JPS59108451A - Facsimile device - Google Patents

Facsimile device

Info

Publication number
JPS59108451A
JPS59108451A JP57219032A JP21903282A JPS59108451A JP S59108451 A JPS59108451 A JP S59108451A JP 57219032 A JP57219032 A JP 57219032A JP 21903282 A JP21903282 A JP 21903282A JP S59108451 A JPS59108451 A JP S59108451A
Authority
JP
Japan
Prior art keywords
section
optical system
reinforcing member
document
reinforcement member
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
JP57219032A
Other languages
Japanese (ja)
Other versions
JPH0354503B2 (en
Inventor
Masaaki Shitochi
正明 志土地
Yoshimasa Ooyama
大山 芳正
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
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP57219032A priority Critical patent/JPS59108451A/en
Publication of JPS59108451A publication Critical patent/JPS59108451A/en
Publication of JPH0354503B2 publication Critical patent/JPH0354503B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To use a shading correcting device in common by a reinforcement member by providing a shading correcting window of an optical system to a reinforcement member coupling both side plates installed in a case. CONSTITUTION:Lighting light from a tubular light source 33 lights an original 4 at a reading section 17, and its reflected light is transmitted to a photoelectric converting section 36 at the rear part of the case 1. The photoelectric converting section 36 is constituted of a condendor lens holding section 38 formed incorporatedly with resin with a correcting member 2 at a rear end section of the reinforcement member 2, condensor lens 37 and a photoelectric converting element 39 such as image sensor. A shading correcting window 44 of the optical system 29 is formed on a side wall 43a of a recording roll paper holding section 43 of the reinforcement member 2. The upper and lower ridges of the shading correcting window are formed in a circular arc so that the center is narrow and both ends are wide to an optical axis.

Description

【発明の詳細な説明】[Detailed description of the invention]

技術分野 この発明はファクシミリ装置に関する。 背景技術 従来のファクシミリ装置では、原稿を蛍光灯等の管状光
源(二より照光し、その反射光を集光レンズを透過して
イメージセンナに結像させているが管状光源で原稿を照
光した場合は、原稿の中央部の照度に比較し両端部付近
の照度は低下している。 父、集光レンズの特性上、レンズ中央部を透過する光l
會に比較してVンズ周辺部を透過する光重は低下してい
る。以上の理由によりイメージセンサに到達する光lは
、不均一となり読取性能が大きく低下°「る。読取性能
の低下?防止するため従来装置では、管状光源と原稿と
の闇にVz−ディング補正装置を設け°〔、イメージセ
ンナに到達する光tv制御しCいる。しかしながら、従
来のりニーディング補正装置では、補正装置が独立して
設けられているため、補正装置?設けた分だけ部品点数
が多くな+)Qまた補正装@を位置決めするための機構
及び調整時間も必要になる不都合がある。 発明の開示 この発明は、原稿読取り部と該原稿読取り部に光学系を
介し°C結合する光電変換部との聞に、ファクシミリ装
置の筐体内の両側に設置された一対の側板な納会する補
強部材を配設し、前記補強部材に光学系のりニーディン
グ補正窓を設けることにより、前記補強部材でシェーデ
ィング補正装置を兼用して、独立のシェーディング補正
装置と該補正装置の位置決めのための調整時間等を省略
するものである。 前記補強部材に1箱状の記録ロール紙の保持部を一体成
形し、前記保持部の側壁に前記シェーディング補正窓を
設ける場合には、専用の記録ロール紙の保持部を省略す
ると共に、前記保持部を障害とすることなく光軸を形成
できる様にするものである。 前記補強部材に、光学系の集光レンズの保持部を一体成
形する場合には、共通の補強部材に、光学系のシェーデ
ィング補正窓と集光レンズの保持部とが一体成形される
ことになり、シェーディング補正窓と集合レンズとの位
置関係を調整作業を不要として高精度で決定できるもの
である。 発明を実施するための最良の形態 ′第1図、第2図に於て、目1はファクシミリ装置の筐
体、(21は筐体(1)内の両側に設置された一対の固
定側板(図示しない)の間に張設され1両側板を納金す
る補強部材である。補強部材12)は樹脂で一体成形さ
れている。(3;はファクシミリ装置の筐体(1)内の
前部に配設された原稿搬送機構で、挿入された原稿(4
)を筐体(
TECHNICAL FIELD This invention relates to facsimile machines. BACKGROUND ART In conventional facsimile machines, a document is illuminated by a tubular light source (such as a fluorescent lamp), and the reflected light is transmitted through a condensing lens to form an image on an image sensor. The illuminance near both edges is lower than the illuminance at the center of the document.Due to the characteristics of the condensing lens, the light that passes through the center of the lens is low.
The weight of light that passes through the periphery of the V-lens is lower than that of the lens. Due to the above reasons, the light reaching the image sensor becomes non-uniform and the reading performance is greatly reduced.In order to prevent the reading performance from deteriorating, conventional devices use a Vz-ding correction device in the darkness between the tubular light source and the document. In the conventional glue kneading correction device, however, the correction device is provided independently, so the number of parts increases by the amount of the correction device. +)Q There is also the disadvantage that a mechanism and adjustment time are required for positioning the corrector @.Disclosure of the InventionThe present invention provides an original reading section and a photoelectric device coupled to the original reading section through an optical system. A reinforcing member such as a pair of side plates installed on both sides of the housing of the facsimile machine is disposed between the converter and an optical system glue kneading correction window is provided in the reinforcing member. The reinforcing member is also used as a shading correction device, thereby omitting an independent shading correction device and adjustment time for positioning the correction device.A holding portion for a box-shaped recording roll paper is integrally molded on the reinforcing member. However, when the shading correction window is provided on the side wall of the holding section, a dedicated recording roll paper holding section is omitted and an optical axis can be formed without using the holding section as an obstacle. When the reinforcing member is integrally molded with the holding part of the condensing lens of the optical system, the shading correction window of the optical system and the holding part of the condensing lens are integrally molded with the common reinforcing member. Accordingly, the positional relationship between the shading correction window and the collective lens can be determined with high precision without the need for adjustment work. Reference numeral 1 denotes a housing of the facsimile machine, and reference numeral 21 denotes a reinforcing member that is stretched between a pair of fixed side plates (not shown) installed on both sides of the housing (1) and receives the two side plates.Reinforcing member 12) is integrally molded with resin. (3; is a document transport mechanism installed in the front part of the facsimile machine housing (1), and the inserted document (4)
) to the housing (

【)の上部に一直線に形成された原稿搬送路
(5)ヲ経て排出口(6)から排出Tる。原稿搬送機構
+31は以下の通り構成されている。17+ +81は
送紙ローラ、(91は分離ローラである。送紙ローラ1
7+ 181及び分離ローラ(9)は夫々回転軸が前記
両側板で支承され、一方の側板に取付けられたパルスモ
ータ(図示しない)により駆動されている。(101は
ブレーキ片で1分離ローラ(9)に圧接し、複数枚の原
稿(4)が挿入された場合、上層の原稿を摩擦停止させ
、最下層の@槁から順次1枚ずつ送出される様に機能す
るaOlは送紙ローラ+’71 +81に原稿(41を
押圧する板ばね、03は板ばねOllの取付けられた送
信側の蓋体で、前記両側板に固着した支軸413)で回
動自在に枢支され〔いる。041は送信側の蓋体O2に
固着された原稿ガイド、051は分離ローラ(9)の上
流側箇所で原稿(4)の有無を検出する第1検出手段で
反射型センナにて形成されている。帥は原稿読取り部d
ηの直前で原稿(4)を検出する第2検出手段で蓋体O
2に取付けられた発光ダイオード(16a)と、該ダイ
オードに原稿搬送路i51 k挾んで対向して配置され
たフォトトランジスタ(161))とからなる。前記搬
送機構(3)では、第1検出手段051で原稿+=il
 ’P検出すると送紙ローラ(7)(8)及び分離ロー
ラ(9)が回転し1分離ローラ(91から順次1枚ずつ
繰り出された原稿(4)は、送紙ローラ+71181に
より搬送される。その後送信が終了して第2検出手段1
1f3で最終原稿(4)の後端を検出すると、検出時点
から遅延時間後に送紙ローラ171181及び分離ロー
ラ(9)を停止する。 賭はファクシミリ装置の筐体il+の中央部に配設され
た記録紙搬送機構で、ナーマルタイプの記録ヘッド0!
lに記録紙(割を押圧するプラテンローラ1211にて
、連続記録紙□□□を補強部材12)の用紙ガイド部シ
旧二沿つ゛〔繰出し−にガイド1肋Q31によって形成
される記録紙搬送路(241を経゛C目動カッタQ51
に送り所定の長さに切断して排出1四から送出下る。プ
ラテンローラr111は記録紙検出センナf271の下
流側においC前記両側板に回転自在に支承され、バヤス
モータ(FA示しない)により一方同りラッヂ(図示し
ない)を介し′C駆動されCいる。 lは後述の光学系(2!Jの光軸■の障害にならない様
に光li!l[l□□□)を避けた筒所で記録ヘッド(
19を取付けた受信側の蓋体で、前記両側板に固着した
軸Ca1lに回動目在(二枢lされ、記録紙搬送機構(
1&の上部の開口C@を開閉自在に施蓋しCいる。この
蓋体(2)は原稿搬送路(5)の上流側に配置され、そ
の上面が原稿挿入ガイドとして利用され゛〔いる。また
1M体啜はその閉塞時に記録ヘッド119とプラテンロ
ーラ圓が圧接状態に維持されるべく、ロック機1* (
図示しない)によりロックされる様になり°〔いる。 前記光学系(:)■は以下の通り構成されている。Sa
は読取りガラス国を通して読取り部Onにて原稿141
を照光する管状光源で、蛍光灯にて形成され、原槁(4
)の幅方向【図面に直角な方向】に延長されている。(
至)は反射鏡で1反射光の光軸の方向を変換して反射光
ヲ躍体(]1の後部の後述する光電変換部(至)に送っ
ている。 光電変換部(至)は筐体(」)の後部に配設され、以下
の通り構成されている。cmは集光レンズ、@は集光レ
ンズの保持部で、前記補強部材121の後端部にこの補
強部材(21に一体に樹脂成形されている。(至)はイ
メージセンナ等よりなる光電変換素子、(ト)は光電変
換素子(至)を取付けた読取基板で、取付はネジ(図示
しない)により保持部【aに位置及び角度が調整自在な
態様で取付けられている。 14114よ電気回路基板、12は′@蝉部である。 ここで、前記補強部材(21の中間部には箱状の記録ロ
ール紙■の保持部にか一体成形されている。 かつ、保持部にの側壁(43a)には、記録ロール紙d
を避けCその上部箇所に光学系器のシェーディング補正
窓■が形成されている。 第3図、第4図に示T様に、ンエーディング補正窓圓は
、光軸艶に対して中央部が狭く両端部が拡くなる様に、
上下の縁部が円孤状に形成されている。このため、補正
窓■を通過する読取り光は幅方向における中央部では光
重が抑制され1両端部では光1がほとんど抑制されず、
従って光畷が月−に調整される。また、集光レンズ(ロ
)の保持部(至)とシェーディング補正窓−とが共通の
補強部材(21に一体成形されることになり、従って集
光レンズζmとシェーディング補正窓■との位置関係を
調整作業を不要として高精度で決定できる。 次に前記装置の動作を複写動作を例にとって説明する。 前記装置では、原稿(4)が原稿ガイドを兼ねた受信側
の蓋体(2)の上面に沿って挿入口に差し込まれると、
第1検出手段[151が原稿(4)の前端を検出して検
出信号を発生し、この信号によりパルス:・τ・ ″、手−夕が作動し一〇分離ローラー91及び送紙ロー
ラ(71(8)が回転を開始する。挿入された原稿(4
)が複数枚の場合には1分離ローラ(9)及びブレーキ
片01で挟圧移送され、最下層の原稿から順次1枚ずつ
送出される。その後原稿(4)は送紙ローラ(7)及び
板はね(11)で挟圧移送され原稿(4)の前端が@2
検出手段(Ieで検出されると検出信号が発生し、タイ
マーが作動し−C遅延時間後に原稿(41の前端が読取
り部Onに到達したところで一旦停止下る。その後原稿
搬送機構(3)の送紙ローラ+71181と記録紙搬送
機構(I8)のプラテンローラ[&llが、夫々パルス
モータにより同期して回転し読取走査と記録走査が併行
して行なわれる。 ここで挿入された原稿が1枚の場合、原稿(4)の後端
が第2検出手段00で検出されると検出時点か継続しそ
の後原稿排出動作に移る。記録紙搬送機構1]8)は、
記録終了後、記録紙■の記録終了箇所が自動カッタ湿に
よる切断箇所まで記録紙■を搬送し、自動カッタGによ
り所定の長さに切断した後部へ−〔の動作が終了下る。 また、挿入された原稿が複数枚の場合、記録紙搬送機構
+116にBい°Cは、先行Hの記録終了毎に記録紙を
記録部から切断箇所まで空送りTることなく、先行頁の
画像の記録された記録紙部に後続百の画像全連続して記
録し、連続して記録された先行員と後続頁とが切断箇所
を通るときに切断して分離され、その後最終頁の記録終
了後に、記録紙の?記録部から切断箇所まで空送すして
切断Tる。 産業上の利用可能性 この発明は読取り光をシェーディング補正してなるファ
クシミリ装置に利用される。
The document is discharged from the discharge port (6) through the document conveyance path (5) formed in a straight line at the top of the parentheses. The document transport mechanism +31 is configured as follows. 17+ +81 is a paper feed roller (91 is a separation roller. Paper feed roller 1
The rotating shafts of the 7+ 181 and the separation roller (9) are supported by the side plates, and are driven by a pulse motor (not shown) attached to one side plate. (101 is a brake piece that presses against the 1-separation roller (9), and when multiple originals (4) are inserted, the upper layer of originals is stopped by friction, and the originals are sent out one by one starting from the bottom layer. The aOl, which functions in the same manner as above, is a paper feed roller +'71 +81 with a document (a leaf spring that presses 41, 03 is the lid on the transmitting side to which the leaf spring Oll is attached, and a support shaft 413 fixed to the both side plates). 041 is a document guide fixed to the lid O2 on the sending side, and 051 is a first detection means for detecting the presence or absence of the document (4) at a location upstream of the separation roller (9). It is formed with a reflective sensor.The main part is the document reading section d.
The second detection means detects the document (4) just before the cover O.
2, and a phototransistor (161) disposed opposite to the light emitting diode (16a) across the document transport path i51k. In the transport mechanism (3), the first detection means 051 detects that the document +=il
When 'P is detected, the paper feed rollers (7), (8) and the separation roller (9) rotate, and the documents (4) that are sequentially fed out one by one from the separation roller (91) are conveyed by the paper feed roller +71181. After that, the transmission is completed and the second detection means 1
When the trailing edge of the final document (4) is detected at 1f3, the paper feed roller 171181 and separation roller (9) are stopped after a delay time from the time of detection. The bet is on the recording paper transport mechanism located in the center of the facsimile machine's housing il+, and the 0!
The recording paper is conveyed along the paper guide portion of the recording paper (by the platen roller 1211 that presses the split, the continuous recording paper □□□ is conveyed by the reinforcing member 12) by the guide 1 rib Q31 along the paper guide section. path (via 241) C moving cutter Q51
The material is sent to the outlet 14, cut to a predetermined length, and sent out from the outlet 14. The platen roller r111 is rotatably supported by the both side plates on the downstream side of the recording paper detection sensor f271, and is driven by a bias motor (FA not shown) on one side via a latch (not shown). l is the recording head (
19 is attached to the receiving side lid body, the rotation mark (two pivots l) is attached to the shaft Ca1l fixed to the both side plates, and the recording paper conveyance mechanism (
Open and close the opening C@ at the top of 1&. This lid body (2) is arranged on the upstream side of the document transport path (5), and its upper surface is used as a document insertion guide. In addition, the locking device 1* (
(not shown). The optical system (:)■ is constructed as follows. Sa
is the original 141 in the reading section on through the reading glass country.
A tubular light source that illuminates the
) extends in the width direction [perpendicular to the drawing]. (
1) converts the direction of the optical axis of the reflected light 1 using a reflecting mirror and sends the reflected light to the photoelectric conversion section (2) described later at the rear of the floating body 1. The photoelectric conversion section (1) is located in the housing. It is arranged at the rear of the body ('') and is configured as follows.cm is a condenser lens, @ is a holding part for the condenser lens, and this reinforcing member (21 It is integrally molded with resin. (To) is a photoelectric conversion element such as an image sensor, (G) is a reading board to which the photoelectric conversion element (To) is attached, and is attached to the holding part [a] with screws (not shown). 14114 is an electric circuit board, and 12 is a cicada part. In the middle part of the reinforcing member (21) is a box-shaped recording roll paper (2). The recording roll paper d is integrally formed on the side wall (43a) of the holding part.
