EP0458260A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Belt driving system
Assignee: Bando Chemical Industries Ltd
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Filing: 1991-05-21
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Granted: —
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Expires: 2011-05-21
Abstract
Abstract A belt driving system having at least one roller for adjusting creep within a plurality of rollers. Creep detecting means provided at one end of the creep adjusting roller is rotated by torque of a flat belt in contact with the creep detecting means. Biasing means for biasing the flat belt toward the creep detecting means and roller-end displacing means for converting the torque of the creep detecting means to displacement of the end of the creep adjusting roller toward a predetermined direction so that the flat belt is moved to the direction contrary to the creep caused by the biasing means are provided. When the flat belt creeps, the creep contrary to the original creep is caused by the roler-end displacing means, and thus the original creep is compensated. Consequently, stable running of the flat belt is obtained and clear pictures of the electrophotographic machine can be also obtained.
Inventors
- 👤 Mitsuhiko c/o BANDO CHEMICAL IND. Takahashi
- 👤 Hirofumi c/o BANDO CHEMICAL IND. Miyata
- 👤 Shinya c/o BANDO CHEMICAL IND. Yuki
- 👤 Keizo c/o BANDO CHEMICAL IND. Nonaka
- 👤 Yoshihisa c/o BANDO CHEMICAL IND. Nakano
- 👤 Hiroshi c/o BANDO CHEMICAL IND. Mitsuhashi
- 👤 Katsuya c/o BANDO CHEMICAL IND. Yamaguchi
- 👤 Yasuhiko c/o BANDO CHEMICAL IND. Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 05:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754; G03G15/755; G03G2215/00; G03G2215/00135; G03G2215/00139; G03G2215/00143; G03G2215/00151
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
132 words
A belt driving system comprising: a flat belt; a plurality of rollers, said flat belt is wound round them and at least one of said rollers is a creep adjusting roller for adjusting creep of said belt; creep detecting means, supported by an end of said creep adjusting roller, rotatable independently from said creep adjusting roller; biasing means for biasing said flat belt toward said creep detecting means; and roller-end displacing means, for converting torque received by said creep detecting means when said flat belt is in contact with said creep detecting means to a movement for displacing said end of said creep adjusting roller toward a predetermined direction so that said flat belt is moved in direction contrary to creep caused by said biasing means, connected to said creep detecting means.
Claim 2
Dependent Claim
40 words
A belt driving system claimed in Claim 1, wherein said roller-end displacing means comprises a woundable member having one end thereof connected to said creep detecting means for winding said woundable member and another end connected to a fixed member.
Claim 3
Dependent Claim
43 words
A belt driving system as claimed in Claim 1, wherein said roller-end displacing means displaces said end of said creep adjusting roller by meshing a gear formed in a part of an outer circumference of said creep detecting means with a rack gear.
Claim 4
Dependent Claim
31 words
A belt driving system as claimed in Claim 1, further comprising spring means for biasing said end of creep adjusting roller in direction contrary to displacement caused by roller-end displacing means.
Claim 5
Dependent Claim
41 words
A belt driving system as claimed in Claim 1, wherein a drive and a driven rollers are formed within said plurality of rollers and said biasing means is formed by disposing said driven roller oblique with respect to said drive roller.
Claim 6
Dependent Claim
56 words
A belt driving system as claimed in Claim 1, wherein a drive and a creep adjusting rollers are formed within said plurality of rollers and said biasing means is formed by disposing said creep adjusting roller oblique with respect to said drive roller when said flat belt is not in contact with said creep detecting means.
Claim 7
Dependent Claim
21 words
A belt driving system as claimed in Claim 1, wherein tension elasticity rate of said flat belt is higher than 200Kg/mm².
Claim 8
Dependent Claim
21 words
A belt driving system as claimed in Claim 1, wherein photographic layer is formed on a surface of said flat belt.
Claim 9
Dependent Claim
21 words
A belt driving system as claimed in Claim 1, wherein dielectric layer is formed on a surface of said flat belt.
Claim 10
Dependent Claim
64 words
A belt driving system as claimed in Claim 1, wherein said end of said creep adjusting roller having said creep detecting means thereat is supported by a roller supporting member, said roller supporting member comprises a long hole extending in direction of displacement caused by said roller-end displacing means provided at said end of said creep adjusting roller which pierces through said long hole.
Claim 11
Dependent Claim
44 words
A belt driving system as claimed in Claim 1, wherein a surface where said flat belt climbs is formed on an outer circumference of said creep detecting means, said surface flares outwardly to an increasing diameter at an end apart from creep adjusting roller.
Claim 12
Dependent Claim
40 words
A belt driving system as claimed in Claim 11, wherein a column part having same diameter as said creep adjusting roller is formed inner side of said surface of said creep detecting means and extends to said creep adjusting roller.
Claim 13
Dependent Claim
40 words
A belt driving system as claimed in Claim 1, wherein at least one roller of said plurality of rollers except said creep adjusting roller is provided with a plurality of short fibers projecting outwardly on a surface of said roller.
Claim 14
Dependent Claim
22 words
A belt driving system as claimed in Claim 13, wherein said short fibers projects outwardly 0.01∼1.00mm from said surface of said roller.
Claim 15
Dependent Claim
46 words
A belt driving system as claimed in Claim 1, wherein a surface, in contact with said flat belt, of said creep adjusting roller is consisting essentially of a material having higher friction coefficient than materials of surfaces, in contact with said flat belt, of other rollers.
Claim 16
Dependent Claim
68 words
A belt driving system as claimed in Claim 1, wherein said creep adjusting roller is positioned in order that a vector, which is belt tension between said creep adjusting roller and one of a pair of adjacent rollers is combined with belt tension between said creep adjusting roller and another one of a pair of adjacent rollers, possesses component contrary to roller-end displacement caused by roller-end displacing means.
References Cited (Backward Citations)
No citation records indexed.
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