JPH1026893A - Electrophotographic device - Google Patents
Electrophotographic deviceInfo
- Publication number
- JPH1026893A JPH1026893A JP18295296A JP18295296A JPH1026893A JP H1026893 A JPH1026893 A JP H1026893A JP 18295296 A JP18295296 A JP 18295296A JP 18295296 A JP18295296 A JP 18295296A JP H1026893 A JPH1026893 A JP H1026893A
- Authority
- JP
- Japan
- Prior art keywords
- heating roller
- roller
- electrophotographic apparatus
- printing paper
- pressure roller
- 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.)
- Granted
Links
Landscapes
- Fixing For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子写真装置に関
し、更に詳しくは、電子写真プロセスを用いたプリン
タ、ファクシミリ及び複写機等の電子写真装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus, and more particularly, to an electrophotographic apparatus such as a printer, a facsimile, and a copying machine using an electrophotographic process.
【０００２】[0002]
【従来の技術】従来の電子写真装置には、現像剤として
乾式トナーを使用し、内部に備えた熱源で加熱される加
熱ローラと、加熱ローラに圧接された弾性体から成る加
圧ローラとを有する定着部に、未定着トナー像を転写し
た印字用紙（記録紙）を挿入して両ローラによって圧着
し、未定着トナー像を溶融させて印字用紙に定着させる
ように構成したものがある。2. Description of the Related Art A conventional electrophotographic apparatus uses a dry toner as a developer and includes a heating roller heated by a heat source provided therein and a pressure roller made of an elastic body pressed against the heating roller. Some fixing units have a configuration in which printing paper (recording paper) onto which an unfixed toner image has been transferred is inserted and pressed by both rollers, so that the unfixed toner image is melted and fixed on the printing paper.
【０００３】上記定着時には、未定着トナー像だけでな
く印字用紙も加熱ローラによって熱せられる。この際、
印字用紙全体が均等に加熱されることが望ましいが、加
圧ローラ側には熱源が無いため、印字用紙の印字面であ
る加熱ローラ側の第１面と、加圧ローラ側の第２面との
間に温度差が生じる。両面間の温度差が大きくなると、
印字用紙にカールが発生する。カールの程度は、主に、
印字用紙の含水量、材質、厚さ、転写されるトナーの量
等に影響される。At the time of fixing, not only the unfixed toner image but also the printing paper is heated by the heating roller. On this occasion,
It is desirable that the entire printing paper is uniformly heated, but since there is no heat source on the pressure roller side, the first surface of the heating roller side, which is the printing surface of the printing paper, and the second surface of the pressure roller side A temperature difference occurs between the two. When the temperature difference between both sides increases,
Curling occurs on the printing paper. The degree of curl is mainly
It is affected by the water content, material, thickness, amount of transferred toner and the like of the printing paper.
【０００４】カールは、定着部を通過する印字用紙の第
１、第２面間における温度差がほぼ一定の場合には印字
用紙全体に発生し、また、加熱ローラの熱容量が小さい
場合には印字用紙の先端部のみに発生する。カールは、
定着部以降の搬送経路で用紙の搬送不良を発生させる一
因となる。特に、用紙先端部に生じたカールは、第１面
に対する印字の終了後に第２面にも印字する両面印字を
行う場合に、定着部での搬送不良の原因となる。[0004] Curling occurs on the entire printing paper when the temperature difference between the first and second surfaces of the printing paper passing through the fixing unit is substantially constant, and when the heat capacity of the heating roller is small, the curling occurs. Occurs only at the leading edge of the paper. Curl is
This contributes to the occurrence of paper conveyance failure in the conveyance path after the fixing unit. In particular, the curl generated at the leading end of the sheet causes a conveyance failure in the fixing unit when performing double-sided printing in which printing is also performed on the second surface after printing on the first surface is completed.
【０００５】従来、カール防止機能を備えた装置として
以下の装置が知られている。第１は、印字用紙の含水
量、厚さ、印字濃度（印字用紙上のトナー量）を予め測
定し、測定結果に応じて加圧ローラの位置を移動させ
て、加圧ローラと加熱ローラとのニップ部の姿勢を、印
字用紙の進入方向に対して変更させる定着装置（特開昭
６４−９４８４号参照）である。第２は、加熱ローラ及
び加圧ローラ夫々の回転中心を結ぶ直線に垂直で両ロー
ラのニップ部を通過する直線と、このニップ部と排出ロ
ーラ対のニップ部とを結ぶ直線が成す角度を変更可能に
した画像形成装置である（特開平４−１５９５８４号参
照）。Conventionally, the following devices have been known as devices having a curl prevention function. First, the water content, thickness, and printing density (toner amount on the printing paper) of the printing paper are measured in advance, and the position of the pressing roller is moved according to the measurement result. (See JP-A-64-9484). Second, the angle formed by a straight line passing through the nip portion of both rollers perpendicular to a straight line connecting the rotation centers of the heating roller and the pressure roller and a straight line connecting the nip portion and the nip portion of the discharge roller pair is changed. This is an image forming apparatus which is enabled (see Japanese Patent Application Laid-Open No. 4-159584).
【０００６】また、カールに起因するジャム対処機能を
備えた装置として、用紙搬送経路が定着部に向かって斜
め上方を向くように構成し、印字用紙の冷却を効率的に
行うことによってカールの発生を抑制すると共に、発生
したジャム処理を容易に行うことができるように構成し
た定着装置（特開平５−６１１７号参照）がある。In addition, as a device having a function to cope with a jam caused by curling, the paper conveying path is directed obliquely upward toward the fixing portion, and the curl is generated by efficiently cooling the printing paper. There is a fixing device (refer to Japanese Patent Application Laid-Open No. Hei 5-6117) which is configured to suppress the occurrence of the jam and to easily perform the jam processing.
【０００７】[0007]
【発明が解決しようとする課題】近年、電子写真装置で
は、小型化、低価格化のニーズに伴う省スペース及び省
電力の実現のため、加熱ローラが一層小径化される傾向
にあり、この場合、熱容量が小さくなって用紙先端部に
カールが発生し易い問題がある。しかし、上記公報記載
の従来の定着部装置や画像形成装置では、カールの発生
を抑えることはできるものの、構造が複雑なため省スペ
ースが難しくコスト高を招くため、電子写真装置には採
用し難い。In recent years, in an electrophotographic apparatus, the diameter of a heating roller has tended to be further reduced in order to realize space saving and power saving accompanying the need for downsizing and cost reduction. In addition, there is a problem that the heat capacity is reduced and curl is easily generated at the leading end of the sheet. However, in the conventional fixing unit and image forming apparatus described in the above-mentioned publications, although curling can be suppressed, the structure is complicated, so that space saving is difficult and cost is increased, so that it is difficult to employ the electrophotographic apparatus. .
【０００８】本発明は、上記に鑑み、記録紙に生じるカ
ール防止機能を有する電子写真装置を簡素な構成によっ
て得ることができ、小型化及び低価格化の実現が可能な
電子写真装置を提供することを目的とする。また、本発
明は、特に記録紙先端部に生じるカールに対して有効に
作用し、両面印字する際に好適な電子写真装置を提供す
ることを目的とする。SUMMARY OF THE INVENTION In view of the above, the present invention provides an electrophotographic apparatus having a function of preventing a curl generated on a recording sheet with a simple structure, and capable of realizing miniaturization and cost reduction. The purpose is to: Another object of the present invention is to provide an electrophotographic apparatus which effectively acts particularly on curling generated at the leading end of a recording sheet and is suitable for performing double-sided printing.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明の電子写真装置では、加熱ローラ及び該加熱
ローラに接触する加圧ローラを有する定着部を備え、搬
送路を経由して搬送される記録紙を該記録紙の未定着ト
ナー像が転写された第１面を加熱ローラ側に向けた状態
で前記定着部に進入させ、前記加熱ローラと加圧ローラ
との間で前記記録紙を加熱及び圧着することにより未定
着トナー像を定着させる電子写真装置において、前記定
着部の搬送路上流側に、記録紙の前記第１面の裏側の第
２面を加熱する予熱部を備えることを特徴とする。In order to achieve the above object, an electrophotographic apparatus according to the present invention includes a fixing unit having a heating roller and a pressure roller that comes into contact with the heating roller. The conveyed recording paper enters the fixing section with the first surface of the recording paper on which the unfixed toner image has been transferred facing the heating roller, and the recording paper is moved between the heating roller and the pressure roller. In an electrophotographic apparatus for fixing an unfixed toner image by heating and pressing a sheet of paper, a preheating unit for heating a second surface of the recording sheet, which is on the back side of the first surface, is provided upstream of the fixing unit in a conveying path. It is characterized by the following.
【００１０】本発明の電子写真装置では、定着時に発生
する記録紙のカールを防止する機能を備えた電子写真装
置を、簡素な構成によって得ることができるので、小型
化及び低価格化の実現が可能となる。According to the electrophotographic apparatus of the present invention, an electrophotographic apparatus having a function of preventing the curling of the recording paper generated at the time of fixing can be obtained with a simple configuration, so that miniaturization and cost reduction can be realized. It becomes possible.
【００１１】好ましくは、前記予熱部と加熱ローラとを
連結して該加熱ローラの熱を予熱部に伝える熱伝達部を
備える。[0011] Preferably, a heat transfer unit is provided for connecting the preheating unit and the heating roller and transmitting heat of the heating roller to the preheating unit.
【００１２】また、前記加圧ローラの回転中心軸が、前
記加熱ローラの回転中心軸より予熱プレート側に位置す
ることが好ましい。この構成によると、記録紙全体に生
じるカールはもとより記録紙先端部に生じるカールも有
効に抑えることができるので、両面印字する際の搬送不
良を効果的に解消することができる。It is preferable that the rotation center axis of the pressure roller is located closer to the preheating plate than the rotation center axis of the heating roller. According to this configuration, not only the curl generated on the entire recording paper but also the curl generated on the leading edge of the recording paper can be effectively suppressed, so that a conveyance failure in performing double-sided printing can be effectively eliminated.
【００１３】[0013]
【発明の実施の形態】次に、実施形態例により本発明を
具体的に説明する。図１は、本発明に係る電子写真装置
の一実施形態例における要部を示す側面図、図２は、同
電子写真装置の平面図、図３は、両面印字を行う際の同
電子写真装置の要部を示す側面図である。Next, the present invention will be described in detail with reference to embodiments. FIG. 1 is a side view showing a main part of an embodiment of an electrophotographic apparatus according to the present invention, FIG. 2 is a plan view of the electrophotographic apparatus, and FIG. It is a side view which shows the principal part of.
【００１４】図１及び図２に示すように、電子写真装置
は、加熱ローラ１１と、加熱ローラ１１に接触する加圧
ローラ１４とを有する定着部を備えている。搬送路を搬
送される印字用紙（記録紙）１５を、印字用紙１５の未
定着トナー像が転写された第１面１５ａを加熱ローラ１
４側に向けた状態で定着部に進入させて、両ローラ１
１、１４間で加熱及び圧着することにより、未定着トナ
ー像を第１面１５ａに定着させて印字（画像形成）す
る。また、電子写真装置は、定着部の搬送路上流側に、
印字用紙１５における第１面１５ａの裏側の第２面１５
ｂを、定着部での定着処理に先だって加熱する予熱プレ
ート（予熱部）１７を備える。予熱プレート１７は、印
字用紙１５の搬送方向Ａと直交する方向に長い長方形状
に形成されている。As shown in FIGS. 1 and 2, the electrophotographic apparatus includes a fixing unit having a heating roller 11 and a pressure roller 14 that contacts the heating roller 11. The printing paper (recording paper) 15 conveyed through the conveyance path is heated by the heating roller 1 on the first surface 15a of the printing paper 15 on which the unfixed toner image is transferred.
4 into the fixing section with the roller 1
The unfixed toner image is fixed on the first surface 15a by heating and pressure bonding between the first and the 14th and printed (image formation). Further, the electrophotographic apparatus is provided on the upstream side of the conveyance path of the fixing unit.
The second surface 15 on the back side of the first surface 15a of the printing paper 15
b is provided with a preheating plate (preheating unit) 17 for heating prior to the fixing process in the fixing unit. The preheating plate 17 is formed in a rectangular shape that is long in a direction orthogonal to the transport direction A of the printing paper 15.
【００１５】予熱プレート１７は、両端部に、一対の連
結アーム１８を一体に備えている。予熱プレート１７
は、一対の連結アーム１８の先端部に夫々形成された嵌
合孔１１ｂが、加熱ローラ１１の回転中心軸１１ａの両
端部に嵌合されることにより、図１のように、加熱ロー
ラ１１及び加圧ローラ１４に対して所定の角度を維持す
るように連結されている。The preheating plate 17 is integrally provided with a pair of connecting arms 18 at both ends. Preheating plate 17
As shown in FIG. 1, the fitting holes 11 b formed at the distal ends of the pair of connecting arms 18 are fitted to both ends of the rotation center shaft 11 a of the heating roller 11. It is connected so as to maintain a predetermined angle with respect to the pressure roller 14.
【００１６】予熱プレート１７及び一対の連結アーム１
８は、ステンレス、アルミニュウム合金、洋白及びリン
青銅等の熱伝導率が高い材料によって構成することがで
きる。予熱プレート１７及び一対の連結アーム１８は、
同じ材質から成る別部材を互いに組み合わせることによ
って構成することができ、或いは、異なる材質から成る
別部材を互いに組み合わせることによっても構成するこ
とができる。また、予熱プレート１７及び一対の連結ア
ーム１８は、同一材料で一体成形することによっても得
ることができる。A preheating plate 17 and a pair of connecting arms 1
8 can be made of a material having a high thermal conductivity such as stainless steel, an aluminum alloy, nickel silver and phosphor bronze. The preheating plate 17 and the pair of connecting arms 18
It can be configured by combining different members made of the same material with each other, or by combining other members made of different materials with each other. The preheating plate 17 and the pair of connecting arms 18 can also be obtained by integrally molding the same material.
【００１７】更に、加圧ローラ１４の回転中心軸１４ａ
は、加熱ローラ１１の回転中心軸１１ａより予熱プレー
ト１７側に位置するように設けられている。これによ
り、搬送路を経由して搬送される印字用紙１５は、両ロ
ーラ１１、１４間のニップ部ｎを通過した後に、図の上
方側に反り返るように若干カールされる。これにより、
全体的にカールされた印字用紙１５の形状を矯正するこ
とができる。Further, the rotation center shaft 14a of the pressure roller 14
Is provided on the preheating plate 17 side with respect to the rotation center axis 11a of the heating roller 11. As a result, the printing paper 15 conveyed via the conveyance path is slightly curled to warp upward in the drawing after passing through the nip n between the rollers 11 and 14. This allows
The shape of the printing paper 15 curled as a whole can be corrected.
【００１８】上記構成の電子写真装置では、まず、主電
源がオンして加熱ローラ１１が加熱されると、その熱が
一対の連結アーム１８を経由して予熱プレート１７に伝
えられて、予熱プレート１７が加熱される。この状態で
は、未定着トナー像を第１面１５ａに転写された印字用
紙１５が、図１右方から用紙搬送路Ａに沿って定着部に
進入する直前に、第２面１５ｂを予熱プレート１７上で
予熱される。これにより、加熱ローラ１１の表面温度
と、印字用紙１５の裏面である第２面１５ｂとの温度差
が小さくなるため、印字用紙１５の特に先端部のカール
が抑えられる。In the electrophotographic apparatus having the above structure, first, when the main power supply is turned on and the heating roller 11 is heated, the heat is transmitted to the preheating plate 17 via the pair of connecting arms 18 and the preheating plate 17 is heated. 17 is heated. In this state, immediately before the printing paper 15 on which the unfixed toner image has been transferred to the first surface 15a enters the fixing section along the paper transport path A from the right in FIG. Preheated on. Thereby, the temperature difference between the surface temperature of the heating roller 11 and the second surface 15b, which is the back surface of the printing paper 15, is reduced, so that the curling of the printing paper 15, particularly at the leading end, is suppressed.
【００１９】両面印字を施す場合には、また、図３に示
すように、未定着トナー像の溶融、定着を第１面１６ａ
に既に施された印字用紙１６は、先端部１６ｃが第１面
１６ａ側にカールされている。この際、加圧ローラ１４
が加熱ローラ１１に対して用紙搬送路Ａ上流側に変位し
ているため、両ローラ１１、１４は、同図右方から同搬
送路Ａに沿って定着部に進入する印字用紙１６を、加圧
ローラ１４側に曲げるように導く。従って、先端部１６
ｃがカールされた印字用紙１６は、用紙搬送路Ａを加圧
ローラ１４側に導かれ、第２面１６ｂ側へのカールを有
効に抑えられながら定着部をスムーズに通過する。これ
により、両面印字する際に生じ易い用紙搬送不良が効果
的に防止される。When performing double-sided printing, as shown in FIG. 3, the melting and fixing of the unfixed toner image are performed on the first surface 16a.
In the printing paper 16 already applied to the printer, the leading end 16c is curled toward the first surface 16a. At this time, the pressure roller 14
Are displaced upstream of the paper transport path A with respect to the heating roller 11, the rollers 11 and 14 apply printing paper 16 entering the fixing section along the transport path A from the right side in FIG. It is guided to bend to the pressure roller 14 side. Therefore, the tip 16
The print paper 16 with the curl c is guided along the paper transport path A toward the pressure roller 14 and smoothly passes through the fixing unit while curling toward the second surface 16b is effectively suppressed. As a result, a sheet conveyance failure that is likely to occur when performing double-sided printing is effectively prevented.
【００２０】以上のように、本電子写真装置では、加熱
ローラ１１及び加圧ローラ１４等に対する特殊な材料や
制御が必要なく、予熱プレート１７も安価に製造可能で
あり、また予熱プレート１７の追加による加熱ローラ１
１の熱量損失が小さいと共に加熱ローラ１１の熱源の変
更が必要が無いため、上記効果に加え、装置構成を簡略
化させて、装置軽量化及び低消費電力化を実現させるこ
とが可能となる。As described above, in the present electrophotographic apparatus, no special material or control is required for the heating roller 11 and the pressure roller 14, and the preheating plate 17 can be manufactured at low cost. Heating roller 1
Since the heat loss of (1) is small and there is no need to change the heat source of the heating roller 11, in addition to the above-mentioned effects, it is possible to simplify the device configuration, and realize a reduction in device weight and power consumption.
【００２１】なお、前記実施形態例では、本発明の予熱
部を長方形状の予熱プレート１７として説明したが、予
熱部の形状は長方形に限らず任意に設定できる。In the above-described embodiment, the preheating portion of the present invention is described as a rectangular preheating plate 17, but the shape of the preheating portion is not limited to a rectangle, but can be set arbitrarily.
【００２２】以上、本発明をその好適な実施形態例に基
づいて説明したが、本発明の電子写真装置は、上記実施
形態例の構成にのみ限定されるものではなく、上記実施
形態例の構成から種々の修正及び変更を施した電子写真
装置も、本発明の範囲に含まれる。As described above, the present invention has been described based on the preferred embodiments. However, the electrophotographic apparatus of the present invention is not limited to the configuration of the above-described embodiment, but rather the configuration of the above-described embodiment. An electrophotographic apparatus in which various modifications and changes have been made is also included in the scope of the present invention.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
記録紙を予熱部で予熱することにより、加熱ローラの表
面温度と記録紙の第２面との温度差を小さくして記録紙
のカールを抑えることができるので、定着時に記録紙に
発生するカールを効果的に防止することができる。As described above, according to the present invention,
By preheating the recording paper in the preheating unit, the temperature difference between the surface temperature of the heating roller and the second surface of the recording paper can be reduced to suppress the curling of the recording paper. Can be effectively prevented.
【図１】本発明に係る電子写真装置の要部を示す側面図
である。FIG. 1 is a side view showing a main part of an electrophotographic apparatus according to the present invention.
【図２】図１の電子写真装置の要部を示す平面図であ
る。FIG. 2 is a plan view showing a main part of the electrophotographic apparatus of FIG.
【図３】両面印字を行う際の同電子写真装置の要部を示
す側面図である。FIG. 3 is a side view showing a main part of the electrophotographic apparatus when performing double-sided printing.
１１ 加熱ローラ １１ａ、１４ａ 回転中心軸 １４ 加圧ローラ １５、１６ 印字用紙（記録紙） １５ａ、１６ａ 第１面 １５ｂ、１６ｂ 第２面 １７ 予熱プレート（予熱部） １８ 連結アーム（熱伝達部） Ａ 用紙搬送路 Reference Signs List 11 heating roller 11a, 14a rotation center axis 14 pressure roller 15, 16 printing paper (recording paper) 15a, 16a first surface 15b, 16b second surface 17 preheating plate (preheating portion) 18 connecting arm (heat transfer portion) A Paper transport path
Claims (3)
加圧ローラを有する定着部を備え、搬送路を経由して搬
送される記録紙を該記録紙の未定着トナー像が転写され
た第１面を加熱ローラ側に向けた状態で前記定着部に進
入させ、前記加熱ローラと加圧ローラとの間で前記記録
紙を加熱及び圧着することにより未定着トナー像を定着
させる電子写真装置において、 前記定着部の搬送路上流側に、記録紙の前記第１面の裏
側の第２面を加熱する予熱部を備えることを特徴とする
電子写真装置。A fixing unit having a heating roller and a pressure roller in contact with the heating roller, wherein the recording paper conveyed via a conveyance path is transferred to a first untransferred toner image on the recording paper. An electrophotographic apparatus for fixing the unfixed toner image by heating and pressing the recording paper between the heating roller and the pressure roller, wherein the recording medium is heated and pressed between the heating roller and the pressure roller, with the surface entering the fixing unit with the surface facing the heating roller side. An electrophotographic apparatus, comprising: a preheating unit that heats a second surface of the recording paper, which is located on the back side of the first surface, on an upstream side of a conveyance path of the fixing unit.
加熱ローラの熱を予熱部に伝える熱伝達部を備えること
を特徴とする請求項１に記載の電子写真装置。2. The electrophotographic apparatus according to claim 1, further comprising: a heat transfer unit that connects the preheating unit and a heating roller to transfer heat of the heating roller to the preheating unit.
熱ローラの回転中心軸より予熱プレート側に位置するこ
とを特徴とする請求項１又は２に記載の電子写真装置。3. The electrophotographic apparatus according to claim 1, wherein the rotation center axis of the pressure roller is located closer to the preheating plate than the rotation center axis of the heating roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18295296A JP2937868B2 (en) | 1996-07-12 | 1996-07-12 | Electrophotographic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18295296A JP2937868B2 (en) | 1996-07-12 | 1996-07-12 | Electrophotographic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1026893A true JPH1026893A (en) | 1998-01-27 |
| JP2937868B2 JP2937868B2 (en) | 1999-08-23 |
Family
ID=16127227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18295296A Expired - Fee Related JP2937868B2 (en) | 1996-07-12 | 1996-07-12 | Electrophotographic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2937868B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006215065A (en) * | 2005-02-01 | 2006-08-17 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| KR101074043B1 (en) | 2004-07-02 | 2011-10-17 | 삼성전자주식회사 | fusing apparatus of an image forming device |
| JP2015011043A (en) * | 2013-06-26 | 2015-01-19 | カシオ電子工業株式会社 | Fixing apparatus |
-
1996
- 1996-07-12 JP JP18295296A patent/JP2937868B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101074043B1 (en) | 2004-07-02 | 2011-10-17 | 삼성전자주식회사 | fusing apparatus of an image forming device |
| JP2006215065A (en) * | 2005-02-01 | 2006-08-17 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| JP2015011043A (en) * | 2013-06-26 | 2015-01-19 | カシオ電子工業株式会社 | Fixing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2937868B2 (en) | 1999-08-23 |
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