JPH02186366A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPH02186366A
JPH02186366A JP1006537A JP653789A JPH02186366A JP H02186366 A JPH02186366 A JP H02186366A JP 1006537 A JP1006537 A JP 1006537A JP 653789 A JP653789 A JP 653789A JP H02186366 A JPH02186366 A JP H02186366A
Authority
JP
Japan
Prior art keywords
light source
exposure light
side wall
photoreceptor
opening
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
Application number
JP1006537A
Other languages
Japanese (ja)
Other versions
JP2730947B2 (en
Inventor
Fumihiko Hamada
浜田 文彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1006537A priority Critical patent/JP2730947B2/en
Publication of JPH02186366A publication Critical patent/JPH02186366A/en
Application granted granted Critical
Publication of JP2730947B2 publication Critical patent/JP2730947B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To facilitate a work by firmly fixing an exposure light source attachably/detachably, and making an opening wide enough through which a photosensitive body can pass. CONSTITUTION:In an exposure device 9 as the exposure light source, its one end is fixed to one side wall 10 of the chassis of a device main body 1 attachably/detachably, and the other end is fixed to an attaching plate 14 attachably/detachably which are attachably and detachably mounted to the opening 13 provided on the other side wall 12; the opening 13 is wide enough through which the photosensitive body 2 can pass. Therefore, the only photosensitive body 2 can be attached to and detached from the other side wall of the chassis without pulling out the exposure light source 9. Thus, the work can be considerably facilitated compared with that for a conventional device.

Description

【発明の詳細な説明】 (イ) 産業上の利用分野 本発明は、例えば感光体ドラムの内部に露光用光源を配
置して、感光体ドラムの内側から露光する形式の像形成
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an image forming apparatus of a type in which, for example, an exposure light source is disposed inside a photoreceptor drum and the image is exposed from inside the photoreceptor drum. be.

(ロ)従来の技術 この種の像形成装置は、例えば特開昭58−15395
7号公報に示されている。この公報では明らかではない
が、感光体ドラムの内部に露光用光源が挿入されており
、感光体ドラムを交換する際には、先ず感光体ドラムか
ら露光用光源をその軸線方向に引抜き、次いで感光体ド
ラムを前記軸線と直交する方向に取出すものと思われる
(b) Prior art This type of image forming apparatus is known, for example, from Japanese Patent Application Laid-Open No. 58-15395.
This is shown in Publication No. 7. Although it is not clear in this publication, an exposure light source is inserted inside the photoreceptor drum, and when replacing the photoreceptor drum, the exposure light source is first pulled out from the photoreceptor drum in its axial direction, and then the exposure light source is inserted into the photoreceptor drum. It is assumed that the body drum is taken out in a direction perpendicular to the axis.

〈ハ)発明が解決しようとする課題 前述のように従来の技術では、感光体ドラムのみを看脱
する際にも、先ず露光用光源を引抜き、しかる後に感光
体ドラムを取外す必要があり、作業が煩雑になる虞があ
った。
<C) Problems to be Solved by the Invention As mentioned above, in the conventional technology, even when only the photoreceptor drum is removed, it is necessary to first pull out the exposure light source and then remove the photoreceptor drum, which makes the work difficult. There was a risk that it would become complicated.

また、感光体ドラムの着脱方向がその軸線方向と直交す
る方向である場合、装置の全体構造を設計する際に、そ
の自由度が制限を受ける虞もある。
Furthermore, if the direction in which the photosensitive drum is attached and detached is perpendicular to its axial direction, the degree of freedom in designing the overall structure of the apparatus may be restricted.

(ニ)課題を解決するための手段 本発明は、透明基体とその上に形成された透明導IIt
Jtlおよび光導電体層とを含みかつ所定方向に移動す
る感光体と、感光体の透明基体側に配置きれかつ透明基
体および透明導電層を通して光導電体層を露光するため
の露光用光源とを備える像形成装置において、前記露光
用光源は、その一端が装置本体のシャーシの−0[壁に
着脱可能に固着され、他端が他側壁に開設されている開
口に!l励可能に装着された取付板に着脱可能に固着さ
れており、前記開口は前記感光体が通過し得る広さを有
していることを特徴とする像形成装置である。
(d) Means for Solving the Problems The present invention provides a transparent substrate and a transparent conductor IIIt formed thereon.
A photoconductor that includes a JTL and a photoconductor layer and moves in a predetermined direction, and an exposure light source that is disposed on the transparent substrate side of the photoconductor and that exposes the photoconductor layer through the transparent substrate and the transparent conductive layer. In the image forming apparatus, the exposure light source has one end removably fixed to the wall of the chassis of the apparatus main body, and the other end connected to an opening provided in the other side wall. The image forming apparatus is characterized in that the image forming apparatus is removably fixed to a mounting plate that is mounted so as to be excitable, and the opening has a width that allows the photoreceptor to pass through.

(ホ)作用 本発明では、露光用光源は、その一端が装置本体のシャ
ーシの一側壁に着脱可能に固着され、他端が他側壁に開
設されている開口に着脱可能に装着された取付板に着脱
可能に固iすれており、前記開口は前記感光体が通過し
得る広さを有しているので、前記シャーシの他側壁から
、前記感光体のみ若しくは露光光源のみを着脱し得る。
(E) Function In the present invention, the exposure light source has one end removably fixed to one side wall of the chassis of the apparatus main body, and the other end removably attached to the mounting plate in an opening provided in the other side wall. Since the opening is wide enough for the photoreceptor to pass through, only the photoreceptor or only the exposure light source can be attached and removed from the other side wall of the chassis.

(へ) 実施例 第1図は本発明の一実施例としてのLEDプリンタの概
略的構成図、第2図は部分断面斜視図、第3図および第
4図は要部側面図である。
(f) Embodiment FIG. 1 is a schematic configuration diagram of an LED printer as an embodiment of the present invention, FIG. 2 is a partially sectional perspective view, and FIGS. 3 and 4 are side views of main parts.

これらの図において、〈1)は装置本体で、当該装置本
体(1)内部に感光体ドラム(2)が回転自在に支持き
れる。この感光体ドラム(2)は、従来の像形成袋e(
例えば特開昭58−153957号)と同様に、円筒状
の透明なガラス基体と、そのガラス基体の外周側壁に順
次積層きれた透明導電層および光導電体層とからなる。
In these figures, <1) is an apparatus main body, and a photosensitive drum (2) can be rotatably supported inside the apparatus main body (1). This photosensitive drum (2) is a conventional image forming bag e(
For example, as in JP-A-58-153957), it consists of a cylindrical transparent glass substrate, and a transparent conductive layer and a photoconductor layer that are sequentially laminated on the outer peripheral side wall of the glass substrate.

そして前記感光体ドラム(2)は、その周囲に配置され
た、1個の駆動ローラ(3)と2個の従動ローラ(4)
(s )(第1図、第4図参照)によって回転自在に保
持されている。なお、これらのローラ(3)(4)(5
)は、感光体ドラム(2)の両端部近傍の、非画像形成
領域に当接されている。
The photosensitive drum (2) has one driving roller (3) and two driven rollers (4) arranged around it.
(s) (see Figures 1 and 4). In addition, these rollers (3) (4) (5
) are in contact with non-image forming areas near both ends of the photoreceptor drum (2).

前記感光体ドラム(2)の内部には、その軸線方向に延
在するLEDホルダ〈6)および当該LEDホルダ(6
)に装着され前記軸線方向に密接配列されたLEDアレ
イ(7)、短焦点レンズ列(8)からなる、露光用光源
としての露光装置(9)が水平方向に挿入されている。
Inside the photoreceptor drum (2), there are an LED holder (6) extending in the axial direction thereof and the LED holder (6).
) is inserted in the horizontal direction as an exposure device (9) as an exposure light source, which is composed of an LED array (7) and a short focus lens array (8) mounted on the lens and closely arranged in the axial direction.

前記LEDホルダ(6)の一端は、装置本体(1)のシ
ャーシの一方の側壁(10)にねじ(11)にて固定さ
れている。前記シャーシの他方の側壁〈12)には、前
記感光体ドラム(2)をその軸線方向に挿抜し得る開口
(13)が開設きれており、当該開口〈13)には取付
板(14)がねじ(15)にて着脱可能に固着されてい
る。前記取付板(14)の内側には、2本の突起(16
)が突設されており、前記LEDホルダ(6)の他端1
.=は、当該突起(16)が挿入きれ得る保持穴(17
)が穿設されている。
One end of the LED holder (6) is fixed to one side wall (10) of the chassis of the device main body (1) with a screw (11). An opening (13) through which the photoreceptor drum (2) can be inserted and removed in the axial direction is formed in the other side wall (12) of the chassis, and a mounting plate (14) is provided in the opening (13). It is removably fixed with a screw (15). There are two protrusions (16) inside the mounting plate (14).
) is provided protrudingly, and the other end 1 of the LED holder (6)
.. = indicates the holding hole (17) into which the projection (16) can be inserted.
) are drilled.

なお、前記感光体ドラム(2〉は、ばね(36)(37
)によって、その軸線方向の位置決めがなされる。
Note that the photosensitive drum (2>) has springs (36) (37).
) determines its axial position.

第1図において、装置本体(1)の右下部には、内部に
記録紙(18)が積載きれる給紙力セラ)(19)が、
水平方向に挿抜自在に挿入されている。この給紙カセッ
ト(19)の底部には、記録紙保持板(20)が鉛直方
向に揺動自在に装着されており、前記記録紙(18)は
この、3a録紙保持板(20)上に積載される。
In Fig. 1, in the lower right part of the main body (1) of the apparatus is a paper feeder (19) that can hold recording paper (18) inside.
It is inserted so that it can be inserted and removed horizontally. A recording paper holding plate (20) is attached to the bottom of this paper feed cassette (19) so as to be able to swing freely in the vertical direction, and the recording paper (18) is placed on this 3a recording paper holding plate (20). will be loaded on.

装置本体(1)の、前記給紙カセット(19)の下流側
端部上方に給紙ローラ(21)が備えられ、この給紙ロ
ーラ(21)の下方に、前記記録紙保持板(20〉を上
方に持上げるための、ばね(図示せず)によって時計方
向に付勢きれた持上レバー(22)が設けられている。
A paper feed roller (21) is provided above the downstream end of the paper feed cassette (19) of the apparatus main body (1), and the recording paper holding plate (20) is provided below the paper feed roller (21). A lifting lever (22) biased clockwise by a spring (not shown) is provided for lifting the.

従って、給紙カセット(19)を装置本体(1)の右側
から水平方向に挿入すると、前記記録紙保持板(20)
は持上レバー(22)によって持上げられ、最上部の記
録紙(18)が前記給紙a−ラ(21)に圧接跡れるこ
とになる。
Therefore, when the paper feed cassette (19) is inserted horizontally from the right side of the apparatus main body (1), the recording paper holding plate (20)
is lifted by the lifting lever (22), and the uppermost recording paper (18) is pressed against the paper feed a-ra (21).

前記給紙ローラ(21)の、給紙方向に沿って下流側に
は、給紙ローラ(21)によって給送されて来た記録紙
(18)を−旦停止させた後、タイミングをとって再給
送するためのレジストローラ対(23)(24)が設け
られている。
On the downstream side of the paper feed roller (21) along the paper feeding direction, the recording paper (18) that has been fed by the paper feed roller (21) is stopped at a certain timing. A pair of registration rollers (23) and (24) are provided for refeeding.

前記感光体ドラム(2)外部の、前記露光装置(9)の
短焦点レンズ列(8〉に対向する部位に、現像装置(2
5)が設けられている。
A developing device (2) is provided outside the photoreceptor drum (2) at a portion facing the short focus lens array (8>) of the exposure device (9).
5) is provided.

前記現像装置(25)は、装置本体(1)のシャーシ位
コイルばね(図示せず)によって常に感光体ドラム(2
)側へ拘引されるように取り付けられる。現像装!(2
5)の現像剤室内に供給きれたトナーは、搬送スクリュ
ー(26)によってマグネットローラ(27〉に搬送さ
れる。搬送されたトナーはマグネットローラ(27)の
円周上で磁気ブラシとして形成きれる。そして、その磁
気ブラシの高言すなわち確立もの高さは、穂立規制板(
28)でi!lltされ、マグネットローラ(27)の
回転に応じて感光体ドラム(2)と対峙する部分に転送
きれる。すなわち、トナーはマグネットロー5 (27
)と感光体ドラム(2)の光導電体層との間に送られる
The developing device (25) is always connected to the photoreceptor drum (2) by a coil spring (not shown) near the chassis of the device body (1).
) side. Developing equipment! (2
The toner completely supplied into the developer chamber 5) is conveyed to the magnet roller (27>) by the conveyance screw (26).The conveyed toner is completely formed as a magnetic brush on the circumference of the magnet roller (27). The height of the magnetic brush is determined by the height regulating plate (
28) And i! llt, and is transferred to the portion facing the photosensitive drum (2) according to the rotation of the magnet roller (27). In other words, the toner is magnetlow 5 (27
) and the photoconductor layer of the photoreceptor drum (2).

一方、図示しないが、マグネットローラ(27)と感光
体ドラム(2)の透明導電層との間にはたとえば200
vの直流電圧が印加されている。そして、マグネットロ
ーラ(27)と対峙する感光体ドラム(2)の光導電体
層には、先のLEDアレイ(7)および短焦点レンズ列
(8)によって画像情報に応じた露光光が照射されてい
る。W先光を受けた光導電体層部分では、その抵抗値が
低下し、したがってマグネットローラ(27)と透明導
電層との閾に上述の電圧によって電流が流れる。したが
って、その部分に存在するトナーはその電流によって帯
電される。他方、露光きれない部分では光導電体層の抵
抗は高いままであり、電流が流れないので、トナーは殆
ど帯電しない、また、露光された感光体ドラム(2)す
なわち光導電体層上には、上述のt演によってトナーの
帯電極性とは逆極性の潜像電荷が生じており、帯電トナ
ーは感光体ドラム(2)の光導電体層表面に静電気力に
よって吸着きれる。このようにして、LEDアレイ(7
)による露光とほぼ同時に、現像装置(25)によって
感光体ドラム〈2)上にトナー像が形成きれる。
On the other hand, although not shown, for example, 200
A DC voltage of v is applied. The photoconductor layer of the photosensitive drum (2) facing the magnet roller (27) is then irradiated with exposure light according to the image information by the LED array (7) and the short focus lens array (8). ing. In the portion of the photoconductor layer that receives the W front light, its resistance value decreases, and therefore a current flows at the threshold between the magnet roller (27) and the transparent conductive layer due to the above-mentioned voltage. Therefore, the toner present in that area is charged by the current. On the other hand, in areas that are not fully exposed, the resistance of the photoconductor layer remains high and no current flows, so the toner is hardly charged. Due to the above-mentioned action, a latent image charge having a polarity opposite to that of the toner is generated, and the charged toner is attracted to the surface of the photoconductor layer of the photoreceptor drum (2) by electrostatic force. In this way, the LED array (7
), a toner image is formed on the photoreceptor drum (2) by the developing device (25).

前記レジストローラ対(23)(24)の下流側(左方
)で、感光体ドラム(2)の下部には、当該感光体ドラ
ム(2)上のトナー像を記録紙(18〉に転写するため
の転写ローラ(29)が圧接されている。
On the downstream side (left side) of the pair of registration rollers (23) and (24), and at the lower part of the photoreceptor drum (2), a toner image on the photoreceptor drum (2) is transferred onto the recording paper (18>). A transfer roller (29) is pressed against the transfer roller.

転写ローラ(29)の下流側(左方)には、記録紙(1
8)上に転写されたトナー像を加熱加圧定着するための
、ヒートローラ対(30)(31)が備えられている。
On the downstream side (left side) of the transfer roller (29), recording paper (1
8) A pair of heat rollers (30) and (31) are provided for fixing the toner image transferred thereon by heat and pressure.

上部のヒートローラ(30)には分離爪(32)が装着
されている。
A separation claw (32) is attached to the upper heat roller (30).

前記ヒートローラ対(30)(31)にて定着諮れた記
録紙(18)は、給紙通路(33)を通ってUターンさ
れ、排紙ローラ対(34)<35)によって排出きれる
The recording paper (18) that has been fixed by the pair of heat rollers (30, 31) is U-turned through the paper feed path (33), and is ejected by the pair of paper ejection rollers (34)<35).

[Eローラ対(34)(35)によって排出きれた記録
紙(18)は、装置本体(1)の上部に排出される。
[The recording paper (18) that has been completely ejected by the E roller pair (34) and (35) is ejected to the upper part of the apparatus main body (1).

本実施例では、シャーシの他方の側壁(12)に感光体
ドラム(2)が通過し得る開口(13)が開設されてい
るので、露光装置(9)を取外すことなく、感光体ドラ
ム(2)のみを着脱することができる。
In this embodiment, since the opening (13) through which the photoreceptor drum (2) can pass is provided in the other side wall (12) of the chassis, the photoreceptor drum (2) can be opened without removing the exposure device (9). ) can be attached and detached.

