JPH0361943B2 - - Google Patents
Info
- Publication number
- JPH0361943B2 JPH0361943B2 JP58040562A JP4056283A JPH0361943B2 JP H0361943 B2 JPH0361943 B2 JP H0361943B2 JP 58040562 A JP58040562 A JP 58040562A JP 4056283 A JP4056283 A JP 4056283A JP H0361943 B2 JPH0361943 B2 JP H0361943B2
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- light
- platen
- blocker
- lens
- 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.)
- Expired - Lifetime
Links
- 239000000126 substance Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Projection-Type Copiers In General (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
【発明の詳細な説明】
本発明は、複写機に用いられる全面露光方式の
露光装置における照明装置に関するものであり、
特に、特開昭55−115058号公報に示されるような
内面が高度に拡散させて反対させる物質が塗布さ
れた密閉ハウジングをもちいるものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an illumination device in a full exposure type exposure device used in a copying machine.
In particular, it concerns the use of a closed housing whose inner surface is coated with a highly diffusing and reversing substance, as shown in Japanese Patent Application Laid-Open No. 55-115058.
従来、この種の照明装置としては、上部にプラ
テンを、下部にレンズを備えた密閉ハウジングの
側壁にランプを設け、ランプの上部にランプカバ
を設けてランプの光がオペレータの目に直接入る
ことを防止すると共に、ランプとレンズとの間に
平板状のブロツカーを設けて、ランプの光がレン
ズに直接入ることを防止するようにした装置が知
られている。 Conventionally, this type of lighting device has a lamp mounted on the side wall of a closed housing with a platen on the top and a lens on the bottom, and a lamp cover on the top of the lamp to prevent the light from the lamp from directly entering the operator's eyes. A device is known in which a flat blocker is provided between the lamp and the lens to prevent the light from the lamp from directly entering the lens.
しかし、この装置であるとランプの光の一部が
平板状のブロツカーによつて遮光され、プラテン
への照射光量が低下し原稿の背景部によつてはブ
ロツカーの影がコピーに生じるため従来はブロツ
カーの半透明としていたので、照明効率が悪いと
の不具合を有する。 However, with this device, part of the light from the lamp is blocked by the flat blocker, reducing the amount of light irradiated to the platen, and depending on the background of the original, the shadow of the blocker may appear on the copy. Since Brotzker was semi-transparent, it had the problem of poor lighting efficiency.
本発明は、上記の事情に鑑みなされたものであ
り、その目的は、レンズにランプの光が直接入る
ことを防止できると共に、ランプの光を均一にむ
らなくプラテンに照射できて照明効率を向上した
複写機の全面露光装置における照明装置を提供す
ることである。 The present invention was made in view of the above circumstances, and its purpose is to prevent lamp light from directly entering the lens, and to improve illumination efficiency by irradiating the platen with uniform lamp light. An object of the present invention is to provide an illumination device for a full-surface exposure device of a copying machine.
以下図面を参照して本発明の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第1図は一部破断斜視図であり、ハウジングA
は底壁1と左右・前後側壁2,3,4,5とによ
り上方が開口した筐形状となり、上方開口6には
プラテン7が設けられて密閉してある。 FIG. 1 is a partially cutaway perspective view of the housing A.
The bottom wall 1 and the left and right/front and rear side walls 2, 3, 4, and 5 form a housing with an upper opening, and the upper opening 6 is sealed with a platen 7 provided therein.
前記底壁1の略中央には取付孔8が形成され、
該取付孔8にはレンズ9が取付けてあると共に、
左側壁2にはランプカバ10、ランプ11、リフ
レクター12が上下方向に間隔を置いて順次配設
してあり、ランプ11の光がランプカバ10でプ
ラテン7に直接照射されることを防止してオペレ
ータの目に直接光が入ることがないようにしてあ
る。 A mounting hole 8 is formed approximately in the center of the bottom wall 1,
A lens 9 is attached to the attachment hole 8, and
On the left side wall 2, a lamp cover 10, a lamp 11, and a reflector 12 are arranged in order at intervals in the vertical direction, and the lamp cover 10 prevents the light of the lamp 11 from being directly irradiated onto the platen 7. It is designed to prevent direct light from entering the eyes.
前記底壁1におけるレンズ9とランプ11との
間にはブロツカー13が設けられ、該ブロツカー
13は取付縦材(スタンド)14の両側面14
a,14aに、光反射板となる横板15を上下方
向に間隔を置いて水平面に沿つて複数設けたもの
であり、具体的には、横板15の端部折曲片15
aをボルト16で取付縦板14の両側面14a,
14aに締付け固定され、取付角度を変更できる
ようにしてあると共に、横板15の表面には高度
に拡散させて反射させる物質が塗布してある。 A blocker 13 is provided between the lens 9 and the lamp 11 on the bottom wall 1, and the blocker 13 is attached to both sides 14 of the mounting vertical member (stand) 14.
a, 14a, a plurality of horizontal plates 15 serving as light reflecting plates are provided along the horizontal plane at intervals in the vertical direction, and specifically, bent pieces 15 at the ends of the horizontal plates 15
a with bolts 16 on both sides 14a of the vertical plate 14,
It is fastened to the horizontal plate 14a so that the mounting angle can be changed, and the surface of the horizontal plate 15 is coated with a highly diffusive and reflective material.
なお、前記各側壁2,3,4,5の内面にも高
度に拡散させて反射させる物質が塗布してある。 Incidentally, the inner surfaces of each of the side walls 2, 3, 4, and 5 are also coated with a highly diffusive and reflective substance.
しかして、第3図に示すように、ランプ11の
光の一部は斯横板15に照射されてプラテン7に
向けて反射されるので、レンズ9に直接入ること
がないと共に、ブロツカー13で遮光されること
なくプラテン7に向けて照射されるから、ランプ
11の光をプラテン照射に有効利用できて照明効
率を向上できる。 As shown in FIG. Since the light is irradiated toward the platen 7 without being blocked, the light from the lamp 11 can be effectively used for irradiating the platen, and the illumination efficiency can be improved.
また、横板15の取付角度を変更すれば、反射
方向を変更できるから、プラテン7の光量不足し
ている部分に光を照射することができる。 Further, by changing the mounting angle of the horizontal plate 15, the reflection direction can be changed, so that a portion of the platen 7 where the amount of light is insufficient can be irradiated with light.
本発明は以上詳述したようになるので、従来の
全面露光型の複写機がランプから直接レンズ方向
に向う光については単一のブロツカーで遮光しつ
つランプ側へ拡散反射していたのと比較して、次
のようなすぐれた効果を有する:
単一ブロツカーによるものは、いつたんラン
プ側へ拡散反射させ、かつこれを更にプラテン
側の照射に利用していたため光の反射による減
衰ないしロスが多い構造であつたが、本願発明
ではランプからの光は最小限の反射回数でプラ
テン側へ指向されるから、光の反射過程におけ
る減衰ないしロスが少ない利点がある;
上下方向に間隔をおいた複数のブロツカーで
拡散反射させるため、単一のブロツカーによる
ものと違つて一部的に照度が高くなる度合が少
なく、光はより分散して拡散反射される;
複数のブロツカーよりなるから、プラテンへ
の拡散反射の露光ムラをキメ細かく調整できる
効果がある。 As the present invention has been described in detail above, it is compared to a conventional full-exposure type copying machine in which light directed directly from the lamp toward the lens is blocked by a single blocker and diffusely reflected toward the lamp. It has the following excellent effects: With a single blocker, the light is diffusely reflected back to the lamp side, and this is then used to illuminate the platen side, so there is no attenuation or loss due to light reflection. However, in the present invention, the light from the lamp is directed toward the platen side with a minimum number of reflections, so there is an advantage that there is less attenuation or loss in the light reflection process; Since the light is diffusely reflected by multiple blockers, the illuminance is less likely to be high in some areas than with a single blocker, and the light is more dispersed and diffusely reflected; This has the effect of finely adjusting exposure unevenness due to diffuse reflection.
図面は本発明の実施例を示すものであり、第1
図は一部破断斜視図、第2図はブロツカーの斜視
図、第3図は動作説明図である。
Aはハウジンク、7はプラテン、9はレンズ、
10はランプカバ、11はランプ、13はブロツ
カー、15は光反射板。
The drawings show embodiments of the present invention.
The figure is a partially cutaway perspective view, FIG. 2 is a perspective view of the blocker, and FIG. 3 is an explanatory diagram of the operation. A is the housing, 7 is the platen, 9 is the lens,
10 is a lamp cover, 11 is a lamp, 13 is a blocker, and 15 is a light reflecting plate.
Claims (1)
内面が高度に拡散されて反射させる物質が塗布さ
れた密閉ハウジングAの側部に、ランプ11およ
びそのランプカバー10を設けて、ランプ11の
光がプラテン7に直接照射されないように構成
し、前記ハウジングAの下部におけるレンズ9と
ランプ11との間に、表面が高度に拡散させて反
射させる物質が塗布された光反射板15を上下方
向に間隔を置いて複数備えたブロツカー13を設
けたことを特徴とする複写機の全面露光装置にお
ける照射装置。1 Equipped with a platen 7 at the top and a lens 9 at the bottom,
A lamp 11 and its lamp cover 10 are provided on the sides of the closed housing A, the inner surface of which is coated with a highly diffused and reflective substance, so that the light from the lamp 11 is not directly irradiated onto the platen 7, and the above-mentioned A blocker 13 is provided between the lens 9 and the lamp 11 in the lower part of the housing A, and the blocker 13 includes a plurality of light reflecting plates 15 whose surfaces are coated with a highly diffusive and reflective material at intervals in the vertical direction. An irradiation device in a full-surface exposure device of a copying machine, characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4056283A JPS59166933A (en) | 1983-03-14 | 1983-03-14 | Illuminating device in full-surface exposing device of copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4056283A JPS59166933A (en) | 1983-03-14 | 1983-03-14 | Illuminating device in full-surface exposing device of copying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59166933A JPS59166933A (en) | 1984-09-20 |
JPH0361943B2 true JPH0361943B2 (en) | 1991-09-24 |
Family
ID=12583899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4056283A Granted JPS59166933A (en) | 1983-03-14 | 1983-03-14 | Illuminating device in full-surface exposing device of copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59166933A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59224834A (en) * | 1983-05-23 | 1984-12-17 | Fuji Xerox Co Ltd | Optical system device of electrophotographic copying machine or the like |
JPS61121048A (en) * | 1984-11-19 | 1986-06-09 | Fuji Xerox Co Ltd | Exposure device of copying machine |
JPS61160735A (en) * | 1985-01-10 | 1986-07-21 | Fuji Xerox Co Ltd | Exposing device of copying machine |
JPS61121446U (en) * | 1985-01-16 | 1986-07-31 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115058A (en) * | 1979-02-26 | 1980-09-04 | Xerox Corp | Illuminator for copier |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51160533U (en) * | 1974-07-19 | 1976-12-21 |
-
1983
- 1983-03-14 JP JP4056283A patent/JPS59166933A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115058A (en) * | 1979-02-26 | 1980-09-04 | Xerox Corp | Illuminator for copier |
Also Published As
Publication number | Publication date |
---|---|
JPS59166933A (en) | 1984-09-20 |
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