JPS6247667A - Lighting device - Google Patents
Lighting deviceInfo
- Publication number
- JPS6247667A JPS6247667A JP18813885A JP18813885A JPS6247667A JP S6247667 A JPS6247667 A JP S6247667A JP 18813885 A JP18813885 A JP 18813885A JP 18813885 A JP18813885 A JP 18813885A JP S6247667 A JPS6247667 A JP S6247667A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- image carrier
- image
- irradiated
- 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.)
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- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電子写真式複写機、プリンタなどの静電写真
プロセスを利用した画像形成装置、とくに変倍タイプの
画像形成装置および編集機能を有する画像形成装置に用
いるのに適した照明装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image forming apparatus using an electrostatic photographic process such as an electrophotographic copying machine or a printer, particularly a variable magnification type image forming apparatus and an editing function. The present invention relates to a lighting device suitable for use in an image forming apparatus having the present invention.
（従来の技術）
従来、上記画像形成装置における像担持体上の不要な電
荷を除電するための照明装置としては、像担持体の表面
と対面するように、ＬＥＤ等の発光素子を複数配列して
おき、これらを必要に応じて点灯して、変倍や編集等に
よって生じる非画像領域の除電を行なうものがある。上
記発光素子としてのＬＥＤは、例えば透明円筒状の部分
と照射側先端の凸レンズ状集光部とからなっている。(Prior Art) Conventionally, as an illumination device for eliminating unnecessary charges on an image carrier in the image forming apparatus, a plurality of light emitting elements such as LEDs are arranged so as to face the surface of the image carrier. There are some devices in which these lights are turned on as needed to eliminate static from non-image areas caused by scaling, editing, etc. The LED as the light emitting element includes, for example, a transparent cylindrical portion and a convex lens-shaped condensing portion at the tip on the irradiation side.
しかし、斯かる従来技術の場合には、ＬＥＤの円筒状部
から照射される光束の一部が画像領域に侵入して、画像
領域と変倍や編集等によって生じる非画像領域との境界
を１曖昧にし、境界近傍の画像を不鮮明にして画質の劣
化をおこすという問題点があった。However, in the case of such conventional technology, a part of the light beam emitted from the cylindrical part of the LED enters the image area, and the boundary between the image area and the non-image area created by scaling, editing, etc. There is a problem in that the image becomes vague and the image near the boundary becomes unclear, resulting in deterioration of image quality.
そこで、本出願人は、上記従来技術の問題点を解決する
ため、特願昭６０−１８０９５号公報に示すような照明
装置を既に提案した。これは、第８図（ａ） 、 （ｂ
）に示すように、透明な合成樹脂等のモールド１６に発
光チップ１５を埋設したＬＥＤ２３と、発光チップ１５
からの光が像担持体６上を矩形状に照明するように光の
一部を遮る遮光部材１３と、レンズ部材１４と、該レン
ズ部材１４を透過した後の光束を遮るスリット部材１７
とから構成されている。Therefore, the present applicant has already proposed a lighting device as shown in Japanese Patent Application No. 18095/1983 in order to solve the problems of the above-mentioned prior art. This is shown in Figure 8 (a) and (b
), the LED 23 has a light-emitting chip 15 embedded in a mold 16 made of transparent synthetic resin, etc., and the light-emitting chip 15
A light shielding member 13 that blocks part of the light so that the light illuminates the image carrier 6 in a rectangular shape, a lens member 14, and a slit member 17 that blocks the light beam after passing through the lens member 14.
It is composed of.
この提案装置にあっては、発光チップ１５から放射され
た光を遮光部材１３によって矩形状に遮ると共に、レン
ズ部材１４にて光束を絞って像担持体上を照明するため
１画像領域と非画像領域との境界で、除電用の光束をシ
ャープに切ることができ、この境界近傍の画質の劣化を
防止することができる。さらに、スリット部材１７を設
けることにより次のような効果を有している。すなわち
、ＬＥＤ２３は多数直線状に配列されているが、各ＬＥ
Ｄ２３は個別に配置されているため、各ＬＥＤ２３の位
置が第９図に示すように配列と直交する方向にばらつく
と、第１０図に示すように、各ＬＥＤ２３によって照射
される領域が配列と直交する方向にずれてしまい、照射
光によって除電される部分の端縁が直線状とならずに凹
凸が生じる。そこで、スリット部材１７によってＬＥＤ
２３の配列方向と直交する方向の照”射光のばらつきを
遮り、第１１図に示すように、配列方向に沿った互いに
平行な直線状の端縁を有する照射光を常に得ることがで
きるようになっている。In this proposed device, the light emitted from the light emitting chip 15 is blocked by the light shielding member 13 in a rectangular shape, and the light beam is focused by the lens member 14 to illuminate the image carrier. The luminous flux for static elimination can be sharply cut at the boundary with the area, and deterioration of image quality near this boundary can be prevented. Furthermore, the provision of the slit member 17 has the following effects. That is, although a large number of LEDs 23 are arranged in a straight line, each LED
Since the D23 are arranged individually, if the position of each LED 23 varies in the direction perpendicular to the array as shown in FIG. 9, the area illuminated by each LED 23 will be perpendicular to the array as shown in FIG. As a result, the edge of the portion where the charge is removed by the irradiation light is not straight and becomes uneven. Therefore, by using the slit member 17, the LED
23 in the direction perpendicular to the arrangement direction, and as shown in FIG. It has become.
（発明が解決しようとする問題点）
しかし、斯かる従来技術の場合には、照射光のばらつき
を防止するためスリット部材が必要となり、部品点数が
増し、組立て工数が増すのみならず、光束を遮ることに
より光量が低下するという問題点がある。(Problem to be solved by the invention) However, in the case of such conventional technology, a slit member is required to prevent variations in the irradiated light, which not only increases the number of parts and assembly man-hours, but also reduces the luminous flux. There is a problem in that the amount of light decreases due to blocking.
そこで、本発明は、上記従来技術の問題点を解決するた
めになされたもので、その目的とするところは、スリッ
ト部材を用いることなく照射光のばらつきを防止するこ
とができ、部品点数の低減が可謝であると共に、レンズ
部材を透過した光束を全て有効に利用することができる
照明装置を提供することにある。Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and its purpose is to prevent variations in irradiated light without using a slit member, and to reduce the number of parts. It is an object of the present invention to provide an illumination device that is flexible and can effectively utilize all the luminous flux transmitted through a lens member.
（問題点を解決するための手段）
本発明は、上記の目的を達成するために、像担持体の表
面と対面するように配置され、該像担持体上を照明する
ことにより、像担持体上の不要な電荷の除電を行なうた
めの照明装置において、直線状に複数配置される発光素
子と、゛該各発光素子から照射される光が像担持体上を
矩形状に照明するように光の一部を遮る遮光部材と、少
なくとも遮光部材より像担持体側に配設されるレンズ部
材とを備え、前記各発光素子の同一の基板上に一体的に
固着するように構成されている。(Means for Solving the Problems) In order to achieve the above object, the present invention is arranged so as to face the surface of an image carrier, and by illuminating the image carrier, The above lighting device for removing unnecessary charges includes a plurality of light emitting elements arranged in a straight line, and a light emitting element arranged so that the light emitted from each light emitting element illuminates an image carrier in a rectangular shape. The light-emitting element includes a light-shielding member that blocks a portion of the light-emitting element, and a lens member that is disposed at least closer to the image carrier than the light-shielding member, and is configured to be integrally fixed onto the same substrate of each of the light-emitting elements.
（実施例）
以下に本発明を図示の実施例に基づいて説明する。第１
２図には本発明に係る照明装Ｍ１を適用した画像形成装
置２が示されており、以下その構成について説明すると
、３は原稿、４は原稿３を照明するための原稿ランプ、
５は複数枚組合されたミラーやレンズ等からなる結像光
学系である。(Example) The present invention will be explained below based on the illustrated example. 1st
FIG. 2 shows an image forming apparatus 2 to which an illumination device M1 according to the present invention is applied, and its configuration will be described below. 3 is a document; 4 is a document lamp for illuminating the document 3;
Reference numeral 5 denotes an imaging optical system consisting of a plurality of mirrors, lenses, and the like.
６は円筒状に形成された像担持体で、第１２図の矢印ａ
方向に回動可能に軸支されており、この像担持体６の周
囲には、−成帯電器７、現像器８、転写帯電器９、クリ
ーナー１０が配設されている０本発明に係る照明装置ｌ
は、像担持体６の周囲にあって、−成帯電器７と現像器
８の間に配設される。また、像担持体６の周りには、定
着装置等が配置されているが、説明の便宜上省略した。Reference numeral 6 denotes an image carrier formed in a cylindrical shape, which is indicated by the arrow a in FIG.
The image bearing member 6 is rotatably supported in a direction, and a negative charger 7, a developer 8, a transfer charger 9, and a cleaner 10 are arranged around the image carrier 6. lighting device l
is disposed around the image carrier 6 and between the negative charger 7 and the developer 8 . Further, a fixing device and the like are arranged around the image carrier 6, but these are omitted for convenience of explanation.
図中、１１は転写材である。In the figure, 11 is a transfer material.
この画像形成装置２は、−成帯電器７によって一様に帯
電された像担持体６の表面に、結像光学系５を介して原
稿３の像を結像し、静電潜像を形成する。しかして、こ
の静電Ｗｌ像を現像器８により可視化し、像担持体６上
の可視像を転写帯電器９によって転写材１１に転写して
、定着装置において定着画像とするものである。This image forming apparatus 2 forms an image of a document 3 via an imaging optical system 5 on the surface of an image carrier 6 that is uniformly charged by a negative charger 7, thereby forming an electrostatic latent image. do. Then, this electrostatic Wl image is visualized by a developing device 8, and the visible image on the image carrier 6 is transferred to a transfer material 11 by a transfer charger 9, and a fixed image is formed in a fixing device.
また、上記画像形成装置２は、結像光学系５のレンズの
位置を調節することにより、同大の原稿３から大きさを
異にするコピーが得られる。いわゆる変倍タイプの画像
形成装置となっている。なお、変倍はｙｔ階的に行なわ
れるものであっても、連続的に行なわれるものであって
もよい。Further, the image forming apparatus 2 can obtain copies of different sizes from the original 3 of the same size by adjusting the position of the lens of the imaging optical system 5. This is a so-called variable magnification type image forming apparatus. Incidentally, the scaling may be performed in a yt stepwise manner or may be performed continuously.
この場合、第１図（ａ）に示すように、複写倍率によっ
て、像担持体６の有効画像領域幅に対して、図示の場合
Ａが′ＥＩ像望城となっており、該画像領域Ａに隣接し
た側縁の領域Ｂの部分は非画像領域となっている。In this case, as shown in FIG. 1(a), depending on the copying magnification, A is the 'EI image viewing area in the illustrated case with respect to the effective image area width of the image carrier 6, and the image area A is The adjacent side edge area B is a non-image area.
前記照明装置ｌは、像担持体６の表面と対面とするよう
に、軸方向全幅にわたって多数配列されており、静電潜
像が現像される前に像担持体６上を照明して、非画像領
域Ｂの電荷を除去するものである。この照明装置工は、
第１図乃至第３図に示すように、発光素子１５と遮光部
材１３と、レンズ部材１４とからなっている。A large number of the illumination devices 1 are arranged across the entire width in the axial direction so as to face the surface of the image carrier 6, and illuminate the image carrier 6 before the electrostatic latent image is developed. This is to remove charges in image area B. This lighting equipment engineer
As shown in FIGS. 1 to 3, it consists of a light emitting element 15, a light shielding member 13, and a lens member 14.
上記発光素子１５はＬＥＤの発光チップからなり、この
発光チップ１５は細長いプリント基板１２上にダイレク
トポンディングにより一定間隔で直線状に固着配列され
てＬＥＤアレイを形成している。ここで、発光チップの
位置は、ダイレクトポンディングによる取付は精度によ
り、たとえばＬＥＤランプを個別に配列するよりも高い
位置精度が得られる。したがって１発光チップの配列方
向と直交する方向のばらつきは非常に小さくなっている
。また、遮光部材１３及びレンズ部材１４も発光チップ
１５と１対１で対応するように配列された遮光部材アレ
イ１８及びレンズアレイ１９となっている。The light emitting elements 15 are composed of LED light emitting chips, and the light emitting chips 15 are fixedly arranged in a straight line at regular intervals on the elongated printed circuit board 12 by direct bonding to form an LED array. Here, the position of the light-emitting chip depends on the accuracy of attachment by direct bonding, and higher positional accuracy can be obtained than, for example, when individually arranging LED lamps. Therefore, variations in the direction perpendicular to the arrangement direction of one light emitting chip are extremely small. Further, the light shielding member 13 and the lens member 14 are also arranged as a light shielding member array 18 and a lens array 19 in one-to-one correspondence with the light emitting chips 15.
上記遮光部材アレイ１８は、合成樹脂等によって光を遮
るよう黒色の枠体状に形成された遮光部材１３を直線状
に一体的に配列してなっている。The light shielding member array 18 is formed by integrally arranging light shielding members 13 formed in a black frame shape in a linear manner so as to block light using synthetic resin or the like.
各遮光部材１３は側壁部２０と内向フランジ部２１から
なり、遮光部材の先端には矩形状の開口部会２が形成さ
れている。なお、ここで必ずしも内向フランジ部は必要
ではなく、第１図（Ｃ）のような形状でも矩形状の開口
が形成されていれば良い、遮光部材アレイ１８は、各遮
光部材１３内の所定位置に発光チップ１５を収納した状
態で、ＬＥＤアレイのプリント基板１２に固着される。Each light shielding member 13 consists of a side wall portion 20 and an inward flange portion 21, and a rectangular opening 2 is formed at the tip of the light shielding member. Note that the inward flange portion is not necessarily required here, and it is sufficient that a rectangular opening is formed even in the shape shown in FIG. The light emitting chip 15 is fixed to the printed circuit board 12 of the LED array with the light emitting chip 15 housed therein.
また、レンズアレイ１９は、アクリル等の合成樹脂やガ
ラスなどからなる凸レンズであるレンズ部材１４を、第
３図に示すように、直線状に配列して一体的に形成した
ものである。このレンズアレイ１９は、各レンズ部材１
４の光軸Ｃが遮光部材１３の開口部２２の中心を通るよ
うに、遮光部材アレイ１８の前面に接触して配設される
。その際、もちろんのことなからＬＥＤアレイの発光チ
ップ１５は光軸Ｃ上に位置している。上記レンズ部材１
４は、遮光部材１３の開口部２２から照射される光束の
広がり角θを小さくして像担持体６上に照射するもので
あり、像担持体６上に照射された光の照度を高めると共
に、レンズ部材１４と像担持体６との間隔Ｌ７を大きく
して、像担持体６の周囲に浮遊するトナー等がレンズ部
材１４に付着することによる光量低下を防ぐもの埜ある
。Further, the lens array 19 is formed by integrally forming lens members 14, which are convex lenses made of synthetic resin such as acrylic, glass, or the like, arranged in a straight line as shown in FIG. This lens array 19 includes each lens member 1
The light shielding member array 18 is disposed in contact with the front surface of the light shielding member array 18 so that the optical axis C of the light shielding member array 18 passes through the center of the opening 22 of the light shielding member 13. At this time, the light emitting chip 15 of the LED array is of course located on the optical axis C. The above lens member 1
4 is for reducing the spread angle θ of the light beam irradiated from the opening 22 of the light shielding member 13 and irradiating it onto the image carrier 6, increasing the illuminance of the light irradiated onto the image carrier 6 and There is a method of increasing the distance L7 between the lens member 14 and the image carrier 6 to prevent a decrease in the amount of light due to toner or the like floating around the image carrier 6 adhering to the lens member 14.
なお、遮光部材１３の開口部２２の大きさ、発光チップ
１５からレンズ部材１４までの光路長など各部の寸法は
、像担持体６上を所定の条件で照射するように設定する
必要がある。ちなみに、波ｉ６１０ｎｍのＬＥＤの発光
チップを用い、レンズ部材１４の材質として屈折率的１
．５のアクリルを用いた場合、各部の寸法の一例として
は第４図及び第５図に示すようになる。各発光チップ１
５間の間隔Ｌｌ ＝２．５ ｓｖ、発光チップ１５から
レンズ部材１４までの光路長Ｌ２ ＝２．Ｏｍ層、開口
部２２の大きさ縦し５＝１．８層層、横Ｌ６ ＝１．４
ｍ層、レンズ部材１４の曲率半径Ｒ＝ ２．３ｉ＋層
、厚さＴ ＝ １．４ＩＩ１１、レンズ部材１４と像担
持体６との間隔Ｌ７＝２．０〜３．０ ｍ層、である。Note that the dimensions of each part, such as the size of the opening 22 of the light shielding member 13 and the length of the optical path from the light emitting chip 15 to the lens member 14, must be set so that the image carrier 6 is irradiated under predetermined conditions. By the way, using an LED light emitting chip with a wave i of 610 nm, the material of the lens member 14 has a refractive index of 1.
