JPH0362270B2 - - Google Patents
Info
- Publication number
- JPH0362270B2 JPH0362270B2 JP17402484A JP17402484A JPH0362270B2 JP H0362270 B2 JPH0362270 B2 JP H0362270B2 JP 17402484 A JP17402484 A JP 17402484A JP 17402484 A JP17402484 A JP 17402484A JP H0362270 B2 JPH0362270 B2 JP H0362270B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- storage container
- electrophotographic
- supply pipe
- 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
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- G03G15/06—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
- G03G15/104—Preparing, mixing, transporting or dispensing developer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wet Developing In Electrophotography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は電子写真装置の現像液貯留容器に関
し、現像液中のトナーの沈降による現像むらの発
生防止を企図したものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a developer storage container for an electrophotographic apparatus, and is intended to prevent uneven development due to sedimentation of toner in the developer.
＜従来の技術＞
電子写真装置は銀塩写真感光材料からなる写真
フイルムを用いる光学的写真装置と異なり、帯電
によつてはじめて感光性を有する電子写真感光材
料からなる長いロール状、あるいはシート状の電
子写真フイルムを用いるものである。<Prior Art> Unlike optical photographic devices that use photographic film made of silver salt photographic materials, electrophotographic devices use long rolls or sheets of electrophotographic materials that become photosensitive only when charged. It uses electrophotographic film.
まず、電子写真装置を第２図〜第５図を参照し
て説明する。電子写真装置は第２図及びその断面
図である第３図に示すようなプロセスヘツド１を
備えている。プロセスヘツド１は帯電、露光、現
像、乾燥、定着の各プロセス工程を行う処理室を
組込んだ一体型のもので、電子写真フイルム２の
一駒に対応した大きさの開口をそれぞれ有した帯
電露光室３、現像室４、乾燥室５、定着室６が電
子写真フイルム２の一駒間隔で配列されており、
押え板７にて各処理室の開口部に押え付けられた
電子写真フイルム２を各室から順次処理する。 First, the electrophotographic apparatus will be explained with reference to FIGS. 2 to 5. The electrophotographic apparatus includes a process head 1 as shown in FIG. 2 and FIG. 3, which is a sectional view thereof. The process head 1 is an integrated type that incorporates processing chambers for performing each process step of charging, exposure, development, drying, and fixing. An exposure chamber 3, a developing chamber 4, a drying chamber 5, and a fixing chamber 6 are arranged at intervals of one frame of the electrophotographic film 2,
The electrophotographic film 2 pressed against the opening of each processing chamber by the holding plate 7 is sequentially processed from each chamber.
帯電露光室３が形成されている帯電露光ヘツド
８は、第４図に示すように、電子写真フイルム２
を帯電させるコロナワイヤ９、コロナ電極１０、
マスク電極１１と、帯電した電子写真フイルム２
に画像情報を結像させてこの電子写真フイルム２
を感光させるレンズ１２と、画像情報投影時に電
子写真フイルム２の感光面２ａに空気等の冷却用
気体を図外の供給源から導びく冷却気体導入管１
３とを備え、帯電露光室３の開口部３ａに押し付
けられた電子写真フイルム２の感光面２ａに静電
潜像を形成する。 As shown in FIG.
a corona wire 9, a corona electrode 10, which charges the
Mask electrode 11 and charged electrophotographic film 2
This electronic photographic film 2 is formed by forming image information on
and a cooling gas introduction pipe 1 that guides cooling gas such as air from a supply source (not shown) to the photosensitive surface 2a of the electrophotographic film 2 during image information projection.
3 to form an electrostatic latent image on the photosensitive surface 2a of the electrophotographic film 2 pressed against the opening 3a of the charging exposure chamber 3.
現像室４が形成されている現像ヘツド１４は、
第５図に示すように、トナーが分散された現像液
Ｌを現像ヘツド１４内に導びく現像液供給管１５
と、現像ヘツド１４内から現像液Ｌを排出する現
像液排出管１６とが接続されて、静電潜像が形成
された電子写真フイルム２の感光面２ａに現像液
Ｌを流してトナー現像を行うと共に、空気等の気
体を供給源１７から現像ヘツド１４内に導びくス
クイズ気体供給管１８が接続されて、この気体に
より感光面２ａに付着している余分な現像液Ｌを
液切して取除く。また、現像室４には図外の負圧
源と現像室４の外側に設けられた吸引室４ｂ内と
を連絡する吸引管１９が接続されて、現像室４の
開口部４ａに押し付けられた電子写真フイルム２
の縁部からもれ出た現像液が他へ拡がるのを防止
している。 The developing head 14 in which the developing chamber 4 is formed is
As shown in FIG. 5, a developer supply pipe 15 guides the developer L in which toner is dispersed into the developing head 14.
is connected to a developer discharge pipe 16 for discharging the developer L from inside the developing head 14, and the developer L is flowed onto the photosensitive surface 2a of the electrophotographic film 2 on which the electrostatic latent image is formed to perform toner development. At the same time, the squeeze gas supply pipe 18 that guides gas such as air from the supply source 17 into the developing head 14 is connected, and the excess developer L adhering to the photosensitive surface 2a is removed by this gas. remove. Further, a suction pipe 19 that communicates between a negative pressure source (not shown) and a suction chamber 4b provided outside the developing chamber 4 is connected to the developing chamber 4, and is pressed against the opening 4a of the developing chamber 4. Electrophotographic film 2
This prevents the developer leaking from the edges from spreading to other areas.
乾燥室５は図外の供給源と供給管２０を介して
接続され、乾燥室５の開口部に押し付けられた電
子写真フイルム２に空気等の気体を吹き付けて現
像液Ｌで濡れた感光面２ａを乾燥させる。 The drying chamber 5 is connected to a supply source (not shown) via a supply pipe 20, and a gas such as air is blown onto the electrophotographic film 2 pressed against the opening of the drying chamber 5 to wet the photosensitive surface 2a with the developer L. Dry.
定着室６にはキセノンランプ等のフラツシユラ
ンプ２１が設けられ、感光面２ａに静電気により
担持されたトナーを溶融付着させて画像情報を半
永久的にフイルム面に保存する。尚、フラツシユ
ランプ２１と電子写真フイルム２との間にはガラ
スやプラスチツクフイルム等の光透過性部材２２
が設けられ、定着時に発生する気化物のフラツシ
ユランプ２１への付着を防止している。 The fixing chamber 6 is provided with a flash lamp 21 such as a xenon lamp, which melts and adheres toner carried by static electricity to the photosensitive surface 2a, thereby semi-permanently preserving image information on the film surface. Note that a light-transmitting member 22 such as glass or plastic film is disposed between the flash lamp 21 and the electrophotographic film 2.
is provided to prevent vaporized substances generated during fixing from adhering to the flash lamp 21.
またプロセスヘツド１にはブリツプセンサ２３
が設けられ、このブリツプセンサ２３により電子
写真フイルム２に設けられたブリツプマーク２ｂ
を検知して、所望の駒の検索移動を制御すること
ができる。例えば16mm電子写真フイルム２を一駒
毎に移動、停止させると、帯電、露光、現像、乾
燥、定着の各プロセス工程が並列的に実行され、
一駒当りの処理インターバルを短くすることがで
きる。 In addition, the process head 1 has a blip sensor 23.
is provided, and the blip mark 2b provided on the electrophotographic film 2 is detected by the blip sensor 23.
By detecting this, it is possible to control the search movement of a desired piece. For example, when the 16mm electrophotographic film 2 is moved and stopped frame by frame, the process steps of charging, exposure, development, drying, and fixing are executed in parallel.
The processing interval per frame can be shortened.
ここで、従来、上記の現像ヘツド１４には第６
図に示すような現像液供給装置により現像液Ｌが
供給されている。すなわち、第１現像液タンク２
４からポンプ２５で導管２６を介して上方の第２
現像液タンク２７に現像液Ｌを汲上げ、この第２
現像液タンク２７に対して下方に位置する現像ヘ
ツド１４に現像液供給管１５を介して第２現像液
タンク２７から現像液Ｌを供給するものであり、
現像ヘツド１４から排出された現像液Ｌは現像液
排出管１６を介して第１現像液タンク２４へ戻さ
れるようになつている。そして、現像液Ｌの現像
ヘツド１４への送給制御は現像液供給管１５に設
けられた開閉弁２８により行なわれるようになつ
ていると共に、第２現像液タンク２７内の液面は
オーバフロー管２９により常に一定の高さに保た
れるようになつている。 Here, conventionally, the above-mentioned developing head 14 has a sixth head.
A developer L is supplied by a developer supply device as shown in the figure. That is, the first developer tank 2
4 through a conduit 26 with a pump 25 to the upper second
The developer L is pumped up into the developer tank 27, and this second
The developer L is supplied from the second developer tank 27 to the developer head 14 located below the developer tank 27 via the developer supply pipe 15.
The developer L discharged from the developing head 14 is returned to the first developer tank 24 via a developer discharge pipe 16. The supply of the developer L to the development head 14 is controlled by an on-off valve 28 provided in the developer supply pipe 15, and the liquid level in the second developer tank 27 is controlled by an overflow pipe. 29 so that it is always kept at a constant height.
このような現像液供給装置は、位置エネルギー
を利用して現像液Ｌを現像ヘツド１４に送給する
ため、ポンプにより圧送する方式のものに較べ感
光面２ａに付与される現像液Ｌを常に一定量且つ
一定流速に管理できると共に、開閉弁２８の閉止
時に現像液供給管１５内の開閉弁２８より下流部
分に現像液Ｌが滞留保持されるため、開閉弁２８
の開放により迅速に現像液Ｌを感光面２ａに供給
することができるものであり、現像状態を制御、
管理する上で大変都合の良いものである。 Since such a developer supply device uses potential energy to feed the developer L to the developing head 14, the developer L applied to the photosensitive surface 2a is always kept constant compared to a system that uses a pump to forcefully feed the developer L. The amount and flow rate can be controlled to be constant, and when the on-off valve 28 is closed, the developer L is retained in the downstream part of the on-off valve 28 in the developer supply pipe 15, so the on-off valve 28
By opening the opening, the developer L can be quickly supplied to the photosensitive surface 2a, and the development state can be controlled.
This is very convenient for management.
＜発明が解決しようとする問題点＞
液体現像液中のトナーは分散媒体よりも比重が
大きいため現像液貯留容器内に長期間放置される
と沈降するという欠点を持つている。また、通常
開閉弁２８により現像液Ｌの供給制御を行うこと
から現像液供給管１５は比較的小径のものとなつ
ている。このため、開閉弁２８が閉止された状態
で長時間放置されると、現像液供給管１５内に滞
留した現像液Ｌの対流がないために、現像液供給
管１５内でトナーが沈降してしまうという事態が
生じていた。また、配管内以外でも第１現像液タ
ンク２４や第２現像液タンク２７においても長期
間放置すると配管内と同様にトナーが沈降してし
まう。配管やタンク等の現像液貯留容器の形状を
検討した結果管径に比べ長さの大きなしかも上端
を弁等で閉じられたものがこのトナー沈降が著し
いことがわかつた。このようにトナーが沈降した
状態で、現像処理を行うと、感光面２ａに供給さ
れる現像液Ｌ中のトナー濃度が不均一であるた
め、現像にむらが生じてしまうという問題点があ
つた。<Problems to be Solved by the Invention> Since the toner in the liquid developer has a higher specific gravity than the dispersion medium, it has the disadvantage that it will settle if left in the developer storage container for a long period of time. Further, since the supply of the developer L is normally controlled by the on-off valve 28, the developer supply pipe 15 has a relatively small diameter. Therefore, if the on-off valve 28 is left closed for a long time, the toner will settle in the developer supply pipe 15 because there is no convection of the developer L accumulated in the developer supply pipe 15. A situation had arisen where it was put away. In addition, if the toner is left in the first developer tank 24 and the second developer tank 27 for a long period of time, the toner will settle in the same manner as in the pipes. As a result of examining the shape of developer storage containers such as piping and tanks, it was found that toner sedimentation is more pronounced in containers that are longer than the pipe diameter and whose upper end is closed with a valve or the like. If the development process is performed with the toner sedimented in this manner, there is a problem that the toner concentration in the developer L supplied to the photosensitive surface 2a is uneven, resulting in uneven development. .
本発明は上記従来の問題点に鑑みなされたもの
で、現像液貯留容器内でのトナーの沈降を防止あ
るいは、沈降したトナーをすばやく再分散して、
電子写真装置を使用しない状態で長時間放置した
後であつても、良好な状態の現像を実現するよう
現像液貯留容器内に現像液の対流を発生させる電
子写真装置の現像液貯留容器を提供することを目
的とする。 The present invention was made in view of the above-mentioned conventional problems, and it prevents the toner from settling in the developer storage container or quickly redisperses the settled toner.
To provide a developer storage container for an electrophotographic device that generates convection of the developer in the container so as to realize development in good condition even after the electrophotographic device is left unused for a long time. The purpose is to
＜問題点を解決するための手段＞
上記目的を達成して従来の問題点を解決する本
発明に係る電子写真装置の現像液貯留容器の構成
は、トナーが分散された現像液を静電潜像が形成
された電子写真感光材料の感光面に付与して、前
記静電潜像の現像を行う電子写真装置において、
前記現像液を貯留する現像液貯留容器の上部と下
部との間に温度差を生じさせて前記現像液貯留容
器内に滞留した前記現像液を対流させる温度差発
生手段を設けたことを特徴とする。<Means for Solving the Problems> The structure of the developer storage container for an electrophotographic apparatus according to the present invention, which achieves the above objects and solves the conventional problems, stores the developer in which toner is dispersed in an electrostatic latent. In an electrophotographic apparatus that develops the electrostatic latent image by applying it to the photosensitive surface of an electrophotographic photosensitive material on which an image has been formed,
It is characterized by providing a temperature difference generating means for creating a temperature difference between an upper part and a lower part of the developer storage container storing the developer and causing convection of the developer retained in the developer storage container. do.
＜作用＞
本発明に係る電子写真装置の現像液貯留容器
は、温度差発生手段により現像液貯留容器の下部
を加熱若しくは保温し、又は現像液貯留容器の上
部を冷却若しくは保温して、現像液貯留容器内に
滞留している現像液に温度差を発生させ、これに
よつて、現像液の対流を生じさせてトナーの沈降
を防止あるいは沈降したトナーを再分散させて、
常に良好な現像を保証する。<Function> The developer storage container of the electrophotographic apparatus according to the present invention heats or keeps the lower part of the developer storage container warm or cools or keeps the upper part of the developer storage container warm by the temperature difference generating means, and the developer solution is heated or kept warm by the temperature difference generating means. A temperature difference is generated in the developer remaining in the storage container, thereby causing convection of the developer to prevent the toner from settling or to redisperse the settled toner.
Ensures good development at all times.
＜実施例＞
本発明に係る電子写真装置の現像液貯留容器の
実施例を図面を参照して説明する。尚、下記の各
実施例は第６図に示した現像液供給装置の配管部
に本発明を適用したものであるので、図面には実
施例の特徴部分のみを示してある。<Example> An example of a developer storage container for an electrophotographic apparatus according to the present invention will be described with reference to the drawings. Incidentally, since each of the following embodiments applies the present invention to the piping section of the developer supply device shown in FIG. 6, only the characteristic portions of the embodiments are shown in the drawings.
第１図ａは本発明の一実施例を表す図面であ
り、温度差発生手段として、現像ヘツド１４に対
して上方から延設された現像液供給管１５の開閉
弁２８より下流部分の下端部に図外の電源に接続
された電熱ヒータ３０を内装したものである。従
つて、現像液供給管１５内に滞留している現像液
Ｌを電熱ヒータ３０により適度に加熱すると、現
像液供給管１５内で現像液Ｌの上部より下部の方
が高温となり、この温度差により現像液Ｌに対流
が生ずる。すなわち、電子写真装置を長時間使用
しない状態で放置した場合には、この放置時間中
又は使用開始の少し前に電熱ヒータ３０により加
熱して現像液Ｌに対流を生じさせることにより、
現像液中のトナーを撹拌してトナー濃度を均一に
することができ、むらのない良好な現像を達成す
ることができる。 FIG. 1a is a drawing showing an embodiment of the present invention, in which the lower end of the downstream portion of the opening/closing valve 28 of the developer supply pipe 15 extending from above with respect to the developing head 14 is used as a temperature difference generating means. An electric heater 30 connected to a power source (not shown) is installed inside. Therefore, when the developer L staying in the developer supply pipe 15 is appropriately heated by the electric heater 30, the lower part of the developer L in the developer supply pipe 15 becomes higher in temperature than the upper part, and this temperature difference increases. This causes convection in the developer L. That is, when the electrophotographic apparatus is left unused for a long time, the electrothermal heater 30 is used to heat the electrophotographic apparatus during this time or shortly before the start of use, thereby causing convection in the developer L.
By stirring the toner in the developer, the toner concentration can be made uniform, and good, even development can be achieved.
第１図ｂは本発明の他の一実施例を表す図面で
あり、温度差発生手段として、現像ヘツド１４に
対して上方から延設された現像液供給管１５の開
閉弁２８より下流部分の下端部に熱容量が大きく
且つ比較的熱伝導度の小さいブロツク部材３１を
装着したものである。一般にある部材の熱容量を
ｃ、熱伝導度をｋ、部材の内部温度をＴ、外部環
境温度をT0とすると、この部材の温度変化の速
さはdT／dt＝−ｋ／ｃ（Ｔ−T0）で表される。すなわ
ち、ブロツク部材３１は外部環境温度の変化に対
して追従性が鈍く、第１図ｃに示すように、外部
環境温度とブロツク部材３１内部温度との間に温
度差が生じ易い。従つて、開閉弁２８より下流部
分で、ブロツク部材３１により覆われた現像液供
給管１５の下部と外部環境温度に敏感な現像液供
給管１５の上部との間には外部環境温度の変化に
より温度差が生じ、現像液Ｌの対流によりトナー
が撹拌されてトナー濃度が均一となつて、良好な
現像が実現される。このように、外部環境温度の
変化により自然にトナーの撹拌を実現するブロツ
ク部材の材質として達するものとして、例えば、
比重の大きい水、重量の大きい金属やセラミツ
ク、外部環境温度の自然変化内に融点を有する物
質である芒硝に尿素を混ぜた物質（融点180℃〜
22℃）等の熱容量の大きいものが考えられ、ま
た、熱伝導度を小さくする手段としてはブロツク
部材３１の周囲を断熱材で覆う等が考えられる。 FIG. 1b is a drawing showing another embodiment of the present invention, in which a portion of the developer supply pipe 15 extending from above to the developing head 14, downstream of the on-off valve 28, is used as a temperature difference generating means. A block member 31 having a large heat capacity and relatively low thermal conductivity is attached to the lower end. Generally, if the heat capacity of a certain member is c, the thermal conductivity is k, the internal temperature of the member is T, and the external environment temperature is T0 , then the speed of temperature change of this member is dT/dt=-k/c(T- T 0 ). That is, the blocking member 31 has a slow ability to follow changes in the external environmental temperature, and as shown in FIG. 1c, a temperature difference is likely to occur between the external environmental temperature and the internal temperature of the blocking member 31. Therefore, in the downstream part of the on-off valve 28, there is a gap between the lower part of the developer supply pipe 15 covered by the blocking member 31 and the upper part of the developer supply pipe 15 which is sensitive to the external environment temperature due to changes in the external environment temperature. A temperature difference is generated, and the toner is stirred by the convection of the developer L, so that the toner concentration becomes uniform, and good development is realized. As described above, materials for the block member that naturally achieve toner agitation due to changes in external environmental temperature include, for example,
Water with a large specific gravity, metals and ceramics with a large weight, a substance that is a mixture of urea and Glauber's salt, which has a melting point within the natural variation of the external environmental temperature (melting point of 180℃ ~
A material having a large heat capacity such as 22° C.) may be considered, and a method for reducing the thermal conductivity may include covering the block member 31 with a heat insulating material.
尚、上記各実施例は、開閉弁２８により送給制
御を行う関係上小径となつて現像液Ｌの自然対流
が生じにくい現像液供給管１５の開閉弁２８より
下流部分に本発明を適用したものであるが、勿論
開閉弁２８より上流部分に本発明を適用してトナ
ー濃度の均一化を図つても良い。また配管に限ら
ず現像液を貯留するタンクに用いても良いことは
云うまでもない。さらに、本発明の温度差発生手
段は現像液を加熱するもの以外に、現像液を冷却
するものでも良く、この場合には現像液供給管１
５の上部に冷却装置や冷却フインを付設して現像
液の対流を生じさせれば良い。 In each of the above embodiments, the present invention is applied to a portion downstream of the on-off valve 28 of the developer supply pipe 15, which has a small diameter because the on-off valve 28 performs feeding control, and natural convection of the developer L is difficult to occur. However, it is of course possible to apply the present invention to a portion upstream of the on-off valve 28 to make the toner concentration uniform. It goes without saying that the present invention is not limited to piping, and may be used in tanks for storing developer. Furthermore, the temperature difference generating means of the present invention may be one that cools the developer in addition to one that heats the developer, and in this case, the temperature difference generating means may be one that cools the developer.
A cooling device or cooling fins may be attached to the upper part of the developer to generate convection of the developer.
＜発明の効果＞
本発明に係る電子写真装置の現像液貯留容器に
よれば、供給管内に滞留した現像液中のトナーの
沈降を防止あるいは、沈降したトナーをすばやく
再分散して感光面に常に均一トナー濃度の現像液
を供給することができるため、むらの生ずること
のない良好な現像を実現することができる。<Effects of the Invention> According to the developer storage container of the electrophotographic apparatus according to the present invention, the toner in the developer accumulated in the supply pipe is prevented from settling, or the settled toner is quickly redispersed to keep it on the photosensitive surface. Since a developer having a uniform toner concentration can be supplied, good development without unevenness can be achieved.
第１図は本発明の実施例に係り、第１図ａは一
実施例の現像液貯留容器の特徴部分を表す断面
図、第１図ｂは他の一実施例の現像液貯留容器の
特徴部分を表す断面図、第１図ｃはブロツク部材
の内部温度の変化を表すグラフ、第２図〜第５図
は電子写真装置のプロセスヘツドを表す図面であ
り、第２図は全体斜視図、第３図は平面断面図、
第４図は帯電露光ヘツドの側面断面図、第５図は
現像ヘツドの側面断面図、第６図は従来の現像液
供給装置を表す全体概略図である。
図面中、２は電子写真フイルム、２ａは感光
面、１４は現像ヘツド、１５は現像液供給管、２
８は開閉弁、３０は電熱ヒータ、３１はブロツク
部材、Ｌは現像液である。
FIG. 1 relates to an embodiment of the present invention, FIG. 1a is a sectional view showing the characteristic parts of a developer storage container of one embodiment, and FIG. 1b is a characteristic of a developer storage container of another embodiment. FIG. 1c is a graph showing changes in the internal temperature of the block member, FIGS. 2 to 5 are drawings showing the process head of the electrophotographic apparatus, and FIG. 2 is an overall perspective view. Figure 3 is a plan sectional view;
FIG. 4 is a side sectional view of the charging exposure head, FIG. 5 is a side sectional view of the developing head, and FIG. 6 is an overall schematic diagram showing a conventional developer supply device. In the drawing, 2 is an electrophotographic film, 2a is a photosensitive surface, 14 is a developing head, 15 is a developer supply pipe, 2
8 is an on-off valve, 30 is an electric heater, 31 is a block member, and L is a developer.
Claims (1)
された電子写真感光材料の感光面に付与して、前
記静電潜像の現像を行う電子写真装置において、
前記現像液を貯留する現像液貯留容器の上部と下
部との間に温度差を生じさせて前記現像液貯留容
器内の現像液を対流させる温度差発生手段を設け
たことを特徴とする電子写真装置の現像液貯留容
器。1. In an electrophotographic apparatus that develops the electrostatic latent image by applying a developer in which toner is dispersed to the photosensitive surface of the electrophotographic light-sensitive material on which the electrostatic latent image is formed,
Electrophotography, characterized in that it is provided with a temperature difference generating means for creating a temperature difference between an upper part and a lower part of the developer storage container for storing the developer to cause convection of the developer in the developer storage container. The developer storage container of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17402484A JPS6152668A (en) | 1984-08-23 | 1984-08-23 | Developer storage container of electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17402484A JPS6152668A (en) | 1984-08-23 | 1984-08-23 | Developer storage container of electrophotographic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6152668A JPS6152668A (en) | 1986-03-15 |
| JPH0362270B2 true JPH0362270B2 (en) | 1991-09-25 |
Family
ID=15971301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17402484A Granted JPS6152668A (en) | 1984-08-23 | 1984-08-23 | Developer storage container of electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6152668A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100331319B1 (en) * | 1998-06-30 | 2002-05-09 | 윤종용 | Apparatus for prohibiting settlement of toner of printer |
-
1984
- 1984-08-23 JP JP17402484A patent/JPS6152668A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6152668A (en) | 1986-03-15 |
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