WO2010021401A1 - 帯電ローラの製造方法および該方法により製造された帯電ローラ - Google Patents
帯電ローラの製造方法および該方法により製造された帯電ローラ Download PDFInfo
- Publication number
- WO2010021401A1 WO2010021401A1 PCT/JP2009/064740 JP2009064740W WO2010021401A1 WO 2010021401 A1 WO2010021401 A1 WO 2010021401A1 JP 2009064740 W JP2009064740 W JP 2009064740W WO 2010021401 A1 WO2010021401 A1 WO 2010021401A1
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- WIPO (PCT)
- Prior art keywords
- shaft
- charging roller
- elastic layer
- manufacturing
- roller
- Prior art date
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Classifications
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- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
- G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
- G03G15/0233—Structure, details of the charging member, e.g. chemical composition, surface properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
Definitions
- the present invention relates to a method of manufacturing a charging roller and a charging roller manufactured by the method (hereinafter, also simply referred to as “roller”), and more specifically, it is possible to manufacture a charging roller more easily and accurately at a low cost.
- the present invention relates to a method for manufacturing a charging roller and a charging roller manufactured by the method.
- a transfer roller In general, in an image forming apparatus using an electrophotographic system such as a copying machine, a printer, and a facsimile machine, a transfer roller, a developing roller, a toner supply roller, a charging roller, a cleaning roller, an intermediate transfer roller, and a belt are used in each image forming process.
- Patent Document 1 discloses a method for manufacturing a foam roller, which includes a step of coating and forming a coating film on the inner peripheral surface of a cylindrical mold having no secant on the cylindrical inner peripheral surface. Has been.
- Patent Document 3 discloses a foam apparatus for a roller foam in which a through hole is formed in the center of a lid mold, one through hole is a raw material injection hole, and the other through hole is a shaft insertion hole of a roller. Is disclosed. Furthermore, Patent Document 4 discloses an elastic roller mold in which a pipe is provided inside a cylindrical mold.
- Patent Document 5 a cap having an inlet for an elastic layer material is fitted to both ends of a cored bar, and then the cored bar is mounted in a molding die.
- a method for manufacturing a roller is disclosed in which after the material is injected and the roller is molded and demolded, if necessary, a conductive film is formed on the surface of the elastic layer and the cap is removed from the roller.
- a foam which is a material of the elastic layer of the roller, is injected from the upper end of the molding die into a cavity formed inside the molding die, and the air in the cavity is molded.
- a method for manufacturing a roller that exhausts air from the lower end of a metal mold is disclosed.
- Patent Document 7 the coating film layer of the roller is subjected to ultraviolet irradiation treatment by the ultraviolet irradiation means continuously immediately after the coating process, and the ultraviolet irradiation means and the roller are moved relative to each other in the axial direction.
- a ring coater coating method for curing the surface of this is disclosed.
- Patent Documents 1 to 6 have the following problems because the charging roller has a urethane foam, an adhesive layer / intermediate layer made of water-based urethane paint, and an upper layer made of solvent-based paint on the outer periphery of the shaft.
- molding of urethane foam requires a high-precision mold, a large amount of mold costs are required, and the quality control of the mold for maintaining accuracy is troublesome.
- a consumable part for the molded member is required, a consumable part cost is required.
- there are many processes there are many check items related to production such as quality control of paint and management of drying conditions.
- a lot of energy is used for the thermal drying of the paint.
- the ring coater coating method described in Patent Document 7 can effectively prevent dripping and can eliminate uneven coating and non-uniformity of the coating layer. Therefore, it is necessary to strictly adjust the apparatus. Therefore, a simpler and more accurate method of manufacturing a charging roller is desired.
- an object of the present invention is to provide a charging roller manufacturing method and a charging roller manufactured by the method capable of solving the above-described problems and manufacturing a charging roller with high accuracy at low cost more easily. It is in.
- the inventors of the present invention directly immerse the shaft in a coating solution containing an ultraviolet curable resin, and simultaneously irradiate with ultraviolet rays (UV) to cure the coating.
- UV ultraviolet rays
- the method for manufacturing a charging roller according to the present invention includes a shaft, an elastic layer formed on the outer periphery of the shaft, and a surface layer formed on the outer peripheral surface of the elastic layer.
