US5401111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for cleaning data bearing cards
Assignee: Entrust Corp
•
Filing: 1993-01-17
•
Granted: 1995-03-28
•
Expires: 2013-01-17
Abstract
Abstract An apparatus and method are described for removing particulate matter from one or more surfaces of a workpiece, such as a credit card blank, prior to printing a graphic design thereon. The apparatus includes a pair of cleaning rollers which engage both sides of the card, the cleaning rollers having an adhesive coating for removing loose particulate matter from the surfaces of the card. The apparatus also includes a stripper system for stripping collected particulate matter away from the cleaning rollers after a predetermined number of cards have been cleaned.
Inventors
- 👤 Richard C. Nubson
- 👤 Glenn R. Carney
- 👤 Luc DeBleeckere
- 👤 Ronald B. Howes
- 👤 Milo B. Squires
- 👤 David E. Wickstrom
- 👤 Dennis J. Warwick
- 👤 Benjamin H. Sannel
- 👤 Gretchen J. Moeller
- 👤 Paul R. Caron
- 👤 Harold D. Schofield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:45
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/40; B42D25/48; B42D25/485; B41; B41J; B41J2/00; B41J13/00; B41J13/10; B41J13/12; B41J2/315; B41J3/00; B41J3/407; B42D25/405; B42D25/425; B42D25/45; B42D25/465; B42D25/47; G; G06; G06K; G06K1/00; G06K1/12; G06K1/125; G06K1/126; G06K19/00; G06K19/06; G06K19/08; G06K19/10; G06K19/12
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
136 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least cleaning roller, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; feeding means engaging the workpiece prior to engagement of the workpiece by said cleaning means for feeding the workpiece to said cleaning means; conveying means for engaging and conveying the workpiece away from said cleaning means, said conveying means continuing to engage and convey the workpiece after the workpiece leaves said cleaning means; and means for removing collected particles from said cleaning means
Claim 2
Independent Claim
136 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least cleaning roller, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; feeding means engaging the workpiece prior to engagement of the workpiece by said cleaning means for feeding the workpiece to said cleaning means; conveying means for engaging and conveying the workpiece away from said cleaning means, said conveying means continuing to engage and convey the workpiece after the workpiece leaves said cleaning means; and means for removing collected particles from said cleaning means
Claim 3
Dependent Claim
31 words
Apparatus according to claim 1, further comprising controlling means for sensing and regulating the operation of at least one of said cleaning means, said feeding means and said particle removing means.
Claim 4
Dependent Claim
32 words
Apparatus according to claim 2, wherein said controlling means comprises means for detecting a workpiece prior to said cleaning means and for counting the number of workpieces passing through said detecting means.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 1, wherein said feeding means comprises first and second work feed rollers; and means for turning said work feed rollers.
Claim 6
Dependent Claim
36 words
Apparatus according to claim 4, wherein said turning means comprises a stepper motor, means for connecting said stepper motor to said first work feed roller, and means for synchronizing said first and second work feed rollers.
Claim 7
Dependent Claim
36 words
Apparatus according to claim 5, wherein said synchronizing means comprises a first gear on said first work feed roller and a second gear on said second work feed roller which is meshed with said first gear.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 1, wherein said at least one cleaning roller has an outer surface for engaging the surface of the workpiece to be cleaned.
Claim 9
Dependent Claim
18 words
Apparatus according to claim 7, wherein said attracting means comprises an adhesive layer formed on said outer surface.
Claim 10
Dependent Claim
18 words
Apparatus according to claim 7, wherein said at least one cleaning roller is formed of a resilient material.
Claim 11
Dependent Claim
20 words
Apparatus according to claim 9, wherein said resilient material is a butyl rubber having a shore durometer value of 25-30.
Claim 12
Dependent Claim
15 words
Apparatus according to claim 7, wherein said cleaning means comprises two of said cleaning rollers.
Claim 13
Dependent Claim
21 words
Apparatus according to claim 11, wherein said two cleaning rollers are opposed so as to engage opposite surfaces of the workpiece.
