JPH0279879A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0279879A JPH0279879A JP63231478A JP23147888A JPH0279879A JP H0279879 A JPH0279879 A JP H0279879A JP 63231478 A JP63231478 A JP 63231478A JP 23147888 A JP23147888 A JP 23147888A JP H0279879 A JPH0279879 A JP H0279879A
- Authority
- JP
- Japan
- Prior art keywords
- image carrier
- separated
- engaging
- arm
- transfer material
- 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
Links
- 210000000078 claw Anatomy 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
(1)発明の目的
(産業上の利用分野)
この発明は静電複写機、同プリンタなど静電記録プロセ
スを利用する画像形成装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention (Field of Industrial Application) The present invention relates to an image forming apparatus using an electrostatic recording process, such as an electrostatic copying machine and a printer thereof.
(従来技術と解決すべき課題)
像担持体表面に形成したトナー像を、紙など、通常シー
ト状の転写材に静電的に転写する工程を包含する画像形
T&装置においては、転写のさいに転写材が像担持体に
静電的に吸着傾向となるので、転写後の位置において像
担持体に分離爪を当接させ、これによって像担持体に吸
着する転写材を分離させるようなものが従来からひろく
実用されている。(Prior Art and Problems to be Solved) In an image forming T& device that includes a process of electrostatically transferring a toner image formed on the surface of an image carrier to a sheet-like transfer material such as paper, there is a problem in the transfer process. Since the transfer material tends to be electrostatically attracted to the image carrier, a separation claw is brought into contact with the image carrier at the post-transfer position, thereby separating the transfer material that is attracted to the image carrier. has been widely used in practice.
分離爪は、像担持体に当接する先端が先鋭であるので、
画像形成装置の当該部分の組立時、保守点検時あるいは
摩耗などによって分離爪を交換する場合などには、分離
爪によって像担持体表面を損傷することを避けるために
、転写材搬送部に配設した係合部材と、分離爪を支持す
る支持部材適所に配設した係合部材とを連設し、該搬送
部の変位に応動して分離爪を像担持体から離隔させるよ
うに構成するのが普通であった。The separation claw has a sharp tip that contacts the image carrier, so
When assembling the relevant part of the image forming apparatus, during maintenance inspection, or when replacing the separation claw due to wear, etc., the separation claw should be installed in the transfer material conveying section to avoid damaging the surface of the image carrier by the separation claw. The engaging member disposed at an appropriate position on a support member supporting the separating claw is arranged in series, and the separating claw is separated from the image carrier in response to the displacement of the conveyance section. was common.
ところが、このような仕方では、分離爪をそなえた支持
部材または転写材搬送部を装着組立てるさいに、前記両
係合部材の連設を忘れると、搬送部側の係合部材を介し
て1分離爪支持部材を変位させて分離爪が像担持体に当
接してこれを損傷するおそれがあった。However, with this method, if you forget to connect both of the engaging members when installing and assembling the support member equipped with the separating claw or the transfer material conveying section, one minute separation will occur via the engaging member on the conveying section side. There is a risk that the separation claw may come into contact with the image carrier and damage it by displacing the claw support member.
本発明は、このような現状に対処すべくなされたもので
あって1組立、保守点検などのさい1分離爪支持部材と
転写材搬送部とにそれぞれ配設した係合部材の係合時に
、特段意を用いることなくとも両者が所期のように係合
して前述のような像担持体の損傷を生ずることのないよ
うな画像形成装置を提供することを目的とするものであ
る。The present invention has been made in order to deal with such a current situation, and during one assembly, maintenance inspection, etc., when engaging the engaging members respectively disposed on the separation pawl support member and the transfer material conveying section, It is an object of the present invention to provide an image forming apparatus in which the two are engaged as expected without any special precautions, and the above-mentioned damage to the image carrier does not occur.
(2)発明の構成
(課題を解決する技術手段、その作用)上記の目的を達
成するため、本発明は、可転写トナー像を表面に形成し
た像担持体に転写材を当接して該、トナー像を転写材に
転写するように構成し、転写済みの転写材を像担持体か
ら分離すべく像担持体に当接する方向に弾性的に偏倚す
る分離爪を有する支持部材と1分離した転写材を受容し
てこれを次の工程に搬送する搬送部とをそなえ。(2) Structure of the invention (technical means for solving the problem and its operation) In order to achieve the above object, the present invention provides a method for applying a transfer material to an image bearing member having a transferable toner image formed thereon. A support member configured to transfer a toner image onto a transfer material and having a separation claw that is elastically biased in a direction of contacting the image carrier in order to separate the transferred transfer material from the image carrier; Equipped with a transport section that receives materials and transports them to the next process.
像担持体を含む部材を脱着するさい、前記支持部材に配
設した係合部材と前記搬送部に配設した係合部材との係
合によって、前記搬送部の変位により前記分離爪を像担
持体から離隔させるようにした画像形成装置において、
前記搬送部を装着するさいに、装着にともなう変位によ
って、これに配設した係合部材を、前記支持部材側の係
合部材に自動的に係合させる手段を設けたことを特徴と
するものである。When attaching and detaching the member including the image carrier, the engagement member disposed on the support member and the engagement member disposed on the conveyance section cause the separating claw to hold the image by displacement of the conveyance section. In an image forming apparatus that is separated from the body,
The device is characterized by being provided with means for automatically engaging an engaging member disposed thereon with an engaging member on the supporting member side by displacement accompanying the mounting when the conveying portion is mounted. It is.
このように構成することによって、この種の画像形成装
置の組立、保守点検などのさい、搬送部と、分離爪をそ
なえた支持部材との係合を忘れて分離爪で像担持体を損
傷するよう゛な事態の発生を確実に阻止することが可能
である。With this configuration, when assembling, maintaining and inspecting this type of image forming apparatus, it is possible to forget to engage the conveyance section with the support member provided with the separation claw, and damage the image carrier with the separation claw. It is possible to reliably prevent such a situation from occurring.
(実施例の説明)
第1図は本発明の実施例を示す画像形成装置の要部側面
図である。(Description of Embodiments) FIG. 1 is a side view of essential parts of an image forming apparatus showing an embodiment of the present invention.
図示符号3は回転円筒状に形成された像担持体であって
、その表面にトナー像が形成されるものとし、これに不
図示の転写材が当接し、これも不図示の、たとえば、転
写帯電器などの転写部材の作用によって該トナー像が転
写材に転写され、ついで、転写材は像担持体から分離し
て搬送部1に乗り1図示左方に進行して不図示の定着部
位に搬送されるものとする。Reference numeral 3 denotes an image carrier formed in a rotating cylindrical shape, on the surface of which a toner image is formed. The toner image is transferred to a transfer material by the action of a transfer member such as a charger, and then the transfer material is separated from the image carrier, rides on the conveyance section 1, and advances to the left in the figure to a fixing site (not shown). shall be transported.
前記搬送部1は、駆動入力軸を兼ねる開閉揺動軸2によ
って駆動されるものとし、不図示の開閉機構によって軸
2を中心として図示上下方向に揺動する。The conveyance section 1 is driven by an opening/closing swing shaft 2 which also serves as a drive input shaft, and swings in the vertical direction in the drawings about the shaft 2 by an opening/closing mechanism (not shown).
図示符号5は分1l141JI構のアームであって、軸
7に回動自在に支持されかっばね6によって反時計方向
に回動習性が与えられており、ストッパピン8による規
制範囲内で、付勢ばね10によって、ピン11に軸支し
た分離爪9が像担持体3の表面に当接するように習性付
けられている。Reference numeral 5 denotes an arm having a minute 11141JI structure, which is rotatably supported by a shaft 7 and given the ability to rotate counterclockwise by a spring 6. Within the range regulated by a stopper pin 8, The spring 10 causes the separating claw 9 supported by the pin 11 to come into contact with the surface of the image carrier 3 .
前記搬送部1の側部適所には、搬送部側の係合部材14
が、ガイドピン15によって摺動自在に配設してあり、
該部材14は復帰ばね16によって図示下方に偏倚され
ており、その上部には、ばね19によって一方に偏倚さ
れている揺動係止部材20が取着しである。An engaging member 14 on the side of the conveyance section 1 is provided at a suitable position on the side of the conveyance section 1.
is slidably arranged by a guide pin 15,
The member 14 is biased downwardly in the drawing by a return spring 16, and a pivoting locking member 20, which is biased to one side by a spring 19, is attached to its upper part.
前記分離機構側のアーム5には、分離側の係合部材たる
ピン13が配設してあって、常態においては、該ビン1
3が前記揺動係止部材20に形成した長孔20aに係合
しているものとする。The arm 5 on the separation mechanism side is provided with a pin 13 which is an engagement member on the separation side, and in a normal state, the pin 13 is attached to the arm 5 on the separation mechanism side.
3 is engaged with the elongated hole 20a formed in the swing locking member 20.
このように構成しであるから、搬送部1が、不図示の開
閉機構の発動によって、図示下方に変位すると、係止部
材20を介して係合部材14とビン13とが係合してい
るので、アーム5が図示時計方向に回動して、分離爪9
が像担持体3から離隔することになる。With this configuration, when the conveying section 1 is displaced downward in the drawing by activation of the opening/closing mechanism (not shown), the engaging member 14 and the bottle 13 are engaged with each other via the locking member 20. Therefore, the arm 5 rotates clockwise as shown in the figure, and the separation claw 9
is separated from the image carrier 3.
このとき、゛°復帰ばね16の初張力”を“分離爪9が
像担持体3から一定距#離れたときにばね6に発生する
力によってビン13を介して部材14に作用する力°′
にほぼ等しくしておくと、上記一定距離分離爪9が像担
持体3から離れるまで部材14は摺動することなくアー
ム5を下降させ、その後、搬送部1の下降によって部材
14と搬送部1との間に作用する力は復帰ばね16によ
って吸収されて、アーム5を、はぼ一定位置で回転を停
止させることができる。At this time, ``the initial tension of the return spring 16'' is defined as ``the force acting on the member 14 through the bottle 13 due to the force generated in the spring 6 when the separating claw 9 moves a certain distance away from the image carrier 3''.
, the arm 5 is lowered without the member 14 sliding until the separation claw 9 is separated from the image carrier 3 by a certain distance, and then the transport section 1 is lowered to separate the member 14 and the transport section 1. The force acting between them is absorbed by the return spring 16, and the rotation of the arm 5 can be stopped at an approximately constant position.
第2図は、上記の装置における搬送部1とアーム5の係
合部分のみを示す拡大斜面図である。FIG. 2 is an enlarged perspective view showing only the engaging portion between the conveying section 1 and the arm 5 in the above-mentioned apparatus.
係合部材14の上部は軸17を保持するように巻回され
、また該軸17は係止部材20の端部によっても巻回保
持されてヒンジを形成してあり、さらに、該軸17には
ば、ね19が配設してあって、係止部材20はストッパ
部18の方向に偏位されて安定している。The upper part of the engagement member 14 is wound to hold a shaft 17, and the shaft 17 is also wound and held by the end of the locking member 20 to form a hinge; A spring 19 is provided so that the locking member 20 is deflected in the direction of the stop part 18 and stabilized.
前記部材20には、前述のように、アーム5に配設した
ビン13が係脱する長孔20aが形成してあり、さらに
該部材20の頂部20bは、ビン13から逃る方向に折
曲形成しである。As described above, the member 20 is formed with a long hole 20a into which the bottle 13 disposed on the arm 5 engages and disengages, and the top portion 20b of the member 20 is bent in a direction away from the bottle 13. It is formed.
搬送部と、分離爪をそなえたアーム側とは上記のような
構成によって係合しているから、保守点検などのために
一旦分解されたのち、分離爪を含むアームなどを配設し
たのち、搬送部lを配設上昇させると、前記部材20の
折曲部20bがビン13に当接し、ばね19の作用に抗
して部材20は、第2図左方からみて時計方向に回動し
、さらに搬送部が上昇すると、ビン13が長孔20aに
嵌入して、アーム5側と搬送部1とが係合する。Since the conveyance part and the arm side equipped with the separation claw are engaged with each other in the above-described configuration, after being disassembled for maintenance and inspection etc., and after installing the arm including the separation claw, etc. When the conveying section 1 is raised, the bent portion 20b of the member 20 comes into contact with the bottle 13, and the member 20 rotates clockwise as viewed from the left in FIG. 2 against the action of the spring 19. When the conveying section further rises, the bottle 13 fits into the elongated hole 20a, and the arm 5 side and the conveying section 1 engage with each other.
したがって、これら両者を係合させることを忘れて、分
離爪を像担持体に衝撃的に出接させてこれを損傷するよ
うなことを確実に阻止することができる。Therefore, it is possible to reliably prevent a situation where the separating claw forgets to engage the two and causes the separating claw to come into contact with the image carrier and damage it.
第3図は本発明の他の実施例を示すものであって、前記
実施例の装置と対応する部分には同一の符号を付して示
してあり、それらについてはとくに必要のない限り説明
を省略する。FIG. 3 shows another embodiment of the present invention, in which parts corresponding to the apparatus of the previous embodiment are denoted by the same reference numerals, and explanations thereof will not be given unless particularly necessary. Omitted.
この装置においては、搬送部1側に配設した係合部材1
4を1弾性材料によって一体に構成しである。In this device, an engaging member 1 disposed on the conveying section 1 side
4 are integrally constructed from one elastic material.
したがって、装着時に、搬送部を上昇させると1部材1
4の頂部は、ビン13に当接したときにそれ自体の弾性
によってまず逃げてから、部材14に形成した長孔に係
合することになり、前記の実施例装置と同様の作用を奏
することができる。Therefore, when the conveyance unit is raised during mounting, one member
When the top of the bottle 4 comes into contact with the bottle 13, it first escapes due to its own elasticity and then engages with the elongated hole formed in the member 14, so that the same effect as in the device of the above embodiment is achieved. Can be done.
さらに、図示はしてないが、前記第1図々示の装置にお
いて、部材14のヒンジに相当する部分に切欠を形成し
て当該部分の剛性を下げ、外力に対してヒンジとして作
用するように構成することも可能である。Furthermore, although not shown, in the device shown in the first figure, a notch is formed in the portion of the member 14 corresponding to the hinge to reduce the rigidity of the portion and act as a hinge against external force. It is also possible to configure
(3)発明の詳細
な説明したように、本発明によるときは、電子写真方式
の画像形成装置であって、開閉機構によって、転写材搬
送部を変位させ、これに応動して分離爪を像担持体から
離隔させるようにしたものにおいて、組立時、保守点検
時などに搬送部と分離爪をそなえた部分との係合を自動
的に遂行できるので1分離爪による像担持体の損傷を確
実に阻止することができる。(3) As described in detail, the present invention is an electrophotographic image forming apparatus in which the transfer material conveying section is displaced by the opening/closing mechanism, and in response, the separating claw is moved to the image forming apparatus. When the image carrier is separated from the carrier, the conveying part and the part provided with the separation claw can be automatically engaged during assembly, maintenance and inspection, etc., thereby ensuring that the image carrier is not damaged by the separation claw. can be prevented.
第1図は本発明を適用した画像形成装置の要部側面図。
第2図は同上係合部分の構成を示す拡大斜面図、
第3図は本発明の他の実施例を示す要部側面図である。
1・・・搬送部、3・・・像担持体、5・・拳アーム、
6・・・アーム付勢ばね、9o・・分離爪、13−ψ・
ビン、14・・・係合部材、16・・・復帰ばね、2o
・φ・係止部材。
第1図
第2図
第3図FIG. 1 is a side view of essential parts of an image forming apparatus to which the present invention is applied. FIG. 2 is an enlarged perspective view showing the configuration of the engaging portion of the same as above, and FIG. 3 is a side view of the main part showing another embodiment of the present invention. 1... Conveyance unit, 3... Image carrier, 5... Fist arm,
6...Arm biasing spring, 9o...Separation claw, 13-ψ・
Bin, 14... Engaging member, 16... Return spring, 2o
・φ・Locking member. Figure 1 Figure 2 Figure 3
Claims (1)
接して該トナー像を転写材に転写するように構成し、転
写済みの転写材を像担持体から分離すべく像担持体に当
接する方向に弾性的に偏倚する分離爪を有する支持部材
と、分離した転写材を受容してこれを次の工程に搬送す
る搬送部とをそなえ、像担持体を含む部材を脱着するさ
い、前記支持部材に配設した係合部材と前記搬送部に配
設した係合部材との係合によって、前記搬送部の変位に
より前記分離爪を像担持体から離隔させるようにした画
像形成装置において、 前記搬送部を装着するさいに、装着にともなう変位によ
って、これに配設した係合部材を、前記支持部材側の係
合部材に自動的に係合させる手段を設けたことを特徴と
する画像形成装置。[Scope of Claims] A transfer material is brought into contact with an image carrier on which a transferable toner image is formed to transfer the toner image to the transfer material, and the transferred transfer material is separated from the image carrier. A support member having a separation claw that is elastically biased in a direction to contact the image carrier, and a conveyance unit that receives the separated transfer material and conveys it to the next step, and includes the image carrier. When attaching or detaching the member, the separation claw is separated from the image carrier by displacement of the conveyance section by engagement between an engagement member disposed on the support member and an engagement member disposed on the conveyance section. In the image forming apparatus according to the present invention, there is provided a means for automatically engaging an engaging member disposed thereon with an engaging member on the supporting member side by displacement caused by the mounting when the conveying section is mounted. An image forming apparatus characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63231478A JPH0279879A (en) | 1988-09-17 | 1988-09-17 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63231478A JPH0279879A (en) | 1988-09-17 | 1988-09-17 | Image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0279879A true JPH0279879A (en) | 1990-03-20 |
Family
ID=16924123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63231478A Pending JPH0279879A (en) | 1988-09-17 | 1988-09-17 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0279879A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7655664B2 (en) | 2004-12-17 | 2010-02-02 | Astrazeneca Ab | Hydantoin derivatives as metalloproteinase inhibitors |
US7754750B2 (en) | 2001-03-15 | 2010-07-13 | Astrazeneca Ab | Metalloproteinase inhibitors |
US20110188905A1 (en) * | 2010-01-29 | 2011-08-04 | Tatsuya Shinkawa | Fixing device and image forming apparatus provided with same |
-
1988
- 1988-09-17 JP JP63231478A patent/JPH0279879A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7754750B2 (en) | 2001-03-15 | 2010-07-13 | Astrazeneca Ab | Metalloproteinase inhibitors |
US8153673B2 (en) | 2001-03-15 | 2012-04-10 | Astrazeneca Ab | Metalloproteinase inhibitors |
US7655664B2 (en) | 2004-12-17 | 2010-02-02 | Astrazeneca Ab | Hydantoin derivatives as metalloproteinase inhibitors |
US20110188905A1 (en) * | 2010-01-29 | 2011-08-04 | Tatsuya Shinkawa | Fixing device and image forming apparatus provided with same |
US8526869B2 (en) * | 2010-01-29 | 2013-09-03 | Sharp Kabushiki Kaisha | Fixing device and image forming apparatus provided with same |
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