JP3172806B2 - The fixing device of the printer - Google Patents

The fixing device of the printer

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Publication number
JP3172806B2
JP3172806B2 JP18625392A JP18625392A JP3172806B2 JP 3172806 B2 JP3172806 B2 JP 3172806B2 JP 18625392 A JP18625392 A JP 18625392A JP 18625392 A JP18625392 A JP 18625392A JP 3172806 B2 JP3172806 B2 JP 3172806B2
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lower frame
support unit
printer
fixing
mechanism
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JP18625392A
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JPH064001A (en
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昭彦 寺沢
章 高野
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長野日本無線株式会社
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Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は記録紙を挟む一対の定着ローラを備える電子写真方式を用いたプリンタの定着装置に関する。 The present invention relates to a fixing device of a printer using an electrophotographic system comprising a pair of fixing rollers sandwiching the recording paper.

【0002】 [0002]

【従来の技術】一般に、電子写真方式を用いるプリンタでは、メインチャージャにより帯電された感光ドラムに、LEDヘッドにより画像情報の書き込み(露光)が行われ、静電潜像が形成される。 In general, a printer using an electrophotographic method, a photosensitive drum charged by the main charger, the writing of the image information (exposure) is performed by the LED head, an electrostatic latent image is formed. また、静電潜像にはデベロッパーからトナーが付与され、トナーの付着により可視像が形成される。 Further, the electrostatic latent image toner is applied from the developer, the visible image is formed by the adhesion of the toner. そして、転写チャージャにより感光ドラムから記録紙にトナーが転写されるとともに、記録紙上のトナーは記録紙を挟む一対の定着ローラ(ヒートローラ)を有する定着装置により定着される。 Then, the toner is transferred onto the recording sheet from the photosensitive drum by a transfer charger, the toner on the recording paper is fixed by the fixing device having a pair of fixing rollers sandwiching the recording paper (heat roller).

【0003】ところで、定着装置は記録紙を挟む定着ローラを備えることから、紙詰まりが発生した場合には、 Meanwhile, the fixing device from further comprising a fixing roller sandwiching the recording paper, when the paper jam occurs,
詰まった記録紙を取り除くために、定着ローラの一方を他方から離間する必要があるとともに、ランプ切れ等の故障や摩耗等による寿命が生じた場合には、定着ローラを交換する必要があり、通常、定着装置はこのような要請を満たす構造を備えている。 To remove the jammed recording sheet, while with it is necessary to separate from the other of the fixing roller, when the lifetime has occurred due to a failure or wear of lamp-out or the like, it is necessary to replace the fixing roller, usually the fixing device has a structure that satisfies this demand.

【0004】図5は従来の定着装置40を示す。 [0004] Figure 5 shows a conventional fixing device 40. 42はプリンタ本体41の下フレームであり、下フレーム42 42 is a lower frame of the printer main body 41, the lower frame 42
の後上端にはヒンジ部43を介して上フレーム44が開閉可能に取付けられる。 The upper end after the upper frame 44 mounted openably via the hinge portion 43. また、一対の定着ローラ45、 The pair of fixing rollers 45,
46を備え、一方の定着ローラ45は下フレーム42により支持されるとともに、他方の定着ローラ46は支持ユニット47により支持される。 With 46, with one of the fixing roller 45 is supported by the lower frame 42, the other of the fixing roller 46 is supported by the supporting unit 47. 支持ユニット47は一端が支軸部48を介して下フレーム42に回動自在に取付けられるともに、他端は固定ネジ49を介して下フレーム42に固定される。 Support unit 47 together is attached rotatably to the lower frame 42 via the end support shaft 48, the other end is fixed to the lower frame 42 via a fixing screw 49. これにより、下側に定着ローラ45が位置し、かつ上側に定着ローラ46が位置する定着装置40が構成される。 Thus, the position fixing roller 45 on the lower side, and the fixing device 40 is configured to fixing roller 46 on the upper side is positioned. なお、図中、Loは記録紙、 In the figure, Lo is the recording paper,
Moは定着ローラ45の変位機構を示す。 Mo shows the displacement mechanism of the fixing roller 45.

【0005】よって、紙詰まり時には固定ネジ49を緩めて下フレーム42から外せば、支持ユニット47を支軸部48を支点として上方へ回動変位させることができるため、走行路が解放され、詰まった記録紙Loを取り除くことができる。 [0005] Thus, by removing from the lower frame 42 by loosening the fixing screw 49 at the time of paper jam, since the supporting unit 47 can be rotationally displaced upward the support shaft 48 as a fulcrum, the traveling path is released, clogged it is possible to remove the recording sheet Lo. また、定着ローラ46の交換時には以上の操作に加えて、支軸部48を解体して支持ユニット47を取り外すことができる。 Further, at the time of exchange of the fixing roller 46 in addition to the above operations, by disassembling the support shaft portion 48 can be detached support unit 47.

【0006】 [0006]

【発明が解決しようとする課題】しかし、上述した従来の定着装置40は次のような問題点があった。 [0006] However, the conventional fixing device 40 described above has the following problems.

【0007】第一に、紙詰まり処理や定着ローラの交換毎に、固定ネジ49の回し操作や支軸部48の解体又は組立を必要とするため、作業が煩雑化し、ワンタッチ交換ができない。 [0007] First, for each replacement of the paper jam processing or the fixing roller, because it requires disassembly or assembly of the turning operation and the support shaft portion 48 of the fixing screw 49, the work is complicated, can not be one-touch exchange.

【0008】第二に、各定着ローラ45と46間の相対的な位置精度が低く、安定した記録紙走行及び定着処理を実現しにくい。 [0008] Second, low relative positional accuracy between the respective fixing roller 45 and 46, it is difficult to realize stable recording paper traveling and fixing.

【0009】本発明はこのような従来の技術に存在する課題を解決したものであり、紙詰まり処理や定着ローラの交換をワンタッチで容易に行うことができるとともに、定着ローラの位置精度を飛躍的に高め、安定した記録紙走行及び定着処理を実現できるプリンタの定着装置の提供を目的とする。 [0009] The present invention has solved the problems existing in the conventional art, with the replacement of the paper jam processing and the fixing roller can be easily performed with one touch, remarkably the positional accuracy of the fixing roller to increase, and an object thereof is to provide a fixing device of a printer capable of realizing stable recording paper traveling and fixing.

【0010】 [0010]

【課題を解決するための手段】本発明はヒンジ部2を介して開閉可能に結合した下フレーム3と上フレーム4を有するプリンタ本体5を備え、記録紙Lを挟む一対の定着ローラ6、7における一方の定着ローラ6を一方のフレーム3により支持し、他方の定着ローラ7をプリンタ本体5とは別体の支持ユニット8により支持してなる電子写真方式を用いたプリンタの定着装置1を構成するに際して、特に、下フレーム3と支持ユニット8間に、支持ユニット8の端部が下フレーム3に回動可能に係合する係合機構部9及び下フレーム3と支持ユニット8間の位置決めを行う嵌合機構部10を設け、係合機構部9 The present invention SUMMARY OF] includes a printer main body 5 having a lower frame 3 and the upper frame 4 which is openably attached through a hinge portion 2, fixing a pair of sandwiching the recording paper L rollers 6 one of the fixing roller 6 is supported by one of the frame 3, the fixing device 1 of the printer using an electrophotographic method comprising supporting the support unit 8 separate from the printer main body 5 and the other of the fixing roller 7 constituting the in that, in particular, between the lower frame 3 supporting unit 8, the ends of the support unit 8 is the engagement mechanism portion 9 and the lower frame 3 that engages rotatably to the lower frame 3 positioned between the support units 8 the fitting mechanism 10 for providing an engagement mechanism 9
を、下フレーム3に設けた係合軸部12及びこの係合軸部12に係合する支持ユニット8に横U形に切欠いて形成した係合凹部13により構成するとともに、嵌合機構部10を、下フレーム3に円弧状に窪ませて形成した嵌合形状部14及びこの嵌合形状部14に嵌合する支持ユニット8に備えるベアリング15により構成し、さらに、上フレーム4と支持ユニット8間に、フレームの閉時に支持ユニット8を下フレーム3側に加圧する加圧機構部11を設けてなることを特徴とする。 And with constituting the engagement recess 13 formed by notching the lateral U-shaped in the support unit 8 to be engaged with the engaging shaft portion 12 and the engaging shaft portion 12 provided on the lower frame 3, the fitting mechanism 10 and constituted by a bearing 15 provided in the supporting unit 8 to be fitted to the fit-shape portion 14 and the fitting shape portion 14 is formed by depressing arcuately lower frame 3, further supporting the upper frame 4 unit 8 during, characterized by comprising providing a pressurizing mechanism 11 for pressurizing closed to pressurize the supporting unit 8 in the lower frame 3 side of the frame.

【0011】この場合、加圧機構部11は、上フレーム4に設けた弾性支持される加圧部16と、この加圧部1 [0011] In this case, the pressure mechanism 11 includes a pressing portion 16 which is elastically supported is provided in the upper frame 4, the pressing portion 1
6が押圧可能な支持ユニット8に設けた被加圧部17により構成できる。 6 can be constituted by pressurized portions 17 provided on the depressable support unit 8.

【0012】 [0012]

【作用】本発明に係るプリンタの定着装置1によれば、 According to the fixing device 1 of the printer according to the present invention,
プリンタ本体5は下フレーム3と上フレーム4を備え、 Printer body 5 is provided with a lower frame 3 and the upper frame 4,
上フレーム4は下フレーム3に対してヒンジ部2を回動支点として開閉する。 Upper frame 4 for opening and closing the hinge portion 2 as a rotation fulcrum with respect to the lower frame 3.

【0013】一方、定着装置1は下側の定着ローラ6と上側の定着ローラ7を備え、下側の定着ローラ6は下フレーム3に支持されるとともに、上側の定着ローラ7はベアリング15を有する支持ユニット8により支持される。 Meanwhile, the fixing apparatus 1 is provided with a fixing roller 6 and the upper fixing roller 7 of the lower, together with the fixing roller 6 of the lower will be supported by the lower frame 3, the upper fixing roller 7 has a bearing 15 It is supported by the support unit 8. この場合、支持ユニット8はプリンタ本体5とは別体に構成されるため、プリンタ本体5に対して着脱できる。 In this case, the support unit 8 because the printer body 5 is configured separately, detachable from the printer main body 5.

【0014】これにより、支持ユニット8をプリンタ本体5に装着する場合には、上フレーム4を開き、支持ユニット8の係合凹部13を係合軸部12に係合させるとともに、支持ユニット8に設けたベアリング15の外周部を下フレーム3の嵌合形状部14に嵌合させ、この後、上フレーム4を閉じれば、上フレーム4に設けた弾性支持される加圧部16が支持ユニット8の被加圧部1 [0014] Thus, when mounting the support unit 8 in the printer body 5 opens the upper frame 4, the engaging recess 13 of the support unit 8 is engaged with the engaging shaft portion 12, the support unit 8 the outer periphery of the bearing 15 provided fitted into the fitting shaped portion 14 of the lower frame 3, after this, by closing the upper frame 4, pressing 16 which is elastically supported is provided in the upper frame 4 supporting unit 8 pressurized portions of 1
7を押圧し、支持ユニット8を下フレーム3側に加圧する。 7 presses the to pressurize the supporting unit 8 in the lower frame 3 side. よって、支持ユニット8は嵌合形状部14とベアリング15の嵌合により、正確に位置決めされた状態で固定される。 Thus, the support unit 8 by fitting the fitting shaped part 14 and the bearing 15, is fixed in a state of being accurately positioned.

【0015】他方、紙詰まり処理や定着ローラの交換を行う場合には、上フレーム4を開けば、加圧部16による被加圧部17に対する加圧が解除され、加圧部15は被加圧部17から離間する。 [0015] On the other hand, when the replacement of the paper jam processing or the fixing roller, opening the upper frame 4, pressure applied to pressurized portions 17 by the pressing part 16 is released, pressing 15 to be pressurized away from the pressure section 17. これにより、支持ユニット8は係合軸部12を支点に回動変位させることができる。 Thus, the support unit 8 can be rotationally displaced to the fulcrum engaging shaft portion 12. また、支持ユニット8はそのまま取り外すこともできる。 The support unit 8 may also be removed intact. このように、ワンタッチ操作により走行路の解放或いは定着ローラ7の交換を行うことができる。 Thus, it is possible to release or exchange of the fixing roller 7 of the running path by one-touch operation.

【0016】 [0016]

【実施例】次に、本発明に係る好適な実施例を挙げ、図面に基づき詳細に説明する。 EXAMPLES Next, like the preferred embodiment of the present invention, will be described with reference to the drawings in detail.

【0017】まず、本発明を明確にするため電子写真方式を用いたラベルプリンタの全体的概略構成について、 Firstly, the overall schematic structure of a label printer using an electrophotographic system in order to clarify the present invention,
図4を参照して説明する。 It will be described with reference to FIG.

【0018】同図に示すラベルプリンタPは、プリンタ本体5を備え、このプリンタ本体5の中程には感光ドラムDを配する。 The label printer P shown in the figure, includes a printer main body 5, the middle of the printer body 5 to distribution of the photosensitive drum D. 一方、不図示の供給リールから繰り出される連続する記録紙Lは、紙ガイド51、一対の駆動ローラと被動ローラからなる複数のローラ機構52…、複数のガイドプレート53…等によって形成される走行路Fを通って不図示の巻取リールに巻き取られる。 On the other hand, the recording paper L consecutive fed from the supply reel, not shown, the paper guide 51, a plurality of roller mechanism comprising a pair of drive roller and the driven roller 52 ..., the travel path formed by a plurality of guide plates 53 ..., etc. through F is taken up by the take-up reel (not shown). そして、記録紙Lは感光ドラムDの外周面に接する。 Then, the recording sheet L is in contact with the peripheral surface of the photosensitive drum D.

【0019】一方、感光ドラムDの周囲には対向して、 Meanwhile, to face the periphery of the photosensitive drum D,
クリーナ(トナー回収器)54、感光ドラムDの電荷を消去するイレーサ55、感光ドラムDに電荷を付与するメインチャージャ56、記録する画像情報を感光ドラムDに書き込む(露光)ことにより静電潜像を形成するL Cleaner (toner collector) 54, eraser 55 for erasing the charge of the photosensitive drum D, a main charger 56 for imparting electric charge to the photosensitive drum D, and writes the image information to be recorded on the photosensitive drum D (exposure) electrostatic latent image by to form an L
EDヘッド57、感光ドラムDの静電潜像にトナーを付着させて可視像を形成するデベロッパー58、トナーを記録紙Lに転写させる転写チャージャ59を順次配設する。 ED head 57, developers 58 by adhering toner to the electrostatic latent image on the photosensitive drum D to form a visible image, sequentially arranged a transfer charger 59 for transferring the toner to the recording paper L. なお、転写チャージャ59は変位機構60に支持され、感光ドラムDに対して進退変位し、これに伴って記録紙Lは感光ドラムDに接触又は離間する。 The transfer charger 59 is supported in the displacement mechanism 60, forward and backward displacement with respect to the photosensitive drum D, the recording paper L along with this is in contact with or separated from the photosensitive drum D. また、走行路Fには本発明に係る定着装置1を配設する。 Moreover, the running path F to dispose the fixing device 1 according to the present invention. 定着装置1は記録紙Lに付着したトナーを定着させる機能を有し、ヒートローラを用いた一対の定着ローラ6、7を備える。 The fixing device 1 has a function of fixing the toner adhering to the recording paper L, a pair of fixing rollers 6 and 7 using a heat roller.

【0020】次に、定着装置1の構成について、図1〜 [0020] Next, the configuration of the fixing device 1, FIG. 1
図3を参照してさらに具体的に説明する。 More specifically described with reference to FIG.

【0021】図1において、5は前記プリンタ本体であり、下フレーム3と上フレーム4を備えるとともに、上フレーム4の後下端は下フレーム3の後上端にヒンジ部2を介して開閉可能に取付けられる。 [0021] In FIG. 1, 5 is the printer main body, mounting provided with a lower frame 3 and the upper frame 4, the lower end after the upper frame 4 is to be opened and closed through a hinge portion 2 on the upper end after the lower frame 3 It is.

【0022】また、6は下側の定着ローラであり、この定着ローラ6は下フレーム3に支持される。 Further, 6 is a fixing roller of the lower, the fixing roller 6 is supported by the lower frame 3. この場合、 in this case,
下フレーム3には変位機構21を備え、定着ローラ6は変位機構21により変位可能に支持される。 The lower frame 3 comprises a displacement mechanism 21, the fixing roller 6 is displaceably supported by the displacement mechanism 21. 即ち、変位機構21は回動軸22により後端が回動自在に支持されるベースプレート23と、このベースプレート23の前端に係合する偏心カム24を備え、定着ローラ6はベースプレート23の中間部に支持される。 That is, the displacement mechanism 21 is a base plate 23 which the rear end by the pivot shaft 22 is rotatably supported, with the eccentric cam 24 that engages the front end of the base plate 23, the fixing roller 6 in the intermediate portion of the base plate 23 It is supported. これにより、定着ローラ6(ベースプレート23)は偏心カム24の回転角度に応じてセット位置又はリリース位置に変位する。 Thus, the fixing roller 6 (base plate 23) is displaced in the set position or the release position in accordance with the rotation angle of the eccentric cam 24. なお、偏心カム24はベースプレート23に対してスプリングを介して係合するため、定着ローラ6は加圧ローラとして機能し、後述する上側の定着ローラ7を加圧する方向に付勢される。 Incidentally, the eccentric cam 24 for engaging via a spring against the base plate 23, the fixing roller 6 functions as a pressure roller is urged in a direction to pressurize the upper fixing roller 7 to be described later. このような変位機構21は下フレーム3の左右両側に一対設けられ、定着ローラ6の両端が支持される。 Such displacement mechanism 21 is provided in a pair on the left and right sides of the lower frame 3, both ends of the fixing roller 6 is supported. この場合、偏心カム24は左右いずれか一方に設けるのみでもよい。 In this case, the eccentric cam 24 may be provided only on either one side.

【0023】さらにまた、下フレーム3には係合軸部1 [0023] In addition, the engaging shaft unit 1 to the lower frame 3
2を設け、また、嵌合形状部14を形成する。 2 is provided, also form fitting shape portion 14. この嵌合形状部14は下フレーム3の上端辺に下方へ円弧状に窪ませて形成する(図2参照)。 The fitting shaped portion 14 is formed by depressing arcuately downwardly to the upper end side of the lower frame 3 (see FIG. 2).

【0024】一方、8はプリンタ本体5とは別体に構成した支持ユニットである。 On the other hand, 8 the printer body 5 is a support unit which is configured separately. 支持ユニット8はベアリング15と、このベアリング15を支持する支持プレート2 And the support unit 8 bearing 15, the support plate 2 for supporting the bearing 15
6を備え、上側の定着ローラ7はベアリング15により回動自在に支持される。 Includes a 6, upper fixing roller 7 is rotatably supported by a bearing 15. この場合、ベアリング15と嵌合形状部14は嵌合機構部10を構成し、ベアリング1 In this case, the bearing 15 and the fitting shape portion 14 constitutes a fitting mechanism 10, the bearing 1
5の外周部は嵌合形状部14に嵌合する。 The outer peripheral portion of the 5 fits into the fitting-shaped portion 14. なお、ベアリング15は図3に示すように、外周部に大径のフランジ部27を一体に有し、このフランジ部27は下フレーム3の側面に係合する。 Incidentally, the bearing 15, as shown in FIG. 3, has a large-diameter flange portion 27 integrally with the outer peripheral portion, the flange portion 27 engages the side surface of the lower frame 3. また、支持プレート26の後端には横U形に切欠いた係合凹部13を形成する。 Further, the rear end of the support plate 26 to form an engagement recess 13 which notched laterally U-shaped. 係合軸部12と係合凹部13は係合機構部9を構成し、係合凹部13は係合軸部12に係合可能となる。 The engagement pin 12 and the engaging recesses 13 constitute an engagement mechanism portion 9, the engaging recess 13 is engageable with the engaging shaft portion 12. さらにまた、支持プレート26の前端には水平に折曲形成した被加圧部17を一体に設ける。 Furthermore, the front end of the support plate 26 provided with a pressurized portions 17 formed horizontally folded together.

【0025】他方、上フレーム4には加圧部16を設ける。 [0025] On the other hand, the upper frame 4 provided pressing 16. 加圧部16は押子31を有し、この押子31はスプリング30により下方に付勢される。 Pressurizing 16 has a pushing element 31, the push rod 31 is biased downwardly by a spring 30. この場合、加圧部16と被加圧部17は加圧機構部11を構成し、加圧部16は被加圧部17を押圧(加圧)可能となる。 In this case, pressing 16 and pressurized portions 17 constitutes a pressurizing mechanism 11, pressing 16 is allowed presses the pressure portion 17 (pressure). したがって、スプリング30による定着ローラ7の下方への付勢力Fuと前記スプリング24sによる定着ローラ6の上方への付勢力Fdの関係はFu>Fdとなるように設定する。 Therefore, the relationship between the biasing force Fd upward fixing roller 6 by the spring 24s and the urging force Fu downward of the fixing roller 7 by the spring 30 is set so that Fu> Fd.

【0026】なお、支持ユニット8、係合機構部9、嵌合機構部10及び加圧機構部11は、いずれも、左右両側に対称となるように一対配設される。 [0026] The support unit 8, the engagement mechanism portion 9, the fitting mechanism 10 and the pressure mechanism 11 are both are a pair arranged so as to be symmetrical on both right and left sides.

【0027】次に、定着装置1の機能について、図1〜 Next, the function of the fixing device 1, FIG. 1
図3を参照して説明する。 It will be described with reference to FIG.

【0028】まず、プリンタ本体5において、上フレーム4はヒンジ部2を支点に回動するため、下フレーム3 Firstly, in the printer body 5, since the upper frame 4 to pivot the hinge portion 2 as a fulcrum, the lower frame 3
に対して開閉できる。 It can be opened and closed with respect.

【0029】したがって、支持ユニット8をプリンタ本体5に装着する場合には、上フレーム4を開き、支持ユニット8の係合凹部13を係合軸部12に係合させるとともに、支持ユニット8のベアリング15の外周部を下フレーム3に設けた凹状の嵌合形状部14に嵌合させる。 [0029] Therefore, when mounting the support unit 8 in the printer body 5 opens the upper frame 4, the engaging recess 13 of the support unit 8 is engaged with the engaging shaft portion 12, the bearing supporting units 8 It is fitted the outer peripheral portion 15 in a concave fitting shaped portion 14 provided on the lower frame 3. そして、上フレーム4を閉じれば、上フレーム4に設けた弾性支持される加圧部16は、支持ユニット8に設けた被加圧部17を押圧する。 Then, by closing the upper frame 4, pressing 16 which is elastically supported it is provided in the upper frame 4, to press the pressurized portions 17 provided on the support unit 8. この結果、ベアリング15は嵌合形状部14に圧接し、かつ嵌合するため、支持ユニット8は下フレーム3に対して正確に位置決めされた状態で固定される。 As a result, the bearing 15 is pressed against the fitting shape portion 14, and for fitting, the supporting unit 8 is fixed in a state of being accurately positioned relative to the lower frame 3. この場合、定着ローラ7の軸部を支持するベアリング15が直接位置決めされるため、 In this case, the bearing 15 supporting the shaft portion of the fixing roller 7 is positioned directly,
下フレーム3の位置精度を確保すれば、各定着ローラ6、7の高い位置決め精度が確保される。 If you secure the positional accuracy of the lower frame 3, a high positioning accuracy of each fixing rollers 6 and 7 is ensured.

【0030】よって、記録時には定着ローラ6と7間に記録紙Lが挟まれ、記録紙L上のトナーは加熱圧着により定着処理される。 [0030] Therefore, at the time of recording the recording paper L between the fixing roller 6 and 7 are sandwiched, the toner on the recording paper L is fixed by heat and pressure.

【0031】他方、紙詰まり処理や定着ローラの交換を行う場合には、上フレーム4を開けば、加圧部16による被加圧部17に対する加圧が解除され、かつ加圧部1 [0031] On the other hand, when the replacement of the paper jam processing or the fixing roller, opening the upper frame 4, pressure applied to pressurized portions 17 by the pressing part 16 is released, and pressing 1
6は支持ユニット8から離間する。 6 is separated from the support unit 8. したがって、支持ユニット8はそのまま係合軸部12を支点として上方へ回動変位でき、ワンタッチ操作で走行路Lを解放できる。 Accordingly, the support unit 8 as it is able to rotationally displaced upward the engaging shaft portion 12 as a fulcrum, can release the travel path L by one-touch operation.
また、定着ローラ7を交換する場合には、そのまま取り外すことができる。 Also, when replacing the fixing roller 7, it can be removed intact.

【0032】以上、実施例について詳細に説明したが、 The invention has been described in detail for Example,
本発明はこのような実施例に限定されるものではなく、 The present invention is not limited to such an embodiment,
支持ユニット、加圧機構部等の構成、形状等において、 Support unit, the configuration of such pressure mechanism, the shape and the like,
本発明の要旨を逸脱しない範囲で任意に変更できる。 It can be arbitrarily changed without departing from the gist of the present invention.

【0033】 [0033]

【発明の効果】このように、本発明は、一方の定着ローラを下フレームにより支持し、他方の定着ローラをプリンタ本体とは別体の支持ユニットにより支持してなる電子写真方式を用いたプリンタの定着装置において、下フレームと支持ユニット間に、支持ユニットの端部が下フレームに回動可能に係合する係合機構部及び下フレームと支持ユニット間の位置決めを行う嵌合機構部を設け、 [Effect of the Invention] Thus, the present invention, one of the fixing roller is supported by the lower frame, using an electrophotographic system in which the other of the fixing roller becomes supported by the support unit separate from the printer body printer in the fixing device, between a lower frame support unit, the engagement mechanism for positioning between the engaging mechanism and the lower frame support unit end of the support unit is engaged rotatably to the lower frame is provided for ,
係合機構部を、下フレームに設けた係合軸部及びこの係合軸部に係合する支持ユニットに横U形に切欠いて形成した係合凹部により構成するとともに、嵌合機構部を、 The engagement mechanism, thereby constituting the engagement recess formed by notching the lateral U-shaped in the support unit associated with the engaging shaft portion and the engaging shaft portion provided on the lower frame, the fitting mechanism part,
下フレームに円弧状に窪ませて形成した嵌合形状部及びこの嵌合形状部に嵌合する支持ユニットに備えるベアリングにより構成し、さらに、上フレームと支持ユニット間に、フレームの閉時に支持ユニットを下フレーム側に加圧する加圧機構部を設けてなるため、次のような顕著な効果を奏する。 Constituted by a bearing provided on the support unit to be fitted into the fitting-shaped portion and the fitting shape portion formed by depressing arcuately lower frame, and further, between the upper frame support unit, the support unit closed frame to become provided a pressurized mechanism for pressing the lower frame side, a marked effect as follows.

【0034】 紙詰まり処理や定着ローラの交換作業を、ワンタッチ操作により極めて容易に行うことができる。 [0034] The replacement of the paper jam processing and the fixing roller can be performed extremely easily by one-touch operation.

【0035】 定着ローラを支持する支持ユニット(特にベアリング)に嵌合して位置決めするため、定着ローラの位置精度を飛躍的に高めることができ、安定した記録紙走行及び定着処理を実現できる。 The support unit for supporting the fixing roller (in particular bearing) for positioning fitted to, the positional accuracy of the fixing roller can be greatly increased, it is possible to realize a stable recording paper traveling and fixing.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明に係る定着装置における定着ローラの装着状態を示す側面図、 Figure 1 is a side view showing a mounting state of the fixing roller in the fixing device according to the present invention,

【図2】同定着装置における定着ローラを取り外す状態を示す側面図、 Figure 2 is a side view showing a state of removing the fixing roller in the fixing device,

【図3】同定着装置の一部平面図、 [Figure 3] partial plan view of the fixing device,

【図4】同定着装置を備えるラベルプリンタの概略構成図、 Figure 4 is a schematic block diagram of a label printer equipped with the fixing device,

【図5】従来の技術に係る定着装置の側面図、 Figure 5 is a side view of a fixing device according to the prior art,

【符号の説明】 DESCRIPTION OF SYMBOLS

1 定着装置 2 ヒンジ部 3 一方のフレーム(下フレーム) 4 他方のフレーム(上フレーム) 5 プリンタ本体 6 定着ローラ 7 定着ローラ 8 支持ユニット 9 係合機構部 10 嵌合機構部 11 加圧機構部 12 係合軸部 13 係合凹部 14 嵌合形状部 15 ベアリング 16 加圧部 17 被加圧部 L 記録紙 1 fixing device 2 hinge portion 3 one frame (the lower frame) 4 other frame (the upper frame) 5 printer 6 fixing roller 7 fixing roller 8 supporting unit 9 engaging mechanism 10 engaging mechanism 11 the pressure mechanism 12 engaging shaft portion 13 engages the recess 14 fitting shaped part 15 bearing 16 pressing 17 pressurized portions L paper

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl. 7 ,DB名) G03G 13/20 G03G 15/00 550 G03G 15/20 G03G 21/16 - 21/18 ────────────────────────────────────────────────── ─── of the front page continued (58) investigated the field (Int.Cl. 7, DB name) G03G 13/20 G03G 15/00 550 G03G 15/20 G03G 21/16 - 21/18

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 ヒンジ部を介して開閉可能に結合した下フレームと上フレームを有するプリンタ本体を備え、記録紙を挟む一対の定着ローラにおける一方の定着ローラを下フレームにより支持し、他方の定着ローラをプリンタ本体とは別体の支持ユニットにより支持してなる電子写真方式を用いたプリンタの定着装置において、下フレームと支持ユニット間に、支持ユニットの端部が下フレームに回動可能に係合する係合機構部及び下フレームと支持ユニット間の位置決めを行う嵌合機構部を設け、前記係合機構部を、下フレームに設けた係合軸部及びこの係合軸部に係合する支持ユニットに横U形に切欠いて形成した係合凹部により構成するとともに、前記嵌合機構部を、下フレームに円弧状に窪ませて形成した嵌合形状部及びこの嵌合形状 1. A includes a printer body having a lower frame and an upper frame openably coupled via a hinge portion, one of the fixing roller in the pair of fixing rollers sandwiching the recording paper is supported by the lower frame, the other fixing in the fixing apparatus of a printer using an electrophotographic system comprising supported by separate supporting unit and a roller printer, between the lower frame support unit, rotatably on end lower frame supporting unit engaging the fitting mechanism for positioning between the engaging mechanism and the lower frame and the support unit for engagement provided, the engagement mechanism engages the engaging shaft portion and the engaging shaft portion provided on the lower frame together constituting the engagement recess formed by notching the lateral U-shaped in the support unit, the fitting mechanism, the fitting shape portion and the fitting shape formed by depressing the arcuate lower frame 部に嵌合する支持ユニットに備えるベアリングにより構成し、さらに、上フレームと支持ユニット間に、フレームの閉時に支持ユニットを下フレーム側に加圧する加圧機構部を設けてなることを特徴とするプリンタの定着装置。 Parts constituted by a bearing provided on the support unit to be fitted in, further between the upper frame support unit, characterized by comprising providing a closed pressurized mechanism for pressurizing the support unit to the lower frame of the frame the fixing device of the printer.
  2. 【請求項2】 加圧機構部は上フレームに設けた弾性支持される加圧部と、この加圧部が押圧可能な支持ユニットに設けた被加圧部により構成することを特徴とする請求項1記載のプリンタの定着装置。 2. A pressing mechanism includes a pressing which is elastically supported is provided in the upper frame, the pressing portion is characterized in that it constitutes a pressurized portions provided on the pressable supporting unit according the fixing device of claim 1, wherein the printer.
JP18625392A 1992-06-19 1992-06-19 The fixing device of the printer Expired - Fee Related JP3172806B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP18625392A JP3172806B2 (en) 1992-06-19 1992-06-19 The fixing device of the printer

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JPH064001A JPH064001A (en) 1994-01-14
JP3172806B2 true JP3172806B2 (en) 2001-06-04

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