JPS61188569A - Copying paper peeling off device - Google Patents

Copying paper peeling off device

Info

Publication number
JPS61188569A
JPS61188569A JP3076185A JP3076185A JPS61188569A JP S61188569 A JPS61188569 A JP S61188569A JP 3076185 A JP3076185 A JP 3076185A JP 3076185 A JP3076185 A JP 3076185A JP S61188569 A JPS61188569 A JP S61188569A
Authority
JP
Japan
Prior art keywords
roller
peeling
copy paper
peeling roller
sensitive drum
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
JP3076185A
Other languages
Japanese (ja)
Inventor
Yoshiharu Fujii
義晴 藤井
Masahiro Mori
正弘 森
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP3076185A priority Critical patent/JPS61188569A/en
Publication of JPS61188569A publication Critical patent/JPS61188569A/en
Pending legal-status Critical Current

Links

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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6532—Removing a copy sheet form a xerographic drum, band or plate

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Abstract

PURPOSE:To make coincide a peripheral speed of a peeling off roller and a sensitive drum and carry a copying paper effectively by disposing the separating roller in contact with a circumferential section of the sensitive drum. CONSTITUTION:There are disposed a sensitive drum 1, a peeling off roller 2, an application roller 3, and a peeling off belt 4 such as 'Mylar(R)' film. The separating roller 2 is driven in contact with the sensitive drum 1 and application roller 3 contacts the roller 2. A copying paper 12 is seeled off by the belt 4 and immediately after, carried by the roller 2 and the application roller 3. In such a manner, by disposing the roller 2 in contact with the circumferential section of the sensitive drum 1, a peripheral speed of the sensitive drum 1 coincides with that of the roller 2, and the copying paper is carried without distortion.

Description

【発明の詳細な説明】 く技術分野〉 この発明は電子写真複写機等に組み込まれる複写用紙剥
離装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a copy paper peeling device incorporated into an electrophotographic copying machine or the like.

〈従来技術とその欠点〉 従来のこの種装置では第３図に示すように感光体ドラム
ｌの端部に剥離ベルト４を設け、複写用紙１２は転写後
剥離ベルト４により剥離される。<Prior Art and Its Disadvantages> In a conventional device of this kind, as shown in FIG. 3, a peeling belt 4 is provided at the end of the photosensitive drum 1, and the copy paper 12 is peeled off by the peeling belt 4 after transfer.

剥離ローラ２と圧着ローラ３は前記剥離された複写用紙
１２を搬送する。A peeling roller 2 and a pressure roller 3 convey the peeled copy paper 12.

この剥離ローラと、圧着ローラは複写用紙の搬送力を確
保するとともに、一定方向に沿って搬送するために必要
なものである。The peeling roller and the pressure roller are necessary to ensure the conveying force of the copy sheet and to convey it along a certain direction.

第４図は全体を構成を示すものであり、同図より明らか
なように感光体ドラムｌはドラム駆動輪１０により駆動
され剥離ローラ２は剥離ドラム駆動用スプロケット１１
により駆動される。尚７は搬送ローラ、８はペーパーガ
イド、９は転写器、５は定着ローラ、６はヒートローラ
である。また距離Ａは前記搬送ローラと定着ローラ及び
ヒートローラまでの距離を表しｔおり、剥離ローラ２と
圧着ローラ３は転写後の複写用紙を定着ローラ及びヒー
トローラまで搬送するための作用も果たしている。剥離
ローラは複写用紙の片方の側部（同図におけるＸ部）の
み挟持して搬送するため、Ｘ部は剥離ローラの搬送速度
で搬送され、複写用紙の他方の側部（同図における７部
）は感光体ドラムの搬送速度に応じて搬送される。従っ
て、この場合感光体ドラム１の周速度Ｖｄおよび剥離ロ
ーラ２の周速度ｖｈは一敗していることが必要である、
もし不一致でよあればＸ部とＹ部とでは複写用紙の搬送
速度が異なるため、複写用紙に歪が生じる。その結果、
転写時において複写用紙がブしたり白ヌケと云った転写
不良を引き起こす問題かあ　。FIG. 4 shows the overall configuration, and as is clear from the figure, the photosensitive drum l is driven by a drum drive wheel 10, and the peeling roller 2 is driven by a sprocket 11 for driving the peeling drum.
Driven by Note that 7 is a conveyance roller, 8 is a paper guide, 9 is a transfer device, 5 is a fixing roller, and 6 is a heat roller. Further, the distance A represents the distance from the conveying roller to the fixing roller and the heat roller, and the peeling roller 2 and the pressure roller 3 also function to convey the copy sheet after transfer to the fixing roller and the heat roller. Since the peeling roller grips and conveys only one side of the copy paper (section X in the figure), the X section is conveyed at the conveyance speed of the peel roller, and the other side of the copy paper (section ) are transported according to the transport speed of the photoreceptor drum. Therefore, in this case, it is necessary that the circumferential speed Vd of the photosensitive drum 1 and the circumferential speed vh of the peeling roller 2 are the same.
If they do not match, the copy paper is conveyed at different speeds in the X section and the Y section, resulting in distortion of the copy paper. the result,
This may be a problem that causes transfer defects such as copy paper blurring or white spots during transfer.

る。感光体ドラムおよび剥離ローラの周速度はそれぞれ
の駆動部においては、−、敢するように設計されている
。しかしながら剥離ローラと感光体ドラムの径寸法のバ
ラツキがあれば周速度に影響する。第４図において複写
用紙がＸおよびＹの幅として搬送される場合Ｘ部の周速
とＹ部の周速による複写用紙の歪は第５図に示す関係と
なる。ここでＸはＸ部の搬送距離、Ｙ部はＹ部の搬送距
離、ｌは歪の距離である。今、例えば剥離ローラの直径
が２４ｍｍに対し０．１ｍｍの誤差があるとすればＡ３
サイズの複写用紙においてはＸ部の搬送距離の差は約１
．３ｍｍとなり、その場合の距離ｌは２７．８ｍｍにも
なる。このことが複写用紙の部分的な歪となりその結果
転写部において複写用紙がドラムから浮き上がリブレや
未転写（白ヌケ部）が生じる。Ru. The circumferential speeds of the photoreceptor drum and the peeling roller are designed to be approximately -100 in each driving section. However, if there are variations in the diameters of the peeling roller and the photoreceptor drum, the circumferential speed will be affected. In FIG. 4, when the copy paper is conveyed with widths of X and Y, the distortion of the copy paper due to the circumferential speed of the X section and the circumferential velocity of the Y section has the relationship shown in FIG. Here, X is the conveyance distance of the X section, Y section is the conveyance distance of the Y section, and l is the distance of distortion. Now, for example, if the diameter of the peeling roller is 24 mm and there is an error of 0.1 mm, then
For copy paper of the same size, the difference in conveyance distance for part X is approximately 1
．． 3 mm, and the distance l in that case becomes 27.8 mm. This causes partial distortion of the copy paper, and as a result, the copy paper rises from the drum in the transfer section, causing ribbing and non-transfer (white blank areas).

第６図は前記周速度Ｖｄとｖｈの差によって複写用紙の
歪を表す例である。同図において（Ａ）は剥離ローラの
周速度が感光体ドラムの周速度より小さい場合（Ｂ）は
剥離ローラの周速度が感光体ドラムの周速度より大きい
場合である。FIG. 6 is an example showing the distortion of the copy paper due to the difference between the circumferential velocities Vd and vh. In the figure, (A) shows a case where the circumferential speed of the peeling roller is lower than the circumferential speed of the photoreceptor drum, and (B) shows a case where the circumferential speed of the peeling roller is higher than the circumferential speed of the photoreceptor drum.

以上のように感光体ドラムと剥離ローラの周速度を一致
させる必要があるが、系の誤差をある基準以下に抑える
必要があり、高度な製作技術が要求される。As described above, it is necessary to match the circumferential speeds of the photosensitive drum and the peeling roller, but it is also necessary to suppress errors in the system below a certain standard, which requires advanced manufacturing technology.

〈発明の目的〉 この発明は剥離ローラと感光体ドラムの径寸法に多少の
バラツキがあっても、剥離ローラと感光体ドラムの周速
度を一致させ、複写用紙を歪なく搬送することにより、
転写不良を防止する複写用紙剥離装置を提供することに
ある。<Objective of the Invention> The present invention makes it possible to match the circumferential speeds of the peeling roller and the photosensitive drum to convey copying paper without distortion even if there is some variation in the diameter dimensions of the peeling roller and the photosensitive drum.
An object of the present invention is to provide a copy paper peeling device that prevents transfer defects.

〈発明の構成および効果〉 この発明は剥離ローラを感光体ドラム周辺部に接して配
置し、感光体ドラムを駆動源として剥離ローラを駆動す
るようにしたことを特徴とする。<Structure and Effects of the Invention> The present invention is characterized in that a peeling roller is disposed in contact with the peripheral portion of the photoreceptor drum, and the peeling roller is driven using the photoreceptor drum as a drive source.

上記構成によれば、剥離ローラは感光体ドラムの回転に
より従動し、剥離ローラに付設している圧着ローラ間に
おいて複写用紙が搬送される。このため感光体ドラムと
剥離ローラの周速は必ず一致する。また駆動系が簡素化
される効果がある。According to the above configuration, the peeling roller is driven by the rotation of the photosensitive drum, and the copy paper is conveyed between the pressure rollers attached to the peeling roller. Therefore, the circumferential speeds of the photoreceptor drum and the peeling roller are always the same. Further, there is an effect that the drive system is simplified.

、、＜実施例〉 第１図および第２図はこの発明に係る剥離ローラと感光
体ドラムの関係を示すものである。,,<Example> FIGS. 1 and 2 show the relationship between a peeling roller and a photosensitive drum according to the present invention.

同図において、１は感光体ドラム、２は剥離ローラ、３
は圧着ローラ、４はマイラーフィルム等によりなる剥離
ベルトである。剥離ローラ２は感光体ドラム１に接して
駆動され、圧着ローラ３は剥離ローラ２と接する。複写
用紙１２は剥離ベルト４により剥離され、その直後剥離
ローラ２と圧着ローラ３により搬送される。このように
剥離ローラを感光体ドラム周辺部に接して配置したこと
により感光体ドラムの周速度と剥離ローラ周速度が一致
し、複写用紙が歪むことなく搬送される。In the figure, 1 is a photoreceptor drum, 2 is a peeling roller, and 3 is a photosensitive drum.
4 is a pressure roller, and 4 is a peeling belt made of Mylar film or the like. The peeling roller 2 is driven in contact with the photoreceptor drum 1, and the pressure roller 3 is in contact with the peeling roller 2. The copy paper 12 is peeled off by a peeling belt 4, and immediately thereafter conveyed by a peeling roller 2 and a pressure roller 3. By arranging the peeling roller in contact with the peripheral portion of the photoreceptor drum in this manner, the circumferential speed of the photoreceptor drum and the circumferential speed of the peeling roller match, and the copy paper is conveyed without being distorted.

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

第１図は本発明の剥離ローラと感光体ドラムの関係を示
す斜視図、第２図はその断面図、第３図は従来の剥離ロ
ーラと感光体ドラムの関係を示す断面図、第４図はその
斜視図で第５図および第６図は複写用紙の搬送時□にお
ける歪の例を説明する図である。 １−感光体ドラム、２−剥離ローラ、 ３−圧着ローラ、　　４二剥離ベルト、５一定着ローラ
、　　６−ヒードローラ、１−＠送ローラ、　　８−ペ
ーパーガイド、９−転写器、　　　１０−ドラム駆動輪
、１１−剥離ドラム駆動用スプロケット、１２−複写用
紙。FIG. 1 is a perspective view showing the relationship between the peeling roller and photosensitive drum of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a cross-sectional view showing the relationship between the conventional peeling roller and photosensitive drum, and FIG. is a perspective view thereof, and FIGS. 5 and 6 are diagrams illustrating an example of distortion in □ during conveyance of copy paper. 1-Photosensitive drum, 2-Peeling roller, 3-Pressure roller, 42-Peeling belt, 5 Constant fixing roller, 6-Head roller, 1-@Feed roller, 8-Paper guide, 9-Transfer device, 10-Drum drive wheel, 11-sprocket for driving the peeling drum, 12-copying paper.

Claims (1)

【特許請求の範囲】[Claims] （１）感光体ドラム端部に剥離ベルト等による強制剥離
部材および剥離された複写用紙を搬送する剥離ローラを
備えた複写機において、剥離ローラを前記感光体ドラム
周辺部に接して配置したことを特徴とする複写用紙剥離
装置。(1) In a copying machine equipped with a forced peeling member such as a peeling belt at the end of the photoreceptor drum and a peeling roller for conveying the peeled copy paper, the peeling roller is disposed in contact with the peripheral portion of the photoreceptor drum. Characteristic copy paper peeling device.
JP3076185A 1985-02-18 1985-02-18 Copying paper peeling off device Pending JPS61188569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3076185A JPS61188569A (en) 1985-02-18 1985-02-18 Copying paper peeling off device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3076185A JPS61188569A (en) 1985-02-18 1985-02-18 Copying paper peeling off device

Publications (1)

Publication Number Publication Date
JPS61188569A true JPS61188569A (en) 1986-08-22

Family

ID=12312667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3076185A Pending JPS61188569A (en) 1985-02-18 1985-02-18 Copying paper peeling off device

Country Status (1)

Country Link
JP (1) JPS61188569A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537752A2 (en) * 1991-10-15 1993-04-21 Mita Industrial Co. Ltd. Image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537752A2 (en) * 1991-10-15 1993-04-21 Mita Industrial Co. Ltd. Image forming apparatus

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