JPH03174570A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH03174570A JPH03174570A JP1314840A JP31484089A JPH03174570A JP H03174570 A JPH03174570 A JP H03174570A JP 1314840 A JP1314840 A JP 1314840A JP 31484089 A JP31484089 A JP 31484089A JP H03174570 A JPH03174570 A JP H03174570A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- transfer material
- evaporator
- fixing device
- image forming
- 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
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000007639 printing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 33
- 230000005855 radiation Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 230000002265 prevention Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005560 fluorosilicone rubber Polymers 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、電子写真法・静電印刷法・磁気印刷法等によ
り転写紙・記録紙等の像支持材上に形成された未定着現
像剤像（以下トナー像という）を該像支持材上に定着さ
せる定着装置を備えた画像形成装置に関する。Detailed Description of the Invention "Industrial Application Field" The present invention relates to an unfixed developed image formed on an image support material such as a transfer paper or a recording paper by an electrophotographic method, an electrostatic printing method, a magnetic printing method, etc. The present invention relates to an image forming apparatus equipped with a fixing device that fixes a toner image (hereinafter referred to as a toner image) onto the image support material.
「従来の技術」
第４図は従来例の電子複写機の縦断面図である。光源１
１により照射された原稿台１２上の原稿像の反射光は移
動光学系１３により方向を変えて結像レンズ１４を透過
し、固設した反射ミラー群１５を介して感光体を外周に
層持し移動光学系１３と同期して回転する感光ドラム１
６上に結像するものである。感光ドラム１６の周囲には
一次帯電器、現像装置、転写電極、分離装置、クリーニ
ング装置等の電子写真工程を行う各装置が配列されてお
り、給紙部２５から送られた紙のような転写材に転写し
て、該転写材を加熱ローラ定着装置２６に送り定着して
機外に送り出すようになっている。"Prior Art" FIG. 4 is a longitudinal sectional view of a conventional electronic copying machine. light source 1
The reflected light from the original image on the original platen 12 illuminated by the moving optical system 13 is transmitted through the imaging lens 14, and is transferred to the photoreceptor in layers around the outer periphery via a fixed reflection mirror group 15. The photosensitive drum 1 rotates in synchronization with the moving optical system 13.
6. Various devices for performing an electrophotographic process such as a primary charger, a developing device, a transfer electrode, a separating device, and a cleaning device are arranged around the photosensitive drum 16. The image is transferred onto a material, and the transferred material is sent to a heating roller fixing device 26 to be fixed, and then sent out of the machine.
加熱ローラ定着装置２６は内部に通電により発熱する発
熱体を備えたヒータ３を備えた加熱ローラ１に加圧ロー
ラ２が圧接回転するものである。The heating roller fixing device 26 is a device in which a pressure roller 2 is rotated in pressure contact with a heating roller 1, which is equipped with a heater 3 having a heat generating element therein that generates heat when energized.
このような電子複写機に用いられる総電力は例えば１．
１ＫＷで定着装置２６ではヒータ３に８００Ｗ程度用い
られその他は移動光学系１３、感光ドラム１６、給紙部
２５、加熱ローラ１と加圧ローラ２、画像形成部から定
着装置２６までの搬送部等の駆動系統及び感光ドラム１
６の周囲に配した電子写真工程を行う装置の附勢に用い
られる。即ち、定着装置２６では大部分の電力を消費す
るようになっている。このため定着装置２６の効率を高
める工夫が種々なされている。The total power used for such an electronic copying machine is, for example, 1.
At 1KW, about 800W is used for the heater 3 in the fixing device 26, and other components include the moving optical system 13, the photosensitive drum 16, the paper feed section 25, the heating roller 1 and the pressure roller 2, and the conveyance section from the image forming section to the fixing device 26. drive system and photosensitive drum 1
It is used to energize the equipment that performs the electrophotographic process, which is arranged around 6. That is, the fixing device 26 consumes most of the power. For this reason, various efforts have been made to increase the efficiency of the fixing device 26.
従来、高効率定着装置に対する提案は、定着装置に加え
る電力が、定着のために有効に使われる有効電力Ｗｅと
定着に使われず損失となって逃げる熱量に相当する損失
電力Ｗｌｏｓｓを合わせたものであるということから、
特に損失電力Ｗｌｏｓｓを限りなく小さくしてゆこうと
いうものや、トナーの熱吸収がより効率的になされると
いった提案が多かった。Conventionally, proposals for high-efficiency fixing devices have been based on the idea that the power applied to the fixing device is a combination of effective power We, which is used effectively for fixing, and loss power Wloss, which corresponds to the amount of heat that is not used for fixing and escapes as a loss. Since there is
In particular, there were many proposals such as minimizing power loss Wloss and making toner absorb heat more efficiently.
一方限られた電源電力例えば１００Ｖ、１５Ａという制
限の中で高速定着を行うために、蓄ネルギーあるいは、
蓄熱という考え方に基づいて、定着動作が行われない時
に、蓄熱し、定着動作が行われる時に蓄熱したエネルギ
ーを放出し、高速定着を行うという提案もなされている
。On the other hand, in order to perform high-speed fixing within the limited power supply, for example, 100V, 15A, energy storage or
Based on the idea of heat storage, it has also been proposed to store heat when no fixing operation is performed and release the stored energy when a fixing operation is performed to perform high-speed fixing.
「発明が解決しようとしている課題」
しかしながら、未定着状態と定着状態との違いというの
を考えてみると、ただ単にトナーの形状が変形している
にすぎず、そのトナーのエネルギーの状態に大きな差が
ないことに気づく。つまり、未定着状態から定着状態へ
変化する間に高温の状態を１度経過するが、ふたたびト
ナー及び転写材は、放熱によって低温の状態にもどって
しまう。``Problem to be solved by the invention'' However, when we consider the difference between an unfixed state and a fixed state, we find that the shape of the toner is simply deformed, and the energy state of the toner has a large effect. Notice that there is no difference. That is, the toner and transfer material pass through a high temperature state once during the change from the unfixed state to the fixed state, but the toner and transfer material return to a low temperature state due to heat radiation.
従来、このトナー及び転写材へ与えられた熱を回収し再
利用するようなことは行わず、機外に廃熱するような形
にしていた。このため転写材及びトナーをある一定温度
にまであげるために必要な熱量はどうしても外から供給
しなければならなかった。Conventionally, the heat applied to the toner and transfer material has not been recovered and reused, but rather has been disposed of outside the machine. For this reason, the amount of heat necessary to raise the transfer material and toner to a certain temperature must be supplied from outside.
本発明は未定着画像を支持した転写材を熱定着する画像
形成装置においてトナー及び転写材に与えた熱を回収し
、再利用することによってより効率的な定着装置を備え
た画像形成装置を提供することを目的とするものである
。The present invention provides an image forming apparatus equipped with a more efficient fixing device by recovering and reusing the heat applied to toner and transfer material in an image forming apparatus that thermally fixes a transfer material supporting an unfixed image. The purpose is to
「課題を解決するための手段」
本発明は電子写真法・静電印刷法・磁気印刷法等により
転写紙・記録紙等の像支持材上に形成された未定着現像
剤像を該像支持材上に熱定着させる定着装置を備えた画
像形成装置において、定着装置において発生した熱エネ
ルギーを定着後の転写材から回収し、回収したエネルギ
ーを画像形成を行う装置へ再供給する装置を設けたこと
を特徴とする画像形成装置である。"Means for Solving the Problems" The present invention provides a method for transferring an unfixed developer image formed on an image support material such as a transfer paper or a recording paper by an electrophotographic method, an electrostatic printing method, a magnetic printing method, etc. In an image forming apparatus equipped with a fixing device for thermally fixing onto a material, a device is provided that recovers thermal energy generated in the fixing device from the transfer material after fixing and resupplies the recovered energy to the image forming device. This is an image forming apparatus characterized by the following.
「実 施 例」
第１図（ａ）は本発明の特徴を表わす実施例のフローシ
ートである。転写材ＰヘトナーＴを融着させる定着装ｊ
ｌ！１２６は第４図に示す位置にあり、定着装置２６の
転写材Ｐの出口側にトナーの熱を回収する蒸発器２７が
配設されている。"Example" FIG. 1(a) is a flow sheet of an example showing the characteristics of the present invention. Fixing device j that fuses the transfer material P and toner T
l! Reference numeral 126 is located at the position shown in FIG. 4, and an evaporator 27 is provided on the exit side of the transfer material P of the fixing device 26 to recover heat from the toner.
蒸発器２７で回収された熱エネルギーを機械的エネルギ
ーに変換する部分としてタービン２８が連設しである。A turbine 28 is connected as a part that converts the thermal energy recovered by the evaporator 27 into mechanical energy.
そしてタービン２８で発生した機械的エネルギーを電気
的エネルギーに変換する部分として発電機２９がタービ
ン２８に連結されている。発電機２９で発生した電気的
エネルギーを貯蔵する蓄電池３４が設けられている。ま
た凝縮器３５はタービン２８の排気を導いて熱交換器４
５により冷却凝縮させるものである。A generator 29 is connected to the turbine 28 as a part that converts the mechanical energy generated by the turbine 28 into electrical energy. A storage battery 34 is provided to store the electrical energy generated by the generator 29. The condenser 35 also guides the exhaust gas from the turbine 28 to the heat exchanger 4.
5 for cooling and condensation.
次にこれらの各部分について詳しく説明することにする
。Next, each of these parts will be explained in detail.
先ず定着装置２６についてのべると、ハロゲンヒーター
等の加熱用のヒータ３を内部に有する加熱ローラ１は駆
動モータ（不図示）からの駆動力を受けて矢印方向に回
転する。低い温度に加熱用のヒータ３°を内蔵する加圧
ローラ２は加熱ローラ１に圧接して転勤回転する。First, regarding the fixing device 26, a heating roller 1 having a heating heater 3 such as a halogen heater therein rotates in the direction of the arrow in response to a driving force from a driving motor (not shown). The pressure roller 2, which has a built-in heater 3° for heating at a low temperature, is in pressure contact with the heating roller 1 and rotates intermittently.
この加熱ローラ１は、アルミニウム、ステンレス、銅等
の金属製中空ローラ芯の該周面に四弗化エチレン樹脂等
の耐熱離型性樹脂層を２０〜８０μ厚に設けたものであ
る。The heating roller 1 is a hollow roller core made of metal such as aluminum, stainless steel, copper, etc., and a layer of heat-resistant mold release resin such as tetrafluoroethylene resin is provided on the circumferential surface of the core to a thickness of 20 to 80 μm.
加圧ローラ２はベアリング（不図示）に回転可能に支持
されている。この加圧ローラ２は加熱ローラ１に公知の
加圧手段によって少なくとも定着時に圧接し金属製ロー
ラ芯の該周面にシリコンゴム、フッソゴム、フロロシリ
コンゴム等の弾性体層を比較的厚く設けたものである。The pressure roller 2 is rotatably supported by a bearing (not shown). This pressure roller 2 is pressed against the heating roller 1 by a known pressure means at least during fixing, and has a relatively thick layer of elastic material such as silicone rubber, fluorosilicone rubber, or fluorosilicone rubber on the peripheral surface of a metal roller core. It is.
加熱ローラｌの外周面にはサーミスタ、熱雷対等の感温
素子４が接触配設され、その検出信号を公知の制御手段
（不図示）に導き、加熱ローラｌの外周面の温度をヒー
タ３の出力、又は、その印加電圧等を制御することでト
ナー像溶融温度に保持している。A temperature sensing element 4 such as a thermistor or a thermal lightning pair is disposed in contact with the outer peripheral surface of the heating roller l, and its detection signal is guided to a known control means (not shown) to control the temperature of the outer peripheral surface of the heating roller l by the heater 3. The toner image melting temperature is maintained by controlling the output or the applied voltage.
加熱ローラ１表面へ付着したオフセットトナー紙粉等の
異物をローラ表面から除去するためのクリーニング部材
６はノーメックス、ヒメロン等の耐熱不織布よりなるク
リーニングウェブ６ａを用いている。A cleaning member 6 for removing foreign matter such as offset toner paper powder adhering to the surface of the heating roller 1 from the roller surface uses a cleaning web 6a made of a heat-resistant nonwoven fabric such as Nomex or Himeron.
断熱材料よりなる放熱防止部材８は加熱ローラ１の表面
に所定の鉗離Ｉ２１で近接するような曲率を有し装置内
に固定されている。放熱防止部材８は加熱ローラ１周面
側の側面全体に熱反射性の金属薄表層７を一体的に有し
ている。この金属薄表層７は放熱防止部材８に対してほ
ぼ均一な厚みＣ数百μ程度）を有している。The heat radiation prevention member 8 made of a heat insulating material has a curvature such that it approaches the surface of the heating roller 1 at a predetermined spacing I21, and is fixed within the apparatus. The heat radiation prevention member 8 integrally has a heat reflective metal thin surface layer 7 on the entire side surface on the circumferential side of the heating roller 1 . This thin metal surface layer 7 has a substantially uniform thickness C (about several hundred microns) with respect to the heat radiation prevention member 8 .
方、加圧ローラ２側にも放熱防止部材８と同様の構成の
放熱防止部材ｌＯが加圧ローラ２の周面と所定の距！１
ｆ２２を隔て、その大部分を覆うように設けられている
。On the other hand, on the pressure roller 2 side, a heat radiation prevention member lO having the same structure as the heat radiation prevention member 8 is provided at a predetermined distance from the circumferential surface of the pressure roller 2. 1
It is provided so as to cover most of the area with f22 in between.
この放熱防止部材１０も加圧ローラ周面側の測面全体に
熱反射性の金属薄表層９をほぼ均一な厚み（数百μ程度
）有している。This heat radiation prevention member 10 also has a heat-reflective metal thin surface layer 9 with a substantially uniform thickness (approximately several hundred microns) over the entire circumferential surface of the pressure roller.
転写材Ｐを加熱ローラ１側に導く案内板２２は放熱防止
部材８，１０夫々の一端の間に位置し、加熱ローラ１に
近接して設けられている。A guide plate 22 that guides the transfer material P toward the heating roller 1 is located between one end of each of the heat radiation prevention members 8 and 10, and is provided close to the heating roller 1.
加圧ローラ２を支持する支持板２４をバネ２３によって
引上げることにより加圧ローラ２は加熱ローラ１に圧接
されている。未定着トナー像Ｔを有する転写材Ｐは、こ
の案内板２２を通過し、加熱、加圧ローラ周面側間で挟
持搬送され、ローラ１，２の表面温度による加熱によっ
てトナー像Ｔを定着され、その後排紙ローラ２０．２１
によって挟持されながら定着装置２６の外へ排出される
。The pressure roller 2 is brought into pressure contact with the heating roller 1 by pulling up a support plate 24 supporting the pressure roller 2 by a spring 23. The transfer material P having the unfixed toner image T passes through the guide plate 22 and is conveyed while being held between the circumferential surfaces of the heating and pressure rollers, and the toner image T is fixed by heating due to the surface temperature of the rollers 1 and 2. , then the paper ejection roller 20.21
The toner is ejected from the fixing device 26 while being held by the rollers.
この加熱ローラｌの排出側には転写材Ｐを加熱ローラ１
から確実に分離するためにローラ軸方向に沿って複数個
の分離爪５ａがローラ表面に接触して設けられている。The transfer material P is placed on the discharge side of the heating roller 1 by the heating roller 1.
A plurality of separation claws 5a are provided in contact with the roller surface along the roller axial direction to ensure separation from the roller.
又、加圧ローラ２の排出口側にも分離爪５ｂが加圧ロー
ラ２の表面に接触して設けられている。Further, a separation claw 5b is provided on the discharge port side of the pressure roller 2 so as to be in contact with the surface of the pressure roller 2.
分離爪５ａは、ケーシング部材１９と離間している支持
板１８に保持され、分離爪５ｂも定着装置下側のケーシ
ング部材１７と離間している支持板１８ａに保持されて
いる。The separation claw 5a is held by a support plate 18 that is spaced apart from the casing member 19, and the separation claw 5b is also held by a support plate 18a that is spaced from the casing member 17 on the lower side of the fixing device.
尚、ケーシング部材１９はクリーニング部材６、放熱防
止部材８、感温素子４とを包囲し、ケーシング部材１７
は加圧ローラ２の放熱防止部材１０と離間し、これらを
覆うように設けられて定着装置全体の底板を兼ねている
。The casing member 19 surrounds the cleaning member 6, the heat radiation prevention member 8, and the temperature sensing element 4, and the casing member 17
is spaced from and covers the heat radiation prevention member 10 of the pressure roller 2, and also serves as the bottom plate of the entire fixing device.
次に熱回収部である蒸発器２７についてのべる。蒸発器
２７は一定圧力に耐え、しかも熱伝導の良い金属材料、
例えば、ＡＱ、Ｃｕ等で作られている。この蒸発器２７
の内部には、アルコールやフロン、アセトンや水、ある
いはアンモニア等の熱媒体３０が入っている。定着装置
２６から排紙ローラ２０，２１対により排出された転写
材Ｐ及び該転写材に支持されたトナーＴは、蒸発器２７
の下面の伝熱面３３と接触するようにして排出され、搬
送ローラ３１，３２対によってさらに外部へ排出される
ようになっている。蒸発器２７は接続管４１によりター
ビン２８の入口に結合されている。タービン２８は、不
図示の固定羽根を有するケーシング、回転羽根４２と羽
根４２を固定した回転軸４３がら成り、その出口は凝縮
器３５に連通している。凝縮器３５では、密閉槽内部に
冷却水４６が通る熱交換器４５が収容されている。この
熱交換器４５は例えば銅でできている。凝縮器３５下部
には液だまり４８を有し、液だまり４８はパルプ５０、
戻り穴５１を介して蒸発器２７と通じている。Next, the evaporator 27, which is a heat recovery section, will be described. The evaporator 27 is made of a metal material that can withstand constant pressure and has good heat conduction.
For example, it is made of AQ, Cu, etc. This evaporator 27
A heating medium 30 such as alcohol, fluorocarbon, acetone, water, or ammonia is contained inside. The transfer material P discharged from the fixing device 26 by the pair of paper discharge rollers 20 and 21 and the toner T supported by the transfer material are transferred to the evaporator 27.
The paper is discharged so as to come into contact with the heat transfer surface 33 on the lower surface of the paper, and is further discharged to the outside by a pair of transport rollers 31 and 32. Evaporator 27 is connected to the inlet of turbine 28 by a connecting pipe 41 . The turbine 28 includes a casing having fixed blades (not shown), a rotating blade 42 , and a rotating shaft 43 to which the blade 42 is fixed, and an outlet thereof communicates with the condenser 35 . In the condenser 35, a heat exchanger 45 through which cooling water 46 passes is housed inside a closed tank. This heat exchanger 45 is made of copper, for example. There is a liquid pool 48 at the bottom of the condenser 35, and the liquid pool 48 contains pulp 50,
It communicates with the evaporator 27 via a return hole 51 .
バルブ５０は、第１図（ｂ）に示すようにパイプ状のバ
ルブ本体５０１の円筒孔５０１ａの中にスプール状の円
筒５０２が入っている。この円筒５０２の中央部には円
筒５０２の中心軸に直角に穴５０３がある。第１図（ｃ
）はこの円筒５０２の斜視図を示す。また円筒５０２は
周方向の溝を有し、ピストンリングのようなシール５０
４〜５０７が嵌入している。バルブ本体５１には液だま
り４８に向って開口する入口５０８及び蒸発器２８に向
って開口する出口５０９が設けられ、入口５０８と出口
５０９は軸方向にずれており、穴５０３が入口５０８と
出口５０９の間でシール５０５．５０６間がバルブ本体
の円筒孔５０１ａの壁面によって全部ふさがれ、蒸発器
２８と凝縮器３５が連通しないようになっている。この
円筒５０２を矢印Ｘのように往復運動させることにより
液たまり４８から蒸発器２７へ熱媒体３０を戻すように
している。As shown in FIG. 1(b), the valve 50 includes a spool-shaped cylinder 502 in a cylindrical hole 501a of a pipe-shaped valve body 501. There is a hole 503 in the center of this cylinder 502 perpendicular to the central axis of the cylinder 502. Figure 1 (c
) shows a perspective view of this cylinder 502. The cylinder 502 also has a circumferential groove and a seal 50 such as a piston ring.
4 to 507 are inserted. The valve body 51 is provided with an inlet 508 that opens toward the liquid pool 48 and an outlet 509 that opens toward the evaporator 28. The inlet 508 and the outlet 509 are offset in the axial direction, and the hole 503 509, the space between the seals 505 and 506 is completely closed by the wall surface of the cylindrical hole 501a of the valve body, so that the evaporator 28 and the condenser 35 are not communicated with each other. By reciprocating this cylinder 502 in the direction of arrow X, the heat medium 30 is returned from the liquid pool 48 to the evaporator 27.
タービン２８の回転軸４３は発電機２９の回転軸４４と
連結されている。発電機２９の出力端から蓄電池３４に
配線されている。A rotating shaft 43 of the turbine 28 is connected to a rotating shaft 44 of the generator 29. Wiring is made from the output end of the generator 29 to the storage battery 34 .
上記において蒸発器の伝熱面３３を除いて、蒸発器２７
、タービン２８は一体的にされ、その外側全体を例えば
発泡スチロール等を一体成形して高い断熱性を有してい
る（不図示）。In the above, except for the heat transfer surface 33 of the evaporator, the evaporator 27
, the turbine 28 is integrally formed, and the entire outside thereof is integrally molded with foamed polystyrene or the like to have high heat insulation properties (not shown).
上記構成における作用をのべると、転写材Ｐがヒータ３
により加熱昇温している加熱ローラｌ、補助のヒータ３
°により加熱昇温している加圧ローラ２のニップ部を通
過する際に、主として加熱ローラｌにより転写材Ｐはそ
の表面がトナーＴと共に加熱され、又転写材Ｐの裏面は
加圧ローラ２により加熱されて温度上昇し、排紙ローラ
２０．２１対をとおり蒸発器２７の伝熱面３３と摺擦し
て、該伝熱面３３を介して蒸発器内部の熱媒体３０を加
熱し、熱を奪われて搬送ローラ３１，３２対により外部
へ排出される。蒸発器２７で蒸発した熱媒体は接続管４
１を通じてタービン２８へ入り羽根４２に作用して回転
軸４２を回転し、発電機２９を駆動し、発電機２９の電
力は蓄電池３４に貯えられる。To summarize the operation in the above configuration, the transfer material P is heated to the heater 3.
The heating roller 1, which is heating up due to heating, and the auxiliary heater 3
When the transfer material P passes through the nip portion of the pressure roller 2 whose temperature is heated by The paper passes through the pair of discharge rollers 20 and 21, rubs against the heat transfer surface 33 of the evaporator 27, and heats the heat medium 30 inside the evaporator via the heat transfer surface 33. The heat is removed and the paper is discharged to the outside by a pair of transport rollers 31 and 32. The heat medium evaporated in the evaporator 27 is transferred to the connecting pipe 4
1 enters the turbine 28 and acts on the blades 42 to rotate the rotating shaft 42 and drive the generator 29, and the electric power of the generator 29 is stored in the storage battery 34.
Ｍ電池３４の電力は一部は直接、残りはＤ／Ａ変換器を
介して上述した画像形成装置の所要部へ供給される。一
方タービン２８を出た蒸気は凝縮器３５中で熱交換器４
５中をとおる水４６により冷却され凝縮して、その回り
に液滴となり、液だまり４８に集められる。液だまり中
の熱媒体３０はバルブ５０のＸ方向の往復作用により蒸
発器２７に戻り循環する。Part of the power from the M battery 34 is supplied directly, and the rest is supplied to the necessary parts of the image forming apparatus described above via the D/A converter. On the other hand, the steam exiting the turbine 28 is transferred to the heat exchanger 4 in the condenser 35.
It is cooled and condensed by the water 46 passing through 5, forming droplets around it, and collected in a liquid pool 48. The heat medium 30 in the liquid pool is circulated back to the evaporator 27 by the reciprocating action of the valve 50 in the X direction.
「他の実施例」
前記実施例は、転写材及びトナーのみから熱を吸収し再
利用するという形になっているが、より効率的な熱回収
を計るという点から考えると定着装置２６の例えば加熱
ローラ１から放熱されてしまう熱も再利用する形にした
方が有利であり、また、機内昇温防止という点からも利
点がある。第２図は、そ□一実施例を示したものである
。図中第１図と同符号の部分即ち、蒸発器以外は第１図
と同様であり、説明を省略し、異る蒸発器２７ａについ
て説明する。蒸発器２７ａは伝熱面３３を設けた以外に
定着装置上部を覆っており、定着装置２６に面する伝熱
面は熱伝導の良い材料で作られ、上部及び周囲は不図示
の断熱材を有する。定着ローラｌの長平方向の両側は中
空となっていて熱媒体３ｏは伝熱面を介して定着装置２
６上部を囲繞している。"Other Embodiments" In the above embodiments, heat is absorbed and reused only from the transfer material and toner, but from the point of view of more efficient heat recovery, for example, the fixing device 26 It is advantageous to reuse the heat that would otherwise be radiated from the heating roller 1, and is also advantageous in terms of preventing temperature rise inside the machine. FIG. 2 shows one embodiment. The parts in the figure having the same symbols as in FIG. 1, that is, the parts other than the evaporator are the same as in FIG. In addition to providing a heat transfer surface 33, the evaporator 27a covers the top of the fixing device, and the heat transfer surface facing the fixing device 26 is made of a material with good thermal conductivity, and the top and surroundings are covered with a heat insulating material (not shown). have Both sides of the fixing roller l in the longitudinal direction are hollow, and the heat medium 3o is transferred to the fixing device 2 via the heat transfer surface.
6 It surrounds the upper part.
これによって熱媒体３０は転写材Ｐにより伝熱面３３か
ら加熱されると共に加熱ローラ１からの放熱も受は加熱
される。加熱ローラ１は待機状態でも加熱されており、
常時放熱しているから、定着装置２６からの熱の回収量
は前記第１の実施例よりも大きい。As a result, the heat medium 30 is heated by the transfer material P from the heat transfer surface 33, and the heat radiated from the heating roller 1 is also heated. The heating roller 1 is heated even in the standby state,
Since heat is constantly radiated, the amount of heat recovered from the fixing device 26 is greater than in the first embodiment.
「更に他の実施例」
前記実施例においては熱エネルギーを機械的エネルギー
に、そして機械的エネルギーを電気的エネルギーに、そ
してまた蓄電ということでいわば化学的エネルギーに変
換したと言える。"Further Embodiments" In the embodiments described above, it can be said that thermal energy was converted into mechanical energy, mechanical energy was converted into electrical energy, and, by storing electricity, it was converted into chemical energy.
しかしながら、これらの変換にはどうしても損失が伴な
う。そこで熱エネルギーをそのまま熱エネルギーとして
、あるいは機械的エネルギーとして使うことも可能であ
る。例えば熱エネルギーをそのまま熱として利用する例
として、定着前の転写材Ｐに熱をあたえておく、つまり
、給紙部２５の転写材Ｐを予熱するあるいは感光ドラム
１６等へ熱供給を行う例を第３図に示す。これは第４図
の電子複写機や電子写真を利用したプリンターに適用し
た例である。However, these conversions inevitably involve losses. Therefore, it is possible to use thermal energy directly as thermal energy or as mechanical energy. For example, as an example of directly using thermal energy as heat, heat is applied to the transfer material P before fixing, that is, an example of preheating the transfer material P in the paper feed section 25 or supplying heat to the photosensitive drum 16, etc. It is shown in Figure 3. This is an example of application to an electronic copying machine or a printer using electronic photography as shown in FIG.
蒸発器２７ａと給紙部２５及び感光ドラム１６間には夫
々熱媒体蒸気搬送パイプ３７゜３８が設けられている。Heat medium vapor conveying pipes 37 and 38 are provided between the evaporator 27a, the paper feed section 25, and the photosensitive drum 16, respectively.
該パイプ３７．３８には正逆転方向に可変速駆動される
タービンポンプ３９．４０が介装されている。該パイプ
３７゜３８の端末は凝縮器５２．５３となっている。A turbine pump 39,40 that is driven at variable speed in forward and reverse directions is interposed in the pipe 37,38. The ends of the pipes 37 and 38 are condensers 52 and 53.
蒸発器２７ａの熱媒体３０は定着装置２６の発生熱及び
転写材Ｐの熱で加熱され、蒸発し、熱媒体蒸気搬送パイ
プ３７．３８を通じ、タービンポンプ３９，４０を介し
て凝縮器５２゜５３へ送られ、凝縮器５２では給紙部２
５の低温の転写材Ｐと熱交換して凝縮し、転写材Ｐを加
熱し、不図示のポンプ等を用いた給送手段で蒸発器２７
ａへ戻され、凝縮器５３で感光ドラム１６により冷却さ
れ、凝縮し、感光ドラム１６を加熱し、不図示のポンプ
等を用いた給送手段で蒸発器２７ａへ戻される。The heat medium 30 of the evaporator 27a is heated by the heat generated by the fixing device 26 and the heat of the transfer material P, evaporates, and is transferred to the condenser 52, 53 through the heat medium vapor conveying pipe 37, 38 and the turbine pumps 39, 40. In the condenser 52, the paper is sent to the paper feed section 2.
The transfer material P is condensed by exchanging heat with the low-temperature transfer material P of No.
a, is cooled and condensed by the photosensitive drum 16 in the condenser 53, heats the photosensitive drum 16, and is returned to the evaporator 27a by a feeding means using a pump (not shown) or the like.
上記において、タービンポンプ３９・、４０は感光ドラ
ム１６内及び給紙部２５における放熱の調整を行う。つ
まり感光ドラム１６及び給紙部２５に熱を多く与えたい
時は、タービンポンプ３９．４０の吐出圧力を上げるよ
うにタービンポンプ３９，４０を回転させ、あ′まり熱
供給を行わない場合は逆にタービンとして用いて例えば
発電制動して吐出側の圧力を低下させるようにタービン
ポンプ３９，４０を回転させる。In the above, the turbine pumps 39 and 40 adjust heat radiation within the photosensitive drum 16 and the paper feed section 25. In other words, when it is desired to supply a large amount of heat to the photosensitive drum 16 and paper feed section 25, the turbine pumps 39 and 40 are rotated to increase the discharge pressure of the turbine pumps 39 and 40, and when it is desired to supply less heat, it is reversed. The turbine pumps 39 and 40 are rotated so as to reduce the pressure on the discharge side by, for example, performing dynamic braking.
これにより給紙部２５及び感光ドラム１６の温度を調節
することができる。以上は定着部での廃熱を熱として再
ＩＩＩ用した例であるが定着装置２６での廃熱をタービ
ン２８により機械的エネルギーに変換し、タービン２８
に冷却ファンを連結し回転させるというような形で利用
することも可能である。This allows the temperatures of the paper feed section 25 and the photosensitive drum 16 to be adjusted. The above is an example in which the waste heat in the fixing unit is used again as heat, but the waste heat in the fixing device 26 is converted into mechanical energy by the turbine 28, and
It is also possible to use it by connecting a cooling fan to the unit and rotating it.
その他定着装置２６での廃熱を熱から直接電気エネルギ
ーに変換するために熱起電力を利用することも可能であ
る。In addition, it is also possible to use thermoelectromotive force to directly convert waste heat from the fixing device 26 into electrical energy.
［発明の効果］
以上説明したように加熱定着装置における転写材及びト
ナーからの放熱及び定着装置からの放熱として従来廃熱
されていた熱を再利用するようにしたので加熱定着装置
を備えた画像形成装置の動力を節減することができる。[Effects of the Invention] As explained above, since the heat that was conventionally wasted is reused as heat radiation from the transfer material and toner in the heat fixing device and heat radiation from the fixing device, images equipped with the heat fixing device can be improved. The power of the forming device can be saved.
第１図ｔａ）は本発明の実施例のフローシート、第１図
（ｂｌは第１図ｔａ＋のバルブの縦断面図、第１図ｔｅ
ｌはバルブの斜視図、第２図は他の実施例のフローシー
ト、第３図は更に他の実施例のフローシート、第４図は
電子複写機の縦断面図である。
ｌ・・加熱ローラ ２・・加圧ローラ ３゜３° ・・
ヒータ ２７・・蒸発器 ２８・・タービン ２９・・
発電機 ３５・・凝縮器。
第
図
（６）Fig. 1 ta) is a flow sheet of the embodiment of the present invention, Fig. 1 (bl is a vertical cross-sectional view of the valve of Fig. 1 ta+, Fig.
1 is a perspective view of a valve, FIG. 2 is a flow sheet of another embodiment, FIG. 3 is a flow sheet of still another embodiment, and FIG. 4 is a longitudinal sectional view of an electronic copying machine. l... Heating roller 2... Pressure roller 3°3°...
Heater 27...Evaporator 28...Turbine 29...
Generator 35... Condenser. Figure (6)
Claims (1)
紙・記録紙等の像支持材上に形成された未定着現像剤像
を該像支持材上に熱定着させる定着装置を備えた画像形
成装置において、定着装置において発生した熱エネルギ
ーを定着後の転写材から回収し、回収したエネルギーを
画像形成を行う装置へ再供給する装置を設けたことを特
徴とする画像形成装置。1. Equipped with a fixing device that thermally fixes an unfixed developer image formed on an image support material such as transfer paper or recording paper by electrophotography, electrostatic printing, magnetic printing, etc. onto the image support material. 1. An image forming apparatus comprising: a device for recovering thermal energy generated in a fixing device from a transfer material after fixing, and resupplying the recovered energy to an image forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1314840A JPH03174570A (en) | 1989-12-04 | 1989-12-04 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1314840A JPH03174570A (en) | 1989-12-04 | 1989-12-04 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03174570A true JPH03174570A (en) | 1991-07-29 |
Family
ID=18058237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1314840A Pending JPH03174570A (en) | 1989-12-04 | 1989-12-04 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03174570A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005181778A (en) * | 2003-12-22 | 2005-07-07 | Kyocera Mita Corp | Image forming apparatus |
| JP2005241660A (en) * | 2003-12-22 | 2005-09-08 | Kyocera Mita Corp | Image forming apparatus |
| EP1542092A3 (en) * | 2003-12-08 | 2005-10-12 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
-
1989
- 1989-12-04 JP JP1314840A patent/JPH03174570A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1542092A3 (en) * | 2003-12-08 | 2005-10-12 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| US7609988B2 (en) | 2003-12-08 | 2009-10-27 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit time |
| US7664410B2 (en) | 2003-12-08 | 2010-02-16 | Ricoh Company, Ltd. | Image forming apparatus with control of power to a fixing unit |
| US7885569B2 (en) | 2003-12-08 | 2011-02-08 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit |
| US7957663B2 (en) | 2003-12-08 | 2011-06-07 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| JP2005181778A (en) * | 2003-12-22 | 2005-07-07 | Kyocera Mita Corp | Image forming apparatus |
| JP2005241660A (en) * | 2003-12-22 | 2005-09-08 | Kyocera Mita Corp | Image forming apparatus |
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