JP2589436B2 - A method for detecting variation information between bits in a photoelectric conversion device - Google Patents
A method for detecting variation information between bits in a photoelectric conversion deviceInfo
- Publication number
- JP2589436B2 JP2589436B2 JP4307875A JP30787592A JP2589436B2 JP 2589436 B2 JP2589436 B2 JP 2589436B2 JP 4307875 A JP4307875 A JP 4307875A JP 30787592 A JP30787592 A JP 30787592A JP 2589436 B2 JP2589436 B2 JP 2589436B2
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric conversion
- element array
- conversion element
- bits
- paper feed
- 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
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Facsimiles In General (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【技術分野】本発明はファクシミリや複写機等の光電変
換装置におけるビット間のバラツキ情報検知に関し、特
に紙送りローラの外周面に反射面を形成し、この反射面
からの反射光を光電変換してビット間のバラツキ情報を
得るようにした検知法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to detection of variation information between bits in a photoelectric conversion device such as a facsimile machine or a copying machine, and more particularly, to forming a reflection surface on an outer peripheral surface of a paper feed roller and photoelectrically converting light reflected from the reflection surface. The present invention relates to a detection method for obtaining variation information between bits.
【０００２】[0002]
【従来技術】ファクシミリや複写機などにはラインセン
サによる光電変換装置が一般的に採用されているが、上
記ラインセンサの光電変換素子アレイやセルフォックレ
ンズアレイの光電特性等は、通常ビット間で多少のバラ
ツキがある。このため、従来の光電変換装置には上記バ
ラツキを補正するためのビット補正回路が設けられたも
のがある。このビット補正回路は、無地白色のいわゆる
全白原稿を光電変換素子アレイにいったん読取らせてビ
ット単位の出力のバラツキ量を検出し、この検出値をも
とにしてビット出力を適正に補正するものである。2. Description of the Related Art A photoelectric conversion device using a line sensor is generally employed in a facsimile, a copying machine, and the like. The photoelectric conversion element array of the line sensor and the photoelectric characteristic of a selfoc lens array usually have a bit-to-bit characteristic. There is some variation. For this reason, some conventional photoelectric conversion devices are provided with a bit correction circuit for correcting the variation. This bit correction circuit causes a photoelectric conversion element array to once read a plain white so-called all-white document, detects the amount of output variation in bit units, and corrects the bit output appropriately based on the detected value. Things.
【０００３】しかし、このようなビット間のバラツキ情
報の検知法では全白原稿が必要であるとともにこれを光
電変換素子アレイに読取らせる手間がかかる。[0003] However, such a method for detecting the variation information between bits requires an all-white original, and also requires reading the photoelectric conversion element array.
【０００４】[0004]
【発明の目的】本発明は上述の如き問題を有効に解決す
べく発明するに至ったものであって、その目的は全白原
稿を用いることなくバラツキ情報を簡単に検知すること
のできるビット間のバラツキ情報検知法を提供すること
にある。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problem effectively, and an object of the present invention is to provide an inter-bit space which can easily detect variation information without using an all-white original. It is an object of the present invention to provide a variation information detection method.
【０００５】[0005]
【補正の要旨】本発明の要旨は、照明光源によって照ら
された原稿を紙送りローラによって移動させつつ前記原
稿表面の画像情報を光電変換素子アレイによって連続的
に光電変換する光電変換装置におけるビット間のバラツ
キ情報検知法において、前記紙送りローラは前記光電変
換素子アレイと該紙送りローラの外周面の上端部を結ぶ
光軸が前記光電変換素子アレイと垂直で、かつ前記光電
変換素子アレイに対向して配設され、前記紙送りローラ
の外周面は黒色の反射面を有し、前記反射面からの反射
光を前記光電変換素子アレイによって光電変換し、この
変換値のバラツキをビット間のバラツキ情報として検知
するようにしたことを特徴とする光電変換装置における
ビット間のバラツキ情報検知法にある。[Summary of Correction] The gist of the present invention is that a document illuminated by an illumination light source is moved by a paper feed roller while image information on the surface of the document is continuously photoelectrically converted by a photoelectric conversion element array. In the variation information detecting method, the paper feed roller has an optical axis connecting the photoelectric conversion element array and an upper end portion of an outer peripheral surface of the paper feed roller is perpendicular to the photoelectric conversion element array, and faces the photoelectric conversion element array. The outer peripheral surface of the paper feed roller has a black reflective surface, and the reflected light from the reflective surface is photoelectrically converted by the photoelectric conversion element array. A method for detecting variation information between bits in a photoelectric conversion device, characterized in that the information is detected as information.
【０００６】[0006]
【発明の実施例】以下に本発明の実施例を図面に基づい
て説明する。図１はラインセンサによる光電変換装置の
概略構造を示したものであって、同図において１は光電
変換素子アレイ、２はセルフォックレンズアレイ、３は
紙送りローラ、４は照明光源である。セルフォックレン
ズアレイ２の光軸は光電変換素子アレイ１に対して垂直
にされており、また紙送りローラ３はその上端部がセル
フォックレンズアレイ２の下端部に対向するように配置
されている。そして紙送りローラ３上に図示しない原稿
が送られてくると、その原稿面に照明光源４の光が照射
され、原稿面の画像情報がセルフォックレンズアレイ２
と光電変換素子アレイ１とによってビット単位で光電変
換されるように構成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic structure of a photoelectric conversion device using a line sensor. In FIG. 1, reference numeral 1 denotes a photoelectric conversion element array, 2 denotes a selfoc lens array, 3 denotes a paper feed roller, and 4 denotes an illumination light source. The optical axis of the SELFOC lens array 2 is perpendicular to the photoelectric conversion element array 1, and the paper feed roller 3 is arranged so that the upper end thereof faces the lower end of the SELFOC lens array 2. . When a document (not shown) is fed onto the paper feed roller 3, the surface of the document is irradiated with light from the illumination light source 4, and image information on the document surface is transferred to the selfoc lens array 2.
The photoelectric conversion element array 1 is configured to perform photoelectric conversion in bit units.
【０００７】上記紙送りローラ３は、従来のものと異な
りその外周全面に黒色の反射面５が形成されている。そ
して照明光源４の光がこの反射面５に照射されると、そ
の反射光が画像情報と同じようにセルフォックレンズア
レイ２と光電変換素子アレイ１とによって光電変換され
るように構成されている。The paper feed roller 3 differs from the conventional one in that a black reflective surface 5 is formed on the entire outer periphery thereof. Then, when the light from the illumination light source 4 irradiates the reflection surface 5, the reflection light is photoelectrically converted by the selfoc lens array 2 and the photoelectric conversion element array 1 in the same manner as the image information. .
【０００８】光電変換装置は上述の如く構成されてな
り、光電変換素子アレイ１におけるビット間のバラツキ
情報は次のようにして検知される。すなわち、原稿を入
れない状態で照明光源を点灯すると、紙送りローラ３の
反射面５からの反射光がセルフォックレンズアレイ２に
て集光され、その後光電変換素子アレイ１にてビット単
位で光電変換される。そしてこの変換値のバラツキがビ
ット間のバラツキ情報としてビット補正回路に転送され
る。[0008] The photoelectric conversion device is configured as described above, and information on variation between bits in the photoelectric conversion element array 1 is detected as follows. That is, when the illumination light source is turned on in a state where the original is not inserted, the reflected light from the reflection surface 5 of the paper feed roller 3 is condensed by the selfoc lens array 2 and then photoelectrically converted by the photoelectric conversion element array 1 in bit units. Is converted. Then, the variation in the converted value is transferred to the bit correction circuit as variation information between bits.
【０００９】更に、黒色と白色に対するビット間のバラ
ツキ情報をそれぞれ検知したい場合には、紙送りーラ３
の外周面に黒色と白色の反射面をそれぞれ半周ずつ形成
してもよい。 Furthermore, when it is desired to detect each variation information between bits against black and white, paper feed over La 3
A black and white reflecting surface may be formed on the outer peripheral surface of each of them for half a circumference.
【００１０】[0010]
【発明の効果】本発明は上述の如く、紙送りローラの外
周面に反射面を形成し、上記反射面からの反射光を光電
変換素子アレイによって光電変換し、この変換値のバラ
ツキをビット間のバラツキ情報として検知するようにし
たものであるから、いわゆる全白原稿を用いることなく
バラツキ情報を簡単に検知することができる。またバラ
ツキ情報の検知を自動的に行なうことも可能であり、こ
の場合はビット間のバラツキ情報の有無にかかわらず所
定のビット補正がなされるので、光電変換装置の信頼性
ないし安定性を大幅に向上させることができる。As described above, according to the present invention, a reflection surface is formed on the outer peripheral surface of a paper feed roller, and light reflected from the reflection surface is photoelectrically converted by a photoelectric conversion element array. The variation information can be easily detected without using a so-called all-white original. It is also possible to automatically detect the variation information. In this case, the predetermined bit correction is performed regardless of the presence or absence of the variation information between bits, so that the reliability or stability of the photoelectric conversion device is greatly reduced. Can be improved.
【００１１】更に、本発明においては、紙送りローラを
光電変換素子アレイと該紙送りローラの外周面の上端部
を結ぶ光軸が前記光電変換素子アレイと垂直で、かつ前
記光電変換素子アレイと対向して配設しているので、バ
ラツキ情報を得る場合と画像情報を得る場合とにおける
照明光の反射位置と光電変換素子アレイとの光学的距離
の変動がなくなり或は最小限に抑えることができる。従
って、ビット間のバラツキ情報を従来にもまして正確に
検知することが可能となる。また、本発明によって、光
電変換装置の信頼性や安定性をより大幅に向上すること
ができる。Further, in the present invention, the optical axis connecting the paper feed roller to the photoelectric conversion element array and the upper end of the outer peripheral surface of the paper feed roller is perpendicular to the photoelectric conversion element array, and Since they are arranged to face each other, fluctuations in the optical distance between the reflection position of the illumination light and the photoelectric conversion element array when obtaining variation information and when obtaining image information can be eliminated or minimized. it can. Therefore, it is possible to detect variation information between bits more accurately than before. Further, according to the present invention, the reliability and stability of the photoelectric conversion device can be significantly improved.
