US3759220A - Cleaning device in electrophotography - Google Patents

Cleaning device in electrophotography Download PDF

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Publication number
US3759220A
US3759220A US00194956A US3759220DA US3759220A US 3759220 A US3759220 A US 3759220A US 00194956 A US00194956 A US 00194956A US 3759220D A US3759220D A US 3759220DA US 3759220 A US3759220 A US 3759220A
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US
United States
Prior art keywords
blade
photosensitive medium
cleaning
liquid
cleaning blade
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.)
Expired - Lifetime
Application number
US00194956A
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English (en)
Inventor
T Saito
T Iida
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Canon Inc
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Canon Inc
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Filing date
Publication date
Priority claimed from JP10936370U external-priority patent/JPS4920851Y1/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of US3759220A publication Critical patent/US3759220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0088—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge removing liquid developer

Definitions

  • ABSTRACT A cleaning device for an electrophotographic copying apparatus comprising a photosensitive medium having liquid collection grooves formed at the opposite end portions thereof, and a cleaning blade of resilient material having an edge adapted to bear against the surface of the photosensitive medium.
  • the cleaning blade has projections formed at the opposite ends thereof so that when the blade is brought to its cleaning position, the inner side walls of the projections thereof may keep liquid-tight contact with the inner side walls of the liquid collection grooves.
  • the cleaning system of this type has often encountered a serious problem that part of the developing liquid collected near the opposite ends of the cleaning blade may flow around these ends and leak to the surface area of the photosensitive medium which is located behindthe cleaning blade. If a subsequent electrophotographic process proceeds with such leaking liquid still left on the surface of the photosensitive medium, no sufficient cleaning effect could be attained and stains or blots would be formed in the next image reproduction. In addition, the insulating characteristic of the surface of the photosensitive medium would be seriously reduced to attenuate electric charge and destroy the electrostatic latent image on the surface of the photosensitive medium, thus adversely affecting the resulting image formation.
  • An object of the present invention' is to eliminate the above-described troubles by employing a cleaning blade of resilient material formed with projections at the opposite ends thereof, and a photosensitive medium formed with liquid collection grooves adjacent to the opposite ends thereof.
  • the cleaning blade is installed in such a manner that the projections are received in the liquid collection grooves of the photosensitive medium with the inner side walls of the projections kept in close or liquid-tight contact with the inner side walls of the grooves.
  • the residual developing liquid on the photosensitive medium after image transfer may sometimes be solidified due to a low content of carrier liquid therein. Also, some of the developing liquid may remain unremoved in or adjacent to the area of contact between the photosensitive medium and the cleaning blade and solidfy due to evaporation of the carrier liquid when the copying apparatus is not in operation.
  • Such solidified developer i.e., solidified toner, which intervenes between the blade and the photosensitive medium, tends to injure the surface of the photosensitive medium once a subsequent copying cycle is entered. This tendency is especially conspicuous at the beginning of the daily use of the copying apparatus.
  • Means for retracting the cleaning blade away from the surface of the photosensitive medium and maintaining it wet with the carrier liquid may be of two alternative types, i.e., horizon tal movement type and rotational movement type.
  • FIG. 1 schematically shows an electrophotographic copying apparatus of the liquid development and transfer type in which the cleaning device of the present invention is incorporated.
  • FIG. 2 is a perspective view of an embodiment of the photosensitive medium according to the present invention with the conventional cleaning blade applied thereto.
  • FIG. 3 shows an improved cleaning blade according to the present invention.
  • FIG. 4 is a perspective view of a photosensitive medium with the cleaning blade of FIG. 3 applied thereto.
  • FIG. 5 is a fragmentary perspective view showing another embodiment of the present invention.
  • FIGS. 6 and 7 are a cross-sectional view and a plan view, respectively, of an embodiment of the cleaning device in which the cleaning blade is rotatable to move into a carrier liquid reservoir.
  • FIGS. 8 and 9 show further embodiments of the present invention.
  • the cleaning blade used with the copying apparatus as shown in FIG. 1 may preferably take the form as shown in FIG. 3, instead of the conventional form shown in FIG. 2.
  • FIG. 1 which shows a drum type electrophotographic copying machine including a drum type photosensitive medium 1 rotatable in the direction of arrow, primary charger 13, AC (or DC) corona discharger 14, light image exposure means 15, whole surface exposure means 17, liquid type developing means 116, post charger l8 and transfer means 21 and so on are arranged.
  • the liquid type developing means 16 is shown, together with a blade type cleaning means 26.
  • the developing liquid in a tank 12 may be utilized as cleaning liquid.
  • a drive source 8 is energized to supply the developing liquid from the tank and centrifugal pump 11 or the like through distributor means 9 into a pipe terminating at a spray conduit 10, through which the developing liquid is applied to blade means 26 and to the surface of the photosensitive medium.
  • the conventional blade means comprises a blade 24, as shown in FIG. 2.
  • a part of the developing liquid collected near the opposite ends of the cleaning blade may flow around these ends and leak to the surface area of the photosensitive medium which is located behind the cleaning blade, which causes stains or blots in the next image reproduction.
  • the cleaning blade 2 shown in FIG. 3 is formed of resilient material and has projections 2' formed at the opposite ends thereof.
  • FIG. 5 shows an alternative form of the cleaning blade according to the present invention.
  • the cleaning blade 2 has no integral projection 2' but instead, employs separate guide members 7, only one of which is shown.
  • the guide members 7 may be disposed at each end of the cleaning blade 2 in such a manner as to kee close contact with the surface of the blade 2 and with the inner side wall of the collection groove 3.
  • the developing liquid may be interrupted by the cleaning blade.2 and directed into the collection grooves 3 formed at the opposite ends of the photosensitive drum 1, whereby the developing liquid remaining on the surface of the photosensitive medium may be completely prevented from flowing past the blade to the surface area of the photosensitive medium which is located behind the cleaning blade.
  • FIGS. 6 and 7 show a device of the type in which the cleaning blade described above is maintained wet in a carrier liquid reservoir during the suspension of the cleaning operation.
  • the cleaning blade used in this device is of the type which is rotatable to move between the photosensitive medium and the carrier liquid reservoir.
  • the photosensitive medium 1 is formed with developing liquid collection grooves 3 similar to those shown in FIGS. 4 and 5, and the blade 2 is formed of rubber such as NBR or the like having a high oil-resistivity.
  • the blade 2 is supported by a blade holder 25 attached to a torque tube 28.
  • the torque tube 28 is rotatably mounted on a shaft 30 which extends between and is secured to a frame 29.
  • the torque tube 28 carries a pulley 31 at one end thereof.
  • a spiral spring 32 is provided between the shaft 30 and the pulley 31 to bias the pulley 31, torque tube 28 and blade 2 in clockwise direction and thereby hold the blade 2 in the position as shown by imaginary lines in FIG. 6.
  • a wetting means is provided to prevent the blade 2 from drying up.
  • the wetting means comprises a reservoir 35 filled with a body of developer carrier liquid 34 such as kerosene and a supply tank 36 for supplying such liquid to maintain the liquid in the reservoir 35 at a constant level.
  • the supply tank 36 is interchangeable and may be of the chicken feed type.
  • the reservoir 35 is formed with an opening 37 through which the blade 2 may pass into the carrier liquid 34 in the reservoir 35.
  • a cover responsive to the movement of the blade 2 may be provided to close the opening 37 during a cleaning cycle.
  • a motor 38 is provided to drive the torque tube 28 and blade 2 via belt 39 and pulley 31. The motor may start in response to the closing of an unshown power switch of the copying apparatus and stop in response to a signal from an unshown microswitch.
