JPH04294377A - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JPH04294377A JPH04294377A JP8330391A JP8330391A JPH04294377A JP H04294377 A JPH04294377 A JP H04294377A JP 8330391 A JP8330391 A JP 8330391A JP 8330391 A JP8330391 A JP 8330391A JP H04294377 A JPH04294377 A JP H04294377A
- Authority
- JP
- Japan
- Prior art keywords
- fixing
- roller
- heat
- amount
- transfer material
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000013589 supplement Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 11
- 239000006082 mold release agent Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 229920000784 Nomex Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000004763 nomex Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明はたとえば複写機やレーザ
ビームプリンタ等の各種画像記録装置の定着装置、特に
定着ローラーにて未定着像を加熱定着させるものに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fixing devices for various image recording apparatuses such as copying machines and laser beam printers, and more particularly to fixing devices for fixing unfixed images by heat using a fixing roller.
【0002】0002
【従来の技術】従来のこの種の定着装置としてはたとえ
ば図4に示すように乾式の粉体現像剤を使用する場合は
、定着ローラー100と加圧ローラー101との間に未
定着トナー像102を載せた記録材103を通過させる
熱ローラー定着装置が広く用いられている。すなわち、
記録材103が搬送されてくると、定着ローラー100
と加圧ローラー101は一定速度で回転をし、記録材1
03は定着,加圧ローラー100,101の間を通過す
る際に表裏両面から加熱,加圧され、表面に担持した未
定着トナーが溶融して定着される。2. Description of the Related Art A conventional fixing device of this type uses a dry powder developer as shown in FIG. A heat roller fixing device that allows the recording material 103 loaded with the recording material 103 to pass therethrough is widely used. That is,
When the recording material 103 is conveyed, the fixing roller 100
The pressure roller 101 rotates at a constant speed, and the recording material 1
03 is heated and pressurized from both the front and back sides when passing between the fixing and pressure rollers 100 and 101, and the unfixed toner carried on the surface is melted and fixed.
【0003】0003
【発明が解決しようとする課題】しかしながら従来の上
記にような熱ローラータイプの定着装置においては、定
着ローラー100と加圧ローラー101との間を記録材
103が通過し、定着が行なわれる際に離型剤の塗布及
び記録材103によって定着,加圧ローラー101,1
02の熱は奪われ、定着直前と定着,加圧ローラー10
0,101が数回回転した後の定着直後のローラー表面
の温度に大きな差が生じていた。その為に記録材103
の先端と後端では定着温度が異なり、画像の光沢度,定
着性等に違いが生じていた。また、ローラー表面の温度
が低下してしまう記録材103の後端部においても、充
分な定着を行なう為に、ローラー表面の温度を高く設定
しなければならず、ローラーの寿命や機内温度に悪影響
を与えていた。However, in the conventional heat roller type fixing device as described above, when the recording material 103 passes between the fixing roller 100 and the pressure roller 101 and fixing is performed, Applying a release agent and fixing by the recording material 103, pressure rollers 101,1
The heat of 02 is removed, and immediately before fixing, fixing, pressure roller 10
There was a large difference in the temperature of the roller surface immediately after fixing after 0 and 101 had rotated several times. For that purpose, recording material 103
The fixing temperature was different between the leading edge and the trailing edge, resulting in differences in image gloss, fixing performance, etc. In addition, even at the rear end of the recording material 103 where the temperature of the roller surface decreases, the temperature of the roller surface must be set high in order to perform sufficient fixing, which adversely affects the life of the roller and the temperature inside the machine. was giving.
【0004】本発明の目的は、定着時にローラー等の回
転体表面の温度が低下することによる記録材の先端から
後端までの間での光沢度,定着性等の差をなくし、画像
品位を向上させ、かつ設定温度の低下を可能とする定着
装置を提供することである。An object of the present invention is to eliminate differences in gloss, fixability, etc. from the leading edge to the trailing edge of a recording material due to a drop in temperature of the surface of a rotating body such as a roller during fixing, and to improve image quality. It is an object of the present invention to provide a fixing device which can improve the temperature and lower the set temperature.
【0005】[0005]
【課題を解決するための手段】本発明は上記した従来技
術の課題を解決するためになされたもので、その目的と
するところは、少なくとも定着用回転体を備え、該定着
用回転体にて転写材上に定着画像を形成させる定着装置
において、定着用回転体から記録材に供給される熱量を
、記録材の先端から後端に至るまでほぼ等しく保つため
の供給熱量制御手段を設けたことを特徴とする。[Means for Solving the Problems] The present invention has been made in order to solve the above-mentioned problems of the prior art, and its object is to provide at least a fixing rotary body, in which the fixing rotary body In a fixing device that forms a fixed image on a transfer material, a supply heat amount control means is provided to keep the amount of heat supplied from a fixing rotating body to the recording material substantially equal from the leading edge to the trailing edge of the recording material. It is characterized by
【0006】供給熱量制御手段は、定着時に定着用回転
体に外部回転体を加熱接触させて供給熱量を補なうよう
にすることが好ましい。Preferably, the supplied heat amount control means supplements the supplied heat amount by bringing an external rotary member into heating contact with the fixing rotary member during fixing.
【0007】また、供給熱量制御手段は、定着時に定着
用回転体と加圧用回転体の回転速度を徐々に減速させる
ようにしてもよい。Further, the supply heat amount control means may gradually reduce the rotational speed of the fixing rotor and the pressurizing rotor during fixing.
【0008】さらに、供給熱量制御手段としては、定着
時に定着用回転体と加熱用回転体の加圧量が徐々に増大
するような構成としてもよい。Furthermore, the supply heat amount control means may be configured such that the amount of pressure applied to the fixing rotor and the heating rotor gradually increases during fixing.
【0009】[0009]
【作用】上記構成の定着装置にあっては、供給熱量制御
手段によって記録材に供給される熱量が記録材の先端か
ら後端までほぼ等しく保たれ、記録材の先端から後端ま
での間における光沢度及び定着性の差を解消し、記録材
の全面にわたって均一な画像を得ることができる。[Operation] In the fixing device configured as described above, the amount of heat supplied to the recording material by the supply heat amount control means is maintained approximately equal from the leading edge to the trailing edge of the recording material, and the amount of heat supplied to the recording material from the leading edge to the trailing edge of the recording material is It is possible to eliminate differences in gloss and fixability and obtain a uniform image over the entire surface of the recording material.
【0010】0010
【実施例】以下に本発明を図示の実施例に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the illustrated embodiments.
【0011】本発明の第1実施例に係る定着装置を示す
図1において、この定着装置は、回転可能な定着用回転
体としての定着ローラー1と、この定着ローラー1に圧
接しながら回転する加圧用回転体としての加圧ローラー
2と、定着ローラー1の表面に、離型剤を供給する脱着
可能な塗布装置3と、定着ローラー1及び加圧ローラー
2の表面上に付着したトナーや紙粉をクリーニングする
クリーニングウェブ4の構成となっている。定着ローラ
ー1は金属製パイプの表面にシリコーンゴム、フッ素ゴ
ムを被覆した構造になっている。加圧ローラー2は金属
ローラーの表面にシリコーンゴムを設け、その表面にフ
ッ素樹脂コートをほどこしたものである。定着ローラー
1の内部、もしくは定着ローラー1及び加圧ローラー2
の内部にはハロゲンランプ等のヒーターが配置されてい
る。また加圧ローラー2にはサーミスタ5が接触してお
り、温度調節回路を介してヒーターへの電圧を制御する
ことによりローラーを温調している。これらのローラー
1,2は不図示の装置本体に矢印方向回転自在に軸支さ
れている。塗布装置3は離型剤としてシリコーンオイル
を収納した離型剤槽3aと離型剤槽3aから離型剤を汲
み上げる汲み上げローラー3bと離型剤を定着ローラー
1に塗布する塗布ローラー3cと離型剤の塗布量を制御
する為のブレード3dから構成されている。塗布ローラ
ー3cは回転可能でスポンジゴムの表面にシリコーンゴ
ムを被覆してあり、定着ローラー1に脱着可能で、離型
剤を塗布している。離型剤の塗布量はブレード3dによ
り調整され一定の塗布量で転写材の先端から後端まで塗
布している。クリーニングウェブ4は定着ローラー1側
に、ニッケルウェブ4a、加圧ローラー2側にノーメッ
クスフェルト4bが圧接してローラーのクリーニングを
行なっている。In FIG. 1 showing a fixing device according to a first embodiment of the present invention, this fixing device includes a fixing roller 1 as a rotatable fixing rotating body, and a pressure roller that rotates while being in pressure contact with the fixing roller 1. A pressure roller 2 as a pressure rotating body, a removable coating device 3 that supplies a release agent to the surface of the fixing roller 1, and toner and paper powder adhering to the surfaces of the fixing roller 1 and the pressure roller 2. A cleaning web 4 is configured to clean the . The fixing roller 1 has a structure in which the surface of a metal pipe is coated with silicone rubber or fluororubber. The pressure roller 2 is a metal roller provided with silicone rubber on its surface and coated with a fluororesin. Inside of fixing roller 1 or fixing roller 1 and pressure roller 2
A heater such as a halogen lamp is placed inside. Further, a thermistor 5 is in contact with the pressure roller 2, and the temperature of the roller is controlled by controlling the voltage applied to the heater via a temperature control circuit. These rollers 1 and 2 are rotatably supported by an apparatus main body (not shown) so as to be rotatable in the direction of the arrow. The coating device 3 includes a mold release agent tank 3a containing silicone oil as a mold release agent, a pumping roller 3b that pumps up the mold release agent from the mold release agent tank 3a, an application roller 3c that applies the mold release agent to the fixing roller 1, and a mold release agent. It consists of a blade 3d for controlling the amount of agent applied. The application roller 3c is rotatable, has a sponge rubber surface coated with silicone rubber, is removable from the fixing roller 1, and is coated with a release agent. The amount of the release agent applied is adjusted by the blade 3d, and the release agent is applied at a constant amount from the leading edge to the trailing edge of the transfer material. The cleaning web 4 has a nickel web 4a on the fixing roller 1 side, and a Nomex felt 4b on the pressure roller 2 side to clean the rollers.
【0012】図1において、8は定着ローラー1に脱着
可能な供給熱量制御手段としての外部ローラーで、内部
にはハロゲンランプ等のヒーター10が配置されている
。また外部ローラー8にはサーミスタ9が接触しており
、温度調節回路を介してヒーター10の電圧を制御する
ことにより定着,加圧ローラー1,2よりも高い温度で
温調している。In FIG. 1, reference numeral 8 denotes an external roller as supply heat amount control means that can be attached to and detached from the fixing roller 1, and a heater 10 such as a halogen lamp is disposed inside. A thermistor 9 is in contact with the external roller 8, and the temperature is controlled at a higher temperature than the fixing and pressure rollers 1 and 2 by controlling the voltage of the heater 10 via a temperature control circuit.
【0013】この状態において、記録材としての転写材
11が入口ガイド6を介して定着器へ搬送されてくると
、塗布ローラー3cが定着ローラー1に接触しオイル塗
布を行なう。この時、定着ローラー1は塗布ローラー3
cに熱を奪われ、定着ローラー1の表面温度は低下して
しまう。次に定着を行なう際、転写材11にも定着ロー
ラー1の熱は奪われ定着ローラー1の表面温度は更に低
下してしまう。In this state, when the transfer material 11 as a recording material is conveyed to the fixing device via the entrance guide 6, the coating roller 3c contacts the fixing roller 1 and applies oil thereto. At this time, the fixing roller 1 is
The surface temperature of the fixing roller 1 decreases due to heat being taken away by the fixing roller 1. When the next fixing is performed, the heat of the fixing roller 1 is also taken away from the transfer material 11, and the surface temperature of the fixing roller 1 further decreases.
【0014】しかし定着,加圧ローラー1,2の回転速
度、ニップ巾等は一定である為、定着位置で転写材11
の先端から後端に与えられる熱量は徐々に少なくなって
しまい光沢度定着性等が異なってしまう。特にカラー画
像においては、転写材の先端から後端までの温度差によ
る光沢度,定着性の差が画像品位に大きく影響を及ぼし
てしまう。そこで定着時定着,加圧ローラー1,2の表
面温度が低下した時点で外部ローラー8を定着ローラー
1に接触させ、外部ローラー8の熱を定着ローラー1に
与えることにより、定着ローラー1の表面温度の低下を
補うことができ、転写材の先端から後端までのローラー
表面温度に差がなくなり、均一な光沢度及び定着性を得
ることができた。However, since the rotational speed, nip width, etc. of the fixing and pressure rollers 1 and 2 are constant, the transfer material 11 is fixed at the fixing position.
The amount of heat applied from the leading edge to the trailing edge gradually decreases, resulting in differences in gloss, fixability, etc. Particularly in the case of color images, differences in glossiness and fixability due to temperature differences from the leading edge to the trailing edge of the transfer material greatly affect the image quality. Therefore, when the surface temperature of the pressure rollers 1 and 2 decreases during fixing, the external roller 8 is brought into contact with the fixing roller 1, and the heat of the external roller 8 is applied to the fixing roller 1, thereby increasing the surface temperature of the fixing roller 1. It was possible to compensate for the decrease in temperature, eliminate the difference in roller surface temperature from the leading edge to the trailing edge of the transfer material, and achieve uniform gloss and fixing performance.
【0015】図2は本発明の第2実施例を示す制御図で
ある。構成は図1の外部ローラー8の代りに、供給熱量
制御手段として速度可変装置20を設けたものである。FIG. 2 is a control diagram showing a second embodiment of the present invention. The configuration is such that a variable speed device 20 is provided as a supply heat amount control means in place of the external roller 8 in FIG.
【0016】転写材11が定着器へ搬送されてくると、
前記と同様な過程により定着ローラー1表面の温度は低
下してしまい、転写材11の先端から後端までの間にお
いて、光沢度及び定着性に差ができてしまう。When the transfer material 11 is conveyed to the fixing device,
The temperature of the surface of the fixing roller 1 decreases due to the same process as described above, resulting in a difference in gloss and fixing performance between the leading edge and the trailing edge of the transfer material 11.
【0017】定着ローラー1の表面温度が低い場合、定
着,加圧ローラー1,2の回転速度を遅くして熱量を与
える時間を増やすことにより、表面温度が高い場合と同
等な熱量を転写材11に供給することが出来る。そこで
、速度可変装置20を設けることにより、図2で示す様
に定着時に定着ローラー1の表面温度が低下してしまう
のに合わせて、転写材11の先端と同等の光沢度及び定
着性を示すように徐々に定着,加圧ローラー1,2の周
速を遅らせることによりローラー表面の温度が低下して
も、転写材の先端から後端まで均一な画像を得ることが
出来た。またこのことにより同一速度で定着を行なう場
合に転写材の後端での定着性を保障するように設定して
いたローラー表面の温度を低くすることが可能となった
。When the surface temperature of the fixing roller 1 is low, by slowing down the rotational speed of the fixing and pressure rollers 1 and 2 and increasing the time for applying heat, the same amount of heat as when the surface temperature is high can be applied to the transfer material 11. can be supplied to Therefore, by providing the speed variable device 20, the surface temperature of the fixing roller 1 decreases during fixing, as shown in FIG. By gradually slowing down the circumferential speed of the fixing and pressure rollers 1 and 2, a uniform image could be obtained from the leading edge to the trailing edge of the transfer material even if the temperature of the roller surface decreased. This also makes it possible to lower the temperature of the roller surface, which was set to ensure fixing performance at the rear end of the transfer material when fixing is performed at the same speed.
【0018】尚、速度可変装置の具体的な構成は図示し
ないが、たとえばステッピングモータ等によりモータ自
体の回転速度を制御するようにしてもよいし、無段階ク
ラッチを用いて速度を調整するようにしてもよいし、公
知の種々の構成をとることができる。[0018]Although the specific configuration of the speed variable device is not shown, for example, the rotational speed of the motor itself may be controlled by a stepping motor or the like, or the speed may be adjusted using a stepless clutch. Alternatively, various known configurations can be adopted.
【0019】図3は本発明の第3実施例を示す制御図で
ある。構成は図1の外部ローラー1の代りに加圧装置4
0を設けたものである。図1の構成において転写材11
が定着装置へ搬送されてくると、前記と同様な過程によ
り定着ローラー1表面の温度は低下してしまい、転写材
11の先端から後端までの間において光沢度及び定着性
に差がでてしまう。ローラー1の表面温度が低い場合、
速度を遅くして熱量を供給する時間を増やすことの他に
、熱量を供給する面積を増やすことにより、表面温度が
高い場合と同等な熱量を転写材11に供給することがで
きる。FIG. 3 is a control diagram showing a third embodiment of the present invention. The configuration is that a pressure device 4 is used instead of the external roller 1 in FIG.
0 is set. In the configuration of FIG. 1, the transfer material 11
When the transfer material 11 is conveyed to the fixing device, the temperature of the surface of the fixing roller 1 decreases due to the same process as described above, resulting in a difference in gloss and fixability between the leading edge and the trailing edge of the transfer material 11. Put it away. When the surface temperature of roller 1 is low,
In addition to increasing the time for supplying heat by slowing down the speed, by increasing the area to which heat is supplied, it is possible to supply the same amount of heat to the transfer material 11 as when the surface temperature is high.
【0020】そこで加圧装置40を設けることにより図
3で示すように定着時にローラー1の表面温度が低下し
てしまうのに合わせて、転写材11の先端と同等の光沢
度及び定着性を示すように徐々に定着,加圧ローラー1
,2の加圧量を増やし、ニップ巾を大きくすることによ
り、ローラー表面の温度が低下しても、転写材11の先
端から後端まで均一な画像を得ることができた。Therefore, by providing a pressure device 40, the surface temperature of the roller 1 decreases during fixing, as shown in FIG. Gradually fix the pressure roller 1.
, 2 and the nip width, it was possible to obtain a uniform image from the leading edge to the trailing edge of the transfer material 11 even if the temperature of the roller surface decreased.
【0021】また、このことにより同一加圧量で定着を
行なう場合に、転写材11の後端での定着性を保障する
ように設定していたローラー表面の温度を低くすること
が可能となった。[0021] Furthermore, this makes it possible to lower the temperature of the roller surface, which was set to ensure the fixing performance at the rear end of the transfer material 11, when fixing is performed with the same amount of pressure. Ta.
【0022】尚、加圧装置40の具体的構成についても
図示しないが、定着ローラー1と加圧ローラー2との加
圧量を調整する公知の種々の構成を採用することができ
る。Although the specific configuration of the pressure device 40 is not shown, various known configurations for adjusting the amount of pressure applied between the fixing roller 1 and the pressure roller 2 can be adopted.
【0023】[0023]
【発明の効果】以上本発明によれば、定着時に定着ロー
ラーの表面温度が低下した場合において、供給熱量制御
手段により記録材の先端から後端まで定着位置で定着用
回転体が与える熱量を等しくすることにより、記録材の
先端から後端までの間において光沢度、及び定着性を均
一にすることができる。According to the present invention, when the surface temperature of the fixing roller decreases during fixing, the supply heat amount control means can equalize the amount of heat given by the fixing rotor at the fixing position from the leading edge to the trailing edge of the recording material. By doing so, the glossiness and fixing performance can be made uniform from the leading edge to the trailing edge of the recording material.
【0024】特にカラー画像においては、記録材の先端
から後端までの間における光沢度の差が画像に大きく影
響していたので画像品位の向上に大きな効果があった。
また、従来まで定着用回転体の表面温度が低下してしま
う記録材後端においても、定着性を保障するために、定
着用回転体の表面温度を高く設定しなければならなかっ
たが、記録材の先端から後端までの間で、定着位置にて
与える熱量を等しくすることにより、この設定温度を低
くすることができ、定着用回転体の長寿命化,機内温度
の低下に効果があった。Particularly in color images, the difference in gloss from the leading edge to the trailing edge of the recording material had a great effect on the image, and this had a great effect on improving the image quality. Additionally, in the past, the surface temperature of the fixing rotor had to be set high to ensure fixing performance even at the trailing edge of the recording material, where the surface temperature of the fixing rotor decreased. By equalizing the amount of heat applied at the fusing position from the leading edge to the trailing edge of the material, this set temperature can be lowered, which is effective in extending the life of the fusing rotor and lowering the temperature inside the machine. Ta.
【図1】図1は本発明の第1実施例に係る定着装置の概
略断面図である。FIG. 1 is a schematic cross-sectional view of a fixing device according to a first embodiment of the present invention.
【図2】図2は本発明の第2実施例に係る定着装置の制
御図である。FIG. 2 is a control diagram of a fixing device according to a second embodiment of the present invention.
【図3】図3は本発明の第3実施例に係る定着装置の制
御図である。FIG. 3 is a control diagram of a fixing device according to a third embodiment of the present invention.
【図4】従来の定着装置の概略断面図である。FIG. 4 is a schematic cross-sectional view of a conventional fixing device.
1 定着ローラー 2 加圧ローラー 3 オイル塗布装置 3a 離型剤槽 3b 汲み上げローラー 3c 塗布ローラー 3d ブレード 4a ニッケルウェブ 4b ノーメックスフェルト 4 ウェブクリーニング装置 5 サーミスタ 6 入口ガイド 7 排紙ガイド 8 外部ローラー 9 サーミスタ 1 Fixing roller 2 Pressure roller 3 Oil applicator 3a Mold release agent tank 3b Pumping roller 3c Application roller 3d blade 4a Nickel web 4b Nomex felt 4 Web cleaning device 5 Thermistor 6 Entrance guide 7 Paper ejection guide 8 External roller 9 Thermistor
Claims (4)
着用回転体にて記録材上の未定着像を加熱定着させる定
着装置において、前記定着用回転体から前記記録材に供
給される熱量を、前記記録材の先端から後端に至るまで
ほぼ等しく保つための供給熱量制御手段を設けたことを
特徴とする定着装置。1. A fixing device that includes at least a fixing rotary body and heats and fixes an unfixed image on a recording material with the fixing rotary body, wherein the amount of heat supplied from the fixing rotary body to the recording material is controlled. 2. A fixing device comprising: a means for controlling the amount of heat supplied to keep the amount of heat substantially equal from the leading edge to the trailing edge of the recording material.
回転体に外部回転体を加熱接触させて供給熱量を補なう
請求項1に記載の定着装置。2. The fixing device according to claim 1, wherein the supplied heat amount control means supplements the supplied heat amount by bringing an external rotating body into heating contact with the fixing rotary body during fixing.
回転体と加圧用回転体の回転速度を徐々に減速させる請
求項1に記載の定着装置。3. The fixing device according to claim 1, wherein the supply heat amount control means gradually reduces the rotational speed of the fixing rotor and the pressure rotor during fixing.
回転体と加圧用回転体の加圧量を徐々に増圧させる請求
項1に記載の定着装置。4. The fixing device according to claim 1, wherein the supply heat amount control means gradually increases the amount of pressure applied by the fixing rotor and the pressurizing rotor during fixing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8330391A JPH04294377A (en) | 1991-03-22 | 1991-03-22 | Fixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8330391A JPH04294377A (en) | 1991-03-22 | 1991-03-22 | Fixing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04294377A true JPH04294377A (en) | 1992-10-19 |
Family
ID=13798645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8330391A Withdrawn JPH04294377A (en) | 1991-03-22 | 1991-03-22 | Fixing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04294377A (en) |
-
1991
- 1991-03-22 JP JP8330391A patent/JPH04294377A/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |