JPH0261030B2 - - Google Patents
Info
- Publication number
- JPH0261030B2 JPH0261030B2 JP56011652A JP1165281A JPH0261030B2 JP H0261030 B2 JPH0261030 B2 JP H0261030B2 JP 56011652 A JP56011652 A JP 56011652A JP 1165281 A JP1165281 A JP 1165281A JP H0261030 B2 JPH0261030 B2 JP H0261030B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- protrusions
- protruding
- peeling claw
- protrusion
- 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
- 210000000078 claw Anatomy 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 6
- 108091008695 photoreceptors Proteins 0.000 claims description 5
- 238000005452 bending Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000037303 wrinkles Effects 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
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6532—Removing a copy sheet form a xerographic drum, band or plate
Description
【発明の詳細な説明】
本発明は、電子写真複写機の感光体表面あるい
は定着用ロール等のシート移送体の表面に先端を
当接させ、上記各表面に沿つて移動してくるシー
トを各表面から剥離するシート剥離爪に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention brings the tip of the sheet into contact with the surface of a photoconductor of an electrophotographic copying machine or the surface of a sheet transporting body such as a fixing roll, and allows each sheet to be moved along each of the surfaces. This invention relates to a sheet peeling claw that peels off the sheet from the surface.
この種のシート剥離爪には、耐摩耗性に富み、
可撓性を有する合成樹脂その他の材質のシート状
の材料から作られ、感光体表面あるいは定着用ロ
ール等のシート移送体にたわませて当接させ、上
記シート移送体からシートを剥離するようになつ
ているものがあるが、このシート剥離爪は上記シ
ート移送体からのシートの剥離が確実に行なわれ
るようにするために、通常複数個用いられてい
る。これはシート先端の一部でシート移送体から
の剥がし遅れが生じて剥離ミスが置きるのを防ぐ
ためである。剥離するシートのサイズが大きくな
れば、また複写スピーデが速くなればなるに従つ
てシートを確実に剥離するためにはより多くの剥
離爪が必要になつてくる。 This type of sheet peeling claw has high wear resistance,
It is made of a sheet-like material made of flexible synthetic resin or other material, and is bent and brought into contact with the surface of a photoreceptor or a sheet transporting body such as a fixing roll, so that the sheet is peeled from the sheet transporting body. However, a plurality of sheet peeling claws are usually used to ensure that the sheet is peeled off from the sheet transporting body. This is to prevent a peeling error from occurring due to a delay in peeling off a part of the leading edge of the sheet from the sheet conveying body. As the size of the sheet to be peeled increases and as the copying speed increases, more peeling claws are required to reliably peel the sheet.
しかしながらこれらの剥離爪は、従来のように
１個、１個作り、何個かの剥離爪を支持体に組付
けていたのでは、その組立てに手間がかかり、組
立て工数が増えてコストが高くなるばかりではな
く、作業ミスによつて剥離爪の取付けが不ぞろい
になつて、剥離爪がシート移送体表面に一様に当
接せず、剥離ミスが生じる可能性がある。また部
品数が増えるので部品の管理も大変である。 However, the conventional method of manufacturing these peeling claws one by one and assembling several peeling claws to a support is time-consuming, increases assembly man-hours, and increases costs. Not only this, but also the peeling claws may be attached unevenly due to a work error, and the peeling claws may not uniformly contact the surface of the sheet conveying body, which may result in a peeling error. Furthermore, as the number of parts increases, it becomes difficult to manage the parts.
これに対して、可撓性を有するシート状材料に
て基部と複数個の突出部とを一体成形してなるシ
ート剥離爪が実開昭53−117249号公報にて知られ
ている。 On the other hand, a sheet peeling claw is known from Japanese Utility Model Application Publication No. 117249/1983, which has a base portion and a plurality of protruding portions integrally molded from a flexible sheet-like material.
この公知例におけるシート剥離爪は、一枚の板
バネを屈曲して基端部に相当する側を支持部と
し、かつ他方の側に複数個のスリツトにて複数個
の突出部を形成した構成となつている。この従来
例によれば、複数個の突出部が一体成形されてい
るので、この突出部を個々に成形して支持体に取
付けるようにした上記従来例のような問題はない
が、この公知例のものはスリツトによつて突出部
が構成しているため、突出部相互間の空間が狭
く、従つて突出部全体の面積が大きいため、この
突出部の先端をシート移送体表面に所定の撓ませ
姿勢で押付けようにすると大きな撓ませ力を必要
とする問題があり、また各突出部を幅の狭まいス
リツトにて成形しているため、このスリツトによ
るエツジ効果により、基部及び突出部の根元部の
強度が低くなり、長時間の使用によつて突出部の
根元部にへたりが生じるという問題があつた。 The sheet peeling claw in this known example has a structure in which a single plate spring is bent, the side corresponding to the proximal end is used as a support part, and the other side is formed with a plurality of protrusions formed by a plurality of slits. It is becoming. According to this conventional example, since the plurality of protrusions are integrally molded, there is no problem like the above conventional example in which the protrusions are individually molded and attached to the support body, but this known example Since the protrusions are formed by slits, the space between the protrusions is narrow, and the area of the entire protrusion is large. If you try to press it in a horizontal position, there is a problem that a large bending force is required, and since each protrusion is formed with narrow slits, the edge effect of these slits will cause the base and the root of the protrusion to There was a problem in that the strength of the protruding part was reduced and the base of the protruding part became sagging due to long-term use.
本発明は上記のことにかんがみなされたもの
で、基部と複数個の突出部とを可撓性を有するシ
ート状材料にて成形してなり、上記突出部を感光
体あるいは定着用ロール等のシート移送体の表面
に撓ませて当接させるシート剥離爪を用い、少な
い付勢力にて各突出部を所定の撓み姿勢にてシー
ト移送体の表面に押付けることができると共に、
基部及び突出部の根元部の強度が高く、突出部の
根元部のへたりをなくして耐久性の向上を図るこ
とができるシート剥離爪を提供しようとするもの
である。 The present invention has been made in view of the above, and includes a base and a plurality of protrusions formed of a flexible sheet-like material, and the protrusions are attached to a sheet such as a photoreceptor or a fixing roll. By using a sheet peeling claw that is bent and brought into contact with the surface of the sheet transport body, each protrusion can be pressed against the surface of the sheet transport body in a predetermined deflection posture with a small urging force, and
It is an object of the present invention to provide a sheet peeling claw that has high strength at the base and the root portion of the protruding portion, and can improve durability by eliminating fatigue at the root portion of the protruding portion.
本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described based on the drawings.
第１図は本発明に係るシート剥離爪の一例を示
すものであり、このシート剥離爪は耐摩耗性に富
み、かつ可撓性を有するシート状材料にて基部１
と、感光体あるいは定着用ロール等のシート移送
体表面に当接する複数個の突出部２，２，……と
を一体成形した構成となつている。上記各突出部
２，２，……はこれらの間に非突出部２ａ，２
ａ，……を有して所定間隔をあけて設けられてい
る。各非突出部２ａには、上記突出部２の根元部
の両側に位置するとともに当該突出部２の側縁に
沿う延長線上を一側縁としかつ底部が円弧状に形
成された巾狭の切欠き溝２ｂが設けられている。
そして上記基部１の平面には両面テープ３が貼り
付けられており、突出部２，２……が所定の圧力
でシート移送体である感光体４あるいは定着用ロ
ール１０の表面に当接してシート剥離爪の突出部
２，２，……に一定量のたわみが生じるような位
置に取付けられるように配置された支持部材７に
貼り付けられる（第２図、第３図）。 FIG. 1 shows an example of a sheet peeling claw according to the present invention.
and a plurality of protruding parts 2, 2, . The above-mentioned protrusions 2, 2, . . . are interposed between non-protrusions 2a, 2.
a, . . . are provided at predetermined intervals. Each non-protruding part 2a has a narrow cut which is located on both sides of the root of the protruding part 2, has one side edge on an extension line along the side edge of the protruding part 2, and has an arcuate bottom. A notch groove 2b is provided.
A double-sided tape 3 is attached to the flat surface of the base 1, and the protrusions 2, 2, . It is attached to a support member 7 arranged in such a way that a certain amount of deflection occurs in the protruding parts 2, 2, .
なお図中５は転写用帯電器、６は除電用帯電
器、８は転写部より定着部へシートを搬送するシ
ート搬送部材、９はシート、１１はシート案内板
をそれぞれ示す。 In the figure, 5 is a charger for transfer, 6 is a charger for neutralization, 8 is a sheet conveyance member for conveying the sheet from the transfer section to the fixing section, 9 is a sheet, and 11 is a sheet guide plate, respectively.
上記構成において、シート剥離爪は第２図、第
３図に示すように、感光体４あるいは定着用ロー
ル１０に突出部２，２，……が撓む方向に取り付
けられる。そして感光体４あるいは定着用ロール
１０の表面に沿つて移動してきたシート９の先端
が突出部２，２，……の先端に衝突して感光体４
あるいは定着用ロール１０の表面から剥離してシ
ート搬送部材８あるいはシート案内板１１へ移送
される。 In the above configuration, the sheet peeling claw is attached to the photoreceptor 4 or the fixing roll 10 in the direction in which the protrusions 2, 2, . . . are bent, as shown in FIGS. 2 and 3. Then, the leading edge of the sheet 9 that has moved along the surface of the photoconductor 4 or the fixing roll 10 collides with the tips of the protrusions 2, 2, . . .
Alternatively, the sheet is peeled off from the surface of the fixing roll 10 and transferred to the sheet conveying member 8 or the sheet guide plate 11.
このとき、シート剥離爪は突出部２，２，……
だけがシート移送体に当接して撓ませられ、しか
も、この突出部２，２，……は、これの相互の間
に非突出部２ａを有して互いに離間して設けられ
ていることにより、撓み変形する部分の面積はシ
ート移送体の長さ方向の長さの割には少なく、こ
のため少ない付勢力にて各突出部２，２……を所
定の撓み姿勢にてシート移送体の表面に押し付け
られる。 At this time, the sheet peeling claws are attached to the protrusions 2, 2, . . .
Only the projecting portions 2, 2, . The area of the portion that is bent and deformed is small compared to the length of the sheet transporting body in the longitudinal direction. Therefore, with a small urging force, each protrusion 2, 2... can be bent in a predetermined bending posture of the sheet transporting body. pressed against the surface.
また、このシート剥離爪の各突出部２，２……
をシート移送体の表面に押し付けたときに、各突
出部２，２……の間の非突出部２ａ，２ａ，……
は、これのそれぞれの両側部に設けられた切欠き
溝２ｂ，２ｂ，……により上記各突出部２，２…
…のようには撓まず、むしろ第２図、第３図に示
すように各突出部２，２……とは逆方向（上側）
に変形し、この非突出部２ａ，２ａ，……の先端
がシート剥離爪の下側面に沿つて移動するシート
９の邪魔になることがない。また各突出部２，
２，……の根元部と非突出部２ａ，２ａ，……と
の間に底部が円弧状の切欠き溝２ｂがあることに
より、各突出部２，２，……が撓んだときにも、
この突出部２，２，……の根元部に応力が集中す
ることがなく、突出部２，２，……のへたりが防
止される。 Moreover, each protruding part 2, 2 of this sheet peeling claw...
When pressed against the surface of the sheet transport body, the non-protruding parts 2a, 2a, . . . between the respective protruding parts 2, 2...
is formed by the notch grooves 2b, 2b, . . . provided on each side of the projections 2, 2...
It does not bend like..., but rather in the opposite direction (upper side) to each protrusion 2, 2... as shown in Figures 2 and 3.
The tips of the non-projecting portions 2a, 2a, . . . do not get in the way of the sheet 9 moving along the lower surface of the sheet peeling claw. In addition, each protrusion 2,
2,... Since there is a notch groove 2b with an arcuate bottom between the root part and the non-protruding parts 2a, 2a,..., when each of the protruding parts 2, 2,... is bent, too,
Stress is not concentrated at the root portions of the protrusions 2, 2, . . . and the protrusions 2, 2, . . . are prevented from becoming sagging.
シート剥離爪の形状はその突出部２，２，……
の形状を含め何ら限定されるものではなく、剥離
性、加工上あるいは取扱い上から突出部２，の形
状を第４図に示す如く、ａ先端部を鋭角にしてや
や丸み形状をもたせる、ｂ先端部全体に丸み形状
をもたせる、ｃ先端部を平坦状に形成し、その角
部に丸み形状をもたせるようにしてもよく、また
支持部材７への取付けも両面テープに限るもので
はなく、第５図に示すようにビス１２で止めるよ
うにしてもよい。 The shape of the sheet peeling claw is its protrusion 2, 2,...
The shape of the protrusion 2 is not limited in any way, including the shape of the tip, but from the viewpoint of removability, processing, and handling, the shape of the protruding portion 2 is as shown in FIG. The entire portion may have a rounded shape, the tip portion may be formed flat, and the corners thereof may be provided with a rounded shape, and attachment to the support member 7 is not limited to double-sided tape. It may be fastened with screws 12 as shown in the figure.
さらに本発明に係るシート剥離爪は常時シート
移送体表面に当接させたままで使用する場合に限
るものではなく、シート９の送りに同期してシー
ト移送体表面に間欠的に当接するようにしてもよ
い。 Furthermore, the sheet peeling claw according to the present invention is not limited to the case where it is always in contact with the surface of the sheet transporting body, but can be used intermittently in contact with the surface of the sheet transporting body in synchronization with the feeding of the sheet 9. Good too.
またこのシート剥離爪の各突出部２，２，……
は第６図の各図に示すように、その断面形状を円
弧状に彎曲あるいは断面コ字状にしてもよい。 Also, each protrusion 2, 2,... of this sheet peeling claw
As shown in each figure in FIG. 6, the cross-sectional shape may be curved in an arc shape or the cross-sectional shape may be U-shaped.
本発明に係るシート剥離爪を構成する材質は耐
摩耗性に富み、可撓性を有するものであれば何ら
限定されるものではないが、上記性質を有するプ
ラスチツクのほかに、縦弾性係数が10×103〜30
×103Kg／mm2の金属材料を用いてもよい。 The material constituting the sheet peeling claw according to the present invention is not limited in any way as long as it is highly abrasion resistant and flexible; ×10 3 ~ 30
×10 3 Kg/mm 2 metal material may be used.
本発明は以上のようになるから、少ない付勢力
にて各突出部２，２，……を所定の撓み姿勢にて
シート移送体の表面に押し付けることができると
共に、上記突出部２，２，……と一体構成の基部
の強度も高くなり、突出部２，２，……の根元部
のへたりをなくして耐久性の向上を図ることがで
きる。また本発明におけるシート剥離爪にあつて
は各突出部２，２，……の間の非突出部２ａ，２
ａ，……は、突出部２，２，……とは相対的に逆
方向に変形するので、この非突出部２ａ，２ａ，
……がシートの移送の邪魔になることがなく、シ
ート移送体表面より剥離されたシートはシワが発
生することなくスムーズに移送される。 Since the present invention is as described above, it is possible to press each of the protrusions 2, 2, . . . . The strength of the base integrated with . Moreover, in the case of the sheet peeling claw in the present invention, the non-protruding parts 2a, 2 between the respective protruding parts 2, 2, .
a, . . . are deformed in the opposite direction relative to the protruding portions 2, 2, .
... does not get in the way of sheet transport, and the sheet peeled off from the surface of the sheet transporter is smoothly transported without wrinkles.
第１図は本発明に係るシート剥離爪の斜視図、
第２図、第３図は使用状態の説明図、第４図ａ，
ｂ，ｃはシート剥離爪の形状の実施例図、第５図
は取付け構造の他の実施例図、第６図は突出部の
断面形状の他の実施例を示す斜視図である。
１は基部、２は突出部、２ａは非突出部、２ｂ
は切欠き溝、４は感光体、１０は定着用ロール。
FIG. 1 is a perspective view of a sheet peeling claw according to the present invention;
Figures 2 and 3 are explanatory diagrams of usage conditions, Figure 4 a,
b and c are views showing an example of the shape of the sheet peeling claw, FIG. 5 is a view of another example of the mounting structure, and FIG. 6 is a perspective view showing another example of the cross-sectional shape of the projection. 1 is the base, 2 is the protruding part, 2a is the non-protruding part, 2b
4 is a notch groove, 4 is a photoreceptor, and 10 is a fixing roll.
Claims (1)
部２とを可撓性を有するシート状材料にて形成
し、上記突出部２を、該突出部２の相互間に位置
する非突出部２ａを隔てて互いに離間して設け、
上記非突出部２ａに、上記突出部２の根元部の両
側に位置するとともに当該突出部２の側縁に沿う
延長線上を一側縁とする底部が円弧状の切欠き溝
２ｂを設けてなり、前記突出部２の先端を感光体
４あるいは定着用ロール１０等のシート移送体の
表面に撓ませて当接させることを特徴とするシー
ト剥離爪。1 A base 1 and a plurality of protrusions 2 protruding from the base 1 are formed of a flexible sheet-like material, and the protrusions 2 are formed into non-protrusions located between the protrusions 2. 2a and spaced apart from each other,
The non-protruding portion 2a is provided with a notch groove 2b located on both sides of the root portion of the protruding portion 2 and having an arc-shaped bottom portion having one side edge on an extension line along the side edge of the protruding portion 2. A sheet peeling claw characterized in that the tip of the protrusion 2 is bent and brought into contact with the surface of a sheet transporting body such as a photoreceptor 4 or a fixing roll 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1165281A JPS57125957A (en) | 1981-01-30 | 1981-01-30 | Sheet peeling pawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1165281A JPS57125957A (en) | 1981-01-30 | 1981-01-30 | Sheet peeling pawl |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57125957A JPS57125957A (en) | 1982-08-05 |
| JPH0261030B2 true JPH0261030B2 (en) | 1990-12-18 |
Family
ID=11783887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1165281A Granted JPS57125957A (en) | 1981-01-30 | 1981-01-30 | Sheet peeling pawl |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57125957A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4771310A (en) * | 1987-05-15 | 1988-09-13 | Xerox Corporation | Stripper finger mechanism for effecting removal of a record medium from a roll member |
| JPH0747465B2 (en) * | 1991-12-06 | 1995-05-24 | 正己 入来院 | Hanging locking device |
| JPH0632516A (en) * | 1992-07-13 | 1994-02-08 | Mita Ind Co Ltd | Sheet separating device |
| JP2529535B2 (en) * | 1994-05-13 | 1996-08-28 | 正己 入来院 | Hanging locking device |
| JP2015175872A (en) * | 2014-03-13 | 2015-10-05 | 株式会社リコー | Fixing apparatus and image forming apparatus including the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410745B2 (en) * | 1975-08-27 | 1979-05-09 | ||
| JPS5420147B2 (en) * | 1974-04-08 | 1979-07-20 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131337Y2 (en) * | 1977-01-28 | 1986-09-11 | ||
| JPS5622214Y2 (en) * | 1977-02-23 | 1981-05-25 | ||
| JPS5410745U (en) * | 1977-06-24 | 1979-01-24 | ||
| JPS5420147U (en) * | 1977-07-12 | 1979-02-08 |
-
1981
- 1981-01-30 JP JP1165281A patent/JPS57125957A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5420147B2 (en) * | 1974-04-08 | 1979-07-20 | ||
| JPS5410745B2 (en) * | 1975-08-27 | 1979-05-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57125957A (en) | 1982-08-05 |
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