JPH0727155Y2 - Offset printing machine - Google Patents
Offset printing machineInfo
- Publication number
- JPH0727155Y2 JPH0727155Y2 JP1989043348U JP4334889U JPH0727155Y2 JP H0727155 Y2 JPH0727155 Y2 JP H0727155Y2 JP 1989043348 U JP1989043348 U JP 1989043348U JP 4334889 U JP4334889 U JP 4334889U JP H0727155 Y2 JPH0727155 Y2 JP H0727155Y2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- chrome
- water
- offset printing
- printing machine
- 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
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案はオフセット印刷機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an offset printing machine.
本考案者は、特開昭60-192695、実開昭61-84247、特開
昭61-84248、特開昭63-157549等において、印刷面に版
胴の前部画線が後部画線の中に残影の様に現われたり細
かい縦筋状にインキ斑が現れたりするゴーストと呼ばれ
る印刷不良の問題を指摘し、それが版胴に水やインキを
転写供給して生じる水やインキの供給ローラ表面の塗膜
の斑に起因することに着目し、それらの供給ローラにド
クターを適用する方法（特開昭61-84247、特開昭61-842
48）や供給ローラを軸芯方向に摺動させる方法（特開昭
63-13747）等の解決手段を開示している。The inventor of the present invention has disclosed in JP-A-60-192695, JP-A-61-84247, JP-A-61-84248, JP-A-63-157549, etc. that the front image of the plate cylinder is the rear image We pointed out the problem of printing defects called ghosts that appear like a shadow in the inside or fine ink streaks appearing in the form of fine vertical streaks, which is caused by the transfer and supply of water and ink to the plate cylinder. Focusing on the cause of the unevenness of the coating film on the roller surface, a method of applying a doctor to those supply rollers (JP-A-61-84247, JP-A-61-842)
48) and a method of sliding the supply roller in the axial direction (Japanese Patent Application Laid-Open No.
63-13747) and the like are disclosed.
本考案者が開示する上記手段の中で、供給ローラを軸芯
方向に摺動させる方法は印刷不良の解消に実用されてい
るが、本考案はそれを更に効果的にしようとするもので
ある。Among the above-mentioned means disclosed by the present inventor, the method of sliding the supply roller in the axial direction has been put into practical use for eliminating printing defects, but the present invention intends to make it more effective. .
本考案に係るオフセット印刷機は、回転し接触して版胴
11に水を供給する水着ローラ15と、回転し接触して水着
ローラ15に水を供給すくクロムローラ14と、回転し接触
してクロムローラ14に水を供給する調量ローラ13を有す
るオフセット印刷機の版胴加湿装置において、クロムロ
ーラ14に接触する水着ローラ15と調量ローラ13との各接
触位置における回転方向が、それぞれクロムローラ15の
回転方向に対して逆向きになることを特徴とするもので
ある。The offset printing machine according to the present invention rotates and comes into contact with the plate cylinder.
Offset printing having a swimsuit roller 15 for supplying water to 11, a chrome roller 14 for rotating and contacting to supply water to the swimwear roller 15, and a metering roller 13 for rotating and contacting to supply water to the chrome roller 14. In the plate cylinder humidifier of the machine, the rotating direction at each contact position of the swimsuit roller 15 and the metering roller 13 contacting the chrome roller 14 is opposite to the rotating direction of the chrome roller 15. To do.
即ち、従来のオフセット印刷機において回転接触する全
てのローラの各接触位置における回転方向は互いに逆ら
わない同じ向きになっているが、本考案では、版胴11に
接するローラと版胴とは接触位置での回転方向が同じで
あるが、その版胴11に水22を転写供給するために設けら
れる多数のローラの中で、互いに回転接触し合う少なく
とも２本１組（一対）のローラの一方が他方に逆らって
回転する様に回転方向を逆向きにし、その一方のローラ
が他方のローラの表面を掻き撫で水膜22を平に均一にす
るドクターの如き作用をなす様にする。That is, in the conventional offset printing machine, the rotation directions of all the rollers which are in rotary contact are the same without being opposed to each other.However, in the present invention, the roller contacting the plate cylinder 11 and the plate cylinder are in the contact position. Although the same rotation direction is used, one of at least two (one pair) rollers that are in rolling contact with each other among a number of rollers provided to transfer and supply the water 22 to the plate cylinder 11 are The direction of rotation is reversed so that it rotates in opposition to the other, and one of the rollers has the function of a doctor that scratches the surface of the other roller to even out the water film 22 evenly.
周知の通りオフセット印刷機では、版胴11には水元ロー
ラ12や調量ローラ13、クロムローラ14等を経由して水着
ローラ15から水が供給されており、又、数次の練りロー
ラ16・17やデイストリビューターローラ18を経由してイ
ンキフオームローラ19からインキが供給されており、そ
れらのローラにはライダーローラ20・21が適宜取り付け
られている。As is well known, in an offset printing machine, water is supplied to a plate cylinder 11 from a swimsuit roller 15 via a water source roller 12, a metering roller 13, a chrome roller 14, etc., and a kneading roller 16 of several orders. Ink is supplied from the ink form roller 19 via 17 and distributor roller 18, and rider rollers 20 and 21 are appropriately attached to these rollers.
本考案において「少なくとも２本１組（一対）のローラ
間で逆向きにする」とは、具体的に言えば、それらのロ
ーラの中の水着ローラ15とクロムローラ14の間、クロム
ローラ14と調量ローラ13の間、水着ローラ15とライダー
ローラ20の間等々、向き合う２本のローラが多数ある中
の何れか少なくとも１箇所の２本のローラの間で回転方
向が逆向きになることを意味し、又、「逆向き」とは、
それらのローラの軸芯周りの回転方向が逆と言うことで
はなく、一方が他方に逆らって回転すること、即ち、ロ
ーラの接触面での回転の向きが逆になると言うことを意
味し、従って、軸芯周りの回転方向で言えば２本１組の
ローラの各回転方向が同じになることを意味する。In the present invention, "to reverse the direction between at least two rollers (one pair)" is, specifically, between the swimwear roller 15 and the chrome roller 14 among those rollers, and between the chrome roller 14 and the chrome roller 14. Between the metering rollers 13, between the swimsuit roller 15 and the rider roller 20, etc., it is possible that the direction of rotation is opposite between at least one of the two rollers that face each other. Meaning and "reverse" means
It does not mean that the rotation directions of the rollers around the axis are opposite, but that one rotates against the other, that is, the direction of rotation at the contact surface of the rollers is opposite, and therefore In terms of the rotation direction around the axis, it means that the rotation directions of the two rollers are the same.
これらのローラの中でクロムローラ14は表面がスベスベ
した金属ローラであり、水がインキに比べて可なり低粘
であるから、その回転する遠心力と水22の表面張力が作
用し、特にローラ径が太い場合や水供給量が多く水膜が
厚くなったりする場合、或は、水の表面張力が大きくな
ったりする場合には、そのクロムローラ14の表面に水の
縦筋23が生じ易く、ベタ刷りや平網刷りではその縦筋23
が水着ローラ15に転写され、それがそのまま版胴11に転
写され、印刷斑となって印刷面24に顕著に現われ易い。Among these rollers, the chrome roller 14 is a metal roller having a smooth surface, and since water has a considerably low viscosity as compared with ink, its rotating centrifugal force and the surface tension of the water 22 act, and especially the roller. When the diameter is large, the water supply amount is large and the water film is thick, or the surface tension of water is large, vertical lines 23 of water are likely to occur on the surface of the chrome roller 14. , The vertical stripes in solid printing and flat screen printing 23
Is transferred to the swimsuit roller 15, which is transferred to the plate cylinder 11 as it is, and it is likely that printing spots appear remarkably on the printing surface 24.
従って、版胴11に水を供給する数本のローラの中でもク
ロムローラ14を間に挟む水着ローラ15および調量ローラ
13とクロムローラ14との二箇所で本考案を実施するこ
と、即ち、クロムローラ14を水着ローラ15と調量ローラ
13に対してそれぞれ逆向きに回転させることが最も効果
的である。Therefore, among the several rollers that supply water to the plate cylinder 11, the swimsuit roller 15 and the metering roller which sandwich the chrome roller 14 therebetween.
13 and the chrome roller 14 to implement the present invention, that is, the chrome roller 14 and the swimsuit roller 15 and the metering roller.
It is most effective to rotate them in the opposite directions with respect to each other.
本考案では、クロムローラ14に対し水着ローラ15と調量
ローラ13の間の回転を逆向きにしたので、なによりもま
ず、調量ローラ13の周速に加速された調量ローラ13の表
面での水膜の速度は、その水膜がクロムローラ14に転移
される時点でゼロになり、調量ローラ13で調量された所
要の水分だけがクロムローラ14に転移されるので、クロ
ムローラ14の表面には必要以上に厚い水膜は出来ず、ク
ロムローラ14の遠心力により、クロムローラ14の表面に
付着した水膜に縦筋23が出来なくなると共に、更に、ク
ロムローラ14の表面に出来た水の縦筋23がクロムローラ
14と水着ローラ15との間で掻き撫でられて平で均一な水
膜を水着ローラ15の表面に形成し、それがそのまま版胴
11に転写されるので、印刷斑の目立ち易いベタ刷りや平
網刷りでの印刷不良解消に効果的であり、それがクロム
ロール14の回転方向をこれと接する水着ロール15と調量
ローラ13に対し回転方向を変えると言う単純な手段によ
って達成されるので本考案は極めて実用的である。In the present invention, since the rotation between the swimsuit roller 15 and the metering roller 13 is reversed with respect to the chrome roller 14, first of all, the surface of the metering roller 13 accelerated to the peripheral speed of the metering roller 13 is first of all. The velocity of the water film at 0 becomes zero when the water film is transferred to the chrome roller 14, and only the required moisture metered by the metering roller 13 is transferred to the chrome roller 14, so the chrome roller The surface of 14 does not have an unnecessarily thick water film, and the centrifugal force of the chrome roller 14 prevents vertical stripes 23 from forming on the water film adhering to the surface of the chrome roller 14, and further The vertical line 23 of the produced water is a chrome roller.
14 and the swimsuit roller 15 are scratched to form a flat and uniform water film on the surface of the swimsuit roller 15, which is the plate cylinder as it is.
Since it is transferred to 11, it is effective in eliminating printing defects in solid printing and flat screen printing where printing spots are easily noticeable, and it is possible to change the rotation direction of chrome roll 14 to swimwear roll 15 and metering roller 13 which contact it The present invention is extremely practical because it is achieved by a simple means of changing the direction of rotation.
第１図は本考案に係るオフセット印刷機の要部側面図で
あり、第２図は従来のオフセット印刷機の水供給部での
部分斜視図、第３図は第２図に示すクロムローラの表面
部分での拡大断面図である。 11…圧胴、12…水元ローラ、13…調量ローラ、14…クロ
ムローラ、15…水着ローラ、16・17…練りローラ、18…
デイストリビューターローラ、19…インキフオームロー
ラ、20・21…ライダーローラ、22…水、23…縦筋、24…
印刷面。FIG. 1 is a side view of a main part of an offset printing machine according to the present invention, FIG. 2 is a partial perspective view of a water supply section of a conventional offset printing machine, and FIG. 3 is a chrome roller shown in FIG. It is an expanded sectional view in a surface part. 11 ... impression cylinder, 12 ... Mizumoto roller, 13 ... metering roller, 14 ... chrome roller, 15 ... swimwear roller, 16 ・ 17 ... kneading roller, 18 ...
Distributor roller, 19 ... Ink form roller, 20 ・ 21 ... Rider roller, 22 ... Water, 23 ... Vertical streak, 24 ...
Print side.
Claims (1)
ローラ15と、回転し接触して水着ローラ15に水を供給す
くクロムローラ14と、回転し接触してクロムローラ14に
水を供給する調量ローラ13を有するオフセット印刷機の
版胴加湿装置において、クロムローラ14に接触する水着
ローラ15と調量ローラ13との各接触位置における回転方
向が、それぞれクロムローラ15の回転方向に対して逆向
きになることを特徴とするオフセット印刷機。1. A swimsuit roller 15 that rotates and contacts to supply water to the plate cylinder 11, a chrome roller 14 that rotates and contacts to supply water to the swimwear roller 15, and a chrome roller 14 that rotates and contacts to chrome roller 14. In a plate cylinder humidifier of an offset printing machine having a metering roller 13 for supplying water, the rotation direction at each contact position between the swimsuit roller 15 and the metering roller 13 contacting the chrome roller 14 is the rotation of the chrome roller 15, respectively. An offset printing machine characterized by turning in the opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989043348U JPH0727155Y2 (en) | 1989-04-13 | 1989-04-13 | Offset printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989043348U JPH0727155Y2 (en) | 1989-04-13 | 1989-04-13 | Offset printing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135234U JPH02135234U (en) | 1990-11-09 |
| JPH0727155Y2 true JPH0727155Y2 (en) | 1995-06-21 |
Family
ID=31555690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989043348U Expired - Fee Related JPH0727155Y2 (en) | 1989-04-13 | 1989-04-13 | Offset printing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727155Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5736661A (en) * | 1980-08-14 | 1982-02-27 | Komori Printing Mach Co Ltd | Water feeding of press |
| JPS57107837A (en) * | 1980-12-25 | 1982-07-05 | Akiyama Insatsuki Seizo Kk | Water supplying mechanism in printing machine |
| JPS57123059A (en) * | 1981-01-22 | 1982-07-31 | Komori Printing Mach Co Ltd | Damping device for press |
| JPS57125054A (en) * | 1981-01-28 | 1982-08-04 | Komori Printing Mach Co Ltd | Water supply device for printing machine |
-
1989
- 1989-04-13 JP JP1989043348U patent/JPH0727155Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02135234U (en) | 1990-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0451348B2 (en) | ||
| JPH04232744A (en) | Film dampening device for offset rotary printing machine | |
| US4233898A (en) | Reversible newspaper press | |
| US4809606A (en) | Oscillating form roller and apparatus and method for controlling the oscillation thereof | |
| JPS60110452A (en) | Device for applying ink on lithographic plate with ink receiving section and ink rejecting section | |
| JPS5845955A (en) | Ink device for rotary press | |
| US4488485A (en) | Simplified inking unit | |
| US3902417A (en) | Wetting system for rotary offset printing presses | |
| US3326122A (en) | Dampening system for offset press | |
| US2141607A (en) | Inking mechanism for printing machines | |
| JPH0727155Y2 (en) | Offset printing machine | |
| US4624182A (en) | Device for dampening a printing plate | |
| JPH08230142A (en) | Dampening unit for printing press | |
| JPH10119235A (en) | Method for dampening plate for offset printing | |
| US5123346A (en) | Dampening system | |
| JPH034385B2 (en) | ||
| JPH0739643Y2 (en) | Roller for printing mechanism of rotary printing machine | |
| JPH03114834A (en) | Device for driving wetting device used for offset printer | |
| US4519312A (en) | Inking unit | |
| GB2040229A (en) | Inking unit for printing machine | |
| JPH01166962A (en) | Inking device for rotary press | |
| JPS60165282A (en) | Ink feeder for printer | |
| US4437406A (en) | Inking apparatus for an offset press | |
| JPS6256148A (en) | Inking device for rotary press | |
| GB2034250A (en) | An inking and Moistening Mechanism for a Rotary Offset Printing Press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |