JPH0377517B2 - - Google Patents
Info
- Publication number
- JPH0377517B2 JPH0377517B2 JP7948782A JP7948782A JPH0377517B2 JP H0377517 B2 JPH0377517 B2 JP H0377517B2 JP 7948782 A JP7948782 A JP 7948782A JP 7948782 A JP7948782 A JP 7948782A JP H0377517 B2 JPH0377517 B2 JP H0377517B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- replenisher
- fresh
- copying machine
- recovered
- 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
- 238000000034 method Methods 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect 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
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/10—Collecting or recycling waste developer
- G03G21/105—Arrangements for conveying toner waste
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】 本発明は、複写機のトナー回収方法に関する。[Detailed description of the invention] The present invention relates to a toner recovery method for a copying machine.
従来より省資源の要求に応えて、複写機の現像
装置内のトナー補給器に外部から供給されるトナ
ー（以下、フレツシユトナーという）を該複写機
内で全て使い切るため、感光体ドラムからクリー
ニング装置によつて捕集されたトナー（以下回収
トナーという）を補給器に戻すというトナー回収
方法が提案されている。 In response to the conventional demand for resource conservation, in order to use up all the toner (hereinafter referred to as fresh toner) that is supplied externally to the toner replenisher in the developing device of a copying machine, a cleaning device has been installed from the photoconductor drum. A toner recovery method has been proposed in which toner collected by a toner (hereinafter referred to as recovered toner) is returned to a replenisher.
しかし、このような従来のトナー回収方法では
回収トナーは、補給器内のフレツシユトナー上に
供給されていた。このため、回収トナーは、補給
器内でフレツシユトナー上に層別に堆積されるだ
けで、フレツシユトナーと十分に混合されなかつ
た。 However, in such conventional toner recovery methods, recovered toner is supplied onto fresh toner in a replenisher. For this reason, the collected toner is only deposited in layers on the fresh toner in the replenisher, and is not sufficiently mixed with the fresh toner.
このため、従来のトナー回収型複写機では、補
給器内に攪拌機を備え、これにより現像装置に供
給するトナーの均質化を図つていた。 For this reason, conventional toner recovery type copying machines are equipped with an agitator in the replenisher to homogenize the toner supplied to the developing device.
従つて、このような従来のトナー回収方法を採
用する複写機では、攪拌機を設置するためのスペ
ースを補給器周辺に確保しなければならず、複写
機が大型となる虞れがあつた。 Therefore, in a copying machine employing such a conventional toner recovery method, a space for installing an agitator must be secured around the replenisher, and there is a risk that the copying machine will become large.
この発明は、上記実情に鑑みてなされたもので
あり、攪拌機を用いることなく、補給器内でフレ
ツシユトナーと回収トナーとを混合することがで
きるトナー回収方法を提供することを目的とす
る。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a toner recovery method that allows fresh toner and recovered toner to be mixed in a replenisher without using a stirrer.
本発明では、回収トナーを補給器内のフレツシ
ユトナー中に直接圧送し、その圧送力で回収トナ
ーをフレツシユトナー内に拡散させるようにして
いる。 In the present invention, the collected toner is directly pumped into the fresh toner in the replenisher, and the pumping force is used to diffuse the collected toner into the fresh toner.
以下、この発明にかかる複写機のトナー回収方
法を添附図面に示す実施例にしたがつて詳細に説
明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The toner recovery method for a copying machine according to the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.
第１図は本発明のトナー回収方法を適用した複
写機１を示すものである。複写機１は、感光体ド
ラム２の周りに帯電ステーシヨン３、露光ステー
シヨン４、現像装置５、転写ステーシヨン６、除
電ステーシヨン７およびクリーニング装置８等を
有している。現像装置５内の補給器９とクリーニ
ング装置８間には、スクリユーコンベア１０が接
続され、このスクリユーコンベア１０の先端開口
部１１ａを補給器９内に該補給器９の側方より臨
ませるとともに、該開口部を補給器９内のフレツ
シユトナー１２中に位置するように配設してい
る。 FIG. 1 shows a copying machine 1 to which the toner recovery method of the present invention is applied. The copying machine 1 includes a charging station 3, an exposure station 4, a developing device 5, a transfer station 6, a static eliminating station 7, a cleaning device 8, etc. around a photosensitive drum 2. A screw conveyor 10 is connected between the replenisher 9 in the developing device 5 and the cleaning device 8, and the tip opening 11a of the screw conveyor 10 is made to face into the replenisher 9 from the side of the replenisher 9. At the same time, the opening is located within the fresh toner 12 within the replenisher 9.
このような複写機１では、クリーニング装置８
によつて感光体ドラム２から使用済みのトナーが
捕集される。このようにして捕集されたトナー
（回収トナー）１３は、スクリユーコンベア１０
により圧送されて補給器９内のフレツシユトナー
１２中に直接導入される。これによりこの回収ト
ナー１３は、スクリユーコンベア１０の圧送力に
よりフレツシユトナー１２中に拡散し、該フレツ
シユトナー１２と混合される。本実施例では、第
２図に示すように、スクリユーコンベア１０のス
クリユー１４をコンベアハウジング１１の先端開
口部１１ａがら突出させ、その突出させたスクリ
ユー１４を攪拌翼１５としている。したがつて、
回収トナー１３はフレツシユトナー１２中に直接
導入されるとともに、スクリユー１４と一体に回
転される攪拌翼１５によりフレツシユトナー１２
と攪拌される。このようにして攪拌されたトナー
はより均質なものになり、トナー落下機構１６に
よつて落下容量が制御されて現像装置５の本体内
部に供給される。 In such a copying machine 1, the cleaning device 8
The used toner is collected from the photoreceptor drum 2 by. The toner (recovered toner) 13 collected in this way is transferred to the screw conveyor 10.
The fresh toner is directly introduced into the fresh toner 12 in the replenisher 9. As a result, the collected toner 13 is diffused into the fresh toner 12 by the force of the screw conveyor 10 and mixed with the fresh toner 12. In this embodiment, as shown in FIG. 2, the screw 14 of the screw conveyor 10 is made to protrude from the tip opening 11a of the conveyor housing 11, and the protruded screw 14 is used as the stirring blade 15. Therefore,
The collected toner 13 is directly introduced into the fresh toner 12, and the fresh toner 12 is stirred by the stirring blade 15 which is rotated together with the screw 14.
and stirred. The toner stirred in this manner becomes more homogeneous, and is supplied into the main body of the developing device 5 with a falling volume controlled by the toner dropping mechanism 16.
なお、上記実施例では、スクリユー１４先端を
コンベアハウジング１１から突出させて、トナー
を積極的に攪拌するようにしているが、この攪拌
手段は必ずしも必要としない。 In the above embodiment, the tip of the screw 14 is made to protrude from the conveyor housing 11 to actively stir the toner, but this stirring means is not necessarily required.
第３図は、複写機に使用されるトナーの微粉含
有率Ｂとその圧縮率Ｐおよび流動性Ｆとの関係を
示したものである。このグラフによると、トナー
は微粉含有率Ｂが小さくなると圧縮率Ｐが大きく
なるとともに流動性Ｆも増すことが判る。実験結
果によると複写機に用いるのに最適なトナーの重
量平均粒径Ｄおよび微粉含有率Ｂは、第４図に斜
線で示すように微粉（粒径が5μｍ以下のもの）
含有率Ｂが５〜35％、重量平均粒径Ｄが10μｍ以
上の範囲にあるものが望ましい。 FIG. 3 shows the relationship between the fine powder content B of toner used in a copying machine, its compressibility P, and its fluidity F. According to this graph, it can be seen that as the fine powder content B of the toner decreases, the compressibility P increases and the fluidity F also increases. According to the experimental results, the optimal weight average particle diameter D and fine powder content B of toner for use in copying machines are as shown by the diagonal lines in Figure 4.
It is desirable that the content B is in the range of 5 to 35% and the weight average particle diameter D is in the range of 10 μm or more.
上記条件は回収トナーにも適用でき、このよう
な条件を備えた回収トナーはスムースに搬送され
ることが判つた。 It has been found that the above conditions can also be applied to recovered toner, and recovered toner that meets these conditions is transported smoothly.
また、一成分現像剤として用いる磁性を含んだ
磁性トナーにおいても上記微粉含有率が80％以下
であれば、当該磁性トナーの重量平均粒径が10μ
ｍ以上の範囲で使用できる。 In addition, even in a magnetic toner containing magnetism used as a one-component developer, if the fine powder content is 80% or less, the weight average particle diameter of the magnetic toner is 10 μm.
Can be used in the range of m or more.
なお、本発明の方法を実施するための回収トナ
ーの圧送手段としては、スクリユーコンベアの他
に、空気により圧送するタイプのコンベアを用い
ることもできる。 In addition to the screw conveyor, an air-powered conveyor may be used as the means for force-feeding the recovered toner for carrying out the method of the present invention.
以上説明したように、本発明にかかる複写機の
トナー回収方法は、回収トナーを補給器内のフレ
ツシユトナー中に直接圧送し、その圧送力により
該フレツシユトナー内へ拡散させるので、特別な
攪拌手段を必要とせず、したがつて、複写機の小
型化が図れる。 As explained above, in the toner recovery method for a copying machine according to the present invention, the recovered toner is directly forced into the fresh toner in the replenisher and is diffused into the fresh toner by the force of the feeding. No stirring means is required, and therefore the copying machine can be made smaller.
第１図は本発明が適用された複写機の一実施例
を示す概念図、第２図は第１図に示した実施例の
要部縦断面図、第３図は微粉含有率Ｂと圧縮率Ｐ
および流動性Ｆとの関係を示すグラフ、第４図は
トナーの使用可能範囲を示すグラフである。
５……現像装置、８……クリーニング装置、９
……補給器、１０……スクリユーコンベア、１１
……コンベアハウジング、１１ａ……開口部、１
２……フレツシユトナー、１３……回収トナー、
１４……スクリユー、１５……攪拌翼、１６……
トナー落下機構。
Fig. 1 is a conceptual diagram showing an embodiment of a copying machine to which the present invention is applied, Fig. 2 is a vertical cross-sectional view of the main part of the embodiment shown in Fig. 1, and Fig. 3 shows fine powder content B and compression. Rate P
FIG. 4 is a graph showing the usable range of the toner. 5...Developing device, 8...Cleaning device, 9
...Replenisher, 10...Screw conveyor, 11
... Conveyor housing, 11a ... Opening, 1
2... Fresh toner, 13... Recovered toner,
14... Screw, 15... Stirring blade, 16...
Toner falling mechanism.
Claims (1)
内のフレツシユトナー中に直接圧送することを特
徴とする複写機のトナー回収方法。1. A toner recovery method for a copying machine, which is characterized in that the toner recovered by a cleaning device is directly forced into a fresh toner in a replenisher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7948782A JPS58196571A (en) | 1982-05-12 | 1982-05-12 | Method for recovering toner of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7948782A JPS58196571A (en) | 1982-05-12 | 1982-05-12 | Method for recovering toner of copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58196571A JPS58196571A (en) | 1983-11-16 |
| JPH0377517B2 true JPH0377517B2 (en) | 1991-12-10 |
Family
ID=13691251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7948782A Granted JPS58196571A (en) | 1982-05-12 | 1982-05-12 | Method for recovering toner of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58196571A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05917Y2 (en) * | 1985-03-23 | 1993-01-12 | ||
| JPH0721688B2 (en) * | 1986-03-11 | 1995-03-08 | コニカ株式会社 | Toner collection device |
| JPH01136182A (en) * | 1987-11-24 | 1989-05-29 | Mita Ind Co Ltd | Cleaning device |
| JPH07230241A (en) * | 1993-12-22 | 1995-08-29 | Canon Inc | Image forming device |
-
1982
- 1982-05-12 JP JP7948782A patent/JPS58196571A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58196571A (en) | 1983-11-16 |
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