- the shaft is moved downward so that the major axis direction of the shaft is perpendicular to the liquid surface of the coating solution containing an ultraviolet curable resin, and immersed in the coating solution and after the immersion step, While pulling up the shaft vertically upward, An ultraviolet irradiation step of irradiating ultraviolet rays to the outer circumference of the shaft in the major axis direction to form the elastic layer.
- the method for manufacturing a charging roller according to the present invention it is preferable to perform the dipping step and the ultraviolet irradiation step a plurality of times. Further, the ultraviolet irradiation intensity in the ultraviolet irradiation step is set to 0.1 to 4 W / cm 2, and after the ultraviolet irradiation step, the elastic layer is again irradiated with ultraviolet rays at an ultraviolet irradiation intensity of 120 to 240 W / cm 2. Is preferred.
- a lifting speed of the shaft upward in the vertical direction after the dipping step is 1.1 mm / s to 20 mm / s.
- the viscosity is preferably 0.5 to 10 Pa ⁇ s.
- the charging roller of the present invention is manufactured by the method for manufacturing the charging roller.
- the present invention it is possible to provide a charging roller manufacturing method capable of manufacturing a highly accurate charging roller more easily at low cost, and a charging roller manufactured by the method.
- FIG. 1 is a diagram illustrating an example of the operation of the charging roller elastic layer manufacturing apparatus.
- the shaft 1 is held by a shaft holding mechanism 5 of the elevator 4.
- the holding method by the holding part 5a of the shaft holding mechanism 5 is not limited as long as the shaft 1 can be held.
- the shaft 1 may be held and the shaft 1 may be held by a strong magnet or the like. .
- a solution tank containing a coating solution 8 containing an ultraviolet curable resin (hereinafter also referred to as “UV coating”) is installed on the base 9 of the elevator 4.
- UV coating an ultraviolet curable resin
- the size of the solution tank only needs to be able to immerse the entire shaft 1. In the case of a large solution tank, a plurality of shafts 1 can be immersed at the same time, and the cost can be further reduced.
- the shaft 1 is arranged so that the direction of the arrow A in FIG. 1A, that is, the major axis direction of the shaft 1 is perpendicular to the liquid surface 8a of the UV paint 8. It moves downward and is immersed in the UV paint 8 (immersion process). At this time, as shown in FIG. 1B, it is important that the upper end of the shaft 1 on which the elastic layer is formed is completely immersed in the UV paint 8 so as to be below the liquid surface 8a.
- the movement of the shaft 1 is performed by moving the arm part 4a of the elevator 4 up and down, for example. in this way.
- the shaft 1 is pulled up in the direction of arrow B in FIG.
- the outer periphery is irradiated with ultraviolet rays (hereinafter also referred to as “UV”) to form an elastic layer (ultraviolet irradiation step).
- UV ultraviolet rays
- the shaft 1 is lifted, for example, by raising and lowering the arm portion 4a of the elevator 4 as described above.
- the UV coating 8 is directly immersed in the shaft 1 and pulled up, and the shaft 1 reaches the ultraviolet irradiator 7 and at the same time, the shaft 1 is irradiated with UV to be cured, so that the elastic layer is formed in a very short time. Can be made.
- it is a dipping method in which the UV paint 8 is immersed, an elastic layer can be produced without using a mold or a molding lid, and a charging roller can be produced more easily and accurately at low cost. .
- the ultraviolet irradiation is performed by the ultraviolet irradiation machine 7.
- the ultraviolet irradiator 7 has a ring shape that can uniformly irradiate UV from the circumferential direction of the workpiece, and can move the shaft 1 up and down through a central hole portion of the ring shape.
- FIG. 2 is a diagram illustrating an example of an ultraviolet irradiator.
- the ultraviolet irradiator 7A includes an ultraviolet transmissive lens 7a and an optical fiber 7b, and irradiates ultraviolet rays generated by the ultraviolet ray generator (mercury lamp 7c) from the ultraviolet transmissive lens 7a through the optical fiber 7b.
- FIG. 3 is a diagram showing another example of the ultraviolet irradiator.
- the ultraviolet irradiator 7B includes an LED 7d and a power cable 7e. The LED 7d emits ultraviolet light and irradiates the ultraviolet light.
- FIG. 4 is a view showing another example of the ultraviolet irradiator, and is a view showing a ring-shaped ultraviolet irradiator that can be divided.
- 7f is an ultraviolet transmissive lens and 7g is an optical fiber, but 7f can be an LED and 7g can be a power cable.
- the ultraviolet irradiator 7C divides the ring 7h and retreats to a position where it does not collide with the arm portion 4a, and the arm portion 4a of the elevator 4 rises to the upper end of the shaft 1
- the divided ring 7h is combined to irradiate the ultraviolet light, thereby simplifying the shaft holding mechanism 5 and reducing the positional accuracy of the ring 7h and the work. It can be performed.
- the dipping step and the ultraviolet irradiation step are preferably performed once or a plurality of times, more preferably 1 to 3 times.
- the ultraviolet irradiation intensity in the ultraviolet irradiation is not limited as long as the UV paint 8 coated on the outer periphery of the shaft 1 can be cured, but the ultraviolet irradiation intensity is preferably 0.1 to 4 W / cm 2 .
- the ultraviolet irradiation intensity is 0.1 ⁇ 4W / cm 2, with respect to the elastic layer, it is also preferable to perform irradiation again ultraviolet ultraviolet irradiation intensity 120 ⁇ 240W / cm 2.
- the lifting speed of the shaft 1 in the upward direction in the vertical direction when the shaft 1 is pulled up from the state immersed in the paint after the dipping process is limited as long as the UV paint 8 can be uniformly coated on the outer periphery of the shaft 1.
- the film thickness can be freely changed by adjusting the pulling speed.
- the pulling speed is preferably 1.1 mm / s to 20 mm / s. By setting the pulling speed within this range, more uniform coating can be achieved.
- the UV paint 8 only needs to contain an ultraviolet curable resin, which will be described later. As long as it can be used as an elastic layer of a normal charging roller as another component, It can mix
- the viscosity of the UV paint 8 is not limited as long as the UV paint 8 can be uniformly applied on the outer periphery of the shaft 1, but the viscosity of the UV paint 8 is preferably 0.5 to 10 Pa ⁇ s. . By setting it as this range, it can paint more uniformly.
- the thickness of the UV coating film coated with the UV paint 8 is preferably 0.5 to 2 mm, and more preferably 0.9 to 1.3 mm. By setting this range, an elastic layer having a crown shape can be easily produced.
- the manufacturing method of the charging roller of the present invention essentially requires the formation of an elastic layer by an immersion process and an ultraviolet irradiation process. Therefore, the method for producing the surface layer formed on the elastic layer is not particularly limited, and usually a coating solution in which the above resin component and conductive agent are dispersed or dissolved is prepared, and this coating solution is dipped or sprayed.
- a method of applying a heat coating after applying by a method such as a roll coater method is used, and either a conventional water-based coating solution or a solvent-based coating solution may be used.
- a solvent for preparing the said coating solution according to the kind etc.
- base resin which comprises a resin composition
- a fluororesin methyl ethyl ketone ( MEK), methyl isobutyl ketone (MIBK), toluene, xylene and the like are preferably used.
- MEK methyl ethyl ketone
- MIBK methyl isobutyl ketone
- toluene xylene and the like are preferably used.
- FIG. 4 is a view showing an example of a charging roller according to a preferred embodiment of the present invention.
- a charging roller 10 according to the present invention is manufactured by the method for manufacturing a charging roller according to the present invention, and includes a shaft 1, an elastic layer 2 formed on the outer periphery of the shaft 1, and an outer peripheral surface of the elastic layer 2. The formed surface layer 3 is provided.
- the ultraviolet curable resin is not limited as long as the desired effect of the present invention is obtained, but the following (1) to (4), (1) Good adhesion to the shaft 1 (2) Volume resistivity of 10 6 to 10 8 ⁇ ⁇ cm (3) It is preferably an ultraviolet curable resin having flexibility and high breaking strength, and (4) no low molecular conductive agent bleeding out. Thereby, it is possible to have both characteristics of the foam elastic layer and the solid skin layer in the conventional charging roller.
- the ultraviolet curable resin examples include polyester resin, polyether resin, fluororesin, epoxy resin, amino resin, polyamide resin, acrylic resin, acrylic urethane resin, urethane resin, alkyd resin, phenol resin, melamine resin, urea resin, silicone Resins, polyvinyl butyral resins, vinyl ether resins, vinyl ester resins, and modified resins in which specific functional groups are introduced into these resins can be used. These resins can be used alone or in combination of two or more. Also good.
- the compound can contain a reactive diluent as necessary.
- the compound preferably contains a photopolymerization initiator and a photopolymerization accelerator. In addition, you may contain a well-known additive as needed.
- Such an ultraviolet curable resin is particularly preferably a urethane acrylate ultraviolet curable resin composition containing an oligomer having a urethane skeleton and an ultraviolet polymerization initiator.
- any suitable conductive agent that can be added to the ultraviolet curable resin of the elastic layer 2 can be used.
- the carbon-based conductive agent ketjen black or acetylene black is used as rubber carbon black.
- carbon black for ink such as oxidized carbon black, pyrolytic carbon black, graphite and the like can also be used.
- a polymer ionic conductive agent can be added as a conductive agent.
- a polymer ionic conductive agent examples are described in JP-A-9-227717, JP-A-10-120924 and JP-A-2000-327922. However, it is not particularly limited.
- component (A) comprises: Polyacrylic acid ester, polymethacrylic acid ester, polyacrylonitrile, polyvinyl alcohol, polyvinyl acetate, polyamide, polyurethane or polyester, component (B) is oligoethoxylated acrylate or methacrylate, oligoethoxylated styrene for aromatic ring , Polyether urethane, polyether urea, polyether amide, polyether ester amide or polyether ester, and component (C) is an inorganic or low molecular weight organic protonic acid alkali metal, alkaline earth metal, zinc or An ammonium salt, preferably, LiClo 4, LiCF 3 SO 3 , NaClo 4, LiBF 4, NaBF 4, KBF 4, NaCF 4 SO 3,
- the elastic layer 2 preferably has a thickness of 0.9 to 1.3 mm.
- the thickness of the elastic layer 2 is less than 0.9 mm, spark discharge may occur from the cored bar (shaft) to the photoreceptor, particularly in a high temperature and low humidity region represented by Central America and the like, which is not preferable.
- the thickness of the elastic layer 2 exceeds 1.3 mm, it is not preferable because it is extremely difficult to control the outer diameter at the time of dipping coating, and a left-right difference is likely to occur.
- the shaft 1 is made of metal or plastic, and can be a hollow cylinder or a solid cylinder, and is preferably a metal hollow cylinder or a solid cylinder. More preferably, it is a metal hollow cylinder. As a result, the cost can be further reduced.
- a resin usually used for a charging roller can be used, and examples thereof include the ultraviolet curable resin and the thermosetting resin.
- thermosetting resin that can be used for the surface layer 3 known rubbers and resins used for forming the surface layer of the charging member can be used, and are not particularly limited.
- An acrylic resin, a polyurethane resin, an acrylic resin, a polyamide resin, a fluororesin and the like are exemplified, and one or two or more of these can be used in combination.
- a fluororesin is preferably used from the viewpoint that toner adhesion resistance on the surface of the charging roller can be imparted.
- fluororesin examples include polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-ethylene copolymer, polychlorotrifluoroethylene, chlorotrifluoroethylene-ethylene copolymer. And tetrafluoroethylene-vinylidene fluoride copolymer, polyvinylidene fluoride, polyvinyl fluoride and the like.
- the resin forming the surface layer 3 is not particularly limited, but the conductivity (electric resistance) of the surface layer can be imparted or adjusted by adding a conductive agent.
- the conductive agent is not particularly limited, and various electronic conductive agents and various ionic conductive agents can be used. In the present invention, it is particularly preferable to use carbon.
- the addition amount of the conductive agent can be appropriately adjusted so that a desired resistance is obtained.
- the volume resistivity of the surface layer 3 is preferably 1 ⁇ 10 4 to 1 ⁇ 10 12 ⁇ ⁇ cm, and more preferably 1 ⁇ 10 6 to 1 ⁇ 10 8 ⁇ ⁇ cm.
- the addition amount of the conductive agent can be adjusted so as to achieve, and the addition amount when carbon is used as the conductive agent is usually about 1 to 100 phr, particularly about 10 to 70 phr with respect to the base resin.
- additives such as a crosslinking agent, a thickener, a thixotropy imparting agent, and a structural viscosity imparting agent can be added to the resin composition forming the surface layer 3 as necessary.
- the thickness of the surface layer 3 is set according to the form of the charging roller 10 and the like, and is not particularly limited, but is usually 1 to 30 ⁇ m, particularly 1 to 20 ⁇ m, and if it is less than 1 ⁇ m, In some cases, the durability of the roller is inferior. On the other hand, if it exceeds 20 ⁇ m, good surface properties may not be obtained, such as adversely affecting the charging characteristics or causing wrinkles on the surface.
- FIG. 5 is a view showing another example of the charging roller according to the preferred embodiment of the present invention. Since it is important to form a uniform contact surface in the length direction when pressed against the photosensitive drum, the charging roller 20 has a crown shape whose central portion in the length direction has a larger diameter than the end portion. .
- an elastic layer having a crown shape can be produced by dipping and applying the UV paint 8.
- an elastic layer having a desired crown shape can be formed by adjusting the shaft lifting speed and appropriately changing the thickness of the elastic layer in the roller axial direction.
- the crown amount representing the degree of the projection is preferably 50 to 300 ⁇ m. It can be made good. When the crown amount is less than 50 ⁇ m, the contact pressure at the central portion in the roller length direction is low. On the other hand, when the crown amount is greater than 300 ⁇ m, the central portion in the roller length direction is too strong. In either case, the charge amount may be non-uniform.
- the crown amount of the charging roller in the present invention was measured using a high-precision laser measuring machine LSM-430v manufactured by Mitutoyo Corporation.
- the outer diameter is measured at the center of the roller and at the position of 90 mm from the center to the end, and the difference between the outer diameter of the center and the average value of the outer diameter at each position of 90 mm in the direction of both ends is calculated.
- the amount of roller crown For example, in a charging roller having a roller length of 250 mm, the outer diameter is measured at three points of 35 mm, 125 mm, and 215 mm from one end.
- the charging rollers 10 and 20 preferably have a deflection (film thickness accuracy) of 70 ⁇ m or less in the entire region in the roller length direction.
- a deflection (film thickness accuracy) of 70 ⁇ m or less in the entire region in the roller length direction.
- the charging rollers 10 and 20 and the photoconductor are rotating while being in contact with each other, when the shake of the charging rollers 10 and 20 is large, a gap is generated between the charging rollers 10 and 20 and the photoconductor. Furthermore, the gap distance also varies. In this case, the toner particles and the external additive remaining on the photosensitive member are liable to enter the gap and adhere to the charging rollers 10 and 20 as unevenness. Therefore, the surface of the roller becomes mottled and causes image defects.
- the deflection of the charging rollers 10 and 20 was measured using a high precision laser measuring machine LSM-430v manufactured by Mitutoyo Corporation. With this measuring machine, the outer diameter was measured for each of the five points in the roller length direction, and the average value of the difference between the maximum value and the minimum value of the outer diameter measured for each point was taken as the shake.
- Examples 1 to 5 Provide of elastic layer
- a hollow cylindrical shaft 1 material: aluminum A6063, length: 230 mm, thickness 0.7 mm, outer diameter ⁇ 18 mm
- a tank having a depth in which it can be immersed and a ring shape installed above the tank
- an apparatus having an elevator 4 capable of holding the shaft 1 perpendicular to the liquid surface see FIG. 1).
- the tank was filled with a UV paint 8 having a viscosity of 5.100 Pa ⁇ s and shown in Table 1 below, and the shaft 1 was installed in the elevator 4.
- the film thickness, runout, crown amount and left / right difference in outer diameter of each layer were measured, and the results are also shown in Table 2 below.
- the charging roller could be manufactured more easily at low cost.
- a highly accurate charging roller with small runout and appropriate crown amount could be manufactured.
- the amount of paint increases in order to adhere the amount of resin necessary for one dipping and ultraviolet irradiation process to the shaft, and a small amount of liquid in the downward direction along the shaft axis when pulled up. Sagging occurred, and as a result, the deflection and the left-right difference in outer diameter became slightly large.
- the thickness of the elastic layer obtained depends on both the pulling speed and the viscosity of the paint, but if the film thickness is too thick, curing tends to be insufficient, so that the pulling speed and the viscosity of the paint can be obtained to obtain an appropriate film thickness. It can be seen that it is important to set both. In the charging rollers using the elastic layers of Reference Examples 8 and 9, since the elastic layer film thickness was thin, a discharge occurred between the shaft of the charging roller and the photosensitive drum.
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Abstract
Description
(1)ウレタン発泡体の成型には高精度金型を必要とするため多額な金型費がかかり、精度を維持するための金型の品質管理に手間がかかる。また、成型部材の消耗品が必要なため消耗品費もかかる。
(2)水系ウレタン塗料を多層塗装するために塗装、常温乾燥、熱乾燥を繰り返し行わなければならず、生産に非常に時間がかかる。また、工程が多いため塗料の品質管理、乾燥条件の管理、など生産に関するチェック項目が多い。
(3)塗料の熱乾燥のために、エネルギーを多く使用する。
前記シャフトを、該シャフトの長軸方向が紫外線硬化型樹脂を含む塗料溶液の液面に対して垂直方向になるように下向きに移動して、前記塗料溶液に浸漬する浸漬工程と
浸漬工程後、前記シャフトを、垂直方向上向きに引き上げるとともに、
引き上げられた前記シャフトの長軸方向の外周に対し、紫外線を照射して前記弾性層を形成する紫外線照射工程と、を有することを特徴とするものである。
図1は、帯電ローラの弾性層作製装置の操作の一例を示す図である。図1(a)に示すように、シャフト1は、昇降機4のシャフト保持機構5で保持されている。シャフト保持機構5の保持部5aによる保持方法は、シャフト1を保持できればその方法は限定されず、例えば、シャフト1を挟んで保持したり、シャフト1を強力な磁石等で保持していてもよい。
(1)シャフト1に対する密着性がよい
(2)体積固有抵抗が106~108Ω・cm
(3)柔軟性があり、破断強度が大きい
(4)低分子導電剤のブリードアウトがない
の特性をもつ紫外線硬化型樹脂であることが好ましい。これにより、従来の帯電ローラにおける発泡体弾性層とソリッドスキン層の両方の特性を併せ持つことができる。
クラウン量(μm)={B-(A+C)/2}×1000 (1)
で求めることができる。
(実施例1~5)
(弾性層の作製)
(1)中空円筒体状のシャフト1(材質:アルミA6063,長さ:230mm,厚み0.7mm,外径φ18mm)を浸漬することができる深さを持つタンク、タンク上方に設置されたリング形の紫外線照射機7、および、シャフト1を液面に対し垂直に保持することができる昇降機4を有する装置を用いた(図1参照)。
(2)タンクに粘度5.100Pa・sの下記表1記載の配合処方のUV塗料8を満たし、シャフト1を昇降機4に設置した。
(3)昇降機4でシャフト1を上記タンク中に浸漬(塗装)させ、その後、下記表2記載の所定の時間(分)で引き上げた。引き上げ速度はいずれも4mm/sとした。
(4)紫外線照射機7へシャフト1が達した時にUVを照射し、下記表2,3記載の所定の時間(秒)でUV塗料を硬化させた。
(5)シャフト1全体が紫外線照射機7を通過するまで、引き上げた。
(6)実施例1~4については、必要な膜厚やクラウン形状を得るために上記(1)~(5)の操作を合計で2回繰り返した。
(7)UV硬化を完了させるために、最終工程では、FUSION製UVランプでワークを回転させながら150W/cm2のUVを照射した。
(1)実施例1,5については、下記表1記載の配合の溶剤系塗料を浸漬により塗装し、風乾30分の後、加熱炉で105℃210分の条件で加熱乾燥させ、硬化させた。また、実施例2,4については、それぞれ下記表1記載の配合処方の溶剤希釈UV塗料およびエマルジョン化させた水系UV塗料を浸漬により塗装し、風乾30分(水系塗料については60分)の後、UV照射を行い、硬化させた。さらに、実施例3については、下記表1記載の配合処方のモノマー希釈UV塗料を、上記弾性層の作製と同様に、昇降機4を有する装置(図1参照)を用いて浸漬塗装し、引き上げと同時にUV硬化させ、その後、さらにUV硬化させた。
(2)端部裁断
所定の位置で弾性層および表層を裁断して取り除き、シャフト1が露出する部分を作製し、図5に示す帯電ローラを作製した。
※2)商品名:サンコノール、三光化学工業株式会社製
※3)商品名:イルガキュア184、チバ・スペシャルティ・ケミカルズ社製
※4)ヌレート変性HDI(ヘキサメチレンジイソシアネート)
※5)商品名:UV3200B、日本合成化学工業株式会社製
※6)商品名:バーノック101-40、DIC株式会社製
※7)商品名:UF8001、共栄社化学株式会社製
※8)商品名:AMO、新中村化学工業株式会社製
※9)商品名:IBXA、共栄社化学株式会社製
※10)商品名:R5002、第一工業製薬株式会社製
※11)商品名:イルガキュア1173、チバ・スペシャルティ・ケミカルズ社製
ミツトヨ(株)製高精度レーザ測定機LSM-430vを用いて、外径を、ローラ長さ方向各5点について測定し、各点について測定した外径の最大値と最小値との差の平均値を振れ(mm)とした。
ミツトヨ(株)製高精度レーザ測定機LSM-430vを用いて、ローラ中央部及び中央部から端部へ向かう90mmの位置において外径を測定し、中央部の外径と両端部方向へ各90mmの位置における外径の平均値との差をローラクラウン量(μm)とした。
ミツトヨ(株)製高精度レーザ測定機LSM-430vを用いて、ローラ中央部から端部へ向かう90mmの位置において外径を測定し、両端部方向へ各90mmの位置における外径の差を求めて、外径左右差(μm)とした。
次に、浸漬工程および紫外線照射工程における条件を変えた際の弾性層の形成状態を確認するために、下記表4に示す溶剤系塗料の配合以外は実施例1と同様にして、弾性層の形成を行った。得られた弾性層について、実施例1等と同様にして膜厚、クラウン量および外径左右差を測定した。その結果を、弾性層表面のべたつきの有無とともに、下記表5,6中に示す。
2 弾性層
3 表層
4 昇降機
4a アーム部
5 シャフト保持機構
5a 保持部
7 紫外線照射機
7A,7B,7C 紫外線照射機
7a,7f 紫外線透過レンズ
7b,7g 光ファイバー
7c 水銀ランプ
7d LED
7e 電源ケーブル
7h リング
8 紫外線硬化型樹脂を含む塗料溶液(UV塗料)
8a 液面
9 昇降機の台座
10,20 帯電ローラ
Claims (6)
- シャフトと、該シャフトの外周に形成された弾性層と、該弾性層の外周面に形成された表層と、を備える帯電ローラの製造方法において、
前記シャフトを、該シャフトの長軸方向が紫外線硬化型樹脂を含む塗料溶液の液面に対して垂直方向になるように下向きに移動して、前記塗料溶液に浸漬する浸漬工程と、
浸漬工程後、前記シャフトを、垂直方向上向きに引き上げるとともに、
引き上げられた前記シャフトの長軸方向の外周に対し、紫外線を照射して前記弾性層を形成する紫外線照射工程と、を有することを特徴とする帯電ローラの製造方法。 - 前記浸漬工程と前記紫外線照射工程を複数回行う請求項1記載の帯電ローラの製造方法。
- 前記紫外線照射工程における紫外線照射強度を0.1~4W/cm2とし、該紫外線照射工程後に、前記弾性層に対し、紫外線照射強度120~240W/cm2で再度紫外線の照射を行う請求項1記載の帯電ローラの製造方法。
- 前記浸漬工程後の、前記シャフトの垂直方向上向きへの引き上げ速度が1.1mm/s~20mm/sである請求項1記載の帯電ローラの製造方法。
- 前記塗料溶液の粘度が、0.5~10Pa・sである請求項1記載の帯電ローラの製造方法。
- 請求項1記載の帯電ローラの製造方法により製造されたことを特徴とする帯電ローラ。
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CN2009801328114A CN102132220A (zh) | 2008-08-22 | 2009-08-24 | 带电辊的制造方法以及由该方法制造的带电辊 |
JP2010525727A JP5202636B2 (ja) | 2008-08-22 | 2009-08-24 | 帯電ローラの製造方法および該方法により製造された帯電ローラ |
KR1020117006401A KR20110044916A (ko) | 2008-08-22 | 2009-08-24 | 대전 롤러의 제조 방법 및 상기 방법에 의해 제조된 대전 롤러 |
US13/059,823 US20110206414A1 (en) | 2008-08-22 | 2009-08-24 | Method for manufacturing electrifying roller and electrifying roller manufactured by the method |
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CN102748379A (zh) * | 2012-07-03 | 2012-10-24 | 深圳创怡兴实业有限公司 | 带电辊及其涂胶方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09160355A (ja) * | 1995-12-07 | 1997-06-20 | Nippon Zeon Co Ltd | 帯電ロール |
JP2000343622A (ja) * | 1999-06-09 | 2000-12-12 | Kanegafuchi Chem Ind Co Ltd | 被覆層を有するゴムローラの製造方法 |
JP2006184895A (ja) * | 2004-12-02 | 2006-07-13 | Bridgestone Corp | 導電性ローラの製造方法 |
JP2007233367A (ja) * | 2006-02-02 | 2007-09-13 | Bridgestone Corp | 導電性弾性ローラ及びそれを備えた画像形成装置 |
JP2007232861A (ja) * | 2006-02-28 | 2007-09-13 | Canon Inc | 導電性ローラ |
JP2007248945A (ja) * | 2006-03-17 | 2007-09-27 | Bridgestone Corp | 導電性ローラ及びそれを備えた画像形成装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2089996C (en) * | 1992-04-13 | 2004-04-27 | Brent R. Boldt | Ultraviolet radiation curable gasket coating |
JP4008871B2 (ja) * | 2003-09-19 | 2007-11-14 | シャープ株式会社 | 円筒状基体に対する塗工液の塗布方法および塗布装置ならびに電子写真感光体の製造方法 |
WO2006001171A1 (ja) * | 2004-06-09 | 2006-01-05 | Bridgestone Corporation | 現像ローラ、帯電ローラ、導電性ローラ及びその製造方法 |
CN100416421C (zh) * | 2004-08-05 | 2008-09-03 | 佳能株式会社 | 充电部件、处理盒和电子照相装置 |
WO2006033353A1 (ja) * | 2004-09-22 | 2006-03-30 | Bridgestone Corporation | 導電性ローラ |
JP2006091303A (ja) * | 2004-09-22 | 2006-04-06 | Bridgestone Corp | 導電性ローラの製造方法およびこの方法により製造された導電性ローラ |
JP2007010764A (ja) * | 2005-06-28 | 2007-01-18 | Canon Chemicals Inc | 現像ローラ及び現像ローラの製造方法 |
US20070197362A1 (en) * | 2006-02-02 | 2007-08-23 | Bridgestone Corporation | Conductive elastic roller and image forming apparatus comprising the same |
JP5049627B2 (ja) * | 2007-03-28 | 2012-10-17 | 東海ゴム工業株式会社 | 紫外線硬化型導電性組成物ならびに電子写真機器用部材、電子写真機器用導電性ロールおよび電子写真機器用導電性ベルト |
-
2009
- 2009-08-24 CN CN2009801328114A patent/CN102132220A/zh active Pending
- 2009-08-24 US US13/059,823 patent/US20110206414A1/en not_active Abandoned
- 2009-08-24 WO PCT/JP2009/064740 patent/WO2010021401A1/ja active Application Filing
- 2009-08-24 KR KR1020117006401A patent/KR20110044916A/ko not_active Application Discontinuation
- 2009-08-24 JP JP2010525727A patent/JP5202636B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09160355A (ja) * | 1995-12-07 | 1997-06-20 | Nippon Zeon Co Ltd | 帯電ロール |
JP2000343622A (ja) * | 1999-06-09 | 2000-12-12 | Kanegafuchi Chem Ind Co Ltd | 被覆層を有するゴムローラの製造方法 |
JP2006184895A (ja) * | 2004-12-02 | 2006-07-13 | Bridgestone Corp | 導電性ローラの製造方法 |
JP2007233367A (ja) * | 2006-02-02 | 2007-09-13 | Bridgestone Corp | 導電性弾性ローラ及びそれを備えた画像形成装置 |
JP2007232861A (ja) * | 2006-02-28 | 2007-09-13 | Canon Inc | 導電性ローラ |
JP2007248945A (ja) * | 2006-03-17 | 2007-09-27 | Bridgestone Corp | 導電性ローラ及びそれを備えた画像形成装置 |
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US20110206414A1 (en) | 2011-08-25 |
KR20110044916A (ko) | 2011-05-02 |
JPWO2010021401A1 (ja) | 2012-01-26 |
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