US3644953A - Sheet-cleaning apparatus - Google Patents

Sheet-cleaning apparatus Download PDF

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Publication number
US3644953A
US3644953A US44317A US3644953DA US3644953A US 3644953 A US3644953 A US 3644953A US 44317 A US44317 A US 44317A US 3644953D A US3644953D A US 3644953DA US 3644953 A US3644953 A US 3644953A
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US
United States
Prior art keywords
cloth
sheet
path
support
support members
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
US44317A
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English (en)
Inventor
Robert W Christiansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of US3644953A publication Critical patent/US3644953A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material

Definitions

  • ABSTRACT 52 us. (:1 ..1s/1.s 15/100 352/ An inexpensive manually operated device for thoroughly [5 H [nL Cl B68) 11/00 cleaning photographic film negatives.
  • the device includes two [58] Field 4 152, 153 pneumatically inflated cylinders that press two lengths of wip- 34 95, 9 100 68 244; 352 130 ing cloth into even and intimate contact with opposite surfaces 5 I 95 l l l of a negative passed between the lengths of cloth.
  • the device [56] References Cited blows ionized air across the negative after it is wiped clean to neutralize any static electrical charges present on the nega- UNITED STATES PATENTS five 3,128,492 4/1964 Hanscom et al.
  • This invention relates to the cleaning of sheet material and in one aspect to a cleaning apparatus for removing fine dust and other foreign materials from nonconductive sheet material such as photographic film materials which are to be printed.
  • photographic negatives comprise dielectric or nonconductive material, static electrical charges are easily developed on their surfaces during handling and these charges are not easily removed. Static electrical charges on a negative tend to attract dust from the ambient atmosphere or surrounding surfaces and this dust must be completely removed before printing, especially where enlargements are to be made, as any dust particles on the negative will show as an imperfection on the print.
  • This application also discloses a nuclear means for removing static electricalcharges from a cleaned plastic web, which comprises polonium enclosed in small ceramic particles attached to a bar to provide a safe source of alpha particle emission which may be disposed close to the web to ionize the air at the surface of the web.
  • the device of the copending application very effectively removes particles, even particles microns in size or smaller
  • the use of this device to clean manually moved negatives, as opposed to continuous webs for which it was designed, is impractical.
  • the disclosed device cannot be made compact enough to conveniently clean a manually moved negative in one pass.
  • the two cleaning heads required are not disposed opposite each other because a surface of the web to be cleaned must move toward the cleaning head disposed adjacent to it.
  • positioning two cleaning heads and an ionizing source to define a path for a negative, to be cleaned may cause the path to be longer than the negative itself, and manual movement of a negative through such a path becomes difficult.
  • the present invention provides an inexpensive, compact and easily used means for completely cleaning both sides of a negative manually passed between two sections of wiping cloth.
  • the present invention also provides a safe means for neutralizing static electrical charges on the negative so that the negative will not attract dust after it has been cleaned.
  • the present invention provides a cleaning apparatus for removal of dust and other foreign objects from a sheet material moved through the apparatus.
  • the apparatus includes a pair of inflatable support members having flexible semicylindrical walls positioned parallel to and in opposed relationship to each other to define opposed narrow support edges at a nip therebetween two lengths of soft lint free wiping cloth extending partially around and between the adjacent walls of the support members.
  • the opposed surfaces of the cloth positioned between the support edges of the support members define part of a path through which a sheet to be cleaned may be passed.
  • Pressure means are also provided which afford fluid pressure against the flexible walls for urging them toward each other to urge the opposed surfaces of the lengths of cloth toward each other with essentially an equal pressure distribution axially along the support edges when the walls and the lengths of cloth are separated from each other by the passage of a sheet therebetween.
  • the present invention also provides a manual means for changing the sections of wiping cloth positioned between the cylinders.
  • FIG. 1 is a top plan view of a negative-cleaning device constructed according to the present invention
  • FIG. 2 is an elevational front view partially in section taken generally along the line 22 of HG. 1.
  • the apparatus 10 comprises a base in the form of a pan ll having a lip 12 about its edge upon which is supported a plate 14 which comprises the main support member for the apparatus 10.
  • the pan II is a plastic molding, and is provided with a pair of handles 16 to provide ease of portability for the apparatus 10.
  • the apparatus 10 includes cleaning means comprising a sec tion of wiping cloth on either side of a path for a photographic negative 9 to be cleaned.
  • a pair of first rollers 18 and 19, and a pair of second rollers 21 and 22 are rotatably mounted on the plate 14.
  • Two supplies of wiping cloth, designated as 24 and 25, are provided.
  • the wiping cloth 24 is wound upon the rollers 21 and 18 and has a length of the cloth extending therebetween, while the cloth 25 is wound upon and extends between the rollers 19 and 22.
  • the extended lengths of wiping cloth 24 and 25 pass between a pair of tubular support members or inflatable tubes 27 and 28. The adjacent surfaces of these extended lengths of cloth 24 and 25 define the path for a photographic negative 9 to be cleaned.
  • the cleaning means includes pressure means for bringing narrow sections of wiping cloth into complete intimate contact with the surfaces of a negative 9 to be cleaned.
  • the tubes 27 and 28 are closed at their uppermost ends and are hollow.
  • the walls of the tubes 27 and 28 are thin and are formed of a soft flexible material, for example, 0.032 inch thick, 70 durometer polyvinyl chloride.
  • the tubular members 27 and 28 are clamped to a pair of flanges 30 formed around a pair of holes 32 in the plate 14.
  • Housed in the pan 11 is a centrifugal blower and motor assembly 35 which draws its air supply through an orifice 37 formed in the sidewall of the pan 11.
  • the blower 35 discharges its air through a duct 38 which connects the outlet of the blower 35 with the two holes 32.
  • the blower 35 when the blower 35 is operating the interior of the tubes 27 and 28 are slightly pressurized pneumatically, for example, to a pressure of A inch of water above atmospheric pressure.
  • the opposed portions of the wall in the nip between the tubes 27 and 28 define opposed narrow support edges for narrow sections of the lengths of cloth 24 and 25.
  • the cleaning means also includes support means to prevent the two tubes 27 and 28 from moving away from each other when they are pressurized.
  • a pair of curved plates 41 and 42 are attached at one end to the plate 14 and are positioned to support a section of the periphery of the tubes 27 and 28 opposite the adjacent surfaces of the tubes 27 and 28.
  • Means are also provided to neutralize static electrical charges on a cleaned negative after the negative is wiped clean by contact with the sections of wiping cloth 24 and 25.
  • An orifice 45 is formed in the plate 14 adjacent one edge of the path and communicates with the duct 38 so that the pressurized air from the blower will be blown laterally across both surfaces of a negative 9 moved between the tubes 27 and 28.
  • a quantity of polonium encapsulated in particles or spheres as described in US. Patent No. 3,147,225 is disposed in the outlet of the blower 35 (not shown).
  • the air used to pressurize the tubes 27 and 28 and which is blown across a negative 9 is ionized because of alpha particles emitted from the polonium source and will essentially remove static electric charges from both surfaces of the negative.
  • the orifice 45 along with the blower 35 is sized to provide the proper pressure in the tubes 27 and 28 and to blow a sufficient quantity of ionized air across the surfaces of the negative so that essentially all static electrical charges present will be neutralized.
  • the apparatus 10 provides a manually operated means for cleaning a photographic negative which is convenient to use and which neutralizes static electrical charges on a cleaned photographic negative.
  • the changing means or cloth advancing device comprises a train of gears 52, and 53 which are joumaled on the plate 14 and which operably connect a gear 51 attached to the shaft of the roller 22 to a gear 54 attached to the shaft of the roller 21.
  • the gear 53 serves as a thumb wheel and extends through the side of the pan 11.
  • the wiping cloth utilized in the apparatus 10 is a soft lintfree cloth especially designed for the accumulation of dust such as the soft polypropylene random woven cloth with long fibers of fine denier bonded together at the fiber crossover points by fusing or a resin binder which will not transfer from the cloth to a contacting surface. While this cloth provides an example of the type of cloth needed to provide adequate wiping of the negative surface and dust collection, it is contemplated that other forrns of cloth could be utilized where such cloth provides a dust-absorbing lint-free surface to wipe the negative.
  • a cleaning apparatus for the removal of dust and other foreign objects from a sheet upon movement of a said sheet through said apparatus comprising:
  • a pair of hollow tubular support members having flexible semicylindrical walls positioned in opposed relationship to each other to define opposed parallel narrow support edges;
  • pressure means coupled with said support members for providing fluid under a predetermined constant pressure within said support members; and I support means for supporting the wall of each flexible support member in an area opposite said support edge to urge said sections of flexible cloth toward each other with essentially an equal pressure distribution along said support edges to afford intimate uniform pressure for cleaning between said sections of cloth and the surfaces of said sheet.
  • An apparatus further comprising nuclear ionizing means for alpha particle emission mounted on said apparatus for ionizing air along said path to neutralize static electrical charges on a said sheet moved through said apparatus.
  • a duct attached between the outlet of said blower and said support members for directing air under pressure from said blower to said support members, said duct formed with an orifice positioned along said path for a said sheet to direct a stream of air across said path, and wherein said nuclear ionizing means is attached to the outlet of said blower for ionizing air pressurized by said blower so that said stream of air directed across said path will be ionized and will neutralize static electric charges on both surfaces of a said sheet moved through said apparatus after a said sheet has been cleaned by said apparatus.
  • said nuclear alpha particle source comprises encapsulated polonium.
  • said lint-free cloth is a random woven cloth comprising fine denier, nonlinting polypropylene fibers and means for bondirrg said fibers together to avoid the transfer of any material forming said cloth to a said sheet moved through said apparatus.
  • said lint-free cloth is a random woven cloth comprising fine denier, nonlinting polypropylene fibers and a transfer-free bonding means for bonding said fibers together to avoid the transfer of said bonding means to a said sheet moved through said apparatus.
  • An apparatus for cleaning a sheet upon movement thereof along a path defined on said apparatus which apparatus has cleaning means mounted along said path for removing dust and other foreign objects from both surfaces of a said sheet and ionizing means for ionizing air along said path to remove static electric charges from both surfaces of said sheet
  • said ionizing means comprises a nuclear alpha particle source
  • said cleaning means comprises a pair of adjacent flexible, resilient support members having opposed semicylindrical surfaces to define opposed narrow, parallel support edges defining a nip therebetween, which nip is disposed transverse to said path; two lengths of soft, lint-free wiping cloth extending through said nip, the opposed surfaces of the sections of cloth between said narrow support edges defining part of said path, said support members providing low even pressure to urge the opposed surfaces of said sections of cloth toward each other with essentially equal pressure distribution along said support edges when said edges and said lengths of cloth are moved away from each other at said nip by the passage of a said sheet therebetween; and means for

