JPH08300624A - Powder feeding device - Google Patents
Powder feeding deviceInfo
- Publication number
- JPH08300624A JPH08300624A JP10863495A JP10863495A JPH08300624A JP H08300624 A JPH08300624 A JP H08300624A JP 10863495 A JP10863495 A JP 10863495A JP 10863495 A JP10863495 A JP 10863495A JP H08300624 A JPH08300624 A JP H08300624A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- printing paper
- electrode plate
- printing
- unit
- 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.)
- Withdrawn
Links
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、枚葉印刷機の排紙部に
おいて、印刷紙上の未乾燥インキに粉体を供給、付着さ
せて、未乾燥インキによる印刷紙同士の粘着（裏移り）
を防止する粉体供給装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supplies powder to undried ink on a printing paper in a paper discharge section of a sheet-fed printing press to cause the powder to adhere to the undried ink so that the printing paper adheres to the undried ink (set-off).
The present invention relates to a powder supply device for preventing the above.
【０００２】[0002]
【従来の技術】従来、枚葉印刷機の排紙部では、印刷紙
上の未乾燥インキに澱粉等の粉体を供給、付着させて、
未乾燥インキによる印刷紙同士の粘着（裏移り）を防止
するようにしている。その従来例を図３により説明する
と、１が圧力空気供給管、２が粉体入れ、３が粉体用噴
射ノズル、４が粉体、５が印刷紙、６が未乾燥インキ
で、圧力空気を圧力空気供給管１から粉体入れ２を経由
して粉体用ノズル３へ送ることにより、粉体４を含有す
る圧力空気を印刷紙５のインキ面に吹き付けて、印刷紙
５上の未乾燥インキ６に澱粉等の粉体４を供給、付着さ
せるようにしている。2. Description of the Related Art Conventionally, in a paper discharge section of a sheet-fed printing press, powder such as starch is supplied to and adhered to the undried ink on the printing paper,
It is designed to prevent sticking (offset) between printing papers due to undried ink. A conventional example will be described with reference to FIG. 3, 1 is a pressure air supply pipe, 2 is a powder container, 3 is a powder spray nozzle, 4 is powder, 5 is printing paper, 6 is undried ink, and pressure air is used. Is sent from the pressure air supply pipe 1 to the powder nozzle 3 via the powder container 2 so that the pressure air containing the powder 4 is blown onto the ink surface of the printing paper 5 and the non-printing on the printing paper 5 is continued. The powder 4 such as starch is supplied to and adhered to the dry ink 6.
【０００３】図４（ａ）（ｂ）は、粉体４の印刷紙５上
の未乾燥インキ６への付着効率を向上させるために提案
された粉体供給装置の他の従来例を示している。１０が
ノズル外管、１１が同ノズル外管１０の入口側に設けた
ブロア、１２が粉体タンク、１３が同粉体タンク１２の
下部に設けたロータリバルブ、１４がニードル弁、１５
が上記ロータリバルブ１３を介して上記粉体タンクに接
続した絶縁管、１６が後記ノズル内管１７に接続した直
流電源装置、１７が同絶縁管１５に接続したノズル内
管、１８が同ノズル内管１７の外周面に設けた放電用突
出部、１９が上記ノズル内管１７の吐出口、２０が印刷
紙５の裏面に接触するローラ状の対向電極で、粉体タン
ク１２からロータリバルブ１３と絶縁管１５とノズル内
管１７と吐出口１９とを経て印刷紙５に向かい供給され
る粉体４にイオンシャワーを浴びせ、粉体４を帯電させ
て、印刷紙５の静電気力により、粉体４を印刷紙５上の
未乾燥インキに付着させるようにしている。FIGS. 4 (a) and 4 (b) show another conventional example of a powder supply device proposed to improve the adhesion efficiency of the powder 4 to the undried ink 6 on the printing paper 5. There is. 10 is a nozzle outer tube, 11 is a blower provided on the inlet side of the nozzle outer tube 10, 12 is a powder tank, 13 is a rotary valve provided below the powder tank 12, 14 is a needle valve, 15
Is an insulating pipe connected to the powder tank via the rotary valve 13, 16 is a DC power supply device connected to a nozzle inner pipe 17 described later, 17 is a nozzle inner pipe connected to the insulating pipe 15, and 18 is a nozzle inner pipe. A discharge protrusion provided on the outer peripheral surface of the tube 17, 19 is a discharge port of the nozzle inner tube 17, and 20 is a roller-shaped counter electrode that contacts the back surface of the printing paper 5. The powder tank 12 is connected to the rotary valve 13. The powder 4 supplied to the printing paper 5 through the insulating tube 15, the nozzle inner tube 17 and the discharge port 19 is subjected to an ion shower to charge the powder 4, and the powder 4 is charged by the electrostatic force of the printing paper 5. 4 is attached to the undried ink on the printing paper 5.
【０００４】図５は、印刷紙５に供給した粉体４の飛散
を防止するために提案された粉体供給装置のさらに他の
従来例を示している。２２が印刷胴、２３が排紙胴、２
４が紙押えローラ、２５が上記排紙胴２３の外周面に捲
着したプラスチックフィルム、２６が粉体導入管、２７
が粉体噴霧機構、２８がローラで、ローラ２８による摩
擦帯電により、排紙胴２３の外周面に捲着したプラスチ
ックフィルム２５を帯電させて、粉体噴霧機構２７から
噴霧する粉体４をプラスチックフィルム２５に付着さ
せ、このプラスチックフィルム２５を搬送中の印刷紙５
に接触させて、粉体４を印刷紙５上の未乾燥インキに付
着させるようにしている。FIG. 5 shows still another conventional example of the powder supply device proposed for preventing the powder 4 supplied to the printing paper 5 from scattering. 22 is a printing cylinder, 23 is a discharge cylinder, 2
4 is a paper pressing roller, 25 is a plastic film wrapped around the outer peripheral surface of the paper discharge cylinder 23, 26 is a powder introduction tube, 27
Is a powder spraying mechanism, and 28 is a roller. By frictional charging by the roller 28, the plastic film 25 wound around the outer peripheral surface of the discharge cylinder 23 is charged, and the powder 4 sprayed from the powder spraying mechanism 27 is plasticized. The printing paper 5 is attached to the film 25 and the plastic film 25 is being conveyed.
The powder 4 is caused to adhere to the undried ink on the printing paper 5 by contacting with.
【０００５】[0005]
【発明が解決しようとする課題】前記図３、図５に示す
従来の粉体供給装置では、印刷紙５上の未乾燥インキへ
の粉体の付着効率が悪い。前記図４に示す従来の粉体供
給装置では、印刷紙５に向かい供給される粉体４にイオ
ンシャワーを浴びせ、粉体４を帯電させて、印刷紙５の
静電気力により、粉体４を印刷紙５上の未乾燥インキに
付着させるようにしているので、印刷紙５上の未乾燥イ
ンキへの粉体の付着効率を向上できるが、次の問題があ
る。即ち、 （ａ）イオンシャワーにより粉体４を帯電させるので、
帯電量のバラツキが非常に大きく、電界による粉体付着
量の制御性が非常に悪くて、粉体付着量が過少なときに
は、裏移りが発生するし、それとは逆に粉体付着量が過
大なときには、印刷面の光沢が低下する。 （ｂ）対向電極２０がローラ状なので、静電気の働く範
囲が非常に狭く、必然的に粉体４の周囲への飛散量が多
くて、周囲の環境を悪化させるという問題があった。In the conventional powder supplying apparatus shown in FIGS. 3 and 5, the efficiency of powder adhesion to the undried ink on the printing paper 5 is poor. In the conventional powder supply device shown in FIG. 4, the powder 4 supplied toward the printing paper 5 is subjected to an ion shower to charge the powder 4, and the powder 4 is charged by the electrostatic force of the printing paper 5. Since it adheres to the undried ink on the printing paper 5, the adhesion efficiency of the powder to the undried ink on the printing paper 5 can be improved, but there are the following problems. That is, (a) since the powder 4 is charged by the ion shower,
The variation in the amount of charge is very large, the controllability of the powder adhesion amount by the electric field is very poor, and when the powder adhesion amount is too small, set-off occurs, and conversely, the powder adhesion amount is too large. In that case, the gloss of the printed surface is reduced. (B) Since the counter electrode 20 is in the form of a roller, there is a problem in that the range where static electricity works is very narrow, and the amount of the powder 4 scattered around is inevitably large, deteriorating the surrounding environment.
【０００６】本発明は前記の問題点に鑑み提案するもの
であり、その目的とする処は、裏移り及び印刷面の光
沢低下を防止でき、周囲の環境悪化を防止できる粉体
供給装置を提供しようとする点にある。The present invention has been proposed in view of the above problems, and an object thereof is to provide a powder supply device capable of preventing set-off and deterioration of gloss of a printing surface and preventing deterioration of surrounding environment. There is a point to try.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の粉体供給装置は、粉体を含有する気体を
印刷紙の表面に供給する粉体供給部と、上記粉体を含有
する気体を吸引回収する粉体回収部と、上記印刷紙の裏
面の近くに配設した電極板と、同電極板に電圧を印加す
る電源とを具えている（請求項１）。In order to achieve the above object, a powder supply apparatus of the present invention comprises a powder supply unit for supplying a gas containing powder to the surface of a printing paper, and the above powder. The apparatus is provided with a powder recovery section for sucking and recovering a gas containing Pt, an electrode plate arranged near the back surface of the printing paper, and a power source for applying a voltage to the electrode plate (Claim 1).
【０００８】前記請求項１記載の粉体供給装置におい
て、電極板を粉体供給部の供給口に対向して配設しても
よい（請求項２）。前記請求項１記載の粉体供給装置に
おいて、印刷紙のインキがない表面に付着している粉体
を噴射した気体流により飛散させる気体噴射部を前記粉
体回収部の近くに配設してもよい（請求項３）。In the powder supply apparatus according to the first aspect, the electrode plate may be arranged so as to face the supply port of the powder supply section (the second aspect). The powder supply device according to claim 1, wherein a gas injection unit for scattering the powder adhering to the ink-free surface of the printing paper by a gas flow ejected is disposed near the powder recovery unit. (Claim 3)
【０００９】[0009]
【作用】本発明の粉体供給装置は前記のように構成され
ており、印刷紙を搬送しているときに、粉体供給部から
粉体を含有する圧力空気を印刷紙の表面に吹き付ける一
方、平板状の電極板による印刷紙の静電気力により粉体
を印刷紙の画線部の未乾燥インキに付着させる。このと
き、平板状の電極板を粉体供給部に対向して配設してお
り、静電気力の働く範囲が広くて、粉体の外部への飛散
量が少なくなる。印刷紙は引き続き搬送されており、粉
体回収部及び気体噴出部の前方を通過する。ここには、
電極板がないので、印刷紙から静電気力が消失し、必要
に応じて気体噴出部から噴射される気体流により、印刷
紙のインキのない表面（非画線部）に付着している粉体
を除去する一方、除去した粉体を粉体回収部により吸
引、回収する。その後の印刷紙には、画線部の未乾燥イ
ンキにより強く束縛された粉体のみが付着している。The powder feeding apparatus of the present invention is configured as described above, and while the printing paper is being conveyed, the compressed air containing the powder is blown from the powder feeding section to the surface of the printing paper. The powder is adhered to the undried ink in the image area of the printing paper by the electrostatic force of the printing paper by the flat electrode plate. At this time, the flat electrode plate is disposed so as to face the powder supply portion, and the range in which the electrostatic force works is wide, and the amount of powder scattered to the outside is reduced. The printing paper is still conveyed and passes in front of the powder recovery unit and the gas ejection unit. here,
Since there is no electrode plate, the electrostatic force disappears from the printing paper, and the powder that adheres to the ink-free surface (non-image area) of the printing paper due to the gas flow ejected from the gas ejection unit when necessary. On the other hand, while removing the powder, the removed powder is sucked and collected by the powder collecting unit. Only the powder strongly bound by the undried ink in the image area adheres to the printing paper thereafter.
【００１０】[0010]
【実施例】次に本発明の粉体供給装置を図１（ａ）
（ｂ）に示す一実施例により説明すると、２３が排紙
胴、３０が印刷紙５を搬送するチエーングリッパ装置、
３１が粉体を含有する気体を印刷紙５の表面に供給する
粉体供給部、３２が粉体４を含有する気体を吸引回収す
る粉体回収部、３３が印刷紙５のインキ６がない表面に
付着した粉体を噴射した気体流により飛散させる気体噴
射部である。EXAMPLE Next, the powder feeding apparatus of the present invention is shown in FIG.
The description will be made with reference to an embodiment shown in (b). Reference numeral 23 is a discharge cylinder, 30 is a chain gripper device for conveying the printing paper 5,
31 is a powder supply unit that supplies the gas containing the powder to the surface of the printing paper 5, 32 is a powder recovery unit that sucks and recovers the gas containing the powder 4, 33 is the ink 6 of the printing paper 5 It is a gas injection unit that scatters the powder adhered to the surface by the injected gas flow.
【００１１】上記粉体供給部３１は、ポンプ３１ａと、
同ポンプ３１ａから圧力空気を送られる粉体室３１ｂ
と、同粉体室３１ｂから延びて装置本体３４内に開口し
た粉体供給口３１ｄとを有し、上記粉体室３１ｂの内部
には、軸３１ｃ1 と毛３１ｃ2とよりなるファーブラシ
３１ｃが設けられており、同ファーブラシ３１ｃを回転
させて、粉体室３１ｂ内の粉体４を浮遊させるようにな
っている。The powder supply section 31 includes a pump 31a,
Powder chamber 31b to which pressurized air is sent from the pump 31a
And a powder supply port 31d extending from the powder chamber 31b and opening in the apparatus main body 34, and a fur brush 31c including a shaft 31c 1 and bristles 31c 2 inside the powder chamber 31b. The fur brush 31c is rotated to float the powder 4 in the powder chamber 31b.
【００１２】上記粉体回収部３２は、装置本体３４内に
開口した粉体回収口３２ａと、同粉体回収口３２ｂに接
続した真空吸引ポンプ３２ｂとを有している。上記気体
噴射部３３は、ポンプ３３ａと、同ポンプ３３ａからの
圧力空気を装置本体３４内に噴射する気体噴射口３３ｂ
とを有している。３５が上記粉体供給口３１ｄに対向し
て装置本体３４の底面部３４ａ側（印刷紙５の裏面側）
に配設した平板状の電極板、３６が高圧電源、３７が印
刷紙受け、３４ｂが装置本体３４の側面部である。The powder recovery section 32 has a powder recovery port 32a opened in the apparatus main body 34 and a vacuum suction pump 32b connected to the powder recovery port 32b. The gas injection unit 33 includes a pump 33a and a gas injection port 33b for injecting the compressed air from the pump 33a into the apparatus main body 34.
And have. 35 is opposed to the powder supply port 31d and is on the bottom surface portion 34a side of the apparatus main body 34 (the back surface side of the printing paper 5).
Is a flat electrode plate, 36 is a high voltage power source, 37 is a printing paper receiver, and 34b is a side surface portion of the apparatus main body 34.
【００１３】装置本体３４は、箱形で、粉体供給部３１
と粉体回収部３２と気体噴射部３３と電極板３５とを一
体的に組み込み、チエーングリッパ装置３０の入口側及
び出口側のみが開口している。これら各部分は、金属製
で、接地されている。また印刷紙５と粉体回収部３２等
との間隔は、１２ｃｍ程度に設定されている。次に前記
図１（ａ）（ｂ）に示す粉体供給装置の作用を具体的に
説明する。The apparatus main body 34 is box-shaped and has a powder supply section 31.
The powder recovery unit 32, the gas injection unit 33, and the electrode plate 35 are integrally incorporated, and only the inlet side and the outlet side of the chain gripper device 30 are opened. Each of these parts is made of metal and is grounded. Further, the distance between the printing paper 5 and the powder collecting section 32 and the like is set to about 12 cm. Next, the operation of the powder supply device shown in FIGS. 1 (a) and 1 (b) will be specifically described.
【００１４】粉体供給部３１の粉体室３１ｂ内のファー
ブラシ３１ｃを回転させて、粉体室３１ｂ内の粉体４を
浮遊させる一方、圧力空気をポンプ３１ａから粉体室３
１ｂを経由して粉体供給口３１ｄへ送ることにより、粉
体４を含有する圧力空気を矢印方向に搬送している印刷
紙５の表面に吹き付けて、平板状の電極板３５による印
刷紙５の静電気力により澱粉等の粉体４を印刷紙５の画
線部の未乾燥インキ６に付着させる。The fur brush 31c in the powder chamber 31b of the powder supply unit 31 is rotated to float the powder 4 in the powder chamber 31b, while pressurized air is supplied from the pump 31a to the powder chamber 3 in the powder chamber 31b.
By sending the compressed air containing the powder 4 to the surface of the printing paper 5 which is being conveyed in the arrow direction by sending it to the powder supply port 31d via 1b, the printing paper 5 by the flat electrode plate 35 is formed. The powder 4 such as starch is attached to the undried ink 6 in the image area of the printing paper 5 by the electrostatic force of.
【００１５】このとき、平板状の電極板３５を粉体供給
口３１ｄに対向して装置本体３４の底面部３４ａ側（印
刷紙５の裏面側）に配設しており、静電気力の働く範囲
が広くて、粉体４の外部への飛散量が少なくなる。なお
前記図４に示す従来の粉体供給装置では、対向電極２０
がローラ状になっており、静電気力の働く範囲が狭く
て、粉体４の外部への飛散量が多くなる。At this time, the flat plate-shaped electrode plate 35 is disposed on the bottom surface portion 34a side of the apparatus main body 34 (the back surface side of the printing paper 5) so as to face the powder supply port 31d, and the range in which the electrostatic force acts. Is wide and the amount of the powder 4 scattered to the outside is small. In the conventional powder supply device shown in FIG. 4, the counter electrode 20
Is in the shape of a roller, the range in which the electrostatic force acts is narrow, and the amount of powder 4 scattered to the outside increases.
【００１６】印刷紙５は引き続き搬送されており、粉体
回収部３２及び気体噴出部３３の前方を通過する。ここ
には、電極板３５がないので、印刷紙５から静電気力が
消失し、気体噴出部３３から噴射される気体流により、
印刷紙５のインキ６のない表面（非画線部）に付着して
いる粉体４を飛散させる一方、飛散した粉体４を粉体回
収口３２ａと真空吸引ポンプ３２ｂとを有する粉体回収
部３２により吸引、回収する。The printing paper 5 continues to be conveyed and passes in front of the powder recovery unit 32 and the gas ejection unit 33. Since there is no electrode plate 35 here, the electrostatic force disappears from the printing paper 5 and the gas flow ejected from the gas ejection unit 33 causes
While the powder 4 adhering to the surface (non-image area) of the printing paper 5 on which the ink 6 is not present is scattered, the scattered powder 4 is recovered by the powder recovery port 32a and the vacuum suction pump 32b. The part 32 sucks and collects.
【００１７】印刷紙５は引き続き搬送されており、印刷
紙受け３７の上方に達するが、印刷紙５には、画線部の
未乾燥インキ６により強く束縛された粉体４のみが付着
している。枚葉印刷機を使用して、粉体供給部３１の空
気流量５００ｌ／ｍｉｎ、ファーブラシ３１ｃの回転数
１．２００ｒｐｍ、電極板３５への印加電圧３．０００
Ｖ、粉体回収部３２の真空吸引両３．０００ｌ／ｍｉ
ｎ、気体噴射部３３の噴射流量１．２００ｌ／ｍｉｎで
実験を行ったところ、通常の印刷物では、画線部のみに
粉体４が付着していることを確認した。また５０％網点
の画像の場合の粉体付着量は、５００個／ｃｍ2 であっ
た。いずれの場合も裏移りは、発生せず、印刷紙５の光
沢の低下もなかった。The printing paper 5 continues to be conveyed and reaches above the printing paper receiver 37, but only the powder 4 strongly bound by the undried ink 6 in the image area adheres to the printing paper 5. There is. Using a sheet-fed printing press, the air flow rate of the powder supply unit 31 is 500 l / min, the rotation speed of the fur brush 31c is 1.200 rpm, and the voltage applied to the electrode plate 35 is 3.000.
V, vacuum suction of powder recovery unit 32, both 3.000 l / mi
When an experiment was performed at an injection flow rate of 1.200 l / min for the gas ejecting unit 33, it was confirmed that the powder 4 adhered only to the image area in the ordinary printed matter. In the case of an image with 50% halftone dots, the powder adhesion amount was 500 pieces / cm 2 . In all cases, set-off did not occur and the gloss of the printing paper 5 did not decrease.
【００１８】粉体供給部３１、粉体回収部３２、気体噴
射部３３の流量及び電極板３５への印加電圧により、粉
体付着量を自由に制御できるので、あらゆる印刷物とに
対して裏移りを防止し且つ粉体付着量の過剰による光沢
低下を容易に防止し得る。なお前記実施例では、印刷紙
５の搬送にチエーングリッパ装置３０を使用しており、
その通路に粉体供給部３１等を設置できないので、気体
噴射を併用して、粉体４の回収効率を向上させている
が、印刷紙５の搬送にチエーングリッパ装置３０を使用
しない場合には、気体噴射部３３を設置しなくても、粉
体回収部３２を印刷紙５に近づけることにより、粉体４
を効率よく回収可能である。The amount of powder adhering can be freely controlled by the flow rates of the powder supply unit 31, the powder recovery unit 32, the gas injection unit 33 and the voltage applied to the electrode plate 35, so that it can be set off against any printed matter. And it is possible to easily prevent a decrease in gloss due to an excessive powder adhesion amount. In the above embodiment, the chain gripper device 30 is used to convey the printing paper 5,
Since the powder supply unit 31 and the like cannot be installed in that passage, gas injection is also used to improve the recovery efficiency of the powder 4. However, when the chain gripper device 30 is not used to convey the printing paper 5, Even if the gas injection unit 33 is not provided, the powder 4 can be obtained by bringing the powder recovery unit 32 close to the printing paper 5.
Can be collected efficiently.
【００１９】また図２に示すようにファーブラシ３１ｃ
を羽根車３１ｄに替えても差し支えない。また電極板３
５は、粉体回収部３２の近くまで延長しても差し支えな
い。但しこの場合には、気体噴射部３３の気体噴射力や
粉体回収部３２の真空吸引力を強くする必要がある。Further, as shown in FIG. 2, a fur brush 31c
Can be replaced with an impeller 31d. Also the electrode plate 3
No. 5 may be extended to the vicinity of the powder recovery unit 32. However, in this case, it is necessary to increase the gas injection force of the gas injection unit 33 and the vacuum suction force of the powder recovery unit 32.
【００２０】[0020]
【発明の効果】本発明の粉体供給装置は前記のように印
刷紙を搬送しているときに、粉体供給部から粉体を含有
する圧力空気を印刷紙の表面に吹き付ける一方、平板状
の電極板による印刷紙の静電気力により粉体を印刷紙の
画線部の未乾燥インキに付着させる。このとき、平板状
の電極板を粉体供給部に対向して配設しており、静電気
力の働く範囲が広くて、粉体の外部への飛散量が少なく
なる。印刷紙は引き続き搬送されており、粉体回収部及
び気体噴出部の前方を通過する。ここには、電極板がな
いので、印刷紙から静電気力が消失し、必要に応じて気
体噴出部から噴射される気体流により、印刷紙のインキ
のない表面（非画線部）に付着している粉体を除去する
一方、除去した粉体を粉体回収部により吸引、回収する
ので、裏移り及び印刷面の光沢低下を防止でき、周
囲の環境悪化を防止できる。As described above, the powder feeding device of the present invention blows the pressure air containing the powder from the powder feeding portion onto the surface of the printing paper while the printing paper is being conveyed as described above. The powder is attached to the undried ink on the image area of the printing paper by the electrostatic force of the printing paper by the electrode plate of. At this time, the flat electrode plate is disposed so as to face the powder supply portion, and the range in which the electrostatic force works is wide, and the amount of powder scattered to the outside is reduced. The printing paper is still conveyed and passes in front of the powder recovery unit and the gas ejection unit. Since there is no electrode plate here, the electrostatic force disappears from the printing paper, and if necessary, the gas flow ejected from the gas ejecting part adheres to the ink-free surface (non-image area) of the printing paper. While removing the powder that is present, the removed powder is sucked and collected by the powder collecting unit, so that it is possible to prevent set-off and deterioration of the gloss of the printing surface, and prevent deterioration of the surrounding environment.
【図１】（ａ）は本発明の粉体供給装置の一実施例を示
す側面図、（ｂ）は粉体供給部のファーブラシを示す側
面図である。FIG. 1A is a side view showing an embodiment of a powder supply apparatus of the present invention, and FIG. 1B is a side view showing a fur brush of a powder supply unit.
【図２】粉体供給部の羽根車を示す縦断側面図である。FIG. 2 is a vertical sectional side view showing an impeller of a powder supply unit.
【図３】従来の粉体供給装置の一例を示す側面図であ
る。FIG. 3 is a side view showing an example of a conventional powder supply device.
【図４】（ａ）は従来の粉体供給装置の他の例を示す側
面図、（ｂ）はその正面図である。FIG. 4A is a side view showing another example of a conventional powder supply device, and FIG. 4B is a front view thereof.
【図５】従来の粉体供給装置のさらに他の例を示す側面
図である。FIG. 5 is a side view showing still another example of the conventional powder supply device.
４ 粉体 ５ 印刷紙 ６ インキ ２３ 排紙胴 ３０ チエーングリッパ装置 ３１ 粉体供給部 ３２ 粉体回収部 ３３ 気体噴射部 ３５ 電極板 ３６ 電源 4 Powder 5 Printing Paper 6 Ink 23 Paper Discharging Cylinder 30 Chain Gripper Device 31 Powder Supply Section 32 Powder Collection Section 33 Gas Injection Section 35 Electrode Plate 36 Power Supply
Claims (3)
給する粉体供給部と、上記粉体を含有する気体を吸引回
収する粉体回収部と、上記印刷紙の裏面の近くに配設し
た電極板と、同電極板に電圧を印加する電源とを具えて
いることを特徴とした粉体供給装置。1. A powder supply unit for supplying a gas containing powder to the front surface of the printing paper, a powder recovery unit for sucking and recovering the gas containing the powder, and a vicinity of the back surface of the printing paper. A powder supply apparatus comprising: an electrode plate provided and a power source for applying a voltage to the electrode plate.
対向して配設した請求１記載の粉体供給装置。2. The powder supply device according to claim 1, wherein the electrode plate is arranged so as to face a supply port of the powder supply unit.
ている粉体を噴射した気体流により飛散させる気体噴射
部を前記粉体回収部の近くに配設した請求項１記載の粉
体供給装置。3. The powder according to claim 1, wherein a gas jetting section for scattering the powder adhering to the ink-free surface of the printing paper by a jetted gas flow is arranged near the powder collecting section. Supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10863495A JPH08300624A (en) | 1995-05-02 | 1995-05-02 | Powder feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10863495A JPH08300624A (en) | 1995-05-02 | 1995-05-02 | Powder feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08300624A true JPH08300624A (en) | 1996-11-19 |
Family
ID=14489777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10863495A Withdrawn JPH08300624A (en) | 1995-05-02 | 1995-05-02 | Powder feeding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08300624A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0844081A1 (en) * | 1996-11-21 | 1998-05-27 | PLATSCH, Hans G. | Method and apparatus for powdering products, in particular printed products |
| JP2001001496A (en) * | 1999-06-24 | 2001-01-09 | Toppan Printing Co Ltd | Apparatus and method for collecting dust for printer |
| JP2006142284A (en) * | 2004-11-19 | 2006-06-08 | Weitmann & Konrad Gmbh & Co Kg | Spray nozzle and method for applying powder spraying to freshly printed product |
| WO2008125589A2 (en) | 2007-04-12 | 2008-10-23 | Henkel Ag & Co. Kgaa | Tris(heterocyclyl) metal complexes as bleach catalysts |
-
1995
- 1995-05-02 JP JP10863495A patent/JPH08300624A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0844081A1 (en) * | 1996-11-21 | 1998-05-27 | PLATSCH, Hans G. | Method and apparatus for powdering products, in particular printed products |
| JP2001001496A (en) * | 1999-06-24 | 2001-01-09 | Toppan Printing Co Ltd | Apparatus and method for collecting dust for printer |
| JP2006142284A (en) * | 2004-11-19 | 2006-06-08 | Weitmann & Konrad Gmbh & Co Kg | Spray nozzle and method for applying powder spraying to freshly printed product |
| WO2008125589A2 (en) | 2007-04-12 | 2008-10-23 | Henkel Ag & Co. Kgaa | Tris(heterocyclyl) metal complexes as bleach catalysts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020702 |