EP1189754B1 - Procede et dispositif d'impression pour imprimer un materiau support et pour nettoyer un cylindre d'impression - Google Patents

Procede et dispositif d'impression pour imprimer un materiau support et pour nettoyer un cylindre d'impression Download PDF

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Publication number
EP1189754B1
EP1189754B1 EP00945844A EP00945844A EP1189754B1 EP 1189754 B1 EP1189754 B1 EP 1189754B1 EP 00945844 A EP00945844 A EP 00945844A EP 00945844 A EP00945844 A EP 00945844A EP 1189754 B1 EP1189754 B1 EP 1189754B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
printing
station
depressions
drum
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
EP00945844A
Other languages
German (de)
English (en)
Other versions
EP1189754A1 (fr
Inventor
Martin Berg
Manfred Wiedemer
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.)
Canon Production Printing Germany GmbH and Co KG
Original Assignee
Oce Printing Systems GmbH and Co KG
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 Oce Printing Systems GmbH and Co KG filed Critical Oce Printing Systems GmbH and Co KG
Publication of EP1189754A1 publication Critical patent/EP1189754A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/003—Web printing presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/10—Intaglio printing ; Gravure printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/003—Preparing for use and conserving printing surfaces of intaglio formes, e.g. application of a wear-resistant coating, such as chrome, on the already-engraved plate or cylinder; Preparing for reuse, e.g. removing of the Ballard shell; Correction of the engraving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/14—Cleaning characterised by the methods or devices using ultrasonic energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/22—Rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/27—Suction devices

