JPH0215075B2 - - Google Patents
Info
- Publication number
- JPH0215075B2 JPH0215075B2 JP56109273A JP10927381A JPH0215075B2 JP H0215075 B2 JPH0215075 B2 JP H0215075B2 JP 56109273 A JP56109273 A JP 56109273A JP 10927381 A JP10927381 A JP 10927381A JP H0215075 B2 JPH0215075 B2 JP H0215075B2
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- endless belt
- exposure
- image recording
- recording apparatus
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 36
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
- G03G15/754—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to band, e.g. tensioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
- G01D15/14—Optical recording elements; Recording elements using X-or nuclear radiation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
- G03G15/326—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by application of light, e.g. using a LED array
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
- G06K15/1295—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers using a particular photoreceptive medium
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Description
【発明の詳細な説明】
この発明はエンドレスベルト状感光体を有する
画像記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image recording apparatus having an endless belt-like photoreceptor.
電子写真方式の画像記録装置としては、ドラム
状感光体の周面に沿つて帯電器、スリツト状露光
手段の入射位置、現像器を順次配設し露光手段か
らの走査ビームの光強度に応じた画像を記録する
装置が多く用いられている。しかし、ドラム状感
光体の周囲に全作像手段を配列した上記の形式の
記録装置は、感光体の内部空間スペースが無駄に
なり、結果として装置全体が大型化する。この欠
点を解決するためにドラムの直径を小さくする
と、
(イ) 各ユニツトの空間スペース、配置が制限され
る。 In an electrophotographic image recording device, a charger, an incident position of a slit-like exposure means, and a developing device are sequentially arranged along the circumferential surface of a drum-shaped photoreceptor, and a charger is arranged in order according to the light intensity of the scanning beam from the exposure means. Many devices are used to record images. However, in the above-mentioned type of recording apparatus in which all the image forming means are arranged around a drum-shaped photoreceptor, the internal space of the photoreceptor is wasted, resulting in an increase in the size of the entire apparatus. If the diameter of the drum is reduced to solve this drawback, (a) the space and arrangement of each unit will be restricted;
(ロ) スリツト状露光手段の場合結像面の曲率半径
が小さい曲面となるため結像性能が低下するの
みならず、走査ビームの走査線がドラムの軸と
平行でない場合はその不平行度が拡大され、走
査ビーム径も位置により変化する。(b) In the case of a slit-shaped exposure means, the image forming surface is a curved surface with a small radius of curvature, which not only deteriorates the imaging performance, but also increases the degree of non-parallelism if the scanning line of the scanning beam is not parallel to the axis of the drum. The scanning beam diameter also changes depending on the position.
(ハ) 帯電器がスコロトロン方式の場合は特にグリ
ツドワイヤの配置を感光体の曲率面に合せる必
要があり複雑化する。(c) If the charger is of the scorotron type, the arrangement of the grid wires must be matched to the curvature surface of the photoreceptor, which complicates the process.
等の欠点を生ずる。This results in disadvantages such as:
そこで感光体としてエンドレスベルト状感光体
を用い、これを１つの駆動ローラと１つ以上の従
動ローラとにより支持し、これらのローラをエン
ドレスベルト状感光体の全周に比して小さい円周
のローラで構成することにより装置内の感光体の
占める空間スペースを小さくし、結果として装置
の小型化を達成できる。しかしこのようなエンド
レスベルト状感光体を用いた記録装置では感光体
ベルトがローラに接触する部分では感光体外周面
の曲率半径が小さくなり、又ローラとローラとの
間では場所によつては感光体ベルトにたるみ、波
打等の現象を生ずるので露光位置、帯電器及び現
像器の設置位置の設定に十分配慮する必要があ
る。すなわち、露光位置は感光面の速度変動が少
く、しかも曲率半径の大きい位置に、又現像器設
置位置は現像キヤツプの変動が少なくなるような
位置に、又帯電器設置位置はその形状が複雑にな
らず、感光体面の位置の変動が少い位置に設定す
ることが必要である。 Therefore, an endless belt-like photoreceptor is used as the photoreceptor, and it is supported by one driving roller and one or more driven rollers. By using rollers, the space occupied by the photoreceptor within the device can be reduced, and as a result, the device can be made more compact. However, in a recording device using such an endless belt-like photoreceptor, the radius of curvature of the outer circumferential surface of the photoreceptor is small at the portion where the photoreceptor belt contacts the roller, and the radius of curvature of the outer peripheral surface of the photoreceptor is small depending on the location between the rollers. Since phenomena such as sagging and waving may occur in the body belt, it is necessary to take sufficient consideration in setting the exposure position and the installation position of the charger and developer. In other words, the exposure position is such that the speed fluctuation of the photosensitive surface is small and the radius of curvature is large, the developing device is installed at a position where the fluctuation of the developing cap is small, and the charger is installed at a position where its shape is complicated. Therefore, it is necessary to set the position at a position where the position of the photoreceptor surface is less likely to fluctuate.
この発明は、画像記録装置の感光体としてエン
ドレスベルト状の感光体を使用する場合の上述の
要求に適つた露光位置、帯電器及び現像器の設置
位置を有する画像記録装置を提供することを目的
とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide an image recording device having an exposure position, a charging device, and a developing device installation position that meet the above-mentioned requirements when an endless belt-like photoconductor is used as a photoconductor of the image recording device. shall be.
以下、本発明をその実施例を示す図面に基ずい
て詳細に説明する。 EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail based on drawings showing embodiments thereof.
第１図は本発明の画像記録装置に使用するエン
ドレスベルト状感光体の支持状態を図式的に示し
たものである。（簡単のため１つの駆動ローラと
１つの従動ローラにより支持された例を示す。）
エンドレスベルト状感光体１はベースフイルム上
に無機または有機光導電体を設けたもので可橈性
を有している。このような感光体１を図に示す如
く駆動ローラ２と従動ローラ３に架け渡して矢印
方向に駆動すると、感光体１は平面性、速度特性
等の違いにより、４つの領域に分けられる。この
４つの領域のうち、感光面が他の構成ユニツトと
の位置変動の少ない領域は張り側平面域と、駆
動側曲面域である。又、感光体の送り速度の安
定している領域は駆動側曲面域及びその近くの
張り側平面域となる。ゆるみ側平面域は、感
光面の波うち等の現象により位置、送り速度の変
動が生じ易く、従動側曲面域は送り速度の変動
が生じ易い。 FIG. 1 schematically shows how an endless belt-like photoreceptor used in the image recording apparatus of the present invention is supported. (For simplicity, an example in which the roller is supported by one driving roller and one driven roller is shown.)
The endless belt-like photoreceptor 1 has flexibility and is made by providing an inorganic or organic photoconductor on a base film. When such a photoreceptor 1 is placed between a driving roller 2 and a driven roller 3 as shown in the figure and driven in the direction of the arrow, the photoreceptor 1 is divided into four regions depending on flatness, speed characteristics, etc. Of these four areas, the areas where the photosensitive surface has little positional variation with respect to other constituent units are the flat side area on the tension side and the curved area on the drive side. Further, the region where the photoreceptor feeding speed is stable is the driving side curved surface area and the tension side flat area near the driving side curved surface area. In the flat area on the loose side, fluctuations in position and feed rate are likely to occur due to phenomena such as waviness of the photosensitive surface, and in the curved side area on the driven side, fluctuation in feed rate is likely to occur.
上述のエンドレスベルト状感光体１の各領域の
特性を考慮すると、画像形成に重要な帯電、露
光、現像の工程は、エンドレスベルト状感光体１
が張り側平面域から駆動側曲面域に移動する
間に行なうのが望ましいことが判る。 Considering the characteristics of each region of the endless belt-like photoreceptor 1 described above, the steps of charging, exposure, and development that are important for image formation are
It can be seen that it is desirable to carry out this process while moving from the tension side flat area to the driving side curved area.
さらに具体的に述べれば、露光位置としては、
感光面の変動が少なく、しかも速度変動が少ない
平面域として感光体１が駆動ローラ２に接する直
前の平面域を選び、現像器は現像ギヤツプの変
動及び速度変動の最も少ない感光体１と駆動ロー
ラ２とが接している曲面域に配置し、又帯電器
は感光体の平面域でなおかつ、感光体面の変動が
少ない張り側に設けることが前述の目的に適つ
ている。 More specifically, the exposure position is
A flat area immediately before the photoconductor 1 touches the drive roller 2 is selected as a flat area where there is little variation in the photoconductor surface and speed variation. It is suitable for the above-mentioned purpose to arrange the charger in a curved area where the photoreceptor 2 is in contact with the photoreceptor, and to provide the charger in a flat area of the photoreceptor and on the tension side where the photoreceptor surface is less likely to fluctuate.
第２図は、原稿４を移動し、この原稿像をイン
ミラーレンズ５とミラー６を用いた結像光学系７
により、駆動ローラ２により駆動されるエンドレ
スベルト状感光体１の面に結像する方式の複写装
置に上述の考方にもとずいて入射位直８、帯電器
９及び現像器１０を配置した実施例を示す。帯電
器９はエンドレスベルト状感光体１の張り側平面
域に、現像器１０は駆動側曲面域のほゞ中央に、
そして露光位置８は平面から曲面に変化する直前
の平面域に設けられている。 FIG. 2 shows an image forming optical system 7 using an in-mirror lens 5 and a mirror 6, which moves a document 4 and converts the document image into an image forming system 7.
Based on the above-mentioned concept, a copying apparatus of a type in which an image is formed on the surface of an endless belt-like photoreceptor 1 driven by a drive roller 2 is provided with an incident position 8, a charger 9, and a developer 10. An example is shown. The charger 9 is located on the flat side of the endless belt-like photoreceptor 1, and the developing device 10 is located approximately in the center of the curved surface area on the drive side.
The exposure position 8 is provided in a flat area immediately before the surface changes from a flat surface to a curved surface.
第２図に示す他の実施例では、露光用結像手段
として集束性光伝送体アレイ５′を使用した以外
は第２図に示した実施例と同じであり、同様の作
用効果が期待できる。 The other embodiment shown in FIG. 2 is the same as the embodiment shown in FIG. 2 except that a convergent light transmission array 5' is used as the imaging means for exposure, and the same effects can be expected. .
第４図に示す更に別の実施例では、感光体露光
手段として光源にHe―Ne等のガスレーザーある
いは半導体レーザー等を用い、光源ビームを変
調、偏光して感光体上に微少なビームスポツトを
その感光強度を変化させながら走査することによ
り露光を行なう光ビーム走査手段１１を用いた以
外は、第２図及び第３図に示した実施例と同様で
あり、したがつて同様の作用、効果が得られる。 In yet another embodiment shown in FIG. 4, a gas laser such as He--Ne or a semiconductor laser is used as a light source as a photoreceptor exposure means, and the light source beam is modulated and polarized to form a minute beam spot on the photoreceptor. The embodiment is the same as the embodiment shown in FIGS. 2 and 3, except that it uses a light beam scanning means 11 that performs exposure by scanning while changing the photosensitive intensity, and therefore has the same operation and effect. is obtained.
上記の各実施例では、エンドレスベルト状感光
体１は１つの駆動ローラ２と１つの従動ローラ３
とに架け渡された例について説明したが、第５図
に示す如く、従動ローラ３を複数にし、又エンド
レスベルト状感光体１の平面域を必要に応じて水
平から傾斜させた場合にも本発明の上述の配置関
係を適用することにより、第２図乃至第４図に示
した実施例と同様の作用効果が得られる。 In each of the above embodiments, the endless belt-like photoreceptor 1 includes one driving roller 2 and one driven roller 3.
Although we have described an example in which the driven rollers 3 are provided in a plurality as shown in FIG. By applying the above-described arrangement of the invention, the same effects as the embodiments shown in FIGS. 2 to 4 can be obtained.
以上の如く、本発明によれば感光体をエンドレ
スベルト状にして装置の小型化、簡素化をはかつ
た場合にも走査ビームの感光体の幅方向に対する
平行性の調整精度が楽になり、感光体と現像部と
のギヤツプ維持、帯電器の形状の簡素化が達成で
き、複写複写品質の向上にも効果が得られる。 As described above, according to the present invention, even when the photoreceptor is shaped like an endless belt to downsize and simplify the device, it is possible to easily adjust the parallelism of the scanning beam to the width direction of the photoreceptor. It is possible to maintain the gap between the image forming apparatus and the developing section, to simplify the shape of the charger, and to improve the quality of copies.
第１図はエンドレスベルト状感光体の支持状態
とその各部の性質を説明するための図式図、第２
図は本発明の実施例を示す断面図、第３図は本発
明の他の実施例を示す断面図、第４図は本発明の
更に別の実施例を示す断面図、第５図は更に他の
実施例を示す断面図である。
１…エンドレスベルト状感光体、２…駆動ロー
ラ、３…従動ローラ、８…入射位置、９…帯電
器、１０…現像器、１１…光ビーム走査手段。
Figure 1 is a schematic diagram for explaining the supporting state of the endless belt-like photoreceptor and the properties of each part thereof.
3 is a sectional view showing another embodiment of the invention, FIG. 4 is a sectional view showing still another embodiment of the invention, and FIG. 5 is a sectional view showing another embodiment of the invention. FIG. 7 is a sectional view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Endless belt-shaped photoreceptor, 2... Drive roller, 3... Followed roller, 8... Incident position, 9... Charger, 10... Developing device, 11... Light beam scanning means.
Claims (1)
とにより支持されたエンドレスベルト状感光体
と、 帯電手段と、スリツト状露光手段と、現像手段
とを有する画像記録装置において、 上記露光手段の露光位置を感光体が駆動ローラ
と接し始め、平面から曲面に変化する変化点直前
の平面領域に設け、 前記帯電手段を前記露光位置の上流側近傍でエ
ンドレスベルト状感光体の張り側平面領域に設
け、 前記現像手段を駆動ローラと感光体とが接して
いる曲面領域に設けたことを特徴とする画像記録
装置。 ２ 上記スリツト露光手段としてレーザ光等の光
ビーム走査手段を用いたことを特徴とする特許請
求の範囲第１項記載の画像記録装置。[Scope of Claims] 1. An image recording apparatus having an endless belt-like photoreceptor supported by one driving roller and one or more driven rollers, a charging means, a slit-like exposing means, and a developing means. , the exposure position of the exposure means is set in a flat area immediately before the point where the photoreceptor starts contacting the drive roller and changes from a flat surface to a curved surface, and the charging means is placed near the upstream side of the exposure position on the endless belt-shaped photoreceptor. An image recording apparatus characterized in that the developing means is provided in a flat area on the tension side, and the developing means is provided in a curved area where a drive roller and a photoreceptor are in contact. 2. The image recording apparatus according to claim 1, wherein a light beam scanning means such as a laser beam is used as the slit exposure means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10927381A JPS5811982A (en) | 1981-07-15 | 1981-07-15 | Image recording device |
| US06/398,630 US4494130A (en) | 1981-07-15 | 1982-07-15 | Laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10927381A JPS5811982A (en) | 1981-07-15 | 1981-07-15 | Image recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5811982A JPS5811982A (en) | 1983-01-22 |
| JPH0215075B2 true JPH0215075B2 (en) | 1990-04-10 |
Family
ID=14505986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10927381A Granted JPS5811982A (en) | 1981-07-15 | 1981-07-15 | Image recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5811982A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61249354A (en) * | 1985-04-30 | 1986-11-06 | Nisshin Flour Milling Co Ltd | Pet food |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124431A (en) * | 1976-06-30 | 1978-10-30 | Ricoh Co Ltd | Electrophotographic copier |
| JPS5469442A (en) * | 1977-11-14 | 1979-06-04 | Canon Inc | Copying machine |
| JPS5499642A (en) * | 1978-01-24 | 1979-08-06 | Nec Corp | Electrophotographic apparatus |
| JPS5552082A (en) * | 1978-09-27 | 1980-04-16 | Xerox Corp | Belt assembly body |
| JPS5611474A (en) * | 1979-07-11 | 1981-02-04 | Canon Inc | Copying machine |
| JPS5672412A (en) * | 1979-11-19 | 1981-06-16 | Matsushita Electric Ind Co Ltd | Optical recorder |
| JPS5679575A (en) * | 1979-12-03 | 1981-06-30 | Fuji Photo Film Co Ltd | Picture recording and playback method |
-
1981
- 1981-07-15 JP JP10927381A patent/JPS5811982A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124431A (en) * | 1976-06-30 | 1978-10-30 | Ricoh Co Ltd | Electrophotographic copier |
| JPS5469442A (en) * | 1977-11-14 | 1979-06-04 | Canon Inc | Copying machine |
| JPS5499642A (en) * | 1978-01-24 | 1979-08-06 | Nec Corp | Electrophotographic apparatus |
| JPS5552082A (en) * | 1978-09-27 | 1980-04-16 | Xerox Corp | Belt assembly body |
| JPS5611474A (en) * | 1979-07-11 | 1981-02-04 | Canon Inc | Copying machine |
| JPS5672412A (en) * | 1979-11-19 | 1981-06-16 | Matsushita Electric Ind Co Ltd | Optical recorder |
| JPS5679575A (en) * | 1979-12-03 | 1981-06-30 | Fuji Photo Film Co Ltd | Picture recording and playback method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5811982A (en) | 1983-01-22 |
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