576953 A7 B7 五、發明說明（f ) (發明所屬之技術領域） 本發明係關於影印機或印刷機等的圖像形成裝置，尤 其是’關於對並聯配置多數像載體的所謂串聯型式樣有 效地改良圖像形成裝置。 (先前技術） 對於先前的串聯型圖像形成裝置而言，例如以並聯配 設黃、紫紅、青綠、黑色等多數圖像形成單元（例如採 用電子照相方式），在面對於各圖像形成單元的部位，配 設跨置於多數架設滾輪以循環搬運搬運皮帶的皮帶搬運 裝置，在搬運皮帶上藉由直接或紀錄材（用低或OHP板） 於各圖像形成單元形成的多數色色劑像依序多重複製者 已被•知曉（例如參照特開平6- 1 1 0290號公報）。 在這種串聯型圖像形成裝置，於所謂高速化之點確實 有利，但反面，需要將各圖像形成單元所形成各色成份 圖像，依序重疊複製於搬運皮帶之同樣圖像載置位置或 同樣紀錄材上，因此不出現各色圖形成部間的平行度時 產生各色成份圖像的顏色偏差，有所謂難予配準各色成 份圖像的技術課題。 爲解決如此技術課題，在先前的串聯型圖像形成裝 置，以每一各色成份圖像紀錄用的紀錄裝置設置組裝有 構成要素（潛像載體，帶電充電器，曝光裝置，顯像裝 置，複製裝置）的支撐裝置，將該支撐裝置分別對於本 體框架由兩支基準銷來樞支，同時在一方的基準銷裝安 裝於支撐裝置的記錄裝置，設置互相得以接近離開方向 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項坪填寫本頁) rl裝 訂· 經濟部智慧財產局員工消費合作社印製 576953 A7 B7 五、發明說明（2) 可調整的位置調整裝置，用來防止產生圖像偏差，以使 謀求各紀錄裝置維持組裝性的技術（例如參照特開昭 64 -842 63號公報），或者，設置在各像載體、潛像形成裝 置及複製裝置之至少支承一個裝置之軸方向一端部，附 設多數支撐裝置的第1支撐板，與支撐上述裝置之軸方 向另一端部附設多數支撐裝置的第2支撐板，使此等第 1、第2支撐板互相以離開的狀態固定於倂設的本體框 架，可極容易而且確實地獲得各圖像形成裝置的構成構 件互相間的平行度，組裝性良好，而且可以無顏色偏差 的良好圖像形成的技術（例如參照特開平6-3 3 2270號公 報）既已被提案。 (發明欲解決之課題） 然而，在前者的先行技術（例如特開昭64-84263號公 報）’當對本體框架組裝各紀錄裝置時需要伴隨由位置調 整裝置的位置調整作業，因此困難於配合各紀錄裝置之 互相構成要素的平行度，而且不僅是非常花費時間，對 於需要更換潛像載置體的零件，在更換時也要作每次調 整不能作爲 CRU( Customer Replaceable Unit 的簡寫）構 成，有所謂造成成本非常高的技術課題。 又’在後者的先行技術（例如特開平6-3 3 2270號公 報）’雖不需要如前者之先行技術的位置調整過程，但由 於按照每一各圖像形成裝置具有支撐板，介於各圖像形 成裝置相對位置關係間的構件多，由各支撐板間的累計 誤差不能取得各圖像形成裝置間的調整，如欲抑制產生 -4- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ——.-----------裝—— (請先閱讀背面之注意事項寫本頁) 訂- --線- 經濟部智慧財產局員工消費合作社印製 576953 A7 _____ B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（3 ) 顏色偏差乃爲未充份的構成。 本發明爲解決以上的技術課題所實施，係提供以簡單 的構成可提高對於本體框架的圖像形成用的輔助單元的 定位精度之圖像形成裝置者。 尤其是’本發明係提供以串聯型圖像形成裝置爲對象 時’即使圖像形成用的輔助單元爲使用者可更換的CRU 構成’亦以簡單結構成確實地抑制產生顏色偏差的圖像 形成裝置。 (欲解決課題之手段） 亦即，本發明係如第1圖所示，在圖像形成用的輔助 單元2定位裝設於本體框架1的圖像形成裝置，其特徵 爲在本體框架1，係該輔助單元2以一體形成定位支撐的 定位部3的圖像形成裝置。 於如此地技術手段，所謂「·本體框架1」，只要是使輔 助單元2形成定位支撐用之基準框架即可，通常以焊接 複數之板金構件其他手段固定來構成。 又，所謂「輔助單元2」，係廣泛包括像載置單元2( 1 )， 複製單元2(2)，潛像形成單元2(3)，防蝕膜單元（未圖 示），固定單元（未圖示），感測器單元（未圖示）等的 圖像形成用輔助單元。 再者，所謂「定位部3」，只要是輔助單元2可被定位 支撐者，以定位孔，定位突起，定位槽，定位面等適當 樣態也無妨。但，在對應此定位部3的輔助單元2需要 具備擊合該定位部3的被定位部，但作爲此被定位部， (請先閱讀背面之注意事項寫本頁) 裝 --線· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 __ B7 五、發明說明（γ) 亦可對輔助單元2的定位用作爲單獨地設置，作爲輔助 單元2的一部份（例如作爲像載置單元2( 1)具備有鼓輪 狀之像載置體的樣態，可列舉像載置體的端部外徑部或 旋轉保持該外徑部的軸承構件等）照原樣利用也可以。 尙，第1圖中，雖3(1)表示像載置單元2(1)的定位部， 3(2)係複製.單元2(2)的定位部，3(3)係潛像形成單成2(3) 的定位部，3(4)係圖示以外的保護滾輪單元的定位部，3(5) 表示圖示以外的固定單元的定位部，但這些都是例示， 並不是必需裝設這些全部者。 更又，作爲「一體形成定位部3」，係提高定位精度之 意，意思在於將安裝另體的定位構件的構造予除外。 尤其是，本發明所謂串聯型的圖像形成裝置有效，此 時，在本體框架1由含像載量體的像載置元件2(1)所成 輔助單元2裝設多數定位的圖像形成裝置，對本體框架 1，係由多數像載置單元2(1)所成輔助單元2以定位被支 撐的多數定位部3 (具體是3 (1)) —體形成即可。 又，由像載置體2(1)所成輔助單元2的定位部3(1)雖 以適當選擇也無妨，但從所謂提高定位精度，而且，定 位作業之容易度的觀點看來，像載置單元2( 1)的定位部 3( 1 )，係具備將像載置體2a之端部外徑部或外徑部以旋 轉自如地保持的軸承構件由二點P 1 ' P2定位支撐的大致 V字狀之V字塊爲理想。 在這裡，所謂「具備V字塊」，係若具備有V字塊（區 域），亦可爲缺口槽之構成，孔構成也可之意思。又，對 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------裝--- (請先閱讀背面之注意事項寫本頁) -r ---訂· --線· 經濟部智慧財產局員工消費合作社印製 576953 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（r) 於「V字塊」的V字部份角度並不限定於銳角，直角更 以鈍面亦可以。 在此形態，構成像載置體2(1)之定位部3(1)的V字塊， 在面對驅動像載置體2a徑方向的驅動力方向的部位，以 具有一個支撐點的壁部佈置上爲理想。 再者，從所謂將像載置體2( 1 )的定位鬆動抑制於最小 限度的觀點看來，只可設置像載置體單元2(1)被推壓於V 字塊側的推壓裝置即可。 又，由將像載置體上之圖像複製於記錄媒體之複製單 元2 (2)所成，輔助單元2被定位支撐地定位部3 (具體是 3(2)) —體形成的樣態，複製單元2(2)的定位部3(2)，只 要是裝設於複製單元2(2)側而與被定位部繫合者即可。 在這裡，對於「複製單元2(2)」，不限定於中間複製皮 帶或用低搬運皮帶等的皮帶型複製單元，也包括只複製 滾輪的滾輪型複製單元。 然後，在「複製單元2(2)側的被定位部」，包括皮帶跨 架滾輪的軸承、定位突起、定位孔、定位缺口等各種樣 態。 再者，對次像載置用單元2(1)及複製單元2(2)定位構 造的理想形態而言，在本體框架1由含像載置體2a的像 載置單元2(1)及像載置體2a上之圖像，複製於記錄媒體 的複製單元2(2)所成輔助單元2，以被定位支撐定位部3 (具體是3(1)、3(2)—體形成的樣態，複製單元2(2)係從 本體框架1之定位位置構成可躲避，當複製單元2(2)躲 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項3寫本頁) 1· FI裝 訂- 576953 經濟部智慧財產局員工消費合作社印製 A7 ___B7_ 五、發明說明（L ) 避至射避位置時一方面確保從像載置單元2(1)之定位位 置的脫離空間，在複製單元2(2)被設定於定位位置時像 載置單元2(1)具備朝定位部被推壓的推壓裝置者的樣態 可列舉部推壓的推壓裝置的形態。 再者，又對本體框架1，在像載置體2a上寫入靜電潛 像的潛像形成單元2(3)所成輔助單元2被定位支撐的定 位部3 (具體是3(3)) —體形成的樣態，潛像形成單元 2(3)的定位部3(3)，只要與裝設於潛像形成單元2(3)側的 被定位部繫合者即可。 在這裡，所謂「潛像形成單元2(3)」，只要是形成靜電 潛像者，包括曝光單元，離子流寫入單元等。 又，在「潛像形成單元2(3)側的被定位部」，係包括定 位突片、定位凸起、定位孔等的各種形態。 又，若從製造法側來看本體框架1構造的理想樣態， 本體框架1構造，係至少包括互相離開倂設的兩片板金 構件，最好以重疊此兩片板金構件的狀態以使同時加工 輔助單元2的各定位部3。 再複於，從強度的觀點來看本體框架1構造的理想樣 態，本體框架1構造，係至少包括互相離開倂設且形成 輔助單元2定位部3的兩片板金構件，最好建立箱狀框 架者。 在此情形，原來就有的箱狀框架附加兩片板金構件也 可以，或以兩片板金構件構成箱狀框架的一部份也可以。 再者又，謀求本體框架1構造的簡化，本體框架1構 (請先閱讀背面之注意事項Η 裝—— π寫本頁) 訂· 線- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（7 ) 造，係在像載置體2a上兼用寫入靜電潛像的潛像形成單 元2(3)的單元框架者也可以。 [發明之實施形態] 以下，依據附圖所示實施形態詳細說明本發明： 第2圖依表示適用在本發明串聯型圖像形成裝置之實 施一形態的說明圖。在同圖，串聯型圖像形成裝置，在 本體機殻2 1內以橫方向排列四種顏色（本實施形態在 黑、黃、紫紅、青綠）的圖像形成單元22 (具體是22a〜 22d )，在其上方沿各圖像形成單元22的排列方向配設包 括循環搬運中間複製皮帶23 0的複製單元23，一方面， 在本體機殻2 1的下方配設容納用紙等紀錄材料（未圖示） 的紀錄材供給匣24，同時從記錄材供給匣24而成爲記錄 材之搬運路的記錄材搬運路25配置於垂置方向者。 在本實施形態，各圖像形成單元2 ( 22a〜22d)，係從中 間複製皮帶2 3 0的循環方向上游側，依序形成例如黑色 用、黃色用、紫紅色用、.青綠色甩（排列並不限定於此 順序）的色粉像，具備有各感光體單元3 0，和各顯象單 元33及共同的一個曝光單元40。 在這裡，感光體單元 3 0，例如以一體地予卡匣化感光 體鼓輪3 1，和預先帶電此感光體鼓輪3丨的帶電器（本例 爲帶電滾輪）3 2，和去除感光體鼓輪3 1上殘留色粉的淸 潔器34者。 又’顯像單元33，係於帶電的感光體鼓輪31由上述曝 光單元4 0所曝光形成的靜電潛像所對應色粉（在本體施 -9- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 再殖 裝576953 A7 B7 V. Description of the invention (f) (Technical field to which the invention belongs) The present invention relates to an image forming apparatus such as a photocopier or a printing press, and more particularly, to 'the so-called serial type in which a large number of image carriers are arranged in parallel. Improved image forming device. (Prior art) For the conventional tandem-type image forming apparatus, for example, a plurality of image forming units such as yellow, magenta, cyan, and black are arranged in parallel (for example, using an electrophotographic method). A belt conveying device is disposed across most of the erection rollers to cyclically convey the conveying belt. Most of the toner images formed on the conveying belt by direct or recording materials (using low or OHP boards) on each image forming unit are formed. Sequential multiple replicators have been known (see, for example, Japanese Patent Application Laid-Open No. 6-1110290). In this type of tandem image forming apparatus, it is indeed advantageous at the point of so-called high speed, but on the other hand, it is necessary to sequentially copy and copy the component image of each color formed by each image forming unit to the same image placement position on the conveying belt. Or on the same recording material, the color deviation of each color component image does not occur when the parallelism between the respective color image forming portions does not occur, and there is a technical problem that it is difficult to register the image of each color component. In order to solve such a technical problem, in the conventional tandem image forming apparatus, a recording device for recording each color component image is provided with assembling elements (latent image carrier, charged charger, exposure device, developing device, reproduction device, etc.). Device) supporting device, the supporting device is pivotally supported by two reference pins for the main body frame, and a recording device installed on the supporting device is installed on one reference pin, and is arranged to be close to and away from each other. Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back first and fill out this page) rl binding · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and the Consumer Cooperatives 576953 A7 B7 V. Description of the invention (2) Yes The adjusted position adjustment device is a technology to prevent image deviation and maintain the assemblability of each recording device (for example, refer to Japanese Patent Application Laid-Open No. 64-842 63), or it is installed on each image carrier and latent image formation The device and the copying device support at least one end of the device in the axial direction, a first support plate with a plurality of support devices is attached, and the support A second support plate of a plurality of support devices is attached to the other end of the device in the axial direction, and the first and second support plates are fixed to the main body frame in a separated state from each other. The drawings can be obtained easily and reliably. The components of the image forming apparatus have good parallelism with each other, are easy to assemble, and have good image formation technology without color deviation (for example, refer to Japanese Unexamined Patent Publication No. 6-3 3 2270). (Problems to be Solved by the Invention) However, in the former prior art (for example, Japanese Patent Application Laid-Open No. 64-84263), when assembling each recording device to the main body frame, it is necessary to accompany the position adjustment operation by the position adjustment device, so it is difficult to cooperate The parallelism of the constituent elements of each recording device is not only very time-consuming. For the parts that need to be replaced with the latent image mounting body, it must be adjusted every time during replacement. It cannot be used as a CRU (short for Customer Replaceable Unit). There are so-called technical problems that cause very high costs. Also, in the latter prior art (for example, Japanese Unexamined Patent Publication No. 6-3 3 2270), although the position adjustment process of the former prior art is not required, since each image forming apparatus has a support plate, There are many components between the relative positional relationship of the image forming device. The adjustment between the image forming devices cannot be obtained due to the accumulated error between the support plates. If you want to suppress the occurrence of -4- this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ——.----------- install—— (Please read the notes on the back to write this page first) Order --- line-Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printed 576953 A7 _____ B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (3) The color deviation is an inadequate composition. The present invention has been made to solve the above technical problems, and is to provide an image forming apparatus capable of improving the positioning accuracy of an auxiliary unit for image formation on a main body frame with a simple configuration. In particular, when the present invention is directed to a tandem-type image forming apparatus, even if the auxiliary unit for image formation is a user-replaceable CRU structure, the image formation with a simple configuration is reliably suppressed with a simple configuration. Device. (Means to Solve the Problem) That is, as shown in FIG. 1, the present invention positions the image forming apparatus mounted on the main body frame 1 in the auxiliary unit 2 for image formation. This auxiliary unit 2 is an image forming apparatus that integrally forms a positioning portion 3 for positioning support. In this technical means, the "main body frame 1" may be a reference frame for positioning and supporting the auxiliary unit 2 and is usually constructed by welding a plurality of sheet metal members by other means. The so-called "auxiliary unit 2" includes an image mounting unit 2 (1), a copy unit 2 (2), a latent image forming unit 2 (3), an anti-corrosion film unit (not shown), and a fixed unit (not shown). (Illustrated), an auxiliary unit for image formation such as a sensor unit (not shown). It should be noted that the "positioning portion 3" is not limited as long as the supporting unit 2 can be positioned and supported by positioning holes, positioning protrusions, positioning grooves, and positioning surfaces. However, the auxiliary unit 2 corresponding to this positioning portion 3 needs to be provided with a positioned portion that engages the positioning portion 3, but as this positioned portion, (please read the precautions on the back first to write this page) The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 576953 A7 __ B7 V. Description of the invention (γ) The positioning of the auxiliary unit 2 can also be set separately as a part of the auxiliary unit 2 (For example, as the image mounting unit 2 (1) is provided with a drum-shaped image mounting body, the outer diameter portion of the end portion of the image mounting body or a bearing member that rotates and holds the outer diameter portion can be cited.) It can be used as it is. Alas, in Fig. 1, although 3 (1) indicates the positioning portion of the image mounting unit 2 (1), 3 (2) is a copy. The positioning portion of the unit 2 (2), 3 (3) is a latent image forming unit 2 (3) positioning part, 3 (4) is the positioning part of the protection roller unit not shown in the figure, 3 (5) indicates the positioning part of the fixed unit not shown in the figure, but these are examples and are not required to be installed Let these be all of them. Furthermore, as "the integral positioning portion 3" is intended to improve the positioning accuracy, it means that the structure of the positioning member to which a separate body is mounted is excluded. In particular, the so-called tandem-type image forming apparatus of the present invention is effective. In this case, the main body frame 1 is formed with a plurality of positioning image forming units formed by an auxiliary unit 2 including an image bearing element 2 (1) including an image bearing body. For the device, the main body frame 1 may be formed as a single body by a plurality of positioning units 3 (specifically 3 (1)) supported by the auxiliary unit 2 formed by the plurality of image mounting units 2 (1). In addition, although the positioning portion 3 (1) of the auxiliary unit 2 formed by the image mounting body 2 (1) may be appropriately selected, from the viewpoint of improving positioning accuracy and ease of positioning work, it looks like The positioning unit 3 (1) of the mounting unit 2 (1) is provided with a bearing member that rotatably holds the outer diameter portion or the outer diameter portion of the image mounting body 2a by two-point P 1 ′ P2 positioning support A substantially V-shaped V block is ideal. Here, the term "having a V-shaped block" means that if a V-shaped block (area) is provided, it may be a notch groove structure and a hole structure. In addition, the Chinese national standard (CNS) A4 specification (210 X 297 mm) applies to this paper size. -------------- Installation --- (Please read the precautions on the back first to write this page ) -r --- Order ·-Line · Printed by the Consumers 'Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 576953 A7 B7 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (r) V in the "V block" The angle of the part of the character is not limited to an acute angle, and a right angle may be an obtuse surface. In this form, the V-shaped block constituting the positioning portion 3 (1) of the image mounting body 2 (1) has a wall having a supporting point at a portion facing the driving force direction driving the radial direction of the image mounting body 2a. The layout is ideal. Furthermore, from the viewpoint of suppressing the positioning looseness of the image mounting body 2 (1) to a minimum, only the pressing device of the image mounting body unit 2 (1) on the V block side can be provided. Just fine. In addition, it is formed by a copying unit 2 (2) for copying an image on the image carrier onto a recording medium, and the auxiliary unit 2 is supported by the positioning unit 3 (specifically 3 (2)). The positioning part 3 (2) of the copying unit 2 (2) may be any one that is installed on the copying unit 2 (2) side and is connected with the target part. Here, the "replication unit 2 (2)" is not limited to a belt-type reproduction