JPH0725719Y2 - Toner charge amount measuring device - Google Patents

Toner charge amount measuring device

Info

Publication number
JPH0725719Y2
JPH0725719Y2 JP2846990U JP2846990U JPH0725719Y2 JP H0725719 Y2 JPH0725719 Y2 JP H0725719Y2 JP 2846990 U JP2846990 U JP 2846990U JP 2846990 U JP2846990 U JP 2846990U JP H0725719 Y2 JPH0725719 Y2 JP H0725719Y2
Authority
JP
Japan
Prior art keywords
toner
carrier
charge amount
nozzle
support
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
Application number
JP2846990U
Other languages
Japanese (ja)
Other versions
JPH03119771U (en
Inventor
憲美 彼谷
広行 辻本
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.)
Hosokawa Micron Corp
Original Assignee
Hosokawa Micron 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 Hosokawa Micron Corp filed Critical Hosokawa Micron Corp
Priority to JP2846990U priority Critical patent/JPH0725719Y2/en
Publication of JPH03119771U publication Critical patent/JPH03119771U/ja
Application granted granted Critical
Publication of JPH0725719Y2 publication Critical patent/JPH0725719Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、長時間にわたる連続測定を実行できるよう
に、トナー付きキャリアを磁力により吸着する支持体を
回転自在に設け、前記支持体にトナー付きキャリアを連
続供給するフィーダを設け、前記支持体に吸着されたキ
ャリアにトナー吹飛ばし用ガスを噴出するノズルを設
け、そのノズルからのガスで吹飛ばされたトナーを導入
してトナー帯電量分布測定部に供給するトナー導入手段
を設け、前記ノズルによるトナー吹飛ばし部から前記フ
ィーダによるトナー付キャリア供給部に前記支持体の回
転で送られるキャリアを掻取るスクレーパを設けたトナ
ー帯電量測定装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a support for rotatably adsorbing a carrier with toner by magnetic force so that continuous measurement can be performed for a long time. A feeder for continuously supplying a carrier with a carrier is provided, a nozzle for ejecting a toner blowing gas is provided on the carrier adsorbed on the support, and the toner blown by the gas from the nozzle is introduced to distribute the toner charge amount distribution. The present invention relates to a toner charge amount measuring device provided with a toner introducing means for supplying to a measuring part, and a scraper for scraping a carrier sent by the rotation of the support from a toner blowing part by the nozzle to a toner-equipped carrier supplying part by the feeder. .

〔従来の技術〕[Conventional technology]

従来、上記トナー帯電量測定装置においては、ノズルに
より吹飛ばされたもの全てを帯電量分布測定部に供給す
るように構成していた(特開昭64−9482号公報参照)。
Conventionally, in the above-mentioned toner charge amount measuring device, all the toner blown off by the nozzle is configured to be supplied to the charge amount distribution measuring unit (see Japanese Patent Laid-Open No. 64-9482).

〔考案が解決しようとする課題〕[Problems to be solved by the device]

しかし、帯電量分布測定部からの情報により得られる帯
電量分布が、第5図に示すようにピークが2箇所にでき
る双峰性分布になり、測定精度が低下する危険性があ
り、一層の改良の余地があった。
However, the charge amount distribution obtained from the information from the charge amount distribution measuring section becomes a bimodal distribution with two peaks as shown in FIG. 5, and there is a risk that the measurement accuracy will be reduced. There was room for improvement.

本考案の目的は、上記双峰性分布になる原因を除去し
て、精度の高い測定を確実に実行できるようにする点に
ある。
An object of the present invention is to eliminate the cause of the above-mentioned bimodal distribution and to ensure accurate measurement.

〔課題を解決するための手段〕[Means for Solving the Problems]

本考案の特徴構成は、上記〔産業上の利用分野〕の項で
明示した構成のトナー帯電量測定装置において、トナー
吹飛ばし部からトナー帯電量分布測定部へのトナー供給
経路に、ノズルにより支持体から吹飛ばされたキャリア
を受止めるための多孔体を設けたことにあり、その作用
効果は次の通りである。
The characteristic configuration of the present invention is that in the toner charge amount measuring device having the configuration specified in the section of [Industrial application], the nozzle is supported in the toner supply path from the toner blow-off unit to the toner charge amount distribution measuring unit. The porous body for receiving the carrier blown off from the body is provided, and the function and effect are as follows.

〔作用〕[Action]

上述のように帯電量分布が双峰性分布になる原因を追究
したところ、トナー付キャリアを磁力で吸着する支持体
からキャリアの一部が、ノズルからの噴出ガスで吹飛ば
されてトナーと共に帯電量分布測定部に送られ、帯電量
分布測定部の電界がキャリアにより乱される事実が判明
した。
As a result of investigating the cause of the bimodal distribution of the charge amount as described above, part of the carrier from the support that attracts the carrier with toner by magnetic force is blown off by the gas ejected from the nozzle and charged with the toner. It was found that the electric field sent to the charge amount distribution measuring unit was disturbed by the carrier and the electric field in the charge amount distribution measuring unit was disturbed.

そこで、支持体から吹飛ばされたキャリアを多孔体で受
止めて帯電量分布測定部に送られないように構成するこ
とによって、第4図に示すようにピークが1箇所にでき
る整った単峰性分布を確実に得られるようになり、精度
の高い測定を実行できるようになった。
Therefore, by arranging so that the carrier blown off from the support is received by the porous body and is not sent to the charge amount distribution measurement unit, a single peak with one peak as shown in FIG. Now that the sex distribution can be obtained reliably, it has become possible to perform highly accurate measurements.

その上、多孔体によりトナーの流動に対する整流作用を
発揮させ、ノズルによるトナー吹飛ばしに起因するトナ
ーの慣性でトナー供給経路の周壁にトナーが付着するこ
とを抑制でき、測定精度を一段と向上できる。
In addition, the porous body exerts a rectifying action on the flow of the toner, and it is possible to prevent the toner from adhering to the peripheral wall of the toner supply path due to the inertia of the toner caused by the toner blown off by the nozzle, thereby further improving the measurement accuracy.

〔考案の効果〕[Effect of device]

その結果、長時間にわたる連続測定により測定精度の向
上が可能であるばかりで無く、トナー帯電量分布測定部
へのキャリア流入による測定精度低下を防止でき、全体
として確実に極めて精度良く測定できる、一段と高性能
なトナー帯電量測定装置を提供できるようになった。
As a result, not only the measurement accuracy can be improved by continuous measurement for a long time, but also the measurement accuracy can be prevented from lowering due to the carrier inflow into the toner charge amount distribution measurement unit, and the measurement can be surely performed with extremely high accuracy. It has become possible to provide a high-performance toner charge amount measuring device.

〔実施例〕〔Example〕

次に、第1図ないし第3図により実施例を示す。 Next, an embodiment will be described with reference to FIGS.

リング状の磁性体(1a)と、その内部に固定配置した扇
形状の電磁石(1b)によって、トナー付きキャリア
(2)を磁力により吸着する支持体(1)を形成し、磁
性体(1a)を軸受部(3)に回転自在に取付け、磁性体
(1a)を一定速度で回転させるモータ(M)と減速機
(4)を設け、電磁石(1b)に磁力を発生させる電磁コ
イル(5)を設けてある。尚、磁性体(1a)の両側にリ
ング状の非磁性体(16a),(16b)を一体回転するよう
に取付けてある。キャリア(2)は鉄粉などの磁性材か
ら成っている。
The ring-shaped magnetic body (1a) and the fan-shaped electromagnet (1b) fixedly arranged therein form a support body (1) that attracts the carrier with toner (2) by magnetic force, and the magnetic body (1a) Is rotatably attached to the bearing (3), a motor (M) for rotating the magnetic body (1a) at a constant speed and a speed reducer (4) are provided, and an electromagnetic coil (5) for generating a magnetic force in the electromagnet (1b). Is provided. In addition, ring-shaped non-magnetic bodies (16a) and (16b) are attached to both sides of the magnetic body (1a) so as to rotate integrally. The carrier (2) is made of a magnetic material such as iron powder.

磁性体(1a)の外周面にローレット加工したキャリア吸
着面(S)を全周にわたって形成し、ホッパー部(6a)
と自重流下式ガイド管部(6b)から成るフィーダ(6)
を設け、フィーダ(6)からキャリア吸着面(S)にト
ナー付きキャリア(2)を磁性体(1a)の回転に伴って
定量的に連続供給するように構成してある。
A knurled carrier adsorption surface (S) is formed on the outer peripheral surface of the magnetic body (1a) over the entire circumference, and the hopper portion (6a)
(6) consisting of a self-weight flow-down guide tube (6b)
Is provided and the carrier with toner (2) is quantitatively and continuously supplied from the feeder (6) to the carrier adsorption surface (S) as the magnetic body (1a) rotates.

磁性体(1a)の回転に伴ってキャリア吸着面(S)に吸
着されて定量的に連続供給されるトナー付きキャリア
(2)に、ブロワ(B1)からの空気、N2などのガスを吹
付けてトナー(7)を吹飛ばすノズル(8)を設け、ノ
ズル(8)によるトナー吹飛ばし部(X)に臨ませて、
ブロワ(B2)による吸引管(9a)に受器(9b)を接続し
て成るトナー導入手段(9)を設け、トナー帯電量分布
測定部(10)を吸引管(9a)に接続してある。
Air from the blower (B 1 ) and gas such as N 2 are supplied to the carrier (2) with toner that is adsorbed on the carrier adsorption surface (S) and continuously supplied quantitatively as the magnetic body (1a) rotates. A nozzle (8) for spraying and ejecting the toner (7) is provided, and the nozzle (8) faces the toner blowout portion (X),
A toner introducing means (9) is provided by connecting a receiver (9b) to a suction pipe (9a) by a blower (B 2 ), and a toner charge amount distribution measuring unit (10) is connected to the suction pipe (9a). is there.

つまり、ノズル(8)からのガスでトナー(7)を吹飛
ばして、吹飛ばされたトナー(7)を気流搬送によりト
ナー導入手段(9)からトナー帯電量分布測定部(10)
に定量的に連続供給し、良好な複写を得る上で重要な要
素となるトナー粒子の帯電量分布を精度良く測定できる
ように構成してある。
That is, the toner (7) is blown off by the gas from the nozzle (8), and the blown-off toner (7) is conveyed by the air flow from the toner introducing means (9) to the toner charge amount distribution measuring unit (10).
It is configured such that the charge amount distribution of the toner particles, which is an important factor in obtaining a good copy, can be measured with high accuracy and continuously.

吸引管(9a)の入口に、400メッシュ程度のキャリア受
止用の多孔体(13)と、10メッシュ程度の補強用の多孔
体(14)を設け、ノズル(8)により支持体(1)から
吹飛ばされたキャリア(2)を多孔体(13)で受止めて
トナー帯電量分布測定部(10)に送らないように、か
つ、キャリア受止用の多孔体(13)の耐久性を補強多孔
体(14)で向上できるように構成し、第4図に示すよう
な整った単峰性の帯電量分布が長期にわたり確実に得ら
れて、精度良好な測定を実行できるようにしてある。
At the inlet of the suction pipe (9a), a porous body (13) for receiving a carrier of about 400 mesh and a porous body (14) for reinforcement of about 10 mesh are provided, and a support (1) is provided by a nozzle (8). The carrier (2) blown off from the porous body (13) is prevented from being received by the porous body (13) and sent to the toner charge amount distribution measuring unit (10), and the durability of the carrier receiving porous body (13) is improved. The reinforced porous body (14) is configured so that it can be improved, and a uniform unimodal charge amount distribution as shown in FIG. 4 can be reliably obtained for a long period of time, and accurate measurement can be performed. .

磁性体(1a)の回転に伴って、トナー吹飛ばし部(X)
から搬送されてくるキャリア(2)を掻取るスクレーパ
(11)、及び、スクレーパ(11)から落下するキャリア
(2)を回収する容器(12)を設け、フィーダ(6)に
よるキャリア付きトナー供給部(Y)に向かうキャリア
吸着面(S)にはキャリア(2)が残らないように構成
してある。
As the magnetic body (1a) rotates, the toner blowing section (X)
A scraper (11) for scraping the carrier (2) conveyed from the container and a container (12) for collecting the carrier (2) falling from the scraper (11) are provided, and a toner supply unit with a carrier by a feeder (6) The carrier (2) does not remain on the carrier adsorption surface (S) toward (Y).

扇形状の電磁石(1b)を磁性体(1a)に対して、キャリ
ア付きトナー供給部(Y)からトナー吹飛ばし部(X)
にわたって接近すると共に、スクレーパ(11)によるキ
ャリア掻取部(2)で離間するように配置し、磁性体
(1a)へのトナー付きキャリア供給、トナー吹飛ばし部
(X)へのトナー付きキャリア搬送、及び、トナー吹飛
ばし部(X)でのキャリア吸着保持を強力な磁力で確実
に行えると共に、スクレーパ(11)によりキャリア掻取
りを磁力低下で確実に行えるように構成してある。
The fan-shaped electromagnet (1b) is blown from the toner supply unit (Y) with carrier to the magnetic body (1a) by the toner blowing unit (X).
The scraper (11) and the carrier scraping section (2) so that they are separated from each other, the carrier with toner is supplied to the magnetic body (1a), and the carrier with toner is conveyed to the toner blowing section (X). In addition, the carrier blow-off portion (X) can be surely attracted and held by a strong magnetic force, and the scraper (11) can surely scrape the carrier by reducing the magnetic force.

〔別実施例〕[Another embodiment]

次に、別実施例を説明する。 Next, another embodiment will be described.

キャリア受止用の多孔体(13)は構造、配置、その他に
おいて適当に変更可能であり、例えば金網や孔付き板状
体を利用したり、トナー吹飛ばし部(X)からトナー帯
電量分布測定部(10)の間において適当に位置を変更し
たりできる。
The structure of the porous body (13) for receiving the carrier (13) can be appropriately changed in its structure, arrangement, etc. For example, a wire net or a plate-shaped body with holes can be used, or the toner charge amount distribution can be measured from the toner blowing section (X). The position can be changed appropriately between the parts (10).

トナー帯電量測定装置の構成要素は、特開昭64−9482号
公報において開示又は示唆されているように適当に変更
できる。
The constituent elements of the toner charge amount measuring device can be appropriately changed as disclosed or suggested in JP-A-64-9482.

尚、実用新案登録請求の範囲の項に図面との対照を便利
にする為に符号を記すが、該記入により本考案は添付図
面の構造に限定されるものではない。
It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

第1図ないし第3図は本考案の実施例を示し、第1図は
斜視図、第2図は水平断面図、第3図は要部断面図であ
る。第4図は本考案の測定結果を示すグラフであり、第
5図は従来の測定結果を示すグラフである。 (1)……支持体、(2)……キャリア、(6)……フ
ィーダ、(7)……トナー、(8)……ノズル、(9)
……トナー導入手段、(10)……トナー帯電量分布測定
部、(11)……スクレーパ、(X)……トナー吹飛ばし
部、(Y)……トナー付きキャリア供給部。
1 to 3 show an embodiment of the present invention, FIG. 1 is a perspective view, FIG. 2 is a horizontal sectional view, and FIG. 3 is a sectional view of essential parts. FIG. 4 is a graph showing the measurement result of the present invention, and FIG. 5 is a graph showing the conventional measurement result. (1) ... Support, (2) ... Carrier, (6) ... Feeder, (7) ... Toner, (8) ... Nozzle, (9)
...... Toner introduction means, (10) ・ ・ ・ Toner charge amount distribution measurement unit, (11) ・ ・ ・ Scraper, (X) ・ ・ ・ Toner blowing unit, (Y) ・ ・ ・ Toner carrier supply unit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】トナー付きキャリア(2)を磁力により吸
着する支持体(1)を回転自在に設け、前記支持体
(1)にトナー付きキャリア(2)を連続供給するフィ
ーダ(6)を設け、前記支持体(1)に吸着されたキャ
リア(2)にトナー吹飛ばし用ガスを噴出するノズル
(8)を設け、そのノズル(8)からのガスで吹飛ばさ
れたトナー(7)を導入してトナー帯電量分布測定部
(10)に供給するトナー導入手段(9)を設け、前記ノ
ズル(8)によるトナー吹飛ばし部(X)から前記フィ
ーダ(6)によるトナー付キャリア供給部(Y)に前記
支持体(1)の回転で送られるキャリア(2)を掻取る
スクレーパ(11)を設けたトナー帯電量測定装置であっ
て、 前記トナー吹飛ばし部(X)から前記トナー帯電量分布
測定部(10)へのトナー供給経路に、前記ノズル(8)
により前記支持体(1)から吹飛ばされたキャリア
(2)を受止めるための多孔体(13)を設けてあるトナ
ー帯電量測定装置。
1. A support (1) for attracting a carrier (2) with toner by magnetic force is rotatably provided, and a feeder (6) for continuously supplying the carrier (2) with toner is provided on the support (1). A nozzle (8) for ejecting a toner blowing gas is provided on the carrier (2) adsorbed on the support (1), and the toner (7) blown by the gas from the nozzle (8) is introduced. A toner introducing means (9) for supplying the toner to the toner charge amount distribution measuring section (10) is provided, and a toner-equipped carrier supplying section (Y) by the feeder (6) from the toner blowing section (X) by the nozzle (8). ) Is provided with a scraper (11) for scraping the carrier (2) fed by the rotation of the support (1), the toner charge amount distribution from the toner blow-off part (X). Toner for measuring unit (10) In the supply path, the nozzle (8)
A toner charge amount measuring device provided with a porous body (13) for receiving the carrier (2) blown off from the support (1).
JP2846990U 1990-03-20 1990-03-20 Toner charge amount measuring device Expired - Lifetime JPH0725719Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2846990U JPH0725719Y2 (en) 1990-03-20 1990-03-20 Toner charge amount measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2846990U JPH0725719Y2 (en) 1990-03-20 1990-03-20 Toner charge amount measuring device

Publications (2)

Publication Number Publication Date
JPH03119771U JPH03119771U (en) 1991-12-10
JPH0725719Y2 true JPH0725719Y2 (en) 1995-06-07

Family

ID=31531269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2846990U Expired - Lifetime JPH0725719Y2 (en) 1990-03-20 1990-03-20 Toner charge amount measuring device

Country Status (1)

Country Link
JP (1) JPH0725719Y2 (en)

Also Published As

Publication number Publication date
JPH03119771U (en) 1991-12-10

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