EP2863268B1 - Entwicklungsvorrichtung, Klingeneinheit und Entwicklungsvorrichtungsherstellungsverfahren - Google Patents
Entwicklungsvorrichtung, Klingeneinheit und Entwicklungsvorrichtungsherstellungsverfahren Download PDFInfo
- Publication number
- EP2863268B1 EP2863268B1 EP14186524.6A EP14186524A EP2863268B1 EP 2863268 B1 EP2863268 B1 EP 2863268B1 EP 14186524 A EP14186524 A EP 14186524A EP 2863268 B1 EP2863268 B1 EP 2863268B1
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- EP
- European Patent Office
- Prior art keywords
- blade
- dimension
- laser beam
- weld mark
- longitudinal direction
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000003466 welding Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 14
- 239000007769 metal material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000005028 tinplate Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
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- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- G03G15/0812—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 regulating means, e.g. structure of doctor blade
Definitions
- aspects disclosed herein relate to a blade unit in which a blade is joined to a supporting member by welding, a developing device using the blade unit, and a manufacturing method of the developing device.
- the welding head is operated to weld the workpieces while the welding head and the workpieces are moved relative to one another during welding thereby to produce a weld of a predetermined shape in dependence on the predicted failure mode of the weld.
- an electrophotographic image forming apparatus that includes a developing device including a developing roller and a blade unit for regulating a thickness of a developer layer held on the developing roller. Further, there has been known a blade unit that includes a blade that contacts the developing roller and a supporting member that holds the blade in an overlapping manner.
- the blade and the holding member are welded to each other at a plurality of locations in a longitudinal direction of the blade, and the blade may be formed with a plurality of spot-like weld marks thereon.
- each of the welded portions formed by welding might not have a fixing strength that is strong enough, and therefore, there may be a risk that the blade cannot be fixed to the supporting member securely.
- the blade may be fixed to the supporting member more securely as compared with a case where spot-like weld marks are formed.
- a developing device 1 may comprise mainly a developing roller 2 as an example of a developer carrier, a supply roller 3, a blade unit 4, and a developing case 5 that may hold these components.
- the developing case 5 may be a container having therein a toner storage chamber 53 capable of storing toner therein, and may have an opening 51 defined in its one surface.
- the developing case 5 may define an edge of the opening 51 and comprise a blade support surface 52 to which the blade unit 4 may be fixed.
- a conveyor member 7 for conveying toner toward the supply roller 3 may be disposed in the toner storage chamber 53.
- the conveyor member 7 may comprise a shaft portion 71 that may be rotatably supported by the developing case 5, and a film 72 that may rotate on the shaft portion 71 by rotation of the shaft portion 71.
- the developing roller 2 may comprise a cylindrical roller body 2A and a shaft 2B that may be inserted into the roller body 2A and may be rotatable integrally with the roller body 2A.
- the roller body 2A may have elasticity and may be capable of holding toner on its circumferential surface.
- the developing roller 2 may be disposed to close the opening 51 of the developing case 5.
- the shaft 2B that may protrude from the roller body 2A in an axial direction of the developing roller 2 may be rotatably supported by the developing case 5.
- the supply roller 3 may be disposed inside the developing case 5 with contacting the developing roller 2, and may be rotatably supported by the developing case 5.
- the supply roller 3 may be configured to supply toner stored in the developing case 5 to the developing roller 2 by its rotation.
- the blade unit 4 may comprise a blade 41 and a supporting member 42, as an example of a supporter.
- the blade 41 may be disposed near the developing roller 2 such that a tip of the blade 41 may be placed on the developing roller 2.
- the supporting member 42 may hold the blade 41.
- the blade 41 may comprise a sheet metal having a rectangular shape elongated in a direction that an axis of the developing roller 2 may extend. That is, a longitudinal direction of the blade 41 is parallel to the axial direction of the developing roller 2, and a direction perpendicular to the longitudinal direction of the blade 41 is perpendicular to the axial direction of the developing roller 2.