  • electromagnets 40 which may be energized upon closing of the power switch of the copying apparatus to attract members 41 attached to the torque tube 28 when the blade 2 is brought to its cleaning position.
  • the power switch (not shown) of the copying apparatus is first closed to start the motor 38 and energize the electromagnets 40 at the same time.
  • the motor 38 drives the belt 39 and pulley 31 to rotate the torque tube 28 and blade 2 counter-clockwise about the shaft 30 against the force of the spiral spring 32 so that the free end of the blade 2 comes out of the carrier liquid 34 in the wetting means 33 to approach the surface of the photosensitive medium 1.
  • the energized electromagnets 40 attract the members 41 of the torque tube 28 so that the free end of the blade 2 resiliently bears against the surface of the photosensitive medium 1 to assume its cleaning position (FIGS. 6 and 7).
  • the microswitch is opened to stop the motor 38 and wind up the spiral spring 32.
  • the electromagnets 40 are deenergized to allow the blade 2 to be rotated clockwise by the return force of the spiral spring 32 until brought back to the opening 37 of the wetting means 33 and dipped in the carrier liquid therein. Thereupon, the microswitch is closed to enable the motor 38 to be energized at the initiation of the next copying cycle (see broken-line position in FIG. 6).
  • FIG. 8 shows another form of the mechanism for moving the cleaning blade in response to the closing of the power switch of the copying apparatus.
  • a slide switch 42 and a pulley 43 are connected by a wire 44.
  • a pulley 45 mounted on a shaft common with the pulley 43 via a pulley 46 to a pulley 47, there extends a further wire 48.
  • the pulley 47 is securely mounted on the torque tube 28 having the plate holder 25 attached thereto.
  • displacement of the switch 42 in the direction of arrow ON" may be utilized to rotate the blade 2 in the counterclockwise direction so as to assume its cleaning position for applying a predetermined cleaning pressure to the surface of the photosensitive medium with the aid of the return force of a spring (not shown) provided between the shaft 30 and the torque tube 28. Thereafter, upon completion of a copying cycle, the switch 42 may be moved in the direction of arrow OFF" to return the blade 2 into the wetting means 33, whereafter the blade 2 may be maintained in that position as by clip means (not shown).
  • lever switch instead of the slide switch, use may be made of any lever switch which can provide an amount of displacement. Also, means'for moving the blade 2 is not limited to the shown pulley-wire system but the principle of lever motion may be utilized for the same purpose.
  • FIG. 9 shows a further embodiment of the cleaning device in which the cleaning blade 2 is adapted for horizontal movement.
  • the blade 2 may be moved horizontally from its cleaning position (solid-line position) to a scraper plate 50 for removing material 49 such as toner, fixer, etc., sticking to the free end of the blade 2.
  • the blade 2 may rest on a pad 51 which is impregnated with carrier liquid 34, whereby the blade may be maintained wet with such liquid.
  • the reservoir 35 of the wetting means 33 has a carrier liquid supply port 52.
  • such mechanism may be provided as by connecting the blade holder 25 through a rack-pinioq system to a drive source which is operable in a manner similar to the motor 38 shown in FIGS. 6 and 7.
  • the cleaning blade is in contact with the surface of the photosensitive medium only during a cleaning cycle and, after completion of a copying cycle, the blade is separated from the surface of the photosensitive medium and maintained in wet condition so that any amount of toner and/or fixer sticking to the blade and existing between the blade and the surface of the photosensitive medium may be prevented from solidifying to injure the blade and/or the photosensitive medium during a subsequent operation.
