JPS58158670A - Fixing roll of copying machine - Google Patents

Fixing roll of copying machine

Info

Publication number
JPS58158670A
JPS58158670A JP3956782A JP3956782A JPS58158670A JP S58158670 A JPS58158670 A JP S58158670A JP 3956782 A JP3956782 A JP 3956782A JP 3956782 A JP3956782 A JP 3956782A JP S58158670 A JPS58158670 A JP S58158670A
Authority
JP
Japan
Prior art keywords
paper
fixing roller
roller
antistatic
roll
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
Application number
JP3956782A
Other languages
Japanese (ja)
Inventor
Toshiyuki Ogawa
小川 年之
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.)
TOKYO SILICONE KK
Original Assignee
TOKYO SILICONE KK
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 TOKYO SILICONE KK filed Critical TOKYO SILICONE KK
Priority to JP3956782A priority Critical patent/JPS58158670A/en
Publication of JPS58158670A publication Critical patent/JPS58158670A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/20Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2053Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
    • G03G15/2057Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE:To prevent paper from being wound around a fixing roll and to use a variety of sheets of paper while obtain stable, sharp image quality, by coating the surface of the roll with antistatic fluororesin. CONSTITUTION:On the surface 2 of the roll 1, the antistatic fluororesin film 3 is formed. The roll 1 uses, for example, metal, ceramics, rubber, etc., and metal is preferable. The antistatic fluororesin gives antistatic properties to, for example, ethylene tetrafluoride resin, perfluroalkoxy resin, a ethylene tetrafluoride-propylene hexafluoride copolymer, etc. In this case, acids of lithium, chromium, molybdenum, etc., or salts thereof are added preferably.

Description

【発明の詳細な説明】 本発明は複写機用定着ローラーに関する。[Detailed description of the invention] The present invention relates to a fixing roller for a copying machine.

従来、複写機においては、紙またはフィルムに現出され
た未定着の熱r+7 t!lj性樹脂粉末(以下トナー
と称する)の画像を、定着ローラーによって加熱または
加圧、或は加熱加圧処理して、紙またはフィルムに定着
させるという定米法が行なわれている。そして、定着か
終了した紙またはフィルムは、定着ローラー表面に接触
させた金属製または合成樹脂製分離爪によって定着ロー
ラーから剥がしている。
Conventionally, in copying machines, unfixed heat r+7 t! 2. Description of the Related Art A fixing method is used in which an image of lj resin powder (hereinafter referred to as toner) is heated or pressurized with a fixing roller, or heated and pressurized to fix it on paper or film. Then, the paper or film that has been fixed is peeled off from the fixing roller by a metal or synthetic resin separating claw that is brought into contact with the surface of the fixing roller.

また、加熱定着もしくは加熱加圧定着の場合には、定着
ローラーの表面温度を管理するために、サーミスターを
定着ローラーの表面に接触させることか多い。そして、
定着ローラー表面に残留する1・−ナーを除去するため
に、クリーニングフェルトやブレードを定漸ローラーに
接触させる方法が一般に採用されている。
Further, in the case of heat fixing or heat and pressure fixing, a thermistor is often brought into contact with the surface of the fixing roller in order to control the surface temperature of the fixing roller. and,
In order to remove the 1-toner remaining on the surface of the fixing roller, a method is generally employed in which a cleaning felt or blade is brought into contact with the roller at regular intervals.

このように定着ローラー、特に加熱を伴なう定米ローラ
ー、にトナーが粘着するのを防止するために、従来から
耐熱性、非粘着性の優れたフッ素樹脂皮膜をローラーの
表面に形成した定着ローラーが広く用いられている。
In order to prevent toner from sticking to the fusing roller, especially the fixing roller that involves heating, conventional fusing rollers have a heat-resistant, non-adhesive fluororesin film formed on the surface of the roller. Rollers are widely used.

しかしなから、前述のように、定着ローラーにに、紙、
フィルム、分解爪、サーミスター、クリーニングフェル
ト、ブレード、バックアップローラーなどか接触し摩擦
するために、電気絶縁性、スベリ性の良いフッ素樹脂皮
膜面は、摩擦帯電し紙またはフィルムの移送、定着ロー
ラーからの分離が連続的に安定して行なわれず、定着し
た紙またはフィルムが定着ローラーから分離されずに定
着ローラーに巻き付く故障が発生し易いという欠点かあ
った。
However, as mentioned above, the fusing roller has paper,
The surface of the fluororesin coating, which has good electrical insulation and sliding properties, is frictionally charged and can be used to transfer paper or film, and from the fixing roller. The problem is that the separation is not carried out continuously and stably, and the fixed paper or film is not separated from the fixing roller and tends to become wrapped around the fixing roller.

定着ローラーに紙またはフィルムか巻き付くトいうこの
欠点を防止するために、多数個の分離爪を定着ローラー
に装着しているが、この問題は根本的には解決されてい
ない。
In order to prevent this problem of paper or film wrapping around the fixing roller, a large number of separation claws are attached to the fixing roller, but this problem has not been fundamentally solved.

また、定着後に定着ローラー表面の帯電量が犬となり、
しかもローラー表面の帯電量分布が不均一であるため、
複写機内に飛散浮遊していたトナーか定着ローラー表面
に電気的に付着し、定着ローラー表面がトナーで汚され
る。したかつて、後続する未定着紙を定着するときに、
定着ローラー表面に付着したトナーも紙面上に定着され
、画像に汚れが発生し、不鮮明六画質となるという欠点
もある。しかして、この欠点は連続複写を行なう場合に
特に重大な問題となる。
Also, after fixing, the amount of charge on the surface of the fixing roller increases,
Moreover, since the charge amount distribution on the roller surface is uneven,
Toner scattered and floating inside the copying machine is electrically attached to the surface of the fixing roller, and the surface of the fixing roller is smeared with toner. In the past, when fusing subsequent unfixed paper,
Another drawback is that the toner adhering to the surface of the fixing roller is also fixed on the paper surface, causing stains on the image and resulting in blurred image quality. This drawback becomes a particularly serious problem when continuous copying is performed.

本発明はこれらの欠点のない定着ローラー、すなわち安
定して魚]明な画質が得られ、定着ローラーへの紙の巻
き付きがなく、厚紙、薄紙、軟質紙、硬質紙など多種多
様の紙の使用が可能であり、しかも紙表面の帯電が少な
いために紙の表裏両面複写も容易に行なうことができ、
!、た分離爪も少数ですむので装置も小さくなるなど、
非常にゆれた利点を有する定着ローラーを提供すること
を目的とする。
The present invention provides a fixing roller that does not have these drawbacks, that is, it provides stable and clear image quality, there is no paper wrapping around the fixing roller, and it is possible to use a wide variety of papers such as thick paper, thin paper, soft paper, and hard paper. Moreover, since there is little charge on the surface of the paper, it is possible to easily copy both the front and back sides of the paper.
! , the number of separation claws is small, so the device is also smaller.
The object is to provide a fusing roller with very wide advantages.

本発明を図面によって説明すれに1本発明の定〃、ロー
ラー(4)は、ローラー(1)の表面(2)に帯電防止
性フッ素樹脂皮膜(3)を形成してなるものである。
To explain the present invention with reference to the drawings, one aspect of the present invention is that the roller (4) is formed by forming an antistatic fluororesin film (3) on the surface (2) of the roller (1).

従来の帯電j f’Ji市性を有しないフッ素樹脂皮膜
を形成した今迄の定了ローラー−Cは、帯電)i′IJ
−数ビfボルトから千ボルトにも達するか、本発明の定
着ローラーでけ数ボルトから数十ボルトと帯電111′
か顕著に少ない。しかも、従来の帯′11イ防止性を有
して・いフッ素樹脂皮膜を形成し/ζ定着ローラーでは
紙との摩擦により生じる表面電位が減少するのに長時間
を要するという欠点があったが、本発明の定着ローラー
では紙との摩擦を停止すると、表面電位も速やかに零に
なるという優れた性質を有する。
The conventional fixed roller-C, which has been formed with a fluororesin film that does not have a conventional charging property, has a charging)i'IJ
-The fixing roller of the present invention can charge from several volts to several tens of volts.
Or noticeably less. Moreover, the conventional fusing roller, which forms a fluororesin film with anti-banding properties, has the disadvantage that it takes a long time for the surface potential generated by friction with the paper to decrease. The fixing roller of the present invention has an excellent property that the surface potential quickly becomes zero when the friction with the paper stops.

本発明に用いるローラー(1)の素材としては、例う えは金属、セ廷ツクス、ゴムなとがあるが、金属が好ま
しい。ローラーの材質、大きさは適宜定める。
Examples of the material for the roller (1) used in the present invention include metal, plastic, and rubber, with metal being preferred. The material and size of the rollers shall be determined as appropriate.

帯電防止性フッ素樹脂は、例えば四フッ化エチレン樹脂
(PTFE)、パーフルオロアルコキシ(p F A)
樹脂、四フッ化エチレンー六フッ化ブを ロピレン共重合体(F E P)などに帯電防止性傷付
与・したものである。帯電防止性フッ素樹脂皮膜(3)
をローラー(1)の表面(2)に形成するには通常の塗
付、焼付方法によって行なうことができる。皮膜(3)
の種類、厚さなどは適宜定めることができる。
Examples of antistatic fluororesins include tetrafluoroethylene resin (PTFE) and perfluoroalkoxy (pFA).
It is made by adding antistatic scratches to a polyethylene copolymer (FEP) or the like using a resin such as tetrafluoroethylene-hexafluoride. Antistatic fluororesin film (3)
can be formed on the surface (2) of the roller (1) by a conventional coating or baking method. Film (3)
The type, thickness, etc. can be determined as appropriate.

一般にプラスチックに帯電防止性を付与するには、第一
に銅、アルミニウム、鉄、ニッケル、チタン、銀などの
金属導電性物質を添加する方法、第二にカーボンのよう
な導電性無機物質を添加する方法、第三にアルコール、
アミン、界面活性剤、ジフェニルグアニジンなどの有機
物質を添加する方法、第四にリチウム、クロム、モリブ
デンなどの酸またはその塩類を添加する方法などが行な
われている。
Generally, to impart antistatic properties to plastics, the first method is to add conductive metal substances such as copper, aluminum, iron, nickel, titanium, and silver, and the second method is to add conductive inorganic substances such as carbon. how to, thirdly alcohol,
A method of adding an organic substance such as an amine, a surfactant, or diphenylguanidine, and a fourth method of adding an acid such as lithium, chromium, or molybdenum or a salt thereof are used.

前掲第一の方法をフッ素樹脂に適用するとフッ素樹脂皮
膜がぼろぼろになるために、前掲第二の方法はカーボン
を大量に混入しなければならないので得られる定着ロー
ラーが黒色となり定着ローラーの汚れが目立ちにくくな
るために、そして前掲第二の方法はフッ素樹脂皮膜は約
380°C位で焼付形成するので添加物質が熱分解して
しまうために、前掲第一〜三の方法は好ましくない。
If the first method mentioned above is applied to a fluororesin, the fluororesin film becomes crumbly, but the second method mentioned above requires the inclusion of a large amount of carbon, so the resulting fixing roller becomes black and stains on the fixing roller become noticeable. The first to third methods described above are not preferred because the second method causes the fluororesin film to be baked at about 380° C. and the additive material is thermally decomposed.

本発明に用いる帯電防止性フッ素樹脂は非粘着性、耐摩
耗性、帯電防止性などの点から、前掲第四の方法で帯電
防止性を付与することか好捷しい。
From the viewpoint of non-adhesion, abrasion resistance, antistatic properties, etc., it is preferable to impart antistatic properties to the antistatic fluororesin used in the present invention by the fourth method mentioned above.

本発明の定着ローラーによれば、安定して鮮明な画質が
得られ、定着ローラーへの紙の巻き付きがなく、厚紙、
薄紙、軟質紙、硬質紙など多種多様の紙の使用が可能で
あり、しかも紙の両面複写も容易に行なうことかでき、
かつ分離爪も少数ですむので装置の容積も小さくするこ
とができ令また製造価格も安価であるなど顕著に優れた
幾多の利点かある。
According to the fixing roller of the present invention, stable and clear image quality can be obtained, there is no paper wrapping around the fixing roller, and there is no need to wrap paper around the fixing roller.
It is possible to use a wide variety of paper such as thin paper, soft paper, and hard paper, and it is also possible to easily make double-sided copies of paper.
In addition, since only a small number of separating claws are required, the volume of the device can be reduced, and the manufacturing cost is low.

以下、本発明を実施例および比較例によって説明する。The present invention will be explained below with reference to Examples and Comparative Examples.

実施例コ−〜2および比較例1〜2 1定着ローラーの作製 比較例1 Tb、 径30 mm 、長さ342爬の5056アル
ミニウム合金製ローラー表面にPTFE塗判を35μの
膜厚で塗装焼イ」シ、表面粗さ04μmRaのPTFE
皮膜形成定着ローラーを作成した。
Example 2 and Comparative Examples 1 to 2 1 Preparation of fixing roller Comparative Example 1 A PTFE coating with a thickness of 35 μm was applied to the surface of a 5056 aluminum alloy roller of Tb, diameter 30 mm, and length 342 mm. PTFE with a surface roughness of 04μmRa
A film-forming fixing roller was created.

比較例2 直径30關、長さ342脳の5056アルミニウム合金
製ローラーに平均粒径2QIIPFA樹脂を静電粉体塗
装法により吹付塗装し、表面を研摩して、042μm+
Ra表面相さ、32μ膜厚のPFA樹脂皮膜形成定着ロ
ーラーを作成した。
Comparative Example 2 A roller made of 5056 aluminum alloy with a diameter of 30 mm and a length of 342 mm was spray-coated with an average particle size of 2Q IIPFA resin by electrostatic powder coating, and the surface was polished to 042 μm+.
A PFA resin film-forming fixing roller with an Ra surface phase and a film thickness of 32 μm was prepared.

実施例1 比較例1と同じローラーに、モリブデン酸アンモよって
塗布焼付し、比較例1と同じ膜厚、表面粗さの定着ロー
ラーを作成した。
Example 1 A fixing roller having the same film thickness and surface roughness as Comparative Example 1 was prepared by coating and baking ammomolybdate onto the same roller as Comparative Example 1.

実施例2 比較例2と同じローラーに、1重量%塩化リチウムを含
む平均粒径20μのPFA樹脂を、比較(7) 例2に記載の方法によって、塗装し比較例2と同一膜厚
、同一表面粗さの定着ローラーを作成した。
Example 2 A PFA resin containing 1% by weight lithium chloride and having an average particle size of 20 μm was coated on the same roller as in Comparative Example 2 by the method described in Comparative (7) Example 2. A fixing roller with a rough surface was created.

■帯電用測定 (1)測定方法 株式会社川口電機製作所製表面電位計S −2]、 0
型を用い、第3図の矢印に示す如く定着ローラーの左部
、中央部、右部の三点について表面電位を測定した。
■Measurement for charging (1) Measurement method Surface electrometer S-2 manufactured by Kawaguchi Electric Manufacturing Co., Ltd.], 0
Using a mold, the surface potential was measured at three points on the left, center, and right parts of the fixing roller as shown by the arrows in FIG.

測定条件は、摩擦速度13on/秒、摩擦構造は第4図
に示す通りであり、定着ローラー表面温度はロンクリー
ニング材(6)とを接触させた。
The measurement conditions were as follows: a friction speed of 13 on/sec, a friction structure as shown in FIG. 4, and a fixing roller surface temperature that was brought into contact with a Ron cleaning material (6).

(2)測定結果 下掲表の数値から、本発明の定着ローラーは従来のもの
に比し表面電位が顕著に少ないことかわかる。
(2) Measurement Results From the numerical values in the table below, it can be seen that the surface potential of the fixing roller of the present invention is significantly lower than that of the conventional one.

表面電位測定値    単位ボルト ■紙の巻き付き試験および画質汚れ試験実施例1 実施例1の定着ローラーを用いA−4サイズ普通紙を用
いて40.0 O0枚コピーを行なったが、紙の巻き付
きは皆無であり、また画質汚れは著しく少なかった。
Surface potential measurement value Unit Volt ■Paper wrapping test and image quality stain test Example 1 Using the fixing roller of Example 1, 40.000 copies were made using A-4 size plain paper, but the paper wrapping was There were no stains on the image quality, and there was significantly less staining on the image quality.

なお、分離爪数を従来の6個から3個に減少させた実験
も行なったが、紙の分離性は変化なく良好であった。
An experiment was also conducted in which the number of separation claws was reduced from the conventional six to three, but the paper separation properties remained good without any change.

実施例2 実施例2の定着ローラーを用い、A−4サイズ普通紙を
用いて40,000枚コピーを行なったが、紙の巻き付
きは皆無で画質汚れは著しく少なかった。
Example 2 Using the fixing roller of Example 2, 40,000 copies were made using A-4 size plain paper, but there was no paper wrapping and the image quality was significantly less stained.

なお、分離爪数を従来の6個より3個に減少させた実験
も行なったか、紙の分離性は6個の場合と変化なく良好
であった。
An experiment was also conducted in which the number of separation claws was reduced from the conventional six to three, and the paper separation performance was as good as in the case of six.

比較例1 比較例1の定着ローラーを用いて、実施例1と同様の試
験を行なった。約170枚で1回の割合で紙の巻き付き
が発生し、画質汚れは800枚頃上り目立つようになっ
た。
Comparative Example 1 Using the fixing roller of Comparative Example 1, the same test as in Example 1 was conducted. Paper wrapping occurred once every 170 sheets, and the image quality became more noticeable around 800 sheets.

なお、分離爪数を従来の6個から3個に減少させた場合
、5o枚に1回位の割合で紙の巻きf」きが多発した。
In addition, when the number of separation claws was reduced from the conventional six to three, paper wrapping occurred frequently at a rate of about once every 50 sheets.

比較例2 比較例2・の定着ローラーを用いて、実施例2と同様の
試験を行なった。約220枚で1回の割合で紙の巻き付
きが発生し、画質汚れは5000枚頃よ9著しくなった
Comparative Example 2 A test similar to Example 2 was conducted using the fixing roller of Comparative Example 2. Paper curling occurred once every 220 sheets, and the image quality became more smudged than around 5,000 sheets.

なお、分離爪数を従来の6個から3個に減少させた実験
も行なったが、3個の場合には50枚で1回程度の割合
で紙の巻き付きが発生した。
An experiment was also conducted in which the number of separation claws was reduced from the conventional six to three, but when there were three, paper wrapping occurred at a rate of about once for every 50 sheets.

前掲実施例1〜2および比較例1〜2より、本発明の定
着ローラーは、従来のものに比し、紙の巻き付きが顕著
に防止され、かつ画質汚れも顕著に少いことがわかる。
From Examples 1 and 2 and Comparative Examples 1 and 2 above, it can be seen that the fixing roller of the present invention significantly prevents paper wrapping and causes significantly less image staining than the conventional fixing roller.

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

図面は本発明の実施例の定着ローラーを示すものであっ
て、第1図は本発明の定着ローラーの側面図、第2図は
その側面中央縦断面図、第3図は表面電位測定部を矢印
で示した正面図、そして第4図は帯電量測定時の摩擦構
造を示す側面図である。 l:ローラー、2:ローラー表面、3:帯電防止性フッ
素樹脂皮膜、4:定着ローラー、5:”バックアップロ
ーラー、6:ナイロンクリーニング材。 特許出願人 東京シリコーン株式会社 代理人 弁理士 沢 茂夫
The drawings show a fixing roller according to an embodiment of the present invention, in which FIG. 1 is a side view of the fixing roller of the present invention, FIG. 2 is a longitudinal cross-sectional view of the center of the side surface, and FIG. 3 is a side view of the fixing roller according to an embodiment of the present invention. A front view indicated by an arrow, and FIG. 4 a side view showing the friction structure when measuring the amount of charge. 1: Roller, 2: Roller surface, 3: Antistatic fluororesin film, 4: Fixing roller, 5: Backup roller, 6: Nylon cleaning material. Patent applicant Tokyo Silicone Co., Ltd. Agent Patent attorney Shigeo Sawa

Claims (1)

【特許請求の範囲】[Claims] ローラー(1)の表面(2)に帯電防止性フッ素樹脂皮
(3)を形成してなる複穿機用定着ローラー。
A fixing roller for a multi-punching machine, comprising an antistatic fluororesin coating (3) formed on the surface (2) of a roller (1).
JP3956782A 1982-03-15 1982-03-15 Fixing roll of copying machine Pending JPS58158670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3956782A JPS58158670A (en) 1982-03-15 1982-03-15 Fixing roll of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3956782A JPS58158670A (en) 1982-03-15 1982-03-15 Fixing roll of copying machine

Publications (1)

Publication Number Publication Date
JPS58158670A true JPS58158670A (en) 1983-09-20

Family

ID=12556652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3956782A Pending JPS58158670A (en) 1982-03-15 1982-03-15 Fixing roll of copying machine

Country Status (1)

Country Link
JP (1) JPS58158670A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62288874A (en) * 1986-06-09 1987-12-15 Tokyo Silicone Kk Electrification preventing fixing roller
JPS63192070A (en) * 1987-02-04 1988-08-09 Canon Inc Fixing device
JPH01281479A (en) * 1988-05-09 1989-11-13 Canon Inc Elastic rotor and fixing device
JPH01300281A (en) * 1988-05-30 1989-12-04 Canon Inc Fixing device
JPH06250553A (en) * 1993-02-22 1994-09-09 Kin Yosha Kk Roll

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62288874A (en) * 1986-06-09 1987-12-15 Tokyo Silicone Kk Electrification preventing fixing roller
JPS63192070A (en) * 1987-02-04 1988-08-09 Canon Inc Fixing device
JPH01281479A (en) * 1988-05-09 1989-11-13 Canon Inc Elastic rotor and fixing device
JPH01300281A (en) * 1988-05-30 1989-12-04 Canon Inc Fixing device
JPH06250553A (en) * 1993-02-22 1994-09-09 Kin Yosha Kk Roll

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