KR20230087690A - Manufacturing method of developing roller inclouding coating layer - Google Patents

Manufacturing method of developing roller inclouding coating layer Download PDF

Info

Publication number
KR20230087690A
KR20230087690A KR1020210176064A KR20210176064A KR20230087690A KR 20230087690 A KR20230087690 A KR 20230087690A KR 1020210176064 A KR1020210176064 A KR 1020210176064A KR 20210176064 A KR20210176064 A KR 20210176064A KR 20230087690 A KR20230087690 A KR 20230087690A
Authority
KR
South Korea
Prior art keywords
elastic layer
outer circumferential
shaft
circumferential surface
developing roller
Prior art date
Application number
KR1020210176064A
Other languages
Korean (ko)
Inventor
조정환
Original Assignee
조정환
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 조정환 filed Critical 조정환
Priority to KR1020210176064A priority Critical patent/KR20230087690A/en
Publication of KR20230087690A publication Critical patent/KR20230087690A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/26—Moulds or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/36—Removing moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/38—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0808—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer supplying means, e.g. structure of developer supply roller
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C2059/027—Grinding; Polishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

본 발명의 일실시예에 따른 샤프트, 상기 샤프트의 외주면에 형성되는 탄성층, 상기 탄성층의 외주면에 형성되는 코팅층으로 구성되는 현상롤러의 제조방법은, 상기 샤프트의 외주면에 접착제를 도포하고, 상기 접착제가 도포된 샤프트를 실린더 형상 금형의 중공부에 위치시키는 단계; 상기 실린더 형상 금형과 상기 샤프트 사이의 공간에 액상 실리콘고무 컴파운드를 주형하고, 상기 주형된 액상 실리콘고무 컴파운드를 170~200℃의 온도로 15~30분간 가열하여 실리콘고무 컴파운드를 가류한 후 상기 실린더 형상 금형에서 탈형하는 단계; 상기 탈형된 실리콘고무 컴파운드를 200℃의 온도로 2~4시간 동안 가열한 후, 선정된 직경과 거칠기로 연마하여 상기 샤프트 외주면에 상기 탄성층을 형성하는 단계; 및 상기 탄성층을 액상 우레탄 코팅액에 담그거나 상기 탄성층의 외주면에 액상 우레탄 코팅액을 분사하여 상기 탄성층의 외주면에 선정된 두께의 코팅층을 형성하는 단계를 포함한다.A method for manufacturing a developing roller comprising a shaft, an elastic layer formed on the outer circumferential surface of the shaft, and a coating layer formed on the outer circumferential surface of the elastic layer according to an embodiment of the present invention includes applying an adhesive to the outer circumferential surface of the shaft, positioning the shaft to which the adhesive is applied in the hollow of a cylindrical mold; A liquid silicone rubber compound is molded in the space between the cylindrical mold and the shaft, and the molded liquid silicone rubber compound is heated at a temperature of 170 to 200 ° C. for 15 to 30 minutes to vulcanize the silicone rubber compound, and then the cylinder shape demolding from the mold; forming the elastic layer on the outer circumferential surface of the shaft by heating the demolded silicone rubber compound at a temperature of 200° C. for 2 to 4 hours and polishing the compound to a predetermined diameter and roughness; and forming a coating layer having a predetermined thickness on the outer circumferential surface of the elastic layer by immersing the elastic layer in a liquid urethane coating liquid or spraying the liquid urethane coating liquid on an outer circumferential surface of the elastic layer.

Description

코팅층이 형성되는 현상롤러의 제조방법{MANUFACTURING METHOD OF DEVELOPING ROLLER INCLOUDING COATING LAYER}Method for manufacturing a developing roller in which a coating layer is formed {MANUFACTURING METHOD OF DEVELOPING ROLLER INCLOUDING COATING LAYER}

본 발명은 코팅층이 형성되는 현상롤러의 제조방법에 관한 것으로 더욱 상세하게는 도전성 샤프트의 외주면에 탄성층을 형성한 후 탄성층의 외주면에 액상 우레탄 코팅액을 통해 코팅층을 형성하여 품질의 수명을 극대화하는 현상롤러의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a developing roller in which a coating layer is formed, and more particularly, after forming an elastic layer on the outer circumferential surface of a conductive shaft, a coating layer is formed on the outer circumferential surface of the elastic layer through a liquid urethane coating liquid to maximize the lifespan of quality. It relates to a method for manufacturing a developing roller.

화상형성장치는 노광유닛에 의해 디지털 화상신호를 받아 정전잠상을 형성하는 감광드럼, 감광드럼의 정전잠상을 토너로 현상하는 현상장치, 상기 감광드럼에 형성된 토너에 의한 가시화상을 기록용지상으로 옮기는 전사장치 등으로 구성된다. 현상장치는 현상롤러, 현상롤러에 토너를 공급하는 토너공급롤러, 현상롤러로 이동된 토너를 일정한 두께로 규제하여 토너의 얇은 층을 형성하는 규제블레이드 등으로 구성된다. 현상롤러는 토너를 감광드럼상의 정전잠상으로 이동시켜 가시화상으로 형성시키는 중요한 역할을 하는 것으로, 감광드럼에 토너를 적정량으로 원활히 도포시키기 위해서 일정한 특성을 갖도록 형성되어야 한다.The image forming device includes a photosensitive drum that receives a digital image signal from an exposure unit to form an electrostatic latent image, a developing device that develops the electrostatic latent image of the photosensitive drum with toner, and transfers a visible image by the toner formed on the photosensitive drum onto recording paper. It consists of a transfer device and the like. The developing device is composed of a developing roller, a toner supply roller for supplying toner to the developing roller, a regulating blade for forming a thin layer of toner by regulating the toner transferred to the developing roller to a certain thickness, and the like. The developing roller plays an important role in moving the toner to the electrostatic latent image on the photosensitive drum to form a visible image, and must have certain characteristics to smoothly apply the toner in an appropriate amount to the photosensitive drum.

근래에 고화질화나 에너지 절감화 등의 요구에 따라서 입도가 작고 저융점화된 구상의 중합 토너가 종래의 분쇄 토너를 대신하여 채용되고 있다. 이러한 중합 토너에 있어서는 저융점화되어 있기 때문에 스트레스(stress)에 의해 구형 토너 입자가 깨지거나 연화 변형되기도 하여, 화상 불량이 발생하기 쉬워지기 때문에 토너가 열화되지 않도록 저경도의 현상 롤러가 요구되고 있다.In recent years, spherical polymeric toners having small particle size and low melting point have been adopted in place of conventional pulverized toners in accordance with demands for high image quality and energy saving. Since these polymerized toners have a low melting point, spherical toner particles are cracked or softened and deformed by stress, and image defects tend to occur. Therefore, a developing roller with low hardness is required to prevent the toner from deteriorating. .

탄성층의 형성재료로서는 저경도이며, 압축 영구변형에 우수하고 성형성이 우수한 액상 실리콘 고무에 카본 블랙 등을 배합한 것이 사용되고 있다. 그러나 실리콘 고무 롤러는 내마모성이 나쁘고 저분자량 수지나 미반응 물질의 이동(migration)에 의해 감광체가 오염될 염려가 있다.As a material for forming the elastic layer, a mixture of carbon black or the like with liquid silicone rubber having low hardness, excellent compression set, and excellent formability is used. However, silicone rubber rollers have poor abrasion resistance and may contaminate photoconductors due to migration of low molecular weight resins or unreacted materials.

고무 계열의 탄성체로 형성된 일반적인 현상롤러는 사용시간에 비례하여 그 표면이 마모되는 것을 피할 수 없다. 특히 고속 인쇄기기에서는 현상롤러의 표면 마모가 증가하게 되며, 인쇄 매수가 증가함에 따라 이런 표면 마모는 더욱 커지게 된다. 현상롤러의 마모가 커지게 되면, 현상롤러의 조도가 증가하게 되고, 화상의 농도가 상승하게 되며, 그레이(gray) 화상이 거칠어질 뿐만 아니라 블랙 패턴(black pattern)에서 일정한 농도의 화상을 얻을 수 없다. 이에 따라 토너의 표면에 붙어 있는 외첨제가 떨어져 나가게 되며, 이러한 이유 등으로 토너의 원하는 전기전하력이나 정착성, 유동성 등이 상실된다. 이러한 토너의 경시변화와 상기한 바와 같은 현상롤러의 경시변화로 말미암아 토너가 남아 있더라도 화상의 품질이 급격히 떨어지는 문제가 있다.A general developing roller formed of a rubber-based elastic body cannot avoid its surface being worn in proportion to the use time. In particular, in a high-speed printing machine, surface abrasion of the developing roller increases, and as the number of prints increases, such surface abrasion increases. When the wear of the developing roller increases, the roughness of the developing roller increases, the density of the image increases, and not only does a gray image become rough, but also an image of a certain density in a black pattern can be obtained. does not exist. As a result, the external additive adhering to the surface of the toner comes off, and for this reason, the desired electric charge, fixability, fluidity, etc. of the toner are lost. Due to the change of the toner and the above-mentioned change of the developing roller with the passage of time, even if the toner remains, the quality of the image is rapidly degraded.

이에 감광드럼의 오염을 방지하고 접촉자국에 의해 가로무늬가 발생하지 않으며, 표면 마찰계수가 증가하지 않도록 하여 초기 품질을 오랫동안 유지시킬 수 있는 현상롤러의 개발이 요구되고 있다.Accordingly, there is a need to develop a developing roller capable of maintaining initial quality for a long time by preventing contamination of the photosensitive drum, preventing horizontal patterns from being generated by contact marks, and preventing an increase in surface friction coefficient.

한국등록특허 제10-0862064호, 2008.10.9.공고Korean Patent Registration No. 10-0862064, 2008.10.9. Notice

본 발명은 상기와 같은 종래 기술을 개선하기 위해 안출된 것으로서, 감광드럼의 오염을 방지하고 접촉자국에 의해 가로무늬가 발생하지 않으며, 표면 마찰계수가 증가하지 않도록 하여 초기 품질을 오랫동안 유지시킬 수 있는 현상롤러의 제조방법을 제공하는 것을 목적으로 한다.The present invention has been made to improve the prior art as described above, and prevents contamination of the photosensitive drum, prevents horizontal patterns from being generated due to contact marks, and prevents the surface friction coefficient from increasing, thereby maintaining initial quality for a long time. It is an object of the present invention to provide a method for manufacturing a developing roller.

상기의 목적을 이루고 종래기술의 문제점을 해결하기 위하여, 본 발명의 일실시예에 따른 샤프트, 상기 샤프트의 외주면에 형성되는 탄성층, 상기 탄성층의 외주면에 형성되는 코팅층으로 구성되는 현상롤러의 제조방법은, 상기 샤프트의 외주면에 접착제를 도포하고, 상기 접착제가 도포된 샤프트를 실린더 형상 금형의 중공부에 위치시키는 단계; 상기 실린더 형상 금형과 상기 샤프트 사이의 공간에 액상 실리콘고무 컴파운드를 주형하고, 상기 주형된 액상 실리콘고무 컴파운드를 170~200℃의 온도로 15~30분간 가열하여 실리콘고무 컴파운드를 가류한 후 상기 실린더 형상 금형에서 탈형하는 단계; 상기 탈형된 실리콘고무 컴파운드를 200℃의 온도로 2~4시간 동안 가열한 후, 선정된 직경과 거칠기로 연마하여 상기 샤프트 외주면에 상기 탄성층을 형성하는 단계; 및 상기 탄성층을 액상 우레탄 코팅액에 담그거나 상기 탄성층의 외주면에 액상 우레탄 코팅액을 분사하여 상기 탄성층의 외주면에 선정된 두께의 코팅층을 형성하는 단계를 포함한다.In order to achieve the above object and solve the problems of the prior art, manufacture of a developing roller composed of a shaft, an elastic layer formed on the outer circumferential surface of the shaft, and a coating layer formed on the outer circumferential surface of the elastic layer according to an embodiment of the present invention. The method includes applying an adhesive to an outer circumferential surface of the shaft and positioning the shaft to which the adhesive is applied in a hollow part of a cylindrical mold; A liquid silicone rubber compound is molded in the space between the cylindrical mold and the shaft, and the molded liquid silicone rubber compound is heated at a temperature of 170 to 200 ° C. for 15 to 30 minutes to vulcanize the silicone rubber compound, and then the cylinder shape demolding from the mold; forming the elastic layer on the outer circumferential surface of the shaft by heating the demolded silicone rubber compound at a temperature of 200° C. for 2 to 4 hours and polishing the compound to a predetermined diameter and roughness; and forming a coating layer having a predetermined thickness on the outer circumferential surface of the elastic layer by immersing the elastic layer in a liquid urethane coating liquid or spraying the liquid urethane coating liquid on an outer circumferential surface of the elastic layer.

또한, 본 발명의 일실시예에 따른 현상롤러 제조방법은, 상기 코팅층을 90~200℃에서 30~120분 동안 가류하는 단계; 및 상기 코팅층에 15~55초 동안 자외선을 조사하는 단계를 더 포함한다.In addition, the developing roller manufacturing method according to an embodiment of the present invention includes curing the coating layer at 90 to 200° C. for 30 to 120 minutes; and irradiating the coating layer with ultraviolet rays for 15 to 55 seconds.

또한, 본 발명의 일실시예에 따른 현상롤러 제조방법은, 상기 코팅층의 표면에 파장 180nm 내지 300nm 범위의 UV lamp 또는 파장 172nm의 Excimer lamp 등의 고에너지 자외선을 조사하여 상기 탄성층과 상기 코팅층 사이에 고분자화합물을 형성하는 단계를 더 포함한다.In addition, in the method of manufacturing the developing roller according to an embodiment of the present invention, the surface of the coating layer is irradiated with high-energy ultraviolet rays such as a UV lamp in a wavelength range of 180 nm to 300 nm or an Excimer lamp with a wavelength of 172 nm to form a gap between the elastic layer and the coating layer. It further comprises the step of forming a polymer compound.

본 발명의 현상롤러 제조방법에 따르면, 감광드럼의 오염을 방지하고 접촉자국에 의해 가로무늬가 발생하지 않으며, 표면 마찰계수가 증가하지 않도록 하여 초기 품질을 오랫동안 유지시킬 수 있는 현상롤러를 제조하는 효과를 얻을 수 있다.According to the developing roller manufacturing method of the present invention, the effect of manufacturing a developing roller capable of maintaining initial quality for a long time by preventing contamination of the photosensitive drum, preventing horizontal patterns from being generated due to contact marks, and preventing an increase in surface friction coefficient. can be obtained.

또한, 본 발명의 현상롤러 제조방법에 따르면, 탄성층과 코팅층 사이에 고분자화합물이 형성되어 탄성층과 코팅층을 일체화함으로써 품질수명과 내구성을 극대화하는 효과를 얻을 수 있다.In addition, according to the method for manufacturing the developing roller of the present invention, a polymer compound is formed between the elastic layer and the coating layer, thereby integrating the elastic layer and the coating layer, thereby obtaining an effect of maximizing quality life and durability.

도 1은 본 발명에 따른 현상롤러를 포함하는 현상장치의 구성을 도시한 도면이다.
도 2는 본 발명의 일실시예에 따른 현상롤러 제조방법의 흐름을 도시한 순서도이다.1 is a diagram showing the configuration of a developing apparatus including a developing roller according to the present invention.
2 is a flow chart showing the flow of a method for manufacturing a developing roller according to an embodiment of the present invention.

본 발명의 과제 해결 수단의 특징 및 이점을 보다 명확히 하기 위하여, 첨부된 도면에 도시된 본 발명의 특정 실시 예를 참조하여 본 발명을 더 상세하게 설명한다. 다만, 하기의 설명 및 첨부된 도면에서 본 발명의 요지를 흐릴 수 있는 공지기능 또는 구성에 대한 상세한 설명은 생략한다. 또한, 도면 전체에 걸쳐 동일한 구성 요소들은 가능한 한 동일한 도면 부호로 나타내고 있음에 유의하여야 한다.In order to clarify the characteristics and advantages of the problem solving means of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the accompanying drawings. However, detailed descriptions of well-known functions or configurations that may obscure the gist of the present invention will be omitted in the following description and accompanying drawings. In addition, it should be noted that the same components are indicated by the same reference numerals throughout the drawings as much as possible.

이하의 설명 및 도면에서 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위한 용어의 개념으로 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야 한다. 따라서 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일실시예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.The terms or words used in the following description and drawings should not be construed as being limited to a common or dictionary meaning, and the inventor may appropriately define the concept of terms for explaining his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, so various alternatives can be made at the time of this application It should be understood that there may be equivalents and variations.

또한, 제1, 제2 등과 같이 서수를 포함하는 용어는 다양한 구성요소들을 설명하기 위해 사용하는 것으로, 하나의 구성요소를 다른 구성요소로부터 구별하는 목적으로만 사용될 뿐, 상기 구성요소들을 한정하기 위해 사용되지 않는다. 예를 들어, 본 발명의 권리 범위를 벗어나지 않으면서 제2 구성요소는 제1 구성요소로 명명될 수 있고, 유사하게 제1 구성요소도 제2 구성요소로 명명될 수 있다. 더하여, 어떤 구성요소가 다른 구성요소에 "연결되어" 있다거나 "접속되어" 있다고 언급할 경우, 이는 논리적 또는 물리적으로 연결되거나, 접속될 수 있음을 의미한다.In addition, terms including ordinal numbers, such as first and second, are used to describe various components, and are used only for the purpose of distinguishing one component from other components, and to limit the components. Not used. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention. Additionally, when an element is referred to as being “connected” or “connected” to another element, it means that it is logically or physically connected or capable of being connected.

다시 말해, 구성요소가 다른 구성요소에 직접적으로 연결되거나 접속되어 있을 수 있지만, 중간에 다른 구성요소가 존재할 수도 있으며, 간접적으로 연결되거나 접속될 수도 있다고 이해되어야 할 것이다. 또한, 본 명세서에서 기술되는 "포함한다" 또는 "가지다" 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.In other words, it should be understood that a component may be directly connected or connected to another component, but another component may exist in the middle, or may be indirectly connected or connected. In addition, terms such as "include" or "having" described in this specification are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or the It should be understood that the above does not preclude the possibility of the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

또한, 명세서에 기재된 "…부", "…기", "모듈" 등의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다. 또한, "일(a 또는 an)", "하나(one)", "그(the)" 및 유사어는 본 발명을 기술하는 문맥에 있어서(특히, 이하의 청구항의 문맥에서) 본 명세서에 달리 지시되거나 문맥에 의해 분명하게 반박되지 않는 한, 단수 및 복수 모두를 포함하는 의미로 사용될 수 있다.In addition, terms such as “… unit”, “… unit”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. there is. Also, "a or an", "one", "the" and similar words in the context of describing the invention (particularly in the context of the claims below) indicate otherwise in this specification. may be used in the sense of including both the singular and the plural, unless otherwise clearly contradicted by the context.