  • a cleaning device for an electrophotographic apparatus including a photosensitive medium, comprising means defining liquid collection grooves at the opposite end portions of said photosensitive medium, and a cleaning blade of resilient material having an edge adapted to bear against the photosensitive medium, said cleaning blade having projections formed at the opposite ends thereof so that the inner side walls of said projections may keep liquid-tight contact with the inner side walls of said liquid collection grooves, whereby relative sliding movement between said blade and said photosensitive medium removes any amount of developing liquid remaining on said photosensitive medium after an image transfer has been done,
  • a cleaning device as defined in claim ll further comprising means for moving said cleaning blade from the surface of said photosensitive medium into a carrier liquid reservoir to maintain said blade in wet condition during the suspension of cleaning operation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
US00194956A 1970-11-04 1971-11-02 Cleaning device in electrophotography Expired - Lifetime US3759220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10936370U JPS4920851Y1 (enrdf_load_stackoverflow) 1970-11-04 1970-11-04
NL7118127A NL7118127A (enrdf_load_stackoverflow) 1970-11-04 1971-12-30

Publications (1)

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US3759220A true US3759220A (en) 1973-09-18

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US (1) US3759220A (enrdf_load_stackoverflow)
NL (1) NL7118127A (enrdf_load_stackoverflow)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918809A (en) * 1974-06-24 1975-11-11 Xerox Corp Apparatus for cleaning a surface support
US3977898A (en) * 1974-06-24 1976-08-31 Xerox Corporation Method for cleaning a support surface
FR2300360A1 (fr) * 1975-02-06 1976-09-03 Savin Business Machines Corp Dispositif de nettoyage du tambour ou element photo-conducteur d'un reproducteur electrostatique
US4010288A (en) * 1974-10-04 1977-03-01 Canon Kabushiki Kaisha Method of preventing evaporation of liquid on an image-bearing member
US4018524A (en) * 1974-12-29 1977-04-19 Ricoh Co., Ltd. Construction for use with an electrophotographic copying machine of wet developing type
US4043659A (en) * 1974-05-24 1977-08-23 Xerox Corporation Cleaning blade toner arrestor
FR2368740A1 (fr) * 1976-10-22 1978-05-19 Canon Kk Procede et appareil de formation d'images par un processus electrostatique
US4129072A (en) * 1976-01-26 1978-12-12 Canon Kabushiki Kaisha Electrostatic printing
US4158498A (en) * 1976-06-22 1979-06-19 Rank Xerox Limited Blade cleaning system for a reproducing apparatus
US4174172A (en) * 1976-12-17 1979-11-13 Xerox Corporation Cleaning methods and apparatus for a photocopying device
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
US4190464A (en) * 1971-06-03 1980-02-26 Canon Kabushiki Kaisha Method for cleaning a photoconductive surface with liquid toner
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process
US4278345A (en) * 1979-09-17 1981-07-14 Nashua Corporation Drum cleaning apparatus
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
FR2502355A1 (fr) * 1981-03-20 1982-09-24 Philips Nv Dispositif de nettoyage pour le support d'image intermediaire d'un dispositif d'impression electrophoretique
US4367035A (en) * 1980-04-21 1983-01-04 Savin Corporation Liquid developer electrostatic copier for shipboard use
WO1983001842A1 (en) * 1981-11-18 1983-05-26 Faucher, Jerome, R. Thermally isolated developer pump
US4439120A (en) * 1980-10-27 1984-03-27 Skega Ab Meshing cog-wheel injection unit with lateral sealing and scropers
US4449241A (en) * 1981-05-30 1984-05-15 Olympus Optical Company Limited Toner cleaning apparatus
US4485132A (en) * 1981-07-17 1984-11-27 Hitachi, Ltd. Method of continuous coating of metallic strip material
US4779119A (en) * 1986-12-11 1988-10-18 Kentek Information Systems, Inc. Grooved cleaning blade with end seals
US4890135A (en) * 1975-02-06 1989-12-26 Savin Corporation Photoconductive drum cleaning apparatus
US4933215A (en) * 1986-08-07 1990-06-12 Fuji Photo Film Co., Ltd. Method and apparatus for coating webs
US5385096A (en) * 1993-10-14 1995-01-31 Dai Nippon Printing Co., Ltd. Printing plate contaminant removing device for printing press
USD358416S (en) 1992-05-26 1995-05-16 Olympus Optical Co., Ltd. Cleaning pad for use in printers
EP0657787A1 (en) * 1993-12-07 1995-06-14 Hewlett-Packard Company Liquid electrophotography fluid containment and belt tracking device
US5854960A (en) * 1994-10-28 1998-12-29 Indigo N.V. Squeegee roller for imaging systems
US6104906A (en) * 1998-03-19 2000-08-15 Canon Kabushiki Kaisha Blade device and fixing apparatus having the same
EP1992417A3 (de) * 2007-05-14 2009-02-18 Grenzebach BSH GmbH Abführ- und Auffangvorrichtung für Überschußmaterial von Auftragswerken
US20090084311A1 (en) * 2007-09-28 2009-04-02 Junichi Yoshida Liquid application apparatus and inkjet recording apparatus
US20100124431A1 (en) * 2008-11-17 2010-05-20 Miyakoshi Printing Machinery Co., Ltd. Electrophotographic printer
US20130224383A1 (en) * 2012-02-28 2013-08-29 Toray Plastics (America), Inc. Gravure roll edge masking system for in-line film coating
US20150118389A1 (en) * 2013-10-30 2015-04-30 Samsung Sdi Co., Ltd. Apparatus and method for coating separator
US9925555B2 (en) * 2016-02-08 2018-03-27 Valmet Technologies, Inc. Folded sealing blade for a coating applicator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604199A (en) * 1947-10-10 1952-07-22 Govan William Arthur James Conveyer lubricator
US2889758A (en) * 1954-12-24 1959-06-09 Ibm Electrophotographic printer
US3368566A (en) * 1964-06-17 1968-02-13 Souren Z. Avediklan Filter cigarette
US3387585A (en) * 1967-03-21 1968-06-11 Farrell John Jerome Apparatus for metering a coated carrier
US3552850A (en) * 1968-02-01 1971-01-05 Xerox Corp Lubricated blade cleaning of imaging photoconductive members
US3667428A (en) * 1969-07-01 1972-06-06 Xerox Corp Developing systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604199A (en) * 1947-10-10 1952-07-22 Govan William Arthur James Conveyer lubricator
US2889758A (en) * 1954-12-24 1959-06-09 Ibm Electrophotographic printer
US3368566A (en) * 1964-06-17 1968-02-13 Souren Z. Avediklan Filter cigarette
US3387585A (en) * 1967-03-21 1968-06-11 Farrell John Jerome Apparatus for metering a coated carrier
US3552850A (en) * 1968-02-01 1971-01-05 Xerox Corp Lubricated blade cleaning of imaging photoconductive members
US3667428A (en) * 1969-07-01 1972-06-06 Xerox Corp Developing systems

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190464A (en) * 1971-06-03 1980-02-26 Canon Kabushiki Kaisha Method for cleaning a photoconductive surface with liquid toner
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process
US4043659A (en) * 1974-05-24 1977-08-23 Xerox Corporation Cleaning blade toner arrestor
US3977898A (en) * 1974-06-24 1976-08-31 Xerox Corporation Method for cleaning a support surface
US3918809A (en) * 1974-06-24 1975-11-11 Xerox Corp Apparatus for cleaning a surface support
US4010288A (en) * 1974-10-04 1977-03-01 Canon Kabushiki Kaisha Method of preventing evaporation of liquid on an image-bearing member
US4018524A (en) * 1974-12-29 1977-04-19 Ricoh Co., Ltd. Construction for use with an electrophotographic copying machine of wet developing type
FR2300360A1 (fr) * 1975-02-06 1976-09-03 Savin Business Machines Corp Dispositif de nettoyage du tambour ou element photo-conducteur d'un reproducteur electrostatique
US4890135A (en) * 1975-02-06 1989-12-26 Savin Corporation Photoconductive drum cleaning apparatus
US4129072A (en) * 1976-01-26 1978-12-12 Canon Kabushiki Kaisha Electrostatic printing
US4158498A (en) * 1976-06-22 1979-06-19 Rank Xerox Limited Blade cleaning system for a reproducing apparatus
FR2368740A1 (fr) * 1976-10-22 1978-05-19 Canon Kk Procede et appareil de formation d'images par un processus electrostatique
US4174172A (en) * 1976-12-17 1979-11-13 Xerox Corporation Cleaning methods and apparatus for a photocopying device
US4278345A (en) * 1979-09-17 1981-07-14 Nashua Corporation Drum cleaning apparatus
US4367035A (en) * 1980-04-21 1983-01-04 Savin Corporation Liquid developer electrostatic copier for shipboard use
US4439120A (en) * 1980-10-27 1984-03-27 Skega Ab Meshing cog-wheel injection unit with lateral sealing and scropers
FR2502355A1 (fr) * 1981-03-20 1982-09-24 Philips Nv Dispositif de nettoyage pour le support d'image intermediaire d'un dispositif d'impression electrophoretique
US4449241A (en) * 1981-05-30 1984-05-15 Olympus Optical Company Limited Toner cleaning apparatus
US4485132A (en) * 1981-07-17 1984-11-27 Hitachi, Ltd. Method of continuous coating of metallic strip material
WO1983001842A1 (en) * 1981-11-18 1983-05-26 Faucher, Jerome, R. Thermally isolated developer pump
US4933215A (en) * 1986-08-07 1990-06-12 Fuji Photo Film Co., Ltd. Method and apparatus for coating webs
US4779119A (en) * 1986-12-11 1988-10-18 Kentek Information Systems, Inc. Grooved cleaning blade with end seals
USD358416S (en) 1992-05-26 1995-05-16 Olympus Optical Co., Ltd. Cleaning pad for use in printers
US5385096A (en) * 1993-10-14 1995-01-31 Dai Nippon Printing Co., Ltd. Printing plate contaminant removing device for printing press
EP0657787A1 (en) * 1993-12-07 1995-06-14 Hewlett-Packard Company Liquid electrophotography fluid containment and belt tracking device
US5854960A (en) * 1994-10-28 1998-12-29 Indigo N.V. Squeegee roller for imaging systems
US6104906A (en) * 1998-03-19 2000-08-15 Canon Kabushiki Kaisha Blade device and fixing apparatus having the same
EP1992417A3 (de) * 2007-05-14 2009-02-18 Grenzebach BSH GmbH Abführ- und Auffangvorrichtung für Überschußmaterial von Auftragswerken
US20090084311A1 (en) * 2007-09-28 2009-04-02 Junichi Yoshida Liquid application apparatus and inkjet recording apparatus
US20100124431A1 (en) * 2008-11-17 2010-05-20 Miyakoshi Printing Machinery Co., Ltd. Electrophotographic printer
US8369767B2 (en) * 2008-11-17 2013-02-05 Miyakoshi Printing Machinery Co., Ltd. Electrophotographic printer
US20130224383A1 (en) * 2012-02-28 2013-08-29 Toray Plastics (America), Inc. Gravure roll edge masking system for in-line film coating
US9539605B2 (en) * 2012-02-28 2017-01-10 Toray Plastics (America), Inc. Gravure roll edge masking system for in-line film coating
US20150118389A1 (en) * 2013-10-30 2015-04-30 Samsung Sdi Co., Ltd. Apparatus and method for coating separator
US10195638B2 (en) * 2013-10-30 2019-02-05 Samsung Sdi Co., Ltd. Apparatus for coating a separator having collection chamber and method for coating the separator
US9925555B2 (en) * 2016-02-08 2018-03-27 Valmet Technologies, Inc. Folded sealing blade for a coating applicator

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Publication number Publication date
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