WO2023204087A1 - マイクロ流路デバイス及びその製造方法 - Google Patents
マイクロ流路デバイス及びその製造方法 Download PDFInfo
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- WO2023204087A1 WO2023204087A1 PCT/JP2023/014591 JP2023014591W WO2023204087A1 WO 2023204087 A1 WO2023204087 A1 WO 2023204087A1 JP 2023014591 W JP2023014591 W JP 2023014591W WO 2023204087 A1 WO2023204087 A1 WO 2023204087A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00349—Creating layers of material on a substrate
- B81C1/00373—Selective deposition, e.g. printing or microcontact printing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N37/00—Details not covered by any other group of this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/12—Specific details about manufacturing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/12—Specific details about materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/12—Specific details about materials
- B01L2300/126—Paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/16—Surface properties and coatings
- B01L2300/161—Control and use of surface tension forces, e.g. hydrophobic, hydrophilic
- B01L2300/165—Specific details about hydrophobic, oleophobic surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0406—Moving fluids with specific forces or mechanical means specific forces capillary forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/08—Regulating or influencing the flow resistance
- B01L2400/084—Passive control of flow resistance
- B01L2400/088—Passive control of flow resistance by specific surface properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/05—Microfluidics
- B81B2201/058—Microfluidics not provided for in B81B2201/051 - B81B2201/054
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C2201/00—Manufacture or treatment of microstructural devices or systems
- B81C2201/01—Manufacture or treatment of microstructural devices or systems in or on a substrate
- B81C2201/0174—Manufacture or treatment of microstructural devices or systems in or on a substrate for making multi-layered devices, film deposition or growing
- B81C2201/0183—Selective deposition
- B81C2201/0185—Printing, e.g. microcontact printing
Definitions
- the present disclosure relates to a microchannel device in which a microchannel is formed inside a porous base material and a method for manufacturing the same.
- microchannel devices that utilize micro-sized microchannels to efficiently perform biochemical analyzes (small amounts, quickly, and easily) within a single chip has attracted attention in a wide range of fields. ing. Specifically, it is attracting attention in various fields such as biochemistry research, medicine, drug discovery, health care, the environment, and food. Among these, paper-based microanalysis chips have the advantage of being lighter and lower in cost than conventional devices, not requiring the use of a power source, and also being easily discarded. For this reason, it is expected to be used as a testing device for medical activities in developing countries and remote areas where medical facilities are lacking, as well as at disaster sites, as well as at airports and other locations where the spread of infectious diseases must be stopped at the border. Furthermore, because it is inexpensive and easy to handle, it is attracting attention as a healthcare device that can manage and monitor one's own health condition.
- the microchannels fabricated using these photolithography techniques have extremely high precision, their manufacturing costs are extremely high, and they are also difficult to incinerate, making them difficult to dispose of. .
- ancillary equipment such as a syringe pump is required to send the test solution into the flow path, it is limited to use in well-equipped environments and is mainly used at biochemical research institutions. It's here.
- paper microanalysis chips use inexpensive materials such as paper and cloth as the base material, and can drive specimens and test solutions by utilizing the capillary phenomenon of the material itself. Therefore, it can be used at low cost and in an environment without electricity. In addition, it is easy to carry (distribute) and is highly disposable (disposal can be completed by simply burning it). Furthermore, since no maintenance is required for the equipment, anyone (even elderly people or children with no knowledge) can easily perform point-of-care diagnosis at low cost, anywhere (even in places without power). It becomes possible to realize this. Therefore, research and development of paper microchannel devices for various infectious diseases, specific diseases, and healthcare (chronic disease management, health management) is currently underway at research institutions around the world.
- the flow channels are designed to prevent liquid from seeping into the channel walls and to suppress swelling of the channel walls due to water absorption when the device is used in a high humidity environment.
- High hydrophobicity is required for the material that forms it.
- the hydrophobicity of the side surface of the channel wall on the channel side is important, and has a large effect on the flow rate of the sample and the bleeding into the channel wall.
- Patent Document 1 proposes a microchannel device in which channel walls are formed in a porous layer (paper, etc.) using a wax printer using phase change ink.
- ink when using ink, it tends to smear, making it difficult to form fine channels that provide a stable flow rate.
- microchannel devices without a protective layer are susceptible to cracking and may cause sample leakage, and therefore cannot be used in devices with curvature, such as roll-shaped devices.
- One aspect of the present disclosure aims to provide a microchannel device in which channel walls have high hydrophobicity and high cracking resistance.
- Another aspect of the present disclosure aims to provide a method for manufacturing a microchannel device in which channel walls have high hydrophobicity and high cracking resistance.
- a microchannel device in which a channel sandwiched between channel walls is formed inside a porous base material,
- the channel wall forming material forming the channel wall contains a thermoplastic resin and wax,
- the abundance ratio of wax on the surface side of the porous base material in the channel wall is X
- the abundance ratio of wax inside the porous base material is Y
- X ⁇ Y In the entire channel wall forming material, the content ratio of the wax is 13.1% by mass or more and 70.0% by mass or less
- the SP value of the wax is SP (W) [cal/cm 3 ] 1/2
- the SP value of the thermoplastic resin is SP (B) [cal/cm 3 ] 1/2
- SP(B)-SP(W) ⁇ 0.6 A microchannel device is provided.
- a method for manufacturing a microchannel device in which a channel sandwiched between channel walls is formed inside a porous base material comprising: a step of placing a channel wall forming material containing a thermoplastic resin and wax on the surface of the porous base material using an electrophotographic method to form a channel pattern on the surface of the porous base material; melting the wax contained in the channel pattern by heat and allowing the wax to penetrate into the porous base material to form a channel wall inside the porous base material; has In the entire channel wall forming material, the content ratio of the wax is 13.1% by mass or more and 70.0% by mass or less, When the SP value of the wax is SP (W) [cal/cm 3 ] 1/2 , and the SP value of the thermoplastic resin is SP (B) [cal/cm 3 ] 1/2 , SP(B)-SP(W) ⁇ 0.6 A method for manufacturing a microchannel device is provided.
- microchannel device in which channel walls have high hydrophobicity and high cracking resistance. According to another aspect of the present disclosure, it is possible to provide a microchannel device in which channel walls have high hydrophobicity and high cracking resistance.
- FIG. 2 is a schematic cross-sectional view showing a state in which flow path wall forming particles T in Example 1 are placed on the surface of a porous base material S1 (before heating).
- FIG. 3 is a schematic cross-sectional view showing a state in which molten wax has penetrated into the inside of the porous base material S1 (after heating).
- FIG. 2 is a partially enlarged cross-sectional view of a microchannel device formed by penetration of molten wax.
- 1 is a configuration diagram of an image forming unit 100 in Example 1.
- FIG. 3 is a configuration diagram of a process cartridge P in Example 1.
- FIG. 2 is a block diagram showing a schematic control mode of the image forming unit 100 in Example 1.
- FIG. 3 is a flow path pattern diagram in Example 1.
- FIG. 3 is a schematic cross-sectional view showing a state in which molten wax has penetrated into the inside of the porous base material S1 (after heating).
- FIG. 2 is a partially enlarged cross-sectional view of a microchannel device formed by penetration of molten wax.
- FIG. 2 is a schematic cross-sectional view showing a state in which colored water is dropped into a channel of a device in which a channel wall is formed.
- FIG. 3 is a schematic cross-sectional view showing a state in which colored water is dropped into a channel of a device with a channel wall removed.
- a channel sandwiched between channel walls is formed inside a porous base material.
- the channel wall contains a thermoplastic resin and wax.
- the channel wall includes an inner part of the porous base material formed by the components that have soaked into the porous base material, and a part on the surface of the porous base material that is formed by the components present on the surface of the porous base material. This includes both formed parts.
- the SP value of the wax is lower than the SP value of the thermoplastic resin.
- the abundance ratio of the wax is higher inside the porous base material than on the surface side of the porous base material.
- Existence ratio of wax means the area ratio occupied by wax in the channel wall forming material portion when observing the cross section of the microchannel device.
- the surface side of the porous base material means the outside (air layer side) from the outermost surface of the porous base material (the interface between the porous base material and the air layer).
- the porous base material when in contact with something, it means the interface between the porous base material and the member that is in contact with it.
- “Inside the porous base material” means the inside from the outermost surface of the porous base material (the porous base material side).
- the abundance ratio of the wax is higher inside the porous base material than on the surface side of the porous base material means that the abundance ratio of wax on the surface side of the porous base material is X, and When the abundance ratio of wax existing in the pores inside the material is Y, X ⁇ Y It means that.
- a channel pattern formed by placing particles for forming channel walls on the surface of a porous base material using an electrophotographic method is melted by heat and infiltrated into the inside of the porous base material. As a result, a channel wall is formed inside the porous base material.
- the channel wall forming material contains a thermoplastic resin and wax (oil).
- a channel pattern is formed on the surface of a porous substrate using channel wall forming particles made of a channel wall forming material, and the channel pattern is melted by heat to form the channel wall forming material into the porous pores. permeate into the interior of the solid base material to form channel walls.
- the content ratio of wax is 13.1% by mass or more and 70.0% by mass or less.
- the content ratio of wax in the channel wall forming material means the mass ratio of wax contained in the entire channel wall forming material. That is, it is the mass ratio of wax in the entire channel wall forming material existing in the pores inside the porous base material and the channel wall forming material existing on the surface of the porous base material.
- the wax content ratio is set to the above range is that if the wax content ratio is less than 13.1% by mass, the amount of wax W supplied to the porous base material S1 is insufficient, making it impossible to form a channel wall. It is from. Further, if the wax content exceeds 70.0% by mass, it is difficult to form a channel pattern in an electrophotographic image forming process.
- the content ratio of wax in the channel wall forming material can be measured as follows. A channel portion where a channel wall is not formed, that is, a portion of the porous substrate S1 itself, and a portion where a channel wall is formed are each cut out into 1 cm square pieces, and 10 sheets are prepared. Next, hexane is dropped onto the portion where the channel wall is formed and suctioned, and the wax is dissolved in hexane and removed. The mass of wax is calculated from the difference in mass before and after this hexane cleaning. Next, the mass of the thermoplastic resin is calculated from the mass difference between the mass after removing the wax and the mass of the porous base material S1 itself. The content ratio can be calculated from the calculated mass of wax and the mass of thermoplastic resin.
- the channel wall can have good hydrophobicity.
- thermoplastic resin B and wax W become more compatible with each other, making it difficult for wax W to separate from the channel wall forming material. This is because a sufficient amount of wax W cannot reach inside the porous base material S1, and the flow channel wall cannot be formed.
- the wax W melted by heat is liberated and comes out to the outside of the channel wall forming particles T. This is because wax W with a lower SP value is more likely to exist on the outermost surface side of channel wall forming particles T due to the difference in surface free energy between thermoplastic resin B and wax W. Therefore, by heating, the wax W is separated from the thermoplastic resin B and actively penetrates into the porous base material S1, while forming a thermoplastic resin layer on the surface of the porous base material S1. becomes possible.
- the channel walls made of wax W formed inside the porous base material S1 have higher water repellency due to the characteristics of the wax W, and liquids such as specimens are kept outside the channel 82 (channel Reduces the risk of leakage (inside the wall).
- thermoplastic resin is not particularly limited, and the following known thermoplastic resins can be used. Polyester resin, vinyl resin, acrylic resin, styrene acrylic resin, polyethylene, polypropylene, polyolefin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, etc.
- thermoplastic resins polyester resins or styrene-acrylic resins are preferred, and styrene-acrylic resins are more preferred.
- polyester resin a known polyester resin can be used.
- polyester resin examples include the following methods. Dibasic acids and their derivatives and dihydric alcohols are essential, and trivalent or higher polybasic acids and their derivatives (carboxylic acid halides, esters, acid anhydrides), monobasic acids, trivalent or higher valences are optionally required. A method of dehydrating and condensing alcohol, monohydric alcohol, etc.
- dibasic acids include the following. Aliphatic dibasic acids such as maleic acid, fumaric acid, itaconic acid, oxalic acid, malonic acid, succinic acid, dodecylsuccinic acid, dodecenylsuccinic acid, adipic acid, azelaic acid, sebacic acid, decane-1,10-dicarboxylic acid; phthalate acids, aromatic dibasic acids such as tetrahydrophthalic acid, hexahydrophthalic acid, tetrabromophthalic acid, tetrachlorophthalic acid, het acid, hymic acid, isophthalic acid, terephthalic acid, 2,6-naphthalene dicarboxylic acid; etc. .
- Aliphatic dibasic acids such as maleic acid, fumaric acid, itaconic acid, oxalic acid, malonic acid, succinic acid, dodecylsuccinic acid, do
- examples of derivatives of dibasic acids include carboxylic acid halides, esterification products, and acid anhydrides of the above aliphatic dibasic acids and aromatic dibasic acids.
- dihydric alcohols include the following. Ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, triethylene glycol, neopentyl Acyclic aliphatic diols such as glycols; bisphenols such as bisphenol A and bisphenol F; alkylene oxide adducts of bisphenol A such as ethylene oxide adducts of bisphenol A and propylene oxide adducts of bisphenol A; xylylene diglycol Aralkylene glycols such as; etc.
- trivalent or higher polybasic acids and their anhydrides examples include trimellitic acid, trimellitic anhydride, pyromellitic acid, and pyromellitic anhydride.
- polymerizable monomers that can form the styrene acrylic resin include the following.
- Styrenic monomers such as styrene, ⁇ -methylstyrene, and divinylbenzene; such as methyl acrylate, butyl acrylate, methyl methacrylate, 2-hydroxyethyl methacrylate, t-butyl methacrylate, and 2-ethylhexyl methacrylate.
- unsaturated carboxylic acid esters unsaturated carboxylic acids such as acrylic acid and methacrylic acid; unsaturated dicarboxylic acids such as maleic acid; unsaturated dicarboxylic acid anhydrides such as maleic anhydride; nitrites such as acrylonitrile Vinyl monomers; halogen-containing vinyl monomers such as vinyl chloride; nitro vinyl monomers such as nitrostyrene; etc. These can be used alone or in combination.
- a crosslinking agent may be added to the styrene-acrylic resin when forming a copolymer of a styrene-based polymerizable monomer and an acrylic ester or a methacrylic ester. Examples include:
- polyfunctional crosslinking monomers include the following. Pentaerythritol triacrylate, trimethylolethane triacrylate, trimethylolpropane triacrylate, tetramethylolmethane tetraacrylate, oligoester acrylate and its methacrylate, 2,2-bis(4-methacryloxy polyethoxyphenyl)propane, diacryl phthalate, Triallyl cyanurate, triallyl isocyanurate, triallyl trimellitate, diarylchlorendate.
- the preferable range of the weight average molecular weight (Mw) of the binder resin is 3,000 or more and 500,000 or less, more preferably 5,000 or more and 300,000 or less, and still more preferably 7,500 or more and 100,000 or more. ,000 or less.
- the storage elastic modulus G' is as follows at the heating process temperature: G'>14Pa (160°C in Example 1) It is preferable that
- the storage modulus G' represents the elasticity of an object, and the lower it is, the greater the deformation against a constant load.
- a low storage modulus G' means that the porous substrate S1 is more easily permeated when a permeation force due to capillarity acts on the porous base material S1.
- wax -Wax (oil)-
- the material used as the wax in the present disclosure is not particularly limited, and the following known waxes used in toners can be used.
- Esters of monohydric alcohols and aliphatic carboxylic acids such as behenyl behenate, stearyl stearate, palmityl palmitate, or esters of monohydric carboxylic acids and aliphatic alcohols; dibehenyl sebacate, hexanediol dibehenate.
- esters of dihydric alcohols and aliphatic carboxylic acids or esters of dihydric carboxylic acids and aliphatic alcohols; esters of trihydric alcohols and aliphatic carboxylic acids, such as glycerin tribehenate; Esters of trivalent carboxylic acids and aliphatic alcohols; esters of tetravalent alcohols and aliphatic carboxylic acids such as pentaerythritol tetrastearate and pentaerythritol tetrapalmitate, or esters of tetravalent carboxylic acids and aliphatic alcohols.
- Ester ester of hexavalent alcohol and aliphatic carboxylic acid such as dipentaerythritol hexastearate and dipentaerythritol hexapalmitate, or ester of hexavalent carboxylic acid and aliphatic alcohol; of polyglycerol behenate esters of polyhydric alcohols and aliphatic carboxylic acids, or esters of polyhydric carboxylic acids and aliphatic alcohols; natural ester waxes such as carnauba wax and rice wax; petroleum waxes such as paraffin wax, microcrystalline wax, and petrolatum.
- ester waxes such as carnauba wax and rice wax
- petroleum waxes such as paraffin wax, microcrystalline wax, and petrolatum.
- hydrocarbon waxes and their derivatives by the Fischer-Tropsch process hydrocarbon waxes and their derivatives by the Fischer-Tropsch process; polyolefin waxes such as polyethylene wax and polypropylene wax and their derivatives; higher aliphatic alcohols; fatty acids such as stearic acid and palmitic acid; acid amide waxes.
- waxes may be used alone or in combination.
- the weight average molecular weight of the wax is preferably 300 or more and 10,000 or less.
- the weight average molecular weight of the wax is less than 300, the permeability of the wax becomes too large, and the bleeding from the surface side of the channel wall becomes large, the channel wall is formed inside the channel, and the channel There is a risk that it will narrow itself down.
- the wax tends to remain inside the channel wall forming material, and the wax may not come out on the side of the channel wall facing the channel.
- ⁇ ei and ⁇ vi are based on the evaporation energy and molar volume of atoms and atomic groups (25°C )” as a reference.
- ⁇ ei Evaporation energy of the atom or atomic group of the i component
- ⁇ vi Molar volume of the atom or atomic group of the i component
- Image forming unit> The overall configuration of the image forming unit will be described with reference to FIGS. 2, 3, and 4.
- FIG. 2 is a cross-sectional view of a schematic configuration of an image forming unit 100 according to an embodiment of the present disclosure, and each configuration is briefly illustrated.
- FIG. 3 is a schematic cross-sectional view of a process cartridge P according to an embodiment of the present disclosure.
- FIG. 4 is a block diagram showing a schematic control mode of the main parts of the image forming unit 100 in the embodiment of the present disclosure.
- the image forming unit 100 can accommodate a process cartridge P, and by replacing the entire process cartridge, maintenance is easy and convenient.
- the process cartridge P includes a photosensitive drum 11 as an image carrier.
- a charging roller 12 , a developing device 20 , and a cleaning member 14 are provided around the photosensitive drum 11 .
- the charging roller 12 charges the surface of the photosensitive drum 11.
- the developing device 20 develops the electrostatic latent image formed on the surface of the photosensitive drum 11 using a developer (channel wall forming particles).
- the cleaning member 14 cleans the surface of the photosensitive drum 11.
- Voltages required for image formation can be applied by a charging high-voltage power source 71, a developing high-voltage power source 72, and a transfer high-voltage power source 74, and are controlled by a control unit 202 (FIG. 4). Further, the image forming unit 100 can drive the photosensitive drum 11 of the process cartridge P with a motor M1 (not shown), and can drive the developing device 20 of the process cartridge P with a motor M2 (not shown).
- the charging high voltage 71 which is a voltage application unit, applies a voltage of -946V to the charging roller 12 for image formation, so that the surface of the photosensitive drum 11 is uniformly charged to -460V. be done.
- a DC (direct current) voltage is applied to the charging roller 12, and the photosensitive drum 11 is uniformly charged with a charging potential Vd by discharge. Vd at this time is called the dark potential and is -460V.
- the surface of the photosensitive drum 11 is charged by the charging roller 12, the surface of the photosensitive drum 11 is irradiated with laser light 9 from the exposure unit 73.
- the surface potential of the photosensitive drum 11 irradiated with the laser beam 9 changes to -100V as the bright area potential Vl, and an electrostatic latent image is formed.
- the exposure unit 73 receives time-series electric digital pixel signals of image information that are input from the controller 200 to the control unit 202 via the interface 201 and subjected to image processing.
- the exposure unit 73 includes a laser output section that outputs a laser beam 9 modulated in accordance with input time-series electric digital pixel signals, a rotating polygon mirror, an f ⁇ lens, a reflecting mirror, etc.
- the surface of the photosensitive drum 11 is exposed with light 9 in the main scanning direction. By this main scanning exposure and sub-scanning by rotation of the photosensitive drum 11, an electrostatic latent image corresponding to image information is formed.
- the image forming unit 100 includes a contact/separation unit 75 that controls the position of the developing device 20, and can control the developing device 20 to different positions during image formation and when not forming an image.
- the operation of the approaching/separating means 75 is controlled by the control section 202 shown in FIG.
- the developing roller 23 which serves as a developer carrier and has been spaced apart from the photosensitive drum 11, is moved so as to come into contact with the photosensitive drum 11 by the contact/separation means 75.
- the developing roller 23 is moved in the direction of arrow C in FIG. 3, and the supply roller 24 as a developer (flow path wall forming particles) feeding member is moved in the direction of arrow D in FIG.
- Rotation is started by driving M2 (not shown).
- a voltage of -300V as a developing voltage from the developing high voltage 72 for the developing roller 23 to the developing roller 23 the electrostatic latent image formed on the photosensitive drum 11, that is, the above-mentioned Vl portion.
- developer is supplied by the developing roller 23 and the image is developed.
- the ratio of the moving speed of the surface of the photosensitive drum 11 and the moving speed of the surface of the developing roller 23 at this time is called a developing circumferential speed ratio.
- the amount of developer developed on the photosensitive drum 11 can be controlled. For example, if the developing circumferential speed ratio is 2.5, if all the developer on the developing roller 23 is used to develop the electrostatic latent image on the photosensitive drum 11, the developer per unit area of the surface of the photosensitive drum 11 The amount is 2.5 times the amount of developer per unit area of the surface of the developing roller 23.
- the developing circumferential speed ratio is controlled by the speed of the motor M2 so that the amount of developer suitable for forming the microchannel wall inside the porous substrate S1 can be developed.
- a porous base material S1 serving as a recording medium is placed on a paper feed tray 1, and is picked up one by one by a pickup roller 2.
- the developed developer image is transferred to the porous base material S1 as a recording medium due to the potential difference between the transfer roller 4 and the transfer roller 4 to which +2000V is applied by the transfer high voltage 74.
- the porous base material S1 is a porous sheet-like medium.
- the transfer roller 4 uses a semi-conductive sponge whose main component is NBR hydrin rubber, which is an elastic material, for the conductive shaft body (hereinafter also referred to as core metal) and the part that is pressed against the photosensitive drum 11. Electrical resistance is adjusted using ion conductive material.
- the outer diameter is 12.5 mm, and the core diameter is 6 mm.
- the resistance value when 2kV is applied is 1.0 to 3.0 ⁇ 10 8 ⁇ under normal temperature and humidity environment of 23°C/50% relative humidity, 0.5 ⁇ 10 8 ⁇ in a high temperature and high humidity environment of 32°C/80% relative humidity, 8.0 ⁇ 10 8 ⁇ in a low temperature and low humidity environment of 15°C/10% relative humidity Therefore, the resistance changes depending on the environment.
- the porous substrate S1 onto which the developer image has been transferred is discharged to the outside of the image forming unit with the developer image facing upward in the direction of gravity. Note that after the photosensitive drum 11 has passed the transfer roller 4, the untransferred developer is scraped off by the cleaning member 14 that is in contact with the photosensitive drum 11, and the process from charging by the charging roller 12 is repeated again, so that the photosensitive drum 11 is continuously charged. image formation.
- the channel repels the liquid such as the sample in the porous layer by the channel wall (details are described below), confines the liquid in a predetermined area surrounded by the channel wall, and prevents capillary action in the porous layer.
- the sample solution can be flowed by
- a channel pattern 80 shown in FIG. 5A was formed on the porous substrate S1 using the image forming unit 100.
- FIG. 5B shows a schematic cross-sectional view at the position of the broken line 80a in FIG. 5A.
- FIG. 5C is an enlarged view of a portion of FIG. 5B.
- particle images 81 for forming channel walls were formed to surround the reagent section 83, test liquid section 84, and channel 82, respectively.
- the reagent part 83 is for attaching a reagent
- the test liquid part 84 is for attaching a test liquid (sample liquid)
- the flow path 82 is for connecting the reagent part 83 and the test liquid part 84. It is.
- the width L1 of the channel wall forming particle image 81 at the portion sandwiching the channel 82 was 4 mm, and the width L2 of the channel 82 was 1.5 mm. Further, the diameter L3 of the reagent section 83 and the test liquid section 84 was 7 mm, and the longest part L4 of the flow path was 40 mm.
- the test liquid passes through the channel 82. It is possible to inspect whether or not the color reaction occurs by diffusing into the reagent portion 83.
- the shape and size of the flow path pattern are of course not limited to these, and may be a combination of straight lines or curved lines, or shapes using branches, and the width of the flow path may be changed in the middle of the flow path. .
- the channel wall is made of the channel wall forming material and has high hydrophobicity.
- the hydrophobicity of the side surface of the channel wall on the channel side is important, and has a large effect on the flow rate of the sample and the bleeding into the channel wall.
- highly hydrophobic wax is actively infiltrated into the porous base material S1 to form the channel wall.
- porous base material S1 one that exhibits appropriate porosity and hydrophilicity is suitable.
- the porous structure is preferably one with an open cell structure or a network (nanofiber, etc.) structure, such as filter paper, plain paper, high-quality paper, watercolor paper, Kent paper, synthetic paper, synthetic resin porous film, fabric, and textile products. , etc.
- filter paper is preferred because it has high porosity and good hydrophilicity.
- the porosity can be appropriately selected depending on the purpose, but is preferably 20% to 90%. If the porosity exceeds 90%, the strength as a base material may not be maintained, and if it is less than 20%, the permeability of the sample liquid may deteriorate.
- Hydrophilicity is a necessary property to enable biological fluids containing water, such as blood, urine, and saliva, to diffuse into the base material as sample liquids.
- Table 1 shows the basis weight, etc. of the porous base material S1 used in the examples of the present disclosure.
- the apparent density (g/cm 3 ) is (basis weight (g/m 2 )/thickness (mm) x 1000), and the porosity (%) is ((true density - apparent density)/true density x 100) It was calculated as
- a channel pattern is formed on the above-mentioned Whatman qualitative filter paper grade 1, which is the porous substrate S1, using channel wall forming particles T. At that time, the amount of the flow path wall forming particles T applied was 5.6 g/m 2 .
- the optimal conditions differ depending on the thickness of the porous base material S1 and the method and time of the heating process, so it is not limited to this value.
- the porous base material S1 on which the channel pattern 80 is printed is subjected to a heating process using a heating unit (not shown). Through the heating process, the channel wall forming material is melted, the thermoplastic resin B and wax W in the channel wall forming material are separated, and the separated wax permeates into the porous base material S1.
- a microchannel device is formed having a channel surrounded by hydrophobic walls.
- the heating temperature needs to be a temperature at which the channel wall forming material melts and the wax W separated from the thermoplastic resin B permeates into the porous base material S1.
- the channel wall forming material began to melt at 140° C. or higher, and the wax W penetrated into the porous material S1.
- the heating time is required to allow the melted and separated wax to completely permeate the porous base material S1 in the thickness direction.
- An oven can be used as the heating unit.
- the heating method is not limited to this, and a far-infrared heater, a hot plate, or the like may be used.
- the heating conditions can also be appropriately selected depending on the channel wall forming material and the physical properties of the porous substrate S1.
- FIGS. 1A to 1C are schematic cross-sectional views taken at the position of the broken line 80a in FIG. 5A as diagrams representing the channel wall forming material before and after heating.
- FIG. 1A is a sectional view before heating
- FIG. 1B is a sectional view after heating.
- FIG. 1C is an enlarged view of a part of FIG. 1B.
- the channel wall forming particles T before heating are in a state where they are merely attached to the surface of the porous base material S1.
- the flow path wall forming particles T are melted by the subsequent heating, and the wax W and the thermoplastic resin B are separated.
- the thermoplastic resin B remains on the surface of the porous base material S1, and the wax W permeates into the inside of the porous base material S1 by capillary action with the porous base material S1.
- the hydrophobic wax W penetrates into the porous base material S1 in the thickness direction, and a channel 82 sandwiched between the wax W is formed in the porous base material S1. .
- the channel wall forming particles T include a thermoplastic resin B and a wax W.
- the channel wall forming particles T are melted by the heating process as described above, the thermoplastic resin B and the wax W are separated, and the wax is allowed to penetrate into the porous base material S1.
- a channel wall is formed inside the porous base material S1.
- the storage modulus G' of the thermoplastic resin B is set to the above-mentioned value so as not to penetrate into the base material.
- Example 1 In Example 1, a microchannel device was produced using channel wall forming particles T1 containing thermoplastic resin B1 and wax W1.
- the channel wall forming particles T1 were produced as particles with a weight average particle diameter of 7 ⁇ m by a known suspension polymerization method.
- Styrene acrylic resin was used as the thermoplastic resin B1
- FNP90 was used as the wax W1.
- Particles T1 for forming channel walls were produced.
- the above material was kept warm at 65°C, and T. K. Using a homomixer (manufactured by Tokushu Kika Kogyo Co., Ltd.), the mixture was uniformly dissolved and dispersed at 500 rpm to prepare a polymerizable monomer composition.
- the polymerizable monomer composition was introduced into the aqueous dispersion medium and granulated for 15 minutes while maintaining the rotational speed of 12,000 rpm. After that, the stirrer was changed from the high-speed stirrer to a propeller stirring blade, and the internal temperature was raised and maintained at 60°C to continue the polymerization reaction for 5 hours, and then the internal temperature was raised to and maintained at 80°C. , and the polymerization reaction was continued for an additional 3 hours. After the polymerization reaction was completed, residual monomers were distilled off at 80°C under reduced pressure, and the mixture was cooled to 30°C to obtain a polymer fine particle dispersion.
- FIGS. 5A to 5C A channel pattern shown in FIGS. 5A to 5C was formed on the porous substrate S1 using the channel wall forming particles T1, and a microchannel device (sample A) was produced through a heating process.
- an oven (Yamato Kagaku Co., Ltd., constant temperature constant temperature incubator DN610H) was used.
- the heating conditions were 15 minutes in a 160°C environment.
- the cross section of the channel wall of the formed microchannel device was observed.
- the wax abundance ratio X on the surface side of the porous base material was 5%, and the wax abundance ratio Y inside the porous base material was 95%.
- channel walls within the porous substrate were formed of wax and were effectively functioning as channel walls.
- thermoplastic resin does not dissolve in hexane and only the wax dissolves in hexane, only the wax can be removed.
- FIGS. 6A and 6B The state of the device before cleaning with hexane and the state of the device after cleaning are shown in FIGS. 6A and 6B.
- Figures 6A (a-1) and 6A (a-2) show the state before wax removal with hexane.
- a coloring agent such as food coloring
- FIG. 6A (a-1) when colored water 87 mixed with a coloring agent such as food coloring is dropped into the channel 82 of the device (FIG. 6A (a-1)), if there is a channel wall formed of wax W, the colored water 87 will drop due to its hydrophobicity. No bleeding occurs toward the channel wall side (below the thermoplastic resin B) (FIG. 6A (a-2)). It was confirmed that the colored water did not ooze into the channel wall side (below the thermoplastic resin B) in the created microchannel device as well.
- FIG. 6B (b-1) and FIG. 6B (b-2) show the state after wax removal with hexane.
- Figure 6B (b-1) when colored water was dropped into the flow path ( Figure 6B (b-1)), the flow path wall formed by the wax W had been removed, so it was found that the flow path wall was formed.
- the colored water 87 also oozes in the portion (below the thermoplastic resin B) (FIG. 6B (b-2)). It was confirmed that even when wax was removed from the created microchannel device, colored water oozed out to the channel wall side (below thermoplastic resin B).
- a device in which a thermoplastic resin is present in the channel wall material has better crack resistance than a device in which the channel wall is formed only of wax.
- the formed microchannel device was wrapped around a cylindrical rod with a diameter of 10 mm to check its breakability.
- the device was wrapped so that the surface of the device was on the outside. "OK” indicates that no visible cracks occurred, and "NG” indicates that one or more visible cracks occurred.
- a microchannel device (sample B) was produced in the same manner as in Example 1, except that the channel wall forming particles T2 were used and the heating time was changed to 60 minutes.
- Example 2 Similarly to Example 1, a dropping test and a test to evaluate cracking resistance were conducted. The results are shown in Table 2.
- a microchannel device (sample C) was produced in the same manner as in Example 2 except that the channel wall forming particles T3 were used, and the sample was subjected to a dropping test and a test to evaluate cracking resistance. .
- the results are shown in Table 2.
- Example 3 In this example, a microchannel device was produced using channel wall forming particles T4 containing thermoplastic resin B2 and wax W4.
- Thermoplastic resin B2 is a polyester synthesized using the following monomers. ⁇ Bisphenol A-PO (propylene oxide) 2 mol adduct 50 parts by mass ⁇ Bisphenol A-EO (ethylene oxide) 2 mol adduct 30 parts by mass ⁇ Ethylene glycol 5 parts by mass ⁇ Terephthalic acid 40 parts by mass
- Wax W4 is FNP90 (manufactured by Nippon Seiro Co., Ltd., hydrocarbon wax, weight average molecular weight 771).
- the above materials were put into a twin-screw kneader (PCM-30 model, manufactured by Ikegai Co., Ltd.) set at a temperature of 120°C and kneaded to obtain a kneaded product.
- PCM-30 model manufactured by Ikegai Co., Ltd.
- the obtained kneaded product was cooled and coarsely ground to 1 mm or less using a hammer mill to obtain a coarsely ground product.
- the obtained coarse material was pulverized using a mechanical pulverizer (T-250, manufactured by Turbo Kogyo Co., Ltd.). Further, classification was performed using a rotary classifier (200TSP, manufactured by Hosokawa Micron Co., Ltd.) to obtain particles T4 for forming channel walls with a weight average particle diameter of 7.0 ⁇ m.
- the operating conditions of the rotary classifier (200TSP, manufactured by Hosokawa Micron Co., Ltd.) were such that classification was performed at a classification rotor rotation speed of 50.0 s -1 .
- a microchannel device (sample D) was prepared in the same manner as in Example 1, except that particles T4 for forming channel walls were used and the heating time was changed to 5 minutes, and a drop test and crack resistance were performed. We conducted an evaluation test. The results are shown in Table 2.
- a microchannel device (sample F) was produced in the same manner as in Example 1 except for using channel wall forming particles T6.
- Example 2 A drip test and a test to evaluate cracking resistance were conducted in the same manner as in Example 1, except that microchannel devices (samples E and F) were used. The results are shown in Table 2.
- Example 4 In Example 4, a microchannel device was produced using channel wall forming particles T7 containing thermoplastic resin B1 and wax W1.
- Example 1 The difference from Example 1 is that channel wall forming particles T7 were used in which the content of wax W1 was changed from 20.0 parts by mass to 15.0 parts by mass.
- Example G A microchannel device (sample G) was produced in the same manner as in Example 1, and a dropping test and a test to evaluate cracking resistance were conducted. The results are shown in Table 2.
- Example 5 In Example 5, a microchannel device was produced using channel wall forming particles T8 containing thermoplastic resin B1 and wax W5.
- Example 1 The difference from Example 1 is that FNP90 wax was changed to diotadecyl terephthalate.
- a microchannel device (sample H) was prepared in the same manner as in Example 1, and a dropping test and a test to evaluate cracking resistance were conducted. The results are shown in Table 2.
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Abstract
Description
前記流路壁を形成する流路壁形成材料は、熱可塑性樹脂およびワックスを含有しており、
前記流路壁における前記多孔質基材の表面側のワックスの存在比率をXとし、前記多孔質基材の内部のワックスの存在比率をYとしたとき、
X<Y
であり、
前記流路壁形成材料の全体において、前記ワックスの含有比率が13.1質量%以上70.0質量%以下であり、
前記ワックスのSP値をSP(W)[cal/cm3]1/2とし、前記熱可塑性樹脂のSP値をSP(B)[cal/cm3]1/2としたとき、
SP(B)-SP(W)≧0.6
であることを特徴とするマイクロ流路デバイスが提供される。
前記多孔質基材の表面に、電子写真方式で、熱可塑性樹脂およびワックスを含有する流路壁形成材料を載せて、前記多孔質基材の表面に流路パターンを形成する工程、および
前記流路パターンに含有される前記ワックスを熱により溶融させて、前記ワックスを前記多孔質基材の内部に浸透させて、前記多孔質基材の内部に流路壁を形成する工程、
を有し、
前記流路壁形成材料の全体において、前記ワックスの含有比率が13.1質量%以上70.0質量%以下であり、
前記ワックスのSP値をSP(W)[cal/cm3]1/2とし、前記熱可塑性樹脂のSP値をSP(B)[cal/cm3]1/2としたとき、
SP(B)-SP(W)≧0.6
であることを特徴とするマイクロ流路デバイスの製造方法が提供される。
X<Y
であることを意味する。
流路壁形成材料は、熱可塑性樹脂とワックス(油脂)とを含有している。
SP(B)-SP(W)≧0.6
SP(B)-SP(W)≧1.0
熱可塑性樹脂は、特に限定されることはなく、以下に挙げる公知の熱可塑性樹脂を用いることができる。ポリエステル樹脂、ビニル系樹脂、アクリル系樹脂、スチレンアクリル系樹脂、ポリエチレン、ポリプロピレン、ポリオレフィン、エチレン-酢酸ビニル共重合樹脂、エチレン-アクリル酸共重合樹脂など。
G’ > 14Pa (実施例1では160℃)
であることが好ましい。
本開示のワックスとして用いられる材料としては、特に限定されるものではなく、下記のようなトナーに用いられる公知のワックスを用いることができる。
溶解度パラメータ(SP値)は、Fedorsの式(1)を用いて求める。
δi=(Ev/V)1/2=(Δei/Δvi)1/2 式(1)
Ev:蒸発エネルギー
V:モル体積
Δei:i成分の原子又は原子団の蒸発エネルギー
Δvi:i成分の原子又は原子団のモル体積
図2、図3および図4を参照して、画像形成ユニット全体の構成について説明する。
画像形成ユニット100は、現像装置20の位置を制御する接離手段75を有しており、画像形成時と非画像形成時とで現像装置20の位置を異なる位置に制御することができる。接離手段75は、図4に示した制御部202によって動作を制御される。
23℃/相対湿度50%の常温常湿環境下で1.0~3.0×108Ω、
32℃/相対湿度80%の高温高湿環境下で0.5×108Ω、
15℃/相対湿度10%の低温低湿環境下で8.0×108Ω
となり、環境による抵抗変化がある。
流路は、流路壁(詳細は以下に記載する。)によって多孔質層内の検体などの液体をはじき、液体を流路壁によって囲まれた所定の領域に閉じ込め、多孔質層の毛細管現象によって試料液を流すことができる。
流路壁は、前記流路壁形成材料から構成されており、高い疎水性を有している。特に、流路として機能させるには、流路壁の流路側の側面部の疎水性が重要であり、検体の流速や、流路壁への滲みに大きな影響がある。
多孔質基材S1としては、適度な空隙率と親水性を示すものが好適である。多孔質構造としては、連泡並びに網目(ナノファイバー等)状の構造等のものが良く、濾紙、普通紙、上質紙、水彩紙、ケント紙、合成紙、合成樹脂多孔質フィルム、布地、繊維製品、などが挙げられる。これらの中でも、高い空隙率と良好な親水性を有する点から、濾紙が好ましい。
多孔質基材S1である前述のWhatman 定性濾紙 グレード1の上に、流路壁形成用粒子Tを用いて流路パターンを形成する。そのときの流路壁形成用粒子Tの載り量は5.6g/m2とした。
流路パターン80が印刷された多孔質基材S1は、加熱ユニット(不図示)による加熱プロセスを経る。加熱プロセスを経ることによって流路壁形成材料が溶融し、流路壁形成材料中の熱可塑性樹脂BとワックスWとが分離し、分離したワックスが多孔質基材S1へと浸透することによって、疎水性の壁に囲まれた流路を有するマイクロ流路デバイスが形成される。
流路壁形成用粒子Tには、熱可塑性樹脂BとワックスWとが含まれている。本開示の実施例の場合、上記のように加熱プロセスにより流路壁形成用粒子Tを溶融し、熱可塑性樹脂BとワックスWとを分離して、ワックスを多孔質基材S1へ浸透させることによって、多孔質基材S1の内部に流路壁を形成する。流路壁は疎水性の観点からワックスWのみを多孔質基材S1の内部に浸透させることが好ましく、またデバイスの表面の保護の観点から、熱可塑性樹脂Bが多孔質基材S1の表面に残っていることが好ましい。そのため、熱可塑性樹脂Bの貯蔵弾性率G’は基材への浸透がないように前述するような値にしておくことが好ましい。
実施例1においては、熱可塑性樹脂B1と、ワックスW1とを含む流路壁形成用粒子T1を用いて、マイクロ流路デバイスを作製した。
[重合性単量体組成物調製工程]
下記組成を混合後、ボールミルで3時間分散させた。
スチレン 70.0質量部
n-ブチルアクリレート 30.0質量部
ジビニルベンゼン 0.3質量部
ポリエステル樹脂 5.0質量部
(プロピレンオキサイド変性ビスフェノールAとイソフタル酸との重縮合物(ガラス転移点65℃、重量平均分子量(Mw)10000、数平均分子量(Mn)6000))
FNP90ワックス(日本精蝋(株)、炭化水素ワックス、重量平均分子量771) 20.0質量部
高速撹拌装置T.K.ホモミクサー(プライミクス(株)製)を取り付けた2L用四つ口フラスコ中にイオン交換水710部と0.1mol/L-リン酸ナトリウム水溶液450部を添加し、回転数12000rpmで撹拌しながら、60℃に加熱した。ここに1.0mol/L-塩化カルシウム水溶液68.0部を添加し、微小な難水溶性分散安定剤としてリン酸カルシウムを含む水系分散媒体を調製した。
上記水系分散媒体中に前記重合性単量体組成物を投入し、回転数12000rpmを維持しつつ15分間造粒した。その後、高速撹拌機からプロペラ撹拌羽根に撹拌機を交換し、内温を60℃に昇温し維持して重合反応を5時間継続させた後、内温を80℃に昇温し維持して、さらに3時間重合反応を継続させた。重合反応終了後、80℃、減圧下で残存単量体を留去した後、30℃まで冷却し、重合体微粒子分散液を得た。
上記重合体微粒子分散液を洗浄容器に移し、撹拌しながら、希塩酸を添加し、pH1.5に調整した。分散液を2時間撹拌後、ろ過器で固液分離し、重合体微粒子を得た。これをイオン交換水1200部中に投入して撹拌し、再び分散液とした後、ろ過器で固液分離した。この操作を3回行い流路壁形成用粒子T1の母粒子を得た。
さらに、得られた母粒子100.0部に対し、ヘキサメチルジシラザンで表面処理された流動性向上剤(一次粒子の個数平均粒径7nmのシリカ)1.0部を加えて、ヘンシェルミキサーで5分間乾式混合した。そして、重量平均粒径(D4)が6.8μmの流路壁形成用粒子T1を得た。
流路壁形成用粒子T1を用いて、多孔質基材S1に図5A~図5Cに示す流路パターンを形成し、加熱プロセスを経て、マイクロ流路デバイス(サンプルA)を作製した。
検査液部84に以下の検体を滴下して流路壁への検体の滲みが発生しないか試験した。
検体:下記組成を混合して作製した食紅水を検体として使用した。
純水(オルガノ製純水装置RO-HP150にて作成):40mL
共立食品株式会社 食用色素 赤:0.08g
流路壁がワックスのみで形成されているデバイスより、流路壁材料内に熱可塑性樹脂が存在するデバイスの方がデバイスの耐割れ性が向上する。
ワックスをエチレングリコールジベヘネート(重量平均分子量707)に変えたこと以外は流路壁形成用粒子T1と同様にして、ΔSP値(=SP(B)-SP(W))が0.99である流路壁形成用粒子T2を形成した。
ワックスをテレフタル酸ジテトラデカン(重量平均分子量587)に変えたこと以外は流路壁形成用粒子T1と同様にして、ΔSP値(=SP(B)-SP(W))が0.58である流路壁形成用粒子T3を形成した。
本実施例では、熱可塑性樹脂B2と、ワックスW4とを含む流路壁形成用粒子T4を用いて、マイクロ流路デバイスを作製した。
・ビスフェノールA-PO(プロピレンオキシド)2モル付加物 50質量部
・ビスフェノールA-EO(エチレンオキシド)2モル付加物 30質量部
・エチレングリコール 5質量部
・テレフタル酸 40質量部
・熱可塑性樹脂B2 52質量部
・ワックスW4 48質量部
流路壁形成用粒子T5として、上記ワックスW4のみを含有する粒子を用意した。流路壁形成用粒子T5を用いる以外は、実施例1と同様にして、マイクロ流路デバイス(サンプルE)を作製した。
実施例4においては、熱可塑性樹脂B1と、ワックスW1とを含む流路壁形成用粒子T7を用いて、マイクロ流路デバイスを作製した。
実施例5においては、熱可塑性樹脂B1と、ワックスW5とを含む流路壁形成用粒子T8を用いて、マイクロ流路デバイスを作製した。
5 中間転写体
6 1次転写ローラ
7 2次転写ローラ
P プロセスカートリッジ
11 感光ドラム
12 帯電ローラ
14 クリーニングブレード
15 メモリ
20 現像装置
21 現像容器
23 現像ローラ
24 樹脂粒子供給ローラ
25 現像ブレード
71 帯電高圧
72 現像高圧
73 露光ユニット
74 転写高圧
75 接離手段
80 流路パターン
81 保護層
82 流路
83 試薬部
84 検査液部
100 画像形成ユニット
T 流路壁形成用粒子
B 熱可塑性樹脂
W ワックス
Claims (4)
- 多孔質基材の内部に、流路壁で挟まれた流路が形成されたマイクロ流路デバイスであって、
前記流路壁を形成する流路壁形成材料は、熱可塑性樹脂およびワックスを含有しており、
前記流路壁における前記多孔質基材の表面側のワックスの存在比率をXとし、前記多孔質基材の内部の孔中に存在するワックスの存在比率をYとしたとき、
X<Y
であり、
前記流路壁形成材料の全体において、前記ワックスの含有比率が13.1質量%以上70.0質量%以下であり、
前記ワックスのSP値をSP(W)[cal/cm3]1/2とし、前記熱可塑性樹脂のSP値をSP(B)[cal/cm3]1/2としたとき、
SP(B)-SP(W)≧0.6
であることを特徴とするマイクロ流路デバイス。 - 前記SP(W)及び前記SP(B)が下記式を満たす
SP(B)-SP(W)≧1.0
請求項1に記載のマイクロ流路デバイス。 - 前記ワックスの重量平均分子量が300以上10,000以下である請求項1又は2に記載のマイクロ流路デバイス。
- 多孔質基材の内部に、流路壁で挟まれた流路が形成されたマイクロ流路デバイスの製造方法であって、
前記多孔質基材の表面に、電子写真方式で、熱可塑性樹脂およびワックスを含有する流路壁形成材料を載せて、前記多孔質基材の表面に流路パターンを形成する工程、および
前記流路パターンに含有される前記ワックスを熱により溶融させて、前記ワックスを前記多孔質基材の内部に浸透させて、前記多孔質基材の内部に流路壁を形成する工程、
を有し、
前記流路壁形成材料の全体において、前記ワックスの含有比率が13.1質量%以上70.0質量%以下であり、
前記ワックスのSP値をSP(W)[cal/cm3]1/2とし、前記熱可塑性樹脂のSP値をSP(B)[cal/cm3]1/2としたとき、
SP(B)-SP(W)≧0.6
であることを特徴とするマイクロ流路デバイスの製造方法。
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| Application Number | Priority Date | Filing Date | Title |
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| EP23791736.4A EP4516722A4 (en) | 2022-04-23 | 2023-04-10 | MICROCHANNEL DEVICE AND ASSOCIATED PRODUCTION PROCESS |
| CN202380034398.8A CN119032063A (zh) | 2022-04-23 | 2023-04-10 | 微流路装置及其制造方法 |
| US18/921,428 US20250041848A1 (en) | 2022-04-23 | 2024-10-21 | Micro flow passage device and method for manufacturing the same |
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| JP2023-040811 | 2023-03-15 | ||
| JP2023040811A JP2023160736A (ja) | 2022-04-23 | 2023-03-15 | マイクロ流路デバイス及びその製造方法 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012037511A (ja) | 2010-08-05 | 2012-02-23 | Xerox Corp | バイオメディカル用途のための非極性固体インク |
| JP2017045042A (ja) * | 2015-08-28 | 2017-03-02 | キヤノン株式会社 | トナーおよびトナーの製造方法 |
| WO2018043237A1 (ja) * | 2016-09-05 | 2018-03-08 | 東レ株式会社 | 色変換組成物、色変換シート、それを含む発光体、照明装置、バックライトユニットおよびディスプレイ |
| JP2021037612A (ja) * | 2019-08-29 | 2021-03-11 | キヤノン株式会社 | マイクロ流路デバイスの製造方法 |
| JP2021039095A (ja) * | 2019-08-29 | 2021-03-11 | キヤノン株式会社 | マイクロ流路デバイス |
| JP2022071208A (ja) | 2020-10-13 | 2022-05-13 | パイオニア株式会社 | パルスオキシメータ |
| JP2023040811A (ja) | 2021-09-10 | 2023-03-23 | サンデン株式会社 | スクロール型流体機械 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4718738B2 (ja) * | 2001-09-21 | 2011-07-06 | 株式会社リコー | 静電荷像現像用トナー |
| JP3946518B2 (ja) * | 2001-12-28 | 2007-07-18 | 株式会社リコー | 画像形成用カラートナー、画像形成装置及びトナー容器 |
| JP2015131257A (ja) * | 2014-01-10 | 2015-07-23 | 株式会社リコー | 流体デバイス及びその製造方法、並びに流体デバイス製造用熱転写媒体 |
| JP6798203B2 (ja) * | 2016-09-08 | 2020-12-09 | 株式会社リコー | 電子写真用トナー、電子写真用現像剤、画像形成装置、及びプロセスカートリッジ |
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2023
- 2023-04-10 WO PCT/JP2023/014591 patent/WO2023204087A1/ja not_active Ceased
- 2023-04-10 EP EP23791736.4A patent/EP4516722A4/en active Pending
- 2023-04-10 CN CN202380034398.8A patent/CN119032063A/zh active Pending
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012037511A (ja) | 2010-08-05 | 2012-02-23 | Xerox Corp | バイオメディカル用途のための非極性固体インク |
| JP2017045042A (ja) * | 2015-08-28 | 2017-03-02 | キヤノン株式会社 | トナーおよびトナーの製造方法 |
| WO2018043237A1 (ja) * | 2016-09-05 | 2018-03-08 | 東レ株式会社 | 色変換組成物、色変換シート、それを含む発光体、照明装置、バックライトユニットおよびディスプレイ |
| JP2021037612A (ja) * | 2019-08-29 | 2021-03-11 | キヤノン株式会社 | マイクロ流路デバイスの製造方法 |
| JP2021039095A (ja) * | 2019-08-29 | 2021-03-11 | キヤノン株式会社 | マイクロ流路デバイス |
| JP2022071208A (ja) | 2020-10-13 | 2022-05-13 | パイオニア株式会社 | パルスオキシメータ |
| JP2023040811A (ja) | 2021-09-10 | 2023-03-23 | サンデン株式会社 | スクロール型流体機械 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4516722A4 |
Also Published As
| Publication number | Publication date |
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| CN119032063A (zh) | 2024-11-26 |
| EP4516722A4 (en) | 2026-04-08 |
| EP4516722A1 (en) | 2025-03-05 |
| US20250041848A1 (en) | 2025-02-06 |
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