JPH0439075B2 - - Google Patents
Info
- Publication number
- JPH0439075B2 JPH0439075B2 JP57161915A JP16191582A JPH0439075B2 JP H0439075 B2 JPH0439075 B2 JP H0439075B2 JP 57161915 A JP57161915 A JP 57161915A JP 16191582 A JP16191582 A JP 16191582A JP H0439075 B2 JPH0439075 B2 JP H0439075B2
- Authority
- JP
- Japan
- Prior art keywords
- intermediate transfer
- transfer
- toner image
- transfer body
- transferred
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 35
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 13
- 239000010410 layer Substances 0.000 description 11
- 230000003068 static effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 108091008695 photoreceptors Proteins 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect 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
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
- G03G15/162—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support details of the the intermediate support, e.g. chemical composition
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Exposure Control For Cameras (AREA)
Description
【発明の詳細な説明】
本発明は、トナー像を保持する感光体ドラム等
の像保持体と、この像保持体上のトナー像を転写
せしめかつこの転写トナー像を記録材等の次の転
写材へ更に転写する中間転写体とを有する記録装
置、特に静電記録又は電子写真複写装置等に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an image carrier such as a photoreceptor drum that holds a toner image, and a method for transferring the toner image on the image carrier and transferring the transferred toner image to a recording material or the like for subsequent transfer. The present invention relates to a recording device, particularly an electrostatic recording or electrophotographic copying device, having an intermediate transfer body for further transferring onto a material.
従来、静電記録、電子写真等の記録装置におい
ては、感光体ドラム等の像保持体上に静電荷像を
形成し、これをトナーおよび必要に応じてキヤリ
アを混合した現像剤によつて現像し、得られたト
ナー像を例えば静電的に転写シート上に転写し、
更に定着するというプロセスに基づいて画像を形
成している。 Conventionally, in recording devices such as electrostatic recording and electrophotography, an electrostatic charge image is formed on an image carrier such as a photoreceptor drum, and this is developed using a developer mixed with toner and carrier as necessary. and transfer the obtained toner image onto a transfer sheet, for example electrostatically,
Images are formed based on the process of further fixing.
しかしながらトナー像を例えばコロナ放電器の
ような転写電極によつて静電的に転写シート（記
録材）上に転写する場合、電界の乱れが伴い、ト
ナー像の解像力が低下してしまう。また、トナー
として例えば、近時推奨されている導電性磁性ト
ナーなどを用いた場合には、一層の電荷の乱れを
生じ、実質的に転写不可能な状態を招く。 However, when a toner image is electrostatically transferred onto a transfer sheet (recording material) using a transfer electrode such as a corona discharger, the electric field is disturbed and the resolution of the toner image is reduced. Furthermore, when a conductive magnetic toner, which has been recently recommended, is used as the toner, further charge disturbance occurs, resulting in a state in which transfer is virtually impossible.
上記した静電転写による欠点を改良する方法と
して、例えば押圧ローラーなどを用いて転写シー
ト上に押圧転写する方法も試みられたが、転写効
率が悪く、トナー像は約半分の量しか転写されな
いなどの障害がある。 As a method to improve the above-mentioned drawbacks of electrostatic transfer, attempts have been made to press transfer onto a transfer sheet using a pressure roller, but the transfer efficiency is poor and only about half the amount of toner image is transferred. have a disability.
そこで、例えば特公昭46−41679号公報、特公
昭48−22763号公報、特開昭49−78559号公報およ
び米国特許第3993825号明細書等において、ゴム
を転写層とする中間転写体に上記トナー像を押圧
転写し、この転写されたトナー像を熱ローラーを
用いてその加熱溶融下に転写シート上に押圧転
写、定着（転写定着）する方法が提案されてい
る。かかる方法においては、例えばシリコーンゴ
ムまたは弗素ゴムの如く、一方では離型性を有す
ると共に他方では押圧時に微粒子体を付着する性
質を有するゴム系の転写層の表層にトナー像が押
圧転写され、この転写層上のトナー像は熱ローラ
ーなどの加熱体と接触加熱されて溶融し、同時に
給送された転写シート上に押圧転写され、定着さ
れる。即ち、加熱により溶融したトナー像は転写
層のもつ上記離型性に基づき容易に転写シート上
に転写、定着されるから、転写工程によるトナー
像の解像力の低下がなく、しかも高い転写率で転
写が実現されるとしている。 Therefore, for example, in Japanese Patent Publication No. 46-41679, Japanese Patent Publication No. 48-22763, Japanese Unexamined Patent Publication No. 49-78559, and US Pat. A method has been proposed in which an image is transferred by pressure, and the transferred toner image is transferred and fixed (transfer-fixed) onto a transfer sheet while being heated and melted using a heat roller. In such a method, a toner image is transferred by pressure onto the surface layer of a rubber-based transfer layer, such as silicone rubber or fluoro rubber, which has releasability on the one hand and has the property of adhering fine particles when pressed. The toner image on the transfer layer is heated and melted by contact with a heating body such as a heat roller, and is transferred under pressure onto a transfer sheet fed at the same time and fixed. In other words, the toner image melted by heating is easily transferred and fixed onto the transfer sheet based on the above-mentioned releasability of the transfer layer, so there is no reduction in the resolution of the toner image due to the transfer process, and moreover, the transfer rate is high. is expected to be realized.
しかしながら、この種の中間転写体を用いる公
知の装置においては、特に上記押圧転写がトナー
粒子に対するゴム層（転写層）の粘着力にのみ依
存して行なわれるために、転写率が未だ充分とは
言えない。そして、ゴム層の汚れや疲労、摩耗等
によりその粘着力自体が劣化し、転写性能が悪く
なることがある。 However, in known devices using this type of intermediate transfer body, the transfer rate is still insufficient, especially because the pressure transfer is performed solely depending on the adhesive force of the rubber layer (transfer layer) to the toner particles. I can not say. Then, due to dirt, fatigue, abrasion, etc. of the rubber layer, its adhesive strength itself may deteriorate, resulting in poor transfer performance.
本発明は、かかる事情に鑑みてなされたもので
あり、その目的とするところは、像保持体上に形
成されたトナー像を高効率で中間転写体へ転写
し、さらにこの転写体上のトナー像を例えば転写
シート等の記録材上に熱転写することができる中
間転写体を提供することにある。 The present invention has been made in view of the above circumstances, and its purpose is to transfer a toner image formed on an image carrier to an intermediate transfer member with high efficiency, and to further transfer the toner image formed on the image carrier to an intermediate transfer member. An object of the present invention is to provide an intermediate transfer body capable of thermally transferring an image onto a recording material such as a transfer sheet.
この目的は本発明の記録装置によつて達成され
る。 This objective is achieved by the recording device of the invention.
即ち、本発明は、トナー像を保持する像保持体
と、この像保持体上のトナー像を転写せしめかつ
この転写トナー像を次の転写材へ更に転写する中
間転写体とを有する記録装置において、
前記中間転写体が、筒状絶縁性基材とその外周
面に設けられた粘着層とによつて中空のロール状
に構成され、
前記像保持体からのトナー像の転写位置にて前
記中間転写体の内周面に対しトナー像の電荷とは
逆極性の電荷を放出せしめる放電手段が、前記中
間転写体の内部空間に配され、
接地された除電手段が、前記中間転写体の回転
方向の前記トナー像転写位置より下流側でかつ転
写トナー像を前記転写材へ転写する位置より上流
側の前記内部空間内の位置に配され、
前記中間転写体が加熱手段を内蔵し、
前記放電手段と前記像保持体の基材との間に、
前記の電荷放出のための高圧電源が接続され、
前記中間転写体から前記転写材へのトナー像転
写が、この転写材を前記中間転写体に圧着する圧
着ロールによつてなされ、かつ、前記加熱手段に
よりトナー像の転写と定着とが同時に行われるよ
うに構成されていることを特徴とする記録装置に
係る。 That is, the present invention provides a recording apparatus having an image carrier that holds a toner image, and an intermediate transfer member that transfers the toner image on the image carrier and further transfers this transferred toner image to the next transfer material. , the intermediate transfer body is configured in the shape of a hollow roll by a cylindrical insulating base material and an adhesive layer provided on the outer peripheral surface thereof, and the intermediate transfer body is formed at a transfer position of the toner image from the image carrier. Discharging means for discharging charges having a polarity opposite to those of the toner image to the inner circumferential surface of the transfer body is disposed in the internal space of the intermediate transfer body, and a grounded charge eliminating means is disposed in a direction of rotation of the intermediate transfer body. disposed in the internal space downstream of the toner image transfer position and upstream of the transfer toner image transfer position to the transfer material, the intermediate transfer body has a built-in heating means, and the discharging means and the base material of the image carrier,
The high-voltage power source for charge discharge is connected, the toner image is transferred from the intermediate transfer body to the transfer material by a pressure roll that presses the transfer material to the intermediate transfer body, and the heating The present invention relates to a recording apparatus characterized in that the toner image is transferred and fixed simultaneously by a means.
本発明は、上記の構成により、次の効果を奏す
る。 The present invention has the following effects due to the above configuration.
(イ) 放電手段が像保持体から中間転写体へのトナ
ー像転写位置に在ることと、更にロール状中間
転写体が加熱手段を内蔵していることより、転
写効率が高い。(a) Transfer efficiency is high because the discharging means is located at the toner image transfer position from the image carrier to the intermediate transfer member and the roll-shaped intermediate transfer member has a built-in heating means.
(ロ) 中間転写体の内部空間に放電手段、除電手段
及び加熱手段を配することにより、装置をコン
パクトにできる。(b) By arranging the discharging means, static eliminating means, and heating means in the internal space of the intermediate transfer body, the apparatus can be made compact.
(ハ) 中間転写体がロール状であるので、その周速
を大きくして高速転写が可能である。(c) Since the intermediate transfer member is roll-shaped, high-speed transfer is possible by increasing its circumferential speed.
(ニ) 圧着ロールと加熱手段とによつて中間転写体
から転写材へのトナー像の転写及び転写トナー
像の定着を同時に行うので、転写と定着とが確
実である。(d) Transfer and fixing of the transferred toner image are performed simultaneously with the transfer of the toner image from the intermediate transfer body to the transfer material using the pressure roll and the heating means, so that the transfer and fixing are reliable.
(ホ) 上記(イ)の効果に加えて、中間転写体を絶縁性
にしているので、放電手段による像保持体への
チヤージが効率的であり、転写効率が更に向上
する。(e) In addition to the effect of (a) above, since the intermediate transfer member is made insulative, the charge to the image carrier by the discharging means is efficient, and the transfer efficiency is further improved.
以下、第１図〜第９図によつて参考例を説明す
る。 Reference examples will be explained below with reference to FIGS. 1 to 9.
まず第１図について、ベルト方式の中間転写体
を有する電子写真複写装置を概略的に示す。 First, referring to FIG. 1, an electrophotographic copying apparatus having a belt-type intermediate transfer member is schematically shown.
セレン、有機光導電物質等からなる感光層を有
する感光体ドラム１の周囲には、公知のコロナ帯
電器及び露光系を容した静電潜像形成部２と、現
像スリーブ３ａ内の磁石で穂立ちされかつ厚み規
制板３ｃで厚み規制されながら導電性磁性トナー
３ｂを感光体ドラム１へ送出する現像器３とが配
されている。ドラム１上の静電潜像による逆電荷
がトナーに誘起されるので、トナー粒子は静電潜
像の電荷量に比例して順次ドラム１上へ移動、吸
着され、そこに所定パターンのトナー像が形成さ
れ、現像が行なわれる。 Around the photosensitive drum 1, which has a photosensitive layer made of selenium, an organic photoconductive substance, etc., there is an electrostatic latent image forming section 2 containing a known corona charger and an exposure system, and a magnet in a developing sleeve 3a. A developing device 3 is disposed in an upright position and delivers conductive magnetic toner 3b to the photoreceptor drum 1 while its thickness is regulated by a thickness regulating plate 3c. Since a reverse charge is induced in the toner by the electrostatic latent image on the drum 1, the toner particles are sequentially moved and attracted onto the drum 1 in proportion to the amount of charge of the electrostatic latent image, and a predetermined pattern of toner image is formed thereon. is formed and development is performed.
このトナー像は次に、ドラム１に対し所定圧力
（約0.5Kg／cm以下）で転写ロール４によつて接触
せしめられている中間転写ベルト５上へ押圧転写
される。この中間転写ベルト５の基材自体は導電
性の例えば金属ベルト材からなり、この金属ベル
ト材上にシリコーンゴム等の粘着層が形成され、
ドラム１上のトナー粒子を剥離する粘着力が付与
されている。 This toner image is then pressed and transferred onto the intermediate transfer belt 5 which is brought into contact with the drum 1 by a transfer roll 4 at a predetermined pressure (approximately 0.5 kg/cm or less). The base material of the intermediate transfer belt 5 itself is made of a conductive metal belt material, and an adhesive layer such as silicone rubber is formed on the metal belt material.
Adhesive force is provided to peel off the toner particles on the drum 1.
ベルト５は上記の転写ロール４、内部にヒータ
ーランプ（図示せず）を容した転写定着ロール
６、支持ローラー７にかけてエンドレスに配され
ている。押圧転写部８で中間転写ベルト５の表面
粘着層に剥離されたトナー粒子はそこに保持され
ながら、圧着ロール９へ送られ、ここで予備加熱
を受けてベルト５から再び剥離され易い状態とな
される。転写定着部１０では、ヒーターランプ
（図示せず）を容した圧着ロール９が下側から圧
接せしめられ、この圧接域に上記ベルト５と複写
紙１１とが同時に通されることによつて、紙加熱
を行ないながらベルト５上のトナー粒子が複写紙
１１上へ転写され、かつ同時に定着される。 The belt 5 is arranged endlessly over the transfer roll 4, a transfer fixing roll 6 containing a heater lamp (not shown) therein, and a support roller 7. The toner particles peeled off by the surface adhesive layer of the intermediate transfer belt 5 at the pressure transfer section 8 are held there and sent to the pressure roll 9, where they are preheated and made easy to peel off from the belt 5 again. Ru. In the transfer fixing section 10, a pressure roll 9 containing a heater lamp (not shown) is pressed from below, and the belt 5 and copy paper 11 are passed through this pressure area at the same time. While heating, the toner particles on the belt 5 are transferred onto the copy paper 11 and fixed at the same time.
なお、図中の１２はクリーニングローラー等か
らなるクリーニング部、１３は除電ランプ等を容
した除電器である。 In addition, 12 in the figure is a cleaning section consisting of a cleaning roller etc., and 13 is a static eliminator containing a static eliminating lamp etc.
第１図の装置において注目すべき構成は、第２
図に明示する如く、感光層１４と金属基材１５と
からなる感光体ドラム１の基材１５にバイアス用
の直流電源１６（500〜2000V）が接続され、か
つ粘着層１７と金属ベルト材１８とからなる中間
転写ベルト５のベルト材１８に接した例えば導電
性ゴムや少なくとも表層が導体で内部に弾性体を
有する転写ロール４が接地されていることであ
る。従つて、感光体ドラム１の基材と中間転写ベ
ルト５の導電層１８との間には、押圧転写位置に
て上記バイアスが印加されることになる。この結
果、ドラム１上のトナー像は、ベルト５の粘着層
１７による粘着力と共に上記バイアスによる静電
力（ベルト５に与えられるトナー粒子をドラム１
方向へ移動させるように働く静電界）の相乗作用
で、ベルト５の粘着層１７上に充分かつ効果的に
吸着されるかた、押圧転写部での転写率を大幅に
高め、ひいては転写定着後の画像濃度も向上させ
ることができる。なお、粘着層１７の厚みを変え
ることによつて上記静電力をコントロールするこ
とができる。 The noteworthy structure of the device shown in Fig. 1 is the second
As clearly shown in the figure, a bias DC power source 16 (500 to 2000 V) is connected to the base material 15 of the photoreceptor drum 1, which consists of a photosensitive layer 14 and a metal base material 15, and an adhesive layer 17 and a metal belt material 18. The transfer roll 4, which is in contact with the belt material 18 of the intermediate transfer belt 5 made of, for example, conductive rubber or has at least a conductive surface layer and an elastic body inside, is grounded. Therefore, the bias is applied between the base material of the photosensitive drum 1 and the conductive layer 18 of the intermediate transfer belt 5 at the pressure transfer position. As a result, the toner image on the drum 1 is formed with the adhesive force due to the adhesive layer 17 of the belt 5 and the electrostatic force due to the bias (the toner particles applied to the belt 5 are transferred to the drum 1).
Due to the synergistic effect of the electrostatic field (which acts to move the image in the direction of The image density can also be improved. Note that the electrostatic force can be controlled by changing the thickness of the adhesive layer 17.
第３図は、中間転写ベルト５の導電層１８自体
を接地した例を示すが、このように構成しても第
１図及び第２図の場合と同様の効果を奏し得る。
但、押圧ロール４は必ずしも導電性でなくてよ
く、非導電性（絶縁）材料からなつていても差支
えない。 FIG. 3 shows an example in which the conductive layer 18 itself of the intermediate transfer belt 5 is grounded, but even with this configuration, the same effects as in FIGS. 1 and 2 can be achieved.
However, the press roll 4 does not necessarily have to be electrically conductive, and may be made of a non-conductive (insulating) material.
第４図及び第５図は、ロール状の中間転写体２
５を有する電子写真複写機を示すものである。 FIGS. 4 and 5 show a roll-shaped intermediate transfer body 2.
5 shows an electrophotographic copying machine having the following.
この例では、表面側にシリコーンゴム等の粘着
層２７を有する金属ロール材２８からなん中間転
写ロール２５の金属ロール材２８とドラム１の基
材１５との間に500〜2000Vの直流バイアス電源
１６が接続され、これによつてドラム１上のトナ
ー粒子に対する静電的吸着力を付加している。な
お、中間転写ロール２５と中間転写ロール２５に
圧接し、転写紙への転写定着を行なう圧着ロール
９にはヒーターを内蔵させるのが望ましい。 In this example, a DC bias power source 16 of 500 to 2000 V is connected between the metal roll material 28 of the intermediate transfer roll 25 and the base material 15 of the drum 1. are connected, thereby applying an electrostatic attraction force to the toner particles on the drum 1. Note that it is preferable that a heater is built into the intermediate transfer roll 25 and the pressure roll 9 that is in pressure contact with the intermediate transfer roll 25 and performs transfer and fixation onto the transfer paper.
第６図及び第７図は、ベルト状の中間転写体３
５を用いた例を示すものであるが、このベルト３
５は表面側の粘着層１７と裏面側の絶縁性材（例
えばポリイミドフイルム）３８とからなつてい
る。 6 and 7 show a belt-shaped intermediate transfer body 3
This shows an example using belt 3.
5 consists of an adhesive layer 17 on the front side and an insulating material (for example, polyimide film) 38 on the back side.
従つて、中間転写ベルト３５自体は非導電性
（絶縁性）ではあるが、このベルトに対して金属
製の押圧ロール４が当接せしめられ、この押圧ロ
ール４が直流バイアス電源１６を介して接地され
ている。従つて、ロール４とドラム基材１５との
間に印加されるバイアスによつて、中間転写ベル
ト３５にはトナー粒子を吸着し得る静電力が付与
され、押圧転写の効率が向上することになる。こ
の場合、ベルト３５の厚みに応じて上記静電力が
適切となるように、バイアス電圧をコントロール
することができる。なお、上記ロール４は矢印３
０で示す如く、往復移動可能に構成され、必要に
応じてベルト３５をドラム１上へ押圧するように
なつている（これは、第１図のロール４について
も同様にしてよい。）。 Therefore, although the intermediate transfer belt 35 itself is non-conductive (insulating), the metal press roll 4 is brought into contact with this belt, and this press roll 4 is grounded via the DC bias power supply 16. has been done. Therefore, the bias applied between the roll 4 and the drum base material 15 provides the intermediate transfer belt 35 with an electrostatic force capable of adsorbing toner particles, improving the efficiency of pressure transfer. . In this case, the bias voltage can be controlled so that the electrostatic force is appropriate depending on the thickness of the belt 35. Note that the roll 4 is shown by the arrow 3.
As shown by 0, the belt 35 is configured to be movable back and forth, and the belt 35 is pressed onto the drum 1 as necessary (the same may be applied to the roll 4 in FIG. 1).
第８図及び第９図は、ベルト状の中間転写体３
５を矢印方向に往復移動可能な移動ローラー４４
によつてドラム１上へ押圧しながら、押圧転写部
８においてコロナ放電装置４１によつて中間転写
ベルト３５の背面（裏面）に、ドラム１上のトナ
ー粒子と逆極性の電荷を放出せしめる例を示して
いる。 8 and 9 show a belt-shaped intermediate transfer body 3
A moving roller 44 that can reciprocate 5 in the direction of the arrow.
An example is shown in which, while pressing the toner particles onto the drum 1 with It shows.
従つて、この放出された電荷が中間転写ベルト
３５の裏面側に蓄積されるから、このチヤージに
よりドラム１上のトナー粒子がベルト３５上へ吸
着され、粘着層１７の粘着力と相乗してトナー像
の転写を充分にすることができる。第９図に明示
する如く、コロナ放電装置４１は、５〜12KVの
高圧電源４６が接続されたワイヤ電極４２とアー
スプレート４３とからなり、ワイヤ電極４２とア
ースプレート４３及びドラム１の基材１５との間
にコロナ放電を生ぜしめるように構成されたもの
である。この場合、ベルト３５の基材３８はポリ
イミド等の絶縁材料からなつているのが望まし
い。 Therefore, since this discharged electric charge is accumulated on the back side of the intermediate transfer belt 35, the toner particles on the drum 1 are attracted onto the belt 35 due to this charge, and the toner particles are absorbed by the adhesive force of the adhesive layer 17. The image can be transferred sufficiently. As clearly shown in FIG. 9, the corona discharge device 41 consists of a wire electrode 42 and a ground plate 43 to which a high voltage power source 46 of 5 to 12 KV is connected. It is constructed to produce a corona discharge between the two. In this case, the base material 38 of the belt 35 is preferably made of an insulating material such as polyimide.
他方、コロナ放電によつてベルト３５に蓄積さ
れる電荷は必要量以上になると転写定着性が悪く
なるので、押圧転写部８の後段（ロール６の手
前）において、接地された除電ブラシ４５をベル
ト３５の背面に当接若しくは摺接せしめ、電荷を
放出する。これにより、転写トナーに対する静電
的吸着力は転写定着部１０の前に減少するから、
転写定着を容易に行なえる。但、蓄積電荷を減少
させる点では、一点鎖線の如く、押圧転写部８の
手前に除電ブラシ４５Ａを設けてもよい。 On the other hand, if the charge accumulated on the belt 35 due to corona discharge exceeds the required amount, the transfer and fixing performance will deteriorate. It is brought into contact or sliding contact with the back surface of 35, and discharges an electric charge. As a result, the electrostatic adsorption force for the transferred toner decreases before the transfer fixing section 10.
Transfer and fixation can be easily performed. However, in order to reduce the accumulated charge, a static elimination brush 45A may be provided in front of the press transfer section 8, as shown by a chain line.
第１０図は、本発明に係る例を示すものであつ
て、第５図の例と類似の中間転写ロール５５を用
い、第８図及び第９図と同様の放電手段及び除電
手段並びにヒータランプ（図示せず）を内蔵せし
めている。 FIG. 10 shows an example according to the present invention, in which an intermediate transfer roll 55 similar to that in the example in FIG. (not shown) is built-in.
即ち、中間転写ロール５５は表面側の粘着層２
７と望ましくは絶縁性の基材５８とからなり、そ
の内部には押圧転写位置に対向してコロナ放電装
置４１が配され、これによる放電電荷を基材５８
の面に作用させ、ドラム１上のトナー粒子を静電
的に吸着する吸着力を生ぜしめている。これに加
えて、中間転写ロール５５と圧着ロール９とによ
る転写定着部１０の手前位置に、ロール５５の基
材５８に上記放電により蓄積される電荷を放出す
る除電ブラシ４５を摺接させるのが望ましい。即
ち、ロール５５上に転写されたトナー粒子は、除
電ブラシ４５による電荷放出作用で転写定着部１
０の手前で上記静電的吸着力が減少するために、
ロール５５上から剥離され易い状態となるから、
ロール５５と圧着ローラー９とに挟圧され搬送さ
れる複写紙１１への転写、定着操作を行ない易く
することができる。中間転写ロール５５から更に
他の中間転写体への押圧転写に関しても同様であ
る。なお、このような除電ブラシ４５の位置は、
第８図及び第９図の例で述べたと同様に効果のあ
るものである。但、単に電荷を放出するという点
では転写定着部１０の後段位置に除電ブラシ４５
を設けることもできる。 That is, the intermediate transfer roll 55 is attached to the adhesive layer 2 on the surface side.
7 and a preferably insulating base material 58, inside which a corona discharge device 41 is disposed facing the press transfer position, and the discharged charge is transferred to the base material 58.
is applied to the surface of the drum 1 to generate an adsorption force that electrostatically adsorbs the toner particles on the drum 1. In addition, at a position in front of the transfer and fixing unit 10 formed by the intermediate transfer roll 55 and the pressure roll 9, a static elimination brush 45 that releases the electric charge accumulated by the electric discharge is brought into sliding contact with the base material 58 of the roll 55. desirable. That is, the toner particles transferred onto the roll 55 are transferred to the transfer/fixing section 1 by the charge discharging action by the static eliminating brush 45.
Since the electrostatic adsorption force decreases before reaching 0,
Since it is likely to be peeled off from the roll 55,
Transfer and fixing operations to the copy paper 11, which is conveyed while being pinched between the roll 55 and the pressure roller 9, can be facilitated. The same applies to the pressure transfer from the intermediate transfer roll 55 to other intermediate transfer bodies. Note that the position of the static elimination brush 45 is as follows:
This is effective in the same way as described in the examples of FIGS. 8 and 9. However, in terms of simply discharging charges, a static eliminating brush 45 is provided at a downstream position of the transfer fixing section 10.
It is also possible to provide
なお、第１０図の例でも、ロール５５及び９内
にはヒーターを内蔵させているので、転写定着効
率が更に向上する。 In the example shown in FIG. 10, heaters are also built into the rolls 55 and 9, so that the transfer and fixing efficiency is further improved.
以上、本発明を例示したが、上述の例は本発明
の技術的思想に基づいて更に変形が可能である。 Although the present invention has been illustrated above, the above-mentioned example can be further modified based on the technical idea of the present invention.
例えば、転写定着用の複写紙等の複写機に代え
て、上述の中間転写体に接した第２の中間転写体
に転写せしめ、更にこの第２の中間転写体から複
写材に転写してよい。なお、本発明の方式は電子
写真複写機以外の記録装置にも適用可能である。 For example, instead of using a copying machine such as copy paper for transfer and fixing, the image may be transferred to a second intermediate transfer body in contact with the above-mentioned intermediate transfer body, and further transferred from this second intermediate transfer body to a copying material. . Note that the method of the present invention is also applicable to recording devices other than electrophotographic copying machines.
第１図〜第９図は参考例を示すものであつて、
第１図は中間転写ベルトを有する電子写真複写装
置の概略図、第２図は第１図の要部断面図、第３
図は接地方法を変えた場合の第２図と同様の断面
図、第４図は中間転写ロールを有する電子写真複
写装置の概略図、第５図は第４図の要部断面図、
第６図は別の電子写真複写装置の概略図、第７図
は第６図の要部断面図、第８図は更に別の電子写
真複写装置の概略図、第９図は第８図の要部断面
図である。第１０図は、本発明の実施例を示すも
のであつて、中間転写ロール及びその近傍部分の
断面図である。
なお、図面に示されている符号において、１…
…感光体ドラム、３……現像部、４，４４……押
圧ロール又はローラー、５，３５……中間転写ベ
ルト、６……定着ロール、８……押圧転写部、９
……圧着ロール、１０……転写定着部、１１……
記録紙、１４……感光層、１５……基材、１６…
…バイアス電源、１７，２７……粘着層、１８，
２８，３８，５８……基材、２５，５５……中間
転写ロール、４１……コロナ放電器、４５……除
電ブラシ、４６……高圧電源、である。
Figures 1 to 9 show reference examples, and
FIG. 1 is a schematic diagram of an electrophotographic copying apparatus having an intermediate transfer belt, FIG. 2 is a sectional view of the main part of FIG. 1, and FIG.
The figure is a cross-sectional view similar to FIG. 2 when the grounding method is changed, FIG. 4 is a schematic diagram of an electrophotographic copying apparatus having an intermediate transfer roll, and FIG. 5 is a cross-sectional view of the main part of FIG. 4.
FIG. 6 is a schematic diagram of another electrophotographic copying device, FIG. 7 is a sectional view of the main part of FIG. 6, FIG. 8 is a schematic diagram of yet another electrophotographic copying device, and FIG. 9 is a schematic diagram of FIG. It is a sectional view of the main part. FIG. 10 shows an embodiment of the present invention, and is a sectional view of the intermediate transfer roll and its vicinity. In addition, in the symbols shown in the drawings, 1...
... Photosensitive drum, 3 ... Developing section, 4, 44 ... Press roll or roller, 5, 35 ... Intermediate transfer belt, 6 ... Fixing roll, 8 ... Press transfer section, 9
... Pressure roll, 10 ... Transfer fixing section, 11 ...
Recording paper, 14... Photosensitive layer, 15... Base material, 16...
...Bias power supply, 17,27...Adhesive layer, 18,
28, 38, 58... Base material, 25, 55... Intermediate transfer roll, 41... Corona discharger, 45... Static elimination brush, 46... High voltage power supply.
Claims (1)
体上のトナー像を転写せしめかつこの転写トナー
像を次の転写材へ更に転写する中間転写体とを有
する記録装置において、 前記中間転写体が、筒状絶縁性基体とその外周
面に設けられた粘着層とによつて中空のロール状
に構成され、 前記像保持体からのトナー像の転写位置にて前
記中間転写体の内周面に対しトナー像の電荷とは
逆極性の電荷を放出せしめる放電手段が、前記中
間転写体の内部空間に配され、 接地された除電手段が、前記中間転写体の回転
方向の前記トナー像転写位置より下流側でかつ転
写トナー像を前記転写材へ転写する位置より上流
側の前記内部空間内の位置に配され、 前記中間転写体が加熱手段を内蔵し、 前記放電手段と前記像保持体の基材との間に、 前記の電荷放出のための高圧電源が接続され、 前記中間転写体から前記転写材へのトナー像転
写が、この転写材を前記中間転写体に圧着する圧
着ロールによつてなされ、かつ、前記加熱手段に
よりトナー像の転写と定着とが同時に行われるよ
うに構成されていることを特徴とする記録装置。[Claims] 1. A recording device having an image carrier that holds a toner image, and an intermediate transfer member that transfers the toner image on the image carrier and further transfers the transferred toner image to the next transfer material. In the above, the intermediate transfer body is configured in a hollow roll shape by a cylindrical insulating base and an adhesive layer provided on the outer circumferential surface of the intermediate transfer body, and the intermediate transfer body is formed in the shape of a hollow roll by a cylindrical insulating base and an adhesive layer provided on the outer circumferential surface of the intermediate transfer body, and the intermediate transfer body is formed at a position where the toner image is transferred from the image carrier. Discharging means for discharging charges having a polarity opposite to those of the toner image to the inner circumferential surface of the transfer body is disposed in the internal space of the intermediate transfer body, and a grounded charge eliminating means is disposed in a direction of rotation of the intermediate transfer body. disposed in the internal space downstream of the toner image transfer position and upstream of the transfer toner image transfer position to the transfer material, the intermediate transfer body has a built-in heating means, and the discharging means and the base material of the image carrier, the high-voltage power source for discharging the charge is connected, and the toner image transfer from the intermediate transfer body to the transfer material causes the transfer material to be transferred to the intermediate transfer body. 1. A recording apparatus, characterized in that the recording apparatus is configured to use a pressure roller to press the toner image, and to transfer and fix the toner image simultaneously by the heating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57161915A JPS5950474A (en) | 1982-09-17 | 1982-09-17 | Recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57161915A JPS5950474A (en) | 1982-09-17 | 1982-09-17 | Recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5950474A JPS5950474A (en) | 1984-03-23 |
| JPH0439075B2 true JPH0439075B2 (en) | 1992-06-26 |
Family
ID=15744439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57161915A Granted JPS5950474A (en) | 1982-09-17 | 1982-09-17 | Recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950474A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513547B1 (en) * | 1991-04-18 | 1996-07-03 | Hitachi, Ltd. | Electrophotographic recording apparatus |
| EP0510680A3 (en) * | 1991-04-26 | 1993-04-21 | Nec Corporation | Electrophotographic printing apparatus having an endless belt for primary and secondary transfer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5541435A (en) * | 1978-09-20 | 1980-03-24 | Fuji Xerox Co Ltd | Transfer method of toner image in electrophotographic copier |
| JPS5610647B2 (en) * | 1972-09-11 | 1981-03-10 | ||
| JPS56109380A (en) * | 1980-02-05 | 1981-08-29 | Ricoh Co Ltd | Method and device for electrophotographing |
| JPS56147166A (en) * | 1980-04-17 | 1981-11-14 | Konishiroku Photo Ind Co Ltd | Method and apparatus for forming transferred image |
| JPS56154774A (en) * | 1980-04-30 | 1981-11-30 | Toshiba Corp | Transferring apparatus |
| JPS56168674A (en) * | 1980-05-31 | 1981-12-24 | Konishiroku Photo Ind Co Ltd | Image forming method |
| JPS57662A (en) * | 1980-06-03 | 1982-01-05 | Ricoh Co Ltd | Toner image transferring method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610647U (en) * | 1979-06-30 | 1981-01-29 |
-
1982
- 1982-09-17 JP JP57161915A patent/JPS5950474A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610647B2 (en) * | 1972-09-11 | 1981-03-10 | ||
| JPS5541435A (en) * | 1978-09-20 | 1980-03-24 | Fuji Xerox Co Ltd | Transfer method of toner image in electrophotographic copier |
| JPS56109380A (en) * | 1980-02-05 | 1981-08-29 | Ricoh Co Ltd | Method and device for electrophotographing |
| JPS56147166A (en) * | 1980-04-17 | 1981-11-14 | Konishiroku Photo Ind Co Ltd | Method and apparatus for forming transferred image |
| JPS56154774A (en) * | 1980-04-30 | 1981-11-30 | Toshiba Corp | Transferring apparatus |
| JPS56168674A (en) * | 1980-05-31 | 1981-12-24 | Konishiroku Photo Ind Co Ltd | Image forming method |
| JPS57662A (en) * | 1980-06-03 | 1982-01-05 | Ricoh Co Ltd | Toner image transferring method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5950474A (en) | 1984-03-23 |
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