JPS633310B2 - - Google Patents
Info
- Publication number
- JPS633310B2 JPS633310B2 JP53005341A JP534178A JPS633310B2 JP S633310 B2 JPS633310 B2 JP S633310B2 JP 53005341 A JP53005341 A JP 53005341A JP 534178 A JP534178 A JP 534178A JP S633310 B2 JPS633310 B2 JP S633310B2
- Authority
- JP
- Japan
- Prior art keywords
- moving image
- barrier piece
- slit
- developer
- barrier
- 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
- 230000004888 barrier function Effects 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research 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
- G03G15/06—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wet Developing In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
Description
【発明の詳細な説明】
本発明は、平坦な紙への電子写真複写機の光伝
導性表面から過剰な現像液を除去する除去装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a removal apparatus for removing excess developer from the photoconductive surface of an electrophotographic copying machine to flat paper.
平坦な紙への電子写真複写機では湿つたまたは
汚れた複写紙をなくしようとすれば現像中に光伝
導性表面に形成した現像液の層の大部分を除去す
る必要がある。この除去は、光伝導性表面の緻密
な現像したトナー像を乱さないで行わなければな
らない。この除去を行おうとする際に従来種類の
方法が使われている。 In flat paper electrophotographic copying machines, the elimination of wet or dirty copy paper requires the removal of most of the developer layer that forms on the photoconductive surface during development. This removal must be done without disturbing the dense developed toner image on the photoconductive surface. Conventional types of methods are used in attempting to perform this removal.
従来の１装置は光伝導性表面に対し密接な間隔
を隔てた関係にドクターブレードを備えている。
このドクターブレードの次に、非機械的清掃作用
を生ずるように静電界を生ずるコロナ導線を設け
てある。この構造は、これが液体分を充分には減
らさないので満足が得られていない。従つて複写
紙を乾燥するのに高熱が必要となり、その結果複
写機の領域内の現像液担体蒸気の量が多くなる。 One conventional device includes a doctor blade in close spaced relationship to a photoconductive surface.
Next to the doctor blade is a corona conductor which generates an electrostatic field to produce a non-mechanical cleaning action. This structure is not satisfactory because it does not reduce the liquid content sufficiently. High heat is therefore required to dry the copy paper, resulting in a high amount of developer carrier vapor in the area of the copying machine.
従来のなお別の方法によれば細長い高速度の空
気噴流を空気ナイフから差向けこの空気噴流の作
用のもとに過剰な現像液を除去する。この方法で
は比較的大容積高速度の空気流を必要とするから
かなりの量の現像液が蒸発する。周囲領域の汚染
を避けようとすれば、生ずる蒸気をかさばつた支
持装置により収集し運び去らなければならない。 Yet another conventional method involves directing an elongated high velocity air jet from an air knife to remove excess developer under the action of the air jet. Since this method requires a relatively large volume and high velocity air flow, a significant amount of developer evaporates. If contamination of the surrounding area is to be avoided, the vapors produced must be collected and carried away by bulky support devices.
林氏等を発明者とする米国特許第3907423号明
細書には光伝導性表面を横切り密接な間隔を隔て
て配置したローラをこの表面とは反対の方向に高
い速度で回転する装置について記載してある。こ
の方法は大体満足が得られるが、運動部品が多い
ので装置全体が望ましくないほど複雑になる。 U.S. Pat. No. 3,907,423 to Hayashi et al. describes an apparatus for rotating closely spaced rollers across a photoconductive surface at high speeds in a direction opposite the surface. There is. Although this method is generally satisfactory, the large number of moving parts makes the overall device undesirably complex.
本発明の目的は、現像した像を乱さないで過剰
な現像液を除去する装置を提供しようとするにあ
る。 SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for removing excess developer without disturbing the developed image.
本発明の他の目的は、過剰な量の蒸気を生じな
いで過剰現像液を除去する装置を提供しようとす
るにある。 Another object of the invention is to provide an apparatus for removing excess developer without producing excessive amounts of vapor.
さらに本発明の目的は、かさばつた補助装置を
必要としない、過剰現像液除去装置を提供しよう
とするにある。 It is a further object of the present invention to provide an excess developer removal device that does not require bulky auxiliary equipment.
なお本発明の目的は、機械的に簡単な過剰現像
液除去装置を提供しようとするにある。 It is an object of the present invention to provide a mechanically simple excess developer removing device.
一般に本発明は、光伝導性表面を横切つて延び
る狭いみぞ穴を形成した機械的障壁部片を設け、
この障壁部片を光伝導性表面との間に現像液層の
厚みより実質的に薄いすきまをおいて前記表面に
対し密接な間隔を隔てた関係に支えた、光伝導性
表面から過剰現像液を除去する装置に係わる。障
壁部片の内側から前記みぞ穴に供給する低圧空気
は、トナー像は乱さないでほぼ全部の現像液を有
効に除去するのに役立つ低圧空気障壁を形成す
る。前記障壁部片は、その各端部に回転自在に取
付けたローラを光伝導性表面に向い適当に付勢す
ることにより支えるのがよい。障壁部片を光伝導
性表面に関係的にこのように位置させることによ
り、ほぼ全部の現像液層を最低量の空気圧を使う
だけで極めてわずかな空気量で除去することがで
きる。現像液の蒸発は、従来の空気ナイフ装置の
場合に生ずる蒸気量のわずかな部分にすぎない
し、空気汚染は従つて実質的になくなる。 Generally, the present invention includes providing a mechanical barrier piece defining a narrow slot extending across a photoconductive surface;
The barrier piece is supported in a closely spaced relationship with the photoconductive surface with a gap substantially less than the thickness of the developer layer between the photoconductive surface and the excess developer solution. Relating to a device that removes Low pressure air supplied to the slots from inside the barrier piece forms a low pressure air barrier that helps effectively remove substantially all of the developer without disturbing the toner image. The barrier piece is preferably supported by rollers rotatably mounted at each end thereof and suitably biased toward the photoconductive surface. By locating the barrier piece in relation to the photoconductive surface, substantially the entire developer layer can be removed using minimal amounts of air pressure and with very little air volume. Evaporation of the developer solution is only a small fraction of the amount of vapor produced in conventional air knife systems, and air contamination is thus virtually eliminated.
以下本発明除去装置の実施例を添付図面につい
て詳細に説明する。 Embodiments of the removing device of the present invention will be described in detail below with reference to the accompanying drawings.
図示のように本発明による過剰現像液除去装置
を備えた電子写真複写機１０は、光伝導性表面１
４を持ち複数の処理場所を過ぎ図示の方向に回転
するドラム１２を備えている。とくにドラム１２
は、コロナ給電器１８によりドラム表面１４に均
等な静電荷を生ずる給電場所１６と、表面１４を
原版の光像に露出し表面１４から選択的に放電さ
せ静電像を生成する露出場所２０と、現像液を現
像タンク２４から表面１４に施し表面１４に可視
トナー粒子像を生成する現像場所２２と、現像し
た像を平坦な紙シート２８に転写する転写場所２
６とを過ぎて回転する。複写機１０は又転写場所
２６及び給電場所１６の間に清掃場所を備えるの
がよい。この清掃場所（図示してない）で蓄積し
たトナー付着物をドラム表面１４から除去する。 As shown, an electrophotographic reproduction machine 10 equipped with an excess developer removal device according to the present invention includes a photoconductive surface 1
4 and rotates in the direction shown past a plurality of processing locations. Especially drum 12
A power supply location 16 where a corona power supply 18 generates a uniform electrostatic charge on the drum surface 14, and an exposure location 20 where the surface 14 is exposed to a light image of the original and selectively discharged from the surface 14 to produce an electrostatic image. , a development station 22 where a developer solution is applied to the surface 14 from a developer tank 24 to produce a visible toner particle image on the surface 14, and a transfer station 2 where the developed image is transferred to a flat sheet of paper 28.
It rotates past 6. Reproduction machine 10 may also include a cleaning station between transfer station 26 and power supply station 16. This cleaning station (not shown) removes accumulated toner deposits from the drum surface 14.
本発明による過剰現像液除去装置３０は図示の
ようにドラム周辺にドラム１２の回転方向で現像
タンク２４のすぐ後方に位置させてある。除去装
置３０は、各端部にそれぞれ短軸３４，３６を取
付けた中空の大体円筒形の部片３２を備えてい
る。各短軸３４，３６は、ドラム表面１４にその
各側部の付近で連関するローラ３８，４０を回転
自在に支える。各ローラ３８，４０は、円筒形部
片３２によりわずかに大きい直径を持ち円筒形部
片３２及びドラム表面１４の間に約0.00508cm
（約0.002in）のすきまを形成する。現像場所２２
の通過後に表面１４は、厚みが約0.03048cm（約
0.012in）の現像液被膜を帯びる。すなわち円筒
形部片３２はこの厚みの被膜の通過に対し機械的
障壁として作用する。円筒形部片３２は現像液の
比較的厚い層の通過に対し機械的障壁になるが、
本発明者は研究の結果、表面１４に対し円筒形部
片３２の最も近接した点に引続く円筒形部片３２
の後続部分の湿りを防ぐのに或る部片を設けなけ
ればならないことを知つた。このようにしないで
後続部分が現像液で湿ると、円筒形部片３２の後
続部分及び光伝導性表面１４に沿う現像液の表面
張力被膜が自由に解放されるので、表面１４に大
きい液滴が残る。 The excess developer removing device 30 according to the present invention is located around the drum, as shown, just behind the developer tank 24 in the direction of rotation of the drum 12. The removal device 30 comprises a hollow, generally cylindrical piece 32 having a short shaft 34, 36 attached at each end, respectively. Each minor shaft 34, 36 rotatably supports a roller 38, 40 associated with the drum surface 14 near each side thereof. Each roller 38, 40 has a slightly larger diameter than the cylindrical section 32 and approximately 0.00508 cm between the cylindrical section 32 and the drum surface 14.
(approx. 0.002in). Developing place 22
After passing through, the surface 14 has a thickness of approximately 0.03048 cm (approx.
0.012in) of developer film. The cylindrical piece 32 therefore acts as a mechanical barrier to the passage of a coating of this thickness. The cylindrical piece 32 provides a mechanical barrier to the passage of a relatively thick layer of developer solution;
As a result of research, the inventor has determined that the cylindrical section 32 following the closest point of the cylindrical section 32 to the surface 14
It has been found that certain pieces must be provided to prevent wetting of trailing parts. If this is not done and the trailing portion is wetted with developer, the surface tension coating of the developer along the trailing portion of cylindrical piece 32 and photoconductive surface 14 is free to release a large amount of liquid onto surface 14. Drops remain.
円筒形部片３２には、その中空内部に連通する
軸線方向に延びる放出スリツト４２を形成してあ
る。放出スリツト４２の幅は、円筒形部片３２及
びドラム表面１４の間のすきまの５ないし10倍す
なわち約0.0508cm（約0.02in）にするのがよい。
管部片４６は供給源４８から穴４４に圧縮空気を
送る。穴４４は軸３６に形成され円筒形部片３２
の内部に通じている。空気供給源４８は大気圧よ
り約12.70ないし25.40cm（５ないし10in）水柱高
い圧力の空気を生ずるのがよい。円筒形部片３２
はスリツト４２の各縁部に隣接して外面に軸線方
向に延びるみぞ６０，６２を形成され良好な形状
の隣接領域を形成し乱流を減らす。 The cylindrical piece 32 is formed with an axially extending discharge slit 42 communicating with its hollow interior. The width of the discharge slit 42 is preferably 5 to 10 times the gap between the cylindrical section 32 and the drum surface 14, or about 0.02 inches.
Tube piece 46 conveys compressed air from source 48 to bore 44 . A hole 44 is formed in the shaft 36 and the cylindrical piece 32
It leads to the inside of. Air source 48 preferably provides air at a pressure of about 5 to 10 inches of water above atmospheric pressure. Cylindrical piece 32
are formed with axially extending grooves 60, 62 in the outer surface adjacent each edge of slit 42 to provide well-shaped abutment areas and reduce turbulence.
スリツト４２及び表面１４間の狭い間隔と、円
筒形部片３２及び表面１４間の領域におけるわず
かな正圧力とは、互に協働してドラム１２及び円
筒形部片３２間の液体の表面張力を破る有効な空
気障壁を形成し円筒形部片３２の後続部分の湿り
を防ぐ。このことは現像した像を乱さないででき
る。本発明装置は約0.05664ないし0.11328m3／
min（約２ないし4ft3／min）の少量の空気を必要
とするだけである。 The narrow spacing between the slits 42 and the surface 14 and the slight positive pressure in the area between the cylindrical piece 32 and the surface 14 cooperate with each other to reduce the surface tension of the liquid between the drum 12 and the cylindrical piece 32. forming an effective air barrier to prevent wetting of the trailing portion of the cylindrical piece 32. This can be done without disturbing the developed image. The device of the present invention has an area of approximately 0.05664 to 0.11328 m 3 /
Only a small amount of air, about 2 to 4 ft 3 /min, is required.
それぞれ短軸３４，３６を回転自在に受入れる
腕部分を持つ１対の枢動部片５０，５２は円筒形
部片３２をその作動位置に支える。各枢動部片５
０，５２は、枢動軸５４のまわりに枢動し、枢動
部片腕部分及び固定点５８の間に取付けたばね部
片５６により適当に付勢する。ばね部片５６は、
各ローラ３８，４０をドラム１２に向つて付勢し
円筒形部片３２がドラム１２の偏心又は表面の不
規則部に関係なくドラム１２から一定の距離に留
まるようにする。 A pair of pivot pieces 50, 52 having arm portions that rotatably receive short shafts 34, 36, respectively, support cylindrical piece 32 in its operative position. Each pivot piece 5
0,52 pivots about a pivot axis 54 and is suitably biased by a spring piece 56 mounted between the pivot arm and a fixed point 58. The spring piece 56 is
Each roller 38, 40 is biased toward the drum 12 so that the cylindrical section 32 remains a constant distance from the drum 12 regardless of eccentricity or surface irregularities of the drum 12.
作動サイクルの途中でスリツト４２の区域にお
ける又これに隣接する円筒形部片３２が幾分湿り
を伴う。このような現像液を除去しこれ等の区域
におけるトナー付着物の生成を防ぐように、複写
機使用ごとに円筒形部片３２のスリツト区域を、
ドラム表面１４から間隔を隔てた場所で支持部片
６６に取付けた細長い海綿状パツド６４でぬぐ
う。細長い穴あき管部片６８により海綿状パツド
６４に現像液を供給しパツド６４を湿つた状態に
保つ。 During the operating cycle, the cylindrical part 32 in and adjacent to the slit 42 becomes somewhat moist. The slit areas of the cylindrical piece 32 are cleaned between each use of the copier to remove such developer and prevent the formation of toner deposits in these areas.
Wipe with an elongated spongy pad 64 attached to a support piece 66 at a location spaced from the drum surface 14. An elongated perforated tube section 68 supplies developer solution to the spongy pad 64 and keeps the pad 64 moist.
枢動部片５０に取付けられ短軸３４に連結した
回転ソレノイド７０は複写機使用中に付勢され円
筒形部片３２を放出スリツト４２がドラム表面１
４に隣接する第３図に示した位置に保持する。複
写機使用時限の終りにソレノイド７０は消勢し円
筒形部片３２の放出スリツト４２を海綿状パツド
６４を過ぎ第４図に示した下向きの位置に逆時計
回りに回転させる。放出スリツト４２がパツド６
４を過ぎる際に現像液がぬぐわれる。次の複写機
使用時限の初めにソレノイド７０はふたたび付勢
され円筒形部片３２を時計回りにその作動位置に
回転し放出スリツト４２をドラム表面１４に隣接
させる。 A rotary solenoid 70 mounted on the pivot piece 50 and connected to the short shaft 34 is energized during use of the copier to eject the cylindrical piece 32 so that the slit 42 is in contact with the drum surface 1.
4 in the position shown in FIG. At the end of the copier usage period, solenoid 70 is deenergized causing discharge slit 42 of cylindrical section 32 to rotate counterclockwise past cavernous pad 64 to the downward position shown in FIG. The release slit 42 is connected to the pad 6
The developer is wiped off after passing 4. At the beginning of the next copier usage period, solenoid 70 is again energized to rotate cylindrical piece 32 clockwise to its operative position and bring ejection slit 42 adjacent drum surface 14.
このようにして本発明の目的を達成できるのは
明らかである。本除去装置は現像したトナー像を
乱さないで過剰なトナーを除去する。本除去装置
は、過剰な蒸気を生じないし又かさばつた補助支
持装置を必要としない。そして本除去装置は機械
的に簡単である。 It is clear that the object of the invention can be achieved in this way. This removal device removes excess toner without disturbing the developed toner image. The present removal device does not produce excessive steam or require bulky auxiliary support equipment. And this removal device is mechanically simple.
以上本発明をその実施例について詳細に説明し
たが本発明はなおその精神を逸脱しないで種種の
変化変型を行うことができるのはもちろんであ
る。 Although the present invention has been described in detail with reference to its embodiments, it is obvious that the present invention can be modified in various ways without departing from its spirit.
第１図は本発明除去装置の１実施例を備えた電
子写真複写機の側面図、第２図は第１図の２―２
線に沿う断面図、第３図は第２図の３―３線に沿
う拡大断面図、第４図は第３図の除去装置をその
非作動位置で示す横断面図である。
１０…写真複写機、１４…光伝導性表面（像支
持表面）、３２…円筒形部片（障壁部片）、３８，
４０…ローラ（取付部片）、４２…スリツト、４
８…圧縮空気供給源、５０，５２…枢動部片、５
６…ばね部片、７０…ソレノイド。
FIG. 1 is a side view of an electrophotographic copying machine equipped with an embodiment of the removal device of the present invention, and FIG.
3 is an enlarged cross-sectional view taken along line 3--3 of FIG. 2, and FIG. 4 is a cross-sectional view of the removal device of FIG. 3 in its inoperative position. 10...Photocopier, 14...Photoconductive surface (image supporting surface), 32...Cylindrical piece (barrier piece), 38,
40...Roller (mounting piece), 42...Slit, 4
8... Compressed air supply source, 50, 52... Pivoting piece, 5
6...Spring piece, 70...Solenoid.
Claims (1)
面から過剰な現像液を除去する過剰現像液除去装
置において、 (イ) 細長い障壁部片と、 (ロ) この障壁部片の長さを、前記移動像支持表面
の一部分を横切つて延ばし、前記障壁部片の先
行部分のすぐ前において前記現像液層に隣接し
て実質的に加圧されない領域を形成し、前記障
壁部片の先行部分と前記移動像支持表面との間
の間隔を、前記現像液層を妨害するために、こ
の現像液層の厚さより小さくするように、前記
障壁部片を取り付ける取り付け手段と、 (ハ) 前記障壁部片と前記移動像支持表面との隣接
領域において、前記障壁部片の先行部分の後に
空気カーテンを形成する空気カーテン形成手段
と、 を備え、 前記空気カーテン形成手段を、前記先行部分と
後続部分との間において前記障壁部片内に横方向
のスリツトを形成するスリツト形成手段と、前記
スリツトの内部を大気圧より大きい圧力に維持す
る圧力維持手段とにより構成した過剰現像液除去
装置。 ２ 前記圧力維持手段が、前記スリツトの内部
を、大気圧より約12.70ないし25.40cm（５ないし
10インチ）水柱高い圧力に維持する特許請求の範
囲第１項記載の過剰現像液除去装置。 ３ 前記圧力維持手段が、前記スリツトの内部
に、約0.05664m3/min（2ft3／min）と約0.11328
m3／ｍｉｎ（4ft3／min）との間の割合で空気を供給
する特許請求の範囲第１項記載の過剰現像液除去
装置。 ４ 前記スリツトの幅を、前記移動像支持表面か
らの前記障壁部片の間隔より実質的に大きくした
特許請求の範囲第１項記載の過剰現像液除去装
置。 ５ 前記スリツトの幅を、前記移動像支持表面か
らの前記障壁部片の間隔の５ないし10倍にした特
許請求の範囲第１項記載の過剰現像液除去装置。 ６ 前記スリツトの幅を、約0.0508cm（0.02イン
チ）にした特許請求の範囲第５項記載の過剰現像
液除去装置。 ７ 前記障壁部片の先行部分及び後続部分が、大
体において前記移動像支持表面に平行である特許
請求の範囲第１項記載の過剰現像液除去装置。 ８ 前記取り付け手段を、前記障壁部片の対向す
る端部において、この障壁部片に回転可能に取り
付けられた１対のローラと、これ等のローラを前
記移動像支持表面に押しつけるようにかたよらせ
る偏向手段とにより構成した特許請求の範囲第１
項記載の過剰現像液除去装置。 ９ 前記障壁部片と、前記移動像支持表面の先行
部分との間の間隔を、約0.00254cm（0.001イン
チ）と約0.00508cm（0.002インチ）との間にした
特許請求の範囲第１項記載の過剰現像液除去装
置。 １０ 前記障壁部片及び空気カーテン形成手段
を、中空の内部と、この内部と連通する軸線方向
に延びる放出スリツトと、この放出スリツトの各
側に沿つて外面に形成された軸線方向に延びるみ
ぞとを持つ、大体において円筒形の部片と、 前記内部を、大気圧より高い圧力に維持する維
持手段と、 により構成した特許請求の範囲第１項記載の過剰
現像液除去装置。 １１ 一定の厚さの現像液層を支える移動像支持
表面から過剰な現像液を除去する過剰現像液除去
装置において、 (イ) 細長い障壁部片と、 (ロ) この障壁部片の長さを、前記移動像支持表面
の一部分を横切つて延ばし、前記障壁部片の先
行部分のすぐ前において前記現像液層に隣接し
て実質的に加圧されない領域を形成し、前記障
壁部片の先行部分と前記移動像支持表面との間
の間隔を、前記現像液層を妨害するために、こ
の現像液層の厚さより小さくするように、前記
障壁部片を取り付ける取り付け手段と、 (ハ) 前記障壁部片と前記移動像支持表面との隣接
領域において、前記障壁部片の先行部分の後に
空気カーテンを形成する空気カーテン形成手段
と、 を備え、 前記空気カーテン形成手段を、前記先行部分と
後続部分との間において前記障壁部片内に横方向
のスリツトを形成するスリツト形成手段と、前記
スリツトの内部を大気圧より大きい圧力に維持す
る圧力維持手段とにより構成し、 前記移動像支持表面に隣接する前記障壁部片の
部分を清掃するように、前記移動像支持表面から
遠ざかる向きに間隔を置いて設けた清掃手段をさ
らに設け、前記取り付け手段に、前記障壁部片の
部分を前記清掃手段の方へ移動させる移動手段を
設けた過剰現像液除去装置。[Scope of Claims] 1. An excess developer removal device for removing excess developer from a moving image support surface supporting a developer layer of a constant thickness, comprising: (a) an elongated barrier piece; (b) the barrier; extending a length of the piece across a portion of the moving image supporting surface to form a substantially unpressurized region adjacent the developer layer immediately in front of the leading portion of the barrier piece; Attachment means for attaching the barrier piece such that the spacing between the leading portion of the barrier piece and the moving image supporting surface is less than the thickness of the developer layer for interfering with the developer layer. (c) air curtain forming means for forming an air curtain after a leading portion of the barrier piece in an area adjacent to the barrier piece and the moving image support surface; , slit-forming means for forming a transverse slit in the barrier piece between the leading and trailing parts; and pressure-maintaining means for maintaining the interior of the slit at a pressure greater than atmospheric pressure. Developer removal device. 2 The pressure maintaining means maintains the inside of the slit approximately 12.70 to 25.40 cm (5 to 5 cm) below atmospheric pressure.
10 inches) Excess developer removing device according to claim 1, which maintains a high pressure in the water column. 3 The pressure maintaining means has a pressure of about 0.05664 m 3 /min (2 ft 3 /min) and about 0.11328 m 3 /min inside the slit.
2. The excess developer removing device according to claim 1, wherein air is supplied at a rate between m 3 /min (4 ft 3 /min). 4. The excess developer removal device of claim 1, wherein the width of the slit is substantially greater than the spacing of the barrier piece from the moving image supporting surface. 5. The excess developer removal device of claim 1, wherein the width of the slit is 5 to 10 times the distance of the barrier piece from the moving image support surface. 6. The excess developer removing device according to claim 5, wherein the width of the slit is approximately 0.0508 cm (0.02 inch). 7. Excess developer removal apparatus according to claim 1, wherein the leading and trailing portions of the barrier piece are generally parallel to the moving image supporting surface. 8. said attachment means at opposite ends of said barrier section with a pair of rollers rotatably mounted to said barrier section and biased to press said rollers against said moving image supporting surface; Claim 1 constituted by a deflecting means.
Excess developer removal device described in Section 1. 9. Claim 1, wherein the spacing between the barrier piece and the leading portion of the moving image supporting surface is between about 0.001 inch and about 0.002 inch. Excess developer removal device. 10 The barrier piece and air curtain forming means are defined by a hollow interior, an axially extending ejection slit communicating with the interior, and an axially extending groove formed in the outer surface along each side of the ejection slit. 2. An excess developer removing device as claimed in claim 1, comprising: a generally cylindrical piece having a substantially cylindrical shape; and maintaining means for maintaining said interior at a pressure higher than atmospheric pressure. 11 In an excess developer removal device for removing excess developer from a moving image support surface that supports a layer of developer of a constant thickness, (a) an elongated barrier piece; and (b) the length of this barrier piece is , extending across a portion of the moving image supporting surface to form a substantially unpressurized area adjacent the developer layer immediately in front of the leading portion of the barrier piece; (c) attachment means for attaching said barrier piece such that the spacing between said portion and said moving image supporting surface is less than the thickness of said developer layer for obstructing said developer layer; air curtain forming means for forming an air curtain after a leading portion of the barrier piece in an adjacent region of the barrier piece and the moving image supporting surface; slit forming means for forming a lateral slit in the barrier piece between the moving image supporting surface and the moving image supporting surface; cleaning means spaced apart in a direction away from the moving image supporting surface for cleaning adjacent portions of the barrier section; An excess developer removing device equipped with a moving means for moving toward.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76606877A | 1977-02-07 | 1977-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5397844A JPS5397844A (en) | 1978-08-26 |
| JPS633310B2 true JPS633310B2 (en) | 1988-01-22 |
Family
ID=25075314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP534178A Granted JPS5397844A (en) | 1977-02-07 | 1978-01-23 | Device for removing eccessive developing liquid |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5397844A (en) |
| CA (1) | CA1098580A (en) |
| DE (1) | DE2758857A1 (en) |
| FR (1) | FR2379844A1 (en) |
| GB (1) | GB1579405A (en) |
| IT (1) | IT1089450B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574414U (en) * | 1992-03-17 | 1993-10-12 | 釜屋化学工業株式会社 | Two-liquid storage type compact container |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4248522A (en) * | 1979-05-21 | 1981-02-03 | Nashua Corporation | Solid metering roll |
| US4561755A (en) * | 1983-04-18 | 1985-12-31 | Sharp Kabushiki Kaisha | Cleaning device for cleaning copy paper separation device and transport device in electrophotographic copying machine |
| US5576815A (en) * | 1995-09-29 | 1996-11-19 | Minnesota Mining And Manufacturing Company | Development apparatus for a liquid electrographic imaging system |
| KR19990063858A (en) * | 1995-09-29 | 1999-07-26 | 스프레이그 로버트 월터 | Apparatus and method for removing developer liquid from an image forming substrate |
| WO1997012292A1 (en) * | 1995-09-29 | 1997-04-03 | Minnesota Mining And Manufacturing Company | Apparatus for removal of back-plated developer from a development device |
| US6091918A (en) * | 1995-09-29 | 2000-07-18 | Minnesota Mining And Manufacturing Company | Squeegee apparatus and method for removing developer liquid from an imaging substrate |
| EP0852754A1 (en) * | 1995-09-29 | 1998-07-15 | Minnesota Mining And Manufacturing Company | Squeegee apparatus and method for removing developer liquid from an imaging substrate and fabrication method |
| US5596398A (en) * | 1995-09-29 | 1997-01-21 | Minnesota Mining & Manufacturing Company | Apparatus and method for cleaning developer from an imaging substrate |
| EP0852753A1 (en) * | 1995-09-29 | 1998-07-15 | Minnesota Mining And Manufacturing Company | Apparatus and method for removing developer liquid from an imaging substrate |
| US5802436A (en) * | 1997-03-04 | 1998-09-01 | Minnesota Mining And Manufacturing Company | Apparatus for removal of back-plated developer from a development device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741643A (en) * | 1971-11-19 | 1973-06-26 | Savin Business Machines Corp | Pneumatic assembly for removing excess developer liquid from photoconductive surfaces |
| JPS5211595B2 (en) * | 1972-09-29 | 1977-03-31 | ||
| JPS5188230A (en) * | 1975-01-31 | 1976-08-02 |
-
1977
- 1977-12-13 CA CA292,947A patent/CA1098580A/en not_active Expired
- 1977-12-13 GB GB51861/77A patent/GB1579405A/en not_active Expired
- 1977-12-23 IT IT31199/77A patent/IT1089450B/en active
- 1977-12-30 DE DE19772758857 patent/DE2758857A1/en not_active Withdrawn
-
1978
- 1978-01-23 JP JP534178A patent/JPS5397844A/en active Granted
- 1978-02-07 FR FR7803411A patent/FR2379844A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574414U (en) * | 1992-03-17 | 1993-10-12 | 釜屋化学工業株式会社 | Two-liquid storage type compact container |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1089450B (en) | 1985-06-18 |
| CA1098580A (en) | 1981-03-31 |
| FR2379844A1 (en) | 1978-09-01 |
| GB1579405A (en) | 1980-11-19 |
| JPS5397844A (en) | 1978-08-26 |
| DE2758857A1 (en) | 1978-08-10 |
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