．． When acrylic material No. 5 is used, an example of the dimensions of each part is shown in FIGS. 4 and 5. Each light emitting chip 1
5 = 2.5 sv, and the optical path length L2 from the light emitting chip 15 to the lens member 14 = 2.5 sv. Om layer, size of opening 22 vertical 5 = 1.8 layers, horizontal L6 = 1.4
m layers, radius of curvature R of lens member 14 = 2.3i+ layer, thickness T = 1.4II11, distance L7 between lens member 14 and image carrier 6 = 2.0 to 3.0 m layers.
以上の構成において、本発明に係る照明装置では、次の
ようにして像担持体表面の照明が行なわ、れる、すなわ
ち１発光チー２ブ１５より放射された光束は、遮光部材
工３により遮れて開口部２２のみから矩形状となって照
射され、この照射光束は、レンズ部材１４によって広が
り角θを小さく絞られ、発光チップ１５の配列方向に沿
った互いに平行な直線状の端縁を有する照射光となって
、像担持体６上に矩形状に照射される。なお、発光チッ
プ１５と発光チップ１５との間には、遮光部材１３の側
壁部２０が存在するため、１つの発光チップ１５からの
光が、隣接する遮光部材１３側に漏れて、隣接する発光
チップ１５に対応したレンズ部材１４に入射することは
ない。In the above configuration, in the illumination device according to the present invention, the surface of the image carrier is illuminated as follows. That is, the light beam emitted from the first light emitting chip 2 is blocked by the light shielding member 3. This irradiation light beam is irradiated only from the opening 22 in a rectangular shape, and this irradiation light beam is narrowed down to a small spread angle θ by the lens member 14, and has linear edges parallel to each other along the arrangement direction of the light emitting chips 15. The irradiation light is irradiated onto the image carrier 6 in a rectangular shape. Note that since the side wall portion 20 of the light shielding member 13 exists between the light emitting chips 15, the light from one light emitting chip 15 leaks to the adjacent light shielding member 13 side, and the light from the adjacent light emitting chip 15 leaks to the adjacent light shielding member 13 side. The light does not enter the lens member 14 corresponding to the chip 15.
このように、 発１ｖアＩ５から放射された光束は、遮
光部材１３によって矩形状の光束に整形された後、レン
ズ部材１４により広がり角θを小さく絞られ、互いに平
行な直線状の端縁を有する帯状となって像担持体６上に
高い照度で矩形状に照射され、他の光束はいっさい像担
持体６上に到達しない、そのため、像担持体６の表面は
、遮光部材１３の開口部２２と相似の矩形状に照明され
、それ以外の部分には光がまったく照射されない。In this way, the light beam emitted from the light source I5 is shaped into a rectangular light beam by the light shielding member 13, and then narrowed down by the lens member 14 to a small spread angle θ, forming straight edges parallel to each other. The image carrier 6 is illuminated in a rectangular shape with high illuminance, and no other light beams reach the image carrier 6. Therefore, the surface of the image carrier 6 is exposed to the opening of the light shielding member 13. It is illuminated in a rectangular shape similar to 22, and no other parts are illuminated with light at all.
