JP4139248B2 - Separation conveyance type document reading device with manual feed function - Google Patents

Separation conveyance type document reading device with manual feed function Download PDF

Info

Publication number
JP4139248B2
JP4139248B2 JP2003044592A JP2003044592A JP4139248B2 JP 4139248 B2 JP4139248 B2 JP 4139248B2 JP 2003044592 A JP2003044592 A JP 2003044592A JP 2003044592 A JP2003044592 A JP 2003044592A JP 4139248 B2 JP4139248 B2 JP 4139248B2
Authority
JP
Japan
Prior art keywords
pressure
roller
document
separation
manual 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 - Fee Related
Application number
JP2003044592A
Other languages
Japanese (ja)
Other versions
JP2004254210A (en
Inventor
政志 君島
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2003044592A priority Critical patent/JP4139248B2/en
Publication of JP2004254210A publication Critical patent/JP2004254210A/en
Application granted granted Critical
Publication of JP4139248B2 publication Critical patent/JP4139248B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、スキャナ、ファクシミリ、複合機における手差し機能付き分離搬送式原稿読み取り装置に関するものである。
【0002】
【従来の技術】
手差し機能付き分離搬送式原稿読み取り装置は従来から知られている(例えば、特許文献1および特許文献2参照)。
【0003】
図3は一般的な手差し機能付き分離搬送式原稿読み取り装置を説明する概略図である。図4は図3の一般的な手差し機能付き分離搬送式原稿読み取り装置の要部を拡大して示す概略図である。
【0004】
図3および図4において、フィードローラ1は複数枚の原稿束2の最下紙を1枚づつ分離し、繰り出し、搬送する。分離パッド3は最下紙以外の原稿を押さえるために設けられ弾性摩擦部材で作られている。ホルダ4は分離パッド3を保持し、そして分離パッド3をフィードローラ1に押圧する分離ばね5が配置されている。
【0005】
摺動部材からなる補助搬送板ばね18が分離前のプリフィードを行うために設けられる。手差し機能は、ステープルされていたり、糊付けされている原稿束を分離せず搬送したい場合や、写真原稿などの分離負荷(バックテンション)を与えたくない原稿を1枚づつ読み取る場合に用いるため、通常は上述のようにフィードローラ1に押圧されている分離パッド3の加圧力を解除する機能である。
【0006】
解除レバー19を押し込むことによりこの解除レバー19の先端がホルダ4のピン17を押し上げ、分離圧が解除される(図4が分離圧を解除した状態図)。このときの原稿搬送は、補助搬送板ばね18により行われるが、この補助搬送板ばね18は摺動部材でできているため、搬送に対しほとんど負荷とならない。
【0007】
原稿分離部Bから繰り出された原稿はそのまま下ガイド板6および上ガイド板7に案内され、原稿読み取り部Aで原稿を搬送する上下1対の読み取り搬送ローラ部10および対向コロ11を介して、イメージセンサスキャナ8と原稿位置検出センサ部9に送られ、読み取りが行われて、上下1対の排出ローラ13および対向コロ14にて装置外へ排出される。
【0008】
この読み取り搬送ローラ10および排出ローラ13の搬送力は各々の対向コロ11、14の回転軸12、15を押圧する板ばね16の加圧力により得られる訳であるが、とくに読み取りローラ10の搬送力は分離部でのバックテンション(原稿搬送に対する負荷)に対し十分な搬送力が無いと、スリップが発生し、狙いの搬送速度が出ず、結果として読み取り画像の縮率が狂ってしまう。
【0009】
しかしながら、この読み取りローラ10の搬送力(加圧力)が大きくなれば副作用として読み取り原稿後端が読み取りローラ10およびその対向コロ11のニップを抜けるさいにニップ吐き出し力(ニップから原稿後端を押し出す力)が増大し、瞬間的に原稿の移動速度が増加し、読み取り画像に「画像ズレ」が発生してしまう。
【0010】
図5は画像ズレの発生する状態を示す説明図である。図に示すごとく、その画像ズレは原稿後端が読み取りローラ10およびその対向コロ11のニップにあるときのイメージセンサスキャナ8の読み取り位置上(その距離をαとする)に発生する。
【0011】
「画像ズレ」とは瞬間的に搬送されている原稿の移動速度が狙い値より早くなることにより、本来読み取るべき副走査線の数本を読み飛ばしてしまうことである。
【0012】
図6は斜め線の書かれた本来の画像の状態を説明する図である。図7は斜め線の書かれた画像を読み取ったさいの「画像ズレ」の発生例を含んでいる状態において示す図である。
【0013】
【特許文献1】
特開2001−310843号公報
【特許文献2】
特開2001−171855号公報
【0014】
【発明が解決しようとする課題】
上述したごとく、従来の分離搬送式原稿読み取り装置では分離部下流にある画像読み取り部の搬送ローラ搬送力は原稿分離部の搬送負荷(バックテンション)を考慮し読み取り画像縮率が規定の状態になるよう(スリップの無いよう)に設定されているため、本来原稿を1枚搬送するのに必要な搬送力よりかなり大きい搬送力になっている。
【0015】
その副作用として画像読み取り部の搬送ローラニップを抜けるさいにニップ吐き出し力(ニップから原稿後端を押し出す力)が増大し、瞬間的に原稿の移動速度が増加し、読み取り画像に「画像ズレ」が発生してしまう。
【0016】
そこで本発明の目的は、上記の問題点を解決するために、分離圧解除と同一操作により画像読み取り部の搬送ローラの加圧力の切り替えを行え、操作数の増加をなくせる手差し機能付き分離搬送式原稿読み取り装置を提供することにある。
【0017】
【課題を解決するための手段】
請求項1記載の発明は、原稿束から原稿を分離パッドで一枚づつ分離し、フィードローラで原稿読み取り部に搬送する機能と、手差し機能とを備えた手差し機能付分離搬送式原稿読み取り装置において、手差しセット時に前記分離パッドのフィードローラに対する加圧力を解除する解除レバーと、前記原稿読み取り部に原稿を搬送する搬送ローラと、前記搬送ローラに圧接した加圧コロと、前記加圧コロを前記搬送ローラに押圧する2つの加圧ばねを有し、前記原稿束からの原稿搬送時に、上記2つの加圧ばねにより前記加圧コロを押圧し、手差し搬送時に、上記2つのばねのうちの一方の加圧ばねの加圧コロに対する加圧力の解除を、前記分離パッドの解除と同時に、前記解除レバーにより行うことを特徴とする。
【0018】
請求項2記載の発明は、原稿束から原稿を分離パッドで一枚づつ分離し、フィードローラで原稿読み取り部に搬送する機能と、手差し機能とを備えた手差し機能付分離搬送式原稿読み取り装置において、手差しセット時に前記分離パッドのフィードローラに対する加圧力を解除する解除レバーと、前記原稿読み取り部に原稿を搬送する搬送ローラと、前記搬送ローラに圧接した加圧コロと、前記加圧コロを前記搬送ローラに押圧する主加圧ばねと補助加圧ばねとを有し、前記原稿束からの原稿搬送時に、上記2つの加圧ばねにより前記加圧コロを押圧し、手差し搬送時に、主加圧ばねの加圧コロに対する加圧力の解除を、前記分離パッドの解除と同時に、前記解除レバーにより行うことを特徴とする請求項1記載のことを特徴とする。
【0019】
請求項3記載の発明は、請求項1または2記載の手差し機能付分離搬送式原稿読み取り装置において、2 つの加圧ばねが、板ばねであることを特徴とする
【0020】
【発明の実施の形態】
以下、図面により本発明の実施の形態を詳細に説明する。図1は本発明による手差し機能付き分離搬送式原稿読み取り装置の実施の形態をファクシミリの原稿読み取り装置として示す概略図である。図2は図1の手差し機能付き分離搬送式原稿読み取り装置の要部を手差し時の状態において拡大して示す概略図である。
【0021】
本発明の原稿搬送装置は分離圧を解除する手差し搬送時に分離部負荷によるバックテンションを考慮して設定された読み取り搬送ローラの加圧力を、手差し時は分離部のバックテンションが無いため、原稿1枚を搬送するのに必要最小限の搬送力となる加圧力に切り替えられ、読み取り搬送ローラの対向コロの不必要な加圧力による「画像ズレ」を低減するものである。
【0022】
図1および図2に示すとおり、本発明と上述した従来の手差し機能付き原稿読み取り装置の違いは、読み取り搬送ローラ10の加圧コロ11の回転軸12を押圧する加圧板ばねが2部品構成となっていることである。
【0023】
なお、図1および図2の本発明による手差し機能付き分離搬送式原稿読み取り装置の実施の形態において、図3および図4において既述した一般的な手差し機能付き分離搬送式原稿読み取り装置と対応する部分には同一の参照番号を付して詳細な説明は省略している。
【0024】
この加圧板ばねの2部品構成において、通常の原稿分離を行う場合(バックテンション有りの状態)には、主板ばね16と補助加圧ばね20の両者が回転軸12を押圧し、搬送力を出す。
【0025】
単品の加圧板ばねの加圧力を変化させると加圧力のバラツキが大きくなるが、加圧板ばねを2部品構成にすることによって、各々の設定された(部品そのものの)加圧力をばらつき無く発生させることができる。
【0026】
手差し時は上述した従来技術におけると同様に解除レバー19を押し込むことによってこの解除レバー19の傾斜部19aがホルダ4のピン17を押し上げ、分離圧が解除される。
【0027】
本発明の実施の形態ではレバー19を読み取り搬送ローラ10の対向コロ11の主加圧板ばね16まで延長し、この延長部19bによって分離圧の解除と同様にこの主加圧板ばね16先端を押し上げる。
【0028】
主加圧板ばね16によって加圧コロ11の加圧力を解除し、追加した補助加圧板ばね20のみによる加圧にすることができ、従来発生していた読み取り搬送ローラの加圧のし過ぎによる「画像ズレ」を低減することができる。
【0029】
【発明の効果】
以上説明したように、本発明によれば手差し機能使用時のように分離負荷(バックテンション)が無い状態では、読み取り搬送ローラの搬送力を搬送スリップの無い必要最小限に設定することができ、ニップ吐き出し力を低減することにより「画像ズレ」を低減することができる。
【0030】
さらに、加圧板ばねの1部品(原稿分離搬送時用主板ばね)の加圧力を変化させることによる加圧力のバラツキの発生を除去することができる。
【図面の簡単な説明】
【図1】本発明による手差し機能付き分離搬送式原稿読み取り装置の実施の形態をファクシミリの原稿読み取り装置として示す概略図である。
【図2】図1の手差し機能付き分離搬送式原稿読み取り装置の要部を手差し時の状態において拡大して示す概略図である。
【図3】一般的な手差し機能付き分離搬送式原稿読み取り装置を説明する概略図である。
【図4】図3の一般的な手差し機能付き分離搬送式原稿読み取り装置の要部を拡大して示す概略図である。
【図5】画像ズレの発生する状態を示す説明図である。
【図6】斜め線の書かれた本来の画像の状態を説明する図である。
【図7】斜め線の書かれた画像を読み取ったさいの「画像ズレ」の発生例を含んでいる状態において示す図である。
【符号の説明】
A 画像読み取り部
B 原稿分離部
10 搬送ローラ
16 主加圧板ばね(切り換え手段)
19 解除レバー
19b 解除レバーの延長部(一体部品)
20 補助加圧板ばね(切り換え手段)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a separation conveyance type document reading apparatus with a manual feed function in a scanner, a facsimile machine, and a multifunction machine.
[0002]
[Prior art]
2. Description of the Related Art A separation conveyance type document reading apparatus with a manual feed function has been conventionally known (see, for example, Patent Document 1 and Patent Document 2).
[0003]
FIG. 3 is a schematic diagram for explaining a general separation conveyance type document reading apparatus with a manual feed function. FIG. 4 is an enlarged schematic view showing a main part of the general separation / conveyance type document reading apparatus with manual feeding function shown in FIG.
[0004]
3 and 4, the feed roller 1 separates the lowermost sheets of the plurality of document bundles 2 one by one, and feeds out and conveys them. The separation pad 3 is provided to hold a document other than the bottom sheet and is made of an elastic friction member. The holder 4 holds the separation pad 3, and a separation spring 5 that presses the separation pad 3 against the feed roller 1 is disposed.
[0005]
An auxiliary conveying leaf spring 18 made of a sliding member is provided for pre-feeding before separation. The manual feed function is usually used for transporting stapled or glued original bundles without separating them, or for scanning originals that do not require separation load (back tension) such as photo originals one by one. Is a function for releasing the pressure applied to the separation pad 3 pressed against the feed roller 1 as described above.
[0006]
When the release lever 19 is pushed in, the tip of the release lever 19 pushes up the pin 17 of the holder 4 and the separation pressure is released (FIG. 4 is a state diagram in which the separation pressure is released). The original conveyance at this time is performed by the auxiliary conveyance plate spring 18, but the auxiliary conveyance plate spring 18 is made of a sliding member and therefore hardly causes a load on conveyance.
[0007]
The document fed out from the document separation unit B is guided as it is to the lower guide plate 6 and the upper guide plate 7, and passes through a pair of upper and lower reading conveyance roller units 10 and opposed rollers 11 that convey the document by the document reading unit A. The image is sent to the image sensor scanner 8 and the document position detection sensor unit 9 for reading, and is discharged out of the apparatus by a pair of upper and lower discharge rollers 13 and a counter roller 14.
[0008]
The conveying force of the reading and conveying roller 10 and the discharge roller 13 is obtained by the pressing force of the leaf spring 16 that presses the rotating shafts 12 and 15 of the opposing rollers 11 and 14. If there is not sufficient conveying force with respect to the back tension (load on the document conveying) in the separation unit, slip occurs, the target conveying speed does not come out, and as a result, the reduction ratio of the read image is out of order.
[0009]
However, if the conveying force (pressing force) of the reading roller 10 is increased, as a side effect, the nip discharge force (the force for pushing the trailing edge of the document from the nip) when the trailing edge of the reading document exits the nip of the reading roller 10 and the opposing roller 11 is a side effect. ) Increases, the speed of movement of the original increases instantaneously, and “image shift” occurs in the read image.
[0010]
FIG. 5 is an explanatory diagram showing a state in which image displacement occurs. As shown in the figure, the image misalignment occurs on the reading position of the image sensor scanner 8 (the distance is α) when the trailing edge of the document is at the nip between the reading roller 10 and the opposing roller 11.
[0011]
“Image misalignment” refers to skipping some of the sub-scan lines that should be originally read because the moving speed of the document being transported instantaneously becomes faster than the target value.
[0012]
FIG. 6 is a diagram for explaining the state of an original image in which diagonal lines are written. FIG. 7 is a diagram showing a state including an example of occurrence of “image shift” when an image with diagonal lines is read.
[0013]
[Patent Document 1]
JP 2001-310843 A [Patent Document 2]
JP 2001-171855 A
[Problems to be solved by the invention]
As described above, in the conventional separation conveyance type document reading apparatus, the conveyance roller conveyance force of the image reading unit downstream of the separation unit takes into consideration the conveyance load (back tension) of the document separation unit, and the read image reduction ratio is in a specified state. Therefore, the conveyance force is considerably larger than the conveyance force originally necessary for conveying one original.
[0015]
As a side effect, the nip discharge force (force that pushes the trailing edge of the document out of the nip) increases as it passes through the conveyance roller nip of the image reading unit, the moving speed of the document increases instantaneously, and "image misalignment" occurs in the scanned image Resulting in.
[0016]
Therefore, in order to solve the above problems, the object of the present invention is to perform separation conveyance with a manual feed function that can switch the pressure applied to the conveyance roller of the image reading unit by the same operation as the separation pressure release and eliminate the increase in the number of operations. It is to provide a type document reading apparatus.
[0017]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a separation conveyance type document reading apparatus with a manual feed function, which has a function of separating a document from a document bundle one by one with a separation pad and conveying the document to a document reading unit with a feed roller, and a manual feeding function. A release lever that releases pressure applied to the feed roller of the separation pad during manual setting, a conveyance roller that conveys the document to the document reading unit, a pressure roller that is in pressure contact with the conveyance roller, and the pressure roller There are two pressure springs that press against the conveying roller, and when the original is conveyed from the original bundle, the pressure roller is pressed by the two pressure springs, and one of the two springs is manually conveyed. The pressure applied to the pressure roller of the pressure spring is released by the release lever simultaneously with the release of the separation pad.
[0018]
According to a second aspect of the present invention, there is provided a separation conveyance type document reading apparatus with a manual feed function, which has a function of separating a document from a document bundle one by one with a separation pad and conveying the document to a document reading unit with a feed roller, and a manual feeding function. A release lever that releases pressure applied to the feed roller of the separation pad during manual setting, a conveyance roller that conveys the document to the document reading unit, a pressure roller that is in pressure contact with the conveyance roller, and the pressure roller It has a main pressure spring and an auxiliary pressure spring that presses against the conveying roller, and presses the pressure roller with the two pressure springs when the original is conveyed from the original bundle, and main pressure is applied during manual conveyance. The release force applied to the pressure roller of the spring is released by the release lever simultaneously with the release of the separation pad.
[0019]
According to a third aspect of the present invention, in the separation-conveyance type document reading device with a manual feed function according to the first or second aspect , the two pressure springs are leaf springs .
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of a separation conveyance type document reading apparatus with a manual feed function according to the present invention as a facsimile document reading apparatus. FIG. 2 is a schematic view showing an enlarged main part of the separation conveyance type document reading apparatus with a manual feed function of FIG. 1 in a state of manual feed.
[0021]
The document conveying apparatus according to the present invention applies the pressing force of the reading conveyance roller set in consideration of the back tension due to the separation unit load at the time of manual conveyance for releasing the separation pressure, and the separation unit does not have the back tension at the time of manual feeding. The applied pressure is switched to the minimum necessary conveying force for conveying the sheet, and “image shift” due to unnecessary pressing force of the opposing roller of the reading conveying roller is reduced.
[0022]
As shown in FIGS. 1 and 2, the difference between the present invention and the above-described conventional document reading device with manual feed function is that the pressure leaf spring that presses the rotating shaft 12 of the pressure roller 11 of the reading conveyance roller 10 has two parts. It is that.
[0023]
1 and FIG. 2 according to the embodiment of the separation conveyance type document reading device with manual feeding function according to the present invention corresponds to the general separation conveyance type document reading device with manual feeding function described in FIGS. 3 and 4. Parts are denoted by the same reference numerals, and detailed description is omitted.
[0024]
In the two-part configuration of the pressure plate spring, when normal document separation is performed (with back tension), both the main plate spring 16 and the auxiliary pressure spring 20 press the rotating shaft 12 to generate a conveying force. .
[0025]
If the pressure force of a single pressure leaf spring is changed, the variation in the pressure force will increase, but by setting the pressure leaf spring to a two-part configuration, the set pressure force (of the component itself) can be generated without variation. be able to.
[0026]
During manual insertion, the release lever 19 is pushed in as in the prior art described above, whereby the inclined portion 19a of the release lever 19 pushes up the pin 17 of the holder 4 and the separation pressure is released.
[0027]
In the embodiment of the present invention, the lever 19 is extended to the main pressure plate spring 16 of the opposed roller 11 of the reading conveyance roller 10, and the tip of the main pressure plate spring 16 is pushed up by the extension portion 19b in the same manner as the release of the separation pressure.
[0028]
The pressurizing force of the pressurizing roller 11 can be released by the main pressurizing plate spring 16, and the pressurization can be performed only by the added auxiliary pressurizing plate spring 20. Image misalignment can be reduced.
[0029]
【The invention's effect】
As described above , according to the present invention, when there is no separation load (back tension) as in the case of using the manual feed function, the conveyance force of the reading conveyance roller can be set to the minimum necessary without conveyance slip, “Image displacement” can be reduced by reducing the nip discharge force.
[0030]
Further, it is possible to eliminate the occurrence of pressure variation due to changing the pressure of one component of the pressure leaf spring (main leaf spring for separating and conveying the document).
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of a separation conveyance type document reading apparatus with a manual feed function according to the present invention as a facsimile document reading apparatus.
FIG. 2 is a schematic diagram illustrating an enlarged main part of the separation conveyance type document reading apparatus with manual feeding function of FIG. 1 in a state of manual feeding.
FIG. 3 is a schematic diagram for explaining a general separation conveyance type document reading apparatus with a manual feed function.
4 is an enlarged schematic view showing a main part of the general separation conveyance type document reading apparatus with a manual feed function shown in FIG. 3;
FIG. 5 is an explanatory diagram illustrating a state in which an image shift occurs.
FIG. 6 is a diagram illustrating a state of an original image in which diagonal lines are written.
FIG. 7 is a diagram showing a state including an example of occurrence of “image shift” when an image with oblique lines is read.
[Explanation of symbols]
A Image reading section B Document separating section 10 Conveying roller 16 Main pressure leaf spring (switching means)
19 Release lever 19b Release lever extension (integral part)
20 Auxiliary pressure leaf spring (switching means)

Claims (3)

原稿束から原稿を分離パッドで一枚づつ分離し、フィードローラで原稿読み取り部に搬送する機能と、手差し機能とを備えた手差し機能付分離搬送式原稿読み取り装置において、
手差しセット時に前記分離パッドのフィードローラに対する加圧力を解除する解除レバーと、
前記原稿読み取り部に原稿を搬送する搬送ローラと、
前記搬送ローラに圧接した加圧コロと、
前記加圧コロを前記搬送ローラに押圧する2つの加圧ばねを有し、
前記原稿束からの原稿搬送時に、上記2つの加圧ばねにより前記加圧コロを押圧し、
手差し搬送時に、上記2つのばねのうちの一方の加圧ばねの加圧コロに対する加圧力の解除を、前記分離パッドの解除と同時に、前記解除レバーにより行うことを特徴とする手差し機能付分離搬送式原稿読み取り装置。
In a separation conveyance type document reading apparatus with a manual feed function, which has a function of separating a document from a bundle of documents one by one with a separation pad and conveying the document to a document reading section with a feed roller, and a manual feed function.
A release lever for releasing pressure applied to the feed roller of the separation pad during manual feed setting;
A transport roller for transporting the document to the document reading unit;
A pressure roller in pressure contact with the conveying roller;
Having two pressure springs that press the pressure roller against the conveying roller ;
During the conveyance of the document from the document bundle, the pressure roller is pressed by the two pressure springs,
Separation transfer with manual feed function, wherein the release lever is used to release the pressure applied to the pressure roller of one of the two springs during manual feed, simultaneously with the release of the separation pad. Type document reader.
原稿束から原稿を分離パッドで一枚づつ分離し、フィードローラで原稿読み取り部に搬送する機能と、手差し機能とを備えた手差し機能付分離搬送式原稿読み取り装置において、
手差しセット時に前記分離パッドのフィードローラに対する加圧力を解除する解除レバーと、
前記原稿読み取り部に原稿を搬送する搬送ローラと、
前記搬送ローラに圧接した加圧コロと、
前記加圧コロを前記搬送ローラに押圧する主加圧ばねと補助加圧ばねとを有し、
前記原稿束からの原稿搬送時に、上記2つの加圧ばねにより前記加圧コロを押圧し、
手差し搬送時に、主加圧ばねの加圧コロに対する加圧力の解除を、前記分離パッドの解除と同時に、前記解除レバーにより行うことを特徴とする手差し機能付分離搬送式原稿読み取り装置。
In a separation conveyance type document reading apparatus with a manual feed function, which has a function of separating a document from a bundle of documents one by one with a separation pad and conveying the document to a document reading section with a feed roller, and a manual feed function.
A release lever for releasing pressure applied to the feed roller of the separation pad during manual feed setting;
A transport roller for transporting the document to the document reading unit;
A pressure roller in pressure contact with the conveying roller;
A main pressure spring and an auxiliary pressure spring for pressing the pressure roller against the transport roller ;
During the conveyance of the document from the document bundle, the pressure roller is pressed by the two pressure springs,
A separation-conveyance type document reading apparatus with a manual-feed function, wherein the pressure applied to the pressure roller of the main pressure spring is released by the release lever simultaneously with the release of the separation pad during manual feeding.
前記2つの加圧ばねは、板ばねであることを特徴とする請求項1または2記載の手差し機能付分離搬送式原稿読み取り装置。  The separation conveying type document reading apparatus with a manual feed function according to claim 1 or 2, wherein the two pressure springs are leaf springs.
JP2003044592A 2003-02-21 2003-02-21 Separation conveyance type document reading device with manual feed function Expired - Fee Related JP4139248B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003044592A JP4139248B2 (en) 2003-02-21 2003-02-21 Separation conveyance type document reading device with manual feed function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003044592A JP4139248B2 (en) 2003-02-21 2003-02-21 Separation conveyance type document reading device with manual feed function

Publications (2)

Publication Number Publication Date
JP2004254210A JP2004254210A (en) 2004-09-09
JP4139248B2 true JP4139248B2 (en) 2008-08-27

Family

ID=33027240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003044592A Expired - Fee Related JP4139248B2 (en) 2003-02-21 2003-02-21 Separation conveyance type document reading device with manual feed function

Country Status (1)

Country Link
JP (1) JP4139248B2 (en)

Also Published As

Publication number Publication date
JP2004254210A (en) 2004-09-09

Similar Documents

Publication Publication Date Title
JP5621512B2 (en) Automatic document feeder and image forming apparatus having the same
US8727340B2 (en) Media separating and feeding device and media processing device
US7971866B2 (en) Sheet-feeding scanning apparatus having mechanism for feeding business card
JP5162692B2 (en) Double-sided document conveying device and document conveying method of double-sided document conveying device
JP5526699B2 (en) Image forming apparatus
US8387979B2 (en) Sheet feeding apparatus, document reading apparatus and method for feeding sheet
US7302222B2 (en) Automatic document feeder (ADF) with a releasing device
JP4139248B2 (en) Separation conveyance type document reading device with manual feed function
JP2004277055A (en) Automatic document feeder
JP4869675B2 (en) Paper feeder
JP3964121B2 (en) Automatic paper feeding apparatus, original reading apparatus, and image forming apparatus
JP2002193472A (en) Sheet material carrying device
WO2023042312A1 (en) Media conveyance device
US7201371B2 (en) Automatic paper-feeding structure
JP2006168995A (en) Document conveying device
JP2000078348A (en) Image reader
JP3639693B2 (en) Sheet material feeding apparatus and image processing apparatus
JP3809245B2 (en) Paper feeder, automatic document feeder, and document information processing apparatus
KR20240011000A (en) shutter structure for sheet feeding apparatus
JPH10329954A (en) Bottom side taking out type paper feed device
JPH1159949A (en) Document carrying device
JP2007312160A (en) Image reader and image forming apparatus
JP2005178981A (en) Automatic document carrying device
JPH0472243A (en) Medium delivery mechanism
JP2006160379A (en) Image forming and reading apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20051017

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20051117

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070515

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070626

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070827

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080304

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080410

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080513

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080606

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110613

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110613

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120613

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130613

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees