JPH024908B2 - - Google Patents
Info
- Publication number
- JPH024908B2 JPH024908B2 JP8530482A JP8530482A JPH024908B2 JP H024908 B2 JPH024908 B2 JP H024908B2 JP 8530482 A JP8530482 A JP 8530482A JP 8530482 A JP8530482 A JP 8530482A JP H024908 B2 JPH024908 B2 JP H024908B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- hot plate
- communication port
- heater hot
- fan
- 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
Links
- 238000005192 partition Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 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
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
-
- 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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
- G03G15/11—Removing excess liquid developer, e.g. by heat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は、湿式電子写真装置における熱板乾燥
定着装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot plate drying and fixing device for a wet type electrophotographic apparatus.
一般に、湿式電子写真装置では定着手段として
熱板乾燥定着方式が採られており、この際、転写
紙とヒータ熱板との密着性をよくすることが必要
である。そこで、従来は、特開昭50−147725号公
報に示されるようにヒータ熱板の上方で送風し、
ヒータ熱板の下方で吸引するようにしたものがあ
るが、ヒータ熱板自体に吸引孔が形成されていな
いので転写紙のヒータ熱板に対する密着性はあま
りよくない。これに対し、ヒータ熱板に複数の孔
または溝を開口させてその開口を通して空気を吸
引し転写紙の密着性を向上させるようにしたもの
が実開昭50−86140号公報に示されている。とこ
ろが、この種の負圧による吸引手段は単に転写紙
とヒータ熱板との密着性をよくするという意味で
は極めて有効な手段であるが、負圧吸引に伴う空
気の流れがヒータ熱板の温度を低下させ、折角密
着させた転写紙を充分に加熱できるだけの温度を
維持できない等の不都合を生ずるものである。 In general, a wet electrophotographic apparatus uses a hot plate dry fixing method as a fixing means, and in this case, it is necessary to improve the adhesion between the transfer paper and the heater hot plate. Therefore, conventionally, air is blown above the heater hot plate, as shown in Japanese Patent Application Laid-open No. 50-147725,
There are some devices that are designed to suck air below the heater hot plate, but since the heater hot plate itself does not have suction holes, the adhesion of the transfer paper to the heater hot plate is not very good. On the other hand, Japanese Utility Model Application Publication No. 50-86140 discloses a heater plate with a plurality of holes or grooves in which air is sucked through the holes to improve the adhesion of the transfer paper. . However, although this type of suction means using negative pressure is extremely effective in simply improving the adhesion between the transfer paper and the heater hot plate, the air flow accompanying the negative pressure suction causes the temperature of the heater hot plate to increase. This causes inconveniences such as the inability to maintain a temperature sufficient to heat the transfer paper that has been brought into close contact with the transfer paper.
本発明は、このような点に鑑みなされたもの
で、基本的には密着性の向上する負圧吸引方式を
採用しつつ、その吸引によるヒータ熱板の温度低
下を最小限に抑えることができ、良好なる定着の
可能な熱板乾燥定着装置を得ることを目的とする
ものである。 The present invention was developed in view of these points, and basically employs a negative pressure suction method that improves adhesion, while minimizing the temperature drop of the heater hot plate due to the suction. The object of the present invention is to obtain a hot plate drying and fixing device capable of good fixing.
本発明は、ヒータ熱板に形成した小孔から吸引
ダクトを介して吸引フアンによる負圧吸引を行な
うことにより、転写紙をヒータ熱板に密着させる
ものであるが、この際、吸引ダクト内を所定の連
通口を有する中仕切板により仕切つて小孔からこ
の連通口を通つて吸引フアンに向かう略Ｕ字状の
吸引通風路を形成することにより、空気流に適度
な損失を与えてその流れをゆるやかにし、よつ
て、吸引によりヒータ熱板から熱を奪うのを最小
限に抑えることができるように構成したものであ
る。 The present invention brings the transfer paper into close contact with the heater hot plate by applying negative pressure suction with a suction fan through a suction duct through a small hole formed in the heater hot plate. At this time, the inside of the suction duct is By forming a substantially U-shaped suction ventilation path from the small hole to the suction fan through the communication port, which is partitioned by a partition plate having a predetermined communication port, the air flow can be improved by giving an appropriate loss to the air flow. The structure is such that it is possible to minimize the amount of heat taken away from the heater hot plate by suction.
本発明の一実施例を図面に基づいて説明する。
まず、ヒータ１を下面に有するヒータ熱板２には
複数の小孔３が形成されている。これらの小孔３
は定着ムラを生じないよう幅方向にわたつて配列
されつつ、通紙方向（矢印で示す）に見て喰い違
い状に設けられ負圧吸引力が転写紙（図示せず）
に一様にかかるように設定されている。ここで、
ヒータ熱板２はＡで示す位置が転写紙の通紙搬送
基準端とするものである。そして、このヒータ熱
板２は吸引ダクト４の開口部上に設置されるもの
であり、この吸引ダクト４のＡ位置とは反対側の
端面下部には開口５が形成されている。この開口
５にはパイプ６を介して吸引フアン７が連結され
ている。したがつて、小孔３とこの吸引フアン７
とは吸引ダクト４により連通することになる。こ
の吸引フアン７は吐出口８を有し、モータ９によ
り吸引動作を行なうものである。 An embodiment of the present invention will be described based on the drawings.
