JPS63303382A - Fixing device for wet recorder - Google Patents

Fixing device for wet recorder

Info

Publication number
JPS63303382A
JPS63303382A JP13942687A JP13942687A JPS63303382A JP S63303382 A JPS63303382 A JP S63303382A JP 13942687 A JP13942687 A JP 13942687A JP 13942687 A JP13942687 A JP 13942687A JP S63303382 A JPS63303382 A JP S63303382A
Authority
JP
Japan
Prior art keywords
toner
roller
transfer paper
fixing
toner image
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.)
Granted
Application number
JP13942687A
Other languages
Japanese (ja)
Other versions
JP2606843B2 (en
Inventor
Kenzo Ariyama
賢三 有山
Manabu Mochizuki
学 望月
Tsuneo Kurotori
恒夫 黒鳥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP62139426A priority Critical patent/JP2606843B2/en
Publication of JPS63303382A publication Critical patent/JPS63303382A/en
Application granted granted Critical
Publication of JP2606843B2 publication Critical patent/JP2606843B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Fixing For Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

PURPOSE:To rapidly execute a fixing process and to eliminate offsetting of a toner even at the time of copying on both faces by using a thermally crosslinkable toner and bringing a heating source into direct contact with the surface of transfer paper on the side to be transferred with a toner image. CONSTITUTION:A fixing roller 31 and a press roller 32 are disposed on both sides of a passage route for the transfer paper in such a manner that the fixing roller 31 and the press roller 32 come into pressurized contact with each other. A cam face of a press cam 34 is brought into pressurized contact with the shaft part of the roller 32 by the energizing force of a spring 35, by which the prescribed pressurizing force is acted on the roller 32. On the other hand, a heater 33 is built in the roller 31 and a thermistor 36 and a temp. fuse 37 provided on the outside of the roller 31 are attached to the heater 33, by which the temp. control is executed. The transfer paper is so fed that the surface thereof to be transferred wit the toner image comes into contact with the roller 31 side. The surface of the transfer paper on the side to be formed with the toner image is thereby brought into direct contact with the heater 33 side. The rapid fixing process is, therefore, executed and the offsetting of the toner is obviated even at the time of copying on both faces.

Description

【発明の詳細な説明】 (技術分野) 本発明は、湿式記録機の定着装置に係り、特に、トナー
像が転写された転写紙を加熱源により加熱してトナー像
の定着を行なうようにした湿式記録機の定着装置に関す
る。
DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a fixing device for a wet type recording machine, and in particular, to a fixing device for a wet type recording machine, the toner image is fixed by heating the transfer paper onto which the toner image has been transferred using a heat source. The present invention relates to a fixing device for a wet recording machine.

(従来技術) 電子写真複写機等の静電記録装置では、静電写真プロセ
スにより感光体上に形成されたトナー像は、転写紙に転
写されて定着され、記録が行なわれる。このトナー像の
定着は、転写紙および未定着のトナー像に熱を加えてト
ナーを溶融し紙面に融着するか、あるいは乾燥させる必
要がある。
(Prior Art) In an electrostatic recording device such as an electrophotographic copying machine, a toner image formed on a photoreceptor by an electrophotographic process is transferred to a transfer paper and fixed, thereby performing recording. To fix this toner image, it is necessary to apply heat to the transfer paper and the unfixed toner image to melt the toner and fuse it to the paper surface, or to dry it.

乾式現像を行なう記録装置の場合には、例えば第2図に
示すように、未定着トナーを担持する転写紙Pの通紙経
路を挟んで定着ローラ1と加圧ローラ1とを互いに圧接
させるようになっている。
In the case of a recording apparatus that performs dry development, for example, as shown in FIG. It has become.

両ローラまたは定着ローラのみの内部には、加熱源3が
内蔵されており、上記定着ローラ1は、ハードローラの
表面にフッ素樹脂をコーティングして形成され、加圧ロ
ーラ2は、その外層がシリコンゴム層とされることによ
って、両ローラ1.2の間にニップ幅が形成され、定着
のための熱を転写紙およびトナーに付与する時間を稼ぐ
ようにしている。
A heating source 3 is built in both rollers or only the fixing roller.The fixing roller 1 is formed by coating the surface of a hard roller with fluororesin, and the pressure roller 2 has an outer layer made of silicon. By forming the rubber layer, a nip width is formed between both rollers 1.2, and time is gained for applying heat for fixing to the transfer paper and toner.

しかしながら、湿式担像を行なう記録装置では、現像剤
が液状であるため、上記構成の定着装置に転写紙を通紙
した場合には、1〜ナーが定着される前に画像が押し広
げられ、画像にならなくなる。
However, in a recording apparatus that performs wet image bearing, the developer is liquid, so when the transfer paper is passed through the fixing device configured as described above, the image is pushed out and spread out before the toner is fixed. It will no longer be an image.

したがって、転写紙を強い圧力で接するローラ対の間に
通紙したり、画像面の側から熱することかできない。
Therefore, it is only possible to pass the transfer paper between a pair of rollers that are in contact with each other under strong pressure, or to heat the transfer paper from the image side.

そのため、湿式現像を行なう記録装量の定着装置として
は、例えば第3図に示すように、転写紙Pの裏面(非画
像部)を内部に加熱源13を右する熱板11の上に沿わ
せ、転写紙Pの表面に軽く接するガイドローラ12によ
りづべりを生じないように搬送し、転写紙Pおよび1〜
ナー像を加熱し乾燥させて定着を行なう方式が従来より
採用されている。しかし、このような装置では、トナー
像の加熱が間接的にしか行なわれないため、定着効率が
低く、処理スピードが遅いという問題がある。
Therefore, as a fixing device for a recording unit that performs wet development, for example, as shown in FIG. The transfer paper P and 1 to 1 are conveyed by guide rollers 12 that lightly touch the surface of the transfer paper P so as not to cause sagging.
Conventionally, a method of fixing a toner image by heating and drying it has been employed. However, in such an apparatus, since the toner image is heated only indirectly, there are problems in that the fixing efficiency is low and the processing speed is slow.

また、近年、省資源等の見地より両面コピーが行なわれ
るようになり、その頻度も漸次高まってきている。両面
コピーの場合、第3図に示すような定着装置で片面複写
済の裏面定着を行なう場合は、すでに定着された裏面の
トナー像が熱板11に接して摺動されるため、熱源13
からの熱によりトナーが軟化して定着力が弱くなり、熱
板11により画像が擦られて画像が流れたり、熱板11
の表面にトナーが付着して熱板が汚れる等の問題点が発
生する。
Furthermore, in recent years, double-sided copying has been performed from the viewpoint of resource saving, etc., and the frequency of copying has gradually increased. In the case of double-sided copying, when fixing the back side of a single-sided copy using a fixing device as shown in FIG.
The heat from the toner softens the toner and weakens its fixing power, causing the image to rub against the hot plate 11 and cause it to run, or the hot plate 11
This causes problems such as toner adhering to the surface of the heating plate and staining the heating plate.

この問題を解決した定着装置として、第4図に示すよう
に、未定着トナー像を担持づる転写紙Pの通紙経路を挟
んで、転写紙の未定着トナー像担持面の裏面側に熱源2
3を内蔵する定着ローラ21を密着させるとともに、ト
ナー像担持面側に転写紙Pを上記の定着ローラ21に密
着させる複数の押しつけローラ22を設(プ、カリ、上
記定着ローラ21の表面に付着したトナーをクリーニン
グするだめのクリ−ニゲパッド24を定着ローラ21の
表面に接して設【月こ定着装置が提案されている。定着
ローラ21および押圧ローラ22は、図示を省略したメ
インモータで駆動される。
As shown in FIG. 4, a fixing device that solves this problem has a heat source installed on the back side of the unfixed toner image bearing surface of the transfer paper, across the paper passing path of the transfer paper P that carries the unfixed toner image.
3, and a plurality of pressing rollers 22 are provided on the toner image bearing surface side to bring the transfer paper P into close contact with the fixing roller 21. A fixing device has been proposed in which a cleaning pad 24 for cleaning the toner that has been removed is provided in contact with the surface of the fixing roller 21.The fixing roller 21 and the pressing roller 22 are driven by a main motor (not shown). Ru.

この方式によれば、転写紙Pの通紙スピードと定着ロー
ラ21および押付はローラ22の回転線速度とが同じ速
度であるため、転写面の擦れは生しない。しかし・、高
画像111度を得るために転写紙へのトナー付@量を増
加したり、単位時間当たりのコピ一枚数を高くしたりし
た場合には、乾燥性が低下し、両面コピ一時、先に画像
が転写され定着済の画像面が定着ローラ21に密着する
ので、定着された1〜ナーが溶融してしまうという不具
合を生じる。この汚れがクリーニングされることなく転
写紙に接触すると転写紙に再オフツセトされてしまうた
めクリーニングパッド24によりクリーニングしている
が、定着ローラ21に付着するトナーが多いと、上記ク
リーニングパッド24と定着ローラ21との接触し始め
る部分25にトナーが溜り固着して駆動時の抵抗となり
、駆動ギヤの破損といった不具合や、定着ローラ21上
の固着]−ナーにより転写紙が浮き、定着不良、定着ム
ラといった不都合が発生する。
According to this method, the paper passing speed of the transfer paper P and the rotating linear speed of the fixing roller 21 and the pressing roller 22 are the same speed, so that no rubbing occurs on the transfer surface. However, if you increase the amount of toner applied to the transfer paper or increase the number of copies per unit time in order to obtain a high 111 degree image, the drying performance will decrease and double-sided copying will occur temporarily. Since the image surface, on which the image has been transferred and fixed first, comes into close contact with the fixing roller 21, a problem arises in that the fixed 1 to 2 toner are melted. If this dirt comes into contact with the transfer paper without being cleaned, it will be re-offset onto the transfer paper, so cleaning is performed using the cleaning pad 24. However, if there is a large amount of toner adhering to the fixing roller 21, the cleaning pad 24 Toner accumulates and sticks to the part 25 where it starts to make contact with the fixing roller 21, creating resistance during driving, resulting in problems such as damage to the drive gear, and sticking on the fixing roller 21. The toner causes the transfer paper to float, causing poor fixing and uneven fixing. An inconvenience will occur.

(目  的) そこで本発明は、定着処理を迅速に行なうことができる
とともに、両面コピ一時においても、トナーのオフセッ
ト現象をなくすことができるようにした湿式記録機の定
着装置を提供することを目的とする。
(Purpose) Therefore, an object of the present invention is to provide a fixing device for a wet type recording machine that can quickly perform fixing processing and eliminate toner offset phenomenon even during double-sided copying. shall be.

(構  成) 上記目的を達成するため、本発明は、所定のトナーを用
いて現像を行ない、得られたトナー像を転写紙に転写し
、この転写された後の転写紙を加熱源により加熱してト
ナー像の定着を行なうようにした湿式記録機の定着装置
において、担像用のトナーとして、熱架橋性のトナーを
用いるとともに、定着加熱源を、転写紙のトナー像転写
面側に直接接触させるように配置してなることを特徴と
している。
(Structure) In order to achieve the above object, the present invention performs development using a predetermined toner, transfers the obtained toner image onto a transfer paper, and heats the transferred transfer paper with a heat source. In a fixing device of a wet type recording machine that fixes a toner image by using a thermally crosslinkable toner as an image-bearing toner, a fixing heat source is directly applied to the toner image transfer surface of the transfer paper. It is characterized by being arranged so that they are in contact with each other.

このような構成からなる装置においては、トナー像が転
写された転写紙の1〜ナ一像転写面が、定着加熱源によ
り直接的に加熱されてトナー像の定着が行なわれる。こ
のとき、加熱されたトナーは熱架橋性を有するため、加
熱により架橋が促進され、トナー粒子相互間の結び付が
強固になされるようになっている。
In an apparatus having such a configuration, the first to second image transfer surfaces of the transfer paper onto which the toner images have been transferred are directly heated by the fixing heat source to fix the toner images. At this time, since the heated toner has thermal crosslinking properties, the crosslinking is promoted by heating, and the toner particles are firmly bonded to each other.

以下、本発明の実施例を図面に基づいて詳細に説明する
Embodiments of the present invention will be described in detail below with reference to the drawings.

第1図に示すように、未定着トナーを担持する転写紙の
通紙経路を挟んで定着ローラ31と加圧ローラ32とが
互いに圧接するように配置されている。
As shown in FIG. 1, a fixing roller 31 and a pressure roller 32 are arranged so as to be in pressure contact with each other across a paper passing path for transfer paper carrying unfixed toner.

上記加圧ローラ32の軸部には、加圧カム34のカム面
がバネ35の付勢力に基づいて圧接されており、これに
よって、加圧ローラ32に所定の加圧作用力が与えられ
るようになっている。また、該加圧ローラ32の外層は
、シリコンゴム層に形成されており、上記両日−ラ31
.32の間に所定のニップ幅が形成されて定着のための
熱を転写紙およびトナーに付与する時間を稼ぐようにな
されている。
A cam surface of a pressure cam 34 is pressed against the shaft portion of the pressure roller 32 based on the biasing force of a spring 35, so that a predetermined pressure force is applied to the pressure roller 32. It has become. Further, the outer layer of the pressure roller 32 is formed of a silicone rubber layer, and the outer layer of the pressure roller 32 is formed of a silicone rubber layer.
.. A predetermined nip width is formed between the transfer paper and the toner 32 to buy time for applying heat to the transfer paper and toner for fixing.

一方、上記定着ローラ31は、ハードローラの表面にフ
ッ素樹脂をコーティングして形成してなるものであり、
その内部には、100V750Wの定着加熱源としての
ヒーター33が内蔵されている。このヒーター33には
、定着ローラ31の外部に設置されたサーミスタ36お
よび温度ヒユーズ37が付設されており、これらによっ
て温度制御が行なわれている。また、上記定着ローラ3
1の外周面には、定着風38および塗布フェルト39が
接触するように配設されている。
On the other hand, the fixing roller 31 is formed by coating the surface of a hard roller with fluororesin.
A heater 33 as a fixing heat source of 100V750W is built inside. This heater 33 is attached with a thermistor 36 and a temperature fuse 37 installed outside the fixing roller 31, and temperature control is performed by these. In addition, the fixing roller 3
A fixing air 38 and a coating felt 39 are disposed so as to be in contact with the outer circumferential surface of the roller 1 .

図示を省略した転写紙は、そのトナー像転写面が定着ロ
ーラ31側に接触するように送給されるようになってお
り、これによって、定着加熱源であるヒーター33側に
、転写紙のトナー像転写面側が直接接触されるようにな
っている。
The transfer paper (not shown) is fed so that its toner image transfer surface comes into contact with the fixing roller 31 side, and as a result, the toner on the transfer paper is transferred to the heater 33 side, which is the fixing heat source. The image transfer surface side is brought into direct contact.

本実施例で用いられるトナーは、以下のような熱架橋性
トナーが採用されている。
The toner used in this example is a thermally crosslinkable toner as described below.

まず、レジン(Resin)としては、■ST(スチレ
ン)が50重量部、MMA (メチルメタアクリレート
)が40重量部、DVB(ジビニルベンゼン)が10重
量部含有されるもの、 ■ST(スチレン)が60重量部、MA(メチルアクリ
レート)が35重量部、DVB (ジビニルベンゼン)
が5重量部含有されるもの、■ST(スチレン)が75
重量部、n−BAが20重量部、DVB (ジビニルベ
ンゼン)が5重量部含有されるもの、 が用いられる。
First, the resins are: ■ Contains 50 parts by weight of ST (styrene), 40 parts by weight of MMA (methyl methacrylate), and 10 parts by weight of DVB (divinylbenzene); 60 parts by weight, 35 parts by weight of MA (methyl acrylate), DVB (divinylbenzene)
containing 5 parts by weight, ■ST (styrene) is 75
20 parts by weight of n-BA and 5 parts by weight of DVB (divinylbenzene) are used.

一方、ピグメント(Pigment )としては、モガ
ール上1プリンテツクスv1ラーベン#40.#30、
#20.三菱#44等が用いられる。
On the other hand, the pigments are Mogal Ue 1 Printex v1 Raven #40. #30,
#20. Mitsubishi #44 etc. are used.

そして、このような材料を用いて、レジン(Resin
) 80〜90重量部/ピグメント(Pigment 
)10〜20重量部の混合比で、通常のニーダで混練し
、熱ローラ−(100℃)で3回通しで練ったものを、
ボールミル等により粗粉枠することによって、0.1〜
20μのフラッシングカーボンが得られる。そのフラッ
シングカーボンを100重量部、分散剤としてのアイソ
パー(Isoper)Hを500重量部、極性制御剤と
してのレシチンを5重量部の処方で、ボールミルにより
20時間分散させると、0.3〜5μのトナー粒子を有
する固形分20%のコンクトナーが得られる。
Then, using such materials, resin (Resin
) 80-90 parts by weight/Pigment
) at a mixing ratio of 10 to 20 parts by weight, kneaded in a normal kneader and kneaded three times with a heated roller (100°C).
By coarsely milling with a ball mill etc., the
A flashing carbon of 20μ is obtained. A formulation of 100 parts by weight of the flushing carbon, 500 parts by weight of Isoper H as a dispersant, and 5 parts by weight of lecithin as a polarity control agent was dispersed in a ball mill for 20 hours. A 20% solids compactor with toner particles is obtained.

なお、極性制御剤としては、上記レシチンの他、−CI
を用いた塩化ビニル、塩ビ、酢ビ共重合体、塩化ゴム等
多数のポリマーを採用することができる。
In addition to the above lecithin, -CI
A large number of polymers such as vinyl chloride, vinyl chloride, vinyl acetate copolymer, and chlorinated rubber can be employed.

このようにして作成したコンクトナーをアイソパーHに
より50y/lの割合いで希釈化し、これにより得られ
た現像液をリコー製複写機CT−5085用いて、画像
形成を行ない、第1図に示す定着装置により定着を行な
った。その場合の定着条件は、定着温度140〜180
℃、線速度228 era/ secとして、50万枚
の連続コピーを行なった所、ローラ汚れや画像オフセッ
ト等の汚れは全く発生しなかった。
The compact toner thus prepared was diluted with Isopar H at a ratio of 50 y/l, and the resulting developer was used to form an image using a Ricoh copying machine CT-5085. Fixing was carried out using a device. In that case, the fixing conditions are a fixing temperature of 140 to 180.
℃ and linear speed of 228 era/sec, 500,000 sheets were continuously copied, and no stains such as roller stains or image offset occurred.

すなわち、上記トナーのフロテスターにおける流出特性
は、第5図で示すように、加熱途中の所定領域において
流出量がほぼ一定化される熱架橋領域を有するものであ
り、この熱架橋性領域において、トナー粒子どうしの架
橋が行なわれる。その結果、トナー画像が強化され、ト
ナー画像に直接熱を加えたり加圧力を与えたりしても、
画像はそのまま維持される。
That is, as shown in FIG. 5, the outflow characteristics of the toner in the float tester have a thermal crosslinking area where the outflow amount is approximately constant in a predetermined area during heating, and in this thermal crosslinkable area, Crosslinking of toner particles occurs. As a result, the toner image is strengthened, even when heat or pressure is applied directly to the toner image.
The image will remain intact.

また、定@温度140〜180℃で、線速度418mm
/secにアップして50万枚の連続コピーを行なって
も、同様にローラ汚れや画像オフセット等の汚れは全く
発生しなかった。
Also, at a constant temperature of 140 to 180℃, the linear speed is 418mm.
Even when 500,000 sheets of continuous copying were performed at a speed of up to 100 mm/sec, no stains such as roller stains or image offset occurred.

第6図に示すような流出特性を有する現像液でも、良好
な画像が得られたが、第5図に示す流出特性を有する現
像液の方がより大きな熱架橋性領域を有するため、好ま
しいといえる。
Good images were obtained even with the developer having the flow-off characteristics shown in FIG. 6, but the developer having the flow-off characteristics shown in FIG. 5 is preferable because it has a larger thermally crosslinkable area. I can say that.

(効  果) 以上述べたように、本発明による湿式記録機は、現像用
のトナーとして、定着時の加熱によりトナー粒子相互間
の結び付が強固になされるように、熱架橋性のトナーを
用いるとと同時に、定着用の加熱源を転写紙のトナー像
転写面側に直接接触させるように配置してなるから、定
着処理を迅速に行なうことができるとともに、両面コピ
一時にも1〜ナーのオフセラiへ現象をなくすことがで
き、非常に良好な定着画像を得ることができる。
(Effects) As described above, the wet recording machine according to the present invention uses a thermally crosslinkable toner as a developing toner so that the toner particles are firmly bonded to each other by heating during fixing. At the same time, the heat source for fixing is placed in direct contact with the toner image transfer surface of the transfer paper, so that the fixing process can be carried out quickly, and even when double-sided copying, one to two toner This phenomenon can be eliminated and very good fixed images can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例における定着装置の側面説明
図、第2図、第3図および第4図は一般の定着装置の側
面説明図、第5図および第6図は本発明に用いるトナー
の流出特性を現した線図である。 31・・・定着ローラ、32・・・加圧ローラ、33・
・・定着加熱源。 悌5図 第6図 ジ二  度  (・と)
FIG. 1 is an explanatory side view of a fixing device according to an embodiment of the present invention, FIGS. 2, 3, and 4 are side views of a general fixing device, and FIGS. 5 and 6 are explanatory side views of a fixing device according to an embodiment of the present invention. FIG. 3 is a diagram showing outflow characteristics of toner used. 31... Fixing roller, 32... Pressure roller, 33...
...Fusing heat source. Figure 5 Figure 6 Jiji degree (・to)

Claims (1)

【特許請求の範囲】[Claims] 所定のトナーを用いて現像を行ない、得られたトナー像
を転写紙に転写し、この転写された後の転写紙を加熱源
により加熱してトナー像の定着を行なうようにした湿式
記録機の定着装置において、現像用のトナーとして、熱
架橋性のトナーを用いるとともに、定着加熱源を、転写
紙のトナー像転写面側に直接接触させるように配置して
なることを特徴とする湿式記録機の定着装置。
A wet type recording machine that performs development using a specified toner, transfers the resulting toner image onto transfer paper, and heats the transferred transfer paper with a heat source to fix the toner image. A wet recording machine characterized in that a fixing device uses a thermally crosslinkable toner as a developing toner, and a fixing heat source is arranged so as to be in direct contact with the toner image transfer surface side of transfer paper. fixing device.
JP62139426A 1987-06-03 1987-06-03 Fixing device for wet recording machine Expired - Lifetime JP2606843B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62139426A JP2606843B2 (en) 1987-06-03 1987-06-03 Fixing device for wet recording machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62139426A JP2606843B2 (en) 1987-06-03 1987-06-03 Fixing device for wet recording machine

Publications (2)

Publication Number Publication Date
JPS63303382A true JPS63303382A (en) 1988-12-09
JP2606843B2 JP2606843B2 (en) 1997-05-07

Family

ID=15244924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62139426A Expired - Lifetime JP2606843B2 (en) 1987-06-03 1987-06-03 Fixing device for wet recording machine

Country Status (1)

Country Link
JP (1) JP2606843B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572050A3 (en) * 1989-12-13 1994-11-09 Siemens Nixdorf Inf Syst Electrofotographic printing apparatus for printing on both sides of an endless paper web, comprising a thermal fixing unit.
US9588464B2 (en) 2013-06-28 2017-03-07 Xeikon IP B.V. Digital printing apparatus and printing process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6148169A (en) * 1998-10-06 2000-11-14 Ricoh Company, Ltd. Device for fixing an image on a recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322440A (en) * 1975-11-20 1978-03-01 Canon Inc Fixing device f or wet typeelectro-photographic system
JPS548532A (en) * 1977-06-22 1979-01-22 Toray Industries Wet toner with good fixability

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322440A (en) * 1975-11-20 1978-03-01 Canon Inc Fixing device f or wet typeelectro-photographic system
JPS548532A (en) * 1977-06-22 1979-01-22 Toray Industries Wet toner with good fixability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572050A3 (en) * 1989-12-13 1994-11-09 Siemens Nixdorf Inf Syst Electrofotographic printing apparatus for printing on both sides of an endless paper web, comprising a thermal fixing unit.
US9588464B2 (en) 2013-06-28 2017-03-07 Xeikon IP B.V. Digital printing apparatus and printing process

Also Published As

Publication number Publication date
JP2606843B2 (en) 1997-05-07

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