EP0586869A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photoreceptor for a copier
Assignee: Konica Minolta Inc
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Filing: 1993-07-29
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Granted: —
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Expires: 2013-07-29
Abstract
Abstract An apparatus for rotating a photoreceptor of a given length in its axial direction, comprises a driven system inlcuding the photoreceptor and a shaft provided at the axis of the photoreceptor and a driving system including a driving source and a transmission mechanism. The driven system and the driving system are arranged so that the proper oscillation frequency of the driven system is made lower than both the frequency of fluctuation component caused per one rotation of the driving system and the frequency of fluctuation component caused per one tooth of the transmission mechanism.
Inventors
- 👤 Toru Konica Corporation Makino
- 👤 Tadashi Konica Corporation Miwa
- 👤 Ken Konica Corporation Nonaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/757; F; F16; F16F; F16F15/00; F16F15/10; F16F15/14; F16F15/1407; F16F15/1414; F16F15/1435; F16F15/1442
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
140 words
An apparatus for use in an image forming apparatus, for rotating a rotation member having a given length in its axial direction, comprising: a shaft provided at the axis of said rotation member, for rotating said rotation member, said rotation member and said shaft constructing a driven system; a diving source; a member to transmit driving force from said driving source to said shaft, said transmitting member including tooth members engaging with each other to transmit driving force, said driving source and said transmitting member constructing a driving system; and said driven system and said driving system arranged so that the proper oscillation frequency of said driven system is made lower than both the frequency of fluctuation component caused per one rotation of said driving system and the frequency of fluctuation component caused per one tooth of said tooth members.
Claim 2
Dependent Claim
36 words
The apparatus of claim 1, wherein the torsional rigidity of said driven system is made so lower that the proper oscillation frequency of said driven system is made lower than both the frequency of fluctuation components.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, wherein said rotational member is a photoreceptor drum.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1, wherein said rotational member is a driving roller to rotate a belt-type photoreceptor.
Claim 5
Dependent Claim
93 words
The apparatus of claim 1, wherein said rotation member has a first end portion and a second end portion on its axis and said shaft passes through between said first and second end portions in said rotation member along said axis of said rotation member, and wherein said driving system is disposed on the side of said first end portion of said rotation member and said shaft and said rotation member are not fixed to each other on said first end portion and are fixed to each other on said second end portion.
Claim 6
Dependent Claim
25 words
The apparatus of claim 5, wherein a part of said shaft is made smaller in diameter than that of the other portion of said shaft.
Claim 7
Dependent Claim
32 words
The apparatus of claim 5, further comprising an inertia member to increase the inertia moment of said driven system, wherein said inertia member is fixed to the inside of said rotation member.
Claim 8
Dependent Claim
22 words
The apparatus of claim 7, further comprising a dynamic damper mounted on said shaft, for absorbing the oscillation of said driven system.
Claim 9
Dependent Claim
24 words
The apparatus of claim 8, wherein said dynamic damper is disposed on a side of said rotation member where said driving system is located.
Claim 10
Dependent Claim
33 words
The apparatus of claim 8, wherein said dynamic damper comprises an inner ring mounted on said shaft, an outer ring and a rubber member provided between said inner ring and said outer ring.
Claim 11
Dependent Claim
27 words
The apparatus of claim 7, further comprising a blade member for contact with a part of said rotation member so that a rotational fluctuation is quickly damped.
Claim 12
Dependent Claim
105 words
The apparatus of claim 1, further comprising damping means for damping a rotational fluctuation wherein said rotation member has a first end portion and a second end portion on its axis and said shaft passes through between said first and second end portions in said rotation member along said axis of said rotation member, and wherein said driving system is disposed on the side of said first end portion of said rotation member and said shaft and said rotation member are fixed to each other through said damping means on said first end portion and are fixed to each other on said second end portion.
Claim 13
Dependent Claim
19 words
The apparatus of claim 1, further comprising an inertia member to increase the inertia moment of said driven system.
Claim 14
Dependent Claim
53 words
The apparatus of claim 13, wherein said rotation member has a first end portion and a second end portion on its axis, said driving system is disposed on the side of said first end portion of said rotation member and said inertial member is disposed on the side of said first end portion.
Claim 15
Dependent Claim
18 words
The apparatus of claim 13, wherein said inertia member is made in one body with said rotation member.
Claim 16
Dependent Claim
29 words
The apparatus of claim 15, wherein said driving source, said transmitting member, said shaft, said rotation member and said inertia member are linked in the order of said sequence.
Claim 17
Dependent Claim
42 words
The apparatus of claim 13, wherein said inertia member is a disk-shaped member mounted on said shaft in said rotation member, and wherein the mounted position of said disk-shaped member is adjustable so that the distribution of the inertia moment is adjusted.
References Cited (Backward Citations)
No citation records indexed.
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