JP2012068546A - Hollow rotating body for fixing - Google Patents

Hollow rotating body for fixing Download PDF

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JP2012068546A
JP2012068546A JP2010214610A JP2010214610A JP2012068546A JP 2012068546 A JP2012068546 A JP 2012068546A JP 2010214610 A JP2010214610 A JP 2010214610A JP 2010214610 A JP2010214610 A JP 2010214610A JP 2012068546 A JP2012068546 A JP 2012068546A
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fixing
rotating body
temperature
hollow rotating
toner
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Tetsuya Taguchi
哲也 田口
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ST Sangyo KK
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Abstract

PROBLEM TO BE SOLVED: To provide a hollow rotating body for fixing relating to a fixing device of an image forming apparatus, which has the temperature stably controlled to be able to satisfactorily fix toner on a printing medium by eliminating variation in temperature of the hollow rotating body for fixing by improving the response precision of a temperature sensor of the hollow rotating body for fixing to stabilize the temperature of the hollow rotating body for fixing.SOLUTION: The hollow rotating body for fixing has therein a temperature sensor of temperature control means for an internal heating device and is mounted in a printer to fix toner on a recording medium by heat and pressure. The innermost surface of the hollow rotating body for fixing is provided with a thin coating surface coated with a viscous material application liquid which does not drop from the innermost surface in a range of a use temperature condition in the temperature control and less reflects heat rays than the innermost surface does.

Description

本発明は、画像形成装置の加熱定着装置に適用されるベルトやロール等の定着用内空回転体に関し、特に、定着用内空回転体の温度を制御するための温度検知センサ及び加熱機構が回転体内部に設置されることで使用される定着用内空回転体に関する。 The present invention relates to a fixing inner rotating body such as a belt or a roll applied to a heat fixing device of an image forming apparatus, and in particular, a temperature detection sensor and a heating mechanism for controlling the temperature of the fixing inner rotating body. The present invention relates to an inner rotating body for fixing used by being installed inside a rotating body.

一般に、電子写真画像形成装置に於いては、感光体上に形成されたトナー像を記録紙上に転写してから、熱定着装置によって定着する。定着装置には、加熱ロールに温度センサをロールの表面又は内部に設けて、この温度センサで加熱ロールの温度を検知し、定着温度を制御することが行われている。 In general, in an electrophotographic image forming apparatus, a toner image formed on a photoreceptor is transferred onto a recording sheet and then fixed by a thermal fixing device. In the fixing device, a temperature sensor is provided on the surface or inside of the heating roll, and the temperature of the heating roll is detected by this temperature sensor to control the fixing temperature.

ところが、定着装置の耐久が進むとこの温度センサ部や定着ローラー表面にトナーや紙粉が付着する。このため、定着ローラーの検知温度が不正確となってしまい、カールの増大や高温オフセットの発生、または、各種エラーの発生といった問題が生じていた。 However, as durability of the fixing device advances, toner and paper dust adhere to the temperature sensor unit and the surface of the fixing roller. For this reason, the detection temperature of the fixing roller becomes inaccurate, which causes problems such as an increase in curling, occurrence of high temperature offset, and occurrence of various errors.

そのため、従来から、温度センサ部やロール表面を定期的に保守点検員によって清掃する方法がとられていた。 Therefore, conventionally, a method has been adopted in which the temperature sensor unit and the roll surface are periodically cleaned by a maintenance inspector.

さらに、定着ローラーの温度のバラツキが生じるとトナーの定着が十分でなく印刷ムラが生じるといった問題が発生する。そのため、定着ローラーの温度制御や温度センサの感温性に関する提案がなされている。   Further, when the temperature of the fixing roller varies, there is a problem that toner is not sufficiently fixed and printing unevenness occurs. Therefore, proposals relating to temperature control of the fixing roller and temperature sensitivity of the temperature sensor have been made.

例えば特許文献1には、定着ローラーの内面側と外面側に誘電過熱コイルをお互いに相対する位置に配置し、過熱ローラーに対して誘電電流を集中することでローラーの発熱効率を向上させローラーの温度制御を行うことが提案されている。   For example, in Patent Document 1, dielectric heating coils are arranged on the inner surface side and outer surface side of the fixing roller at positions facing each other, and the dielectric current is concentrated on the heating roller to improve the heat generation efficiency of the roller. It has been proposed to perform temperature control.

また、特許文献2には、定着ローラーとこの定着ローラーに圧接する加圧ローラーの両ローラーに過熱手段と温度検出用のサーミスターを設けて両ローラーの温度を制御してニップ部の温度の安定化を行うことが提案されている。   In Patent Document 2, the temperature of the nip portion is stabilized by controlling the temperatures of both the fixing roller and the pressure roller that is in pressure contact with the fixing roller by providing a heating means and a temperature detection thermistor. It has been proposed to do so.

さらに、特許文献3の段落(0044)に、「図2においてOは離型剤塗布手段たるオイル塗布装置、Cはクリーニング装置、C1は加圧ローラーに付着したオイル及び汚れを除去するためのクリーニングブレードである。オイル塗布装置Oはオイルパン40内のジメチルシリコーンオイル41(例えば、信越化学製KF96
300cs)を、オイル汲み上げローラー42及びオイル塗布ローラー43を経由してオイル塗布量調節ブレード44でオイル塗布量を規制して定着ローラー29上に塗布させる。」と記載されているように、定着ローラーの表面にオイルを塗布して定着ローラーの表面やセンサ部にトナーが堆積しないようにすることが開示されている。
Further, in paragraph (0044) of Patent Document 3, “In FIG. 2, O is an oil application device as a release agent application means, C is a cleaning device, and C1 is a cleaning for removing oil and dirt adhering to the pressure roller. The oil application device O is a dimethyl silicone oil 41 (for example, KF96 manufactured by Shin-Etsu Chemical Co., Ltd.) in an oil pan 40.
300 cs) is applied to the fixing roller 29 by regulating the oil application amount by the oil application amount adjusting blade 44 via the oil pumping roller 42 and the oil application roller 43. In other words, it is disclosed that oil is applied to the surface of the fixing roller so that the toner does not accumulate on the surface of the fixing roller or the sensor unit.

特開2005−173333号公報JP 2005-173333 A 特開2004−151474号公報JP 2004-151474 A 特許第3021277号公報Japanese Patent No. 30212277

しかし、上記特許文献1及び2に開示されている定着ローラーの温度制御は装置の構成が複雑になるだけでなく、製造コストも増大する。さらに装置の構成自体も大型になるという問題があった。さらに、温度センサ部や定着ローラー表面にトナーや紙粉が付着し、カールの増大や高温オフセットの発生、または、各種エラーの発生といった問題は依然として解決されていない。   However, the temperature control of the fixing roller disclosed in Patent Documents 1 and 2 not only complicates the configuration of the apparatus but also increases the manufacturing cost. Furthermore, there has been a problem that the structure of the apparatus itself becomes large. Furthermore, toner and paper dust adhere to the surface of the temperature sensor unit and the fixing roller, and problems such as an increase in curling, occurrence of high temperature offset, and occurrence of various errors have not been solved.

定着ローラーの外表面に離型剤としてのオイルを塗布することによって、定着ローラーの表面上へのトナーの体積がある程度防止することはできるが体着ローラーの温度をバラツキがなく制御できるというものではない。したがって、定着ローラーの外表面にオイルを塗布することだけでは、定着ローラーの温度のバラツキが生じることで、トナーの定着が不十分となり、印刷ムラが生じるといった問題は依然として解決されていない。 By applying oil as a release agent to the outer surface of the fixing roller, the toner volume on the surface of the fixing roller can be prevented to some extent, but the temperature of the body roller can be controlled without variation. Absent. Therefore, simply applying oil to the outer surface of the fixing roller causes a variation in the temperature of the fixing roller, resulting in insufficient toner fixing and uneven printing.

上記の問題点について、本発明者が鋭意検討した結果、所期温度が所定温度より高めにオーバーシュウトして、設定温度より高めに温調されることが判明した。また、連続枚数を定着すると、急激に表面温度が低下していることも判明した。そこで、材料を変化させたり、各構成部品の厚みを変化させたりしたが、大きな効果を得ることが出来なかった。 As a result of intensive studies by the inventor on the above-mentioned problems, it has been found that the desired temperature is overshooted higher than a predetermined temperature and the temperature is adjusted higher than the set temperature. It was also found that the surface temperature suddenly decreased when the continuous number of sheets was fixed. Then, although the material was changed and the thickness of each component was changed, the big effect was not able to be acquired.

そこで、定着装置の加熱源の構成や温度調整機構について検討重ねた結果、本発明の完成に至ったものであり、上述したように、定着ローラーの温度制御のバラツキが起因するトナーの定着不良や印刷ムラが生じるといった問題、特に画像が定着ローラ表面に付着してしまうという問題、さらに、定着ローラーの温度センサの感温性について、本発明者が鋭意研究した結果、定着ローラーの内部にヒーターと温度センサを備える温度センサの応答精度は、定着ローラー内の熱線反射が起因して温度センサの応答精度を阻害し、またその結果定着ローラーの温度制御にバラツキが起こるという知見を見出した。 Therefore, as a result of repeated investigations on the configuration of the heat source of the fixing device and the temperature adjustment mechanism, the present invention has been completed.As described above, the toner fixing failure caused by variations in the temperature control of the fixing roller, As a result of inventor's earnest research on the problem that printing unevenness occurs, in particular, the problem that an image adheres to the surface of the fixing roller, and the temperature sensitivity of the temperature sensor of the fixing roller, a heater and It has been found that the response accuracy of a temperature sensor including a temperature sensor hinders the response accuracy of the temperature sensor due to heat ray reflection in the fixing roller, and as a result, the temperature control of the fixing roller varies.

本発明は上記の見出した知見により、画像形成装置の定着装置に係る定着用内空回転体の温度センサの応答精度を向上させ定着用内空回転体の温度のバラツキをなくし、定着用内空回転体の温度を安定させることを課題とし、画像形成装置の定着装置に係る定着用内空回転体の温度が安定して制御でき、印刷体にトナーを良好に定着できる定着用内空回転体を提供することを目的とする。 Based on the above findings, the present invention improves the response accuracy of the temperature sensor of the fixing inner rotating body related to the fixing device of the image forming apparatus, eliminates the temperature variation of the fixing inner rotating body, and eliminates the fixing inner space. An object of the present invention is to stabilize the temperature of the rotating body, stably control the temperature of the fixing inner rotating body related to the fixing device of the image forming apparatus, and fix the toner on the printing body satisfactorily. The purpose is to provide.

この目的は、特許請求の範囲における独立項に記載の特徴の組み合わせにより達成される。また従属項は本発明の更なる有利な具体例を規定する。特に本発明は、定着ローラーの内部にヒーターと温度センサを備える温度センサの応答精度は、定着ローラー内の熱線反射が起因して温度センサの応答精度を阻害し、その結果定着ローラーの温度制御にバラツキが起こるという知見を見出したことによりなされた発明である。 This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous specific examples of the present invention. In particular, according to the present invention, the response accuracy of the temperature sensor including the heater and the temperature sensor inside the fixing roller hinders the response accuracy of the temperature sensor due to heat ray reflection in the fixing roller, and as a result, the temperature control of the fixing roller is performed. It is an invention made by finding the knowledge that variation occurs.

即ち、本発明の第1の発明は、内部加熱装置に対する温度制御手段の温度検知器が内部に設けられ、トナーを記録媒体に加熱加圧することで定着を行うためにプリンタに装着されるための定着用内空回転体であって、
前記定着用内空回転体の最内面に、前記温度制御の使用温度条件の範囲内で前記最内面から滴下せず且つ前記最内面よりも熱線反射しない粘性材料塗布液で被覆された被覆薄面を備えていることを特徴とする定着用内空回転体である。
That is, according to the first aspect of the present invention, the temperature detector of the temperature control means for the internal heating device is provided inside, and is mounted on the printer for fixing by heating and pressurizing the toner to the recording medium. An inner rotating body for fixing,
A coated thin surface coated with a viscous material coating solution that does not drip from the innermost surface and does not reflect heat rays from the innermost surface within the range of the temperature control operating temperature condition on the innermost rotating body for fixing. An internal rotating body for fixing that is provided.

本発明の第2の発明は、前記粘性材料塗布液面は前記使用温度で3Pa・s以上の粘度を呈する粘性材料で、前記被覆薄面は前記内部加熱手段からの加熱を許容する第1の発明に記載の定着用内空回転体である。 According to a second aspect of the present invention, the viscous material coating liquid surface is a viscous material exhibiting a viscosity of 3 Pa · s or more at the operating temperature, and the coated thin surface allows heating from the internal heating means. 2. An inner rotating body for fixing described in 1.

本発明の第1の発明である定着用内空回転体は、内部加熱装置に対する温度制御手段の温度検知器が内部に設けられ、トナーを記録媒体に加熱加圧することで定着を行うためにプリンタに装着されるための定着用内空回転体であって、
前記定着用内空回転体の最内面に、前記温度制御の使用温度条件の範囲内で前記最内面から滴下せず且つ前記最内面よりも熱線反射しない粘性材料塗布液で被覆された被覆薄面を備える構成としている。
According to a first aspect of the present invention, there is provided an internal rotating body for fixing, in which a temperature detector for temperature control means for an internal heating device is provided, and a printer for fixing by heating and pressurizing toner to a recording medium. An inner rotating body for fixing to be mounted on
A coated thin surface coated with a viscous material coating solution that does not drip from the innermost surface and does not reflect heat rays from the innermost surface within the range of the temperature control operating temperature condition on the innermost rotating body for fixing. It is configured to provide.

即ち、定着用内空回転体の内面に熱線反射しない粘性材料を塗布して定着用内空回転体の内面を被覆しているため、定着用内空回転体の内面が定着用内空回転体内部に設けられた加熱体からの熱線を反射することを大幅に減じることができ、定着用内空回転体内の温度を正確に検知し制御することができる。したがって、印刷体にトナーを安定して良好に定着することができるという効果を奏する。またこれに付随して、画像形成装置の定着装置に係る定着用内空回転体の温度を安定して制御できるので、印刷体にトナーを良好に定着できる定着用内空回転体を提供することができるという効果を奏する。 That is, the inner surface of the fixing inner rotary member is coated with a viscous material that does not reflect heat rays to cover the inner surface of the fixing inner rotating member. Reflection of heat rays from the heating body provided inside can be greatly reduced, and the temperature in the fixing inner rotating body can be accurately detected and controlled. Therefore, there is an effect that the toner can be stably and satisfactorily fixed on the printing body. Along with this, it is possible to stably control the temperature of the fixing inner rotating body related to the fixing device of the image forming apparatus, and therefore, to provide a fixing inner rotating body capable of fixing toner on the printing body satisfactorily. There is an effect that can be.

本発明の実施態様例を示す模式図である。It is a schematic diagram which shows the example of an embodiment of this invention. 本発明の実施態様の応用例を示す模式図である。It is a schematic diagram which shows the application example of the embodiment of this invention. 本発明の実施態様例を示す模式図である。It is a schematic diagram which shows the example of an embodiment of this invention. 本発明の実施態様例を示す模式図である。It is a schematic diagram which shows the example of an embodiment of this invention.

(本発明の実施の態様例)
以下、本発明の定着用内空回転体について図1〜図3を参照して説明するが、本発明はこの事例に限られるものではない。本発明の定着用内空回転体は1、内部加熱装置2に対する温度制御手段の温度検知器3が内部に設けられ、トナーを記録媒体に加熱加圧することで定着を行うためにプリンタに装着されるための定着用内空回転体1であって、前記定着用内空回転体1の最内面に、前記温度制御の使用温度条件の範囲内で前記最内面から滴下せず且つ前記最内面よりも熱線反射しない粘性材料塗布液で被覆された被覆薄面を備える構成としている。
(Embodiment example of the present invention)
Hereinafter, the fixing inner rotating body of the present invention will be described with reference to FIGS. 1 to 3, but the present invention is not limited to this example. The fixing inner rotating body 1 of the present invention includes a temperature detector 3 serving as a temperature control means for the internal heating device 2, and is mounted on a printer for fixing by heating and pressurizing toner onto a recording medium. An inner rotating body 1 for fixing, and is not dripped from the innermost surface to the innermost surface of the inner rotating body 1 for fixing within the operating temperature condition of the temperature control. In addition, a coating thin surface coated with a viscous material coating solution that does not reflect heat rays is provided.

さらに詳しくは、本発明の実施態様における定着用内空回転体1は、図2に図示するように、SUS管体7の外表面にシリコンゴム8層を形成し、さらに前記シリコンゴム層8の外表面にPFA樹脂(テトラフロロエチレンとパーフロロアルキルビニルエーテルの共重合体樹脂)層がプライマーを介して形成された構成となっている。図3は本発明の定着用内空回転体1の外観図を示したものであるので説明は割愛する。 More specifically, as shown in FIG. 2, the fixing inner rotating body 1 according to the embodiment of the present invention includes a silicon rubber 8 layer formed on the outer surface of the SUS tube 7, and the silicon rubber layer 8. A PFA resin (copolymer resin of tetrafluoroethylene and perfluoroalkyl vinyl ether) layer is formed on the outer surface through a primer. FIG. 3 shows an external view of the fixing inner rotating body 1 according to the present invention, and therefore the description thereof is omitted.

プライマーとしては、特に限定されることなく、一般市販品のものを使用して形成することができる。例えば、アルケニル基を含むオルガノアルコキシシランやオルガノアルコキシポリシロキサン樹脂と、有機チタン酸エステル類等の金属系縮合反応用触媒を配合したプライマー組成物とし、前記シリコンゴム層表面に数ミクロン〜数十ミクロンの厚みで塗布して形成することができる。 The primer is not particularly limited, and can be formed using a commercially available product. For example, a primer composition in which an organoalkoxysilane or organoalkoxypolysiloxane resin containing an alkenyl group and a metal condensation reaction catalyst such as an organic titanate ester are blended, and the silicon rubber layer surface has several microns to several tens of microns. It can apply | coat and form by the thickness of.

そして、本発明の実施態様例では、前記定着用内空回転体1の外形は、30.75ミリ±50ミクロンの範囲に形成されたものである。このようにして形成した前記定着用内空回転体1は、図1Aに示すように、画像形成装置の定着装置として加圧ローラー4と圧接した構成とし、トナー5が塗布された印刷体6が前記定着用内空回転体1と前記加圧ローラー4との間に形成されるニップ部を通過することによって、印刷体6にトナー5が定着されて所望の印刷物が得られることになるが、本発明の特徴である前記定着用内空回転体1の内面全域に前記定着用内空回転体1の内面から滴下せず且つ内面よりも熱線反射しない粘性材料塗布液で被覆して、前記定着用内空回転体1の内面に被覆薄面を形成した構成とすることが肝要である。なお、ニップ部とは前記前記定着用内空回転体1と前記加圧ローラー4とが所定の加圧力で圧接している領域(圧接部)を示し、印刷体とは所定の面積領域をもって圧接される。 In the embodiment of the present invention, the outer shape of the fixing inner rotary member 1 is formed in a range of 30.75 mm ± 50 microns. As shown in FIG. 1A, the fixing inner rotating body 1 formed as described above is configured to be in pressure contact with a pressure roller 4 as a fixing device of an image forming apparatus, and a printed body 6 coated with toner 5 is provided. By passing through a nip formed between the fixing inner rotating body 1 and the pressure roller 4, the toner 5 is fixed to the printing body 6 and a desired printed matter is obtained. The fixing inner air rotator 1, which is a feature of the present invention, is covered with a viscous material coating solution that does not drip from the inner surface of the fixing inner air rotator 1 and does not reflect heat rays from the inner surface. It is important to have a configuration in which a thin coating surface is formed on the inner surface of the internal rotary body 1 for use. The nip portion refers to a region (pressure contact portion) where the fixing inner rotating body 1 and the pressure roller 4 are in pressure contact with each other with a predetermined pressure, and the print body is in pressure contact with a predetermined area region. Is done.

本発明の前記熱線反射しない粘性材料としては、一般市販品のものが使用される。例えば、グリース、高粘性シリコンオイル、高粘性潤滑油などが使用できるが、その粘度は、使用温度で3Pa・s以上の粘度を呈する粘性材料であることが好ましい。また、前記定着用内空回転体1の内面に塗布する塗布料は、本発明の実施の態様例においては0.5グラムから3.5グラムの範囲で行うことができる。 As the viscous material that does not reflect heat rays, a commercially available product is used. For example, grease, high-viscosity silicon oil, high-viscosity lubricating oil, and the like can be used, and the viscosity is preferably a viscous material that exhibits a viscosity of 3 Pa · s or more at the use temperature. Further, the coating material applied to the inner surface of the fixing inner rotating body 1 can be performed in the range of 0.5 to 3.5 grams in the embodiment of the present invention.

また、本発明の実施態様例では、前記定着用内空回転体1を構成する最内管をSUS管体7として構成したが、これに限定されることなく伝熱特性が良好な材料であればアルミニウム、ブレス、カッパー等の材料で管体を構成することも可能である。 Further, in the embodiment of the present invention, the innermost tube constituting the fixing inner rotary member 1 is configured as the SUS tube 7, but the material is not limited to this and may be a material having good heat transfer characteristics. For example, the tube body can be made of a material such as aluminum, breath, or copper.

さらに、本発明の実施態様の応用例について、図1Bを例示して以下に説明する。図1Bは、テンションレスフィルム加熱方式定着装置の概要模式図である。図1Bにおいて41は、樹脂製の横長ステーであり、フィルム43の内面ガイド部材と、ヒーター42の支持体とを兼ねている。 Further, an application example of the embodiment of the present invention will be described below with reference to FIG. 1B. FIG. 1B is a schematic diagram of a tensionless film heating type fixing device. In FIG. 1B, reference numeral 41 denotes a resin horizontal stay, which serves both as an inner surface guide member for the film 43 and a support for the heater 42.

43はエンドレスの耐熱性フィルムであり、ヒーター42を含むステー41に外嵌させてある。44はヒーター42との間でフィルム43を挟んで定着ニップ部を形成し、フィルムを駆動する回転体としての加圧ローラー(圧接ローラ、バックアップローラ)である。 Reference numeral 43 denotes an endless heat-resistant film, which is externally fitted to a stay 41 including a heater 42. Reference numeral 44 denotes a pressure roller (pressure roller, backup roller) as a rotating body that forms a fixing nip portion with the film 43 sandwiched between the heater 42 and drives the film.

転写材P上のトナーを定着させるために、ヒーター42を発熱させて転写材Pをニップ部Nを通過させていくと、発生する熱により加圧ローラー44が熱膨張を起こし、外径が大きくなる。この装置は、加圧ローラー44で駆動されている。このようにして定着が行われる。 In order to fix the toner on the transfer material P, when the heater 42 generates heat and the transfer material P passes through the nip portion N, the pressure roller 44 undergoes thermal expansion due to the generated heat, and the outer diameter increases. Become. This apparatus is driven by a pressure roller 44. In this way, fixing is performed.

本発明の前記定着用内空回転体1は、上記したテンションレスフィルム加熱方式定着装置に使用されているエンドレスの耐熱性フィルム(図1Bの43)の交換用ローラーとして使用すると、さらに定着性の効果が向上する。 When the inner rotating body 1 for fixing of the present invention is used as a replacement roller for an endless heat-resistant film (43 in FIG. 1B) used in the above-described tensionless film heating type fixing device, it is further fixable. The effect is improved.

次に上述の構成とした本発明の前記定着用内空回転体1を用いて構成した画像形成装置の定着装置を用いて、印刷試験を実施した。その結果を以下に説明する。 Next, a printing test was carried out using the fixing device of the image forming apparatus constituted by using the fixing inner rotating body 1 of the present invention configured as described above. The results will be described below.

(実施例1)
本発明の定着用内空回転体1の内面全域に、熱線反射しない粘性材料として市販品のグリースを塗布し、前記定着用内空回転体1の内面全域に被覆薄面を形成した定着用内空回転体1を市販の画像形成装置に組み込んで印刷試験を行った。印刷体としては普通紙を用い印刷条件は普通モードで連続10枚の印刷を行った。その結果、いずれの印刷物もトナーの定着が良好でかすれもなくまた印刷物のトナーが殆ど剥がれ落ちることはなかった。この評価結果を本発明では評価点10点とする。
Example 1
A commercially available grease as a viscous material that does not reflect heat rays is applied to the entire inner surface of the fixing inner rotating body 1 of the present invention, and a coating inner surface is formed over the entire inner surface of the fixing inner rotating body 1. The rotating body 1 was incorporated into a commercially available image forming apparatus, and a printing test was performed. Plain paper was used as the print body, and printing was performed continuously for 10 sheets in the normal mode. As a result, none of the printed materials had good toner fixing and fading, and the toner on the printed materials hardly peeled off. In this invention, this evaluation result is set to 10 evaluation points.

次に、印刷体として、ラベル紙を用いて印刷条件をラベルモードで上記と同様の印刷試験を行った。その結果、評価点は8点であったがいずれの印刷物もトナーの定着が良好でかすれもなくまた印刷物のトナーが剥がれ落ちることはなかった。 Next, a printing test similar to that described above was performed in a label mode using label paper as a printed material. As a result, although the evaluation score was 8, all the printed materials had good toner fixing, no fading, and the toner on the printed materials did not peel off.

(比較試験)
次に、本発明で得られた定着用内空回転体1の内面に何も塗布していない定着用内空回転体1を用いて、上記実施例と同様にして印刷試験を行った。印刷体としては普通紙を用い印刷条件は普通モードで連続10枚の印刷を行った。その結果、得られた印刷物のトナーが一部剥がれて落ちる結果となった。この結果を評価点3とした。
(Comparative test)
Next, a printing test was carried out in the same manner as in the above-described example using the fixing inner rotating body 1 in which nothing was applied to the inner surface of the fixing inner rotating body 1 obtained in the present invention. Plain paper was used as the print body, and printing was performed continuously for 10 sheets in the normal mode. As a result, a part of the toner of the obtained printed material was peeled off. This result was rated as 3.

また、上記比較試験と同様にして、印刷体として、ラベル紙を用いて印刷条件をラベルモードで上記と同様の印刷試験を行った。その結果、ラベル紙に印刷されたトナーが普通紙を用いた試験に比べて多くのトナーが剥がれて落ちる結果となった。この結果を評価点2とした。 Further, in the same manner as in the above comparative test, a printing test similar to the above was performed in a label mode using a label paper as a printed material. As a result, a lot of toner was peeled off from the toner printed on the label paper as compared with the test using plain paper. This result was assigned an evaluation score of 2.

本発明の試験における評価点の10点は、全く問題なく良好な印刷ができる状態を示し、評価点1は、安定した定着ができなく画像が定着用内空回転体1に付着して印刷ができない状態を示し、上記実施例及び比較例の評価点はこの評価点10から1の範囲で目視により複数の評価者によって行った。 Ten evaluation points in the test of the present invention indicate a state in which good printing can be performed without any problem. Evaluation point 1 indicates that stable fixing cannot be performed and an image adheres to the fixing inner rotating body 1 to perform printing. The evaluation point of the said Example and the comparative example was performed by the several evaluator by visual observation in the range of this evaluation point 10 to 1 in the state which cannot be performed.

(実施例2)
さらに、上述した比較例で評価点が1〜3に使用した後の定着用内空回転体1(内面塗布なし)について、本発明の構成となるようにグルースを定着用内空回転体1の内面全域に塗布したものについて、上記実施例と同様の試験を行った。その結果、比較試験では、評価点が1〜3のものが夫々5〜7に格段と向上した結果が得られた。
(Example 2)
Further, with respect to the fixing inner rotating body 1 (no inner surface coating) after the evaluation points of 1 to 3 are used in the comparative example described above, the glue is fixed to the fixing inner rotating body 1 so as to be the configuration of the present invention. The same test as in the above example was performed on the coating applied to the entire inner surface. As a result, in the comparative test, the evaluation scores of 1 to 3 were significantly improved to 5 to 7 respectively.

上述のように本発明の定着用内空回転体1は、定着用内空回転体1の内面に熱線反射しない粘性材料、例えばグリース等を塗布して定着用内空回転体1の内面を被覆しているため、定着用内空回転体1の内面が定着用内空回転体1内部に設けられた過熱体からの熱線を反射することがない。そのため定着用内空回転体1内の温度を正確に検知し制御することができる。したがって、印刷体にトナーを安定して良好に定着することが認められた。 As described above, the fixing inner rotating body 1 of the present invention covers the inner surface of the fixing inner rotating body 1 by applying a viscous material that does not reflect heat rays, such as grease, to the inner surface of the fixing inner rotating body 1. Therefore, the inner surface of the fixing inner rotary member 1 does not reflect the heat rays from the superheater provided inside the fixing inner rotary member 1. Therefore, it is possible to accurately detect and control the temperature inside the fixing inner rotary member 1. Therefore, it was confirmed that the toner was stably and satisfactorily fixed on the printed body.

上述のように本発明は、定着用内空回転体1の内部に内部加熱装置2と温度検知器3を備える温度検知器3の応答精度は、定着用内空回転体1内の熱反射が起因して温度検知器3の応答精度を阻害し、またその結果定着用内空回転体1の温度制御にバラツキが起こるという知見によってなされた発明であって、上述の構成とすることにより、画像形成装置の定着装置に係る定着用内空回転体1の温度センサの応答精度を向上させ定着用内空回転体1の温度のバラツキをなくし、定着用内空回転体1の温度を安定させるという課題を解決し、画像形成装置の定着装置に係る定着用内空回転体1の温度が安定して制御でき、印刷体にトナーを良好に定着できる定着用内空回転体1を提供するという目的を達成することができる優れた発明である。 As described above, according to the present invention, the response accuracy of the temperature detector 3 including the internal heating device 2 and the temperature detector 3 inside the fixing inner rotating body 1 is that the heat reflection in the fixing inner rotating body 1 is the same. Accordingly, the invention is made by the knowledge that the response accuracy of the temperature detector 3 is hindered, and as a result, the temperature control of the fixing inner rotating body 1 varies. The response accuracy of the temperature sensor of the fixing inner rotating body 1 related to the fixing device of the forming apparatus is improved, the temperature variation of the fixing inner rotating body 1 is eliminated, and the temperature of the fixing inner rotating body 1 is stabilized. An object of the present invention is to provide a fixing internal rotary body 1 that solves the problem, can stably control the temperature of the fixing internal rotary body 1 relating to the fixing device of the image forming apparatus, and can satisfactorily fix the toner on the printing body. It is an excellent invention that can achieve the above.

本発明の定着用内空回転体は、画像形成装置の定着装置として、トナーなどのインクを消費する印刷装置に使用されるものであれば、定着装置の種類に関係なく種々の画像形成装置に適用することができる。 The fixing inner rotating body of the present invention can be used in various image forming apparatuses regardless of the type of fixing apparatus as long as it is used as a fixing apparatus of an image forming apparatus in a printing apparatus that consumes ink such as toner. Can be applied.

1 定着用内空回転体
2 内部加熱装置
3 温度検知器
4 加圧ローラー
5 トナー
6 印刷体
7 SUS管体
8 シリコンゴム
9 PFA樹脂

DESCRIPTION OF SYMBOLS 1 Fixing inner rotating body 2 Internal heating device 3 Temperature detector 4 Pressure roller 5 Toner 6 Printing body 7 SUS pipe body 8 Silicon rubber 9 PFA resin

Claims (2)

内部加熱装置に対する温度制御手段の温度検知器が内部に設けられ、トナーを記録媒体に加熱加圧することで定着を行うためにプリンタに装着されるための定着用内空回転体であって、
前記定着用内空回転体の最内面に、前記温度制御の使用温度条件の範囲内で前記最内面から滴下せず且つ前記最内面よりも熱線反射しない粘性材料塗布液で被覆された被覆薄面を備えていることを特徴とする定着用内空回転体。
A temperature detector of a temperature control means for an internal heating device is provided inside, and is an internal rotating rotary body for fixing to be mounted on a printer for fixing by heating and pressurizing toner to a recording medium,
A coated thin surface coated with a viscous material coating solution that does not drip from the innermost surface and does not reflect heat rays from the innermost surface within the range of the temperature control operating temperature condition on the innermost rotating body for fixing. An internal rotary body for fixing, comprising:
前記粘性材料塗布液面は前記使用温度で3Pa・s以上の粘度を呈する粘性材料で、前記被覆薄面は前記内部加熱手段からの加熱を許容する請求項1に記載の定着用内空回転体。

2. The fixing inner rotating body according to claim 1, wherein the viscous material coating liquid surface is a viscous material exhibiting a viscosity of 3 Pa · s or more at the operating temperature, and the coated thin surface permits heating from the internal heating means.

JP2010214610A 2010-09-25 2010-09-25 Hollow rotating body for fixing Pending JP2012068546A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04122969A (en) * 1990-09-14 1992-04-23 Canon Inc Heating device
JP2004021081A (en) * 2002-06-19 2004-01-22 Konica Minolta Holdings Inc Fixing device
JP2006133294A (en) * 2004-11-02 2006-05-25 Canon Inc Heating device
JP2006221061A (en) * 2005-02-14 2006-08-24 Canon Inc Fixing device and image forming apparatus
JP2007293012A (en) * 2006-04-25 2007-11-08 Canon Inc Image forming apparatus
JP2009251311A (en) * 2008-04-07 2009-10-29 Sharp Corp Fixing device and image forming apparatus having the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04122969A (en) * 1990-09-14 1992-04-23 Canon Inc Heating device
JP2004021081A (en) * 2002-06-19 2004-01-22 Konica Minolta Holdings Inc Fixing device
JP2006133294A (en) * 2004-11-02 2006-05-25 Canon Inc Heating device
JP2006221061A (en) * 2005-02-14 2006-08-24 Canon Inc Fixing device and image forming apparatus
JP2007293012A (en) * 2006-04-25 2007-11-08 Canon Inc Image forming apparatus
JP2009251311A (en) * 2008-04-07 2009-10-29 Sharp Corp Fixing device and image forming apparatus having the same

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