A shading correction window (2) of the optical system is formed at the upper part of the C. As shown in FIGS. 3 and 4, the aging correction window is narrow in the center and widened at both ends relative to the optical axis.
The upper and lower edges are arc-shaped. Therefore, the light weight of the reading light passing through the correction window (1) is suppressed at the center in the width direction, and the light (1) is hardly suppressed at both ends.
Therefore, Kounate is adjusted to Moon-. In addition, the holding part (to) of the condenser lens (B) and the shading correction window are integrally molded into a common reinforcing member (21), so that the positional relationship between the condenser lens ζm and the shading correction window can be determined with high precision without the need for adjustment work.Next, the operation of the device will be explained using a copying operation as an example.In the device, the document (4) is placed on the cover (2) on the receiving side, which also serves as a document guide. When inserted into the insertion slot along the top surface,
The first detection means [151] detects the front edge of the document (4) and generates a detection signal, and this signal activates the pulse: . (8) starts rotating.The inserted original (4) starts rotating.
) If there are a plurality of documents, they are transferred under pressure by the one-separation roller (9) and the brake piece 01, and the documents are sent out one by one starting from the lowest layer. After that, the original (4) is transferred under pressure by the paper feed roller (7) and the plate spring (11), and the front edge of the original (4) is moved to @2.
When detected by the detection means (Ie), a detection signal is generated, a timer is activated, and after -C delay time, the front end of the document (41) reaches the reading section On, and the document is temporarily stopped and lowered.Then, the document transport mechanism (3) stops feeding. The paper roller +71181 and the platen roller [&ll of the recording paper transport mechanism (I8) are rotated synchronously by pulse motors, and reading scanning and recording scanning are performed in parallel. If only one original is inserted here. , when the trailing edge of the document (4) is detected by the second detection means 00, the operation continues from the time of detection and then moves to the document ejection operation.The recording paper transport mechanism 1]8)
After the recording is completed, the recording paper (2) is conveyed to the point at which the recording ends on the recording paper (2) where it is cut by the automatic cutter, and then the automatic cutter G cuts the recording paper (2) to a predetermined length. In addition, if there are multiple sheets of the inserted document, the recording paper conveyance mechanism +116 can be used to feed the recording paper from the recording section to the cutting point every time the preceding H recording is completed. All subsequent 100 images are continuously recorded on the recording paper portion on which the images have been recorded, and the continuously recorded preceding page and subsequent page are cut and separated when passing through the cutting point, and then the final page is recorded. After finishing, what about the recording paper? The paper is fed from the recording section to the cutting point and then cut. Industrial Applicability The present invention is utilized in a facsimile machine that performs shading correction on reading light.

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

第1図はこの発明の一実施例の側面方向からみた概略的
構成図、第2図は同実施例の蓋体を開放した状態の側面
方向からみた概略的構成図、第3図は同実施例の要部の
斜視図、第4図は同実施例の要部の正面図である。 11:・・・筐体、 (21・・・補強部材、On・・
・読取り部。 田・・・記録ロール紙、  12ト・光学系、 (至)
・・・光電変換部、 困・・・集光レンズの保持部、f
O・・・ロール紙の保持部、 (43a)・・・保持部
の側壁、 −・・・シェーディング補正窓。
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention as seen from the side direction, FIG. 2 is a schematic configuration diagram of the same embodiment as seen from the side direction with the lid open, and FIG. 3 is the same embodiment. FIG. 4 is a perspective view of the main part of the example, and FIG. 4 is a front view of the main part of the same embodiment. 11:...Casing, (21...Reinforcement member, On...
・Reading section. Field: Recording roll paper, 12 tons, optical system, (to)
...Photoelectric conversion part, Trouble...Condensing lens holding part, f
O... Roll paper holding part, (43a)... Side wall of the holding part, -... Shading correction window.

Claims (1)

【特許請求の範囲】 1)原稿読取り部とび原稿読取り部に光学系を介して結
合する光電変換部との間に、ファクシミリ装置の匣体内
の両側に設置された一対の側板を結合する補強部材を配
設し、前記補強部材に光学系のシェーディング補正窓を
設けたことを特徴とするファクシミリ装置。 2)前記補強部材に1箱状の記録ロール紙の保持部?−
一体成形、前記保持部の側壁に前記シェーディング補正
窓を設けてなることを特徴とする特許請求の範囲第1項
記載のファクシミリ装置。 5)前記補強部材に、光学系の集光レンズの保持部を一
体成形してなることを特徴とする特許請求の範囲第1項
又は第2項記載のファクシミリ装置。
[Scope of Claims] 1) A reinforcing member that connects a pair of side plates installed on both sides inside a case of a facsimile device between an original reading unit and a photoelectric conversion unit that is connected to the original reading unit via an optical system. A facsimile machine, characterized in that the reinforcing member is provided with a shading correction window of an optical system. 2) Is there a holding section for a box-shaped recording roll paper in the reinforcing member? −
2. The facsimile apparatus according to claim 1, wherein the shading correction window is provided in a side wall of the holding part by integral molding. 5) The facsimile apparatus according to claim 1 or 2, wherein a holding portion for a condensing lens of an optical system is integrally molded on the reinforcing member.
JP57219032A 1982-12-13 1982-12-13 Facsimile device Granted JPS59108451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57219032A JPS59108451A (en) 1982-12-13 1982-12-13 Facsimile device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57219032A JPS59108451A (en) 1982-12-13 1982-12-13 Facsimile device

Publications (2)

Publication Number Publication Date
JPS59108451A true JPS59108451A (en) 1984-06-22
JPH0354503B2 JPH0354503B2 (en) 1991-08-20

Family

ID=16729180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57219032A Granted JPS59108451A (en) 1982-12-13 1982-12-13 Facsimile device

Country Status (1)

Country Link
JP (1) JPS59108451A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397956U (en) * 1986-12-15 1988-06-24
US5329378A (en) * 1992-11-18 1994-07-12 Samsung Electronics Co., Ltd. Facsimile device with a white level controller
JP2014095850A (en) * 2012-11-12 2014-05-22 Ricoh Co Ltd Reading lens unit, image reading device, and image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397956U (en) * 1986-12-15 1988-06-24
US5329378A (en) * 1992-11-18 1994-07-12 Samsung Electronics Co., Ltd. Facsimile device with a white level controller
JP2014095850A (en) * 2012-11-12 2014-05-22 Ricoh Co Ltd Reading lens unit, image reading device, and image forming apparatus

Also Published As

Publication number Publication date
JPH0354503B2 (en) 1991-08-20

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