- the blade 41 may be made of metallic material, for example, stainless steel. In other embodiments, for example, the blade 41 may comprise a sheet metal whose surface may have coating including press oil.
- the blade 41 may have a thickness of 0.05 to 2.5 mm, a thickness of 0.05 to 0.12 mm, a thickness of 0.05 to 1.00 mm, a thickness of 0.07 to 0.15 mm, or a thickness of 0.08 to 0.12 mm.
- a dimension of the blade 41 in the longitudinal direction may be greater than a dimension of the roller body 2A of the developing roller 2 in the axial direction, and for example, the blade may have a length of 218 to 270 mm, a length of 220 to 260 mm, or a length of 222 to 250 mm.
- the blade 41 may comprise a contact portion 411, which may protrude toward the developing roller 2 and directly contact the roller body 2A of the developing roller 2, on a distal end 41E of its surface 41F, facing the developing roller 2, of the blade 41 (see Fig. 2 ).
- the contact portion 411 may be made of, for example, rubber and may extend along the longitudinal direction of the blade 41.
- the supporting member 42 may be a member for defining a fixing end of the blade 41 as well as holding the blade 41.
- the supporting member 42 may be made of metallic material, for example, electrolytic zinc-coated carbon steel sheet.
- the supporting member 42 may have a thickness greater than the blade 41 and a substantially rectangular shape elongated in the longitudinal direction of the blade 41.
- the supporting member 42 may extend so as to exceed both ends 413 of the blade 41 in the longitudinal direction of the blade 41.
- the supporting member 42 may overlap the other surface of the blade 41 and pinch the blade 41 in conjunction with the blade support surface 52 of the developing case 5 such that the blade 41 is interposed therebetween.
- the other surface of the blade 41 may be opposite to the surface 4 IF on which the contact portion 411 of the blade 41 may be disposed. More specifically, the blade 41 may be pinched between an edge 42E of the supporting member 42 and an edge 52E of the support surface 52, wherein the edge 42E of the supporting member 42 and the edge 52E of the support surface 52 may be located on the distal end 41E side of the blade 41.
- a portion, which may contact the edge 42E of the supporting member 42 and the edge 52E of the blade support surface 52, of the blade 41 may function as a fulcrum when the blade 41 bends.
- the blade unit 4 configured as described above may be fixed to the developing case 5 using screws 6 through holes H in the blade 41 and the supporting member 42. In this state, the blade unit 4 may be configured to regulate a thickness of a toner layer held on the developing roller 2 by the contact portion 411 that may contact the rotating developing roller 2.
- the supporting member 42 may comprise a positioning protrusion 421, which may be engaged with the blade 41, at each end portion in the longitudinal direction on its surface that may face the blade 41.
- the blade 41 may have a pair of openings 412 that may be engaged with the pair of positioning protrusions 421.
- One of the pair of openings 412 may be a circular opening and the other of the pair of openings 412 may be an elongated opening.
- the elongated opening of the pair of openings 412 may absorb a dimensional deviation between the two openings 412 and linear expansion of the blade 41 and the supporting member 42 in the longitudinal direction.
- the blade 41 may be positioned with respect to the supporting member 42 by the engagement of the openings 412 and the corresponding positioning protrusions 421, respectively.
- the blade 41 may be welded to the supporting member 42 at a plurality of locations in the longitudinal direction. More specifically, the blade 41 may be joined to the supporting member 42 by laser welding at each portion of the blade 41 outward than each positioning protrusion 421 in the longitudinal direction and a portion of the blade 41 between the positioning protrusions 421 in the longitudinal direction.
- the blade 41 may have a first weld mark 43, as an example of a weld mark, which may join the blade 41 and the supporting member 42 at a position between the positioning protrusions 421, and second weld marks 44, as another example of the weld mark, which may join the blade 41 and the supporting member 42 at respective positions more outward than the respective positioning protrusions 421 in the longitudinal direction.
- first weld mark 43 as an example of a weld mark
- second weld marks 44 as another example of the weld mark, which may join the blade 41 and the supporting member 42 at respective positions more outward than the respective positioning protrusions 421 in the longitudinal direction.
- the first weld mark 43 may continue from a vicinity of the one of the openings 412 to a vicinity of the other of the openings 412 along the longitudinal direction of the blade 41.
- a dimension W1 in the longitudinal direction of the blade 41 may be longer than a dimension W2 in the direction perpendicular to the longitudinal direction of the blade 41 (e.g., a direction perpendicular to the first direction).
- the dimension W1 in the longitudinal direction of the blade 41 may be 1.1 times or greater, more preferably, 1.5 times or greater, and further preferably, 2.0 times or greater, as long as the dimension W2 in the direction perpendicular to the longitudinal direction of the blade 41.
- the dimension W1 of the first weld mark 43 in the longitudinal direction of the blade 41 may be longer enough than the dimension W2 of the first weld mark 43 in the direction perpendicular to the longitudinal direction of the blade 41.
- the dimension W1 of the first weld mark 43 in the longitudinal direction of the blade 41 may be within a range of 1.1 to 3.0 times, a range of 1.1 to 2.1 times, or a range of 1.5 to 3.5 times, as long as the dimension W2 of the first weld mark 43 in the direction perpendicular to the longitudinal direction of the blade 41.
- the first weld mark 43 may have a dimension of 210 to 250 mm in the longitudinal direction of the blade 41 and a dimension of 0.1 to 0.6 mm in the direction perpendicular to the longitudinal direction of the blade 41.
- the second weld mark 44 may continue from respective vicinities of the openings 412 to respective vicinities of the ends 413 of the blade 41 along the longitudinal direction of the blade 41.
- each second weld mark 44 may have a greater dimension in the longitudinal direction of the blade 41 than a dimension in the direction perpendicular to the longitudinal direction of the blade 41.
- Each of the first weld mark 43 and the second weld marks 44 may have a dimension of 0.2 to 250 mm in the longitudinal direction of the blade 41 and a dimension of 0.1 to 6.0 mm in the direction perpendicular to the longitudinal direction of the blade 41.
- Each of the first weld mark 43 and the second weld mark may have a dimension of 0.1 to 0.4 mm or a dimension of 0.1 to 0.3 mm in the direction perpendicular to the longitudinal direction of the blade 41.
- Each of the first weld mark 43 and the second weld marks 44 formed on the blade 41 may have the greater dimension in the longitudinal direction of the blade 41 than the dimension in the direction perpendicular to the longitudinal direction of the blade 41. Therefore, the blade 41 may be fixed to the supporting member 42 more securely as compared with a case where spot-like weld marks are formed on the blade 41.
- first weld mark 43 and the second weld marks 44 may be elongated along the longitudinal direction of the blade 41. Therefore, this configuration may reduce a risk that the blade 41 may come apart from the developing roller 2 due to application of a strong force to a particular portion of the blade 41 when the blade 41 is made contact with the developing roller 2.
- the blade 41 When the blade unit 4 is assembled for manufacturing the developing device 1, first, as depicted in Fig. 4A , the blade 41 may be placed on the supporting member 42 (e.g., a preparation process). At that time, the openings 412 in the blade 41 may be engaged with the corresponding positioning protrusions 421, respectively, of the supporting member 42.
- the supporting member 42 e.g., a preparation process.
- the blade 41 and the supporting member 42 may be fastened on a worktable. Thereafter, as depicted in Fig. 4B , while a laser beam 81 irradiated from the welding machine 8 is moved with respect to the blade 41, the laser beam 81 may be irradiated on the blade 41 to weld the blade 41 and the supporting member 42 to each other (e.g., a welding process).
- the welding machine 8 may be configured to irradiate a portion, which may face the welding machine 8, of an object with a continuous wave laser as the laser beam 81.
- another welding machine that may be configured to irradiate the blade 41 with a laser beam by moving a reflector provided inside the welding machine, without moving the welding machine itself, may be used.
- a fiber laser may be adopted as the continuous wave laser.
- a weld mark (e.g., the first weld mark 43 and the second weld marks 44) having a greater dimension in the longitudinal direction of the blade 41 than a dimension in the direction perpendicular to the longitudinal direction of the blade 41 may be formed on the blade 41.
- the laser beam 81 may be moved with respect to the blade 41 along the longitudinal direction of the blade 41 from one end portion, in which the circular opening 412 may be defined, to the other end portion, in which the elongated opening 412 may be defined, of the blade 41.
- the laser beam 81 may be irradiated to each portion that may be apart from each end of the blade 41 and the edges of the openings 412.
- Welding starting from the circular opening 412 side as described above may allow the elongated opening 412 to absorb a thermal expansion of the blade 41 that may occur during welding.
- Fig. 5 illustrates a weld mark formed by the welding process using a blade made of stainless steel (e.g., a thickness of 0.1 mm) as the blade 41, a supporting member made of electrolytic zinc-coated carbon steel sheet (e.g., a thickness of 1.2 mm) as the supporting member 42, and a fiber laser welding machine ML-6700A (manufactured by MIYACHI CORPORATION) as the welding machine.
- a continuous wave laser was used as a laser beam, and the laser beam was moved at a speed of 200 mm/sec with respect to the blade, where a spot diameter of the laser beam was 0.2 mm, and power of the laser beam was 300 W.
- the weld mark was observed by a laser microscope VK-X200 series (manufactured by KEYENCE CORPORATION).
- the blade 41 and the supporting member 42 may be welded to each other by moving the laser beam 82 with respect to the blade 41 while the laser beam 81 is continuously irradiated on the blade 41.
- the welding method of the blade 41 and the supporting member 42 might not be limited to the specific embodiment.
- the blade 41 and the supporting member 42 may be welded to each other by moving the laser beam 82 with respect to the blade 42 while the laser beam 81 is intermittently irradiated on the blade 41.
- the blade 41 may have a large weld mark 45 at a plurality of locations in the longitudinal direction, wherein each large weld mark 45 may include a plurality of weld marks 45A arranged in the longitudinal direction.
- a weld mark 45A may refer to a weld that may be formed by one laser irradiation.
- Each weld mark 45 A may have a circular shape. In the large weld mark 45, adjacent weld marks 45A may overlap each other. Thus, in the large weld mark 45, a dimension W3 in the longer-side of the blade 41 may be longer than a dimension W4 in the shorter-side of the blade 41.
- the laser beam 81 such as a pulsed laser or a continuous wave laser
- the laser beam 81 may be moved with respect to the blade 41 at a speed which may allow to form adjacent weld marks 45A may overlap each other.
- a fiber laser or an yttrium aluminum garnet (“YAG”) laser may be adopted as the pulsed laser.
- Fig. 7 illustrates a weld mark formed on a blade as a result of welding in which a laser beam such as a pulsed laser was moved at a speed of 200 mm/sec with respect to the blade, where a spot diameter of the laser beam was 0.2 mm, a pulse width of the laser beam was 1.0 msec, and power of the laser beam was 400 W.
- the welding machine, the blade, and the supporting member may be the same as those used in the example depicted in Fig. 5 .
- the weld mark was observed by the VK-X200 series laser microscope (manufactured by KEYENCE CORPORATION).
- Fig. 8 illustrates another example in which a plurality of weld marks that are elongated in the longitudinal direction of the blade 41 are arranged along the longitudinal direction.
- the weld marks illustrated in Fig. 8 may be formed as a result of welding in which a laser beam such as a continuous wave laser was moved at a speed of 200 mm/sec with respect to the blade, where a spot diameter of the laser beam was 0.1 mm, a pulse width of the laser beam was 14 msec, and power of the laser beam was 200 W.
- the welding machine, the blade, and the supporting member may be the same as those used in the example depicted in Fig. 5 .
- the weld marks were observed by the VR-3000 series One-Shot measuring microscope (manufactured by KEYENCE CORPORATION).
- the weld marks may be formed at one location in the direction perpendicular to the longitudinal direction of the blade 41. Nevertheless, the number of locations where the weld marks may be formed might not be limited to the specific embodiment. In other embodiments, for example, two or more weld marks may be formed at respective positions in the direction perpendicular to the longitudinal direction of the blade 41 so as to be arranged along the direction perpendicular to the longitudinal direction of the blade 41.
- all the weld marks may have the greater dimension in the longitudinal direction of the blade 41 than the dimension in the direction perpendicular to the longitudinal direction of the blade 41.
- the shape of the weld marks formed on the blade 41 might not be limited to the specific embodiment.
- the second weld mark 44 may have a spot-like shape in which a dimension in the longitudinal direction of the blade 41 and a dimension in the direction perpendicular to the longitudinal direction of the blade 41 may be substantially equal to each other. That is, only one of the weld marks formed on the blade 41 may have a greater dimension in the first direction than a dimension in a direction perpendicular to the first direction.
- the blade 41 may be welded to the supporting member 42 at the plurality of locations. Nevertheless, the method of welding the blade 41 might not be limited to the specific embodiment. In other embodiments, for example, the blade 41 may have the first weld mark 43 and be joined to the supporting member 42 by welding at one location.
- the laser beam 81 may be moved with respect to the blade 41.
- the manner of moving the laser beam 81 with respect to the blade 41 might not be limited to the specific embodiment.
- the blade 41 and the supporting member 42 may be moved with respect to the laser beam 81 to move the laser beam 81 with respect to the blade 41 (or the blade 41 may be moved with respect to the laser beam 81).
- the laser beam 81 and the set of the blade 41 and the supporting member 42 may be moved at the same time.
- the blade 41 may comprise the contact portion 411 protruding from the blade 41.
- the configuration of the blade 41 might not be limited to the specific embodiment.
- the blade 41A might not comprise a contact portion made of, for example, rubber, but may comprise a bent portion 411A in which the distal end portion of the blade 41A may be bent toward the supporting member 42 (e.g., toward a side opposite to the developing roller 2).
- the bent portion 411A (e.g., the distal end of the blade 41) may directly contact the roller body 2A of the developing roller 2.
- the distal end portion of the blade 41 may be placed on the developing roller 2, and the blade 41 may be pinched by the supporting member 42 and the developing case 5.
- the configuration of the blade unit 4 might not be limited to the specific embodiment.
- the supporting member 42 to which the blade 41 may be welded may be fixed to the developing case 5 directly while the supporting member 42 is pinched by the blade 41 and the developing case 5.
- the distal end portion of the blade 41 e.g., the contact portion 411
- the surface, which may be opposite to the surface 41F having the contact portion 411 thereon, of the blade 41 may be supported by the supporting member 42.
- the developing roller 2 comprising the roller body 2A and the shaft 2B may be illustrated as the developer carrier.
- the developer carrier might not be limited to the specific embodiment.
- a brush roller, a developing sleeve, or a belt-shaped developer carrier may be adopted as the developer carrier.
- the contact portion 411 (e.g., the distal end) of the blade 41 may be in directly contact with the roller body 2A of the developing roller 2 (as an example of the developer carrier).
- the configuration of the blade might not be limited to the specific embodiment. In other embodiments, for example, the blade may be disposed such that its distal end portion may be substantially 0.1-1.0 mm apart from the roller body 2A.
- the stainless steel may be adopted as the metallic material for constituting the blade 41.
- the material of the blade 41 might not be limited to the specific embodiment.
- the blade 41 may be made of, for example, steel for springs, phosphor bronze, beryllium copper, or carbon tool steel.
- a nickel, chromium, or zinc coating may be applied to the blade 41 for rustproof.
- the electrolytic zinc-coated carbon steel sheet may be adopted as the metallic material for constituting the supporting member 42. Nevertheless, the configuration of the supporting member 42 might not be limited to the specific embodiment.
- the supporting member 42 may be made of a cold rolled steel plate or a tinplate, or a plate made of one of the cold rolled steel plate and the tinplate whose surface may be applied with treatment such as Parkerizing, chromating, or nickel coating.
- the supporting member 42 may also have a coating including press oil thereon.
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- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Laser Beam Processing (AREA)
Claims (8)
- Rakeleinheit zum Regulieren einer Dicke einer Entwicklerschicht, die auf einer Entwicklungswalze gehalten wird, wobei die Rakeleinheit (4) aufweist:eine Rakel (41); mit einer Längsrichtung, die parallel ist zur axialen Richtung der Entwicklungswalze;einen Träger (42), der die Rakel (41) trägt,wobei die Rakel (41) eine Schweißmarkierung (43) aufweist, die an den Träger (42) angefügt ist,dadurch gekennzeichnet, dass eine Abmessung der Schweißmarkierung (43) in einer ersten Richtung größer ist als eine Abmessung der Schweißmarkierung in einer zweiten Richtung, die senkrecht ist zur ersten Richtung, unddie erste Richtung parallel ist zur Längsrichtung der Rakel (42).
- Rakeleinheit nach Anspruch 1, wobei die Abmessung der Schweißmarkierung (43) in der ersten Richtung mindestens 1,1-mal so lang ist wie die Abmessung der Schweißmarkierung (43) in der zweiten Richtung.
- Rakeleinheit nach Anspruch 1 oder 2, wobei die Rakel (41) aus metallischem Material besteht und der Träger (42) aus metallischem Material besteht.
- Entwicklungsvorrichtung, aufweisend:die Rakeleinheit (4) nach einem der Ansprüche 1 bis 3; undeine Entwicklungswalze (2);wobei die Rakel (41) angrenzend an die Entwicklungswalze (2) angeordnet ist.
- Herstellungsverfahren für eine Entwicklungsvorrichtung, die aufweist: eine Entwicklungswalze (2), eine Rakel (41), die angrenzend an die Entwicklungswalze (2) angeordnet ist, wobei eine Längsrichtung der Rakel parallel ist zur axialen Richtung der Entwicklungswalze, und einen Träger (42), der die Rakel (41) trägt, wobei das Verfahren umfasst.
Platzieren der Rakel (41) auf dem Träger (42); und
Schweißen, was beinhaltet: Ausstrahlen eines Laserstrahls (81) aus einer Schweißmaschine, während vom Laserstrahl (81), der aus der Schweißmaschine ausgestrahlt wird, und der Rakel (41) mindestens eines relativ zum jeweils anderen vom Laserstrahl (81) und der Rakel (41) bewegt wird, und Ausbilden einer Schweißmarkierung (43), die an den Träger (42) angefügt ist,
dadurch gekennzeichnet, dass eine Abmessung der Schweißmarkierung (43) in einer ersten Richtung größer ist als eine Abmessung der Schweißmarkierung (43) in einer zweiten Richtung, die senkrecht ist zur ersten Richtung, und
die erste Richtung parallel ist zur Längsrichtung der Rakel (41). - Herstellungsverfahren nach Anspruch 5, wobei das Schweißen das Ausstrahlen eines Laserstrahls (81) auf solche Weise beinhaltet, dass die Abmessung der Schweißmarkierung (43) in der ersten Richtung mindestens 1,1-mal so lang ist wie die Abmessung der Schweißmarkierung (43) in der zweiten Richtung.
- Herstellungsverfahren nach Anspruch 5 oder 6, wobei das Schweißen beinhaltet: Ausstrahlen eines Pulslasers und Bewegen von mindestens einem vom Laserstrahl (81) und der Rakel (41) in Bezug auf das jeweils andere vom Laserstrahl (81) und der Rakel (41) in der ersten Richtung mit einer Geschwindigkeit, die es ermöglicht, dass aneinander angrenzende Schweißmarkierungen einander überlagern.
- Herstellungsverfahren nach Anspruch 5 oder 6, wobei das Schweißen beinhaltet: Ausstrahlen eines Dauerstrichlasers und Bewegen von mindestens einem vom Laserstrahls (81) und der Rakel (41) in Bezug auf das jeweils andere vom Laserstrahl (81) und der Rakel (41) in der ersten Richtung.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013205680A JP6268884B2 (ja) | 2013-09-30 | 2013-09-30 | 現像装置、ブレードユニット、および、現像装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
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EP2863268A1 EP2863268A1 (de) | 2015-04-22 |
EP2863268B1 true EP2863268B1 (de) | 2018-09-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14186524.6A Active EP2863268B1 (de) | 2013-09-30 | 2014-09-26 | Entwicklungsvorrichtung, Klingeneinheit und Entwicklungsvorrichtungsherstellungsverfahren |
Country Status (3)
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EP (1) | EP2863268B1 (de) |
JP (1) | JP6268884B2 (de) |
CN (1) | CN104516242A (de) |
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JP6221906B2 (ja) * | 2014-03-31 | 2017-11-01 | ブラザー工業株式会社 | 現像装置および現像装置の製造方法 |
EP3454134A1 (de) * | 2017-09-07 | 2019-03-13 | Canon Kabushiki Kaisha | Entwicklungsvorrichtung |
JP7516044B2 (ja) | 2019-12-27 | 2024-07-16 | キヤノン株式会社 | 現像装置 |
CN116235026B (zh) | 2020-11-18 | 2024-09-20 | 鲁姆斯有限公司 | 基于光学的系统 |
JP7324392B1 (ja) * | 2022-06-07 | 2023-08-10 | 株式会社日本ピット | ステンレス鋼板と亜鉛鍍金鋼板との面溶接構造 |
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JP3135911B2 (ja) * | 1990-10-20 | 2001-02-19 | 大豊工業株式会社 | 金属ガスケットの製造方法 |
JPH06188062A (ja) * | 1992-12-17 | 1994-07-08 | Ngk Spark Plug Co Ltd | スパークプラグ用電極 |
GB9820879D0 (en) * | 1998-09-26 | 1998-11-18 | Univ Coventry | Welding |
US6535709B2 (en) * | 2000-04-13 | 2003-03-18 | Canon Kabushiki Kaisha | Developing apparatus featuring an end of a regulating member coupled to a supporting member of the apparatus, regulating member, and method for assembling the same |
JP4192533B2 (ja) * | 2002-08-28 | 2008-12-10 | セイコーエプソン株式会社 | 現像剤帯電ユニット、現像装置、画像形成装置、及び、コンピュータシステム |
US6937835B2 (en) * | 2002-08-28 | 2005-08-30 | Seiko Epson Corporation | Developer charging unit, developing device, image-forming apparatus, and computer system |
JP2005121763A (ja) * | 2003-10-15 | 2005-05-12 | Canon Inc | 現像装置および現像装置組立方法 |
JP2007136525A (ja) * | 2005-11-21 | 2007-06-07 | Kobe Steel Ltd | 異材接合方法 |
JP2008241814A (ja) * | 2007-03-26 | 2008-10-09 | Konica Minolta Business Technologies Inc | 現像カートリッジ |
JP5155598B2 (ja) * | 2007-05-22 | 2013-03-06 | トヨタ自動車株式会社 | 重ねレーザ溶接方法および装置 |
JP2010094702A (ja) * | 2008-10-15 | 2010-04-30 | Toa Kogyo Kk | 金属メッキ板のレーザー溶接方法 |
US9500994B2 (en) * | 2011-12-30 | 2016-11-22 | Lexmark International, Inc. | Developer unit architecture for an imaging device |
JP2015069165A (ja) * | 2013-09-30 | 2015-04-13 | ブラザー工業株式会社 | 現像装置、ブレードユニット、および、現像装置の製造方法 |
JP2015069166A (ja) * | 2013-09-30 | 2015-04-13 | ブラザー工業株式会社 | 現像装置、ブレードユニット、および、現像装置の製造方法 |
JP6221906B2 (ja) * | 2014-03-31 | 2017-11-01 | ブラザー工業株式会社 | 現像装置および現像装置の製造方法 |
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JP2015069167A (ja) | 2015-04-13 |
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JP6268884B2 (ja) | 2018-01-31 |
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