Component and toner cartridge

Abstract

Provided is a member having excellent wear resistance.　The member (10) comprises a foam layer (20) and a coating layer (30), wherein the coating layer is exposed. The coating layer (30) has a polyol, an isocyanate, a photopolymerizable monomer including a hydroxyl group, and a silicone resin as raw materials thereof.

Description

Technical Field

[0001] The present disclosure relates to a member and a toner cartridge.

Background Art

[0002] Patent Document 1 discloses a seal member including a sheet-like elastic member and a coating layer. Patent Document 2 discloses a toner seal member including a urethane foam layer and a urethane film layer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, various performances have been required for members such as toner seal members, and the requirements have become stricter. For example, a member having excellent wear resistance is required. An object of the present disclosure is to provide a member having excellent wear resistance. The present disclosure can be realized in the following forms.

Means for Solving the Problems

[0005] 〔1〕A member including a foam layer and a coating layer, wherein the coating layer is exposed, The coating layer is a member made of a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin as raw materials.

Effects of the Invention

[0006] According to the present disclosure, a member excellent in wear resistance can be provided.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0008] Here, desirable examples of the present disclosure are shown. 〔2〕In the member according to 〔1〕, the coating layer contains particles of the silicone resin. 〔3〕The member according to 〔1〕 or 〔2〕 is a toner seal member. 〔4〕A toner cartridge having the member according to any one of 〔1〕 to 〔3〕.

[0009] Hereinafter, the present disclosure will be described in detail. In this specification, for a description using "-" for a numerical range, unless otherwise specified, it is assumed to include the lower limit value and the upper limit value. For example, in the description of "10-20", both the lower limit value "10" and the upper limit value "20" are included. That is, "10-20" has the same meaning as "10 or more and 20 or less".

[0010] 1. Member FIG. 1 is a cross-sectional view of a member 10 according to an embodiment. The member 10 includes a foamed layer 20 and a coating layer 30. In the member 10, the coating layer 30 is exposed. For example, the member 10 is a laminate of the foamed layer 20 and the coating layer 30. For example, the coating layer 30 is an epidermal layer. The member 10 is, for example, a toner seal member.

[0011] [Foamed layer] The foam layer 20 is composed of, for example, a synthetic resin foam or the like. The foam layer 20 is, for example, a polyurethane foam; a polyolefin foam such as a polyethylene foam or a polypropylene foam; a polystyrene foam; a polyamide foam; a polyester foam such as a polyethylene terephthalate (PET) foam or a polybutylene terephthalate (PBT); a (meth)acrylic foam; a phenolic foam; a polyvinyl chloride foam; a polyimide foam; a silicone resin foam; a urea resin foam; a melamine resin foam; an ethylene propylene diene rubber (EPDM) foam; a styrene butadiene rubber (SBR) foam; a nitrile butadiene rubber (NBR) foam; an ethylene-vinyl acetate copolymer (EVA) foam; an ethylene-acrylic acid copolymer foam; an ethylene-ethyl acrylate copolymer (EEA) foam; and the like. Among these foams, from the viewpoint of adhesion to the coating layer 30, a polyurethane foam is more preferable.

[0012] [Coating layer] The coating layer 30 is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin as raw materials. The coating layer 30 can be formed on the surface of the foam layer 20 using a composition containing a urethane prepolymer obtained by reacting a polyol, an isocyanate, and a photopolymerizable monomer having a hydroxyl group, and a silicone resin (more specifically, particles of a silicone resin). The coating layer 30 preferably contains particles of a silicone resin (hereinafter also referred to as a filler).

[0013] The urethane prepolymer has a photoreactive group at its terminal and contains a polyester bond in its polymer skeleton. Here, the photoreactive group is a functional group that can be crosslinked by irradiation with X-rays, electron beams, ultraviolet rays, visible light, or the like. More specifically, the urethane prepolymer is obtained by reacting a reaction product of a polyisocyanate and a polyol with a photoreactive group-containing compound (a compound having a photoreactive group that can react with the terminal of the reaction product). Hereinafter, various raw materials used in the production of the urethane prepolymer will be described.

[0014] [Polyol] The polyol is not particularly limited. It is preferable that the polyol contains at least one of a polyester polyol and a polycarbonate polyol.

[0015] The polyester polyol is an aliphatic dicarboxylic acid (such as succinic acid, adipic acid, sebacic acid, azelaic acid, etc.), an aromatic dicarboxylic acid (such as phthalic acid, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, etc.), an alicyclic dicarboxylic acid (such as hexahydrophthalic acid, hexahydroterephthalic acid, hexahydroisophthalic acid, etc.), or an acid ester or acid anhydride thereof, and ethylene glycol, 1,3 - propylene glycol, 1,2 - propylene glycol, 1,3 - butanediol, 1,4 - butanediol, 1,5 - pentanediol, 1,6 - hexanediol, 3 - methyl - 1,5 - pentanediol (MPD), neopentyl glycol, 1,8 - octanediol, 1,9 - nonanediol, etc., or a polyester polyol such as polypropylene glycol obtained by a dehydration condensation reaction with a mixture thereof; polycaprolactone, polylactone diol obtained by ring - opening polymerization of lactone monomers such as methylvalerolactone, etc. can be mentioned.

[0016] The polyester polyol is preferably one obtained by a condensation reaction of 3 - methyl - 1,5 - pentanediol (MPD) and terephthalic acid, or one obtained by a condensation reaction of 3 - methyl - 1,5 - pentanediol (MPD) and adipic acid.

[0017] Next, the polycarbonate polyol will be described. The polycarbonate polyol is preferably a polycarbonate diol. The polycarbonate diol can be obtained, for example, by reacting a diol component with a carbonylating agent. Examples of the diol component include aliphatic diols, alicyclic diols, ester diols, aromatic diols, etc. Examples of the aliphatic diol include 3-methyl-1,5-pentanediol, 1,6-hexanediol, 1,4-butanediol, diethylene glycol, etc., and one or more of these may be used in combination. Examples of the alicyclic diol include 1,4-cyclohexanediol, etc. Examples of the ester diols include bis(hydroxyethyl) terephthalate, etc. Examples of the aromatic diol include aromatic diols such as alkylene oxide adducts of bisphenol A, etc. Examples of the carbonylating agent include diethyl carbonate, ethylene carbonate, propylene carbonate, dimethyl carbonate, dibutyl carbonate, diphenyl carbonate, diphenyl carbonate, phosgene, etc.

[0018] The polycarbonate polyol is preferably obtained by reacting 3-methyl-1,5-pentanediol (MPD), 1,6-hexanediol, and diethyl carbonate. The ratio of 3-methyl-1,5-pentanediol (MPD) to 1,6-hexanediol is preferably 9.5:0.5 - 8:2, more preferably 9:1.

[0019] The polyol is preferably obtained by the condensation reaction of 3-methyl-1,5-pentanediol (MPD) and adipic acid.

[0020] The hydroxyl value of the polyol is preferably 10 - 1000 mgKOH / g, more preferably 20 - 500 mgKOH / g, and even more preferably 30 - 300 mgKOH / g. Here, the hydroxyl value is the value measured according to JIS-K0070.

[0021] When the total of the polyol, isocyanate, and the photopolymerizable monomer having a hydroxyl group is 100 parts by mass, the polyol is preferably 50 to 90 parts by mass, more preferably 55 to 85 parts by mass, and still more preferably 60 to 80 parts by mass.

[0022] [Isocyanate] Isocyanate (polyisocyanate) is a compound having a plurality of isocyanate groups. For example, aromatic isocyanates such as 4,4-diphenylmethane diisocyanate (MDI), tolylene diisocyanate (TDI), 1,5-naphthalene diisocyanate (NDI), triphenylmethane triisocyanate, xylylene diisocyanate (XDI), alicyclic isocyanates such as isophorone diisocyanate (IPDI), dicyclohexylmethane diisocyanate, aliphatic isocyanates such as hexamethylene diisocyanate (HDI), or modified isocyanates such as free isocyanate prepolymers obtained by the reaction of these with polyols, carbodiimide-modified isocyanates, etc. can be used. Further, these isocyanates may be contained alone or in combination of two or more.

[0023] As the isocyanate, any of aromatic, alicyclic, and aliphatic isocyanates may be used, and it may be a bifunctional isocyanate having two isocyanate groups in one molecule, or a trifunctional or higher-functional isocyanate having three or more isocyanate groups in one molecule, and these may be used alone or in combination of a plurality. For example, bifunctional isocyanates include aromatic ones such as 2,4-tolylene diisocyanate (TDI), 2,6-tolylene diisocyanate (TDI), m-phenylene diisocyanate, p-phenylene diisocyanate, 4,4'-diphenylmethane diisocyanate (MDI), 2,4'-diphenylmethane diisocyanate (MDI), 2,2'-diphenylmethane diisocyanate (MDI), xylylene diisocyanate, 3,3'-dimethyl-4,4'-biphenylene diisocyanate, 3,3'-dimethoxy-4,4'-biphenylene diisocyanate, etc.; alicyclic ones such as cyclohexane-1,4-diisocyanate, isophorone diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, methylcyclohexane diisocyanate, etc.; aliphatic ones such as butane-1,4-diisocyanate, hexamethylene diisocyanate, isopropylene diisocyanate, methylene diisocyanate, lysine isocyanate, etc. Further, examples of polyfunctional isocyanates with two or more functional groups include polymethylene polyphenyl isocyanate (polymeric MDI). Examples of isocyanates with three or more functional groups include 1-methylbenzene-2,4,6-triisocyanate, 1,3,5-trimethylbenzene-2,4,6-triisocyanate, biphenyl-2,4,4'-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, methyldiphenylmethane-4,6,4'-triisocyanate, 4,4'-dimethyldiphenylmethane-2,2',5,5'-tetraisocyanate, triphenylmethane-4,4',4''-triisocyanate, etc. Also, the isocyanate is not limited to one type and may be one or more types. For example, one type of aliphatic isocyanate and two types of aromatic isocyanates may be used in combination. Further, the functional group number of the isocyanate preferably ranges from 2.0 to 2.8.

[0024] In addition, the isocyanate index (INDEX) of the urethane prepolymer is preferably 80 - 150, more preferably 90 - 130. The isocyanate index is the equivalent ratio of the isocyanate groups of the isocyanate to the reactive groups such as hydroxyl groups that can react with the isocyanate in the polyols and the photopolymerizable monomers having hydroxyl groups. Therefore, when the value is less than 100, it means that the reactive groups such as hydroxyl groups are in excess of the isocyanate groups, and when it exceeds 100, it means that the isocyanate groups are in excess of the reactive groups such as hydroxyl groups.

[0025] When the total of the polyol, the isocyanate, and the photopolymerizable monomer having a hydroxyl group is 100 parts by mass, the isocyanate is preferably 5 parts by mass or more and 40 parts by mass or less, more preferably 10 parts by mass or more and 35 parts by mass or less, and still more preferably 15 parts by mass or more and 30 parts by mass or less.

[0026] [Photopolymerizable monomer having a hydroxyl group] The photopolymerizable monomer having a hydroxyl group is a compound having a photoreactive group capable of reacting with the isocyanate. Examples of the "photoreactive group" include an alkenyl group, an alkynyl group, a vinyl group, an acrylic group, a methacrylate group, an allyl group, etc. The "photoreactive group" preferably contains an ethylenically unsaturated bond (-C=C-). As such a "photoreactive group", a methacrylate group (CH2=C(CH3)-COO-) and an acrylate group (CH2=CH-COO-) are suitable.

[0027] The photopolymerizable monomer having a hydroxyl group is a compound having one or more hydroxyl groups in one molecule. For example, monomers having an allyl ether group such as allyl ether glycol and hydroxyethyl allyl ether, monomers having a vinyl ether group such as 2-hydroxyethyl vinyl ether, diethylene glycol monovinyl ether, and 4-hydroxybutyl vinyl ether, monomers having a (meth)acrylate group such as hydroxyethyl acrylate, hydroxypropyl acrylate, 4-hydroxybutyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, and 2-hydroxypropyl methacrylate can be mentioned. Note that "(meth)acrylate" means acrylate and / or methacrylate. The alkyl (meth)acrylate having a hydroxyl group as a photopolymerizable monomer may be used alone or in combination of two or more.

[0028] As the photopolymerizable monomer having a hydroxyl group, hydroxyethyl (meth)acrylate is preferable, and 2-hydroxyethyl acrylate (HEA) is more preferable.

[0029] When the total of the polyol, isocyanate, and the photopolymerizable monomer having a hydroxyl group is 100 parts by mass, the photopolymerizable monomer having a hydroxyl group is preferably 2 to 30 parts by mass, more preferably 5 to 25 parts by mass, and still more preferably 8 to 20 parts by mass.

[0030] The hydroxyl value of the photopolymerizable monomer having a hydroxyl group is preferably 10 - 1000 mgKOH / g, more preferably 20 - 500 mgKOH / g, and still more preferably 30 - 300 mgKOH / g.

[0031] [Particles of silicone resin] The particles of the silicone resin are not particularly limited. The shape of the particles of the silicone resin may be substantially spherical, for example, truly spherical, ellipsoidal of revolution, etc., and more preferably truly spherical.

[0032] The average particle diameter of the silicone resin particles is the particle diameter (median diameter) at the integrated value of 50% in the volume-based particle size distribution determined by the laser diffraction / scattering method. The average particle diameter of the silicone resin particles is preferably 0.1 μm or more and 50 μm or less, more preferably 1 μm or more and 30 μm or less, and still more preferably 3 μm or more and 20 μm or less.

[0033] The content of the silicone resin particles in the coating layer is preferably 1% by mass or more and 60% by mass or less, more preferably 10% by mass or more and 50% by mass or less, and still more preferably 15% by mass or more and 40% by mass or less.

[0034] The silicone resin particles are preferably distributed substantially uniformly throughout the entire coating layer 30. At least a part of the silicone resin particles is preferably exposed on the surface of the coating layer 30.

[0035] [Initiator] The composition may contain an initiator used for the photopolymerization reaction. Examples of the initiator include compounds such as acetophenone-based, benzophenone-based, and thioxanthone-based compounds. Examples of the acetophenone-based compounds include 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]phenyl}-2-methyl-propan-1-one, 1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl-1-propan-1-one, 2,2-dimethoxy-2-phenylacetophenone, 1,1-dichloroacetophenone, 4-(1-t-butyldioxy-1-methylethyl)acetophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholino-propan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 4-(2-hydroxyethoxy)phenyl-(2-hydroxy-2-propyl)ketone, 1-hydroxycyclohexylphenylketone, 2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propanone oligomer, and the like.

[0036] Examples of benzophenone-based compounds include 4-(1-t-butyldioxy-1-methylethyl)benzophenone, 3,3’,4,4’-tetrakis(t-butyldioxycarbonyl)benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4’-methyl-diphenyl sulfide, 3,3’,4,4’-tetra(t-butylperoxylcarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, 4-benzoyl-N,N-dimethyl-N-[2-(1-oxo-2-propenyloxy)ethyl]benzenemethanaminium bromide, (4-benzoylbenzyl)trimethylammonium chloride, etc. Examples of thioxanthone-based compounds include 2,4-dimethylthioxanthone, 2,4-diisopropylthioxanthone, 2-chlorothioxanthone, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone, 2-(3-dimethylamino-2-hydroxy)-3,4-dimethyl-9H-thioxanthone-9-one mesochloride, etc.

[0037] [Monomer] The composition may contain a photopolymerizable monomer. Examples of the monomer include compounds having an alkenyl group, an alkynyl group, a vinyl group, an acrylic group, a methacrylate group, an allyl group, etc. Examples of the monomer include ethyl (meth)acrylate, methyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, sec-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, tridecyl (meth)acrylate, cyclohexyl (meth)acrylate, n-lauryl (meth)acrylate, dodecyl (meth)acrylate, stearyl (meth)acrylate, isobornyl methacrylate, etc. The monomer is preferably a compound having one or more ethylenically unsaturated groups in the molecule.

[0038] When the total of the polyol, the isocyanate, and the photopolymerizable monomer having a hydroxyl group is 100 parts by mass, the monomer is preferably 5.0 to 60.0 parts by mass, more preferably 10.0 to 50.0 parts by mass, and still more preferably 20.0 to 40.0 parts by mass.

[0039] [Other Components] The composition may contain other components other than the above as needed. Examples of the other components include tackifiers, curing accelerators, fillers, coupling agents, rust preventives, antioxidants, ultraviolet absorbers, thickeners, plasticizers, antibacterial agents, and colorants.

[0040] [Elongation of Coating Layer 30] The elongation of the coating layer 30 is measured by a tensile test in accordance with JIS K 6251 2010, and is preferably 5% or more, more preferably 10% or more, and still more preferably 15% or more.

[0041] [Tensile Strength of Coating Layer 30] The breaking strength of the coating layer 30 is measured by a tensile test in accordance with JIS K 6251 2010, and is preferably 5 N / mm 2 or more, more preferably 10 N / mm 2 or more, and even more preferably 15 N / mm 2 or more.

[0042] In addition, various numerical ranges described in the specification can be arbitrarily combined with their upper and lower limits, and all of these combinations are described in this specification as preferred numerical ranges.

[0043] 2. Manufacturing method of the member The manufacturing process of the member 10 includes an adhesion step of attaching the raw material of the coating layer 30 to the foam layer 20, and an irradiation step of irradiating light onto the raw material attached in the adhesion step to cure the raw material by a photopolymerization reaction.

[0044] Specifically, the above-described composition (mixed raw material) for the coating layer 30 is applied to the surface of the foam layer 20 using, for example, a gravure coater, and after coating, it is irradiated with ultraviolet rays to be cured (reacted).

[0045] The coating layer 30 is formed on the surface of the foam layer 20 using, for example, a composition obtained by synthesizing a urethane prepolymer from a polyol, an isocyanate, and a photopolymerizable monomer having a hydroxyl group, and then mixing a silicone resin, an initiator, a monomer, etc.

[0046] For the synthesis of the urethane prepolymer, a known method can be used. For example, a compound having two or more hydroxyl groups at its terminal such as a polyol is charged into a closed reaction kettle equipped with a stirrer, a condenser, a vacuum dehydration device, and a nitrogen gas flow device, dehydrated under reduced pressure, and then an isocyanate is added and reacted at 70°C - 100°C for 3 hours - 8 hours under a nitrogen gas stream. In the synthesis of the urethane prepolymer, a urethanization catalyst such as an organotin compound or an amine may be used as necessary.

[0047] 3. Toner cartridge FIG. 2 is a partial cross-sectional view of a toner cartridge 50 according to an embodiment. The toner cartridge 50 includes a container 60, a shutter 70, and toner seal members 110 and 210. The toner seal members 110 and 210 correspond to an example of the member 10. The container 60 stores toner. The container 60 includes a toner storage portion 62 and a discharge portion 64. The toner storage portion 62 stores toner. The toner storage portion 62 is cylindrical and is rotatably connected to the discharge portion 64. The discharge portion 64 is provided with a discharge port 66 for discharging toner.

[0048] The shutter 70 is slidably supported by the discharge portion 64 near the discharge port 66 along the outer surface of the discharge portion 64. The toner seal member 110 is assembled to the shutter 70. The toner seal member 110 is disposed on the discharge portion 64 side with respect to the shutter 70. The coating layer (see the coating layer 30 in FIG. 1) is disposed so as to be exposed on the outer surface side of the discharge portion 64.

[0049] As shown in FIGS. 2 and 3, the toner seal member 110 slides along the outer surface of the discharge portion 64 as the shutter 70 slides. When the shutter 70 slides, the discharge port 66 is opened and closed by the toner seal member 110. The toner seal member 110 (more specifically, the coating layer) slides with respect to the outer surface of the discharge portion 64. The exposed surface 32 of the coating layer serves as a sliding surface with respect to the outer surface of the discharge portion 64.

[0050] The toner seal member 210 is ring-shaped and is sandwiched between the opening end of the toner storage portion 62 and the opening end of the discharge portion 64. The toner seal member 210 seals the connection portion between the discharge portion 64 and the toner storage portion 62. The surface of the toner seal member 210 on the side of the foam layer 20 is fixed to the discharge portion 64 via an adhesive layer (not shown). The surface of the toner seal member 210 on the side of the coating layer (see the coating layer 30 in FIG. 1) is in contact with the toner storage portion 62 in a slidable state with respect to the toner storage portion 62. The toner seal member 210 is in a state of being compressed in the thickness direction between the discharge portion 64 and the toner storage portion 62. The exposed surface 34 of the coating layer serves as a sliding surface with respect to the opening end of the toner storage portion 62. Note that the exposed surface of the coating layer may be configured to serve as a sliding surface with respect to the opening end of the discharge portion 64.

[0051] 4. Operations and Effects of this Embodiment In this embodiment, by using a polyol, an isocyanate, and a photopolymerizable monomer having a hydroxyl group as raw materials for the coating layer, a member with appropriate stretchability, improved strength, and excellent wear resistance can be provided. Moreover, by including a silicone resin in the raw materials of the coating layer, a member with excellent wear resistance, appropriate flexibility, and excellent slidability can be provided.

Examples

[0052] Next, the above embodiment will be described in more detail with reference to examples and comparative examples. 1. Fabrication of Members In Examples 1-10 and Comparative Examples 1-4, compositions were prepared by blending at the ratios shown in Tables 1 and 2 and were adhered to the foam layer. Thereafter, the compositions were irradiated with light to cure the compositions by a photopolymerization reaction, thereby fabricating the coating layers. The numerical values of each component without a unit description excluding the indices in Tables 1 and 2 represent parts by mass.

[0053] The manufacturing methods of the members of Examples 1-10 and Comparative Examples 2 and 3 will be specifically described. After synthesizing a urethane prepolymer from a polyol, an isocyanate, and a photopolymerizable monomer having a hydroxyl group, a coating layer was formed on the surface of the foam layer using a composition obtained by mixing a silicone resin, an initiator, and a monomer. Specifically, the coating layer was formed by applying the mixed composition onto the surface of the foam layer using a gravure coater, and then irradiating with ultraviolet rays to cure (react).

[0054] The synthesis of the urethane prepolymer was carried out, for example, by charging a compound having two or more hydroxyl groups at the terminal such as a polyol into a closed reaction kettle equipped with a stirrer, a condenser, a vacuum dehydration device, and a nitrogen gas flow device, dehydrating under reduced pressure, and then blending an isocyanate and reacting at 70°C - 100°C for 3 hours - 8 hours under a nitrogen gas stream.

[0055]

Table 1

[0056]

Table 2

[0057] Various information regarding the components in Tables 1 and 2 is shown in Table 3 below. In Table 3, the notations in parentheses in the "Type" column for Polyols 1-5 represent the raw materials of each Polyol 1-5. For example, the polyester polyol of Polyol 1 uses MPD and phthalic acid as raw materials. "Mn" in Table 3 represents the number average molecular weight. Here, the number average molecular weight was measured by gel permeation chromatography (GPC) method using polystyrene as a standard polymer. The "Molecular weight" in Table 3 is obtained by summing the atomic weights of the atoms constituting the molecule. The column of "OHV" in Table 3 indicates the hydroxyl value. The specific contents not described in the raw materials in Table 3 are shown below. Polyol 1: Polyester polyol (manufactured by Kuraray Co., Ltd., P-2020) Polyol 2: Polyester polyol (manufactured by Kuraray Co., Ltd., P-1020) Polyol 3: Polyester polyol (manufactured by Kuraray Co., Ltd., P-520) Polyol 4: Polycarbonate polyol (manufactured by Kuraray Co., Ltd., C-3090) Polyol 5: Polyester polyol (manufactured by Kuraray Co., Ltd., P-1010) Initiator 1: IRGACURE 127 manufactured by BASF The fillers of the raw materials in Tables 1 and 2 are particles of silicone resin with an average particle size of 6 μm (manufactured by Momentive Performance Materials Japan Co., Ltd., Tospearl 2000B). The content of the filler (particles of silicone resin) represents the content in the coating layer.

[0058]

Table 3

[0059] 2. Evaluation Next, the following evaluations were performed on the members of each of the obtained examples and comparative examples.

[0060] [Viscosity] The viscosity after mixing each raw material was measured at 25°C using a B-type viscometer. Spindle No. 63 was used and the measurement was performed at a rotational speed of 30 rpm. The results are shown in the column of "(mPa·s)@25°C" of "Viscosity" in Tables 1 and 2. The evaluation was carried out in the following two steps. Evaluation score 1: Less than 10,000 0: 10,000 or more

[0061] [Pencil hardness] In accordance with JIS K5600-5-4:1999, under the condition of a 200 g load, the pencil hardness of the coating layer surface was measured using the pencil "Uni (registered trademark)" of Mitsubishi Pencil Co., Ltd. The results are shown in the column of "Pencil hardness" in Tables 1 and 2.

[0062] [Elongation] The compositions formulated at the ratios in Tables 1 and 2 were coated onto a release PET film using a roll coater to a thickness of 0.1 mm. A release PET film was placed on the surface of the coated composition and cured (reacted) by ultraviolet irradiation. A dumbbell-shaped No. 3 sample was punched out from the cured composition, the release PET film was peeled off, and a tensile test was conducted in accordance with JIS K 6251 2010 to measure the elongation at break. The results are shown in the column of "Elongation (%)" in Tables 1 and 2.

[0063] [Tensile strength] The compositions formulated at the ratios in Tables 1 and 2 were coated onto a release PET film using a roll coater to a thickness of 0.1 mm. A release PET film was placed on the surface of the coated composition and cured (reacted) by ultraviolet irradiation. A dumbbell-shaped No. 3 sample was punched out from the cured composition, the release PET film was peeled off, and a tensile test was conducted in accordance with JIS K 6251 2010 to measure the tensile strength. The results are shown in the column of "Tensile strength (N / mm 2 )" in Tables 1 and 2.

[0064] [Flexural resistance] Members of each example and each comparative example with double-sided tape attached to the side opposite to the sliding surface (the surface of the coating layer) were attached to a 90° right angle part. The surface state of the coating layer (presence or absence of cracks, etc.) was visually confirmed. The evaluation was based on the following criteria. "A": The surface state is good (no cracks, etc.) "B": The surface state is poor (there are cracks, etc.) The evaluation was conducted in the following two steps. Evaluation score 1: The evaluation is "A" 0: The evaluation is "B"

[0065] [Wear resistance] Ring-shaped samples with an inner diameter of 33 mm and an outer diameter of 39 mm were prepared by punching out members of each example and each comparative example with a double-sided tape attached to the side opposite to the sliding surface (the surface of the coating layer). The samples were attached to a jig (a jig corresponding to the toner storage part 62 and the discharge part 64 shown in Fig. 2) at a compression rate of 42% and rotated 180° every 3 seconds at a rotation speed of 50 rpm. The surface state (presence or absence of cracks, etc.) of the coating layer was visually confirmed. When one cycle was defined as 180° rotation, the number of cycles at which the surface state became defective (occurrence of cracks, etc.) was shown in the "Cycle" column of "Wear resistance" in Tables 1 and 2. The evaluation was conducted in the following five levels. Evaluation score 4: The surface state becomes defective (occurrence of cracks, etc.) after 100,000 cycles or more. 3: The surface state becomes defective (occurrence of cracks, etc.) after 50,000 cycles or more and less than 100,000 cycles. 2: The surface state becomes defective (occurrence of cracks, etc.) after 10,000 cycles or more and less than 50,000 cycles. 1: The surface state becomes defective (occurrence of cracks, etc.) after 1,000 cycles or more and less than 10,000 cycles. 0: The surface state becomes defective (occurrence of cracks, etc.) after less than 1,000 cycles.

[0066] [Comprehensive evaluation] Based on the evaluation scores of viscosity, bending resistance, and wear resistance, each example and each comparative example were comprehensively evaluated. The evaluation was based on the following criteria. "A": The total score is 6 points. "B": The total score is 5 points. "C": The total score is 4 points. "D": The total score is 3 points or less.

[0067] 3. Results Examples 1 - 10 satisfy the following requirement (a). Comparative examples 1 - 4 do not satisfy the following requirement (a). · Requirement (a): The coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin as raw materials. In Examples 1-10, the "evaluation score" of "abrasion resistance" was 2-4. In Comparative Examples 1-4, the "evaluation score" of "abrasion resistance" was 1. In Examples 1-10, by satisfying the above requirement (a), the abrasion resistance could be enhanced. In Examples 1-10, the "overall evaluation" was "A" - "C". In Comparative Examples 1-4, the "overall evaluation" was "D". In Examples 1-10, by satisfying the above requirement (a), the balance among viscosity, flexural resistance, and abrasion resistance was good.

[0068] 4. Effects of the Examples According to the above examples, a member with excellent abrasion resistance could be provided. A member with a good balance among viscosity, flexural resistance, and abrasion resistance could be provided.

[0069] The present disclosure is not limited to the embodiments detailed above, and various modifications or changes are possible within the scope shown in the claims of the present disclosure.

Explanation of Reference Numerals

[0070] 10: Member 20: Foam layer 30: Coating layer 32, 34: Exposed surface 50: Toner cartridge 60: Container 62: Toner storage part 64: Discharge part 66: Discharge port 70: Shutter 110, 210: Toner seal member

Claims

1. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin, and is a toner sealing member.

2. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin, and wherein the polyol includes a polyester polyol.

3. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin, and wherein the photopolymerizable monomer having a hydroxyl group includes 2-hydroxyethyl acrylate.

4. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin, wherein the coating layer contains particles of the silicone resin, and wherein the content of the particles of the silicone resin in the coating layer is 20% by mass or more and 60% by mass or less.

5. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, a silicone resin, and a photopolymerizable monomer having no hydroxyl group, and wherein the photopolymerizable monomer having no hydroxyl group includes one or more selected from the group consisting of isobornyl acrylate, phenoxyethyl acrylate, and dimethylacrylamide.

6. A member comprising a foamed layer and a coating layer, wherein the coating layer is exposed, wherein the coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin, Attached to the jig at a compression ratio of 42%, rotated 180° every 3 seconds at a rotational speed of 50 rpm so that the coating layer slides with respect to the jig, when one cycle is defined as a 180° rotation, the number of cycles until the surface state becomes defective is 10,000 cycles or more, A member in which the elongation of the coating layer is 5% or more as measured by a tensile test conforming to JIS K 6251 2010. **Claim 7** A member including a foam layer and a coating layer, wherein the coating layer is exposed, The coating layer is made from a polyol, an isocyanate, a photopolymerizable monomer having a hydroxyl group, and a silicone resin as raw materials, Attached to the jig at a compression ratio of 42%, rotated 180° every 3 seconds at a rotational speed of 50 rpm so that the coating layer slides with respect to the jig, when one cycle is defined as a 180° rotation, the number of cycles until the surface state becomes defective is 10,000 cycles or more, A member in which the breaking strength of the coating layer is 5 N / mm2 or more as measured by a tensile test conforming to JIS K 6251 2010. **Claim 8** A toner cartridge having the member according to any one of Claims 1 to 7.

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