Patent US5387962A successfully refreshed from Google Patents.
US5387962A
Expired / Lapsed
US
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Self-aligning roll for belt loop modules
Assignee: Xerox Corp
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Filing: 1993-12-13
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Granted: 1995-02-07
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Expires: 2013-12-13
Abstract
Abstract An apparatus for guiding a moving web, particularly in an electrophotographic printing machine of the type having an endless photoreceptor belt supported by a plurality of rolls and arranged to move in a predetermined path through a plurality of processing stations disposed therealong the web being of the type which is supported by a plurality of rolls. A roll for supporting the web and in frictional contact therewith is adapted for rotational movement about a first axis. A roll support in the form of a dead shaft allows the roll laterally move to pivot about a second axis in a direction substantially normal to the predetermined path direction. This is accomplished by supporting the dead shaft on a V-groove roller which rides in a track substantially along the arc of rotation normal to the predetermined path direction. Any web tracking normal to the predetermined direction exerts a friction force on the roll causing the roll to pivot about the second axis as a result of the v-groove rollers moving along the tracks in a direction substantially normal to the predetermined direction such that the roll aligns itself so that its axis of rotation is substantially perpendicular to the direction of travel of the belt.
Inventors
- 👤 Vittorio Castelli
- 👤 Harold Brown
- 👤 Stephen T. Chai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:44
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754; G03G15/755; B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/038; B65H2301/00; B65H2301/50; B65H2301/53; B65H2301/531; B65H2404/00; B65H2404/10; B65H2404/15; B65H2404/152; B65H2404/1521; B65H2404/15212
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
97 words
An apparatus for supporting a web moving along a predetermined path, including: a frame; and a member mounted movably in said frame in frictional contact with the web to provide support therefor, said member having an axis substantially normal to the predetermined path, said member being frictionally moved by the web, in response to the web having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular to the path to substantially align the axis perpendicular to the direction of travel of the web so as to minimize lateral stress on the web.
Claim 2
Independent Claim
97 words
An apparatus for supporting a web moving along a predetermined path, including: a frame; and a member mounted movably in said frame in frictional contact with the web to provide support therefor, said member having an axis substantially normal to the predetermined path, said member being frictionally moved by the web, in response to the web having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular to the path to substantially align the axis perpendicular to the direction of travel of the web so as to minimize lateral stress on the web.
Claim 3
Dependent Claim
34 words
An apparatus as claimed in claim 1, in which said member comprises a roll for supporting the web and in frictional contact therewith, said roll being adapted for rotational movement about a first axis.
Claim 4
Dependent Claim
106 words
An apparatus as claimed in claim 2, further comprising a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the web so as to minimize lateral stress on the web.
Claim 5
Independent Claim
230 words
An apparatus for supporting a web moving along a predetermined path, including: a frame; a roll for supporting the web and in frictional contact therewith, said roll being adapted for rotational movement about a first axis mounted movably in said frame, said roll first axis being substantially normal to the predetermined path, said roll being frictionally moved by the web, in response to the web having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the web so as to minimize lateral stress on the web, said roll comprising a pair of nonrotating members and a cylindrical web support member rotatably supported at each end by one of said pair of nonrotating members; and a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the web so as to minimize lateral stress on the web.
Claim 6
Independent Claim
230 words
An apparatus for supporting a web moving along a predetermined path, including: a frame; a roll for supporting the web and in frictional contact therewith, said roll being adapted for rotational movement about a first axis mounted movably in said frame, said roll first axis being substantially normal to the predetermined path, said roll being frictionally moved by the web, in response to the web having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the web so as to minimize lateral stress on the web, said roll comprising a pair of nonrotating members and a cylindrical web support member rotatably supported at each end by one of said pair of nonrotating members; and a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the web so as to minimize lateral stress on the web.
Claim 7
Dependent Claim
48 words
An apparatus as claimed in claim 4, in which said roll support includes a substantially frictionless support adapted to movably connect said nonrotating members to said frame so as to allow said cylindrical web support member to pivot in a direction substantially normal to the predetermined path direction.
Claim 8
Dependent Claim
64 words
An apparatus as claimed in claim 5, wherein said roll support comprises: a pair of axles, each of said axles adapted to rotatably support said cylindrical member at an end thereof; and a pair of brackets, each of said brackets connected to each of said axles and defining an obtuse angle therewith, each of said brackets being adapted to engage said substantially frictionless support.
Claim 9
Dependent Claim
63 words
An apparatus as claimed in claim 6, wherein said substantially frictionless support comprises: an axle perpendicularly attached to each of said pair of brackets; and an idler roller rotatably supported of each on said axles wherein each of said idler rollers are adapted to track in an elongated slot defined by said frame, said frame being substantially parallel to each of said brackets.
Claim 10
Dependent Claim
69 words
An apparatus as claimed in claim 6, wherein said substantially friction less support comprises: a pair of axles perpendicularly attached to said frame adjacent to each of said brackets; and an idler roller rotatably supported on each of said pair of axles wherein each of said idler roller pairs define a journal to support each of said brackets, each of the journals being aligned with the respective said bracket.
Claim 11
Dependent Claim
20 words
An apparatus as claimed in claim 6, wherein said roll support is interior to each end of said cylindrical member.
Claim 12
Dependent Claim
119 words
An electrophotographic printing machine of the type having an endless photoreceptor belt supported by a plurality of rolls and arranged to move in a predetermined path through a plurality of processing stations disposed therealong, including: a frame; and a member mounted movably in said frame in frictional contact with the belt to provide support therefor, said member having an axis substantially normal to the predetermined path, said member being frictionally moved by the belt, in response to the belt having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt.
Claim 13
Dependent Claim
119 words
An electrophotographic printing machine of the type having an endless photoreceptor belt supported by a plurality of rolls and arranged to move in a predetermined path through a plurality of processing stations disposed therealong, including: a frame; and a member mounted movably in said frame in frictional contact with the belt to provide support therefor, said member having an axis substantially normal to the predetermined path, said member being frictionally moved by the belt, in response to the belt having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt.
Claim 14
Dependent Claim
35 words
A printing machine as claimed in claim 10, in which said member comprises a roll for supporting the belt and in frictional contact therewith, said roll being adapted for rotational movement about a first axis.
Claim 15
Dependent Claim
107 words
A printing machine as claimed in claim 11, further comprising a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt.
Claim 16
Dependent Claim
253 words
An electrophotographic printing machine of the type having an endless photoreceptor belt supported by a plurality of rolls and arranged to move in a predetermined path through a plurality of processing stations disposed therealong, including: a frame; a roll for supporting the belt and in frictional contact therewith, said roll being adapted for rotational movement about a first axis mounted movably in said frame, said roll first axis being substantially normal to the predetermined path, said roll being frictionally moved by the belt, in response to the belt having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt, said roll comprising a pair of nonrotating members and a cylindrical belt support member rotatably supported at each end by one of said pair of nonrotating members; and a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt.
Claim 17
Dependent Claim
253 words
An electrophotographic printing machine of the type having an endless photoreceptor belt supported by a plurality of rolls and arranged to move in a predetermined path through a plurality of processing stations disposed therealong, including: a frame; a roll for supporting the belt and in frictional contact therewith, said roll being adapted for rotational movement about a first axis mounted movably in said frame, said roll first axis being substantially normal to the predetermined path, said roll being frictionally moved by the belt, in response to the belt having a direction of travel deviating from the predetermined path, in a direction substantially perpendicular the path to substantially align the axis perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt, said roll comprising a pair of nonrotating members and a cylindrical belt support member rotatably supported at each end by one of said pair of nonrotating members; and a roll support for attaching said roll to said frame, said roll support being laterally movable to allow the roll to pivot about a second axis in a direction substantially normal to the predetermined path direction wherein web tracking normal to the predetermined direction exerts a friction force on said roll causing said roll to pivot in a direction substantially normal to the predetermined direction such that said roll aligns so that the first axis of rotation is substantially perpendicular to the direction of travel of the belt so as to minimize lateral stress on the belt.
Claim 18
Dependent Claim
49 words
A printing machine as claimed in claim 13, in which said roll support includes a substantially frictionless support adapted to movably connect said nonrotating members to said frame so as to allow said cylindrical belt support member to pivot in a direction substantially normal to the predetermined path direction.
Claim 19
Dependent Claim
65 words
A printing machine as claimed in claim 14, wherein said roll support comprises: a pair of axles, each of said axles adapted to rotatably support said cylindrical member at an end thereof; and a pair of brackets, each of said brackets connected to each of said axles and defining an obtuse angle therewith, each of said brackets being adapted to engage said substantially frictionless support.
Claim 20
Dependent Claim
64 words
A printing machine as claimed in claim 15, wherein said substantially frictionless support comprises: an axle perpendicularly attached to each of said pair of brackets; and an idler roller rotatably supported of each on said axles wherein each of said idler rollers are adapted to track in an elongated slot defined by said frame, said frame being substantially parallel to each of said brackets.
Claim 21
Dependent Claim
68 words
A printing machine as claimed in claim 15, wherein said substantially frictionless support comprises: a pair of axles perpendicularly attached said frame adjacent to each of said brackets; and an idler roller rotatably supported on each of said pair of axles wherein each of said idler roller pairs define a journal to support each of said brackets, each of the journals being aligned with the respective said bracket.
Claim 22
Dependent Claim
21 words
A printing machine as claimed in claim 15, wherein said roll support is interior to each end of said cylindrical member.
References Cited (Backward Citations)
US2593157A
Cited
GB803974A
Cited
US3107036A
Cited
US3540571A
Cited
US3973446A
Cited
US4061222A
Cited
US4170175A
Cited
US4174171A
Cited
US4344693A
Cited
US4397538A
Cited
US4547059A
Cited
US4483607A
Cited
US4572417A
Cited
US4552295A
Cited
JPS61188314A
Cited
JPS63112311A
Cited
US5078263A
Cited
US4961089A
Cited
US4996563A
Cited
US5019864A
Cited
US5248029A
Cited
US5246099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |