JPH04455A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH04455A JPH04455A JP10130790A JP10130790A JPH04455A JP H04455 A JPH04455 A JP H04455A JP 10130790 A JP10130790 A JP 10130790A JP 10130790 A JP10130790 A JP 10130790A JP H04455 A JPH04455 A JP H04455A
- Authority
- JP
- Japan
- Prior art keywords
- film
- pyroelectric
- heat
- ink
- latent 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 230000002940 repellent Effects 0.000 abstract 2
- 239000005871 repellent Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012800 visualization Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、画像形成装置に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to an image forming apparatus.
従来の技術
従来から複写機、レーザープリンタあるいはファクシミ
リ等に画像形成装置が使用されている。2. Description of the Related Art Image forming apparatuses have been used in copying machines, laser printers, facsimile machines, and the like.
以下従来の画像形成装置について説明する。A conventional image forming apparatus will be described below.
第４−は従来の画像形成装置の概略図である。No. 4- is a schematic diagram of a conventional image forming apparatus.
８４図において、１０は中空ドラム、１１は中空ドラム
１０の外債に形成された電極で接地されている。１２は
電極１１の外側に形成された焦電フィルムである。１３
は中空ドラム１０の内側に設けられたサーマルヘッドで
、画像情報に従い中空ドラム１０の内側より中空ドラム
１０、電極１１を通して焦電フィルム１２の裏面に熱を
付与する。１４はトナー、１５は焦電フィルム１２上に
形成された静１ｔ、潜像をトナー１４によって顕像化す
る現像ローラ、１６は複写紙、１７は転写器で焦電フィ
ルム１２に近接するとともに複写紙１６の複写面の反対
側へ取り付けられる。１８は転写後に焦電フィルム１２
へ付着している残留トナー１９は残留トナー１８を掻き
落としクリーニングするクリーニング器、２０は複写紙
１６に転写されたトナーを定着させる定着器である。In FIG. 84, 10 is a hollow drum, and 11 is grounded by an electrode formed on the outer shell of the hollow drum 10. 12 is a pyroelectric film formed on the outside of the electrode 11. 13
is a thermal head provided inside the hollow drum 10, which applies heat to the back surface of the pyroelectric film 12 from the inside of the hollow drum 10 through the hollow drum 10 and the electrode 11 according to image information. 14 is a toner, 15 is a static image formed on the pyroelectric film 12, a developing roller that visualizes the latent image with the toner 14, 16 is copy paper, and 17 is a transfer device that approaches the pyroelectric film 12 and copies it. It is attached to the opposite side of the paper 16 from the copy side. 18 is the pyroelectric film 12 after transfer
A cleaning device 20 scrapes off the residual toner 18 adhering to the copy paper 16, and a fixing device 20 fixes the toner transferred to the copy paper 16.
以上のように構成された画像形成装置についてその動作
を以下に説明する。The operation of the image forming apparatus configured as described above will be described below.
まず、中空ドラム１０が駆動手段（図示せず。First, the hollow drum 10 is driven by a driving means (not shown).
）によって回転駆動されつつ、焦電フィルム１２は画像
情報に従いサーマルヘッド１３により中空ドラム１０の
内偵１より中空トラム１０、電極１１を通して裏面に熱
か付与される。焦電フィルム１２はこの熱により電荷を
発生し静電潜像が形成される。), heat is applied to the back surface of the pyroelectric film 12 from the inside of the hollow drum 10 through the hollow tram 10 and the electrode 11 by the thermal head 13 according to image information. The pyroelectric film 12 generates charges due to this heat, and an electrostatic latent image is formed.
静電潜像が形成されるのと同時に、焦電フィルム１１表
面上に形成された静電潜像は現像ローラ１５ζ：より顕
像化さｎ、転写器１７により焦電フィルム１２−ヒのト
ナーを複写紙１６に転写し、定着器２０により複写紙１
６へ定着される。At the same time as the electrostatic latent image is formed, the electrostatic latent image formed on the surface of the pyroelectric film 11 is visualized by the developing roller 15ζ, and transferred to the toner on the pyroelectric film 12 by the transfer device 17. is transferred onto the copy paper 16, and the copy paper 1 is transferred by the fixing device 20.
Fixed to 6.
静電潜像が形成された後、焦電フィルム１２上の残留電
荷は自然放電し、焦電フィルム１２の表面に残った残留
トナーはクリーニング器１９によって掻き落とされ、掻
き落とされた残留トナーはクリーニング器１９の内部へ
回収される。After the electrostatic latent image is formed, the residual charge on the pyroelectric film 12 is naturally discharged, and the residual toner remaining on the surface of the pyroelectric film 12 is scraped off by the cleaning device 19, and the scraped off residual toner is It is collected inside the cleaning device 19.
発明が解決しようとする課題
しかしながら前記従来の構成では静電潜像の形成と静電
潜像の顕像化を同時に行い、静電潜像の電荷の劣化によ
る影響を防いでいるが、この同時に行う方法として、サ
ーマルヘッドで中空ドラムの内＜ｇｎより中空トラム、
電極を通して焦電ｍ（りの裏面に熱を付与するため、サ
ーマルヘッドの熱か中空トラム、電極を通る間に拡散し
画質を劣化させるという問題点を有していた。Problems to be Solved by the Invention However, in the conventional configuration described above, the formation of an electrostatic latent image and the visualization of the electrostatic latent image are simultaneously performed to prevent the influence of charge deterioration of the electrostatic latent image. As a method of doing this, the hollow tram is
Since heat is applied to the back side of the pyroelectric film through the electrode, there is a problem in that the heat from the thermal head is diffused while passing through the hollow tram and electrode, degrading the image quality.
課題を解決するための手段
本発明は、前記問題点を解決するため、焦電効笑を■す
る疎水性を持つ焦電＠材へ画像情報に従い％ 帽ｆｉＴ
＊７へ飢を付与する熱付与手段を近接して設け、焦電
部矛４の熱付与手段近接部分へインクを供給するように
した。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a pyroelectric material with hydrophobicity that suppresses pyroelectric effects according to image information.
A heat applying means for applying heat to *7 is provided adjacent to the ink, and ink is supplied to a portion of the pyroelectric spear 4 adjacent to the heat applying means.
作中
本発明は前記した構成により、焦電部材の熱付与手段近
接部分へインクが供給されているため静電潜像の形成と
静電潜像の顕像化が同時に行なえ、かつ熱を焦電部材へ
直接付与することか可能となる。According to the present invention, with the above-described configuration, ink is supplied to the portion of the pyroelectric member near the heat applying means, so that formation of an electrostatic latent image and visualization of the electrostatic latent image can be performed simultaneously, and the heat can be focused. It becomes possible to apply it directly to electrical components.
実施例
第１図は不発明の一実施例における画像形成装置の概略
図、Ｖ％２図は本発明の一実施例における画４１１１形
成装置の要Ｎ斜視図である。第１図、第２図において、
１はドラム、２はドラムｌの外側に形成さｎた電極で接
地されている。３は電極２の外側に形成された焦電フィ
ルムで、その表面には、例えばフッソ樹脂や、シリコン
樹脂のごとき発水性物質かコーティングされている。４
は焦電フィルム３の表面に近接して設けられたサーマル
ヘッドで、画像情報に従い焦電フィルム３に熱を付与す
る。５は絶縁インク、６は絶縁インク５で満たされたイ
ンクタンク、７は複写紙、８は転写ローラーで複写紙７
を焦電フィルム３の方向へ付勢している。Embodiment FIG. 1 is a schematic diagram of an image forming apparatus according to an embodiment of the invention, and FIG. 2 is a perspective view of an image 4111 forming apparatus according to an embodiment of the invention. In Figures 1 and 2,
1 is a drum, and 2 is grounded through an electrode formed on the outside of the drum. 3 is a pyroelectric film formed on the outside of the electrode 2, the surface of which is coated with a hydrophobic substance such as fluorocarbon resin or silicone resin. 4
is a thermal head provided close to the surface of the pyroelectric film 3, which applies heat to the pyroelectric film 3 according to image information. 5 is insulating ink, 6 is an ink tank filled with insulating ink 5, 7 is copy paper, 8 is a transfer roller and copy paper 7
is urged toward the pyroelectric film 3.
以上のように構成された画像形成装置について以下その
動作を説明する。The operation of the image forming apparatus configured as described above will be described below.
ドラム１が駆動手段（図示せず。）によって回転駆動さ
ｎつつ、焦電フィルム３は画像情報に従いサーマルヘッ
ド４により熱が付与される。焦電フィルム３はこの熱に
より電荷を発生し静ｔＩＷ像が形成される。While the drum 1 is rotationally driven by a driving means (not shown), heat is applied to the pyroelectric film 3 by a thermal head 4 in accordance with image information. The pyroelectric film 3 generates charges due to this heat, and a static tIW image is formed.
絶縁インク５は焦電フィルム３のサーマルヘッド４の近
接部分へ供給されており、静電潜像が形成されるのと同
時に、焦電フィルム３の表面は電荷により絶縁インク５
が付着する。電荷のない部分は焦電フィルム３表面にコ
ーティングされた発水性物質により絶縁インク５は付着
しない。The insulating ink 5 is supplied to a portion of the pyroelectric film 3 near the thermal head 4, and at the same time as an electrostatic latent image is formed, the surface of the pyroelectric film 3 is supplied with the insulating ink 5 due to the electric charge.
is attached. The insulating ink 5 does not adhere to the uncharged portions due to the hydrophobic material coated on the surface of the pyroelectric film 3.
絶縁インク５の付着後、焦電フィルム３の表面には、複
写紙７が転写ローラー８により当接され、焦電フィルム
３の表面に付着した絶縁インク５を複写紙７に転写する
。After the insulating ink 5 is attached, a copy paper 7 is brought into contact with the surface of the pyroelectric film 3 by a transfer roller 8, and the insulating ink 5 attached to the surface of the pyroelectric film 3 is transferred onto the copy paper 7.
以上か、本発明の一実施例における画像形成装置の１サ
イクルを示したものであるか、次に現像プロセスを詳細
に説明する。The above shows one cycle of the image forming apparatus in one embodiment of the present invention.Next, the developing process will be explained in detail.
第３１図は、静電潜像の現像プロセスの説明図である。FIG. 31 is an explanatory diagram of a developing process of an electrostatic latent image.
インクタンク６は絶縁インク５で満されており、絶縁イ
ンク５の液面は焦電フィルム３およびサーマルヘッド４
に接触している。絶縁インク５は毛細管現象により焦電
フィルム３のサーマルヘッド４の近接部分へ供給されて
いる。この状態で焦電フィルム３に熱が付与され電荷を
発生すると電荷により絶縁インク５が付着する。一方電
荷のない部分は焦電フィルム３表面にコーティングされ
た発水性物質が液体をはじくので絶縁インク５は付着し
ない。The ink tank 6 is filled with insulating ink 5, and the liquid level of the insulating ink 5 reaches the pyroelectric film 3 and the thermal head 4.
is in contact with. The insulating ink 5 is supplied to a portion of the pyroelectric film 3 near the thermal head 4 by capillary action. In this state, when heat is applied to the pyroelectric film 3 and electric charges are generated, the insulating ink 5 adheres to the pyroelectric film 3 due to the electric charges. On the other hand, the insulating ink 5 does not adhere to the uncharged portions because the hydrophobic substance coated on the surface of the pyroelectric film 3 repels liquid.
本実施例では、絶縁インク５が焦電フィルム３のサーマ
ルヘッド４の近接部分へ供給されているため静電潜像の
形成と静電潜像の顕像化が同時に行なえ、かつ熱を焦電
部材へ直接付与することが可能となる。In this embodiment, since the insulating ink 5 is supplied to a portion of the pyroelectric film 3 close to the thermal head 4, formation of an electrostatic latent image and visualization of the electrostatic latent image can be performed simultaneously, and heat can be transferred to the pyroelectric film 3. It becomes possible to apply it directly to the member.
なお本実施例では、インクに絶縁インクを用いたか帯電
トナーを含有する液体媒体等を用いても実現可能である
。また、焦電部材の表向に発水性物質をコーティングし
たか発＊、牲をもつ焦電部材を用いても実現可能である
。Note that this embodiment can also be realized by using an insulating ink or a liquid medium containing charged toner. It is also possible to realize this by using a pyroelectric member whose surface is coated with a hydrophobic substance.
発明の効果
以上のように本発明は、焦電効果を有する疎水箆を持つ
焦電部材へ画像情報に従い焦電部材へ熱を付与する熱付
与手段を近接して設け、インクを焦電部材の熱付与手段
近接部分へ供給するようにしたことにより、インクが焦
電部材の熱付与手段近接部分へ供給されているため静電
潜像の形成と静電潜像の顕像化が同時に行なえ、かつ熱
を焦電部材−１直接付与することが可能となり、熱付与
手段の熱の拡散をりな（し画質を向上することができる
。Effects of the Invention As described above, the present invention provides a heat applying means for applying heat to a pyroelectric member having a hydrophobic head having a pyroelectric effect in accordance with image information, and ink is applied to the pyroelectric member. Since the ink is supplied to the portion of the pyroelectric member near the heat applying means, the formation of an electrostatic latent image and the visualization of the electrostatic latent image can be performed at the same time. In addition, it becomes possible to directly apply heat to the pyroelectric member-1, thereby reducing the diffusion of heat from the heat applying means and improving image quality.
第１図は不発明の一実施例における画像形成装置の概略
図、第２図は本発明の一実施例における画像形成装置の
要部斜視図、第３図は、静電潜像の現像プロセスの説明
図、第４図は従来の画像形成装置の概略図である。
■・・・ドラム
３・・・焦電フィルム
５・・・絶縁インク
７・・・複写紙
９・・・発熱部
１・・・を極
３・・・サーマルヘッド
５・・・現像ローラ
７・・・転写器
２・・・電極
４・・・サーマルヘッド
６・・・インクタンク
８・・・転写ローラー
Ｏ・・・中空ドラム
２・・・焦電フィルム
４・・・トナー
６・・・複写紙
８・・・残留トナー
１９・・・クリーニング郡
２０・・・定着工
第１図FIG. 1 is a schematic diagram of an image forming apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of essential parts of an image forming apparatus according to an embodiment of the present invention, and FIG. 3 is a developing process of an electrostatic latent image. FIG. 4 is a schematic diagram of a conventional image forming apparatus. ■...Drum 3...Pyroelectric film 5...Insulating ink 7...Copy paper 9...Heating part 1...Pole 3...Thermal head 5...Developing roller 7... ... Transfer device 2 ... Electrode 4 ... Thermal head 6 ... Ink tank 8 ... Transfer roller O ... Hollow drum 2 ... Pyroelectric film 4 ... Toner 6 ... Copying Paper 8...Residual toner 19...Cleaning group 20...Fuser diagram 1
Claims (1)
焦電部材に画像情報に従い熱を付与する熱付与手段とを
有し、前記熱付与手段を前記焦電部材に近接して設け、
前記焦電部材の前記熱付与手段近接部分へインクを供給
するようにしたを特徴とする画像形成装置。（２）前記
熱付与手段にサーマルヘッドを用いたことを特徴とする
特許請求の範囲第１項記載の画像形成装置。(1) A pyroelectric member having hydrophobicity having a pyroelectric effect, and a heat applying means for applying heat to the pyroelectric member according to image information, and the heat applying means is provided in close proximity to the pyroelectric member. established,
An image forming apparatus characterized in that ink is supplied to a portion of the pyroelectric member near the heat applying means. (2) The image forming apparatus according to claim 1, wherein a thermal head is used as the heat applying means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10130790A JPH04455A (en) | 1990-04-17 | 1990-04-17 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10130790A JPH04455A (en) | 1990-04-17 | 1990-04-17 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04455A true JPH04455A (en) | 1992-01-06 |
Family
ID=14297156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10130790A Pending JPH04455A (en) | 1990-04-17 | 1990-04-17 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19525786A1 (en) * | 1994-07-27 | 1996-02-08 | Sharp Kk | Imaging forming process for electrostatic images |
| US6425505B1 (en) | 1999-09-03 | 2002-07-30 | Vesuvius Crucible Company | Pour tube with improved flow characteristics |
-
1990
- 1990-04-17 JP JP10130790A patent/JPH04455A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19525786A1 (en) * | 1994-07-27 | 1996-02-08 | Sharp Kk | Imaging forming process for electrostatic images |
| US5604569A (en) * | 1994-07-27 | 1997-02-18 | Sharp Kabushiki Kaisha | Image forming method exerting joule heat on an irradiated portion of a photoconductive layer, and an apparatus used for such a method |
| DE19525786C2 (en) * | 1994-07-27 | 2001-05-03 | Sharp Kk | Process and device for image generation |
| US6425505B1 (en) | 1999-09-03 | 2002-07-30 | Vesuvius Crucible Company | Pour tube with improved flow characteristics |
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