CA1038442A - Continuous blade cleaner - Google Patents
Continuous blade cleanerInfo
- Publication number
- CA1038442A CA1038442A CA207,340A CA207340A CA1038442A CA 1038442 A CA1038442 A CA 1038442A CA 207340 A CA207340 A CA 207340A CA 1038442 A CA1038442 A CA 1038442A
- Authority
- CA
- Canada
- Prior art keywords
- imaging surface
- belt
- cleaning
- edge
- 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
Links
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
- G03G21/0011—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 blade; Details of cleaning blades, e.g. blade shape, layer forming
- G03G21/0029—Details relating to the blade support
Abstract
ABSTRACT OF THE DISCLOSURE
An electrostatographic cleaning system for cleaning imaging material from the imaging surface by two cleaning edges of an endless belt which continuously moves transversely across the imaging surface. Providing a mobius (one-half) twist in the belt, and appropriate supports, causes the two belt edges to continuously switch relative to the imaging surface. Cleaning and/or lubricating of the cleaning edges can be provided spaced from the imaging surface.
An electrostatographic cleaning system for cleaning imaging material from the imaging surface by two cleaning edges of an endless belt which continuously moves transversely across the imaging surface. Providing a mobius (one-half) twist in the belt, and appropriate supports, causes the two belt edges to continuously switch relative to the imaging surface. Cleaning and/or lubricating of the cleaning edges can be provided spaced from the imaging surface.
Description
103844~:
This invention relates to electrostatographic - imaging systems and, more particularly, to an improved trans-lating blade cleaning apparatus for cleaning electrostato-graphic image developer material from an imaging surface.
The general development and cleaning of imaging materials on a re-usable imaging surface in electrostato-graphy is well-known. In xerography, for example, a latent electrostatic image is optically foEmed on a photoconductive imaging surface and developed by depositing on the latent image a charged finely divided dry electroscopic visible image developer material known in the art as toner. This toner image may then be electrostatically transferred and permanently fixed to a support surface such as paper. However, after such transfer, residual toner remains on the photoreceptor, which for re-use thereof must be removed by a cleaniny operation at a cleaning station. This cleaning of residual toner from the photoreceptor must be accomplished rapidly and thoroughly yet without damage to the delicate photoreceptor, and the removed toner must be appropriately disposed of. The residual toner is tightly retained on the photoconductive surface and is difficult to remove. This retention is believed to be caused both by electrical charge attractions and by Van der Waals forces that prevent complete transfer of the toner to the support surface. Also, a small percentage of the toner can be wrongly charged, or uncharged, either initially or by virtue of the cleaning operation. Thus, cleaning of the imaging surface is one of the more difficult technical problems in practical xerography. Conventional photoreceptor cleaning devices are brush type cleaning apparatus, web type cleaning ,~
: 1~3~4;~
apparatus, or blade type cleaning apparatus.
Exemplary xerographic pho-toreceptor blade type dry - toner cleaning apparatus is disclosed in U. S. Patents Nos. `~
3,438,706, issued April 15, 1969, to H. Tanaka et al;
3,552,850, issued January 5, 1971, to S. F. Royka et al;
3,634,077j issued January 11, 1972, to W. A. Sullivan; ' 3,660,863, issued May 9, 1972, to D. P. Gerbasi; 3,724,019, issued April 3, 1973, to Alan L. Shanly; 3,724,020, issued April 3, 1973, to Henry R. Till; and 3,740,789, issued June 26, 1973, to Raymond G. Ticknor. Pending applications include Canadian Applications Serial No. 193,288, filed February 22, 1974, by Richard E. Smith and Serial No. 193,289, filed February 22, 1974, by Christ S. Hasiotis. Toner clean-ing systems with a reciprocally translating polyurethane clean-ing blade are commercially embodied in the Xerox Corporation "4000" and i'3100" xerographic copiers. The present invention represents a development in the above-cited technology.
One problem in the use of cleaning blade systems for cleaning moving xerographic photoreceptor imaging surfaces of imaging material has been the tendency of blade edge sealing failures, such as localized tuck-unders, to occur at points where the blade edge is being repeatedly struck at the same point by the same defects on the imaging surface being repeatedly rotated past the blade edge while the blade edge is stationary. Cyclic translation movement of the cleaning blade transverse the direction of the photoreceptor has been ;
previously found to avoid most of these problems, especially if the translation continues after the imaging surface stops . . . .
and a short dwell-time drive cam or eccentric multiple lobe - drive cam is used. Lubrication of the imaging surfaee has been generally provided. U. S. Patents Nos. 3,724,019, 3,724,020 and 3,740,789 cited above relate to such translation mechanisms. However, if reciprocal lateral translation during machine operation is used, there will be end dwell positions on the photoreceptor at whieh the blade stops to reverse in each translation cycle. Thus, in these dwell points the blade is not fully protected by translation from the above-described single point multiple impacts from the same defects on the photoreceptor. Also, as a practical matter, the usable length of a reciprocating cleaning blade edge is limited to the width of the imaging surface.
The present invention provides a solution to the above~described problems by a simple means allowing fully eontinuous blade translation relative to the photoreceptor, and substantially increased effective cleaning blade length without a eorresponding inerease in the cleaning system -~
dimensions, thereby providing an increased effective lifetime for the blade. The present cleaning system also allows - ' eleaning and/or lubrieating of the blade cleaning edge at a eonvenient position spaced away from the photoreceptor.
In accordance with this invention there is provided in eleetrostatographie apparatus, the improvement in the eleaning system for eleaning imaging material from an imaging surface with a eleaning blade eomprising: an endless belt having two eontinuous opposite edges, said edges being adapted to elean said imaging surfaee; support means for eontinous motion of said belt ineluding eontinuously moving ~ - 4 -, ~ 8442 a portion of one said edge of said belt transversely across said imaging surface in cleaning engagement with said imaging surface;
and reversing means for automatically reversing said one edge of said belt with the other said edge of said belt into cleaning engagement with said imaging surface.
! Various doctor or cleaning blade structures are, of course, known in the non-electrostatographic arts. For ~
example, U.S. Patent No. 2,664,792, issued January 5, 1954, -to E.P. Cook discloses pealing paper from a roll by a steel doctor blade band which is wound between reels spaced at each side of the roll, where it is also cleaned and lubricated. Canadian Patent No. 562,364, issued August 26, 1958 to '' `
10~8*42 Howard E. Roscoe teaches removing liquid from a film web with an endless metal band continuously moving transversely the web, guided by grooved supports. The band is supported by pulleys at each side of the web and cleaned by wipers.
Further features and advantages of the present invention pertain to the particular apparatus and functions whereby the above-mentioned aspects of the invention are attained. Accordingly, the invention will be better under-stood by reference to the following description and to the drawings forming a part thereof, which are substantially to scale, wherein:
Fig. 1 is a plan view of an exemplary embodiment of the present cleaning blade system; and Fig. 2 is a cross-sectional view taken along the line 2-2 of Fig. 1.
Referring now to the drawings, Figs. 1 and 2, there is shown therein an exemplary cleaning system 10 in accord-ance with the present invention for cleaning toner from the moving photoreceptive imaging surface 12 of a xerographic drum 14. The photoconductive surface 12 is cleaned by a contacting cleaning blade 16 extending transverse the direction of movement (rotation) of the imaging surface 12~ It may be seen that the blade 16 is in the form of a flexible endless belt having two continuous opposite edges 18 and 20. Both of these edges are adapted to clean the imaging surface 12.
However, only one edge at a time is held against and trans-versely moved across the imaging surface in cleaning engage-ment therewith.
10389~42 The blade or belt 16 here contains a mobius twist in a portion of the belt which is spaced away from the imaging surface. That is, one flight of the blade 16 has a one-half turn twist. This has the effect of turning the belt over and thereby reversing the two blade edges 18 and 20 in each rotation or cycle of the endless blade 16. This provides an automatic reversal in each cycle of the belt movement of the edge of the blade which is in cleaning engagement with the imaging surface. The endless loop form of the belt 16 doubles the effective length of the cleaning blade edge relative to its overall length, and the reversal changes the edges as well.
The blade 16 is rotatably supported at its opposite ends by and between two identical cylindrical pulleys 22 and 24. Preferably the blade 16 is held in tension between these two pulleys. The blade 16 is also supported by an appropriate linear guide 26 in that portion of the belt which is in cleaning engagement with the imaging surface. ~he guide 26 here is an exemplary linear, continuous, sliding support channel in which the edge 20 of the belt (the outside edge of the blade 16) is slidably retained for proper cleaning engagement with the imaging surface. The inside of the channel 26 may, of course, be coated with any suitable lubricant material. Preferably the channel 26 also includes a structure for flexibly deforming the blade 16 against the imaging surface. This is illustrated in Fig. 2, where it may be seen that here there is an extending lip 28 of the chann~l 26 which continuously forcibly engages the rear central ~ `
~038~l~2 portion of the blade 16 to flexibly press the extending edge 18 of the blade against the imaging surface. The channel 26 and the pulleys 22 and 24 together maintain the lower flight of the blade 16 in a constant position (except for its linear motion transverse direction of motion of ~he imaging surface. It will be noted that the only twist in the belt 16 is that in the upper flight of the belt between the two pulleys, i. e.
the flight which lS spaced away from the imaging surface.
The lower (cleaning engagement) flight of the belt is substantially fully planar between the two pulleys.
; One or both the pulleys 22 and 24 may be conventionally driven by an electric motor as shown, or other suitable con-ventional drive means, at the desired blade translation speed.
Since the blade motion is preferably continuous and unidirectional a complex drive mechanism is not required.
With the disclosed structure a cleaning station can be provided for cleaning the edges of the belt at a single small area spaced from the imaging surface. This is exemplified hereby a cleaning brush 30 engaging the edge 20 of the blade 16.
This cleaning brush 20 need only encompass the one edge 20.
Since the edges 18 and 20 reverse in each otation of the belt, both edges can be cleaned by a single small cleaning brush 30 at this one location. It may also be seen that the cleaning brush 30 is (desirably) spaced away from the imaging surface ., ,, . , . ; ,: ~
: i038442 by the full width of the belt. This is enabled by the mobius nature of the blade 16 and its continuous undirectional motion.
The cleaning brush 30-is-located here off to one side of the im-aging surface 12, adjacent the pulley 22. However, it will be appreciated that other locations may be provided which will also allow continual cleaning without any interference or con-tact with the imaging surface. Since the cleaning station may be located at a single point for the entire belt, a simple single point toner removal system (not shown) may also be utilized in connection therewith. Thus, a trough and a~er system extending the full length of the cleaning blade, as utilized in some of the above cited prior art structures is not required.
Remote lubrication of the cleaning blade edges is exemplified here by a stick or bar lubricant applicator 32 for applying a suitable imaging surface lubricant for the blade edges, such as zinc stearate or the like. As shown, this may be applied directly to the cleaning corner edge of the blade edge 18 immediately prior to its engagement with the imaging surface. Other lubricant applicator locations may be utilized, all of which can take advantage of the ability to apply the lubricant at a position spaced away from the imaging surface. Thus, with this arrangement the lubricant can be applied only as needed to only the cleaning blade edge and does not need to be applied over the imaging surface -tself or with the imaging material (toner).
:. ,. :
~Q3~i4~
As may be seen from Fig. 2 the exemplary blade structure 16, shown here in cross section is preferably a thin steel strap central portion or material to which two continuous elastomer material cleaning tips are mounted.
The cleaning edges are preferably made by forming sharp edges on these elastomer tips to engage the imaging surface. This basic preferred structure is described in further detail (but 4 l for ~ single edge blade) in the above cited-U. 5. Patent ~3~a~
~pplications, Serial Numbers ~ 5 and ~J~G~. However, other suitable cleaning blade structures, such as a monolithic band of polyurethane rubber, with or without reinforcing mater-ials, may be utilized.
In conclusion, it may be seen that there has been provided by the above disclosed structure an improved clean ng system in which the cleaning blade can move continuously to avoid any dwell points, and has an increased effective length, for increased blada life and imp_oved cleaning. Al.houyh the exemplary embodiment described herein is presently con-sidered to be preferred, various other modificat~ons or improvements will be apparent to those skilled in the art.
The following claims are intended to cover all such variations and modifications as fall within the true spirit and scope of the invention.
,
This invention relates to electrostatographic - imaging systems and, more particularly, to an improved trans-lating blade cleaning apparatus for cleaning electrostato-graphic image developer material from an imaging surface.
The general development and cleaning of imaging materials on a re-usable imaging surface in electrostato-graphy is well-known. In xerography, for example, a latent electrostatic image is optically foEmed on a photoconductive imaging surface and developed by depositing on the latent image a charged finely divided dry electroscopic visible image developer material known in the art as toner. This toner image may then be electrostatically transferred and permanently fixed to a support surface such as paper. However, after such transfer, residual toner remains on the photoreceptor, which for re-use thereof must be removed by a cleaniny operation at a cleaning station. This cleaning of residual toner from the photoreceptor must be accomplished rapidly and thoroughly yet without damage to the delicate photoreceptor, and the removed toner must be appropriately disposed of. The residual toner is tightly retained on the photoconductive surface and is difficult to remove. This retention is believed to be caused both by electrical charge attractions and by Van der Waals forces that prevent complete transfer of the toner to the support surface. Also, a small percentage of the toner can be wrongly charged, or uncharged, either initially or by virtue of the cleaning operation. Thus, cleaning of the imaging surface is one of the more difficult technical problems in practical xerography. Conventional photoreceptor cleaning devices are brush type cleaning apparatus, web type cleaning ,~
: 1~3~4;~
apparatus, or blade type cleaning apparatus.
Exemplary xerographic pho-toreceptor blade type dry - toner cleaning apparatus is disclosed in U. S. Patents Nos. `~
3,438,706, issued April 15, 1969, to H. Tanaka et al;
3,552,850, issued January 5, 1971, to S. F. Royka et al;
3,634,077j issued January 11, 1972, to W. A. Sullivan; ' 3,660,863, issued May 9, 1972, to D. P. Gerbasi; 3,724,019, issued April 3, 1973, to Alan L. Shanly; 3,724,020, issued April 3, 1973, to Henry R. Till; and 3,740,789, issued June 26, 1973, to Raymond G. Ticknor. Pending applications include Canadian Applications Serial No. 193,288, filed February 22, 1974, by Richard E. Smith and Serial No. 193,289, filed February 22, 1974, by Christ S. Hasiotis. Toner clean-ing systems with a reciprocally translating polyurethane clean-ing blade are commercially embodied in the Xerox Corporation "4000" and i'3100" xerographic copiers. The present invention represents a development in the above-cited technology.
One problem in the use of cleaning blade systems for cleaning moving xerographic photoreceptor imaging surfaces of imaging material has been the tendency of blade edge sealing failures, such as localized tuck-unders, to occur at points where the blade edge is being repeatedly struck at the same point by the same defects on the imaging surface being repeatedly rotated past the blade edge while the blade edge is stationary. Cyclic translation movement of the cleaning blade transverse the direction of the photoreceptor has been ;
previously found to avoid most of these problems, especially if the translation continues after the imaging surface stops . . . .
and a short dwell-time drive cam or eccentric multiple lobe - drive cam is used. Lubrication of the imaging surfaee has been generally provided. U. S. Patents Nos. 3,724,019, 3,724,020 and 3,740,789 cited above relate to such translation mechanisms. However, if reciprocal lateral translation during machine operation is used, there will be end dwell positions on the photoreceptor at whieh the blade stops to reverse in each translation cycle. Thus, in these dwell points the blade is not fully protected by translation from the above-described single point multiple impacts from the same defects on the photoreceptor. Also, as a practical matter, the usable length of a reciprocating cleaning blade edge is limited to the width of the imaging surface.
The present invention provides a solution to the above~described problems by a simple means allowing fully eontinuous blade translation relative to the photoreceptor, and substantially increased effective cleaning blade length without a eorresponding inerease in the cleaning system -~
dimensions, thereby providing an increased effective lifetime for the blade. The present cleaning system also allows - ' eleaning and/or lubrieating of the blade cleaning edge at a eonvenient position spaced away from the photoreceptor.
In accordance with this invention there is provided in eleetrostatographie apparatus, the improvement in the eleaning system for eleaning imaging material from an imaging surface with a eleaning blade eomprising: an endless belt having two eontinuous opposite edges, said edges being adapted to elean said imaging surfaee; support means for eontinous motion of said belt ineluding eontinuously moving ~ - 4 -, ~ 8442 a portion of one said edge of said belt transversely across said imaging surface in cleaning engagement with said imaging surface;
and reversing means for automatically reversing said one edge of said belt with the other said edge of said belt into cleaning engagement with said imaging surface.
! Various doctor or cleaning blade structures are, of course, known in the non-electrostatographic arts. For ~
example, U.S. Patent No. 2,664,792, issued January 5, 1954, -to E.P. Cook discloses pealing paper from a roll by a steel doctor blade band which is wound between reels spaced at each side of the roll, where it is also cleaned and lubricated. Canadian Patent No. 562,364, issued August 26, 1958 to '' `
10~8*42 Howard E. Roscoe teaches removing liquid from a film web with an endless metal band continuously moving transversely the web, guided by grooved supports. The band is supported by pulleys at each side of the web and cleaned by wipers.
Further features and advantages of the present invention pertain to the particular apparatus and functions whereby the above-mentioned aspects of the invention are attained. Accordingly, the invention will be better under-stood by reference to the following description and to the drawings forming a part thereof, which are substantially to scale, wherein:
Fig. 1 is a plan view of an exemplary embodiment of the present cleaning blade system; and Fig. 2 is a cross-sectional view taken along the line 2-2 of Fig. 1.
Referring now to the drawings, Figs. 1 and 2, there is shown therein an exemplary cleaning system 10 in accord-ance with the present invention for cleaning toner from the moving photoreceptive imaging surface 12 of a xerographic drum 14. The photoconductive surface 12 is cleaned by a contacting cleaning blade 16 extending transverse the direction of movement (rotation) of the imaging surface 12~ It may be seen that the blade 16 is in the form of a flexible endless belt having two continuous opposite edges 18 and 20. Both of these edges are adapted to clean the imaging surface 12.
However, only one edge at a time is held against and trans-versely moved across the imaging surface in cleaning engage-ment therewith.
10389~42 The blade or belt 16 here contains a mobius twist in a portion of the belt which is spaced away from the imaging surface. That is, one flight of the blade 16 has a one-half turn twist. This has the effect of turning the belt over and thereby reversing the two blade edges 18 and 20 in each rotation or cycle of the endless blade 16. This provides an automatic reversal in each cycle of the belt movement of the edge of the blade which is in cleaning engagement with the imaging surface. The endless loop form of the belt 16 doubles the effective length of the cleaning blade edge relative to its overall length, and the reversal changes the edges as well.
The blade 16 is rotatably supported at its opposite ends by and between two identical cylindrical pulleys 22 and 24. Preferably the blade 16 is held in tension between these two pulleys. The blade 16 is also supported by an appropriate linear guide 26 in that portion of the belt which is in cleaning engagement with the imaging surface. ~he guide 26 here is an exemplary linear, continuous, sliding support channel in which the edge 20 of the belt (the outside edge of the blade 16) is slidably retained for proper cleaning engagement with the imaging surface. The inside of the channel 26 may, of course, be coated with any suitable lubricant material. Preferably the channel 26 also includes a structure for flexibly deforming the blade 16 against the imaging surface. This is illustrated in Fig. 2, where it may be seen that here there is an extending lip 28 of the chann~l 26 which continuously forcibly engages the rear central ~ `
~038~l~2 portion of the blade 16 to flexibly press the extending edge 18 of the blade against the imaging surface. The channel 26 and the pulleys 22 and 24 together maintain the lower flight of the blade 16 in a constant position (except for its linear motion transverse direction of motion of ~he imaging surface. It will be noted that the only twist in the belt 16 is that in the upper flight of the belt between the two pulleys, i. e.
the flight which lS spaced away from the imaging surface.
The lower (cleaning engagement) flight of the belt is substantially fully planar between the two pulleys.
; One or both the pulleys 22 and 24 may be conventionally driven by an electric motor as shown, or other suitable con-ventional drive means, at the desired blade translation speed.
Since the blade motion is preferably continuous and unidirectional a complex drive mechanism is not required.
With the disclosed structure a cleaning station can be provided for cleaning the edges of the belt at a single small area spaced from the imaging surface. This is exemplified hereby a cleaning brush 30 engaging the edge 20 of the blade 16.
This cleaning brush 20 need only encompass the one edge 20.
Since the edges 18 and 20 reverse in each otation of the belt, both edges can be cleaned by a single small cleaning brush 30 at this one location. It may also be seen that the cleaning brush 30 is (desirably) spaced away from the imaging surface ., ,, . , . ; ,: ~
: i038442 by the full width of the belt. This is enabled by the mobius nature of the blade 16 and its continuous undirectional motion.
The cleaning brush 30-is-located here off to one side of the im-aging surface 12, adjacent the pulley 22. However, it will be appreciated that other locations may be provided which will also allow continual cleaning without any interference or con-tact with the imaging surface. Since the cleaning station may be located at a single point for the entire belt, a simple single point toner removal system (not shown) may also be utilized in connection therewith. Thus, a trough and a~er system extending the full length of the cleaning blade, as utilized in some of the above cited prior art structures is not required.
Remote lubrication of the cleaning blade edges is exemplified here by a stick or bar lubricant applicator 32 for applying a suitable imaging surface lubricant for the blade edges, such as zinc stearate or the like. As shown, this may be applied directly to the cleaning corner edge of the blade edge 18 immediately prior to its engagement with the imaging surface. Other lubricant applicator locations may be utilized, all of which can take advantage of the ability to apply the lubricant at a position spaced away from the imaging surface. Thus, with this arrangement the lubricant can be applied only as needed to only the cleaning blade edge and does not need to be applied over the imaging surface -tself or with the imaging material (toner).
:. ,. :
~Q3~i4~
As may be seen from Fig. 2 the exemplary blade structure 16, shown here in cross section is preferably a thin steel strap central portion or material to which two continuous elastomer material cleaning tips are mounted.
The cleaning edges are preferably made by forming sharp edges on these elastomer tips to engage the imaging surface. This basic preferred structure is described in further detail (but 4 l for ~ single edge blade) in the above cited-U. 5. Patent ~3~a~
~pplications, Serial Numbers ~ 5 and ~J~G~. However, other suitable cleaning blade structures, such as a monolithic band of polyurethane rubber, with or without reinforcing mater-ials, may be utilized.
In conclusion, it may be seen that there has been provided by the above disclosed structure an improved clean ng system in which the cleaning blade can move continuously to avoid any dwell points, and has an increased effective length, for increased blada life and imp_oved cleaning. Al.houyh the exemplary embodiment described herein is presently con-sidered to be preferred, various other modificat~ons or improvements will be apparent to those skilled in the art.
The following claims are intended to cover all such variations and modifications as fall within the true spirit and scope of the invention.
,
Claims (10)
1. In electrostatographic apparatus, the improvement in the cleaning system for cleaning imaging material from an imaging surface with a cleaning blade comprising:
an endless belt having two continuous opposite edges, said edges being adapted to clean said imaging surface;
support means for continuous motion of said belt including continuously moving a portion of one said edge of said belt transversely across said imaging surface in cleaning engagement with said imaging surface;
and reversing means for automatically reversing said one edge of said belt with the other said edge of said belt into cleaning engagement with said imaging surface.
an endless belt having two continuous opposite edges, said edges being adapted to clean said imaging surface;
support means for continuous motion of said belt including continuously moving a portion of one said edge of said belt transversely across said imaging surface in cleaning engagement with said imaging surface;
and reversing means for automatically reversing said one edge of said belt with the other said edge of said belt into cleaning engagement with said imaging surface.
2. The apparatus of Claim 1 wherein said reversing means comprises a mobius twist in said belt spaced from said imaging surface.
3. The apparatus of Claim 1 including linear guide means parallel to said imaging surface for guiding a portion of said belt linearly across said imaging surface in engagement therewith.
4. The apparatus of Claim 2 including linear guide means parallel to said imaging surface for guiding a portion of said belt linearly across said imaging surface in engagement therewith.
5. The apparatus of Claim 1 including cleaning means for cleaning one said edge of said belt at a position spaced from said imaging surface.
6. The apparatus of Claim 1 including lubricating means for lubricating one said edge of said belt at a position spaced from said imaging surface.
7. The apparatus of Claim 1 wherein said support means further includes two parallel pulleys located respectively at opposite sides of said imaging surface, said belt being mounted on and extending between said pulleys.
8. The apparatus of Claim 1 wherein said belt has a thin metal central portion and said edges comprise an elastomer material mounted to said central portion.
9. The apparatus of Claim 3 wherein said linear guide means is a continuous sliding support channel and includes means for flexibly deforming said belt against said imaging surface.
10. The apparatus of Claim 5 wherein said cleaning means engages the edge of said belt opposite from the edge engaging the imaging surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00415270A US3847480A (en) | 1973-11-12 | 1973-11-12 | Continuous blade cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1038442A true CA1038442A (en) | 1978-09-12 |
Family
ID=23645034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA207,340A Expired CA1038442A (en) | 1973-11-12 | 1974-08-19 | Continuous blade cleaner |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3847480A (en) |
| CA (1) | CA1038442A (en) |
| GB (1) | GB1482422A (en) |
| NL (1) | NL7413732A (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2447238A1 (en) * | 1973-10-04 | 1975-04-10 | Alexander Rizo Rangabe | DEVICE FOR CLEANING A RECORD |
| CA1062325A (en) * | 1975-02-06 | 1979-09-11 | Savin Business Machines Corporation | Photoconductor drum cleaning apparatus |
| US4111545A (en) * | 1975-02-06 | 1978-09-05 | Xerox Corporation | Vibrating blade cleaner |
| US4158498A (en) * | 1976-06-22 | 1979-06-19 | Rank Xerox Limited | Blade cleaning system for a reproducing apparatus |
| US4585510A (en) * | 1982-09-10 | 1986-04-29 | Mario Monaco | Fusing machine |
| US4457615A (en) * | 1982-11-01 | 1984-07-03 | Xerox Corporation | Combined charge/cleaning brush for use in a xerographic copier |
| US4650311A (en) * | 1984-10-22 | 1987-03-17 | Ricoh Company, Ltd. | Compact cleaning system for electrophotographic copying apparatus utilizing electrostatically active belt |
| US4660504A (en) * | 1985-05-20 | 1987-04-28 | Eastman Kodak Company | Tensionable skive for magnetic brush application |
| US4691406A (en) * | 1986-09-02 | 1987-09-08 | Thermo Electron-Web Systems, Inc. | Doctoring apparatus |
| US4827311A (en) * | 1988-01-04 | 1989-05-02 | Eastman Kodak Company | Apparatus for cleaning particulate matter from a moving web |
| JP2852442B2 (en) * | 1989-11-15 | 1999-02-03 | 株式会社リコー | Photoreceptor belt cleaning device |
| US5007132A (en) * | 1990-06-07 | 1991-04-16 | Thermo-Electron Web Systems, Inc. | Hydraulic drive for pull through doctor blade transfer system |
| US5267787A (en) * | 1990-12-01 | 1993-12-07 | Paul Troester Maschinenfabrik | Screw extruder with feed roller |
| US5218412A (en) * | 1991-12-09 | 1993-06-08 | Xerox Corporation | 180 degree rotating cleaning blade holder |
| US5241350A (en) * | 1992-08-31 | 1993-08-31 | Xerox Corporation | Blade holder with end clamps |
| US5353106A (en) * | 1992-11-03 | 1994-10-04 | Xerox Corporation | Pressure roll cleaner |
| DE102005049505A1 (en) * | 2005-10-13 | 2007-04-19 | Eastman Kodak Co. | Device for cleaning transport belt for printed material has at least one element with wiping motion with at least partial vectorial component transverse to extent and direction of motion of transport belt |
| JP2010184447A (en) * | 2009-02-12 | 2010-08-26 | Sony Corp | Liquid discharge apparatus and method of controlling liquid discharge apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3781107A (en) * | 1972-08-09 | 1973-12-25 | Xerox Corp | Cleaning apparatus |
-
1973
- 1973-11-12 US US00415270A patent/US3847480A/en not_active Expired - Lifetime
-
1974
- 1974-08-19 CA CA207,340A patent/CA1038442A/en not_active Expired
- 1974-10-18 NL NL7413732A patent/NL7413732A/en unknown
- 1974-11-05 GB GB47863/74A patent/GB1482422A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7413732A (en) | 1975-01-31 |
| US3847480A (en) | 1974-11-12 |
| GB1482422A (en) | 1977-08-10 |
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