본 발명의 실시형태를 설명함에 있어서 당업자라면 자명하게 이해할 수 있는 공지의 구성에 대한 설명은 본 발명의 요지를 흐리지 않도록 생략될 것이다. 또한 도면을 참조할 때에는 도면에 도시된 선들의 두께나 구성요소의 크기 등이 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있음을 고려하여야 한다.In describing the embodiments of the present invention, descriptions of known configurations that can be readily understood by those skilled in the art will be omitted so as not to obscure the gist of the present invention. In addition, when referring to the drawings, it should be considered that the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description.

이하에서는 첨부된 도면을 참조하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 현상롤러를 포함하는 현상장치의 구성을 도시한 도면이다.1 is a diagram showing the configuration of a developing apparatus including a developing roller according to the present invention.

본 발명에 따른 현상롤러를 포함하는 현상장치는 감광체드럼(110), 토너공급롤러(120), 토너규제블레이드(130), 토너(140), 현상롤러(150)를 포함한다. 현상롤러(150)는 감광체드럼(110)에 대향해서 가압 접촉하고, 반대측에는 현상롤러(150)과 토너공급롤러(120)이 접촉된다. 현상롤러(150)와 감광체드럼(110)가 접촉되는 영역의 상측에는 토너박층을 규제하는 토너규제블레이드(130)이 접촉되어 있으며, 현상롤러(150)은 감광체드럼(110)보다 빠른 외주 속도로 회전 구동한다. 이때 현상롤러(150)와 감광체드럼(110) 또는 토너규제블레이드(130)가 가압 접촉하고 있으므로 이들 접촉부위가 고온·고습 상태로 방치되면 압접자국이 생기거나 감광드럼(110)을 오염시키기도 한다.A developing device including a developing roller according to the present invention includes a photosensitive drum 110, a toner supply roller 120, a toner regulating blade 130, a toner 140, and a developing roller 150. The developing roller 150 is in pressure contact with the photoreceptor drum 110, and the developing roller 150 and the toner supply roller 120 are in contact with each other on the opposite side. A toner regulating blade 130 for regulating the thin toner layer is in contact with the upper side of the contact area between the developing roller 150 and the photosensitive drum 110, and the developing roller 150 moves at a faster outer circumferential speed than the photosensitive drum 110. driving the rotation At this time, since the developing roller 150 and the photoreceptor drum 110 or the toner regulation blade 130 are in pressurized contact, if these contact areas are left in a high temperature and high humidity state, pressure contact marks may be formed or the photosensitive drum 110 may be contaminated.

현상롤러(150)는 샤프트, 탄성층, 코팅층으로 구성된다. 샤프트는 선정된 강도와 전도성을 갖도록 형성되며, 4~12㎜의 외경인 알루미늄, 스테인리스스틸(SUS) 재질 또는 카본스틸(SUM)에 니켈(Ni) 도금한 금속 물질이 사용될 수 있다. 탄성층은 실리콘 고무 재료가 사용될 수 있으며, 도전제로서 카본 블랙 등이 첨가될 수 있으며, 탄성층의 두께는 1~5㎜로 형성될 수 있다.The developing roller 150 is composed of a shaft, an elastic layer, and a coating layer. The shaft is formed to have a selected strength and conductivity, and aluminum with an outer diameter of 4 to 12 mm, a stainless steel (SUS) material, or a metal material plated with nickel (Ni) on carbon steel (SUM) may be used. A silicone rubber material may be used for the elastic layer, carbon black or the like may be added as a conductive agent, and the elastic layer may have a thickness of 1 to 5 mm.

도 2는 본 발명의 일실시예에 따른 현상롤러 제조방법의 흐름을 도시한 순서도이다.2 is a flow chart showing the flow of a method for manufacturing a developing roller according to an embodiment of the present invention.

본 발명에 따른 샤프트, 상기 샤프트의 외주면에 형성되는 탄성층, 상기 탄성층의 외주면에 형성되는 코팅층으로 구성되는 현상롤러의 제조방법은 크게 탄성층 형성, 코팅층 형성, 고분자화합물 형성으로 구현될 수 있다.The method for manufacturing a developing roller composed of a shaft, an elastic layer formed on the outer circumferential surface of the shaft, and a coating layer formed on the outer circumferential surface of the elastic layer according to the present invention can be largely implemented by forming an elastic layer, forming a coating layer, and forming a polymer compound. .

상기 샤프트의 외주면에 접착제를 도포하고, 상기 접착제가 도포된 샤프트를 실린더 형상 금형의 중공부에 위치시킨다(단계(211)). 상기 실린더 형상 금형과 상기 샤프트 사이의 공간에 액상 실리콘고무 컴파운드를 주형하고, 상기 주형된 액상 실리콘고무 컴파운드를 170~200℃의 온도로 15~30분간 가열하여 실리콘고무 컴파운드를 가류한 후 상기 실린더 형상 금형에서 탈형한다(단계(212)). 상기 탈형된 실리콘고무 컴파운드를 200℃의 온도로 2~4시간 동안 가열한 후, 선정된 직경과 거칠기로 연마하여 상기 샤프트 외주면에 상기 탄성층을 형성한다(단계(213)). 이와 같이 단계(211) 내지 단계(213)의 공정을 통해 샤프트의 외주면에 탄성층이 형성된다.An adhesive is applied to the outer circumferential surface of the shaft, and the shaft to which the adhesive is applied is placed in the hollow of a cylindrical mold (step 211). A liquid silicone rubber compound is molded in the space between the cylindrical mold and the shaft, and the molded liquid silicone rubber compound is heated at a temperature of 170 to 200 ° C. for 15 to 30 minutes to vulcanize the silicone rubber compound, and then the cylinder shape Demold from the mold (step 212). The demolded silicone rubber compound is heated at a temperature of 200° C. for 2 to 4 hours, and then polished to a predetermined diameter and roughness to form the elastic layer on the outer circumferential surface of the shaft (step 213). As such, an elastic layer is formed on the outer circumferential surface of the shaft through the processes of steps 211 to 213.

탄성층 형성은 실리콘고무 컴파운드로 상기 도전성 샤프트 주변을 둘러싸도록 형성하기 위한 과정으로, 탄성층은 실리콘고무에 도전제 및 경화제 등을 배합해 형성되며 저저항, 저경도의 탄성 물질이 사용될 수 있다. 탄성층의 저항은 104~108Ω㎝가 바람직하고, 탄성층의 고무경도(Asker A)는 20~60°가 바람직하다. 경도가 60°를 넘으면 토너가 손상될 수 있고, 20°미만이 되면 압축영구변형이 커질 수 있다.Forming the elastic layer is a process for forming a silicone rubber compound to surround the conductive shaft. The elastic layer is formed by mixing silicone rubber with a conductive agent and a curing agent, and an elastic material with low resistance and low hardness may be used. The resistance of the elastic layer is preferably 10 4 to 10 8 Ωcm, and the rubber hardness (Asker A) of the elastic layer is preferably 20 to 60°. If the hardness exceeds 60°, the toner may be damaged, and if the hardness is less than 20°, compression set may increase.

단계(213) 이후, 상기 탄성층을 액상 우레탄 코팅액에 담그거나 상기 탄성층의 외주면에 액상 우레탄 코팅액을 분사하여 상기 탄성층의 외주면에 선정된 두께의 코팅층을 형성한다(단계(214)). 이후 상기 코팅층을 90~200℃에서 30~120분 동안 가류한다(단계(215)). 또한, 상기 코팅층에 15~55초 동안 자외선을 조사한다(단계(216)). 이와 같이 코팅층은 탄성층의 외주면에 우레탄 코팅액에 담가 표면 코팅층을 형성하는 디핑 방법으로 형성될 수도 있고, 탄성층의 외주면에 자외선을 일정시간 동안 조사하는 방법으로 코팅층이 형성될 수도 있으며, 우레탄 코팅액을 탄성층의 표면에 분사하는 방법으로 코팅층이 형성될 수도 있다.After step 213, a coating layer having a predetermined thickness is formed on the outer circumferential surface of the elastic layer by immersing the elastic layer in the liquid urethane coating liquid or spraying the liquid urethane coating liquid on the outer circumferential surface of the elastic layer (step 214). Thereafter, the coating layer is cured at 90 to 200° C. for 30 to 120 minutes (step 215). In addition, ultraviolet rays are irradiated to the coating layer for 15 to 55 seconds (step 216). In this way, the coating layer may be formed by a dipping method in which the outer circumferential surface of the elastic layer is dipped in a urethane coating liquid to form a surface coating layer, or the coating layer may be formed by irradiating ultraviolet rays on the outer circumferential surface of the elastic layer for a certain period of time. The coating layer may be formed by spraying on the surface of the elastic layer.

코팅층을 형성함에 있어서 우레탄 코팅 처리한 후 코팅 부분을 가류함으로써 제조공정상 발생할 수 있는 비정상적인 무늬나 흠집을 제거할 수 있다. 또한, 우레탄 코팅 처리한 후 코팅 부분에 자외선을 추가로 조사하는 방법도 있을 수 있다. 이 때, 상기 가류작업은, 90∼130℃의 온도 범위에서 30∼120분 정도 진행하는 것이 바람직하며, 상기 자외선 조사는 15∼55초 동안 조사하는 것이 바람직하다. 코팅층이 형성된 다음에는 후처리/후가공을 통하여 최종 형상 및 조건을 세팅하고 냉각/가열/건조 등의 작업과 외관 사상작업을 통하여 현상롤러 완제품을 생산할 수 있다.In forming the coating layer, abnormal patterns or scratches that may occur in the manufacturing process may be removed by vulcanizing the coated portion after urethane coating treatment. In addition, there may be a method of additionally irradiating ultraviolet rays to the coated portion after the urethane coating treatment. At this time, the curing operation is preferably carried out for about 30 to 120 minutes at a temperature range of 90 to 130 ° C., and the ultraviolet irradiation is preferably irradiated for 15 to 55 seconds. After the coating layer is formed, the final shape and conditions are set through post-processing/processing, and a finished product of the developing roller can be produced through operations such as cooling/heating/drying and exterior deburring.

본 발명의 일실시예에 따르면, 코팅층의 형성 이후 고분자화합물이 더 형성되도록 할 수 있다. 상기 코팅층의 표면에 파장 180nm 내지 300nm 범위의 UV lamp 또는 파장 172nm의 Excimer lamp 등의 고에너지 자외선을 조사하여 상기 탄성층과 상기 코팅층 사이에 고분자화합물을 형성한다(단계(217)). 상기 코팅층의 외표면에 고에너지 자외선을 조사하면 자외선 빛은 박막으로 형성된 코팅층을 투과해 상기 탄성층까지 도달하게 된다. 이때, 탄성층 외표면의 고분자화합물과 맞닿는 상기 코팅층 내표면의 고분자화합물은 고에너지 자외선 빛에 의해 화학적 연결사슬이 끊어진 후, 상기 탄성층과 상기 코팅층 사이에서 새로운 고분자화합물로 재결합 생성되어 상기 탄성층과 상기 코틴층을 일체시키게 된다.According to one embodiment of the present invention, a polymer compound may be further formed after the formation of the coating layer. A polymer compound is formed between the elastic layer and the coating layer by irradiating the surface of the coating layer with high-energy ultraviolet rays such as a UV lamp in a wavelength range of 180 nm to 300 nm or an Excimer lamp in a wavelength of 172 nm (step 217). When the outer surface of the coating layer is irradiated with high-energy UV light, the UV light penetrates the coating layer formed of a thin film and reaches the elastic layer. At this time, the polymer compound on the inner surface of the coating layer in contact with the polymer compound on the outer surface of the elastic layer is recombined into a new polymer compound between the elastic layer and the coating layer after the chemical linking chain is broken by high-energy ultraviolet light, and the elastic layer And the cotin layer is integrated.

따라서, 본 발명에 따라 제조되는 현상롤러는 표면 마찰계수 증가가 일어나지 않고 오히려 마찰계수가 최소수준을 지속적으로 유지함으로써 수명이 극대화될 수 있다. 또한, 탄성층과 코팅층 사이에 생성되는 새로운 고분자화합물에 의해 탄성층과 코팅층을 일체화시킬 수 있어 내구성을 극대화할 수 있다. Therefore, the developing roller manufactured according to the present invention does not increase the surface friction coefficient, but rather maintains the minimum friction coefficient continuously, so that the lifespan can be maximized. In addition, since the elastic layer and the coating layer can be integrated by a new polymer compound generated between the elastic layer and the coating layer, durability can be maximized.

이상과 같이 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 상기의 실시예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다.As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art in the field to which the present invention belongs can make various modifications and variations from these descriptions. this is possible

그러므로, 본 발명의 범위는 설명된 실시예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐 아니라 이 특허청구범위와 균등한 것들에 의해 정해져야 한다.Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined, and should be defined by not only the claims to be described later, but also those equivalent to these claims.

110: 감광드럼
120: 토너공급롤러
130: 토너규제 블레이드
140: 토너
150: 현상롤러110: photosensitive drum
120: toner supply roller
130: toner regulation blade
140: toner
150: developing roller

Claims (3)

샤프트, 상기 샤프트의 외주면에 형성되는 탄성층, 상기 탄성층의 외주면에 형성되는 코팅층으로 구성되는 현상롤러의 제조방법에 있어서,
상기 샤프트의 외주면에 접착제를 도포하고, 상기 접착제가 도포된 샤프트를 실린더 형상 금형의 중공부에 위치시키는 단계;
상기 실린더 형상 금형과 상기 샤프트 사이의 공간에 액상 실리콘고무 컴파운드를 주형하고, 상기 주형된 액상 실리콘고무 컴파운드를 170~200℃의 온도로 15~30분간 가열하여 실리콘고무 컴파운드를 가류한 후 상기 실린더 형상 금형에서 탈형하는 단계;
상기 탈형된 실리콘고무 컴파운드를 200℃의 온도로 2~4시간 동안 가열한 후, 선정된 직경과 거칠기로 연마하여 상기 샤프트 외주면에 상기 탄성층을 형성하는 단계; 및
상기 탄성층을 액상 우레탄 코팅액에 담그거나 상기 탄성층의 외주면에 액상 우레탄 코팅액을 분사하여 상기 탄성층의 외주면에 선정된 두께의 코팅층을 형성하는 단계
를 포함하는 것을 특징으로 하는 현상롤러의 제조방법.A method for manufacturing a developing roller comprising a shaft, an elastic layer formed on an outer circumferential surface of the shaft, and a coating layer formed on an outer circumferential surface of the elastic layer,
applying an adhesive to an outer circumferential surface of the shaft and positioning the shaft to which the adhesive is applied in a hollow part of a cylindrical mold;
A liquid silicone rubber compound is molded in the space between the cylindrical mold and the shaft, and the molded liquid silicone rubber compound is heated at a temperature of 170 to 200 ° C. for 15 to 30 minutes to vulcanize the silicone rubber compound, and then the cylinder shape demolding from the mold;
forming the elastic layer on the outer circumferential surface of the shaft by heating the demolded silicone rubber compound at a temperature of 200° C. for 2 to 4 hours and polishing the compound to a predetermined diameter and roughness; and
Forming a coating layer having a predetermined thickness on the outer circumferential surface of the elastic layer by immersing the elastic layer in a liquid urethane coating liquid or spraying the liquid urethane coating liquid on the outer circumferential surface of the elastic layer
A method for manufacturing a developing roller comprising a. 제1항에 있어서,
상기 코팅층을 90~200℃에서 30~120분 동안 가류하는 단계; 및
상기 코팅층에 15~55초 동안 자외선을 조사하는 단계
를 더 포함하는 것을 특징으로 하는 현상롤러의 제조방법.According to claim 1,
curing the coating layer at 90 to 200° C. for 30 to 120 minutes; and
Irradiating ultraviolet rays to the coating layer for 15 to 55 seconds
A method of manufacturing a developing roller, characterized in that it further comprises. 제1항에 있어서,
상기 코팅층의 표면에 파장 180nm 내지 300nm 범위의 UV lamp 또는 파장 172nm의 Excimer lamp 등의 고에너지 자외선을 조사하여 상기 탄성층과 상기 코팅층 사이에 고분자화합물을 형성하는 단계
를 더 포함하는 것을 특징으로 하는 현상롤러의 제조방법.According to claim 1,
Forming a polymer compound between the elastic layer and the coating layer by irradiating the surface of the coating layer with high-energy ultraviolet rays such as a UV lamp with a wavelength of 180 nm to 300 nm or an Excimer lamp with a wavelength of 172 nm.
A method of manufacturing a developing roller, characterized in that it further comprises.
KR1020210176064A 2021-12-09 2021-12-09 Manufacturing method of developing roller inclouding coating layer KR20230087690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020210176064A KR20230087690A (en) 2021-12-09 2021-12-09 Manufacturing method of developing roller inclouding coating layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020210176064A KR20230087690A (en) 2021-12-09 2021-12-09 Manufacturing method of developing roller inclouding coating layer

Publications (1)

Publication Number Publication Date
KR20230087690A true KR20230087690A (en) 2023-06-19

Family

ID=86988356

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020210176064A KR20230087690A (en) 2021-12-09 2021-12-09 Manufacturing method of developing roller inclouding coating layer

Country Status (1)

Country Link
KR (1) KR20230087690A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862064B1 (en) 2008-06-20 2008-10-09 해성태프론 주식회사 Developer-carring roller of process cartredge and menufactoring method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862064B1 (en) 2008-06-20 2008-10-09 해성태프론 주식회사 Developer-carring roller of process cartredge and menufactoring method thereof

Similar Documents

Publication Publication Date Title
JP2019020727A (en) Electrophotographic member, process cartridge, and electrophotographic image forming apparatus
JP2000329137A (en) Resin roller and its manufacture
JP2001050247A (en) Semi-conductive roll and developing device using the same
JP2017173714A (en) Developer carrier, process cartridge, and electronic photograph image formation device
JP4341640B2 (en) Conductive roll for electrophotographic equipment and method for producing the same
JP4184140B2 (en) Centrifugal mold, method for producing the same, centrifugal molded body and blade produced using the same, and method for producing the same
KR20230087690A (en) Manufacturing method of developing roller inclouding coating layer
JP2007167711A (en) Surface treatment method for rubber roller
JP2007023220A (en) Method and apparatus for ultraviolet irradiation
JPH1173006A (en) Semiconductive roll and developing device using thereof
JP4636942B2 (en) Roller manufacturing method, roller, developing roller, developing device, electrophotographic process cartridge, and image forming apparatus
JP2003039452A (en) Rubber roller manufacturing method
JP6488166B2 (en) Developing roller, developing device, and image forming apparatus
JP2007171849A (en) Developing roll manufacturing method and developing roll obtained by the same
JPH10318249A (en) Semi-conductive roll and developing device
JPH09197801A (en) Conductive silicon based rubber roll
KR20110028168A (en) Method for fabricating semi-conductive roller and semi-conductive roller using thereof
KR100497488B1 (en) Developing roller for image forming apparatus manufacturing method
JP2007033843A (en) Developing roller and developing apparatus
JP3950591B2 (en) Rubber roller and manufacturing method thereof
JP2004361853A (en) Developing device
JP2005037602A (en) Elastic member and image forming apparatus
JP4186709B2 (en) Developing roller, manufacturing method thereof, and image forming apparatus
JP2003186298A (en) Developing roller
JP5301754B2 (en) Developer carrier and developing device