【図１】本発明の一実施例を示す光電変換装置の概略斜
視図。FIG. 1 is a schematic perspective view of a photoelectric conversion device showing one embodiment of the present invention.
１ 光電変換素子アレイ ２ セルフォックレンズアレイ ３ 紙送りローラ ４ 照明光源 ５ 反射面 DESCRIPTION OF SYMBOLS 1 Photoelectric conversion element array 2 Selfoc lens array 3 Paper feed roller 4 Illumination light source 5 Reflection surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 清藤 伸一 東京都大田区下丸子３丁目30番２号 キ ヤノン株式会社内 (56)参考文献 特公 平７−76716（ＪＰ，Ｂ２) 特公 平３−69061（ＪＰ，Ｂ２) ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Seito 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP 7-76716 (JP, B2) JP 3 -69061 (JP, B2)
Claims (1)
りローラによって移動させつつ前記原稿表面の画像情報
を光電変換素子アレイによって連続的に光電変換する光
電変換装置におけるビット間のバラツキ情報検知法にお
いて、前記紙送りローラは前記光電変換素子アレイと該
紙送りローラの外周面の上端部を結ぶ光軸が前記光電変
換素子アレイと垂直で、かつ前記光電変換素子アレイに
対向して配設され、前記紙送りローラの外周面は黒色の
反射面を有し、前記反射面からの反射光を前記光電変換
素子アレイによって光電変換し、この変換値のバラツキ
をビット間のバラツキ情報として検知するようにしたこ
とを特徴とする光電変換装置におけるビット間のバラツ
キ情報検知法。1. A method of detecting variation between bits in a photoelectric conversion device, wherein a document illuminated by an illumination light source is moved by a paper feed roller while image information on the surface of the document is continuously photoelectrically converted by a photoelectric conversion element array. In the paper feed roller, an optical axis connecting the photoelectric conversion element array and an upper end portion of an outer peripheral surface of the paper feed roller is perpendicular to the photoelectric conversion element array, and faces the photoelectric conversion element array. and is disposed, the outer peripheral surface of the paper feed roller of the black
A photoelectric conversion device having a reflecting surface, wherein the reflected light from the reflecting surface is photoelectrically converted by the photoelectric conversion element array, and a variation in the conversion value is detected as variation information between bits. A method for detecting information on variations between bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4307875A JP2589436B2 (en) | 1992-10-23 | 1992-10-23 | A method for detecting variation information between bits in a photoelectric conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4307875A JP2589436B2 (en) | 1992-10-23 | 1992-10-23 | A method for detecting variation information between bits in a photoelectric conversion device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4281113A Division JPH0776716B2 (en) | 1992-09-28 | 1992-09-28 | Photoelectric conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0622103A JPH0622103A (en) | 1994-01-28 |
| JP2589436B2 true JP2589436B2 (en) | 1997-03-12 |
Family
ID=17974218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4307875A Expired - Lifetime JP2589436B2 (en) | 1992-10-23 | 1992-10-23 | A method for detecting variation information between bits in a photoelectric conversion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2589436B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369061A (en) * | 1989-08-07 | 1991-03-25 | Pioneer Electron Corp | Spindle controller for optical disk recording and reproducing device |
-
1992
- 1992-10-23 JP JP4307875A patent/JP2589436B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622103A (en) | 1994-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2502591B2 (en) | Document position detector | |
| JPH02311083A (en) | Original reader | |
| JP2020123839A (en) | Inclination detection device, reading device, image processing apparatus, and inclination detection method | |
| US6301022B1 (en) | Correction method of document inclination angle | |
| JP2589436B2 (en) | A method for detecting variation information between bits in a photoelectric conversion device | |
| JPH0670097A (en) | Picture reader | |
| JPH089116A (en) | Image reader | |
| JP2000232562A (en) | Original reader, original detection method and image processing unit | |
| JP4938943B2 (en) | Image reading method, image reading apparatus, program, and storage medium | |
| JPH0611413A (en) | Photoelectric transducer device and inter-bit dispersion information sensing method with the device | |
| JPH0369061B2 (en) | ||
| JPS60219536A (en) | Detection of irregularity information between bits in photoelectric converter | |
| JP3010494B2 (en) | Document detection device and document detection method in image reading device | |
| JP2000101777A (en) | Image reader | |
| JP7259635B2 (en) | Image reading device, image forming device and program | |
| JPH01276966A (en) | Original reading system | |
| JPH0488746A (en) | Original reader | |
| JP2600579B2 (en) | Photoelectric conversion device | |
| JP2596327B2 (en) | Original image reading device | |
| JPH04137969A (en) | Picture reader | |
| JPH08317140A (en) | Original reader | |
| JP2002176542A (en) | Device and method for reading image | |
| JP3538939B2 (en) | Document size detector | |
| JP2600578B2 (en) | Image reading device | |
| RU2154916C2 (en) | Method and device for image data scanning in image processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |