Patent US4743937A successfully refreshed from Google Patents.
US4743937A
Expired / Lapsed
US
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Apparatus for charging toner particles
Assignee: Xerox Corp
•
Filing: 1983-12-12
•
Granted: 1988-05-10
•
Expires: 2003-12-12
Abstract
Abstract This invention is generally directed to an apparatus for charging toner particles comprised in operative relationship of a means for charging insulating toner particles and a means for transporting insulating toner particles, said means for charging and said means for transporting being charged to a predetermined potential, which apparatus further includes therein a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles. The brush device can also function as a charging source for the toner particles, and as a cleaning system. More specifically in one embodiment the present invention is directed to an apparatus for simultaneously metering, charging and transporting non-magnetic insulating toner particles comprising in operative relationship a metering roll means, an optional trim blade means for said metering roll means, a toner supply reservoir means containing therein weakly charged insulating toner particles possessing about an equal number of positive and negative charges thereon, a transporting hard roll or donor belt means, a triboelectrically active coating contained on said transporting means, a drive roll means, an idler means, a tensioning means, an imaging means, a voltage source means for the metering roll means, a voltage source means for the drive roll means, and the transporting means, said metering roll means moving in a direction opposite to the direction of movement of the transporting means, and wherein the apparatus further includes a moving brush means contained in the toner supply reservoir which brush means contains bristles thereon, wherein the brush transports toner particles to a charging nip situated between the metering roll means and the transporting means.
Inventors
- 👤 Robert G. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
B; B82; B82Y; B82Y15/00; G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0806; G03G2215/00; G03G2215/06; G03G2215/0602; G03G2215/0604; G03G2215/0614; G03G2215/0634; G03G2215/0636
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
205 words
An apparatus for charging toner particles comprising, in operative relationship, a means for charging insulating toner particles and a means for transporting insulating toner particles, said means for charging and said means for transporting being charged to a predetermined potential, which apparatus further includes therein a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, wherein the means for charging contains a triboelectrically active coating thereon, and the insulating toner particles are charged to a positive or negative polarity, the charging being accomplished in a charging zone situated between the means for charging and the means for transporting; wherein the means for charging is moving in a rotational direction opposite to the rotational direction of movement of the means for transporting, and the brush means is moving in a rotational direction opposite to the direction of movement of the means for charging.
Claim 2
Independent Claim
205 words
An apparatus for charging toner particles comprising, in operative relationship, a means for charging insulating toner particles and a means for transporting insulating toner particles, said means for charging and said means for transporting being charged to a predetermined potential, which apparatus further includes therein a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, wherein the means for charging contains a triboelectrically active coating thereon, and the insulating toner particles are charged to a positive or negative polarity, the charging being accomplished in a charging zone situated between the means for charging and the means for transporting; wherein the means for charging is moving in a rotational direction opposite to the rotational direction of movement of the means for transporting, and the brush means is moving in a rotational direction opposite to the direction of movement of the means for charging.
Claim 3
Dependent Claim
18 words
An apparatus in accordance with claim 1 wherein wherein triboelectrically active coating is contained on the transporting means.
Claim 4
Dependent Claim
17 words
An apparatus in accordance with claim 1 wherein the means for transporting is a hard roll means.
Claim 5
Dependent Claim
28 words
An apparatus in accordance with claim 1 wherein the means for transporting is a belt deflected in an arc of from about 10 degrees to about 50 degrees.
Claim 6
Dependent Claim
27 words
An apparatus in accordance with claim 1 further including therein a means for imaging, and wherein the charged insulating toner particles are deposited thereon in image configuration.
Claim 7
Dependent Claim
16 words
An apparatus in accordance with claim 5 wherein the means for imaging is flexible or rigid.
Claim 8
Dependent Claim
36 words
An apparatus in accordance with claim 5 wherein the imaging means is comprised of a selenium photoconductor, or a layered organic photoconductive composition comprised of a substrate, a charge transport layer and a charge generating layer.
Claim 9
Independent Claim
188 words
An apparatus for simultaneously metering, charging and transporting non-magnetic insulating toner particles comprising in operative relationship a metering roll means, an optional trim blade means for said metering roll means, a toner supply reservoir means containing therein weakly charged insulating toner particles possessing about an equal number of positive and negative charges thereon, a transporting means, a triboelectrically active coating contained on said transporting means, a drive roll means, an idler means, a tensioning means, an imaging means, a voltage source means for the drive roll means, and the transporting means, said metering roll means moving in a rotational direction opposite to the direction of movement of the transporting means, which apparatus further includes therein a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 10
Independent Claim
188 words
An apparatus for simultaneously metering, charging and transporting non-magnetic insulating toner particles comprising in operative relationship a metering roll means, an optional trim blade means for said metering roll means, a toner supply reservoir means containing therein weakly charged insulating toner particles possessing about an equal number of positive and negative charges thereon, a transporting means, a triboelectrically active coating contained on said transporting means, a drive roll means, an idler means, a tensioning means, an imaging means, a voltage source means for the drive roll means, and the transporting means, said metering roll means moving in a rotational direction opposite to the direction of movement of the transporting means, which apparatus further includes therein a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 11
Dependent Claim
18 words
An apparatus in accordance with claim 8 wherein the triboelectrically active coating is contained on the charging means.
Claim 12
Dependent Claim
27 words
An apparatus in accordance with claim 8 wherein the brush means is moving in a direction opposite to the direction of movement of the means for charging.
Claim 13
Dependent Claim
37 words
An apparatus in accordance with claim 8 wherein a voltage source means is connected to the brush means, and wherein a voltage of from about zero volts to about 300 volts are applied to the brush bristles.
Claim 14
Dependent Claim
39 words
An apparatus in accordance with claim 8 wherein the transport donor belt means traverses a path defined by the drive roll means and the idler roll means, causing the charged insulating toner particles to contact the imaging member means.
Claim 15
Dependent Claim
19 words
An apparatus in accordance with claim 8 wherein the imaging member means is a rigid or flexible imaging member.
Claim 16
Dependent Claim
42 words
An apparatus in accordance with claim 13 wherein the imaging member is comprised of amorphous selenium or amorphous selenium alloys; or wherein the imaging member is a layered photoresponsive device comprised of a substrate, a photogenerating layer and a charge transport layer.
Claim 17
Dependent Claim
33 words
An apparatus in accordance with claim 14 wherein the charge generating layer is vanadyl phthalocyanine or trigonal selenium, and the transport layer is comprised of diamime molecules dispersed in an inactive resinous binder.
Claim 18
Dependent Claim
83 words
An apparatus in accordance with claim 8 wherein there is applied to the metering roll means a voltage of from about +25 volts to about +200 volts, or from about -25 volts to about -200 volts; there is applied to the drive roll means a voltage of from about +75 volts to about +450 volts, or from about -75 volts to about -450 volts, and there is apaplied to the brush device a voltage of from about zero volts to about 300 volts.
Claim 19
Dependent Claim
30 words
An apparatus in accordance with claim 8 wherein the triboelectrically active coating is comprised of an electronegative or electropositive material in a thickness of 0.1 mils to about 5 mils.
Claim 20
Dependent Claim
50 words
An apparatus in accordance with claim 17 wherein the electronegative material is selected from the group consisting of trifluorochloroethylene and vinylchloride copolymers, polyvinylidene fluorides, polytetrachlorofluoroethylenes, perfluoroalkorylated ethylenes, polytetrachluoroalkoxy ethylenes, and polyvinylchlorides; and the electropositive materials are selected from the group consisting of polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 21
Dependent Claim
14 words
An apparatus in accordance with claim 8 wherein the transport donor belt is textured.
Claim 22
Independent Claim
147 words
An apparatus for metering and charging non-magnetic insulating toner particles comprising in operative relationship a moving metering roll means, a compliant transport donor roll means containing thereon a triboelectrically active coating, a toner supply reservoir means containing therein weakly charged toner particles, a voltage source means for the compliant roller means, wherein toner particles are charged in a zone encompassed by said metering roll means and said compliant roll means, which apparatus further includes a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexbile bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 23
Independent Claim
147 words
An apparatus for metering and charging non-magnetic insulating toner particles comprising in operative relationship a moving metering roll means, a compliant transport donor roll means containing thereon a triboelectrically active coating, a toner supply reservoir means containing therein weakly charged toner particles, a voltage source means for the compliant roller means, wherein toner particles are charged in a zone encompassed by said metering roll means and said compliant roll means, which apparatus further includes a brush device for delivering toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexbile bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 24
Dependent Claim
35 words
An apparatus in accordance with claim 20 wherein the brush device is situated in the toner supply reservoir, and is moving in a direction opposite to the direction of movement of the metering roll means.
Claim 25
Dependent Claim
29 words
An apparatus in accordance with claim 20 wherein said metering roll means is moving in a rotational direction opposite to the direction of movement of said compliant roll means.
Claim 26
Dependent Claim
15 words
An apparatus in accordance with claim 22 wherein the metering roll is a compliant roll.
Claim 27
Dependent Claim
18 words
An apparatus in accordance with claim 22 wherein positive or negative charges are applied to the toner particles.
Claim 28
Dependent Claim
15 words
An apparatus in accordance with claim 22 wherein the imaging member is flexible or rigid.
Claim 29
Dependent Claim
37 words
An apparatus in accordance with claim 25 wherein the imaging member is comprised on selenium deposited on the flexible substrate or an overcoated photoresponsive device comprised of a substrate, a photogenerating layer, and an amine transport layer.
Claim 30
Dependent Claim
83 words
An apparatus in accordance with claim 22 wherein there is applied to the metering roll means a voltage of from about +25 volts to about +200 volts, or from about -25 volts to about -200 volts; there is applied to the drive roll means a voltage of from about +75 volts to about +450 volts, or from about -75 volts to about -450 volts, and there is applied to the brush device a voltage of from about zero volts to about 300 volts.
Claim 31
Dependent Claim
189 words
An electrostatic imaging device comprised of a charging means, an imaging means, a development means and a fixing means, the improvement residing in the development means which is comprised of an apparatus for metering and charging non-magnetic insulating toner particles comprising in operative relationship a moving metering roll means, a compliant transport donor roll means, containing thereon a triboelectrically active coating, a toner supply reservoir means containing therein weakly charged toner particles, a voltage source means for the metering roll means, and a voltage source means for the compliant roller means, wherein toner particles are charged in a zone encompassed by said metering charging roll means and said compliant roll means, and wherein the apparatus further includes therein a moving brush device containing bristles thereon, wherein said brush conveys toner particles from the toner supply reservoir to the charging nip situated between the rollers, said bristles being flexible, which bristles are flexed as they enter the toner supply reservoir and return to their initial, unflexed position as they exit the toner supply reservoir such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 32
Dependent Claim
189 words
An electrostatic imaging device comprised of a charging means, an imaging means, a development means and a fixing means, the improvement residing in the development means which is comprised of an apparatus for metering and charging non-magnetic insulating toner particles comprising in operative relationship a moving metering roll means, a compliant transport donor roll means, containing thereon a triboelectrically active coating, a toner supply reservoir means containing therein weakly charged toner particles, a voltage source means for the metering roll means, and a voltage source means for the compliant roller means, wherein toner particles are charged in a zone encompassed by said metering charging roll means and said compliant roll means, and wherein the apparatus further includes therein a moving brush device containing bristles thereon, wherein said brush conveys toner particles from the toner supply reservoir to the charging nip situated between the rollers, said bristles being flexible, which bristles are flexed as they enter the toner supply reservoir and return to their initial, unflexed position as they exit the toner supply reservoir such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 33
Dependent Claim
29 words
An apparatus in accordance with claim 28 wherein the metering roll means is moving in a rotational direction opposite to the direction of movement of said compliant roll means.
Claim 34
Dependent Claim
19 words
An apparatus in accordance with claim 28 wherein the brush device is situated in the toner supply reservoir means.
Claim 35
Dependent Claim
25 words
An apparatus in accordance with claim 28 wherein the brush is moving in a direction opposite to the direction of movement of the metering roll.
Claim 36
Dependent Claim
18 words
An apparatus in accordance with claim 28 wherein the triboelectrically active coating is contained on the metering roll.
Claim 37
Dependent Claim
37 words
An apparatus in accordance with claim 28 wherein a voltage source means is connected to the brush means, and wherein a voltage of from about zero volts to about 300 volts are applied to the brush bristles.
Claim 38
Dependent Claim
42 words
An apparatus in accordance with claim 28 wherein the imaging member is comprised of amorphous selenium or amorphous selenium alloys; or wherein the imaging member is a layered photoresponsive device comprised of a substrate, a photogenerating layer and a charge transport layer.
Claim 39
Dependent Claim
33 words
An apparatus in accordance with claim 28 wherein the charge generating layer is vanadyl phthalocyanine or trigonal selenium, and the transport layer is comprised of diamine molecules dispersed in an inactive resinous binder.
Claim 40
Dependent Claim
55 words
An apparatus in accordance with claim 28 wherein there is applied to the metering roll means a voltage of from about +25 volts to about +200 volts, or from about -25 volts to about -200 volts; and there is applied to the brush device a voltage of from about zero volts to about 300 volts.
Claim 41
Dependent Claim
20 words
An apparatus in accordance with claim 28 wherein the triboelectrically active coating is comprised of an electronegative or electropositive materials.
Claim 42
Dependent Claim
23 words
An apparatus in accordance with claim 28 wherein the triboelectrically active coating is of a thickness of 0.1 mils to about 5 mils.
Claim 43
Dependent Claim
50 words
An apparatus in accordance with claim 37 wherein the electronegative material is selected from the group consisting of trifluorochloroethylene and vinylchloride copolymers, polyvinylidene fluorides, polytetrachlorofluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroalkoxy ethylenes, and polyvinylchloride; and the electropositive materials are selected from the group consisting of polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 44
Dependent Claim
13 words
An apparatus in accordance with claim 18 wherein the compliant roll is textured.
Claim 45
Dependent Claim
135 words
A process for charging toner particles which comprises (1) providing a moving toner transporting means, containing a triboelectrically active coating thereon, and a moving metering roll means; (2) providing a brush means containing flexible bristles thereon that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, wherein uncharged toner particles supplied to the bristles of the brush means are triboelectrically charged, and (3) subsequently causing the charged toner particles to move to a charging zone by rotation of the brush means, which charging zone is situated between the toner transporting means and the metering charging roll means, whereat the toner particles are further triboelectrically charged.
Claim 46
Dependent Claim
135 words
A process for charging toner particles which comprises (1) providing a moving toner transporting means, containing a triboelectrically active coating thereon, and a moving metering roll means; (2) providing a brush means containing flexible bristles thereon that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, wherein uncharged toner particles supplied to the bristles of the brush means are triboelectrically charged, and (3) subsequently causing the charged toner particles to move to a charging zone by rotation of the brush means, which charging zone is situated between the toner transporting means and the metering charging roll means, whereat the toner particles are further triboelectrically charged.
Claim 47
Dependent Claim
18 words
A process in accordance with claim 41 wherein the triboelectrically active coating is contained on the metering roll.
Claim 48
Dependent Claim
25 words
A process in accordance with claim 41 wherein the brush is moving in a direction opposite to the direction of movement of the metering roll.
Claim 49
Dependent Claim
36 words
A process in accordance with claim 41 wherein a voltage source means is connected to the brush means, and wherein a voltage from about zero volts to about 300 volts are applied to the brush bristles.
Claim 50
Dependent Claim
39 words
A process in accordance with claim 41 wherein the transport donor belt means traverses a path defined by a drive roll means and an idler roll means, causing the charged insulating toner particles to contact an imaging member means.
Claim 51
Dependent Claim
42 words
A process in accordance with claim 41 wherein the imaging member is comprised of amorphous selenium or amorphous selenium alloys; or wherein the imaging member is a layered photoresponsive device comprised of a substrate, a photogenerating layer and a charge transport layer.
Claim 52
Dependent Claim
33 words
A process in accordance with claim 46 wherein the charge generating layer is vanadyl phthalocyanine or trigonal selenium, and the transport layer is comprised of diamine molecules dispersed in an inactive resinous binder.
Claim 53
Dependent Claim
55 words
A process in accordance with claim 46 wherein there is applied to the metering roll means a voltage of from about +25 volts to about +200 volts, or from about -25 volts to about -200 volts; and there is applied to the brush device a voltage of from about zero volts to about 300 volts.
Claim 54
Dependent Claim
20 words
A process in accordance with claim 46 wherein the triboelectrically active coating is comprised of an electronegative or electropositive materials.
Claim 55
Dependent Claim
22 words
A process in accordance with claim 46 wherein the triboelectric coating is of a thickness of 0.1 mils to about 5 mils.
Claim 56
Dependent Claim
50 words
A process in accordance with claim 49 wherein the electronegative material is selected from the group consisting of trifluorochloroethylene and vinylchloride copolymers, polyvinylidene fluorides, polytetrachlorofluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroalkoxy ethylenes, and polyvinylchlorides; and the electropositive materials are selected from the group consisting of polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 57
Independent Claim
145 words
An apparatus for charging toner particles consisting essentially of in operative relationship a means for charging insulating toner particles, said means for charging having a triboelectrically active coating thereon, and a means for transporting insulating toner particles, said means for charging and said means for transporting being charged to a predetermined potential, which apparatus further includes therein a brush device which simultaneously causes mixing of toner particles, effects precharging of uncharged toner particles, and transports the precharged toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 58
Independent Claim
145 words
An apparatus for charging toner particles consisting essentially of in operative relationship a means for charging insulating toner particles, said means for charging having a triboelectrically active coating thereon, and a means for transporting insulating toner particles, said means for charging and said means for transporting being charged to a predetermined potential, which apparatus further includes therein a brush device which simultaneously causes mixing of toner particles, effects precharging of uncharged toner particles, and transports the precharged toner particles to a charging nip situated between the means for charging the toner particles and the means for transporting the toner particles, said brush having flexible bristles that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip.
Claim 59
Dependent Claim
18 words
An apparatus in accordance with claim 52 wherein a triboelectrically active coating is present on the transporting means.
Claim 60
Dependent Claim
18 words
An apparatus in accordance with claim 52 wherein a triboelectrically active coating is present on the charging means.
Claim 61
Dependent Claim
29 words
An apparatus in accordance with claim 52 wherein the brush means is moving at a speed of from about 200 revolutions per minute to about 1,500 revolutions per minute.
Claim 62
Dependent Claim
23 words
An apparatus in accordance with claim 52 wherein the brush bristles are about 0.500 inches in length, and about 0.007 inches in diameter.
Claim 63
Dependent Claim
136 words
An improved process for charging toner particles consisting essentially of (1) providing a moving toner transporting means, containing a triboelectrically active coating thereon, and a moving metering roll means; (2) providing a brush means with flexible bristles thereon that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, which brush means simultaneously effects precharging of uncharged toner particles, mixing of the toner particles, and accomplishes transporting of the precharged toner particles to a charging zone by rotation of the brush means, which charging zone is situated between the toner transporting means and the metering charging roll means, whereat the precharged toner particles are further triboelectrically charged.
Claim 64
Dependent Claim
136 words
An improved process for charging toner particles consisting essentially of (1) providing a moving toner transporting means, containing a triboelectrically active coating thereon, and a moving metering roll means; (2) providing a brush means with flexible bristles thereon that are flexed as they enter a toner containing means and return to their initial, unflexed position as they exit the toner containing means such that toner particles contained on the bristles become airborne and thereby enter the charging nip, which brush means simultaneously effects precharging of uncharged toner particles, mixing of the toner particles, and accomplishes transporting of the precharged toner particles to a charging zone by rotation of the brush means, which charging zone is situated between the toner transporting means and the metering charging roll means, whereat the precharged toner particles are further triboelectrically charged.
Claim 65
Dependent Claim
29 words
A process in accordance with claim 57 wherein the toner particles are transported to the charging nip by a flicking action of the bristles present on the brush means.
Claim 66
Dependent Claim
19 words
A process in accordance with claim 57 wherein the triboelectrically active coating is present on the metering roll means.
Claim 67
Dependent Claim
28 words
A process in accordance with claim 57 wherein the brush is rotated at a speed of from about 200 revolutions per minute to about 1,500 revolutions per minute.
Claim 68
Dependent Claim
26 words
A process in accordance with claim 57 wherein the bristles present on the brush are about 0.500 inches in length, and about 0.007 inches in diameter.
Claim 69
Dependent Claim
34 words
An apparatus in accordance with claim 2 wherein the brush device contains bristles thereon of a sufficient length to enable toner particles to be easily removed therefrom and subsequently directed to said charging zone.
Claim 70
Dependent Claim
19 words
An apparatus in accordance with claim 62 wherein the bristles are of a length of at least 0.5 inches.
Claim 71
Dependent Claim
34 words
An apparatus in accordance with claim 9 wherein the bristles present on the brush are of a sufficient length to enable toner particles to be easily removed therefrom and directed to said charging zone.
Claim 72
Dependent Claim
19 words
An apparatus in accordance with claim 64 wherein the bristles are of a length of at least 0.5 inches.
Claim 73
Dependent Claim
31 words
An apparatus in accordance with claim 20 wherein the brush fibers are of a sufficient length to enable toner particles to be easily removed therefrom and directed to said charging zone.
Claim 74
Dependent Claim
19 words
An apparatus in accordance with claim 66 wherein the bristles are of a length of at least 0.5 inches.
Claim 75
Dependent Claim
31 words
An apparatus in accordance with claim 28 wherein the brush fibers are of a sufficient length to enable toner particles to be easily removed therefrom and directed to said charging zone.
Claim 76
Dependent Claim
19 words
An apparatus in accordance with claim 68 wherein the bristles are of a length of at least 0.5 inches.
Claim 77
Dependent Claim
40 words
An apparatus in accordance with claim 1 wherein the triboelectrically active coating comprises a material selected from the group consisting of: trifluorochloroethylene/vinyl chloride copolymers, polyvinylidene fluoride, polytetrafluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroethylenes, polyvinyl chlorides, polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 78
Dependent Claim
40 words
An apparatus in accordance with claim 20 wherein the triboelectrically active coating comprises a material selected from the group consisting of: trifluorochloroethylene/vinyl chloride copolymers, polyvinylidene fluoride, polytetrafluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroethylenes, polyvinyl chlorides, polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 79
Dependent Claim
40 words
An apparatus in accordance with claim 52 wherein the triboelectrically active coating comprises a material selected from the group consisting of: trifluorochloroethylene/vinyl chloride copolymers, polyvinylidene fluoride, polytetrafluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroethylenes, polyvinyl chlorides, polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 80
Dependent Claim
40 words
A process in accordance with claim 57 wherein the triboelectrically active coating comprises a material selected from the group consisting of: trifluorochloroethylene/vinyl chloride copolymers, polyvinylidene fluoride, polytetrafluoroethylenes, perfluoroalkoxylated ethylenes, polytetrafluoroethylenes, polyvinyl chlorides, polyvinylpyridines, terpolymers of methacrylates, and thermoplastic toner resins.
Claim 81
Dependent Claim
58 words
An apparatus in accordance with claim 1 wherein the brush bristles have a length to diameter ratio of about 71 to 1 and comprise a material selected from the group consisting of nylon, stainless steel, brass, a composite material comprising nylon with carbon, a composite material comprising nylon with brass, and a composite material comprising nylon with steel.
Claim 82
Dependent Claim
58 words
An apparatus in accordance with claim 20 wherein the brush bristles have a length to diameter ratio of about 71 to 1 and comprise a material selected from the group consisting of nylon, stainless steel, brass, a composite material comprising nylon with carbon, a composite material comprising nylon with brass, and a composite material comprising nylon with steel.
Claim 83
Dependent Claim
58 words
An apparatus in accordance with claim 52 wherein the brush bristles have a length to diameter ratio of about 71 to 1 and comprise a material selected from the group consisting of nylon, stainless steel, brass, a composite material comprising nylon with carbon, a composite material comprising nylon with brass, and a composite material comprising nylon with steel.
Claim 84
Dependent Claim
58 words
A process in accordance with claim 57 wherein the brush bristles have a length to diameter ratio of about 71 to 1 and comprise a material selected from the group consisting of nylon, stainless steel, brass, a composite material comprising nylon with carbon, a composite material comprising nylon with brass, and a composite material comprising nylon with steel.
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