Claim 14
Dependent Claim
22 words
Apparatus according to claim 7, further comprising means for driving said at least one cleaning roller, thereby aiding propulsion of the workpiece.
Claim 15
Dependent Claim
23 words
Apparatus according to claim 13, wherein said driving means drives said at least one cleaning roller in timed relationship to said feeding means.
Claim 16
Dependent Claim
15 words
Apparatus according to claim 14, wherein said driving means is powered by said feeding means.
Claim 17
Dependent Claim
53 words
Apparatus according to claim 7, wherein said particle removing means comprises a stripping element having stripping means thereon for stripping particles from said at least one cleaning roller, and means for causing engagement at adjustably selected intervals between said at least one cleaning roller and said stripping means during operation of the apparatus.
Claim 18
Dependent Claim
33 words
Apparatus according to claim 16, wherein said stripping element comprises a stripping tape having an adhesive surface thereon for stripping particles from said outer engaging surface of said at least one cleaning roller.
Claim 19
Dependent Claim
28 words
Apparatus according to claim 17, wherein said attracting means comprises an adhesive layer formed on said outer surface, said adhesive surface being more adhesive than said adhesive layer.
Claim 20
Dependent Claim
25 words
Apparatus according to claim 17, wherein said stripping element further comprises first means for storing unused stripping tape and second means for storing used tape.
Claim 21
Dependent Claim
36 words
Apparatus according to claim 19, wherein said first and second storing means comprise, respectively, a first stripper tape spindle and second stripper tape spindle for rotatably supporting said unused stripping tape and said used stripping tape.
Claim 22
Dependent Claim
28 words
Apparatus according to claim 19, wherein said stripping element further comprises a stripper roller about which said stripping tape is wound between said first and second storing means.
Claim 23
Dependent Claim
33 words
Apparatus according to claim 21, wherein said stripping element further comprises stripper guide means for guiding said stripping tape from said first storing means to said stripper roller to said second storing means
Claim 24
Dependent Claim
60 words
Apparatus according to claim 22, wherein said stripper guide means comprises a first stripper guide roller for guiding said stripper tape between said first storing means and said stripper roller; a second stripper guide roller for guiding said stripper tape between said stripper roller and said second storing means; and means for synchronizing said first and second stripper guide rollers.
Claim 25
Dependent Claim
26 words
Apparatus according to claim 23, wherein the diameter of said second stripper guide roller is slightly greater than the diameter of said first stripper guide roller.
Claim 26
Dependent Claim
45 words
Apparatus according to claim 23, wherein said synchronizing means is arranged so that said second stripper guide roller is to have a slightly higher surface tangential speed than said first stripper guide roller, whereby tension is maintained in said stripper tape around said stripper roller.
Claim 27
Independent Claim
346 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least one engaging surface adapted for engaging the surface of the workpiece to be cleaned, said cleaning means comprises at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; feeding means engaging the workpiece prior to engagement of the workpiece by said cleaning means for feeding the workpiece to said cleaning means; conveying means for engaging and conveying the workpiece away from said cleaning means, said conveying means continuing to engage and convey the workpiece after the workpiece leaves said cleaning means; and means for removing collected particles from said cleaning means, said particle removing means comprises a stripping element having stripping means thereon for stripping particles from said at least one cleaning roller, and means for causing engagement at adjustably selected intervals between said at least one cleaning roller and stripping means during operation of the apparatus, wherein said stripping element comprises a stripping tape having an adhesive surface thereon for stripping particles from said outer engaging surface of said at least one cleaning roller, said stripping element further comprises first, means for storing unused stripping tape and second, means for storing used tape, said stripping element further comprises a stripper roller about which said stripping tape is wound between said first and second storing means, wherein said means for causing engagement between said at least one cleaning roller and said stripping means comprises turret means having said at least one cleaning roller mounted thereon and being rotatably mounted on a central turret axis for displacing said at least one cleaning roller from a workpiece cleaning position to at least one stripping position so that said at lease one cleaning roller is engageable by said stripping tape at the point said stripping tape winds around said stripper roller.
Claim 28
Independent Claim
346 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least one engaging surface adapted for engaging the surface of the workpiece to be cleaned, said cleaning means comprises at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; feeding means engaging the workpiece prior to engagement of the workpiece by said cleaning means for feeding the workpiece to said cleaning means; conveying means for engaging and conveying the workpiece away from said cleaning means, said conveying means continuing to engage and convey the workpiece after the workpiece leaves said cleaning means; and means for removing collected particles from said cleaning means, said particle removing means comprises a stripping element having stripping means thereon for stripping particles from said at least one cleaning roller, and means for causing engagement at adjustably selected intervals between said at least one cleaning roller and stripping means during operation of the apparatus, wherein said stripping element comprises a stripping tape having an adhesive surface thereon for stripping particles from said outer engaging surface of said at least one cleaning roller, said stripping element further comprises first, means for storing unused stripping tape and second, means for storing used tape, said stripping element further comprises a stripper roller about which said stripping tape is wound between said first and second storing means, wherein said means for causing engagement between said at least one cleaning roller and said stripping means comprises turret means having said at least one cleaning roller mounted thereon and being rotatably mounted on a central turret axis for displacing said at least one cleaning roller from a workpiece cleaning position to at least one stripping position so that said at lease one cleaning roller is engageable by said stripping tape at the point said stripping tape winds around said stripper roller.
Claim 29
Dependent Claim
59 words
Apparatus according to claim 26, wherein said turret means comprises a turret body upon which said at least one cleaning roller is mounted, and reversible means for rotating said turret body at adjustably selected intervals to displace said cleaning roller from said workpiece cleaning position to said stripping position and from said stripping position to said workpiece cleaning position.
Claim 30
Dependent Claim
24 words
Apparatus according to claim 27, wherein said reversible means comprises a stepper motor and means for connecting said stepper motor to said turret body.
Claim 31
Dependent Claim
46 words
Apparatus according to claim 27, further comprising gear means on said turret body for engaging said feeding means for driving said at least one cleaning roller in timed relationship with said feeding means when said at least one cleaning roller is in said workpiece cleaning position.
Claim 32
Dependent Claim
43 words
Apparatus according to claim 29, wherein said reversible means is further for disengaging said gear means from said feeding means when said turret means is rotated to displace said at least one cleaning roller from said workpiece cleaning position to said stripping position.
Claim 33
Dependent Claim
27 words
Apparatus according to claim 27, further comprising controlling means for sensing and regulating the operation of said cleaning means, said feeding means and said particle removing means.
Claim 34
Dependent Claim
19 words
Apparatus according to claim 31, wherein said controlling means comprises means for monitoring the position of said turret body.
Claim 35
Dependent Claim
35 words
Apparatus according to claim 31, wherein said controlling means comprises means for detecting a workpiece prior to said at least one cleaning roller and for counting the number of workpieces passing through said detecting means.
Claim 36
Dependent Claim
58 words
Apparatus according to claim 33, wherein said controlling means is further for rotating said turret body to displace said at least one cleaning roller from said workpiece cleaning position to said stripping position to cause said at least one cleaning roller to engage said stripper tape when a predetermined number of workpieces have passed through said detecting means.
Claim 37
Dependent Claim
95 words
Apparatus according to claim 34, wherein said controlling means is further for rotating said turret body to return said at least one cleaning roller to said cleaning position after said at least one cleaning roller engages said stripper tape, and for rotating said turret body to displace a second of said at least one cleaning roller from said cleaning position to a second stripping position to cause said second of said at least one cleaning roller to engage said stripper tape when a second predetermined number of workpieces have been counted by said detecting means.
Claim 38
Dependent Claim
48 words
Apparatus according to claim 35, wherein said controlling means includes means for sensing motion of said first storing means and means for discontinuing operation of the apparatus if no motion is sensed while one of said at least one cleaning roller is in contact with the stripper tape.
Claim 39
Independent Claim
136 words
A method for removing loose particles from at least one surface of a workpiece at a cleaning station prior to printing on the surface by a printer, comprising: (a) detecting the presence of a workpiece before the workpiece reaches the cleaning station; (b) feeding the workpiece into the cleaning station; (c) engaging the surface of the workpiece to be cleaned with an adhesive particle attracting element; (d) conveying the workpiece from the cleaning station; (e) determining the total number of workpieces that have been cleaned responsive to said detecting step; and (f) removing particles that have collected on the adhesive particle attracting element by moving the adhesive particle element from a workpiece cleaning position to a particle removal position distinct from the workpiece cleaning position whenever the total number of workpieces cleaned exceeds a predetermined number.
Claim 40
Independent Claim
136 words
A method for removing loose particles from at least one surface of a workpiece at a cleaning station prior to printing on the surface by a printer, comprising: (a) detecting the presence of a workpiece before the workpiece reaches the cleaning station; (b) feeding the workpiece into the cleaning station; (c) engaging the surface of the workpiece to be cleaned with an adhesive particle attracting element; (d) conveying the workpiece from the cleaning station; (e) determining the total number of workpieces that have been cleaned responsive to said detecting step; and (f) removing particles that have collected on the adhesive particle attracting element by moving the adhesive particle element from a workpiece cleaning position to a particle removal position distinct from the workpiece cleaning position whenever the total number of workpieces cleaned exceeds a predetermined number.
Claim 41
Independent Claim
176 words
A method for removing loose particles from at least one surface of a workpiece at a cleaning station prior to printing on the surface by a printer, comprising: (a) detecting the presence of a workpiece before the workpiece reaches the cleaning station; (b) feeding the workpiece into the cleaning station; (c) engaging the surface of the workpiece to be cleaned with an adhesive particle attracting element, wherein said engaging step includes engaging two opposite surfaces of the workpiece with two particle attracting elements comprising a pair of adhesive cleaning rollers mounted on a turret which is constructed to rotate about a central axis, and wherein said engaging step is performed by passing the workpiece the adhesive cleaning rollers when the cleaning rollers are in a workpiece cleaning position; (d) conveying the workpiece from the cleaning station; (e) determining the total number of workpieces that have been cleaned responsive to said detecting step; and (f) removing particles that have collected on the adhesive particle attracting element whenever the total number of workpieces cleaned exceeds a predetermined number.
Claim 42
Independent Claim
176 words
A method for removing loose particles from at least one surface of a workpiece at a cleaning station prior to printing on the surface by a printer, comprising: (a) detecting the presence of a workpiece before the workpiece reaches the cleaning station; (b) feeding the workpiece into the cleaning station; (c) engaging the surface of the workpiece to be cleaned with an adhesive particle attracting element, wherein said engaging step includes engaging two opposite surfaces of the workpiece with two particle attracting elements comprising a pair of adhesive cleaning rollers mounted on a turret which is constructed to rotate about a central axis, and wherein said engaging step is performed by passing the workpiece the adhesive cleaning rollers when the cleaning rollers are in a workpiece cleaning position; (d) conveying the workpiece from the cleaning station; (e) determining the total number of workpieces that have been cleaned responsive to said detecting step; and (f) removing particles that have collected on the adhesive particle attracting element whenever the total number of workpieces cleaned exceeds a predetermined number.
Claim 43
Dependent Claim
65 words
A method according to claim 38, wherein said particle removing step is performed by an adhesive stripping tape having a stripping surface that is more adhesive than the surface of the cleaning rollers, and said particle removing step comprises contacting the surface of one of the pair of cleaning rollers with the stripping surface when the cleaning rollers are in a cleaning roller stripping position.
Claim 44
Dependent Claim
36 words
A method according to claim 39, wherein said contacting step is effected by rotating the turret about the central axis such that the cleaning rollers are displaced from the workpiece cleaning position to the stripping position.
Claim 45
Dependent Claim
36 words
A method according to claim 40, wherein the turret is rotated approximately thirty degrees in a counterclockwise direction to displace the cleaning rollers from the cleaning position to the stripping position to effect said contacting step.
Claim 46
Dependent Claim
25 words
A method according to claim 41, wherein said particle removing step further comprises rotating the turret to return the cleaning rollers to the cleaning position.
Claim 47
Dependent Claim
54 words
A method according to claim 42, wherein said particle removing step further comprises rotating the turret approximately one hundred and fifty degrees in a clockwise direction to displace the cleaning rollers from the cleaning position to a second stripping position so that a second of the pair of cleaning rollers contacts the stripping tape.
Claim 48
Dependent Claim
25 words
A method according to claim 43, wherein said particle removing step further comprises rotating the turret to return the cleaning rollers to the cleaning position.
Claim 49
Independent Claim
108 words
An apparatus for removing loose particles from at least one surface of a workpiece, comprising: cleaning means positionable in a workpiece cleaning position having at least one cleaning roller for attracting loose particles from the surface of the workpiece to be cleaned when said cleaning means is in said workpiece cleaning position; feeding means for feeding a workpiece to said cleaning means; stripping means for removing collected particles from said cleaning means when said cleaning means is in a cleaning means stripping position; and means for displacing said cleaning means alternatively between said workpiece cleaning position and said cleaning means stripping position distinct from the workpiece cleaning position.
Claim 50
Independent Claim
108 words
An apparatus for removing loose particles from at least one surface of a workpiece, comprising: cleaning means positionable in a workpiece cleaning position having at least one cleaning roller for attracting loose particles from the surface of the workpiece to be cleaned when said cleaning means is in said workpiece cleaning position; feeding means for feeding a workpiece to said cleaning means; stripping means for removing collected particles from said cleaning means when said cleaning means is in a cleaning means stripping position; and means for displacing said cleaning means alternatively between said workpiece cleaning position and said cleaning means stripping position distinct from the workpiece cleaning position.
Claim 51
Independent Claim
126 words
An apparatus for removing loose particles from at least one surface of a workpiece, comprising: cleaning means positionable in a workpiece cleaning position having at least one adhesive surface for attracting loose particles from the surface of the workpiece to be cleaned when said cleaning means is in said workpiece cleaning position, wherein said cleaning means comprises at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; feeding means for feeding a workpiece to said cleaning means; stripping means for removing collected particles from said cleaning means when said cleaning means is in a cleaning means stripping position; and means for displacing said cleaning means alternatively between said workpiece cleaning position and said cleaning means stripping position.
Claim 52
Independent Claim
126 words
An apparatus for removing loose particles from at least one surface of a workpiece, comprising: cleaning means positionable in a workpiece cleaning position having at least one adhesive surface for attracting loose particles from the surface of the workpiece to be cleaned when said cleaning means is in said workpiece cleaning position, wherein said cleaning means comprises at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; feeding means for feeding a workpiece to said cleaning means; stripping means for removing collected particles from said cleaning means when said cleaning means is in a cleaning means stripping position; and means for displacing said cleaning means alternatively between said workpiece cleaning position and said cleaning means stripping position.
Claim 53
Dependent Claim
51 words
Apparatus according to claim 46, wherein said displacing means comprises a turret body rotatably disposed on a central turret axis and having said at least one cleaning roller rotatably mounted thereon such that the axis of rotation of said at least one cleaning roller is distinct from said central turret axis.
Claim 54
Independent Claim
168 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means comprising at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said outer surface of said at least one cleaning roller for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for converying the workpiece away from said cleaning means; and means for removing collected particles from said cleaning means comprising a windable stripping means for stripping elements thereon for stripping particles from said at least one cleaning roller, and means for causing engagement at adjustably selected intervals between said at least one cleaning roller and said stripping means during operation of the apparatus.
Claim 55
Independent Claim
168 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means comprising at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said outer surface of said at least one cleaning roller for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for converying the workpiece away from said cleaning means; and means for removing collected particles from said cleaning means comprising a windable stripping means for stripping elements thereon for stripping particles from said at least one cleaning roller, and means for causing engagement at adjustably selected intervals between said at least one cleaning roller and said stripping means during operation of the apparatus.
Claim 56
Independent Claim
144 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least one engaging surface adapted for engaging the surface of the workpiece to be cleaned, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for conveying the workpiece away from said cleaning means; means for detecting a workpiece and for counting the number of workpieces passing through said cleaning means; and means for removing collected particles from said cleaning means when a predetermined number of workpieces have been detected by said detecting means
Claim 57
Independent Claim
144 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means having at least one engaging surface adapted for engaging the surface of the workpiece to be cleaned, the cleaning means being movable between a workpiece cleaning position and a cleaning means stripping position distinct from the workpiece cleaning position; means on said engaging surface for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for conveying the workpiece away from said cleaning means; means for detecting a workpiece and for counting the number of workpieces passing through said cleaning means; and means for removing collected particles from said cleaning means when a predetermined number of workpieces have been detected by said detecting means
Claim 58
Independent Claim
137 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means comprising at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; means on said outer surface of said at least one cleaning roller for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for conveying the workpiece away from said cleaning means; and means for removing collected particles from said cleaning means comprising a stripping means for stripping particles from said at least one cleaning roller, said means for removing particles further comprising rotatable means for supporting said stripping means for said cleaning roller to bias thereagainst.
Claim 59
Independent Claim
137 words
An apparatus for removing loose particles from at least one surface of a workpiece prior to printing on the surface by a printer, comprising: cleaning means comprising at least one cleaning roller having an outer surface for engaging the surface of the workpiece to be cleaned; means on said outer surface of said at least one cleaning roller for adhesively attracting loose particles from the corresponding surface of the workpiece to be cleaned; means for feeding a workpiece to said cleaning means; means for conveying the workpiece away from said cleaning means; and means for removing collected particles from said cleaning means comprising a stripping means for stripping particles from said at least one cleaning roller, said means for removing particles further comprising rotatable means for supporting said stripping means for said cleaning roller to bias thereagainst.
References Cited (Backward Citations)
US2919129A
Cited
US3382130A
Cited
US3510930A
Cited
US3800349A
Cited
US3877371A
Cited
US3857560A
Cited
US4009047A
Cited
US4006507A
Cited
US4018555A
Cited
US4082037A
Cited
US4272202A
Cited
US4321286A
Cited
JPS5613193A
Cited
US4271476A
Cited
JPS5660268A
Cited
US4289666A
Cited
JPS5699679A
Cited
US4343837A
Cited
JPS56144172A
Cited
US4415908A
Cited
US4329075A
Cited
GB2080736A
Cited
JPS5774181A
Cited
JPS57150588A
Cited
US4464669A
Cited
JPS587387A
Cited
JPS5814792A
Cited
JPS5842471A
Cited
JPS5853456A
Cited
US4591876A
Cited
US4551813A
Cited
US4560980A
Cited
US4636810A
Cited
US4467335A
Cited
US4587530A
Cited
US4490870A
Cited
US4639744A
Cited
US4590484A
Cited
JPS59133146A
Cited
US4651164A
Cited
US4536774A
Cited
JPS58191175A
Cited
JPS5936276A
Cited
JPS59222374A
Cited
JPS602391A
Cited
JPS5926774A
Cited
JPS6019550A
Cited
US4675746A
Cited
US4629306A
Cited
JPS6042077A
Cited
US4577198A
Cited
JPS6054872A
Cited
US4519600A
Cited
US4590487A
Cited
JPS6087071A
Cited
US4545069A
Cited
JPS6099669A
Cited
US4818126A
Cited
JPS60165281A
Cited
US4650350A
Cited
US4633269A
Cited
JPS60192689A
Cited
US4663734A
Cited
US4595935A
Cited
JPS6166673A
Cited
JPS6179688A
Cited
US4563691A
Cited
EP0189770A2
Cited
JPS61181656A
Cited
JPS61219681A
Cited
US4651166A
Cited
US4573058A
Cited
US4590488A
Cited
US4764041A
Cited
JPS61274974A
Cited
JPS61274971A
Cited
US4695850A
Cited
JPS6277978A
Cited
JPS6283166A
Cited
US4723132A
Cited
US4781115A
Cited
US4747716A
Cited
JPS62202780A
Cited
JPS62208957A
Cited
US4755069A
Cited
US4776714A
Cited
US4712113A
Cited
JPS6335363A
Cited
JPS6356478A
Cited
WO1988001941A1
Cited
US4896977A
Cited
US4855756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |