CN101650543B - Low-resistance charging roller and manufacturing method thereof - Google Patents
Low-resistance charging roller and manufacturing method thereof Download PDFInfo
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- CN101650543B CN101650543B CN2009101768559A CN200910176855A CN101650543B CN 101650543 B CN101650543 B CN 101650543B CN 2009101768559 A CN2009101768559 A CN 2009101768559A CN 200910176855 A CN200910176855 A CN 200910176855A CN 101650543 B CN101650543 B CN 101650543B
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Abstract
The invention relates to a low-resistance charging roller which comprises the following components in parts by weight: 1000 parts of polyurethane, 15 parts of chain supporter, 10 parts of plasticizer, 20 parts of chain extender, 15 parts of toluene di-isocyanate, 50 parts of black carbon, 10 parts of static agent and 6 parts of talcum powder. A manufacturing method of the low-resistance charging roller comprises the following steps: mixing the polyurethane, the chain supporter, the chain extender, the static agent and the talcum powder, and melting into a mixed liquid; milling colloid; sieving by a vibration sieve, and degassing through vacuum pumping; putting into a reaction kettle, adding the plasticizer, stirring, then adding the toluene di-isocyanate and the black carbon, vacuumizing, degassing and then pouring; and forming. The low-resistance charging roller has the advantages that a photosensitive drum of a printer can not be polluted or damaged by the low-resistance charging roller; the resistance is low and uniform; the wearing coefficient of a PU material is generally more than ten times that of a rubber material, the PU material can not be aged or does not generate ozone, and the service life of the PU material is 6-8 times that of a rubber roller; and the performance is stable, and the performance of the rubber roller is little changed with the change of temperature and humidity.
Description
Technical field
The present invention relates to a kind of low-resistance charging roller and manufacture method thereof.
Background technology
Charging roller is the critical component of laser printer, and its effect is the residual electronic image on the photosensitive drums of erasing, and the drum surface is rushed to uniform electric charge.Along with the continuous progress of printing, duplicating, facsimile art, the update that all kinds of types are frequent, printing, duplicating, facsimile recorder technology are ripe day by day, wherein, the increasing substantially of important symbol-be exactly printing, duplicating, facsimile recorder rotating speed.For this reason, new challenge-be the adjustment of charging roller resistance value has also been proposed the charging roller in these types.That is to say: thereby because the high-speed rotation of machine has improved the speed of printing, this just requires charging roller to photosensitive drums erase fast electronic image and rapid charge, and accomplish to erase fast electronic image and rapid charge just must be had higher requirement to the control of charging roller colloid layer resistance value.The charging roller colloid layer of domestic production at present all is an elastomeric material, also can only be semiconductor at most, and resistance value is also all 10
7More than the Ω, the resistance value through testing new charging roller at most will be 10
5Below the Ω, so the requirement that do not reached new architecture of elastomeric material colloid layer resistance value.The product of elastomeric material production does not reach environmental protection requirement yet simultaneously, and charging roller causes the pollution to photosensitive drum surface in the photosensitive drum charging process.At present, low-resistance charging roller still is a blank at home, and domestic required this type of charging roller also can only dependence on import.The charging roller that the present invention produces with environment-friendly materials PU, resistance value has reached 10
5Below the Ω, make the insulator colloid layer of charging roller become the electric conductor colloid layer, reached the environmental protection of product again.
Summary of the invention
Technical matters to be solved by this invention is, at above-mentioned prior art present situation, and provide a kind of and can not pollute photosensitive drums, resistance is low and the low-resistance charging roller and the manufacture method thereof of even, long service life and stable performance.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of low-resistance charging roller is characterized in that the basic composition of its prescription is as follows: (below count by weight percentage) polyurethane (PU): 950-1050 part; Side chain agent (TMP): 13-17 part; Plastifier (DMEP): 9-11 part; Chain extender (BDO): 18-22 part; Toluene diisocyanate TDI:13-17 part; Carbon black: 45-55 part; Electrostatic agent (LS): 8-12 part; Talcum powder: 5-7 part.
It preferably fills a prescription composed as follows: (below count by weight percentage) polyurethane (PU): 1000 parts; Side chain agent (TMP): 15 parts; Plastifier (DMEP): 10 parts; Chain extender (BDO): 20 parts; Toluene diisocyanate TDI:15 part; Carbon black: 50 parts; Electrostatic agent (LS): 10 parts; Talcum powder: 6 parts.
The manufacture method of low-resistance charging roller is characterized in that, comprises the steps: a) according to above-mentioned prescription, and after polyurethane, side chain agent, chain extender, electrostatic agent, five kinds of raw materials of talcum powder were mixed, the change hopper of putting into 80 ℃ of temperature was melted into mixed liquor; B) put into colloid mill melting good mixed liquor, ground 20 minutes; C) will grind good material, and put into vibratory screening apparatus to sieve; D) the good material of sieve, put into the vacuum tank of 80 ℃ of temperature, vacuumized 1 hour, do the degassing and handle; E) material that the degassing is handled well is put into the reactor of 100 ℃ of temperature; Then the plastifier in the composition of raw materials, stirring reaction vacuumized, outgases 20 minutes after 1 hour in the adding reactor, added the two kinds of raw materials of toluene diisocyanate, carbon black in the composition of raw materials then, cast after vacuumizing, outgas 15 minutes; F) mould is taken out cast in the baking box of 100 ℃ of temperature; After cast is good, iron core is put into mould build; G) mould is put into the curing cage of 160 ℃ of temperature, vulcanized outlet after 3 hours, promptly obtain the blank of low-resistance charging roller; H) the blank two ends of low-resistance charging roller are cut; I) with rubber roll muller corase grind; J) with computer controlled grinding machine correct grinding, wear into standard size after, finished product detection.
Compared with prior art, the invention has the advantages that it can not pollute the photosensitive drums of printer and damage photosensitive drums; Its resistance is low and even; PU material wear-resistant coefficient generally is more than 10 times of elastomeric material, and does not wear out, do not produce ozone, and be 6-8 times of rubber roller its serviceable life; Stable performance, the variation of temperature, humidity, very little to the change of roller performance.
Embodiment
According to embodiment the present invention is described in further detail below.
A kind of low-resistance charging roller, its prescription composed as follows: (below count by weight percentage)
Polyurethane (PU): 1000 parts;
Side chain agent (TMP): 15 parts;
Plastifier (DMEP): 10 parts;
Chain extender (BDO): 20 parts;
Toluene diisocyanate TDI:15 part;
Carbon black: 50 parts;
Electrostatic agent (LS): 10 parts;
Talcum powder: 6 parts.
The manufacture method of low-resistance charging roller comprises the steps:
A) according to above-mentioned prescription, after polyurethane, side chain agent, chain extender, electrostatic agent, five kinds of raw materials mixing of talcum powder, the change hopper of putting into 80 ℃ of temperature is melted into mixed liquor;
B) put into colloid mill melting good mixed liquor, ground 20 minutes;
C) will grind good material, and put into vibratory screening apparatus to sieve;
D) the good material of sieve, put into the vacuum tank of 80 ℃ of temperature, vacuumized 1 hour, do the degassing and handle;
E) material that the degassing is handled well is put into the reactor of 100 ℃ of temperature; Then the plastifier in the composition of raw materials, stirring reaction vacuumized, outgases 20 minutes after 1 hour in the adding reactor, added the two kinds of raw materials of toluene diisocyanate, carbon black in the composition of raw materials then, cast after vacuumizing, outgas 15 minutes;
F) mould is taken out cast in the baking box of 100 ℃ of temperature; After cast is good, iron core is put into mould build;
G) mould is put into the curing cage of 160 ℃ of temperature, vulcanized outlet after 3 hours, promptly obtain the blank of low-resistance charging roller;
H) the blank two ends of low-resistance charging roller are cut;
I) with rubber roll muller corase grind;
J) with computer controlled grinding machine correct grinding, wear into standard size after, finished product detection.
Claims (2)
1. the manufacture method of a low-resistance charging roller is characterized in that, comprises the steps:
A) according to prescription, the basic composition of described prescription is by weight as follows:
Polyurethane: 950-1050 part;
Side chain agent TMP:13-17 part;
Plastifier DMEP:9-11 part;
Chain extender BDO:18-22 part;
Toluene diisocyanate: 13-17 part;
Carbon black: 45-55 part;
Electrostatic agent: 8-12 part;
Talcum powder: 5-7 part;
After polyurethane, side chain agent, chain extender, electrostatic agent, five kinds of raw materials mixing of talcum powder, the change hopper of putting into 80 ℃ of temperature is melted into mixed liquor;
B) put into colloid mill melting good mixed liquor, ground 20 minutes;
C) will grind good material, and put into vibratory screening apparatus to sieve;
D) the good material of sieve, put into the vacuum tank of 80 ℃ of temperature, vacuumized 1 hour, do the degassing and handle;
E) material that the degassing is handled well is put into the reactor of 100 ℃ of temperature; Then the plastifier in the composition of raw materials, stirring reaction vacuumized, outgases 20 minutes after 1 hour in the adding reactor, added the two kinds of raw materials of toluene diisocyanate, carbon black in the composition of raw materials then, cast after vacuumizing, outgas 15 minutes;
F) mould is taken out cast in the baking box of 100 ℃ of temperature; After cast is good, iron core is put into mould build;
G) mould is put into the curing cage of 160 ℃ of temperature, vulcanized outlet after 3 hours, promptly obtain the blank of low-resistance charging roller;
H) the blank two ends of low-resistance charging roller are cut;
I) with rubber roll muller corase grind;
J) with computer controlled grinding machine correct grinding, wear into standard size after, finished product detection.
2. manufacture method as claimed in claim 1 is characterized in that: the composition of described prescription is by weight as follows:
Polyurethane: 1000 parts;
Side chain agent TMP:15 part;
Plastifier DMEP:10 part;
Chain extender BDO:20 part;
Toluene diisocyanate: 15 parts;
Carbon black: 50 parts;
Electrostatic agent: 10 parts;
Talcum powder: 6 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768559A CN101650543B (en) | 2009-09-23 | 2009-09-23 | Low-resistance charging roller and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768559A CN101650543B (en) | 2009-09-23 | 2009-09-23 | Low-resistance charging roller and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101650543A CN101650543A (en) | 2010-02-17 |
| CN101650543B true CN101650543B (en) | 2011-12-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101768559A Expired - Fee Related CN101650543B (en) | 2009-09-23 | 2009-09-23 | Low-resistance charging roller and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101650543B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541059A (en) * | 2013-09-28 | 2014-01-29 | 安徽省尚美精密机械科技有限公司 | Low-resistance spinning rubber roll and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311727A (en) * | 1998-07-29 | 2001-09-05 | 莱克斯马克国际公司 | Polyurethane roller with high surface resistance |
| CN1475870A (en) * | 2003-01-07 | 2004-02-18 | 广州市刘氏橡塑制品有限公司 | Charging roller and its manufacturing method |
| CN101178559A (en) * | 2007-09-28 | 2008-05-14 | 横店集团东磁股份有限公司 | Charge roller and method of producing the same |
-
2009
- 2009-09-23 CN CN2009101768559A patent/CN101650543B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311727A (en) * | 1998-07-29 | 2001-09-05 | 莱克斯马克国际公司 | Polyurethane roller with high surface resistance |
| CN1475870A (en) * | 2003-01-07 | 2004-02-18 | 广州市刘氏橡塑制品有限公司 | Charging roller and its manufacturing method |
| CN101178559A (en) * | 2007-09-28 | 2008-05-14 | 横店集团东磁股份有限公司 | Charge roller and method of producing the same |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-73441A 2003.03.12 |
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| CN101650543A (en) | 2010-02-17 |
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Granted publication date: 20111214 Termination date: 20120923 |