JPH0415955B2 - - Google Patents
Info
- Publication number
- JPH0415955B2 JPH0415955B2 JP59005910A JP591084A JPH0415955B2 JP H0415955 B2 JPH0415955 B2 JP H0415955B2 JP 59005910 A JP59005910 A JP 59005910A JP 591084 A JP591084 A JP 591084A JP H0415955 B2 JPH0415955 B2 JP H0415955B2
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- cooling
- outside
- airtight chamber
- outside air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 45
- 238000001816 cooling Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 description 9
- 230000005494 condensation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000005679 Peltier effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
- G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、感光体の冷却装置に係り、特に、電
子写真複写機において、感光体内部の空気を放熱
用の外気から遮断し、結露を少なくした感光体の
冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling device for a photoreceptor, and in particular, in an electrophotographic copying machine, the air inside the photoreceptor is shielded from outside air for heat radiation to prevent dew condensation. This invention relates to a cooling device for a photoreceptor with a reduced capacity.
電子写真はフアクシミリ、プリンタのハードコ
ピー関連主要技術の１つとして、あるいは、在来
の事務用軽印刷に代わるものとして、近年注目さ
れている技術である。 Electrophotography is a technology that has been attracting attention in recent years as one of the main technologies related to facsimile and hard copy printers, or as an alternative to conventional light printing for office use.
電子写真複写機の感光体の形態としてはベルト
状感光体、感光体ドラム、シート状感光体等があ
げられる。 Examples of the form of the photoreceptor of an electrophotographic copying machine include a belt-like photoreceptor, a photoreceptor drum, and a sheet-like photoreceptor.
例えば、ベルト状感光体を用いた電子写真複写
機は、通常、第１図に示す如くであり、３つの感
光体ドライブロール１に駆動されたベルト状の感
光体２の走行に従い、まず、帯電器３によつて該
感光体上に均一の電荷を付与した後、露光系４に
よつて該感光体上に、原稿のもつ画情報に対応し
た静電潜像を形成する。その後、この静電潜像を
現像装置５によつて可視像化し、それによつて得
られたトナー像を転写コロトロン６によつて電荷
を付与された用紙７に転写する。そして、転写後
の該ベルト状感光体に残留しているトナーを除電
装置８によつて電気的に中和させる。しかる後、
ベルト状感光体の面上の残留トナーをクリーニン
グ装置９によつて除去し、更に除電ランプ１０に
よつてベルト状感光体を帯電前の状態に戻し、次
工程での帯電に備える。 For example, an electrophotographic copying machine using a belt-shaped photoreceptor is normally as shown in FIG. After a uniform charge is applied to the photoreceptor by the device 3, an electrostatic latent image corresponding to the image information of the original is formed on the photoreceptor by the exposure system 4. Thereafter, this electrostatic latent image is visualized by a developing device 5, and the resulting toner image is transferred by a transfer corotron 6 onto a sheet of paper 7 to which an electric charge has been applied. Then, the toner remaining on the belt-shaped photoreceptor after the transfer is electrically neutralized by the static eliminator 8. After that,
The residual toner on the surface of the belt-shaped photoreceptor is removed by a cleaning device 9, and the belt-shaped photoreceptor is returned to its pre-charging state by a static elimination lamp 10 in preparation for charging in the next step.
このようにして、最初の工程すなわち、帯電器
３による電荷付与工程に戻り、繰り返し複写が続
行されていくわけである。 In this way, the process returns to the first step, that is, the charge application step using the charger 3, and copying is continued repeatedly.
ところで、感光体は、熱に対して不安定な性質
をもつており、温度が上昇すると、画質が低下す
るため、感光体を冷却すべく、いろいろな方法が
用いられている。
By the way, photoreceptors have a property of being unstable with respect to heat, and as the temperature rises, the image quality deteriorates. Therefore, various methods are used to cool the photoreceptors.
例えば、電子写真複写機の外の空気を感光体の
周辺に送り込んで冷却する方法、あるいは、冷却
装置を機外に設け、外気を冷却し、冷却された外
気を感光体の周辺に送り込んで冷却する方法等で
ある。 For example, air from outside the electrophotographic copying machine is sent around the photoreceptor to cool it, or a cooling device is installed outside the machine to cool the outside air, and then the cooled outside air is sent around the photoreceptor to cool it. method etc.
前者の方法の場合、機外の温度が低くなければ
効果がなく、又、送風機による雑音が大きく、さ
らには結露による水が出るという欠点を有してお
り、一方、後者の方法の場合、常に外気を取り込
んで冷却するため、冷却装置に結露による水が出
る上、冷却要領の大きな装置を必要とし、騒音が
大きいという欠点を有している。いずれの方法に
よつても発生する結露は、除去するのが困難であ
り、常に結露による水の処置を必要とし複写機の
保守上の問題となつている。 In the case of the former method, it is not effective unless the temperature outside the machine is low, and has the drawbacks of high noise from the blower and water condensation. Since the outside air is taken in for cooling, water condenses into the cooling device, which requires a device with a large cooling capacity, and has the drawbacks of high noise. Condensation generated by either method is difficult to remove and requires constant treatment of water caused by condensation, which poses a maintenance problem for copying machines.
本発明は、前記実情に鑑みてなされたもので、
外気温度以下の温度で冷却しても冷却手段の冷却
部に結露を生じる割合の少ない冷却装置を提供す
ることを目的とする。
The present invention was made in view of the above circumstances, and
It is an object of the present invention to provide a cooling device in which dew condensation is less likely to occur in a cooling part of a cooling means even when cooling is performed at a temperature below the outside air temperature.
上記目的を達成するため、本発明の冷却装置
は、感光体の両端面に設けられ、感光体内部を密
封する枠体と、感光体の内壁面と枠体とによつて
形成される気密室内に、サーモ素子の冷却部を配
設すると共に、気密室外にこのサーモ素子の放熱
部をそれぞれ配設して、気密室内の気体を外気温
度以下に冷却可能な冷却手段とを具備し、気密室
の気体を介して伝えられる前記感光体からの熱を
前記放熱部から放熱するように構成されている。
To achieve the above object, the cooling device of the present invention includes a frame provided on both end surfaces of a photoreceptor and sealing the inside of the photoreceptor, and an airtight chamber formed by the inner wall surface of the photoreceptor and the frame. The airtight chamber is provided with a cooling section for the thermo-element, and a cooling means that is capable of cooling the gas in the air-tight chamber to below the outside air temperature by disposing the heat-radiating section of the thermo-element outside the air-tight chamber. The heat radiating portion is configured to radiate heat from the photoreceptor that is transmitted through the gas.
以下、本発明の実施例について、図面を参照し
つつ、詳細に説明する。
Embodiments of the present invention will be described in detail below with reference to the drawings.
本発明実施例の冷却装置は第２図に断面図（こ
れは、例えば第１図におけるＡ−Ａ断面に相当す
る）を示す如く、ベルト状感光体の側方にすなわ
ちドライブロール１の端部を通る２つの面を、密
封シール部材１１を介して第１および第２の枠体
１２，１３を配設し、感光体内部を密閉すると共
に、該第２の枠体１３に断熱材１４を介してサー
モ素子１５をとり付けてなり、該サーモ素子１５
の放熱部は、該感光体の外部に設けられ、外気を
供給し、さらに機外に放出すべく、機外すなわち
外装ケース０の外側から導入されたダクト１６内
に、放熱フイン１７および第１のフアン１８を具
備している。 As shown in the cross-sectional view of FIG. 2 (this corresponds to the A-A cross section in FIG. 1, for example), the cooling device according to the embodiment of the present invention is installed on the side of the belt-shaped photoreceptor, that is, at the end of the drive roll 1. The first and second frames 12 and 13 are arranged with a sealing member 11 in between, and the inside of the photoreceptor is sealed, and a heat insulating material 14 is provided on the second frame 13. A thermo element 15 is attached through the thermo element 15.
The heat dissipation section is provided outside the photoreceptor, and is provided with a heat dissipation fin 17 and a first heat dissipation section in a duct 16 introduced from outside the machine, that is, from the outside of the exterior case 0, in order to supply outside air and release it to the outside of the machine. It is equipped with a fan 18.
更に、前記サーモ素子１５はペルチエ効果によ
り、感光体内部の熱を、外部に放出するもので、
内部にもフイン１９および第２のフアン２０を具
備しており、かつ、感光体内部に設けられたサー
ミスタ２１によつて常に温度を検出し、設定温度
よりも検出温度が高い時のみ、感光体内部の熱を
放出するように構成されたコントローラ２２を介
して電源２３に接続されている。 Further, the thermo-element 15 releases the heat inside the photoreceptor to the outside due to the Peltier effect.
The inside is also equipped with a fin 19 and a second fan 20, and the temperature is constantly detected by a thermistor 21 provided inside the photoreceptor, and the photoreceptor is activated only when the detected temperature is higher than the set temperature. It is connected to a power source 23 via a controller 22 configured to radiate internal heat.
かかる構成を有することにより、この冷却装置
は、感光体の両端面に枠体を配設し、感光体内部
を一つの気密室とし、この内部の冷却手段によつ
て外気温度以下に冷却し、この空気を介して感光
体を裏面全体から冷却するため、冷却部（具体的
にはフイン１９における）結露が少なく、極めて
均一に感光体を冷却することができ、画質を再現
性よく良好にコントロールすることができる上、
枠体によつて密閉された感光体内部にある空気の
みを冷却するため、結露が少なく、結露によつて
生じた水滴の処理をする必要がない。 With this configuration, this cooling device has a frame provided on both end surfaces of the photoreceptor, the inside of the photoreceptor is made into one airtight chamber, and the inside of the photoreceptor is cooled to below the outside air temperature by the cooling means inside the photoreceptor. Since the photoconductor is cooled from the entire back surface through this air, there is little condensation on the cooling section (specifically on the fins 19), and the photoconductor can be cooled extremely uniformly, allowing good control of image quality with good reproducibility. On top of being able to
Since only the air inside the photoreceptor sealed by the frame is cooled, there is little dew condensation and there is no need to dispose of water droplets caused by dew condensation.
また、感光体およびその周辺の構成部材のみを
冷却すればよいため、冷却容量が少なくてすむ。 Further, since only the photoreceptor and its surrounding components need be cooled, the cooling capacity can be reduced.
更には、装置が小型になる上、感光体内部に密
閉されるため、騒音が少ないという利点を有して
いる。 Furthermore, the apparatus has the advantage of being small in size, and since it is sealed inside the photoreceptor, there is less noise.
なお、実施例においては、ベルト状感光体を用
いた電子写真複写機の場合について説明したが、
この他、感光体ドラムを用いた方式についても、
本発明は有効である。 In addition, in the example, the case of an electrophotographic copying machine using a belt-shaped photoreceptor was explained.
In addition, regarding methods using photoreceptor drums,
The present invention is effective.
以上、説明してきたように、本発明の冷却装置
によれば、感光体の両端面に枠体を配設し、感光
体内部を一つの気密室とし、この内部の空気を介
して感光体の裏面全体から冷却するようにすると
共に、放熱部は、この気密室の外側に設けられ、
機外の空気と接触可能なように構成されているた
め、極めて均一に感光体を冷却することができ、
画質を再現性よく良好にコントロールすることが
でき、さらにまた結露が少なく水滴の処理が不要
である上、冷却容量が少なくてすみ、装置の小型
化が可能である。
As described above, according to the cooling device of the present invention, frames are disposed on both end surfaces of the photoreceptor, the inside of the photoreceptor is made into one airtight chamber, and the air inside the photoreceptor is heated. In addition to cooling from the entire back surface, a heat dissipation section is provided outside this airtight chamber.
Because it is configured so that it can come into contact with the air outside the machine, the photoreceptor can be cooled extremely evenly.
The image quality can be well controlled with good reproducibility, there is little dew condensation, there is no need to treat water droplets, and the cooling capacity is small, making it possible to downsize the device.
第１図は通常の電子写真複写機の原理説明図、
第２図は、本発明実施例の感光体の冷却装置の断
面図である。
１……ドライブロール、２……ベルト状感光
体、３……帯電器、４……露光系、５……現像装
置、６……転写コロトロン、７……用紙、８……
除電装置、９……クリーニング装置、１０……徐
電ランプ、１１……密封シール部材、１２……第
１の枠体、１３……第２の枠体、１４……断熱
材、１５……サーモ素子、１６……ダクト、１７
……放熱フイン、１８……第１のフアン、１９…
…フイン、２０……第２のフアン、２１……サー
ミスタ、２２……コントローラ、２３……電源。
Figure 1 is a diagram explaining the principle of an ordinary electrophotographic copying machine.
FIG. 2 is a sectional view of a photoreceptor cooling device according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Drive roll, 2... Belt-shaped photoreceptor, 3... Charger, 4... Exposure system, 5... Developing device, 6... Transfer corotron, 7... Paper, 8...
Static eliminator, 9... Cleaning device, 10... Discharge lamp, 11... Sealing member, 12... First frame, 13... Second frame, 14... Heat insulating material, 15... Thermo element, 16...Duct, 17
...Radiation fin, 18...First fan, 19...
...Fin, 20...Second fan, 21...Thermistor, 22...Controller, 23...Power supply.
Claims (1)
封する枠体と、 前記感光体の内壁面と前記枠体とによつて形成
される気密室内に、サーモ素子の冷却部を配設す
ると共に、気密室外に前記サーモ素子の放熱部を
それぞれ配設して、気密室内の気体を外気温度以
下に冷却可能な冷却手段とを具備し、 前記気密室の気体を介して伝えられる前記感光
体からの熱を前記放熱部から放熱するようにした
ことを特徴とする感光体冷却装置。[Scope of Claims] 1. A frame provided on both end surfaces of the photoreceptor and sealing the inside of the photoreceptor, and a thermo-element in an airtight chamber formed by the inner wall surface of the photoreceptor and the frame. A cooling unit is provided, and a cooling means is provided that is capable of cooling the gas in the airtight chamber to below the outside air temperature by arranging the heat radiating portions of the thermoelectric elements outside the airtight chamber, and cooling the gas in the airtight chamber to a temperature below the outside air temperature. 1. A photoconductor cooling device characterized in that heat transmitted from the photoconductor is radiated from the heat radiating section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005910A JPS60150080A (en) | 1984-01-17 | 1984-01-17 | Photosensitive body cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005910A JPS60150080A (en) | 1984-01-17 | 1984-01-17 | Photosensitive body cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60150080A JPS60150080A (en) | 1985-08-07 |
| JPH0415955B2 true JPH0415955B2 (en) | 1992-03-19 |
Family
ID=11624050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59005910A Granted JPS60150080A (en) | 1984-01-17 | 1984-01-17 | Photosensitive body cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60150080A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073796A (en) * | 1987-08-31 | 1991-12-17 | Kabushiki Kaisha Toshiba | Cooling system for an apparatus with a heat generating element therein |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57108240U (en) * | 1980-12-23 | 1982-07-03 |
-
1984
- 1984-01-17 JP JP59005910A patent/JPS60150080A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60150080A (en) | 1985-08-07 |
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