したがって、各発光チップ１５が照明する領域り、Ｅが
、第６図に示すように、互いに隙間なく隣接するよう各
発光チップ１５．遮光部材１３及びレンズ部材１４の位
置や形状を設定することにより、像担持体６表面の光量
分布は、第７図に示すように１画像領域Ａには光がもれ
ず、非画像領域Ｂだけをシャープに高い照度で照明する
ことができ、光量分布における谷の部分の光量でも像担
持体６を除電するのに必要なレベルより高いので、非画
像領域Ｂは均一に除電される。なお、隣接する発光チッ
プ１５が照明する領域は互いに重なり合うようにしても
よい。Therefore, each light emitting chip 15 . By setting the positions and shapes of the light shielding member 13 and the lens member 14, the light amount distribution on the surface of the image carrier 6 is such that no light leaks into one image area A and only the non-image area B, as shown in FIG. can be sharply illuminated with high illuminance, and even the light intensity at the valley portion of the light intensity distribution is higher than the level required to neutralize the image carrier 6, so that the non-image area B is uniformly neutralized. Note that the regions illuminated by adjacent light emitting chips 15 may overlap each other.
なお、図示の実施例では、像担持体６上にあって画像領
域Ａの一側にのみ非画像領域Ｂが存在する場合について
説明したが、像担持体上の画像領域Ａの両側に非画像領
域が存在する場合であっても本実施例を適用できること
勿論である。In the illustrated embodiment, a case has been described in which the non-image area B exists only on one side of the image area A on the image carrier 6, but there is a non-image area B on both sides of the image area A on the image carrier 6. Of course, this embodiment can be applied even when a region exists.
また、本実施例の照明装置は矩形状に照明を行なうもの
であるため、像担持体の軸方向全長にわたって発光素子
を並べ、画像領域を越えた先端部や後端部に対応する像
担持体面を光照射して電荷消去を行なう場合にも使用で
きる。Furthermore, since the illumination device of this embodiment performs illumination in a rectangular shape, the light emitting elements are arranged along the entire length of the image carrier in the axial direction, and the image carrier surface corresponding to the front end and rear end beyond the image area is It can also be used to erase charges by irradiating with light.
さらに１図示の実施例では、縮小倍率によって生じる非
画像領域を除電することに本実施例の照明装置を用いた
場合について説明したが、これに限定されるわけではな
く、本実施例の照明装置を編集機能を有する画像形成装
置に用いても良く。Furthermore, in the embodiment shown in FIG. 1, a case has been described in which the illumination device of this embodiment is used to eliminate static electricity in a non-image area caused by the reduction magnification. However, the illumination device of this embodiment is not limited to this. may be used in an image forming apparatus having an editing function.
この場合には本実施例の照明装置を像担持体の軸方向に
複数並べ１発光素子の発光タイミングを変えることによ
って、像担持体上の画像を消去すべき領域等任意の一部
分を除電するようにしてもよい。In this case, by arranging a plurality of illumination devices of this embodiment in the axial direction of the image carrier and changing the light emission timing of one light emitting element, it is possible to eliminate static electricity from any part of the image carrier, such as the area where the image is to be erased. You can also do this.
（発明の効果）
本発明は以上の構成及び作用よりなるもので、発光素子
から照射される光を矩形、状の照射光となるように遮光
部材によって遮ると共にレンズ部材によって絞り、像担
持体上に照射するものであって、各発光素子を同一の基
板に一体的に固着するようにしたので、直線状に配列さ
れる発光チップを配列方向と直交する方向にばらつきな
く精度よく配置することができ、従来のようにスリット
部材を用いることなく、照射光の配列方向と直交する方
向のばらつきを確実に防止することができ、部品点数を
低減できると共に、レンズ部材を通った光束を有効に利
用できる。(Effects of the Invention) The present invention has the above-described configuration and operation, and the light emitted from the light emitting element is blocked by the light shielding member so as to become a rectangular shaped irradiation light, and the light is condensed by the lens member, and the light is focused on the image carrier. Since each light-emitting element is integrally fixed to the same substrate, the light-emitting chips arranged in a straight line can be arranged accurately without variation in the direction perpendicular to the arrangement direction. This makes it possible to reliably prevent variations in the direction perpendicular to the arrangement direction of the irradiated light without using a slit member as in the past, reducing the number of parts and effectively utilizing the light flux passing through the lens member. can.
第１図（ａ）は本発明に係る照明装置の使用状態を示す
縦断面図、第１図（ｂ）は第１図（ａ）のＩ −Ｉ線・
新面′ｉ図、第１図（ｃ）は遮光部材の他例を示す断面
図、第２図は同照明装置のレンズ部材を取り除いた状態
を示す平面図、第３図はレンズアレイを示す斜視図、第
４図は照明装置の各部の寸法を示す断面図、第５図は同
平面図、第６図は照明装置の光の照射状態を示す斜視図
、第７図は同照明装置の光量分布特性を示すグラフ、第
８図（ａ）は従来の照明装置の使用状態を示す縦断面図
、第８図（ｂ）は第８図（ａ）の■−■線断面図、第９
図はＬＥＤの配列状態を示す平面図、第１０図は第９図
の状態における光の照射領域を示す斜視図、第ｉｔ図は
スリット部材の作用を示す斜♂見図、第１２図は画像形
成装置を示す概略図である。
符号の説明
！・・・照明装置 １２・・・プリント基板１３
・・・遮光部材 １４・・・レンズ部材１５・・・
発光素子FIG. 1(a) is a vertical cross-sectional view showing the usage state of the lighting device according to the present invention, and FIG.
Figure 1(c) is a sectional view showing another example of the light shielding member, Figure 2 is a plan view showing the illumination device with the lens member removed, and Figure 3 shows the lens array. 4 is a sectional view showing the dimensions of each part of the lighting device, FIG. 5 is a plan view of the same, FIG. 6 is a perspective view showing the state of light irradiation of the lighting device, and FIG. 7 is a diagram of the lighting device. Graph showing the light quantity distribution characteristics, FIG. 8(a) is a vertical cross-sectional view showing the usage state of the conventional lighting device, FIG. 8(b) is a cross-sectional view taken along the line ■-■ of FIG. 8(a), and FIG.
10 is a perspective view showing the light irradiation area in the state shown in FIG. 9, FIG. 1 is a perspective view showing the action of the slit member, and FIG. 12 is an image. It is a schematic diagram showing a forming device. Explanation of symbols! ... Lighting device 12 ... Printed circuit board 13
... Light shielding member 14 ... Lens member 15 ...
light emitting element
Claims (1)
上を照明することにより、像担持体上の不要な電荷の除
電を行なうための照明装置において、直線状に複数配置
される発光素子と、該各発光素子から照射される光が像
担持体上を矩形状に照明するように光の一部を遮る遮光
部材と、少なくとも遮光部材より像担持体側に配設され
るレンズ部材とを備え、前記各発光素子を同一の基板上
に一体的に固着したことを特徴とする照明装置。In an illumination device that is arranged so as to face the surface of an image carrier, and is used to eliminate unnecessary charges on the image carrier by illuminating the image carrier, a plurality of light emitting lights arranged in a straight line are used. a light-shielding member that blocks part of the light so that the light emitted from each light-emitting element illuminates the image carrier in a rectangular shape; and a lens member disposed at least closer to the image carrier than the light-shielding member. 1. A lighting device comprising: each of the light emitting elements integrally fixed on the same substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18813885A JPS6247667A (en) | 1985-08-27 | 1985-08-27 | Lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18813885A JPS6247667A (en) | 1985-08-27 | 1985-08-27 | Lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6247667A true JPS6247667A (en) | 1987-03-02 |
Family
ID=16218403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18813885A Pending JPS6247667A (en) | 1985-08-27 | 1985-08-27 | Lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6247667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01172878A (en) * | 1987-12-26 | 1989-07-07 | Fuji Xerox Co Ltd | Optical destaticizer |
| JPH0250179A (en) * | 1988-05-25 | 1990-02-20 | Fuji Xerox Co Ltd | Copying device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612620B2 (en) * | 1982-01-22 | 1986-01-27 | Kurosaki Refractories Co | |
| JPS6170564A (en) * | 1984-09-14 | 1986-04-11 | Toshiba Corp | Image forming device |
-
1985
- 1985-08-27 JP JP18813885A patent/JPS6247667A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612620B2 (en) * | 1982-01-22 | 1986-01-27 | Kurosaki Refractories Co | |
| JPS6170564A (en) * | 1984-09-14 | 1986-04-11 | Toshiba Corp | Image forming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01172878A (en) * | 1987-12-26 | 1989-07-07 | Fuji Xerox Co Ltd | Optical destaticizer |
| JPH0250179A (en) * | 1988-05-25 | 1990-02-20 | Fuji Xerox Co Ltd | Copying device |
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