(トン 発明の効果 本発明では、露光用光源を引抜かずとも、シャーシの他
側壁から感光体のみを着脱することができるので、従来
装置に比較してその作業は極めて容易となる。
Effects of the Invention In the present invention, only the photoreceptor can be attached and detached from the other side wall of the chassis without having to pull out the exposure light source, so this operation is extremely easy compared to conventional devices.

また、感光体を取外すことなく、露光用光源のみを着脱
することも可能となる。
Furthermore, it is also possible to attach and detach only the exposure light source without removing the photoreceptor.

更に、感光体ドラムが使用これた場合、感光体ドラムは
その軸線方向に挿抜きれるので、感光体ドラムの周囲に
も、不動の部品を自由に配置でき、設計上の自由度が向
上すると共に、小型化を企図し得る。
Furthermore, when the photoreceptor drum is used up, the photoreceptor drum can be inserted and removed in the axial direction, so stationary parts can be freely placed around the photoreceptor drum, increasing the degree of freedom in design. Miniaturization can be planned.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の概略的構成図、第2図は部
分断面斜視図、第3図および第4図は要部側面図である
。 (1)・・・装置本体、(2)・・・感光体ドラム、(
3)・・・駆動ローラ、(4)(5)・・・従動ローラ
、(6)・・・LEDホルダ、(7)・・・LEDアレ
イ、(8)・・・短焦点レンズ列、(9)・・・露光装
置、(10)・・・一方の側壁、(12)・・・他方の
側壁、 <13)・・・開口、(14)・・・取付板、
(18)・・・記録紙。
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a partially sectional perspective view, and FIGS. 3 and 4 are side views of essential parts. (1)...Device body, (2)...Photoconductor drum, (
3)... Drive roller, (4) (5)... Followed roller, (6)... LED holder, (7)... LED array, (8)... Short focus lens row, ( 9)... Exposure device, (10)... One side wall, (12)... Other side wall, <13)... Opening, (14)... Mounting plate,
(18) Recording paper.

Claims (1)

【特許請求の範囲】 1、透明基体とその上に形成された透明導電層および光
導電体層とを含みかつ所定方向に移動する感光体と、感
光体の透明基体側に配置されかつ透明基体および透明導
電層を通して光導電体層を露光するための露光用光源と
を備える像形成装置において、 前記露光用光源は、その一端が装置本体のシャーシの一
側壁に着脱可能に固着され、他端が他側壁に開設されて
いる開口に着脱可能に装着された取付板に固着されてお
り、前記開口は前記感光体が通過し得る広さを有してい
ることを特徴とする像形成装置。 2、露光用光源および感光体は、装置本体に対して各別
に着脱可能に装着されている請求項1記載の像形成装置
[Scope of Claims] 1. A photoreceptor that includes a transparent substrate, a transparent conductive layer and a photoconductor layer formed thereon, and that moves in a predetermined direction, and a transparent substrate that is disposed on the transparent substrate side of the photoreceptor. and an exposure light source for exposing the photoconductor layer through the transparent conductive layer, wherein the exposure light source has one end removably fixed to one side wall of a chassis of the apparatus main body, and the other end of the exposure light source. is fixed to a mounting plate that is removably attached to an opening formed in the other side wall, and the opening has a width that allows the photoreceptor to pass through. 2. The image forming apparatus according to claim 1, wherein the exposure light source and the photoreceptor are each detachably attached to the apparatus main body.
JP1006537A 1989-01-13 1989-01-13 Image forming device Expired - Fee Related JP2730947B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1006537A JP2730947B2 (en) 1989-01-13 1989-01-13 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1006537A JP2730947B2 (en) 1989-01-13 1989-01-13 Image forming device

Publications (2)

Publication Number Publication Date
JPH02186366A true JPH02186366A (en) 1990-07-20
JP2730947B2 JP2730947B2 (en) 1998-03-25

Family

ID=11641098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1006537A Expired - Fee Related JP2730947B2 (en) 1989-01-13 1989-01-13 Image forming device

Country Status (1)

Country Link
JP (1) JP2730947B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622612U (en) * 1985-06-21 1987-01-09
JPS62136668A (en) * 1985-12-10 1987-06-19 Fujitsu Ltd Image recording device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622612U (en) * 1985-06-21 1987-01-09
JPS62136668A (en) * 1985-12-10 1987-06-19 Fujitsu Ltd Image recording device

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