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In General (AREA)
US44317A 1970-06-08 1970-06-08 Sheet-cleaning apparatus Expired - Lifetime US3644953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4431770A 1970-06-08 1970-06-08

Publications (1)

Publication Number Publication Date
US3644953A true US3644953A (en) 1972-02-29

Family

ID=21931695

Family Applications (1)

Application Number Title Priority Date Filing Date
US44317A Expired - Lifetime US3644953A (en) 1970-06-08 1970-06-08 Sheet-cleaning apparatus

Country Status (5)

Country Link
US (1) US3644953A (de)
JP (1) JPS5528750B1 (de)
DE (1) DE2128276C3 (de)
FR (1) FR2099750A5 (de)
GB (1) GB1350927A (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778139A (en) * 1969-03-24 1973-12-11 J Kelly Film projection with cleaning attachment
US3945079A (en) * 1975-03-31 1976-03-23 Minnesota Mining And Manufacturing Company Laminated photographic film cleaning fabric
US4194232A (en) * 1978-03-31 1980-03-18 Cumming James M Ion treatment of photographic film
US4213167A (en) * 1978-03-31 1980-07-15 Cumming James M Planar gas and ion distribution
US4218801A (en) * 1979-06-28 1980-08-26 Pako Corporation Film guide for use with film cleaning apparatus
US4241377A (en) * 1979-03-05 1980-12-23 Cumming James M Film treatment apparatus
GB2323935A (en) * 1997-04-01 1998-10-07 John Dunkley Velvet cleaner for negative films
US5991954A (en) * 1996-02-05 1999-11-30 Fuji Photo Film Co., Ltd. Apparatus for cleaning photo film
US6074108A (en) * 1996-01-04 2000-06-13 Noritsu Koki Co., Ltd. Photographic sensitive material processing equipment, method of cleaning the photographic sensitive material processing equipment, cleaning cartridge, cleaning material, cleaning member recognition system and cleaning member
US6505372B1 (en) * 2001-02-27 2003-01-14 Amphenol Corporation Wire cleaning apparatus and method
CN108787635A (zh) * 2018-07-20 2018-11-13 宁波威霖住宅设施有限公司 片材金属全自动去污机及其使用方法
CN110054106A (zh) * 2019-04-26 2019-07-26 杭州富阳泳富机械有限公司 一种千斤顶专用日常维护保养设备
US11155428B2 (en) * 2018-02-23 2021-10-26 International Test Solutions, Llc Material and hardware to automatically clean flexible electronic web rolls
US11211242B2 (en) 2019-11-14 2021-12-28 International Test Solutions, Llc System and method for cleaning contact elements and support hardware using functionalized surface microfeatures
US11318550B2 (en) 2019-11-14 2022-05-03 International Test Solutions, Llc System and method for cleaning wire bonding machines using functionalized surface microfeatures
CN114653631A (zh) * 2020-12-23 2022-06-24 富联裕展科技(深圳)有限公司 擦拭装置及其控制方法
US11756811B2 (en) 2019-07-02 2023-09-12 International Test Solutions, Llc Pick and place machine cleaning system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927284A (en) * 1931-04-06 1933-09-19 Bell & Howell Co Film cleaning device
US2514321A (en) * 1947-12-23 1950-07-04 Stephen I Fekete Clothes wringer
US3128492A (en) * 1961-10-23 1964-04-14 Frank E Hanscom Device for cleaning photographic film by rotating brushes and by the neutralization of static on the film
US3441971A (en) * 1967-02-06 1969-05-06 Dwight M Gowdey Hand-operated buffer and method of developing same
US3453681A (en) * 1967-08-14 1969-07-08 Ibm Cleaning apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502105A (de) * 1973-05-16 1975-01-10

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927284A (en) * 1931-04-06 1933-09-19 Bell & Howell Co Film cleaning device
US2514321A (en) * 1947-12-23 1950-07-04 Stephen I Fekete Clothes wringer
US3128492A (en) * 1961-10-23 1964-04-14 Frank E Hanscom Device for cleaning photographic film by rotating brushes and by the neutralization of static on the film
US3441971A (en) * 1967-02-06 1969-05-06 Dwight M Gowdey Hand-operated buffer and method of developing same
US3453681A (en) * 1967-08-14 1969-07-08 Ibm Cleaning apparatus

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778139A (en) * 1969-03-24 1973-12-11 J Kelly Film projection with cleaning attachment
US3945079A (en) * 1975-03-31 1976-03-23 Minnesota Mining And Manufacturing Company Laminated photographic film cleaning fabric
US4194232A (en) * 1978-03-31 1980-03-18 Cumming James M Ion treatment of photographic film
US4213167A (en) * 1978-03-31 1980-07-15 Cumming James M Planar gas and ion distribution
US4241377A (en) * 1979-03-05 1980-12-23 Cumming James M Film treatment apparatus
US4218801A (en) * 1979-06-28 1980-08-26 Pako Corporation Film guide for use with film cleaning apparatus
US6074108A (en) * 1996-01-04 2000-06-13 Noritsu Koki Co., Ltd. Photographic sensitive material processing equipment, method of cleaning the photographic sensitive material processing equipment, cleaning cartridge, cleaning material, cleaning member recognition system and cleaning member
US6286170B2 (en) 1996-02-05 2001-09-11 Fuji Photo Film Co., Ltd. Apparatus for cleaning photo film
US5991954A (en) * 1996-02-05 1999-11-30 Fuji Photo Film Co., Ltd. Apparatus for cleaning photo film
US6231681B1 (en) 1996-02-05 2001-05-15 Fuji Photo Film Co., Ltd. Method of cleaning photo film
US6243904B1 (en) 1996-02-05 2001-06-12 Fuji Photo Film Co., Ltd. Apparatus for cleaning photo film
GB2323935B (en) * 1997-04-01 2002-03-13 John Dunkley Velvet negative cleaner
GB2323935A (en) * 1997-04-01 1998-10-07 John Dunkley Velvet cleaner for negative films
US6505372B1 (en) * 2001-02-27 2003-01-14 Amphenol Corporation Wire cleaning apparatus and method
US11434095B2 (en) 2018-02-23 2022-09-06 International Test Solutions, Llc Material and hardware to automatically clean flexible electronic web rolls
US11155428B2 (en) * 2018-02-23 2021-10-26 International Test Solutions, Llc Material and hardware to automatically clean flexible electronic web rolls
EP3755472A4 (de) * 2018-02-23 2021-11-24 International Test Solutions, Inc. Neues material und hardware zur automatischen reinigung von flexiblen elektronischen bahnrollen
CN108787635A (zh) * 2018-07-20 2018-11-13 宁波威霖住宅设施有限公司 片材金属全自动去污机及其使用方法
CN108787635B (zh) * 2018-07-20 2023-10-27 宁波威霖住宅设施有限公司 片材金属全自动去污机及其使用方法
CN110054106A (zh) * 2019-04-26 2019-07-26 杭州富阳泳富机械有限公司 一种千斤顶专用日常维护保养设备
CN110054106B (zh) * 2019-04-26 2020-07-24 杭州富阳泳富机械有限公司 一种千斤顶专用日常维护保养设备
US11756811B2 (en) 2019-07-02 2023-09-12 International Test Solutions, Llc Pick and place machine cleaning system and method
US11318550B2 (en) 2019-11-14 2022-05-03 International Test Solutions, Llc System and method for cleaning wire bonding machines using functionalized surface microfeatures
US11211242B2 (en) 2019-11-14 2021-12-28 International Test Solutions, Llc System and method for cleaning contact elements and support hardware using functionalized surface microfeatures
CN114653631A (zh) * 2020-12-23 2022-06-24 富联裕展科技(深圳)有限公司 擦拭装置及其控制方法
CN114653631B (zh) * 2020-12-23 2023-10-03 富联裕展科技(深圳)有限公司 擦拭装置及其控制方法

Also Published As

Publication number Publication date
DE2128276A1 (de) 1971-12-16
JPS5528750B1 (de) 1980-07-30
GB1350927A (en) 1974-04-24
FR2099750A5 (de) 1972-03-17
DE2128276C3 (de) 1980-11-06
DE2128276B2 (de) 1980-03-06

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