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Conductive part for image forming device

A conductive and image technology, applied in the direction of electric recording process applying charge pattern, equipment for electric recording process applying charge pattern, conductive material dispersed in non-conductive inorganic material, etc. Problems such as oxene and environmental dependence

Inactive Publication Date: 2004-07-14
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in the conventional publications such as the above-mentioned Japanese Patent Laid-Open No. 2002-304064, the belts using the general ion conduction method have problems in that the volume resistivity is highly dependent on the environment and the resistivity during continuous energization is large. rising phenomenon
[0018] However, when the above-mentioned halogen-based flame retardant is added, it is generally considered that toxic gases such as dioxin will be generated if the belt is exposed to high temperature during disposal after use.
In addition, if the above-mentioned phosphate-based flame retardant is added, if the belt is used at high temperature for a long time, the flame retardant will seep from the inside of the belt to the surface of the belt as time goes by, polluting the photosensitive drum, etc.

Method used

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  • Conductive part for image forming device
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  • Conductive part for image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 8～11

[0211] In Examples 8 to 11, EO-PO-AGE copolymers were used as the polymers constituting the discontinuous phase, and salts 3 to 6, which are salts that can be dissociated into cations and anions, are prevalent in this material, respectively. Salt 3 is potassium bis(trifluoromethanesulfonyl)imide, salt 4 is hexyltrimethylammonium-bis(trifluoromethanesulfonyl)imide, and salt 5 is 1-ethyl-3-methylimidazolium -Bis(trifluoromethanesulfonyl)imide (abbreviated as EMI-TFSI), salt 6 is 1-ethyl-3-methylimidazolium-tetrafluoroborate (abbreviated as EMI-BF4).

[0212] Otherwise, it was the same as Example 2, and a solid roll was made.

[0213] Salt 4 is a quaternary ammonium salt of a trimethyl group (with three methyl groups in R1 to R4) whose cation is represented by Chemical Formula 2, the salt is an imidazolium salt represented by Chemical Formula 2, one of R5 or R6 is a methyl group and the other is a methyl group. is ethyl.

Embodiment 1～11

[0235] The following are related to [Examples 1 to 11] and [Comparative Examples 1 to 10].

[0236] In an environment of 23° C. and a relative humidity of 55%, a constant voltage of 1000 V was continuously applied to the roller for 96 hours in the same state as when the roller resistance value [Ω] was measured. At this time, the values ​​of the roller resistance value R (t=0hr.) immediately after the voltage application and the roller resistance value R (t=96hr.) after the application of the voltage for 96 hours were measured in the same manner as described above, and the continuous energization was conducted using these values. The resistance increase amount at the time: Δlog10R(t=96hr.)[Ω]=log10R(t=96hr.)-log10R(t=0hr.) calculation. Numerical values ​​are shown in Tables 1 to 4. In addition, since the rotational speed of the aluminum drum was 30 rpm and the diameter was 30 mmφ, the linear velocity at the time of rotation was 94 mm / min.

[0237] (compression set)

[0238] ...

Embodiment 12～17

[0288] The following are related to [Examples 12 to 17] and [Comparative Examples 11 to 16].

[0289] In an environment of 23°C and a relative humidity of 55%, in the same state as in the measurement of the fixed volume resistance value, at a certain point in the conductive belt with a thickness of 0.25 mm, a digital ultra High-resistance microcurrent meter R-8240A, a constant voltage of 1000V was applied continuously for 5 hours. At this time, in the same manner as described above, the value of the constant volume resistance value ρV (t=0hr.) of the belt immediately after the voltage application and the value of the constant volume resistance value ρV (t=5hr.) of the belt after the application of the voltage for 5 hours were measured using These values ​​are calculated for the resistance increase amount at the time of continuous energization: Δlog10ρV (t=5-0hr.) [Ω]=log10ρV (t=5hr.)−log10ρV (t=0hr.). Numerical values ​​are shown in Tables 5 to 7.

[0290] (in-plane unevenne...

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Abstract

A conductive layer of a conductive member for an image-forming apparatus is composed of a conductive polymer composition containing an ionic-conductive addition salt. The conductive polymer composition has a continuous phase and one or more uncontinuous phases including at least one first uncontinuous phase. The continuous phase and the uncontinuous phase form a sea-island structure. A salt capable of dissociating into cations and anions is unevenly distributed to the first uncontinuous phase. A polymer composing the first uncontinuous phase has a higher degree of affinity for the salt capable of dissociating into cations and anions than a polymer composing the continuous phase to prevent the salt (or the cations, the anions) from shifting out of the first uncontinuous phase or out of the polymer composition. The conductive polymer composition can contain melamine cyanurate so that it is flame-retardant.

Description

technical field [0001] The present invention relates to a conductive member composed of a roller and a belt used in an image forming apparatus and a method for manufacturing the same, and more particularly to a conductive roller and a conductive belt suitable for use as an image forming apparatus for office machines such as copiers, laser printers, and facsimile machines. A stable and good image can be obtained by improving the environmental dependence, time dependence, etc. of the electrical resistance of the conductive polymer composition forming the conductive layer forming the conductive member by using the conductive member of the composition. Background technique [0002] As a method of imparting conductivity to conductive members such as conductive rollers and conductive belts for image forming apparatuses, there are two methods. The method of the conductive polymer composition of the conductive filler, and the method of the ion conducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20B29C48/08B29C48/34B29C70/58B29C70/88C08L71/02
CPCY10T428/31931B29K2995/0005Y10T428/31855B29C47/20Y10T428/3154C08L71/02B29L2029/00B29C47/0021B29C47/28Y10T428/31786B29C70/58B29C70/882B29C48/08B29C48/32B29C48/34C08L2666/24H01B1/20
Inventor 服部高幸上坂宪市越智淳田中雅和寺川克美纪拥军
Owner SUMITOMO RUBBER IND LTD
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