US3909864A - Residual toner removing apparatus - Google Patents
Residual toner removing apparatus Download PDFInfo
- Publication number
- US3909864A US3909864A US436373A US43637374A US3909864A US 3909864 A US3909864 A US 3909864A US 436373 A US436373 A US 436373A US 43637374 A US43637374 A US 43637374A US 3909864 A US3909864 A US 3909864A
- Authority
- US
- United States
- Prior art keywords
- section
- cleaner
- dust collecting
- brush bristles
- brush
- 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
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Classifications
-
- 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
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0035—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a brush; Details of cleaning brushes, e.g. fibre density
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0005—Cleaning of residual toner
Definitions
- ABSTRACT A residual toner removing apparatus which comprises a cleaner section, a dust collecting section, a filter section and a suction section contained in a housing having an opening adjacent to a known photoreceptor surface.
- Brush bristles of a cleaner brush cylinder in the cleaner section are adapted to be charged with the same polarity as toner particles wiped off the photoreceptor surface so as to repel the toner particles, which are subsequently fed by an air flow into the dust collecting section and attracted by dust collecting plates with opposite charge for accumulation in the dust collecting section.
- the toner particles still remaining in the air flow are filtered in the filter section with a coarse filter and a fine rollup filter for complete elimination.
- the present invention relates to a toner removing apparatus and, more particularly, to a residual toner removing apparatus for an electrostatic copying machine.
- the elimination of toner particles remaining on a photoreceptor surface after transferring a toner powder image on a copy paper sheet is carried out by wiping the residual toner particles off the photoreceptor surface with a rotating cleaner brush after the photoreceptor is electrically neutralized by an AC. discharger.
- the residual toner particles may be approximately completely removed from the photoreceptor surface by the above procedure alone, the toner particles adhering to the brush bristles of the cleaner brush can not be sufficiently collected by a mere suc- ,tion device such as fan, the amount of toner particles adhering to the bristles gradually increasing in the course of time with reduction of cleaning effect and durability of the cleaner brush itself, resulting in a larger power consumption during operation of the apparatus.
- a filter of filter bag type is employed which, besides being bulky and troublesome in replacing is not sufficiently efficient for perfectly filtering the small amount of toner particles contained in a cleaning air flow, resulting in a larger size of the apparatus itself.
- an essential object of the present invention is to provide a compact residual toner removing apparatus which provides efficient removal of residual toner particles with subsequent elimination of the disadvantages inherent in the conventional residual toner removing device.
- Another important object of the present invention is to provide the residual toner removing apparatus of the above described type wherein brush bristles of a cleaner brush are electrically charged with the same polarity as the toner particles for easy removal of the toner particles from the brush bristles.
- a further object of the present invention is to provide the residual toner removing apparatus of the above described type wherein the collection of removed toner particles are easily effected by the provision of a removable cover plate having dust collecting plates electrically charged with opposite polarity to the toner particles, and a buffer plate for an air flow containing toner particles.
- a still further object of the present invention is to provide the residual toner removing apparatus of the above described type wherein the toner particles contained in the air flow are Completely filtered at a coarse filter and a fine filter without clogging the filters and variation in the rate of air flow.
- the residual toner removing apparatus comprises a cleaner section, a dust collecting section, a filter section and a suction section contained in a housing having an opening adjacent to a known photoreceptor surface driven by a conventional means.
- a cleaner brush cylinder with brush bristles secured to the surface thereof is adapted to rotate between an upper casing plate and a lower casing electrically insulated from each other, the brush bristles rubbing during rotation against the middle portion of the upper casing,
- the above upper casing plate with negative charge is electrically connected to a pair of dust collecting plates in the dust collecting section for positively attracting the removed toner particles thereto.
- the subsequent filter section comprises a coarse filter, and a fine rollup filter with filter screen successively displaceable by winding, thus resulting in small size of the whole apparatus with uniform air flow and suction force by the suction section for perfect elimination of residual toner particles.
