015-12-07 | バンドー化学株式会社 | Cleaning roller |
| CN105739262A (en) * | 2014-12-26 | 2016-07-06 | 佳能株式会社 | Member for electrophotography and method of producing the member, process cartridge, and electrophotographic apparatus |
| CN105834168A (en) * | 2016-05-12 | 2016-08-10 | 深圳市深鸿海自动化设备有限公司 | Dust removing and static electricity removing cleaning machine used before LCM attachment |
| CN106019888A (en) * | 2015-03-26 | 2016-10-12 | 柯尼卡美能达株式会社 | Electrified apparatus |
| CN106040673A (en) * | 2016-06-12 | 2016-10-26 | 贵州劲嘉新型包装材料有限公司 | Dedusting and static removing system for PET transfer film |
| US20170160665A1 (en) * | 2015-12-03 | 2017-06-08 | Sumitomo Rubber Industries, Ltd. | Semiconductive roller, and method of producing the same |
| CN106807692A (en) * | 2015-12-02 | 2017-06-09 | 陕西融泰企业管理咨询有限公司 | A kind of clear powder dust arrester of lithium battery pole slice |
| CN107552493A (en) * | 2016-06-30 | 2018-01-09 | 住友化学株式会社 | Cleaning method, membrane winding body and its manufacture method of barrier film core |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0683821B2 (en) * | 1992-05-02 | 1994-10-26 | テクノロール株式会社 | Conductive dust removal adhesive |
-
2018
- 2018-03-12 GB GB1803873.7A patent/GB2574179B/en active Active
-
2019
- 2019-03-11 CN CN201980015641.5A patent/CN111819011A/en active Pending
- 2019-03-11 EP EP19713294.7A patent/EP3765214B1/en active Active
- 2019-03-11 WO PCT/US2019/021580 patent/WO2019177950A1/en unknown
- 2019-03-11 JP JP2020548638A patent/JP2021517506A/en not_active Withdrawn
-
2024
- 2024-01-05 JP JP2024000811A patent/JP2024026637A/en active Pending
Patent Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411198A (en) * | 1972-12-26 | 1975-10-22 | Ibm | Apparatus for removing electrostatically charged particles from a surface |
| US4967231A (en) * | 1987-12-29 | 1990-10-30 | Kabushiki Kaisha Toshiba | Apparatus for forming an electrophotographic latent image |
| US5642550A (en) * | 1994-02-28 | 1997-07-01 | Ricoh Company, Ltd. | Apparatus for removing image forming substance from image holding member |
| JPH10186982A (en) * | 1996-12-19 | 1998-07-14 | Canon Inc | Cleaning member and image forming device |
| US5902678A (en) * | 1997-04-01 | 1999-05-11 | Nitto Denko Corporation | Pressure-sensitive adhesive or pressure-sensitive adhesive tape for foreign-matter removal |
| US5978630A (en) * | 1998-01-08 | 1999-11-02 | Xerox Corporation | System for cleaning contaminants from a vacuum assisted image conditioning roll |
| US6272301B1 (en) * | 1998-09-22 | 2001-08-07 | Canon Kabushiki Kaisha | Image forming apparatus featuring a rotatable electroconductive foam member |
| US20020023307A1 (en) * | 2000-07-12 | 2002-02-28 | Nitto Denko Corporation And Rayon Industrial Co., Ltd | Dust remover |
| CN1493249A (en) * | 2002-09-25 | 2004-05-05 | �ն��繤��ʽ���� | Viscous dust remover |
| CN101114569A (en) * | 2005-12-30 | 2008-01-30 | 兰姆研究有限公司 | Method and apparatus for removing contamination from substrate |
| US20080146427A1 (en) * | 2006-11-16 | 2008-06-19 | Bridgestone Corporation | Electrical conductive roller and imaging apparatus comprising the same |
| CN102361703A (en) * | 2009-03-23 | 2012-02-22 | 阪东化学株式会社 | Cleaning system |
| CN104668218A (en) * | 2009-12-03 | 2015-06-03 | 国际测试解决方案有限公司 | Method for cleaning tester interface contact elements and support hardware |
| US20110275502A1 (en) * | 2010-05-10 | 2011-11-10 | 7-Sigma, Inc. | Electrically conductive member for electrophotographic printer applications |
| CN202199551U (en) * | 2011-08-25 | 2012-04-25 | 苏州诚立电子材料有限公司 | Antistatic sticky roller |
| CN103176381A (en) * | 2011-12-22 | 2013-06-26 | 富士施乐株式会社 | Conductive roller, image-forming apparatus, and process cartridge |
| US20130196836A1 (en) * | 2012-01-26 | 2013-08-01 | Fuji Xerox Co., Ltd. | Conductive roller, image-forming apparatus, and process cartridge |
| JP2015217355A (en) * | 2014-05-19 | 2015-12-07 | バンドー化学株式会社 | Cleaning roller |
| CN204018308U (en) * | 2014-09-04 | 2014-12-17 | 苏州市星辰科技有限公司 | The one static that disappears is rotated Roller for sticking dust |
| CN105739262A (en) * | 2014-12-26 | 2016-07-06 | 佳能株式会社 | Member for electrophotography and method of producing the member, process cartridge, and electrophotographic apparatus |
| CN106019888A (en) * | 2015-03-26 | 2016-10-12 | 柯尼卡美能达株式会社 | Electrified apparatus |
| CN106807692A (en) * | 2015-12-02 | 2017-06-09 | 陕西融泰企业管理咨询有限公司 | A kind of clear powder dust arrester of lithium battery pole slice |
| US20170160665A1 (en) * | 2015-12-03 | 2017-06-08 | Sumitomo Rubber Industries, Ltd. | Semiconductive roller, and method of producing the same |
| CN105834168A (en) * | 2016-05-12 | 2016-08-10 | 深圳市深鸿海自动化设备有限公司 | Dust removing and static electricity removing cleaning machine used before LCM attachment |
| CN106040673A (en) * | 2016-06-12 | 2016-10-26 | 贵州劲嘉新型包装材料有限公司 | Dedusting and static removing system for PET transfer film |
| CN107552493A (en) * | 2016-06-30 | 2018-01-09 | 住友化学株式会社 | Cleaning method, membrane winding body and its manufacture method of barrier film core |
Non-Patent Citations (1)
| Title |
|---|
| 李路海主编, 国防工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201803873D0 (en) | 2018-04-25 |
| JP2024026637A (en) | 2024-02-28 |
| GB2574179B (en) | 2021-06-30 |
| EP3765214B1 (en) | 2024-05-01 |
| WO2019177950A1 (en) | 2019-09-19 |
| EP3765214A1 (en) | 2021-01-20 |
| GB2574179A (en) | 2019-12-04 |
| JP2021517506A (en) | 2021-07-26 |
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