unit such as an intermediate reproduction belt or a low-handling belt, but also includes a roller-type reproduction unit that reproduces only rollers. Then, the "positioned part on the side of the copy unit 2 (2)" includes various aspects such as the bearing, positioning protrusion, positioning hole, and positioning gap of the belt span roller. Furthermore, in an ideal form of the positioning structure of the secondary image mounting unit 2 (1) and the copying unit 2 (2), the main body frame 1 is composed of an image mounting unit 2 (1) containing an image mounting body 2a and Like the image on the mounting body 2a, the auxiliary unit 2 formed by the duplication unit 2 (2) of the recording medium is formed by supporting the positioning portion 3 (specifically 3 (1), 3 (2)). In this way, the copy unit 2 (2) is constructed from the positioning position of the ontology frame 1 and can be avoided. When the copy unit 2 (2) hides, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please Please read the notes on the back 3 and write this page) 1. FI Binding-576953 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ___B7_ V. Description of the invention (L) When avoiding to the shooting avoidance position, on the one hand, ensure that the When the copying unit 2 (2) is set to the positioning position, the separation space of the positioning position of 2 (1) is similar to that of the mounting unit 2 (1), which includes a pressing device that is pushed toward the positioning portion. The form of the pushing device that is pushed. Furthermore, a latent image forming unit 2 (3) for writing an electrostatic latent image on the image carrier 2a of the main body frame 1 The positioning part 3 (specifically 3 (3)) of the auxiliary unit 2 is positioned and supported. The positioning part 3 (3) of the latent image forming unit 2 (3) is formed as long as it is formed on the latent image. The unit to be positioned on the unit 2 (3) side is sufficient. Here, the so-called "latent image forming unit 2 (3)" is any person who forms an electrostatic latent image, and includes an exposure unit, an ion current writing unit, and the like. In addition, the "positioned portion on the side of the latent image forming unit 2 (3)" includes various forms including positioning protrusions, positioning protrusions, positioning holes, and the like. If the structure of the body frame 1 is viewed from the manufacturing method side, Ideally, the structure of the body frame 1 includes at least two sheet metal members spaced apart from each other, preferably in a state of overlapping the two sheet metal members so that the positioning portions 3 of the auxiliary unit 2 are processed at the same time. From the point of view of strength, the structure of the body frame 1 is ideal. The structure of the body frame 1 includes at least two sheet metal members spaced apart from each other and forming the positioning unit 3 of the auxiliary unit 2. It is best to build a box-shaped frame. In this case, the existing box-shaped frame has two sheet metal components. Yes, or a part of the box frame can be made of two sheet metal components. Furthermore, to simplify the structure of the body frame 1, the structure of the body frame 1 (please read the precautions on the back first. Installation-π copy (Page) Order · Line-This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 576953 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of Invention (7) It is also possible to use the unit frame of the latent image forming unit 2 (3) for writing the electrostatic latent image on the mounting body 2a. [Embodiment of the invention] Hereinafter, the present invention will be described in detail based on the embodiment shown in the drawings: FIG. 2 An explanatory view showing an embodiment of a tandem-type image forming apparatus according to the present invention. In the same figure, a tandem-type image forming apparatus arranges image forming units 22 (specifically 22a to 22d) of four colors (black, yellow, magenta, and cyan) in a horizontal direction in a main body casing 21 ), A copying unit 23 including a circular transfer intermediate copying belt 23 0 is arranged above the image forming unit 22 in the arrangement direction above it. On the one hand, a recording material (not including paper) (not including As shown in the figure, the recording material supply cassette 24 and the recording material transportation path 25 which becomes the recording material transportation path from the recording material supply cassette 24 are arranged in a vertical direction. In this embodiment, each of the image forming units 2 (22a to 22d) copies the upstream side of the belt 2 30 in the circulation direction from the middle, and sequentially forms, for example, black, yellow, magenta, and cyan-green throw ( The arrangement is not limited to this order), and the toner image includes each photoreceptor unit 30, each development unit 33, and a common exposure unit 40. Here, the photoreceptor unit 30, for example, integrally pre-cages the photoreceptor drum 3 1 and a charger (in this example, a charging roller) 3 2 which is previously charged with the photoreceptor drum 3 3 in advance, and removes light. The cleaner 34 has toner remaining on the body drum 31. The 'developing unit 33 is attached to the charged photoreceptor drum 31 corresponding to the toner corresponding to the electrostatic latent image formed by the exposure unit 40 described above (applied in the main body-9-this paper size applies Chinese National Standard (CNS) A4 size (210 X 297 mm) (Please read the notes on the back before filling this page)
-L--訂---------線L 576953 A7 B7 五、發明說明（s) 形態例如負極性）來顯像者。 (請先閱讀背面之注咅？事項3寫本頁) 尙，符號3 5 ( 3 5 a〜35d)係將各色成份色粉補給於各顯像 單元33的色粉匣。 一方面，曝光單元40，在單元箱4 1內容納例如四個半 導體雷射器（未圖示）、一個多角形鏡42、或像鏡片（未 圖示）及對應各感光體單元3 0的各個鏡（未圖示），從 每一各色成份之半導體雷射器之光線在多角形鏡42作偏 向掃描，藉由成像鏡片，鏡以對應感光體鼓輪31上的曝 光點導引光像者。 -丨線」 又，在本實施形態，複製單元23例如在一對架設滾輪 (一方面驅動滾輪）231、23 2間跨架中間複皮帶23 0者， 在對應各感光單元30之感光體鼓輪31的中間複製皮帶 23 0的背面配設一次複製器（本例爲一次複製滾輪）5 1， 由在此一次複製器5 1施加色粉的帶電極性和逆極性的電 壓，形成將感光體鼓輪3 1上之色粉像以靜電方式複製於 中間複製皮帶23 0側。 經濟部智慧財產局員工消費合作社印製 再者，在對應中間複製皮帶2 3 0最下游圖像形成單元 22d下游側的架設滾輪23 2部位，配設二次複製裝置52， 形成將中間複製皮帶23 0上的一次複製像對記錄材作二 次複製（總括複製）。 在本實施形態，二次複製裝置52，具備有壓接配置於 中間複製皮帶2 3 0之色粉像載置面側的二次複製滾輪 521，和配置於中間複製皮帶23 0的背面側成爲二次複製 滾輪5 1相對電極的背托滾輪（本例爲兼用架設滾輪23 2 )。 -10- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 經濟部智慧財產局員工消費合作社印製 A7 _B7五、發明說明（ 然後，例如接地二次複製滾輪5 2 1，又，在背托滾輪（架 設滾輪23 2 )施加有色粉的帶電極性和同極性的偏流。 再又，在中間複製皮帶23 0的最上游圖像形成單元22a 爲上游側，配設皮帶淸潔器53，形成去除中間複製皮帶 2 3 0上的殘留色粉。 又，在記錄材供給匣24設置拾波記錄材的供給滾輪 6 1，緊接著此供給滾輪6 1之後配設送出記錄材的送料滾 輪62，同時在緊接著位於二次複製部位的記錄材搬運路 25配設將記錄材以規定的時序供給於二次複製部位的記 錄滾輪（保護膜滾輪）63。 尙，符號64係送出手插用記錄材的進給滾輪。 一方面，在位於二次複製部位下游側的記錄材搬運路 25配設固定裝置66，在此固定裝置66的下游側裝設記 錄材排出用的排出滾輪67，以形成在本體機殻2 1上部的 收容托盤68用來收容排出記錄材。 再者，在本實施形態，在本體機殻2 1的側方裝設手插 供給裝置（M S I) 7 1，此手插供給裝置7 1上的記錄材形成 於笼料滾輪72及進給滾輪64朝向記錄材搬運路25送出。 再者，又在本體機殼21附設兩面記錄用單元73,該兩 面記錄用單元73，在記錄材之兩面對圖像記錄進行兩面 模式選擇時，使已經完成單面記錄的記錄材排出滾輪67 逆轉，而且，以入口路前面的導輪74引進內部，以適當 數量的搬運滾輪7 7沿內部的記錄材返回搬運路7 6搬運 記錄材，再度供給於保護膜滾輪63側者。 -1 1 - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項3寫本頁)-L--Order --------- Line L 576953 A7 B7 V. Description of the invention (s) Form (eg negative polarity) to the developer. (Please read the note on the back? Note 3 to write this page first) 尙, the symbol 3 5 (35 5 ~ 35d) is to supply toner of each color component to the toner cartridge of each developing unit 33. On the one hand, the exposure unit 40 contains, for example, four semiconductor lasers (not shown), a polygonal mirror 42, or image lenses (not shown) and corresponding photoreceptor units 30 in the unit box 41. Each mirror (not shown) scans the light from the semiconductor laser of each color component on the polygonal mirror 42 and guides the light image through the imaging lens corresponding to the exposure point on the photoreceptor drum 31 By. -丨 "In the present embodiment, the copying unit 23 is, for example, a pair of erection rollers (driving rollers on one side) 231, 23, and a belt 270 across the intermediate frame, and the photoreceptor drum corresponding to each photoreceptor unit 30. A copying device (a copying roller in this example) 5 1 is arranged on the back of the intermediate copying belt 23 0 of the wheel 31, and the voltage of the polarity and reverse polarity of the toner is applied by the copying device 5 1 to form a photoreceptor. The toner image on the body drum 31 is electrostatically copied on the intermediate copy belt 23 0 side. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the second, and the second roller 52 was installed on the downstream side of the middlemost corresponding image forming unit 22d of the middle copy belt 2 3 0, and the second copy device 52 was installed to form the middle copy belt. The first copy image on 23 0 makes a second copy (collective copy) of the recording material. In this embodiment, the secondary copying device 52 includes a secondary copying roller 521 which is crimped to the toner image mounting surface side of the intermediate copying belt 230 and a rear side of the intermediate copying belt 230 The secondary replication roller 51 is a back-up roller opposed to the electrode (in this example, it is a erection roller 23 2). -10- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 576953 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _B7 V. Description of the invention (then, for example, a grounded secondary replication roller 5 2 1. Furthermore, the back-up rollers (the erection rollers 23 2) are applied with toner with polarity and the same polarity bias current. Furthermore, the uppermost image forming unit 22 a of the middle copy belt 23 0 is upstream and is arranged. The belt cleaner 53 is formed to remove the residual toner on the intermediate copying belt 2 30. In addition, the recording material supply cassette 24 is provided with a supply roller 61 for picking up the recording material, and the supply roller 61 is disposed immediately after the supply roller 61. At the same time, a recording roller (protective film roller) 63 for supplying a recording material to the secondary copying site at a predetermined timing is provided on the recording material conveying path 25 immediately following the secondary copying site. A 64-series feed roller for feeding hand-inserted recording materials. On the one hand, a recording material conveying path 25 located downstream of the secondary copying portion is provided with a fixing device 66, and a recording device is provided downstream of the fixing device 66. A discharge roller 67 for discharge is provided with a storage tray 68 formed on the upper part of the main body casing 21 for accommodating the discharge recording material. Furthermore, in the present embodiment, a hand-inserted supply device is installed on the side of the main body casing 21. (MSI) 71. The recording material on this hand-inserted feeding device 71 is formed on a cage material roller 72 and a feed roller 64 and is sent toward the recording material conveying path 25. Furthermore, a two-sided recording unit is attached to the main body casing 21. 73. This double-sided recording unit 73 reverses the recording material discharge roller 67 that has completed single-sided recording when the two-sided mode selection of the two-sided image recording of the recording material is made, and is introduced by the guide wheel 74 in front of the entrance Inside, the appropriate number of conveying rollers 7 7 are used to return the recording material along the internal conveying path 7 6 to convey the recording materials and supply them to the protective film roller 63 again. -1 1-This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back 3 to write this page)
I r«裝 訂_ 576953 A7 B7 五、發明說明（^) 又，說明有關本實施形態在串聯型圖像形成裝置所使 用的感光體鼓輪的驅動系統。 本驅動系統如第3圖所示，具有單一的驅動馬達1 20 (本例爲固定設置），在此驅動馬達1 2 0的驅動軸1 2 0 a 藉由撓性聯軸器1 2 1以同軸驅動連結蝸桿軸（旋轉傳輸 軸）122，同時在此蝸桿軸122中對應於各圖像形成單元 22 (22a〜22 d)之感光體鼓輪31部位，安裝蝸輪125 (具體 上爲125 a〜125d)，一方面在前述各感光體鼓輪3 1 的一端側分別以同軸安裝蝸輪1 2 6 (具體上爲1 2 6 a〜 126d)，以吏各蝸輪126和前述蝸桿125嚙合者。 尙，在本驅動系統，蝸桿輪1 2 2分割爲對應於第一、 第二圖像形成單元22a、22b的第一分割軸體13 1，和對 應於第三、第四圖像形成單元22c、22d的第二分割軸體 1 3 2，各分割軸體1 3 1、1 3 2間係由撓性聯軸器1 3 5連結。 然後，各分割軸體1 3 1、1 3 2分別以一對軸承1 4 1、1 42 或1 4 3、1 44旋轉支承，再者在第1分割軸體1 3 1的一方 軸承141和蝸輪125a之間夾裝賦予能的彈簧147 ° 其次，說明有關本實施形態的圖像形成裝置的動作； 在第2圖及第3圖，若操作圖示外的起動開關爲0N 時，即旋轉驅動馬達1 2 0，藉由撓性聯軸器1 2 1傳達力於 蝸桿軸122。 此時，蝸桿軸1 22雖分割爲多數的分割軸體1 3 1、1 3 2 ’ 但由於以撓性聯軸器1 3 5連接，因此來自驅動馬達1 2 0 的驅動力被傳輸於第一分割軸體1 3 1 ’而且，藉由撓性聯 -12- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------裝--- (請先閱讀背面之注意事項 1!^寫本頁) _ 線」 經濟部智慧財產局員工消費合作社印製 576953 A7 -------B7 _ 五、發明說明（1() 軸器1 3 5傳輸於第二分割軸體！ 3 2。因此，一體地旋轉驅 動蝸桿軸1 2 2。 結果，旋轉以同軸設於蝸桿軸122的蝸輪125，同時旋 與此嚙合的蝸輻126旋轉，使各圖像形成單元22(22a〜 2 2d)的各感光體鼓輪31被驅動。 如此在所驅動的感光體鼓輪3 1上形成各顏色成份色粉 像，同時各感光體鼓輪3 1上的各色成份色粉像各由一次 複製器51的複製作用，依序複製於中間複製皮帶230 上，中間複製皮帶23 0上的多重複製色粉像由二次複製 裝置5 2的複製作用總括複製於記錄材。 此後，複製多重複製色粉像的記錄材經過固定裝置66 後排出於容納托盤6 8。 尤其是，如第4圖〜第8圖所示的本實施形態，構成感 光體單元30，複製單元23及曝光單元40直接定位於構 成本體機殻21機框的本體榧架200。 第4圖表示本實施形態所使用的本體框架構架。 在同圖，本體框架200具有成爲底板的底坐框201，在 此底座框201的前後以離開立,設一對的主框202、203， 再者，在此主框架202、203間架設適當數量（本例爲兩 片）的支撐框架204、2 0 5，以在底座框201、主框架202、 2 03及支撐框架204、205構成強度強的箱狀框架。 在本實施形態，以在主框架202、2 03的上像部形成定 位四個感光體單元3 0之各感光體鼓輪3 1的定位部2 10。 如第4圖〜第6圖所示，構成該定位部2 1 0例如使感光 -13- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 請 先 閲 讀 背 © 之 注 意 事 項 再L 5裝 本 · 頁 訂 線 經濟部智慧財產局員工消費合作社印製 576953 A7 B7 i、發明說明（R) 體鼓輪31的外徑端部或承3 1 1 (本例爲軸承3 Π )具備 由二點p 1、p2所支撐的大致V字狀之v字塊2 i丨的缺口 槽。尙，符號3 1 2係感光體鼓輪3 1的驅動齒輪。 在這裡，V字塊2 1 1的一點p 1在感光體鼓輪3 1驅動時 以相對於感光體鼓輪3 1的徑向作用的驅動力方向（第6 圖中以箭頭符號表示）設置。 又，如第4圖及第7圖所示，在主框202、203的上端 部，形成複製單元23的定位部211、222。 在本實施形態，複製單元23具有藉'由中間複製皮帶230 架設滾輪23 1、2 3 2所架設的一對單元框架2 3 3，而被安 裝在架設滾輪2 3 2的兩端軸承2 3 4及一對單元框架2 3 3 往下方突出的定用腳2 3 5具備作爲被定位部。尙，符號 23 9係中間複製皮帶230的驅動馬達。 於此，在本實施形態，定位部221構成作爲繋合複製 單元23的架設滾輪232軸承2 3 4的定位槽，一方面，定 位部2 22構成作爲載置複製單元23定位用腳2 3 5的定位 面。 再者，在本實施形態，如第4圖、第6圖及第7圖所 示，複製單元23對於本體框架2 00往上下方向或轉轉構 成可等待避開的方式，在單元框架2 3 3的兩外側面分別 附設各感光體鼓輪3 1推壓用的推壓構件23 6者。 在這裡，如第6圖所示，推壓構件2 3 6由彈簧23 7朝 向應予推壓的方向（具體上朝向V字塊2 1 1的支撐點p 1、 p 2推壓感光體鼓輪3 1的方向，賦予能的推壓桿2 3 8等所 -14- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項_寫本頁) 訂 線： 經濟部智慧財產局員工消費合作社印製 576953 A7 _____ B7________ 1、發明說明（Ο ) 構成，例如形成頂接於感光體鼓輪3 1的兩端軸承3 1 1的 一部份3 1 1 a。 然後，在更換感光體單元3 0時（取下時）’從本體框 架2 0 0將複製單元23從第6圖實線所示位置等待避至假 想線所示位置後，取出感光體單元3 0，一方面，在裝設 感光體單元3 0時，藉由複製單元23閂鎖搭扣於本體框 架2 0 0 (相當於定位複製單元23 )，由在複製單元23的 推壓構件236將感光體鼓輪31推壓於本體框架200的V 字塊2 1 1側者。 再者，如第6圖及第8圖所示，在主框架2 02、2 03形 成曝光單元40的定位部241〜243。 在本實施形態，曝光單元4 〇具有大致箱狀的單元箱 4 1，在此單元箱4 1的前側部份（位於和主框2 0 2相對側 的箱部份），以朝向前方突出的定位突起402形成作爲被 定位部，一方面，在單元箱4 1的後側部份至少形成往側 方突出的凸緣部403，在該凸緣部403以朝向前方突出的 一對定位突起4 0 4、4 0 5形成作爲被定位部者。 然後，在此第2的主框203形成有插入前述曝光單元 4 0的矩形狀的插入開口 2 3 0 a，當曝光單元4 0透過此插 入開口 203a插入配置時，曝光單元40的單元箱41的前 側部份即頂接於第1主框202的內側’形成該單元箱4 1 的前端部份接觸於第1主框202的內側’形成以便前述 單元箱4 1後側部份的凸緣部4 0 3頂接於第2主框203的 插入開口 203 a外緣側。 -15- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項$填寫本頁) rl裝 訂· 經濟部智慧財產局員工消費合作社印製 576953 A7 R7 五、發明說明（W) 於是’在本實施形態，定位部2 4 1形成於第1主框2 0 2， 構成作爲嵌合曝光單元40之定位突起402的定位孔。 一方面，定位部242、243形成於第2主框203的插入 開口 203 a緣部，構成作爲嵌合曝光單元44之定位突起 4 0 4、4 0 5的定位孔。 尙’第8圖中符號2 5 0表示以螺栓等的固定具安裝曝 光單元40的安裝孔。又，在本實施形態，雖使用一個共 同的曝光單元4 0，但以每一各圖像形成單元2 2個別設曝 光單元的樣態時，只要將個別的各曝光單元分別定位於 欲定位的構造即可。 又，如第4圖所示的本實施形態，形成於主框2 0 2、2 0 3 的定位部210、221〜222、241〜243中，與主框202、203 對稱地形成的定位部210、221、222，因由重疊兩片主框 2 02、203的狀態同時加工，因此兩者間的位置精度成爲 極高者。尙，對於主框202、203以非對稱式形成的定位 部24 1〜243係分別以單獨加工即可。 尙，第4圖中，符號2 5 1係爲躲避裝設於顯像單元3 3 之主框2 0 3側端部的突出部（例如廢顯像劑回收用的回 收路徑等）開設在主框203的開口。 在此，說明有關本實施形態的圖像形成裝置的性能。 首先，在本實施形態，由於對圖像形成裝置的本體框 架200, 一體形成感光體單元30,複製單元23及曝光單 元40的定位部210、221〜222、241〜243，因此未有夾在 各單元3 0、2 3、4 0互相的互相位置關係的構件，以簡單 -16- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項寫本頁) 訂· 經濟部智慧財產局員工消費合作社印製 576953 1、發明說明（π) 的結構良好地精度來定位各單元30、23、40。 又，在本實施形態在本體框架2 0 0中，崩潰形成各定 位部 210、221〜222、241〜243的兩片板全構件的主框 2 02、203的對準被崩潰，儘管各感光體單元30(具體上 爲3 0(1)〜3 0(4))的絕對位置從理想的位置（例如圖中爲 水平位置）偏移，亦如第9圖（a)所不，各感光體單元30 間的平行度等相對的位置關係的偏移非常小，保持各感 光體單元3 0的感光體鼓輪3 1的平行度（圖中，一點鏈 線表示感光體鼓輪3 1的軸線）。 因此，來自曝光單元40的各曝光光束 Bm(Bm(l)〜 Bm(4))，和各感光體單元3 0 (3 0( 1 )〜30(4))的感光體鼓輪 3 1的相對位置關係成爲互相一致，例如即使未設置由感 光體鼓輪3 1和曝光單元40的平行度偏移而產生的變形 機構等，仍不會產生各色成份圖像色偏差。 關於此點，假設於以支撐構件等於在各單元3 0、23、 經濟部智慧財產局員工消費合作社印製 4 0和本體框架2 0 0之間的比較樣態，調查圖像品質，結 果如第9圖（b)所示，因有各感光.體單元30(30(1)〜3 0(4)) 的感光體鼓輪3 1平行度偏移的顧慮，因此來自曝光單元 40的各曝光光束Bm(Bm(l)〜Bm(4))，和各感光體單元 3 0(3 0( 1 )〜3 0(4))的感光體鼓輪3 1的相對位置關係偏移’ 確認有產生各色成份圖像顏色偏差的顧慮。 再者，在本實施形態，由於使感光體單元3 0的感光體 鼓輪3 1的外徑端部或保持外徑端部的構件（在本例爲軸 承3 1 1 )，定位於具備本體框架200之V字塊2 1 1的定位 -17- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 --------B7___ i、發明說明（乂） 部2 10，因此在CRU結構成的感光體單元30’亦隨著更 換等的反覆定位精度良好，以簡單的結構即可防止發生 顏色偏差。 又，V字塊型定位部2 1 0，於感光體鼓輪3 1驅動時的 驅動力作用的方向作成設置成爲一個支持點的壁構成’ 故當驅動感光體鼓輪3 1時，亦少有定位精度惡化的顧慮。 尤其是，在本實施形態，以推壓構件23 6將感光體鼓 輪3 1推壓次定位部2 1 0的V字塊2 1 1側’因此經常保持 良好的感光體鼓輪3 1的定位精度。 本發明的實施形態，並不限定於上述者’如以下所例 示作適當設計變更也無妨。 對於複製單元23的定位構造而言，例如第1〇圖所示， 與上述的實施形態不同，在單元框架2 3 3設置定位突起 2 6 0及定位用腳2 3 5，將此等作爲被定位部並定位於本體 框架200的定位部221、222也可以。 經濟部智慧財產局員工消費合作社印製 又，作爲曝光單元4 0.的定位構造，如第11圖及第12 圖所示，在本體2 0 0的側方確保曝光單兀4 0的插入開口 2 7 0 (相當於去除第4圖實施形態的支持框架形狀），透 過此插入開口 270插入曝光單元40定位也可以。 此時，作爲曝光單元40而言，在單元箱41的圖中左 側方部份形成定位突片406 ’同時在單元箱4 1的前後部 份的圖中右側緣部分別形成突出於外側的定位突起 4 0 7、4 0 8，將此等作爲被定位部，一方面，在支撐框架 205形成作多插入前述定位突片406的定位部之定位長孔 -1 8 - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 B7 五、發明說明（q) 28 1，同時在主框202、2 03的圖中右側緣部形成作爲嵌 合定位突起4〇7、4〇8的定位部之定位U字孔282、283 者。 如第12圖（a)所示，在本實施形態定位突片406的寬度 尺寸，設定爲較定位長孔2 8 1的縱向尺寸狹窄，定位突 片406變成容易進入定位長孔281。 然後，如欲定位曝光單元40，如第12圖（a)所示，對 於定位長孔2 8 1插入定位突片4 0 6 ’並以此狀態，以預先 定裝於支持框架2 0 5的定位保持具2 8 5將定位突片4 0 6 推壓保持於定位長孔2 8 1下緣，再者’如第1 2圖（b )所示， 以定位突起4 0 7、4 0 8繋止於定位U字狀2 8 2、2 8 3的狀 態，由預先安裝於主框202、2 03的定位保持具2 86、287 在定位突起407、408推壓保持於定位U字孔2 82、283 像即可。 尙，符號288、289係以螺栓等固定具安裝曝光單元40 的安裝孔。 再者，對於本體框架2 0 0構造’例如作爲感光體單元 3 〇的定位部2 1 0於主框2 0 2、2 0 3上緣形成缺口槽的樣 態，係成爲降低主框202、2 03的剛性，但以補強主框202、 203剛性的意，如第1 3圖所示’例如在每一主框2 02、 2 03由四個缺口槽所成的定位部2 1 0的一部份或全部（本 例爲內側之兩個），裝設剛性補強部290也可以。 厂 在這裡，對於剛性補強部200而言，可列出預先在如 兩値定位部2 1 0的上方一體裝設E字狀的連接部，而且， 以使彎曲加工此連接部者。 再者，又作為本體框架200構造，在上述實施樣態， 雖以各框架2 0 1 0 5構成葙狀框架，但以如除掉主框 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項寫本頁) ----- 訂---------养 經濟部智慧財產局員工消費合作社印製 576953 A7 — B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（Is ) 2 0 2、2 0 3的狀態而已建立箱狀框架，並以此附加主框 2 0 2、2 0 3的結構也可以，又，欲謀求本體框架的簡化， 則如第1 4圖所示，將曝光單元4Ό的單元箱4 1本身例如 作爲如主框202、203來兼用也可以。 又，在本實施形態，雖表示對於感光體單元30，複製 單元23及曝光單元40的定位構造，但不限定於此，例 如第15圖所示，在本體框架2 00，裝設保護滾輪63或固 定裝置6 6加熱滾輪之兩端設欲定位的定位部（例如由定 位孔構成）301、3 02，或裝設檢測中間複製皮帶23 0上 的圖像濃度或畫素位置的感測器單元3 1 0之托架（未圖 示）設欲定位的定位部3 03等也可以。 例如將感測器單元3 1 0以直接用來定位本體框架200， 則容易地可將感測器單元3 1 0和本體框架23 0的互相關 係保持於高精度，所以其分量提高了由感測器單元3 1 0 的檢測精度。 [發明效果] 如以上所說明，依本發明，由於在本體框架一體形成 圖像形成用輔助單元的定位部，因此可以簡單的結構提 高對於本體框架的圖像形成用輔助單元的定位精度。 尤其是，由於本發明可提高對於本體框架的定位精 度，當作爲串聯型圖像形成裝置的對象時，儘管圖像形 成用的輔助單元屬於使用者可更換的CRU結構，亦可以 簡單的結構確實地抑制顏色偏差的發生。 [圖式之簡單說明] -20- 請 先 閱 讀 背 之 注 意 事 項I r «Binding_ 576953 A7 B7 5. Description of the Invention (^) The drive system of the photoreceptor drum used in the tandem-type image forming apparatus of this embodiment will be described. As shown in Figure 3, this drive system has a single drive motor 1 20 (this example is a fixed installation). Here, the drive shaft of the drive motor 1 2 0 is driven by a flexible coupling 1 2 1 to A worm shaft (rotary transmission shaft) 122 is connected by a coaxial drive, and a worm wheel 125 (specifically 125 a) is mounted on the worm shaft 122 corresponding to the photoreceptor drum 31 of each image forming unit 22 (22a to 22d). ~ 125d). On the one hand, worm gears 1 2 6 (specifically 1 2 6 a to 126d) are coaxially mounted on one end side of each of the photoreceptor drums 3 1, and each of the worm gears 126 and the worm 125 mesh with each other. Alas, in this drive system, the worm wheel 1 2 2 is divided into a first divided shaft body 13 1 corresponding to the first and second image forming units 22 a and 22 b, and a third and fourth image forming unit 22 c The 22d second divided shaft bodies 1 3 2 are connected to each other by a flexible coupling 1 3 5 between the divided shaft bodies 1 3 1 and 1 3 2. Then, each of the divided shaft bodies 1 3 1, 1 3 2 is rotatably supported by a pair of bearings 1 4 1, 1 42 or 1 4 3, 1 44, and one of the bearings 141 and An energized spring 147 is sandwiched between the worm gears 125a. Next, the operation of the image forming apparatus according to this embodiment will be described. In Figs. 2 and 3, if the start switch (not shown in the illustration) is 0N, it rotates. The drive motor 1 2 0 transmits a force to the worm shaft 122 through a flexible coupling 1 2 1. At this time, although the worm shaft 1 22 is divided into a plurality of divided shaft bodies 1 3 1 and 1 3 2 ′, the worm shaft 1 22 is connected by a flexible coupling 1 35, so the driving force from the driving motor 1 2 0 is transmitted to the first One split shaft body 1 3 1 'Moreover, by the flexible joint -12- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------- -Equipment --- (Please read the note 1 on the back first! ^ Write this page) _ LINE "Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 576953 A7 ------- B7 _ 5. Description of the invention (1 () The shaft device 1 3 5 is transmitted to the second divided shaft body! 3 2. Therefore, the worm shaft 1 2 is rotated and driven integrally. As a result, the worm wheel 125 coaxially provided on the worm shaft 122 is rotated and simultaneously rotated with the meshed gear. The worm spoke 126 is rotated to drive each photoreceptor drum 31 of each image forming unit 22 (22a to 22d). In this way, a toner image of each color component is formed on the driven photoreceptor drum 31, and each Each color component toner image on the photoreceptor drum 31 is copied by the primary replicator 51 in order, and sequentially copied on the intermediate copy belt 230, and the multiple copies on the intermediate copy belt 230. The copied toner image is copied to the recording material by the duplication function of the secondary copying device 52. Thereafter, the recording material for the multiple copied toner image is discharged to the storage tray 6 8 through the fixing device 66. In particular, as shown in FIG. The present embodiment shown in Fig. 8 constitutes a photoreceptor unit 30, a copying unit 23, and an exposure unit 40 directly positioned on a main body frame 200 constituting a frame of the main body casing 21. Fig. 4 shows the frame used in this embodiment. Body frame structure. In the same figure, the body frame 200 has a bottom seat frame 201 which serves as a bottom plate, and a pair of main frames 202 and 203 are provided at the front and rear sides of the base frame 201. Furthermore, in this main frame 202, An appropriate number (two pieces in this example) of support frames 204 and 205 are erected between 203 to form a strong box-shaped frame on the base frame 201, the main frame 202, 202, and the support frames 204 and 205. In this implementation In the form, a positioning portion 2 10 for positioning each photoreceptor drum 31 of the four photoreceptor units 30 is formed on the upper image portion of the main frames 202 and 202. As shown in FIGS. Positioning section 2 1 0 For example, -13- This paper size is applicable National Standard (CNS) A4 Specification (210 X 297 mm) Please read the precautions of the back © and then print it in 5 pages. Pages are printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumers' Cooperatives. 576953 A7 B7 i. Description of the invention ( R) The outer diameter end of the body drum 31 or the bearing 3 1 1 (bearing 3 Π in this example) is provided with a notch groove of a substantially V-shaped V block 2 i 丨 supported by two points p 1 and p 2. Alas, the symbol 3 1 2 is a driving gear of the photoreceptor drum 31. Here, a point p 1 of the V block 2 1 1 is set in a direction of a driving force acting in a radial direction with respect to the photoreceptor drum 3 1 when the photoreceptor drum 3 1 is driven (indicated by an arrow symbol in FIG. 6). . Further, as shown in Figs. 4 and 7, positioning portions 211 and 222 of the copy unit 23 are formed at the upper end portions of the main frames 202 and 203. In this embodiment, the copy unit 23 has a pair of unit frames 2 3 3 which are erected by the intermediate copy belt 230 erection rollers 23 1 and 2 3 2, and are mounted on both ends of the installation roller 2 3 2 with bearings 2 3 4 and a pair of unit frames 2 3 3 are fixed feet 2 3 5 which protrude downward, and are provided as a to-be-positioned part. Alas, the symbol 23 9 is a drive motor for the intermediate copy belt 230. Here, in the present embodiment, the positioning portion 221 constitutes a positioning groove for mounting the roller 232 bearing 2 3 4 as the coupling and copying unit 23. On the one hand, the positioning portion 2 22 constitutes the positioning foot 2 3 5 as the placing and copying unit 23. Positioning surface. Furthermore, in this embodiment, as shown in FIG. 4, FIG. 6, and FIG. 7, the copying unit 23 can wait for avoidance in the vertical direction or rotation of the main body frame 200, and the unit frame 2 3 Pressing members 23 6 for pressing the photoreceptor drums 31 are attached to both outer surfaces of 3, respectively. Here, as shown in FIG. 6, the pressing member 2 3 6 is pressed by the spring 23 7 in the direction to be pressed (specifically, the supporting points p 1 and p 2 of the V block 2 1 1 press the photoreceptor drum. The direction of the wheel 3 1 gives the push rods 2 3 8 and other places -14- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back first_Writing Page) Ordering: Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 576953 A7 _____ B7________ 1. Description of the invention (0) Structure, such as forming a part of the two-end bearings 3 1 1 abutting on the photoreceptor drum 3 1 3 1 1 a. Then, when the photoreceptor unit 30 is replaced (when removed) 'from the main body frame 2 0 0, wait for the copy unit 23 from the position shown by the solid line in FIG. 6 to avoid the position shown by the imaginary line, Take out the photoreceptor unit 30. On the one hand, when the photoreceptor unit 30 is installed, the copying unit 23 is latched to the main body frame 2 0 0 (equivalent to positioning the copying unit 23). The pressing member 236 presses the photoreceptor drum 31 against the V block 2 1 1 side of the main body frame 200. Further, as shown in FIG. 6 and As shown in FIG. 8, positioning portions 241 to 243 of the exposure unit 40 are formed in the main frames 202 and 202. In this embodiment, the exposure unit 40 has a substantially box-shaped unit box 41, and in this unit box 41, The front side portion (the box portion on the opposite side to the main frame 202) is formed with positioning protrusions 402 protruding toward the front as positioning portions. On the one hand, the rear side portion of the unit box 41 is formed at least to the side The flange portion 403 projecting from the side is formed on the flange portion 403 with a pair of positioning protrusions 4 0 4 and 4 05 that protrude forward. Then, the second main frame 203 is inserted therein. The rectangular insertion opening 2 3 0 a of the exposure unit 40 described above. When the exposure unit 40 is inserted through the insertion opening 203 a, the front side portion of the unit box 41 of the exposure unit 40 is abutted on the first main frame 202. The inside of the unit box 41 is formed so that the front end portion of the unit box 41 contacts the inside of the first main frame 202 so that the flange portion 4 0 3 of the rear portion of the unit box 41 abuts on the second main frame 203. Insert the outer edge side of the opening 203 a. -15- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back of the page to fill in this page first) rl binding · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs's Consumer Cooperatives 576953 A7 R7 V. Description of the invention (W) So 'in this embodiment, The positioning portion 2 4 1 is formed in the first main frame 2 02 and forms a positioning hole as a positioning protrusion 402 of the fitting exposure unit 40. On the one hand, the positioning portions 242 and 243 are formed on the edge of the insertion opening 203a of the second main frame 203 and constitute positioning holes as positioning protrusions 4 0 4 and 4 05 of the fitting exposure unit 44. The symbol 2 50 in Fig. 8 indicates a mounting hole for mounting the exposure unit 40 with a fixture such as a bolt. In addition, in this embodiment, although a common exposure unit 40 is used, in the case where the exposure units are individually set for each image forming unit 22, it is only necessary to position the individual exposure units at the positions to be positioned respectively. Just build it. In addition, as shown in FIG. 4, this embodiment is formed in the positioning portions 210, 221 to 222, and 241 to 243 of the main frame 2 0, 2 0 3, and the positioning portions are formed symmetrically to the main frames 202 and 203. 210, 221, and 222 are processed at the same time by overlapping the two main frames 202, 203, so the position accuracy between the two is extremely high. That is, the asymmetric positioning portions 24 1 to 243 of the main frames 202 and 203 may be separately processed. A. In Fig. 4, the symbol 2 51 is opened on the main part to avoid the protruding part (for example, the recycling path for the recycling of waste developer, etc.) installed at the end of the main frame 2 3 of the developing unit 3 3. The opening of the frame 203. Here, the performance of the image forming apparatus according to this embodiment will be described. First, in this embodiment, since the main body frame 200 of the image forming apparatus is integrally formed with the positioning units 210, 221 to 222, and 241 to 243 of the photoreceptor unit 30, the copy unit 23, and the exposure unit 40, it is not sandwiched. The components of each unit 30, 2, 3, and 40's mutual positional relationship are simple. -16- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back first) (Write this page) Order Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 576953 1. The invention description (π) has a structure with good accuracy to locate each unit 30, 23, 40. Further, in the present embodiment, in the main body frame 200, the alignment of the main frames 202, 203 of the two plate full members forming the positioning portions 210, 221 to 222, and 241 to 243 is collapsed. The absolute position of the body unit 30 (specifically 30 (1) to 30 (4)) is shifted from the ideal position (for example, the horizontal position in the figure), as shown in FIG. 9 (a). The deviation of the relative positional relationship such as the parallelism among the body units 30 is very small, and the parallelism of the photoreceptor drums 31 of each photoreceptor unit 30 is maintained (in the figure, a dot chain line represents the photoreceptor drums 31 Axis). Therefore, each of the exposure beams Bm (Bm (l) to Bm (4)) from the exposure unit 40, and the photoreceptor drums 31 of each photoreceptor unit 3 0 (3 0 (1) to 30 (4)) The relative positional relationships are consistent with each other. For example, even if a deformation mechanism or the like caused by the parallelism shift of the photoreceptor drum 31 and the exposure unit 40 is not provided, the color deviation of each color component image does not occur. Regarding this point, suppose that the support component is equal to the comparison between the printing of 40 and the ontology frame 2 0 printed by each unit 30, 23, the employee property cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and the image quality is investigated. The results are as follows As shown in FIG. 9 (b), there are concerns about the parallelism deviation of the photoreceptor drums 31 of each photoreceptor unit 30 (30 (1) to 30 (4)). The relative positional relationship between the exposure beam Bm (Bm (l) ~ Bm (4)) and the photoreceptor drum 31 of each photoreceptor unit 30 (30 (1) ~ 3 0 (4)) is shifted. 'Confirm There is a concern that the color deviation of each color component image is generated. Furthermore, in this embodiment, since the outer diameter end portion of the photoreceptor drum 31 of the photoreceptor unit 30 or the member holding the outer diameter end portion (in this example, the bearing 3 1 1) is positioned to include the body Position of V block 2 1 1 of frame 200 -17- This paper size applies Chinese National Standard (CNS) A4 (210 X 297 mm) 576953 A7 -------- B7___ i. Description of the invention (乂Since the photoreceptor unit 30 ′ formed in the CRU structure also has good positioning accuracy over and over with replacement and the like, the color deviation can be prevented with a simple structure. In addition, the V-shaped positioning portion 2 1 0 is a wall structure provided as a supporting point in a direction in which the driving force acts when the photoreceptor drum 31 is driven. There is a concern that the positioning accuracy deteriorates. In particular, in this embodiment, the photoreceptor drum 3 1 is pressed against the V block 2 1 1 side of the sub-positioning portion 2 1 0 by the pressing member 23 6. Therefore, a good photoreceptor drum 3 1 is always maintained. positioning accuracy. The embodiment of the present invention is not limited to the above-mentioned ones, and it may be possible to make appropriate design changes as exemplified below. Regarding the positioning structure of the copying unit 23, for example, as shown in FIG. 10, different from the above-mentioned embodiment, positioning protrusions 2 60 and positioning feet 2 3 5 are provided in the unit frame 2 3 3, and these are used as substrates. The positioning portion may be positioned on the positioning portions 221 and 222 of the main body frame 200. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs as the positioning structure of the exposure unit 40. As shown in Figures 11 and 12, the side of the body 2 0 0 ensures the insertion opening of the exposure unit 4 0. 270 (corresponding to the shape of the support frame in the embodiment shown in FIG. 4), and the exposure unit 40 may be inserted and positioned through the insertion opening 270. At this time, as the exposure unit 40, positioning projections 406 'are formed on the left side of the unit box 41 in the figure, and at the same time, positioning on the right edge portions of the front and rear portions of the unit box 41 are formed to protrude outward. The protrusions 4 0 7 and 4 0 8 are used as the positioned portions. On the one hand, a positioning slot -1 8 is formed in the supporting frame 205 as a positioning portion for inserting the positioning tab 406 described above. Standard (CNS) A4 specification (210 X 297 mm) 576953 A7 B7 V. Description of the invention (q) 28 1 At the same time, the right side edge of the main frame 202, 20 03 is formed as a fitting positioning protrusion 407, Position the U-shaped holes 282, 283 of the positioning section of the 408. As shown in Fig. 12 (a), the width dimension of the positioning projection 406 in this embodiment is set to be narrower than the longitudinal dimension of the positioning slot 281, and the positioning tab 406 becomes easy to enter the positioning slot 281. Then, if the exposure unit 40 is to be positioned, as shown in FIG. 12 (a), the positioning elongated hole 2 8 1 is inserted into the positioning protrusion 4 0 6 ′, and in this state, it is fixed to the supporting frame 2 0 5 in advance. The positioning holder 2 8 5 pushes and holds the positioning protrusion 4 0 6 on the lower edge of the positioning slot 2 8 1, and further, as shown in FIG. 12 (b), the positioning protrusion 4 0 7, 4 0 8 It is in a state of positioning U-shaped 2 8 2, 2 8 3, and is held by positioning projections 407, 408 by positioning holders 2 86, 287 which are pre-installed on the main frame 202, 2 03, and are held in the positioning U-shaped hole 2 82, 283 like. Alas, the symbols 288 and 289 are mounting holes for mounting the exposure unit 40 with fixtures such as bolts. In addition, for the structure of the main body frame 2 0 'for example, the positioning part 2 1 0 serving as the photoreceptor unit 3 0 forms a notch groove on the upper edge of the main frame 2 2, 2 0 3, which is to reduce the main frame 202, 2 03 rigid, but in order to reinforce the rigidity of the main frame 202, 203, as shown in Figure 13 'for example, in each main frame 2 02, 2 03 is formed by four notch grooves 2 1 0 It is also possible to install a rigid reinforcement part 290 in part or all (two in this example). Here, for the rigid reinforcing portion 200, an E-shaped connecting portion is integrally installed in advance above the two positioning portions 210, for example, and the connecting portion is bent to be processed. Furthermore, as the body frame 200 structure, in the above embodiment, although the frame is formed by the frames 2 0 0 5, the Chinese National Standard (CNS) A4 specification is applied to the paper size of the main frame if it is removed. 210 X 297 mm) (Please read the notes on the back to write this page) ----- Order --------- Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 576953 A7 — B7 Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives V. Invention Description (Is) 2 0 2, 2 3 The box-like frame has been established, and the structure of the main frame 2 2 2, 2 3 can also be added, and, To simplify the body frame, as shown in FIG. 14, the unit box 41 itself of the exposure unit 4 曝光 may be used as the main frames 202 and 203, for example. In this embodiment, the positioning structure of the photoreceptor unit 30, the copy unit 23, and the exposure unit 40 is shown, but it is not limited to this. For example, as shown in FIG. 15, a protective roller 63 is installed in the main body frame 200. Or the fixing device 6 6 The positioning portions (for example, positioning holes) 301, 3 02 to be positioned at both ends of the heating roller, or sensors for detecting the image density or pixel position on the intermediate copy belt 230 The bracket (not shown) of the unit 3 10 may be provided with a positioning portion 3 03 or the like to be positioned. For example, if the sensor unit 3 1 0 is directly used to position the main body frame 200, the mutual relationship between the sensor unit 3 1 0 and the main body frame 23 0 can be easily maintained at a high accuracy, so its component improves the sensing accuracy. Detection accuracy of the detector unit 3 1 0. [Effects of the Invention] As described above, according to the present invention, since the positioning portion of the auxiliary unit for image forming is integrally formed in the main body frame, the positioning accuracy of the auxiliary unit for image forming the main body frame can be improved with a simple structure. In particular, since the present invention can improve the positioning accuracy of the body frame, when it is an object of a tandem-type image forming apparatus, although the auxiliary unit for image formation belongs to a user-replaceable CRU structure, a simple structure can also be used. To suppress the occurrence of color deviation. [Brief description of the diagram] -20- Please read the notes of the memorandum first
訂 線 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 五、發明說明) 第1圖係表示有關本發明圖像形成裝置之槪要說明圖。 第2圖係表示適用本發明圖像形成裝置實施一形態全 體結構的說明圖。 第3圖係表示在本實施形態感光體鼓輪的驅動系統說 .明圖。 第4圖係表示在本實施形態所使用的本體框架構造及 各單元定位部構造的說明圖。 第5圖係表示感光體單元定位構造的說明圖。 第6圖係表示感光體單元定位狀態的要部說明圖。 第7圖係表示轉錄單元定位構造的說明圖。 第8圖係表示曝光單元定位構造的說明圖。 第9圖（a)係表示有關本實施形態的圖像形成裝置圖像 品質的說明圖，（b)係表示有關比較形態圖像形成裝置圖 像品質的說明圖。 第1 0圖係表示轉錄單元定位構造其他例的說明圖。 第1 1圖係表示曝光單元定位構造其他例的說明圖。 第12圖（a)、（b)係表示第11圖中的A部、B部之定位 狀態說明圖。 第1 3圖係表示本體框架構造其他例的說明圖。 第1 4圖係表示本體框架又另一例的說明圖。 第1 5圖係表示其他輔助單元定位構造的說明圖。 (符號說明） 1…本體框架 2…輔助單元 2( 2( 1 )〜2( 3 ))…輔助單元 -21- 576953 經濟部智慧財產局員工消費合作社印製 A7 _B7_五、發明說明（>〃） 2a···像載置體 3…定位部 3(3(1)〜3(5))···定位部 .21…本體機殼 22(22a〜22d)…圖像形成單元 23…複製單元 24···記錄材供給匣 25…記錄材搬運路 30···感光體單元 3 0(3 0( 1 )〜30(4))…感光體單元 3 1…感光體轉筒 32···帶電器（帶電滾輪） 3 3…顯像單元 34···淸潔器 3 5 (3 5 a〜35d)…色粉盒 40…曝光單元 41…單元箱 4 2…多角形鏡 51——次複製器（一次複製滾輪） 52···二次複製裝置 53…皮帶淸潔器 61…供給滾輪 62…送料滾輪 63…保護滾輪（保護膜滾輪） -22- (請先閱讀背面之注意事項再填寫本頁) 訂· .線： 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（ >丨） 64…進給滾輪 6 6…固定裝置 67···記錄材排出用的排出滾輪 6 8…容納托盤 71…手插供給裝置（MSI) 72…供給滾輪 73…兩面記錄用單元 74…導輪 76···記錄材恢復搬運路 77···搬運滾輪 120…驅動馬達 1 2 0a…驅動軸 121…撓性軸器 122…蝸桿軸（旋轉傳輸軸） 1 2 5 ( 1 2 5 a〜125d)·.·蝸輪 1 2 6( 1 26a 〜126d)…蝸輪 1 3 1…第一分割軸體 132…第二分割軸體 135…可撓聯軸器 14 1、142、143、144···軸承 147…賦予能彈簧 200…本體框架 20 1…底座框 2 02、2 03…主框 - -23- (請先閱讀背面之注意事項再填寫本頁) 訂· •線_ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 _B7_ 五、發明說明（>>) 2 03 a··.插入開口 2 04、205…支持框架 20 1、221 〜222、241 〜243···定位咅$ 2 1 1…V字塊 22 1、2 22···定位咅^ 2 3 0…中間轉錄皮帶 2 3 1、2 3 2…架設滾輪（一方爲驅動滾輪） 2 3 3…單元框架 2 3 4…軸承 2 3 5…定位用腳 2 3 6…推壓構件 2 3 7…彈簧 2 3 8…推壓桿 2 3 9…驅動馬達 241〜243…定位部 2 50…安裝孔 2 5 1…開口 260…定位突起 2 70…插入開口 經濟部智慧財產局員工消費合作社印製 2 8 1…定位長孔 2 82、2 8 3…定位U字孔 2 8 5…定位保持具 2 8 6、2 8 7…定位保持具 2 8 8、2 89…定裝孔 -24- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 576953 A7 B7 五、發明說明（7)) 290·.·岡!1性補強部 30 1、3 02 ^ 3 03·..定位咅P 3 10…感測器單元 3 1 1…軸承 3 1 la···軸承3 1 1的一部 3 1 2…感光體鼓輪3 1的驅動齒輪 402…定位突起 4 03…凸緣部 404、405…定位突起 406…定位突片 407、40 8…定位突起 4 1 1…單元箱 52 1…二次複製滾輪Alignment This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 576953 V. Description of the invention Figure 1 is a diagram illustrating the main explanation of the image forming apparatus of the present invention. Fig. 2 is an explanatory diagram showing the overall configuration of an embodiment to which the image forming apparatus of the present invention is applied. Fig. 3 is a schematic diagram showing a driving system of a photoreceptor drum in this embodiment. Fig. 4 is an explanatory diagram showing a main body frame structure and a unit positioning portion structure used in this embodiment. Fig. 5 is an explanatory diagram showing a photoreceptor unit positioning structure. FIG. 6 is an explanatory diagram of a main part showing a positioning state of the photoreceptor unit. Fig. 7 is an explanatory diagram showing a transcription unit localization structure. FIG. 8 is an explanatory diagram showing the positioning structure of the exposure unit. Fig. 9 (a) is an explanatory diagram showing the image quality of the image forming apparatus of this embodiment, and (b) is an explanatory diagram showing the image quality of the image forming apparatus of a comparative form. FIG. 10 is an explanatory diagram showing another example of a transcription unit localization structure. FIG. 11 is an explanatory diagram showing another example of the positioning structure of the exposure unit. Figs. 12 (a) and (b) are explanatory diagrams showing the positioning states of parts A and B in Fig. 11. Figs. Fig. 13 is an explanatory diagram showing another example of the structure of the body frame. Fig. 14 is an explanatory diagram showing still another example of the ontology frame. Fig. 15 is an explanatory diagram showing a positioning structure of another auxiliary unit. (Explanation of symbols) 1 ... Ontology frame 2 ... Auxiliary unit 2 (2 (1) ~ 2 (3)) ... Auxiliary unit-21- 576953 Printed by A7 _B7_ of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy ; 〃) 2a ... The image mounting body 3 ... Positioning section 3 (3 (1) to 3 (5)) ... Positioning section. 21 ... Main body case 22 (22a to 22d) ... Image forming unit 23 … Copy unit 24… recording material supply cassette 25… recording material conveyance path 30… photoreceptor unit 3 0 (3 0 (1) to 30 (4))… photoreceptor unit 3 1… photoreceptor drum 32 ··· Electrical device (charged roller) 3 3 ... Development unit 34 ·· 淸 Cleaner 3 5 (3 5 a ~ 35d) ... Toner box 40 ... Exposure unit 41 ... Unit box 4 2 ... Polygonal mirror 51 ——Secondary copying device (primary copying roller) 52 ... Secondary copying device 53 ... belt cleaner 61 ... supplying roller 62 ... feeding roller 63 ... protective roller (protective film roller) -22- (Please read the Note: Please fill in this page again.) Order..: The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 576953 A7 B7 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs Description of the invention (> 丨) 64 ... feed roller 6 6 ... fixing device 67 ... discharge roller 6 for recording material discharge ... storage tray 71 ... hand-inserted supply device (MSI) 72 ... supply roller 73 ... both sides Recording unit 74 ... Guide wheel 76 ... Record material recovery conveyance path 77 ... Transport roller 120 ... Drive motor 1 2 0a ... Drive shaft 121 ... Flexible shaft device 122 ... Worm shaft (rotary transmission shaft) 1 2 5 (1 2 5 a ~ 125d) ··· worm wheel 1 2 6 (1 26a ~ 126d) ... worm wheel 1 3 1 ... first split shaft body 132 ... second split shaft body 135 ... flexible coupling 14 1,142 , 143, 144 ... Bearing 147 ... Energized spring 200 ... Body frame 20 1 ... Base frame 2 02, 2 03 ... Main frame--23- (Please read the precautions on the back before filling out this page) Order · • Line _ This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 576953 A7 _B7_ V. Description of the invention (> >) 2 03 a ... Insertion opening 2 04, 205 ... Support frame 20 1, 221 to 222, 241 to 243 ... Positioning 咅 $ 2 1 1 ... V block 22 1, 2 22 ... Positioning 咅 ^ 2 3 0 ... Intermediate transcription belt 2 3 1, 2 3 2 ... Roller (one drive roller) 2 3 3 ... Unit frame 2 3 4 ... Bearing 2 3 5 ... Positioning foot 2 3 6 ... Pushing member 2 3 7 ... Spring 2 3 8 ... Push rod 2 3 9 ... Drive motor 241 ~ 243 ... Positioning part 2 50 ... Mounting hole 2 5 1 ... Opening 260 ... Positioning protrusion 2 70 ... Insertion opening Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2 8 1 ... Positioning long holes 2 82, 2 8 3 ... Positioning U-shaped hole 2 8 5… Positioning holder 2 8 6, 2 8 7… Positioning holder 2 8 8, 2 89… Setting hole -24- This paper size applies to China National Standard (CNS) A4 (210 X 297) (Mm) 576953 A7 B7 V. Description of the invention (7)) 290 ··· gang! 1 sex reinforcement part 30 1, 3 02 ^ 3 03 ... Positioning 咅 P 3 10… Sensor unit 3 1 1… Bearing 3 1 la ... Bearing 3 1 1 3 1 2 ... Drive gear 402 of photoreceptor drum 3 1 ... Positioning protrusion 4 03 ... Flange portion 404, 405 ... Positioning protrusion 406 ... Positioning tab 407, 40 8… positioning protrusion 4 1 1… unit box 52 1… secondary copy roller
Bm(Bm(l)〜Bm(4))…曝光光束 (請先閱讀背面之注意事項再填寫本頁) 訂---------線j 經濟部智慧財產局員工消費合作社印製 -25- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Bm (Bm (l) ~ Bm (4)) ... exposure beam (please read the precautions on the back before filling this page) Order --------- line j Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs -25- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)