First, a plurality of small holes 3 are formed in a heater hot plate 2 having a heater 1 on its lower surface. These small holes 3
are arranged in the width direction to prevent uneven fixing, and are provided in a staggered manner when viewed in the paper feeding direction (indicated by the arrow), so that negative pressure suction force is applied to the transfer paper (not shown).
It is set so that it is applied uniformly. here,
The position A of the heater hot plate 2 is set as a reference end for conveyance of the transfer paper. The heater hot plate 2 is installed above the opening of the suction duct 4, and an opening 5 is formed at the lower end of the suction duct 4 on the opposite side from the A position. A suction fan 7 is connected to this opening 5 via a pipe 6. Therefore, the small hole 3 and this suction fan 7
The suction duct 4 communicates with the suction duct 4. This suction fan 7 has a discharge port 8 and is operated by a motor 9 to perform a suction operation.
しかして、吸引ダクト４内にはこの吸引ダクト
４内を上下に２分して調圧室１０，１１を形成す
る中仕切板１２が設けられている。ここで、前記
開口５は調圧室１１側に位置するように設定され
ている。また、中仕切板１２には通紙搬送基準端
Ａ側に位置させて角穴状の連通口１３が形成され
ている。この連通口１３の面積S1は前記小孔３の
総面積と同等であり、また、調圧室１０，１１の
断面積S2、S3に対してS1＜S2、S1＜S3となるよう
に設定されている。 A partition plate 12 is provided inside the suction duct 4 to divide the inside of the suction duct 4 into upper and lower halves to form pressure regulating chambers 10 and 11. Here, the opening 5 is set to be located on the pressure regulating chamber 11 side. In addition, a square hole-shaped communication port 13 is formed in the partition plate 12 so as to be located on the paper passing reference end A side. The area S 1 of the communication port 13 is equal to the total area of the small holes 3, and with respect to the cross-sectional areas S 2 and S 3 of the pressure regulating chambers 10 and 11, S 1 <S 2 , S 1 <S It is set to be 3 .
このような構成において、小孔３から吸い込ま
れた空気は調圧室１０を通つてすべて連通口１３
に導かれ、この連通口１３から下の調圧室１１を
通つて吸引フアン７によりその吐出口９から外へ
吐出される。したがつて、空気流を全体的に見れ
ば、第２図に矢印で示すように略Ｕ字状の吸引通
風路１４が形成されたことになる。これにより、
転写紙はヒータ熱板２上に負圧吸引されてその密
着性がよいものであるが、その空気の流れも吸引
通風路１４に従うため適度の損失を受けて、ゆる
やかな空気流となり、ダイレクト方式等のように
急激な空気の流れが生ずる場合に比べて、ヒータ
熱板２の温度低下は少なくなる。よつて、吸引密
着させた転写紙に対し定着動作が良好に行なわれ
る。このとき、連通口１３が通紙搬送基準端Ａ側
に形成されているので、転写紙のサイズの変化に
対しても安定した吸引効果、したがつてヒータ熱
板２に対する密着性が確保される。また、この連
通口１３の開口面積S1が調圧室１０，１１の断面
積S2、S3に比べて小さいので、調圧室１０と連通
口１３との間および連通口１３と調圧室１１との
間で調圧作用が働き、吸引圧力は安定したものと
なり、吸引フアン７の回転ムラ等の圧力変化など
の外乱に対し空気流の流れはその乱れが少なくな
る。さらに、調圧室１０，１１を流れる空気はヒ
ータ１で熱せられているため、ヒータ熱板２との
間の温度勾配がゆるやかであり、ヒータ熱板２の
熱の拡散を防ぐことができ、かつ、このヒータ熱
板２の温度分布ムラも改善されることになる。 In such a configuration, all the air sucked from the small hole 3 passes through the pressure regulating chamber 10 and reaches the communication port 13.
The air is guided through the communication port 13 through the pressure regulating chamber 11 below, and is discharged to the outside from the discharge port 9 by the suction fan 7. Therefore, when looking at the airflow as a whole, a substantially U-shaped suction ventilation path 14 is formed as shown by the arrow in FIG. This results in
The transfer paper is suctioned under negative pressure onto the heater hot plate 2 and has good adhesion, but since the airflow also follows the suction ventilation path 14, it suffers a moderate loss and becomes a gentle airflow. The temperature drop of the heater hot plate 2 is smaller than in the case where a rapid air flow occurs, such as in the case where a sudden air flow occurs. Therefore, the fixing operation can be performed satisfactorily on the transfer paper that is brought into close contact with suction. At this time, since the communication port 13 is formed on the paper passing reference end A side, a stable suction effect even when the size of the transfer paper changes, and therefore adhesion to the heater hot plate 2 is ensured. . In addition, since the opening area S 1 of the communication port 13 is smaller than the cross-sectional areas S 2 and S 3 of the pressure regulation chambers 10 and 11, the space between the pressure regulation chamber 10 and the communication port 13 and the pressure regulation A pressure regulating action is performed between the suction fan 7 and the chamber 11, so that the suction pressure becomes stable, and the air flow is less disturbed by disturbances such as pressure changes such as uneven rotation of the suction fan 7. Furthermore, since the air flowing through the pressure regulating chambers 10 and 11 is heated by the heater 1, the temperature gradient between it and the heater hot plate 2 is gentle, and the diffusion of heat from the heater hot plate 2 can be prevented. Moreover, the uneven temperature distribution of the heater hot plate 2 is also improved.
本発明は、上述したようにヒータ熱板に形成し
た小孔から吸引ダクトを介して吸引フアンによる
負圧吸引を行なうに際し、吸引ダクト内に所定の
連通口が形成された中仕切板を設けて２分し、小
孔から連通口を通つて吸引フアンへ向かう略Ｕ字
状の吸引通風路を形成したので、負圧吸引による
転写紙のヒータ熱板に対する密着性を確保しつ
つ、そのための空気流は適度な損失を受けてゆる
やかとなりヒータ熱板から熱を奪うのを最小限に
抑えることができ、良好なる定着が可能となり、
さらに、連通口が通紙搬送基準端側に設けられて
いるので、転写紙のサイズ変化に対しても安定し
た密着性を確保することができるものである。 As described above, when performing negative pressure suction by a suction fan through a suction duct from a small hole formed in a heater hot plate, the present invention provides a partition plate in which a predetermined communication port is formed in the suction duct. By dividing the small hole into two and forming a roughly U-shaped suction ventilation path that goes from the small hole to the suction fan through the communication port, it is possible to ensure the adhesion of the transfer paper to the heater hot plate due to negative pressure suction, while also allowing the air to flow for this purpose. The flow is moderate due to moderate loss, and the heat taken away from the heater hot plate can be minimized, allowing for good fixing.
Furthermore, since the communication port is provided on the paper passing reference end side, stable adhesion can be ensured even when the size of the transfer paper changes.
図面は本発明の一実施例を示すもので、第１図
は一部切欠いて示す斜視図、第２図は通紙方向前
方から見たその断面図である。
２……ヒータ熱板、３……小孔、４……吸引ダ
クト、５……開口、７……吸引フアン、１２……
中仕切板、１３……連通口、１４……吸引通風
路。
The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway perspective view, and FIG. 2 is a sectional view of the same as seen from the front in the paper passing direction. 2... Heater hot plate, 3... Small hole, 4... Suction duct, 5... Opening, 7... Suction fan, 12...
Partition plate, 13... communication port, 14... suction ventilation path.
Claims (1)
吸引用の吸引フアンと、通紙搬送基準端と反対側
にて前記吸引フアンに連通する開口を有して前記
小孔とこの吸引フアンとを連通させる吸引ダクト
と、この吸引ダクト内を２つに仕切りつつ前記小
孔の総面積と同等の連通口が通紙搬送基準端側に
形成されて前記吸引ダクト内に前記小孔からこの
連通口を通つて吸引フアンへ向かう略Ｕ字状の吸
引通風路を形成する中仕切板とを設けたことを特
徴とする熱板乾燥定着装置。1. A heater hot plate in which a plurality of small holes are formed, a suction fan for negative pressure suction, and an opening that communicates with the suction fan on the side opposite to the paper passing reference end to connect the small holes and this suction. A suction duct that communicates with the fan, and a communication port that partitions the inside of the suction duct into two and has a communication port equal to the total area of the small hole on the paper conveyance reference end side so that the suction duct is connected to the small hole. A hot plate drying and fixing device characterized by being provided with a partition plate that forms a substantially U-shaped suction ventilation path that goes toward the suction fan through the communication port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8530482A JPS58202469A (en) | 1982-05-20 | 1982-05-20 | Drying and fixation device with hot plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8530482A JPS58202469A (en) | 1982-05-20 | 1982-05-20 | Drying and fixation device with hot plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58202469A JPS58202469A (en) | 1983-11-25 |
| JPH024908B2 true JPH024908B2 (en) | 1990-01-30 |
Family
ID=13854854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8530482A Granted JPS58202469A (en) | 1982-05-20 | 1982-05-20 | Drying and fixation device with hot plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58202469A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0434407U (en) * | 1990-07-19 | 1992-03-23 | ||
| JP2003057975A (en) * | 2001-08-09 | 2003-02-28 | Katsuragawa Electric Co Ltd | Electrophotographic equipment |
-
1982
- 1982-05-20 JP JP8530482A patent/JPS58202469A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0434407U (en) * | 1990-07-19 | 1992-03-23 | ||
| JP2003057975A (en) * | 2001-08-09 | 2003-02-28 | Katsuragawa Electric Co Ltd | Electrophotographic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58202469A (en) | 1983-11-25 |
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