JPS6014227A - Exposing device of copying machine - Google Patents

Exposing device of copying machine

Info

Publication number
JPS6014227A
JPS6014227A JP12302583A JP12302583A JPS6014227A JP S6014227 A JPS6014227 A JP S6014227A JP 12302583 A JP12302583 A JP 12302583A JP 12302583 A JP12302583 A JP 12302583A JP S6014227 A JPS6014227 A JP S6014227A
Authority
JP
Japan
Prior art keywords
lamp light
platen glass
light source
flash lamp
diffuse reflection
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.)
Pending
Application number
JP12302583A
Other languages
Japanese (ja)
Inventor
Junzo Miyamoto
宮本 順三
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP12302583A priority Critical patent/JPS6014227A/en
Publication of JPS6014227A publication Critical patent/JPS6014227A/en
Pending legal-status Critical Current

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  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE:To illuminate uniformly a copying surface by using the reflected light of a lamp light source, by placing plural diffusion reflecting surfaces on the lower part of a platen glass, and also placing a flash lamp light source provided with a blocker on the back, on a position corresponding to said reflecting surface. CONSTITUTION:Diffusion reflecting members 22, 23 whose section is formed in a roughly chevron shape are placed symmetrically on the lower part of a platen glass 21 of an exposing device 20. The illuminating light irradiated from flash lamp light sources 24, 25 placed symmetrically on its inside is led to diffusion reflecting surfaces 22a, 23a by blockers 26, 27, and also this illuminating light is diffused by the reflecting surfaces 22a, 23a and illuminates uniformly the platen glass 21 by the sufficient intensity of illumination.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はフラッジ−ランプ光源を用いた複写機の露光装
置に関し、特に露光装置における照明構造の改良に関す
る。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exposure apparatus for a copying machine using a flood-lamp light source, and more particularly to an improvement in the illumination structure of the exposure apparatus.

〔従来技術〕[Prior art]

一般に、複写機における露光装置のうち、フラッシュラ
ンプ光源(以下単にランプ光源という)を用いた露光装
置にあっては、ランプ光源が非常に短い発光時間に高輝
度な出力で照明するため、複写面を均一に照明すること
が難しい。そこで従来は、第1図に示す露光装置1の要
部破断斜視図のように、プラテンガラス2を支承する筐
体3の四隅にそれぞれランプ光源4を配置し、このラン
プ光源4によってプラテンガラス2の上面に載置された
複写原稿(図示せず)を直接照明し、複写面を均一に照
明するようにしていた。なお、第1図で符号5は筐体3
の底面に配置された投影レンズ、符号6はランプ光源4
の照明光をプラテンガラス2に導くブロッカ−である。
Generally speaking, among exposure devices in copying machines, exposure devices that use a flash lamp light source (hereinafter simply referred to as a lamp light source) illuminate the copy surface with a high brightness output for a very short light emission time. It is difficult to illuminate uniformly. Conventionally, lamp light sources 4 are arranged at each of the four corners of a casing 3 that supports the platen glass 2, as shown in a cutaway perspective view of the main parts of the exposure apparatus 1 shown in FIG. A copy original (not shown) placed on the top surface of the copying device is directly illuminated to uniformly illuminate the copy surface. In addition, the code 5 in FIG. 1 is the housing 3.
The projection lens disposed on the bottom of the lamp light source 4
This is a blocker that guides the illumination light to the platen glass 2.

ところで、第1図に示す露光装置1では、プラテンガラ
ス2にフラッシュランプ4の照明光を直接導く構成であ
るため、プラテンガラス2の上面を覆うプラテンカバー
(図示せず)を開いたままの状態で複写作業を行なうと
、作業者の視覚を著しく刺激するので、この状態では複
写作業が不可能なように設計されている。
By the way, since the exposure apparatus 1 shown in FIG. 1 has a configuration in which the illumination light from the flash lamp 4 is directly guided to the platen glass 2, the platen cover (not shown) that covers the top surface of the platen glass 2 is left open. If copying work is performed in this state, the worker's vision will be severely stimulated, so the design is such that copying work is not possible in this state.

また、上述した問題点を解決するため、第2図の断面図
で示す従来の露光装置10では、プラテンガラス11を
支承した筐体12内ζこ、一本のランプ光源13を配置
し、このランプ光源13の照明光を、ランプ光源13の
上方に配置したブロッカ−14によって高反射キャビテ
ィー15内に導き、このキャビティー15の反射光を複
写面であるプラテンガラス11に導くように構成してい
るが、このランプ光源13の照明光を高反射キャビティ
ー15内に導くにあたり、ランプ光源13の上方にブロ
ッカ−14を配置するため、このブロッカ−14によっ
てランプ光源13直上方のプラテンガラス11に反射光
を導くことが難しく、このため複写面を照明するにあた
り、照度むらを引き起しやすい欠点があった。
In addition, in order to solve the above-mentioned problems, in the conventional exposure apparatus 10 shown in the cross-sectional view of FIG. The illumination light from the lamp light source 13 is guided into a high reflection cavity 15 by a blocker 14 placed above the lamp light source 13, and the reflected light from this cavity 15 is guided to a platen glass 11 which is a copying surface. However, in order to guide the illumination light of this lamp light source 13 into the high reflection cavity 15, a blocker 14 is placed above the lamp light source 13, so this blocker 14 blocks the platen glass 11 directly above the lamp light source 13. It is difficult to guide the reflected light to the surface of the photocopying surface, and this has the disadvantage that it tends to cause uneven illuminance when illuminating the copying surface.

なお、第2図で符号16は投影レンズ、17は感材面、
18はジャマ板で、このジャマ板18はランプ光源13
の直接光が投影レンズ16内に侵入することを防止する
ものである。
In FIG. 2, numeral 16 is a projection lens, 17 is a photosensitive material surface,
Reference numeral 18 is a jammer plate, and this jammer plate 18 is a lamp light source 13.
This prevents direct light from entering the projection lens 16.

〔発明の目的〕[Purpose of the invention]

本発明は上述した問題点に鑑み、ランプ光源の反射光を
用いて複写面を均一に照明し得るようにした複写機の露
光装置を提供することを目的とする。
SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an exposure device for a copying machine that can uniformly illuminate a copying surface using reflected light from a lamp light source.

し発明の構成〕 この目的を達成するために本発明は、プラテンガラスの
下方に複数の拡散反射面を配置するとともに、この複数
の反射面に対応する位置に、それぞれ背面にブロッカ−
を備えたフラッシュランプ光源を配置し、もって、この
ランプ光源の照明光をブロッカ−によってそれぞれ相対
応する拡散反射面に導くとともに、この複数の拡散反射
面の反射光によってプラテンガラス面を照明するように
したものである。
[Structure of the Invention] To achieve this object, the present invention arranges a plurality of diffuse reflection surfaces below the platen glass, and also provides blockers on the back surface at positions corresponding to the plurality of reflection surfaces.
A flash lamp light source equipped with a flash lamp light source is disposed, and the illumination light from the lamp light source is guided by blockers to corresponding diffuse reflection surfaces, and the platen glass surface is illuminated by the reflected light from the plurality of diffuse reflection surfaces. This is what I did.

〔実施例〕〔Example〕

以下、本発明に係る複写機の露光装置の一実施例を詳述
する。
Hereinafter, one embodiment of the exposure apparatus for a copying machine according to the present invention will be described in detail.

第3図は本発明に係る露光装置20を示す要部断面図で
ある。
FIG. 3 is a sectional view of a main part of an exposure apparatus 20 according to the present invention.

この露光装置20では、プラテンガラス21の下方に断
面を略くの字形状に形成した拡散反射部材22.23が
左右対称に配置されている。また、この拡散反射部材2
2.23の内側にはそれぞれ拡散反射面22a、23a
が形成され、さらに、その下方に突出して形成された舌
片22b、23bの前記拡散反射面22a、23atこ
対応した位置には、それぞれフラッシュランプ光源24
.25が配置されている。このフラッシュランプ光源2
4゜25の背面には、ブロッカ−26,27が配設され
ており、このブロッカ−26,27はその内側に形成さ
れた反射面26a、27aによってフラッジ−ランプ光
源24.25の照明光を拡散反射面22a、23aに導
いている。なお、第2図で、符号28は投影レンズ、2
9は遮光材、30は感材面である。
In this exposure apparatus 20, below the platen glass 21, diffuse reflection members 22 and 23 each having a substantially doglegged cross section are arranged symmetrically. In addition, this diffuse reflection member 2
2. On the inside of 23 are diffuse reflection surfaces 22a and 23a, respectively.
Further, flash lamp light sources 24 are provided at positions corresponding to the diffuse reflection surfaces 22a and 23at of the tongue pieces 22b and 23b formed to protrude downward.
.. 25 are arranged. This flash lamp light source 2
Blockers 26 and 27 are arranged on the back side of the 4° 25, and the blockers 26 and 27 reflect the illumination light from the flood lamp light sources 24 and 25 by reflecting surfaces 26a and 27a formed inside the blockers 26 and 27, respectively. The light is guided to diffuse reflection surfaces 22a and 23a. In addition, in FIG. 2, reference numeral 28 indicates a projection lens;
9 is a light shielding material, and 30 is a sensitive material surface.

上述した構成によると、左右対称に配置されたフラッシ
ュランプ光源24.25から照射された照明光は、ブロ
ッカ−26,27によって拡散反射面22a 、23a
に導かれ、この拡散反射面22a、23aに導かれた照
明光は、該反射面22a。
According to the above-described configuration, the illumination light emitted from the symmetrically arranged flash lamp light sources 24 and 25 is diffused by the blockers 26 and 27 onto the diffuse reflection surfaces 22a and 23a.
The illumination light guided to the diffuse reflection surfaces 22a and 23a is directed to the reflection surfaces 22a and 23a.

23aによって拡散され、プラテンガラス21を十分な
照度によって均一に照明することとなる。
23a, and uniformly illuminates the platen glass 21 with sufficient illuminance.

なお、上記実施例では、プラテンガラス21の下方に、
図面に対し左右対称に一対の拡散反射面22a、23a
とランプ光源24.25とを配置するようにしたが、勿
論本考案は上記実施例に限定されることなく、図面の垂
直方向に対し、更に対称な一対の拡散反射面と、フラッ
シュランプ光源とを配置するようにしても良い。
In the above embodiment, below the platen glass 21,
A pair of diffuse reflection surfaces 22a and 23a symmetrically with respect to the drawing
However, the present invention is of course not limited to the above-mentioned embodiment, and may include a pair of diffuse reflection surfaces and a flash lamp light source that are further symmetrical with respect to the vertical direction of the drawing. You may also place

〔発明の効果〕〔Effect of the invention〕

本発明は、複数のフラッシュランプ光源を用い、この照
明光を拡散反射面に導き、この反射面の反射光によって
プラテンガラス面を照明するようにしたため、フラッジ
−ランプ光源の直接光がプラテンガラスを介して外部ζ
こ漏れることがなく、このためプラテンカバーを開放し
た状態でも複写作業が可能となり、しかも複数のフラッ
シュランプ光源を用いるため複写面を均一に照明するこ
とができる。
The present invention uses a plurality of flash lamp light sources, guides the illumination light to a diffuse reflection surface, and illuminates the platen glass surface with the reflected light from the reflection surface, so that the direct light from the flash lamp light source illuminates the platen glass. external ζ via
There is no leakage, so copying can be performed even with the platen cover open, and since a plurality of flash lamp light sources are used, the copying surface can be uniformly illuminated.

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

第1図は従来の複写機の露光装置を示す要部破断斜視図
、第2図は他の従来例を示す要部断面図、第3図は本発
明に係る複写機の露光装置を示す要部断面図である。 20・・・露光装置、21・・・プラテンガラス、22
a。 23a・・拡散反射面、24.25・−・フラッシュラ
ンプ光源、26.27・・・ブロッカ−(7) 第2図 1゜
FIG. 1 is a cutaway perspective view of main parts showing an exposure device of a conventional copying machine, FIG. 2 is a sectional view of main parts of another conventional example, and FIG. 3 is a main part showing an exposure device of a copying machine according to the present invention. FIG. 20... Exposure device, 21... Platen glass, 22
a. 23a...Diffuse reflection surface, 24.25...Flash lamp light source, 26.27...Blocker (7) Fig. 2 1゜

Claims (1)

【特許請求の範囲】[Claims] フラッシュランプ光源を用いてプラテンガラス面を照明
するようにした複写機の露光装置ζこおいて、前記プラ
テンガラスの下方に複数の拡散反射面を配置するととも
に、この複数の反射面に対向する位置ζこ、それぞれ背
面をこブロッカ−を備えたフラッシュランプ光源を配置
し、もって、このランプ光源の直接光をブロッカ−によ
って、それぞれ相対応する拡散反射面に導くとともに、
この複数の拡散反射面の反射光によってプラテンガラス
面を照明するようにしたことを特徴とする複写機の露光
装置。
In an exposure device ζ of a copying machine that illuminates a platen glass surface using a flash lamp light source, a plurality of diffuse reflection surfaces are arranged below the platen glass, and a position facing the plurality of reflection surfaces is provided. A flash lamp light source with a blocker on the back is arranged, and the direct light from the lamp light source is guided to the corresponding diffuse reflection surface by the blocker, and
An exposure device for a copying machine, characterized in that a platen glass surface is illuminated by light reflected from the plurality of diffuse reflection surfaces.
JP12302583A 1983-07-06 1983-07-06 Exposing device of copying machine Pending JPS6014227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12302583A JPS6014227A (en) 1983-07-06 1983-07-06 Exposing device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12302583A JPS6014227A (en) 1983-07-06 1983-07-06 Exposing device of copying machine

Publications (1)

Publication Number Publication Date
JPS6014227A true JPS6014227A (en) 1985-01-24

Family

ID=14850349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12302583A Pending JPS6014227A (en) 1983-07-06 1983-07-06 Exposing device of copying machine

Country Status (1)

Country Link
JP (1) JPS6014227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07256553A (en) * 1994-03-18 1995-10-09 Nisshin Seisakusho:Kk Honing work for plane, work holding device and honing machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841890A (en) * 1971-09-29 1973-06-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841890A (en) * 1971-09-29 1973-06-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07256553A (en) * 1994-03-18 1995-10-09 Nisshin Seisakusho:Kk Honing work for plane, work holding device and honing machine

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