JPH04358835A - Printing error detecting apparatus - Google Patents
Printing error detecting apparatusInfo
- Publication number
- JPH04358835A JPH04358835A JP3159891A JP15989191A JPH04358835A JP H04358835 A JPH04358835 A JP H04358835A JP 3159891 A JP3159891 A JP 3159891A JP 15989191 A JP15989191 A JP 15989191A JP H04358835 A JPH04358835 A JP H04358835A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- printed matter
- air
- sensor
- 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.)
- Pending
Links
- 230000005611 electricity Effects 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、移動している印刷物
からの反射光をセンサで受けて反射光量を電気量に変換
し、この電気量を利用して印刷物の印刷エラーを検出す
る印刷エラー検出装置に関する。[Industrial Application Field] This invention detects printing errors in printed matter by using a sensor that receives reflected light from moving printed matter, converts the amount of reflected light into an amount of electricity, and uses this amount of electricity to detect printing errors in printed matter. This invention relates to a detection device.
【０００２】0002
【従来の技術】印刷機、例えば枚葉印刷機で印刷された
印刷物の品質を管理したり印刷エラーを検出するために
印刷エラー検出装置が用いられる。2. Description of the Related Art A printing error detection device is used to control the quality of printed matter printed by a printing press, such as a sheet-fed printing press, and to detect printing errors.
【０００３】印刷エラーは、色ムラ、油よごれ、しみ、
印刷物におけるその他の印刷不良等を意味する。Printing errors include uneven color, oil stains, stains,
Refers to other printing defects in printed matter.
【０００４】印刷エラーを早期に発見するためには、人
間の目視に頼るか、印刷機の印刷ライン上に印刷エラー
検出装置を設置する必要がある。印刷エラー検出装置を
設ける場合、ドラム等の送り手段によって送られている
印刷物を検査するのが一般的である。この際、検査精度
を高めるためには、送り手段表面における印刷物のバタ
ツキを防止し、印刷物を送り手段の表面に密着させる必
要がある。In order to detect printing errors at an early stage, it is necessary to rely on human visual inspection or to install a printing error detection device on the printing line of the printing press. When a printing error detection device is provided, it is common to inspect printed matter being fed by a feeding means such as a drum. At this time, in order to improve the inspection accuracy, it is necessary to prevent the printed matter from fluttering on the surface of the feeding means and to bring the printed matter into close contact with the surface of the feeding means.
【０００５】一般に、印刷直後の印刷物はインキが完全
に乾燥していない。従って、送り手段表面に密着させる
ためにローラなどの接触子によって印刷物を送り手段の
表面に押しつけることはできない。[0005] Generally, the ink of printed matter has not completely dried immediately after printing. Therefore, it is not possible to press the printed matter against the surface of the feeding means using a contactor such as a roller in order to bring it into close contact with the surface of the feeding means.
【０００６】そこで、従来は、印刷物を帯電させて印刷
物のバタツキを押え、これを送り手段の表面に密着させ
る装置が提案されている。[0006] Conventionally, therefore, a device has been proposed which charges the printed material to suppress the flapping of the printed material and brings it into close contact with the surface of the feeding means.
【０００７】[0007]
【発明が解決しようとする課題】印刷物を帯電させる装
置では、印刷ライン下流において、例えば印刷物の積み
上げ時に帯電状態が完全に解除されずに不都合が生じて
しまう。SUMMARY OF THE INVENTION In an apparatus for charging printed matter, the charged state is not completely released downstream of the printing line, for example, when the printed matter is piled up, resulting in an inconvenience.
【０００８】このような不都合を解決するために、本発
明者は印刷物にエアを常時吹き付ける装置を試作したが
、印刷物に定常的にエアを吹付ける装置では、吹付けた
エアが、印刷物の前端又は後端から印刷物の下面（すな
わち印刷物と送り手段の間）に入り込んで、印刷物を浮
き上がらせてバタツキ現象を生じる不都合があった。In order to solve such inconveniences, the inventor of the present invention prototyped a device that constantly blows air onto printed materials. Otherwise, there is an inconvenience that the paper enters the lower surface of the printed material (that is, between the printed material and the feeding means) from the rear end, lifting the printed material and causing a flapping phenomenon.
【０００９】この発明は、前述の欠点を解決し、印刷直
後の印刷物を検査する場合にも良好な精度で検査するこ
とができる印刷エラー検出装置を提供することを目的と
している。SUMMARY OF THE INVENTION It is an object of the present invention to provide a printing error detection device which solves the above-mentioned drawbacks and is capable of inspecting printed matter with good accuracy even when inspecting printed matter immediately after printing.
【００１０】0010
【課題を解決するための手段】本発明の要旨は、移動し
ている印刷物からの反射光をセンサで受けて反射光量を
電気量に変換し、この電気量を利用して印刷物の印刷エ
ラーを検出する印刷エラー検出装置において、センサ１
１の近くに設けられていて送り手段によって送られてい
る印刷物３０に向ってエアを吹付けるエア吹付け手段１
３，１６と、エア吹付け手段１３，１６の動作をコント
ロールする制御手段１４，１５とを備え、印刷物の送り
状況に応じて印刷物３０に間欠的にエアを吹付ける構成
にしたことを特徴とする印刷エラー検出装置である。[Means for Solving the Problems] The gist of the present invention is to receive reflected light from a moving printed matter with a sensor, convert the amount of reflected light into an amount of electricity, and use this amount of electricity to prevent printing errors in printed matter. In the printing error detection device to detect, sensor 1
Air blowing means 1 that blows air toward the printed matter 30 that is provided near 1 and is being fed by the feeding means.
3, 16 and control means 14, 15 for controlling the operation of the air blowing means 13, 16, and is configured to intermittently blow air onto the printed material 30 depending on the feeding status of the printed material. This is a printing error detection device.
【００１１】[0011]
【作用】制御手段１４，１５によってエア吹付け手段１
３，１６を制御し、印刷物３０の送り状況に応じて印刷
物３０に間欠的にエアを吹付けるため、印刷物３０のバ
タツキが防止され、印刷物３０を送り手段２１に密着さ
せることができる。[Operation] The air blowing means 1 is controlled by the control means 14 and 15.
3 and 16 and intermittently blows air onto the printed material 30 according to the feeding status of the printed material 30, thereby preventing the printed material 30 from fluttering and making it possible to bring the printed material 30 into close contact with the feeding means 21.
【００１２】間欠吹付けのタイミングの好適例をいえば
、例えば、印刷物３０の送り方向の前端部３０ｄ及び後
端部３０ｂにはエアの吹きつけをせず、印刷物の中間部
分にのみエアを吹きつけるようにする。[0012] To give a preferable example of the timing of intermittent spraying, for example, air is not blown to the front end 30d and rear end 30b of the printed matter 30 in the feeding direction, but air is blown only to the middle part of the printed matter. Try to put it on.
【００１３】[0013]
【実施例】以下、図面を参照して本発明の実施例を説明
する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
【００１４】図１は本発明の印刷エラー検出装置９を設
けた枚葉印刷機の一部を示す概念図である。図２は図１
の一部分を拡大したもので、印刷物押え装置１０を模式
的に示す概念図である。図３は印刷面を上から見た図で
爪、センサ、吹付け手段が模式的に示してある。FIG. 1 is a conceptual diagram showing a part of a sheet-fed printing press equipped with a printing error detection device 9 of the present invention. Figure 2 is Figure 1
2 is a partially enlarged conceptual diagram schematically showing a printed matter holding device 10. FIG. FIG. 3 is a top view of the printing surface, and schematically shows the claws, sensors, and spraying means.
【００１５】通常のオフセット枚葉印刷機の印刷ライン
２０の途中に印刷エラー検出装置９が設けてある。印刷
ライン２０は中間胴２２，２３、圧胴２１、ブラシ胴２
５及び版胴２４を有している。中間胴２２，２３や、圧
胴には、印刷物３０を押えるための爪２６が設けてある
。A printing error detection device 9 is provided in the middle of a printing line 20 of a normal offset sheet-fed printing press. The printing line 20 includes intermediate cylinders 22 and 23, an impression cylinder 21, and a brush cylinder 2.
5 and a plate cylinder 24. The intermediate cylinders 22, 23 and the impression cylinder are provided with claws 26 for pressing the printed matter 30.
【００１６】図１は印刷終了後に印刷物３０を圧胴２１
から中間胴２３にくわえ替える状態を示している。FIG. 1 shows that the printed matter 30 is transferred to the impression cylinder 21 after printing is completed.
The figure shows a state in which the grip is changed from the middle to the intermediate barrel 23.
【００１７】なお、インキ供給手段その他の部位は本発
明の要旨と直接関係がないので、簡単のために図示せず
説明も省略する。It should be noted that the ink supply means and other parts are not directly related to the gist of the present invention, so for the sake of brevity, they are not shown and their description will be omitted.
【００１８】また、カラー印刷の場合には、図１に示し
たラインの上流に同様のラインが数個設けられる。下流
には印刷物の積み上げ部が設けられる。積み上げ部の手
前では、印刷面上に適宜パウダ等が供給されてインキの
乾燥が行われる。In the case of color printing, several similar lines are provided upstream of the lines shown in FIG. A stacking section for printed matter is provided downstream. Before the stacking section, powder or the like is appropriately supplied onto the printing surface to dry the ink.
【００１９】印刷エラー検出装置９はセンサ１１、装置
本体１２及び印刷物押え装置１０を備えている。センサ
１１は発光素子と受光素子を備え、発光素子から印刷物
３０の表面に光を照射し、その反射光を受光素子で受け
て電気量に変換する構成になっている。装置本体１２は
、センサ１１から得た電気量を予め定めた基準電気量と
比較することによって印刷物のエラーを検出する構成に
なっている。The printing error detection device 9 includes a sensor 11, a device main body 12, and a printed matter holding device 10. The sensor 11 includes a light emitting element and a light receiving element, and is configured to irradiate light from the light emitting element onto the surface of the printed matter 30, receive the reflected light with the light receiving element, and convert it into an amount of electricity. The apparatus main body 12 is configured to detect errors in printed matter by comparing the amount of electricity obtained from the sensor 11 with a predetermined reference amount of electricity.
【００２０】装置本体１２は、エラーを検出したら、１
）ブザーを鳴らす、２）ディスプレーに表示する、３）
エラー個所をプリントアウトする、４）エラー個所に印
をつける、５）印刷機械を停止する、６）不良紙を排出
する、等の動作を適宜行う構成になっている。When the device body 12 detects an error, it
) Sound the buzzer, 2) Display on the display, 3)
The printer is configured to appropriately perform operations such as printing out the error location, 4) marking the error location, 5) stopping the printing machine, and 6) ejecting defective paper.
【００２１】なお、センサ１１と装置本体１２は、例え
ば特開昭６３−４７１４５号公報や６３−１４７２７１
号公報に開示されたものを用いることができる。従って
、本明細書においては詳述しない。The sensor 11 and the device main body 12 are described in, for example, Japanese Patent Application Laid-open No. 63-47145 and No. 63-147271.
It is possible to use the one disclosed in the above publication. Therefore, it will not be described in detail herein.
【００２２】印刷物押え装置１０は印刷物３０のバタツ
キを防止して圧胴２１に密着させるためのものである。
印刷物押え装置１０はエア吹付け手段１３、１６と制御
手段１４、１５を備えている。エア吹付け手段は多数の
ノズル１３とエア源１６から構成される。制御手段は流
量制御弁１４とタイミング手段１５で構成されている。The printed matter holding device 10 is for preventing the printed matter 30 from fluttering and bringing it into close contact with the impression cylinder 21. The printed matter holding device 10 includes air blowing means 13 and 16 and control means 14 and 15. The air blowing means is composed of a number of nozzles 13 and an air source 16. The control means is composed of a flow control valve 14 and a timing means 15.
【００２３】図１〜３に示すように、多数のノズル１３
がセンサ１１のすぐ手前側で、印刷物３０の横方向に一
列に配置されている。ノズル１３の上流にはノズル１３
に供給するエアの流量を調整するための流量制御弁１４
が接続されている。流量制御弁１４にはエア源１６が設
けてあり、流量制御弁１４に圧縮空気を供給する。後述
するように、流量制御弁１４はタイミング手段１５によ
って圧胴２１と同期的にコントロールされる。As shown in FIGS. 1 to 3, a large number of nozzles 13
are arranged in a row in the lateral direction of the printed material 30 immediately in front of the sensor 11. Upstream of the nozzle 13 is the nozzle 13.
Flow rate control valve 14 for adjusting the flow rate of air supplied to
is connected. The flow control valve 14 is provided with an air source 16 that supplies compressed air to the flow control valve 14 . As will be described later, the flow control valve 14 is controlled synchronously with the impression cylinder 21 by a timing means 15.
【００２４】図２を参照してタイミング手段１５を説明
する。The timing means 15 will be explained with reference to FIG.
【００２５】タイミング手段１５はカム１８とフォロワ
部材１９を備えている。カム１８は圧胴２１の軸２７と
一体的に設けてあり、圧胴２１と共に回転する。カム１
８には大径部１８ａと小径部１８ｂが２つづつ形成され
ていて、両者は交互に配置される。大径部１８ａと小径
部１８ｂは後述するように、印刷物の送り方向長さに対
応させて配置する。Timing means 15 includes a cam 18 and a follower member 19. The cam 18 is provided integrally with the shaft 27 of the impression cylinder 21 and rotates together with the impression cylinder 21. cam 1
8 has two large diameter portions 18a and two small diameter portions 18b, which are arranged alternately. The large diameter portion 18a and the small diameter portion 18b are arranged to correspond to the length of the printed material in the feeding direction, as will be described later.
【００２６】カムは、図４に示したように、カム本体２
８Ａと角度調整部材２８Ｂで構成すると有利である。こ
の場合には、カム本体２８Ａと角度調整部材２８Ｂの相
対位置をずらして軸２７に固定することによって、大径
部と小径部の範囲を自由に変えることができる。こうし
て、印刷物の長さに対応させるのである。なお、衝激を
押えるため大径部と小径部の中間部分は図面よりも丸く
構成する。As shown in FIG. 4, the cam has a cam body 2.
8A and an angle adjusting member 28B. In this case, by shifting the relative positions of the cam body 28A and the angle adjusting member 28B and fixing them to the shaft 27, the ranges of the large diameter portion and the small diameter portion can be freely changed. In this way, it is made to correspond to the length of the printed matter. In addition, in order to suppress impact, the intermediate portion between the large diameter part and the small diameter part is configured to be more rounded than in the drawing.
【００２７】カム１８の上方にはフォロワ部材１９が設
けられている。フォロワ部材１９は上下方向に移動可能
なカムフォロワ１９ａを備えている。カムフォロワ１９
ａはばねによってカム１８の方向に付勢されている。カ
ム１８が矢印Ａの方向に回転すると、カムフォロワ１９
ａは矢印Ｂの方向に上下に移動する。A follower member 19 is provided above the cam 18. The follower member 19 includes a cam follower 19a that is movable in the vertical direction. cam follower 19
a is urged toward the cam 18 by a spring. When the cam 18 rotates in the direction of arrow A, the cam follower 19
a moves up and down in the direction of arrow B.
【００２８】流量制御弁１４はカムフォロワ１９ａの上
下動によって開閉する構成になっている。すなわち、カ
ム１８の大径部１８ａにカムフォロワ１９ａが当接し、
カロフォロワ１９ａが上方位置にある時に弁１４が開く
。また、カム１８の小径部１８ｂにカムフォロワ１９ａ
が当接し、カムフォロワ１９ａが下方位置にある時に弁
１４が閉じる。The flow rate control valve 14 is configured to be opened and closed by the vertical movement of the cam follower 19a. That is, the cam follower 19a contacts the large diameter portion 18a of the cam 18,
Valve 14 opens when callo follower 19a is in the upper position. In addition, a cam follower 19a is attached to the small diameter portion 18b of the cam 18.
When the cam follower 19a is in the lower position, the valve 14 is closed.
【００２９】吹付け動作の一例を図３を参照して説明す
る。An example of the spraying operation will be explained with reference to FIG.
【００３０】二重斜線領域３０ｃは印刷物３０における
印刷領域である。印刷物３０は矢印方向に送られる。ノ
ズル１３の下を斜線領域３０ａが通過する時に弁１４が
開き、ノズル１３から斜線領域３０ａにエアが吹付けら
れる。センサ１１がこれ以外の領域（印刷物の前後端領
域３０ｄ、３０ｂも含む）を走査する時には、弁１４を
閉じ、エアを吹付けないようにする。従って、印刷物の
送り方向の前後端からエアが印刷物の下面に回り込んで
、印刷物が圧胴２１から浮き上がってバタツくことがな
い。The double hatched area 30c is a printing area in the printed matter 30. The printed matter 30 is fed in the direction of the arrow. When the shaded area 30a passes under the nozzle 13, the valve 14 opens, and air is blown from the nozzle 13 to the shaded area 30a. When the sensor 11 scans other areas (including the front and rear end areas 30d and 30b of the printed material), the valve 14 is closed to prevent air from being blown. Therefore, air flows around to the bottom surface of the printed material from the front and rear ends in the feeding direction of the printed material, and the printed material does not float up from the impression cylinder 21 and flap.
【００３１】なお、本発明は前述の実施例に限定されな
い。例えば、ノズルをセンサの前方に配置してもよい。
この場合にはノズル１３を少し傾けて、センサの真下部
分にエアを吹付けるようにすると有利である。Note that the present invention is not limited to the above-described embodiments. For example, the nozzle may be placed in front of the sensor. In this case, it is advantageous to tilt the nozzle 13 a little so that the air is blown directly below the sensor.
【００３２】また、ノズルの形状や数は適宜変更可能で
あって、例えば吹出口は細長でもよい。Further, the shape and number of nozzles can be changed as appropriate; for example, the outlet may be elongated.
【００３３】さらに、冷却手段を設けて所定の温度に冷
却したエアを吹付けるようにしてもよい。Furthermore, a cooling means may be provided to blow air cooled to a predetermined temperature.
【００３４】また、弁制御手段はカム機構以外のもので
もよく、耐用寿命に問題がなければ電気的スイッチング
手段を用いることも可能である。回転式の弁を採用し、
その回転子に圧胴の回転を伝えて弁を開閉する構成にし
てもよい。Further, the valve control means may be other than a cam mechanism, and it is also possible to use an electric switching means if there is no problem with the service life. Adopts a rotary valve,
The valve may be opened and closed by transmitting the rotation of the impression cylinder to the rotor.
【００３５】[0035]
【発明の効果】本発明は、送り手段によって送られてい
る印刷物からの反射光をセンサで受けて反射光量を電気
量に変換し、この電気量を利用して印刷物の印刷エラー
を検出する印刷エラー検出装置が、センサ（１１）の近
くに設けられていて印刷物（３０）に向ってエアを吹付
けるエア吹付け手段（１３，１６）と、エア吹付け手段
（１３，１６）の動作をコントロールする制御手段（１
４，１５）とを備え、印刷物の送り状況に応じて印刷物
（３０）に間欠的にエアを吹付けてしているので、印刷
直後の印刷物を検査する場合に良好な精度で検査するこ
とができる。Effects of the Invention The present invention provides a printing method in which a sensor receives reflected light from a printed matter being sent by a feeding means, converts the amount of reflected light into an amount of electricity, and uses this amount of electricity to detect printing errors in printed matter. An error detection device is provided near the sensor (11) and controls the operation of air blowing means (13, 16) that blows air toward the printed matter (30) and the air blowing means (13, 16). Control means to control (1
4, 15), and air is intermittently blown onto the printed matter (30) according to the feeding status of the printed matter, so that it is possible to inspect the printed matter with good accuracy when inspecting the printed matter immediately after printing. can.
【図１】本発明の印刷エラー検出装置を印刷機の印刷ラ
インに設置した状態を示す概念図FIG. 1 is a conceptual diagram showing a printing error detection device of the present invention installed in a printing line of a printing press.
【図２】本発明の印刷エラー検出装置における印刷物押
え装置を示す拡大概念図FIG. 2 is an enlarged conceptual diagram showing a printed matter holding device in the printing error detection device of the present invention.
【図３】本発明装置における印刷物、センサ、ノズル、
爪を模式的に示した平面図[Fig. 3] Printed matter, sensor, nozzle, in the device of the present invention,
A plan view schematically showing a nail
【図４】本発明装置におけるタイミング手段のカムを示
す平面図FIG. 4 is a plan view showing a cam of the timing means in the device of the present invention.
９ 印刷エラー検出装置 １０ 印刷物押え装置 ３０ 印刷物 １３ ノズル １４ 流量制御弁 １５ タイミング手段 １６ エア源 １１ センサ １２ 装置本体 ◆ 9 Printing error detection device 10 Printed matter holding device 30 Printed matter 13 Nozzle 14 Flow control valve 15 Timing means 16 Air source 11 Sensor 12 Device body ◆
Claims (1)
ンサで受けて反射光量を電気量に変換し、この電気量を
利用して印刷物の印刷エラーを検出する印刷エラー検出
装置において、センサ（１１）の近くに設けられていて
送り手段によって送られている印刷物（３０）に向って
エアを吹付けるエア吹付け手段（１３，１６）と、エア
吹付け手段（１３，１６）の動作をコントロールする制
御手段（１４，１５）とを備え、印刷物の送り状況に応
じて印刷物（３０）に間欠的にエアを吹付ける構成にし
たことを特徴とする印刷エラー検出装置。Claim 1. A printing error detection device that receives reflected light from a moving printed matter with a sensor, converts the amount of reflected light into an amount of electricity, and uses this amount of electricity to detect printing errors on printed matter. air blowing means (13, 16) that blows air toward the printed matter (30) that is provided near the air blowing means (11) and being fed by the feeding means; 1. A printing error detection device comprising control means (14, 15) for controlling the printing error, and configured to intermittently blow air onto the printed material (30) depending on the feeding status of the printed material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3159891A JPH04358835A (en) | 1991-06-05 | 1991-06-05 | Printing error detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3159891A JPH04358835A (en) | 1991-06-05 | 1991-06-05 | Printing error detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04358835A true JPH04358835A (en) | 1992-12-11 |
Family
ID=15703438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3159891A Pending JPH04358835A (en) | 1991-06-05 | 1991-06-05 | Printing error detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04358835A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007077592A1 (en) * | 2005-12-28 | 2007-07-12 | Dac Engineering Co., Ltd. | Printed matter inspection device |
| WO2010095474A1 (en) * | 2009-02-19 | 2010-08-26 | 三菱重工業株式会社 | Perfecting press |
| DE102017208515A1 (en) * | 2017-05-19 | 2018-11-22 | Koenig & Bauer Ag | Method for operating a sheet-processing machine and sheet-processing machine |
-
1991
- 1991-06-05 JP JP3159891A patent/JPH04358835A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007077592A1 (en) * | 2005-12-28 | 2007-07-12 | Dac Engineering Co., Ltd. | Printed matter inspection device |
| WO2010095474A1 (en) * | 2009-02-19 | 2010-08-26 | 三菱重工業株式会社 | Perfecting press |
| DE102017208515A1 (en) * | 2017-05-19 | 2018-11-22 | Koenig & Bauer Ag | Method for operating a sheet-processing machine and sheet-processing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10987917B2 (en) | Machine arrangement with printing unit for the sequential processing of sheet-type substrates | |
| CN103561959B (en) | Printer and the method being used for adjusting band stress | |
| US5398925A (en) | Device for achieving a flat contact of stocks or printing materials | |
| US8166878B2 (en) | Liquid transfer apparatus | |
| US4384524A (en) | Arrangement for spreading sheets evenly on impression cylinder of printing presses | |
| US20040202794A1 (en) | Coating material applying method and coating material applying apparatus for applying a coating material to surfaces of prints, and a printing machine having the coating material applying apparatus | |
| US20180126725A1 (en) | Device for coding printing sheets in a sheet-fed press | |
| CN216783111U (en) | Ink-jet printing head protection system in digital printer | |
| CN109476152B (en) | Method for monitoring the width of a press strip formed between rotating bodies of a printing unit | |
| US20090283002A1 (en) | Method for printing correction | |
| EP2353863B1 (en) | Printing/coating method and apparatus | |
| JPH04358835A (en) | Printing error detecting apparatus | |
| US20030158825A1 (en) | Franking machine | |
| CN109228612B (en) | Manufacturing equipment of anti-counterfeiting traceability label | |
| CN207875173U (en) | A kind of digital label printer | |
| JP6531053B2 (en) | PRINTING APPARATUS, ITS CONTROL METHOD, AND PROGRAM | |
| KR20120065939A (en) | Printing apparatus and method of operating a printing device | |
| US5659178A (en) | Method and apparatus for the alignment of printing functions by optical beams reflected from sheets | |
| US5037080A (en) | Device for scanning the length of a sheet in a sheet processing machine, especially a sheet-fed rotary printing press | |
| US6802251B2 (en) | Dampening water feeding method for a printing machine, and the printing machine | |
| JP3935797B2 (en) | Sheet-fed printing press | |
| US6836635B2 (en) | Method and control device for preventing register errors | |
| JPH0399853A (en) | Method and apparatus for pushing printing paper | |
| US20220089398A1 (en) | Printing apparatus | |
| JP5838640B2 (en) | Sheet-fed printed matter inspection device |