- FIG. 1 is a schematic diagram showing a sectional side view of a residual toner removing apparatus according to the present invention
- FIG. 2 is a schematic diagram showing a perspective view of a filter'section of the above residual toner removing apparatus
- FIG. 3 is a cross sectional view taken along the line IIII in FIG. 1.
- the residual toner removing apparatus which extends the width of a known electrophotosensitive photoreceptor l of an electrostatic copying machine generally comprises 4 sections, i.e., a cleaner section A, a dust collecting section B, a filter section C and suction section D contained in a housing T of rectangular prism shape having an elongated opening Ta extending the width of the photoreceptor 1 adjacent to the surface thereof.
- the photoreceptor l is of a known construction and driven by a conventional means.
- the bottom of the housing T close to the opening Ta is formed into a concave lower casing 5 in the form of a trough, over which a cleaner brush cylinder 2 with-brush bristles 3 of animal fur such as rabbit fur or synthetic fur secured to the surface thereof is rotatably provided by suitable means.
- a cleaner brush cylinder 2 with-brush bristles 3 of animal fur such as rabbit fur or synthetic fur secured to the surface thereof is rotatably provided by suitable means.
- convex upper casing plate 4 fixedly provided above the brush cylinder 2 is electrically insulated from the lower casing 5, and divides the cleaner section A into two portions, A for the cylinder 2 and 7 for air passage.
- the tips of the brush bristles 3 are adapted to rub against the inner surface of the upper casing plate 4 of the middle part 4a thereof, keeping a fixed distance 6 to the inner surface of the lower casing 5 during rotation, while applying very light pressure to the photoreceptor surface 1.
- the upper casing 4 which extends the width of the housing T is made of brass, being adapted to be charged negative when rubbed by the tips. of brush bristles 3 during rotation of the cylinder 2, while the brush bristles 3 are charged positive, i.e., the same polarity as the toner powder.
- the dust collecting section B further comprises a removable rectangular cover plate 9 which fits a rectangular opening Tb formed in the bottom of the housing T and extends the width of the housing T, two dust collecting plates 10 and 10' removably fixed on the cover plate 9 at right angles thereto in spaced relation to each other, projecting approximately half way into the housing T, and a buffer plate 11 fixed at right angles to the inner surface of the housing T at the upper part thereof and projecting half way into the housing T between the plates 10 and 10, the dust collecting plates 10 and 10' and the buffer plate 1 1 extending the width of the housing T forming a passage 12 for air flow containing toner particles.
- the plates 10 and 10' are electrically connected to the upper casing 4 with negative charge in the cleaner section A.
- the residual toner particles with positive Charge wiped off the surface of the photoreceptor 1 by the rotation of the brush bristles 3 and contained in the flow of air caused by a silocco fan 17 provided in the suction section D are adapted to be attracted to the surfaces of the dust collecting plates 10 and 10 with negative charge.
- the filter section comprises a coarse filter 13 installed adjacent to the plate 10 with a fine rollup filter 14 provided at the back of the filter 13 in spaced relation, the rollup filter 14 being adapted to be successively wound into a case 15 by turning a winding knob 16 as in a camera.
- the filters 13 and 14 are of such dimensions that fit the width and the height of the housing T, forming a filter partition in the housing T at the back of the plate 10.
- the sirocco fan 17 for suction is provided to cause the air flow through the housing T.
- the dust collecting plates 10 and 10' are made of electrically conducting material such as aluminum are connected to the upper casing 4 by a line L as is seen from FIG. 1 and adapted to be: charged with a voltage between 4000 and 5000 volts in the opposite polarity to the toner particles similarly to the upper casing 4, while the lower casing 5 is electrically insulated from the dust-collecting electrode plates 10 and 10' and also earthed through a lineL.
- the provision of thebaffle plate 11 between the plates 10 and 10 is effective for preventing the air flow containing the separated toner particles from being directly fed into the filter section C with sufficient attraction of the toner particles to the surfaces of the plates,
- FIG. 3 which shows a mechanism for removing the toner particles adhering to the surface of spectively.
- a knob 19 is'rigidly fixed'to'the right end of I the bar 18 projecting from the opening Tc while a rectangular electode cleaner plate 20 contacting the left' side wall of the housingT is secured tothe left end of the bar 18 inside the housing T.
- the cleaner plate 20 with height fitting in the height of the side walls of the housing'T and length extending the length of the dust collecting section Bis provided with slits corresponding to the cross sections of the dust collecting plates 10 and 10 and also the buffer platell, so thatthe' plate 20 can be slidably moved along the surfaces of the plates 10 and 10, and the baffle plate 11 inclose contact therewith.
- a band of blade 21 made of elastic mate rial such as rubber and having the fa-cross section of a right- ,angled triangle is rigidly fixedto the surface of the cleaner plate 20 along the configuration of the slits" thereon for a firm contact without rattling orthe like.
- An outlet T d for the toner powder extending the flenght of the cleaner plate 20 is provided at the lower part of the right side wall of the housing T with a corresponding trough-shape toner tank 22 removably attached to the edges of the outlet Td.
- the knob 19 is pulled out in the direction of an arrow to the position shown in chain lines with the cleaner plate 20 and the blade 21 moving in the same direction by means of the guide bar 18, during which time the blade '21 scrapes theitoner powder off the surface of the plates 10 and 10" and the baffle plate 11, simultaneously carrying'the-removed toner brush cylinder 2.
- the toner particles come out onto the photoreceptor l at the upper part thereof, they are carried into the dust collecting section B by an air flow shown with an arrow through the passage 7 formed between the upper casing 4 and the top of the housing T without scattering onto the photoreceptor side.
- the positively charged toner particles thus fed into the dust collecting section B are attracted by the negatively charged dust collecting plates 10 and 10 which are electrically connected to the upper casing 4 also Furthermore, as the fine rollup filter .14 can be successively displaced by winding in the direction of the arrow in FIG. 2 so as to bring unexposed filter screen into the path of the incoming air, no reduction of air flow rate is caused by the clogging of the filter screen.
- the positively charged residual toner particles on the photoreceptor 1 are wiped off by the brush bristles 3 of the brush cylinder 2, electrically repelled from the positively charged brush bristles 3, and fed into the dust collecting section B by the air flow, provision of a flicker rod 8 at the rear of the brush cylinder 2 in the path of the brush bristles 3 for mechanically beating off negatively or neutrally charged toner particles without electrical repelling is effective for more complete elimination of the toner particles as adhesion of the toner particles to the brush bristles 3 is further prevented.
- a flicker rod 8 at the rear of the brush cylinder 2 in the path of the brush bristles 3 for mechanically beating off negatively or neutrally charged toner particles without electrical repelling is effective for more complete elimination of the toner particles as adhesion of the toner particles to the brush bristles 3 is further prevented.
- the flicker rod 8 is of a conventional construction.
- the residual toner particles adhering to the photoreceptor surface 1 are mechanically wiped off by the brush bristles 3, and the toner particles separated thereby with positive charge are electrically repelled by the positively charged brush bristles 3, simultaneously being carried away into the dust collecting section B by the air flow, thus keeping the photoreceptor surface 1 perfectly clean for a long period of time with effective collection of the separated toner.
- the dust collecting plates 10 and 10 are electrically connected to the upper casing 4 for charging the plates 10 and 10' with opposite polarity to the separated toner powder as the brush bristles 3 rub against the middle portion 4a of the upper casing 4 during rotation, thus completely eliminating the toner particles contained in the air flow by electrical attraction.
- the buffer plate 11 to divert the air flow is effective for more efficient collection of the separated toner particles by gravitation.
- the removable cover plate 9 having the dust collecting plates 10 and 10' removably secured thereon is convenient for easy collection of the removed toner powder.
- the small sized filter comprising the coarse filter 13 and fine rollup filter 14 adopted instead of the conventional bulky filter of filter bag type efficiently prevents the clogging of filter screen with constant flow rate of air especially by the fine rollup filter 14 being successively displaceable by winding.
- the residual toner particles wiped off the photoreceptor surface by the brush bristles during rotation of the brush cylinder are positively fed into the subsequent sections without the toner particles being dispersed outside the apparatus and with minimum soiling of the brush bristles, thus the photoreceptor surface being thoroughly cleaned with little power consumption, which is suitable for wide industrial application.
- a residual toner removing apparatus which comprises a cleaner section, a dust collection section, and a filter section followed by a suction section
- the improvements which comprise brush bristles of a cleaner brush cylinder rotatably provided in said cleaner section being adapted to rub against an upper casing plate at an approximately middle portion thereof for charging said brush bristles with the same polarity as toner particles, and said upper casing plate with opposite polarity to said brush bristles, and said cleaner brush cylinder being provided between said upper casing plate and a lower casing electrically insulated from each other with a fixed distance between tips of said brush bristles and said lower casing, said toner particles wiped off a photoreceptor surface by said brush bristles being electrically repelled from said brush bristles and simultaneously fed into a subsequent dust collecting section by an air flow produced by a suction in said suc' tion section, and dust collecting plates provided in said dust collecting section, said dust collecting plates being electrically connected to said charged upper casing plate for attracting said toner particles to said dust
- a residual toner removing apparatus which comprises a cleaner section, a dust collecting section, and a filter section followed by a suction section
- the improvements which comprise brush bristles of a cleaner brush cylinder rotatably provided in said cleaner section being adapted to rub against an upper casing plate at an approximately middle portion thereof for charging said brush bristles with same polarity as toner particles and said upper casing plate with opposite polarity to said brush bristles, and said cleaner brush cylinder being provided between said upper casing plate and a lower casing electrically insulated from each other with a fixed distance between tips of said brush bristles and said lower casing, said toner particles wiped off a photoreceptor surface by said brush bristles being electrically repelled from said brush bristles and simultaneously fed into a subsequent dust collecting section by an air flow produced by a suction in said suction section, wherein a coarse filter and a fine rollup filter with filter screen successively displaceable by winding are provided in said filter section between said dust collecting section and said suction section
- a residual toner removing apparatus which comprises a cleaner section, a dust collecting section, and a filter section followed by a suction section
- the improvements which comprise brush bristles of a cleaner brush cylinder rotatably provided in said cleaner section being adapted to rub against an upper casing plate at an approximately middle portion thereof for charging said brush bristles with same polarity as toner particles and said upper casing plate with opposite polarity to said brush bristles, for preventing the toner particles from adhering to said brush bristles and said cleaner brush cylinder being provided between said upper casing plate and a lower casing electrically insulated from each other with a fixed distance between tips of said brush bristles and said lower casing, said toner particles wiped off a photoreceptor surface by said brush bristles being electrically repelled from said brush bristles and simultaneously fed into a subsequent dust collecting section by an air flow produced by a suction in said suction section, said cleaner brush, after the brush bristles thereof rub against said upper casing, rotating in a direction
- a residual toner removing apparatus as claimed in claim 1 wherein a cleaner plate having slits corresponding to cross sections of said dust collecting plates and said baffle plate is provided in said dust collecting section so as to move along surfaces of said dust collecting plates and baffle plate.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48012575A JPS49102348A (de) | 1973-01-30 | 1973-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3909864A true US3909864A (en) | 1975-10-07 |
Family
ID=11809147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US436373A Expired - Lifetime US3909864A (en) | 1973-01-30 | 1974-01-24 | Residual toner removing apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US3909864A (de) |
JP (1) | JPS49102348A (de) |
DE (1) | DE2404087A1 (de) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4041902A (en) * | 1976-05-11 | 1977-08-16 | Xerox Corporation | Filter apparatus |
US4058086A (en) * | 1976-05-11 | 1977-11-15 | Xerox Corporation | Emission controller for development apparatus |
US4155329A (en) * | 1977-01-31 | 1979-05-22 | Xerox Corporation | Magnetic brush developing device |
US4161923A (en) * | 1977-12-22 | 1979-07-24 | International Business Machines Corporation | Electrophotographic developer with carrier overflow control |
US4197610A (en) * | 1977-10-17 | 1980-04-15 | California Institute Of Technology | Cleaning devices |
US4295734A (en) * | 1979-02-01 | 1981-10-20 | Olympus Optical Company Ltd. | Filter assembly for collecting used toner of electrophotographic copying machine |
US4361922A (en) * | 1981-01-06 | 1982-12-07 | Schlegel Corporation | Cleaning brush for electrostatic copiers, printers and the like |
US4377334A (en) * | 1980-01-11 | 1983-03-22 | Olympus Optical Company Ltd. | Magnet roll developing unit |
US4583112A (en) * | 1984-10-29 | 1986-04-15 | Xerox Corporation | Venting system for the developer housing of an electrostatic copying machine |
US4692017A (en) * | 1984-12-24 | 1987-09-08 | Delphax Systems | Toner transfer apparatus |
US4734741A (en) * | 1987-08-13 | 1988-03-29 | Eastman Kodak Company | Particulate material cleaning apparatus |
US5115760A (en) * | 1989-04-01 | 1992-05-26 | Brother Kogyo Kabushiki Kaisha | Developer material coating apparatus having developer material removing unit |
US5189473A (en) * | 1990-04-10 | 1993-02-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Inside contamination prevention structure for a device utilizing toner particles |
US5239722A (en) * | 1992-04-23 | 1993-08-31 | Bake Star, Inc. | Pan cleaning assembly |
US5612775A (en) * | 1994-03-08 | 1997-03-18 | Canon Kabushiki Kaisha | Displace cleaning apparatus with toner scattering feature and electrophtographic image forming apparatus using same |
US6725776B2 (en) * | 2000-03-24 | 2004-04-27 | Fuji Photo Film Co., Ltd. | Sheet-like member cleaning device and radiation image information reading apparatus which incorporates such sheet-like member cleaning device |
US20070065171A1 (en) * | 2005-09-22 | 2007-03-22 | Yasushi Koshimura | Image forming apparatus |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5550690Y2 (de) * | 1973-08-16 | 1980-11-26 | ||
JPS5426174B2 (de) * | 1974-02-12 | 1979-09-03 | ||
JPS51127051U (de) * | 1975-04-10 | 1976-10-14 | ||
US3955235A (en) * | 1975-07-07 | 1976-05-11 | International Business Machines Corporation | Scavanging apparatus for an electrostatic copier |
DE102009054031A1 (de) * | 2009-11-20 | 2011-05-26 | Wu, Fu-Chi, Northridge | Luftbehandlungsgerät |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751616A (en) * | 1953-07-17 | 1956-06-26 | Haloid Co | Brush cleaning device |
US3534427A (en) * | 1968-03-18 | 1970-10-20 | Xerox Corp | Cleaning apparatus for electrostatic printing machines |
US3780391A (en) * | 1972-06-09 | 1973-12-25 | Eastman Kodak Co | Apparatus for cleaning a residual image from a photosensitive member |
US3795025A (en) * | 1972-11-21 | 1974-03-05 | Xerox Corp | Electrophotographic photoreceptor cleaning apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3590412A (en) * | 1968-05-24 | 1971-07-06 | Xerox Corp | Brush cleaning device for electrostatic machines |
-
1973
- 1973-01-30 JP JP48012575A patent/JPS49102348A/ja active Pending
-
1974
- 1974-01-24 US US436373A patent/US3909864A/en not_active Expired - Lifetime
- 1974-01-29 DE DE2404087A patent/DE2404087A1/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751616A (en) * | 1953-07-17 | 1956-06-26 | Haloid Co | Brush cleaning device |
US3534427A (en) * | 1968-03-18 | 1970-10-20 | Xerox Corp | Cleaning apparatus for electrostatic printing machines |
US3780391A (en) * | 1972-06-09 | 1973-12-25 | Eastman Kodak Co | Apparatus for cleaning a residual image from a photosensitive member |
US3795025A (en) * | 1972-11-21 | 1974-03-05 | Xerox Corp | Electrophotographic photoreceptor cleaning apparatus |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4041902A (en) * | 1976-05-11 | 1977-08-16 | Xerox Corporation | Filter apparatus |
US4058086A (en) * | 1976-05-11 | 1977-11-15 | Xerox Corporation | Emission controller for development apparatus |
US4155329A (en) * | 1977-01-31 | 1979-05-22 | Xerox Corporation | Magnetic brush developing device |
US4197610A (en) * | 1977-10-17 | 1980-04-15 | California Institute Of Technology | Cleaning devices |
US4161923A (en) * | 1977-12-22 | 1979-07-24 | International Business Machines Corporation | Electrophotographic developer with carrier overflow control |
US4295734A (en) * | 1979-02-01 | 1981-10-20 | Olympus Optical Company Ltd. | Filter assembly for collecting used toner of electrophotographic copying machine |
US4377334A (en) * | 1980-01-11 | 1983-03-22 | Olympus Optical Company Ltd. | Magnet roll developing unit |
US4361922A (en) * | 1981-01-06 | 1982-12-07 | Schlegel Corporation | Cleaning brush for electrostatic copiers, printers and the like |
US4583112A (en) * | 1984-10-29 | 1986-04-15 | Xerox Corporation | Venting system for the developer housing of an electrostatic copying machine |
US4692017A (en) * | 1984-12-24 | 1987-09-08 | Delphax Systems | Toner transfer apparatus |
US4734741A (en) * | 1987-08-13 | 1988-03-29 | Eastman Kodak Company | Particulate material cleaning apparatus |
US5115760A (en) * | 1989-04-01 | 1992-05-26 | Brother Kogyo Kabushiki Kaisha | Developer material coating apparatus having developer material removing unit |
US5189473A (en) * | 1990-04-10 | 1993-02-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Inside contamination prevention structure for a device utilizing toner particles |
US5239722A (en) * | 1992-04-23 | 1993-08-31 | Bake Star, Inc. | Pan cleaning assembly |
US5384931A (en) * | 1992-04-23 | 1995-01-31 | Bake Star, Inc. | Pan cleaning assembly |
US5612775A (en) * | 1994-03-08 | 1997-03-18 | Canon Kabushiki Kaisha | Displace cleaning apparatus with toner scattering feature and electrophtographic image forming apparatus using same |
US6725776B2 (en) * | 2000-03-24 | 2004-04-27 | Fuji Photo Film Co., Ltd. | Sheet-like member cleaning device and radiation image information reading apparatus which incorporates such sheet-like member cleaning device |
US20040169153A1 (en) * | 2000-03-24 | 2004-09-02 | Fuji Photo Film Co., Ltd. | Sheet-like member cleaning device and radiation image information reading apparatus which incorporates such sheet-like member cleaning device |
US6917051B2 (en) | 2000-03-24 | 2005-07-12 | Fuji Photo Film Co., Ltd. | Sheet-like member cleaning device and radiation image information reading apparatus which incorporates such sheet-like member cleaning device |
US20070065171A1 (en) * | 2005-09-22 | 2007-03-22 | Yasushi Koshimura | Image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS49102348A (de) | 1974-09-27 |
DE2404087A1 (de) | 1974-08-01 |
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