Definitions

  • the invention relates to a method for printing a Carrier material, in which a printing roller with a Variety arranged on the surface of the printing roller Wells for receiving hydraulic fluid during a Printing process rotates about its longitudinal axis.
  • a printing roller with a Variety arranged on the surface of the printing roller Wells for receiving hydraulic fluid during a Printing process rotates about its longitudinal axis.
  • the inking station becomes hydraulic fluid during the printing process introduced in all the wells that are move past the coloring station.
  • Wells contained hydraulic fluid for Printing of the carrier material used.
  • the hydraulic fluid in the other part of the at the transfer location moving depressions remain in these depressions.
  • EP 0 756 544 B1 is a thermoelectric printing unit for transferring an ink known on a record carrier.
  • a printing roller with a variety of wells to hold ink there is an inking station, a transfer station and a cleaning station arranged.
  • During printing are only the inking station and the transfer printing station in operation. After the wells at the transfer station have been moved past, they arrive at the coloring station.
  • At the inking station is in the emptied wells hydraulic fluid introduced again. The cleaning station will not appear until printing is finished actuated.
  • a gravure printing unit is known from DE 295 07 416 U1, in which an intaglio printing cylinder ink-absorbing at image points Wells and in non-imaging areas has no recesses.
  • the wells are on one Coloring station filled with color. This color is on transfer a rubber cylinder to paper for later transfer. Then the paint residue from the wells the image points on the gravure cylinder using washed out with a jet of water and thus removed.
  • thermographic printing device known, with a glass cylinder on his Shell surface has a cup structure, the wells with Color to be filled. With the help of a cooling device the color solidified in the wells. In a pressure zone the color in selected cells depends on the The image structure to be printed is melted using laser light and transferred on paper. A squeegee grazes the remains of the paint from the surface of the ink cylinder off, whose cup is then filled again with paint become.
  • a pressure device suitable for carrying out the method can be specified.
  • the invention is based on the knowledge that a pressure high print quality can only be achieved if before transporting the wells past the coloring station all wells are completely empty and refilled with hydraulic fluid through the inking station become. This is particularly the case with printing processes from Meaning where the volume of a particular well the volume of that to be applied to a picture element Hydraulic fluid specifies. Even with wells, whose Printing fluid used in printing is not ensured that the entire hydraulic fluid on the Backing material can be applied. This is especially true then when the hydraulic fluid due to adhesive forces between hydraulic fluid and carrier material is sucked towards the carrier material. In this case on expelling the hydraulic fluid from the depression waived, for example with the help of a gas bubble is carried out.
  • a cleaning station in the method according to the invention used which hydraulic fluid itself wells moving past the cleaning station away.
  • the cleaning station and the coloring station operate simultaneously during printing.
  • the hydraulic fluid removed from all wells before the wells be used in a new printing process.
  • the volume of the wells remains in the method according to the invention throughout Printing process unchanged. It also prevents that hydraulic fluid over several revolutions of the Print roller is located in a recess and during is physically or chemically changed during this time, for example in viscosity or in composition, if volatile surfactants in the hydraulic fluid are included.
  • the cleaning station contains one parallel to the pressure roller horizontal cleaning roller, the surface of which is the surface the pressure roller during cleaning in a cleaning area touched.
  • the surface of the cleaning roller is made of an elastic or an absorbent material manufactured, which can be pressed into the recesses.
  • Using a cleaning roller is an easy way around hydraulic fluid remaining in the depressions to remove. With an elastic surface of the Cleaning roller, this can be done in an enlarged cleaning area press against the pressure roller. The in the The hydraulic fluid remaining in the depressions is therefore comparatively high more time to sit on the surface of the cleaning roller increase.
  • Cleaning rollers are also used, bristles are arranged on the surface thereof.
  • the cleaning device To prevent the printing unit from becoming dirty when brushing
  • the cleaning device must avoid splashing hydraulic fluid lie close to the pressure roller.
  • the cleaning roller leads a potential that differs from the potential of the surface of the Print roller differs. This measure will Releasing the pressure fluid from the recesses is easier, because in addition to the adhesive forces between Hydraulic fluid and surface of the cleaning roller electrostatic forces the hydraulic fluid out of the recess pull out. There are also potentials with different Sign used.
  • the cleaning station contains in addition to the cleaning roller parallel to the Cleaning roller lying scraper roller, its surface on the surface of the cleaning roller in a wiping area Exerts pressure.
  • the surface of the stripper roller is made of a hard material, e.g. made of metal. While absorbent material when expressed with the help of a Squeegee can be damaged is stripping the Hydraulic fluid from the scraper roller without damage possible.
  • the scraper roller has a smooth surface on that the squeegee fits well.
  • the emptied depressions cleaned with a cleaning liquid.
  • the cleaning leads to a more thorough emptying and cleaning of the Wells and ensures that in the coloring station Hydraulic fluid always under the same conditions is filled into the wells.
  • cleaning also removed dirt particles from the edges of the depressions, for example by abrasion of the carrier material or generated by abrasion on the edges of the depressions become.
  • the cleaning liquid is in a next embodiment contained in a cleaning container below the pressure roller is arranged.
  • Hydraulic fluid used so that additional cleaning fluids can be dispensed with. However, it happens on a very thorough cleaning, so as cleaning liquid Solvent used.
  • the cleaning liquid moved by additional measures beyond that Movement of the cleaning liquid by immersion go out of the platen.
  • Using ultrasound ensures that also sitting very firmly on the side walls Debris can be loosened. Also be Larger dirt particles are crushed by the ultrasound.
  • the cleaning station contains a blower with which Help air into the moving past the cleaning station Depressions is blown.
  • Help air When blowing the Air in the wells becomes the hydraulic fluid at the same time blown out.
  • the air is blown in there instead or in combination with cleaning by Cleaning roller performed.
  • the cleaning station a suction pump is used, with the help of air the depressions moved past the cleaning station is suctioned off. At the same time the air is also in the Remaining hydraulic fluid removed. At the Suction does not cause pressure fluid to splash away, so that measures against spraying hydraulic fluid don't have to be hit.
  • the pressure fluid cleaned at one point in the hydraulic fluid circuit and / or recycled.
  • the hydraulic fluid By filtering it is possible foreign bodies and already dried paint particles to remove from the hydraulic fluid.
  • Additives such as water or solvents in the hydraulic fluid brought in.
  • the invention also relates to a printing device which used to carry out the method according to the invention becomes.
  • a printing device which used to carry out the method according to the invention becomes.
  • FIG. 1 shows a longitudinal section along the surface 8 a pressure roller 10.
  • a matrix Wells of which two wells 12 in FIG. 1 and 14 are shown.
  • the wells are in one Row direction arranged side by side, cf. Arrow 16.
  • Adjacent depressions 12, 14 are at a distance from one another A, which determines the resolution of the printer.
  • In the direction of the column 18 are several rows of wells in a row arranged, also within a column adjacent depressions are spaced from each other, which corresponds to the distance A.
  • the wells are all constructed the same way, so that in the following only the structure of the Well 12 is explained.
  • the recess 12 is in the form of a truncated cone trained (see outline 20) and thus has a circular shape Cross-sections.
  • the axis of the truncated cone is in the direction the normal of the surface 8.
  • the frustoconical Outline 20 tapers with increasing distance from the Surface 8 of the pressure roller 10.
  • a bottom surface 24 of the Well 12 has a smaller diameter than that on the surface of the pressure roller 10 lying opening 26 of the Indentation 12.
  • the circumference of the opening 26 lies on a Circle and gives the shape of the picture elements to be printed in front.
  • a circumferential side wall 28 of the depression 12 is oblique arranged to the surface 8 of the pressure roller 10.
  • the ink 30 is caused by capillary forces within the recess 12 held. The capillary forces are greater than those on the Ink 30 has a gravitational pull so that the ink 30 also remains within the recess 12 when the opening 26 is directed downwards, i.e. to the center of the earth.
  • the Printing roller 10 with a doctor blade has the surface 32 of Ink 30 has a surface tension at which a convex Curvature occurs, i.e.
  • a contact angle RI has a value of has about 45 °.
  • the contact angle RI is from a vector V1 the surface tension on the surface 30 and from the Sidewall 28 included.
  • Vector V1 starts on Edge of the recess 12, i.e. at a point where the Liquid 30 on the side wall 28 or surface 8 borders.
  • the volume of the recess 12 is selected so that the exact amount of ink 30 is included may be required to print a single pixel is.
  • the starting point of the Surface tension vector VII lies on the border between Hydraulic fluid 34 and the side wall of the recess 14.
  • a central region 38 of the surface 36 protrudes over the surface 8 of the printing roller 10 by a distance B out.
  • the adhesive forces between paper and printing fluid 34 greater than the capillary forces between hydraulic fluid 34 and depression 14. Therefore, all of the hydraulic fluid 34 sucked out of the recess 14 and colors one Area on paper that is designated for a pixel is.
  • Figure 2 shows a printing unit 50 of a printer, the one 600 dpi (dots per inch) resolution.
  • a pressure roller 10a rotates counterclockwise, cf. arrow 52.
  • the wells of a line filled with ink 56 are then transported by the rotation of the printing roller 10a to a position P4, at which an exposure device 70 changes the surface tension in selected wells.
  • the exposure device 70 contains a tubular flash lamp 72, the longitudinal axis of which is arranged parallel to the longitudinal axis of the printing roller 10a.
  • the flash lamp 72 is located approximately at the focal point of the reflector 74.
  • the exposure device 70 also contains a row of ceramic cells 76 arranged next to one another, the transparency of which can be changed with the aid of a control voltage.
  • the ceramic cells 76 are transparent, ferroelectric ceramic plates. Such ceramic plates are known from optoelectronics. For example, such ceramic plates are described in the European Patent EP 0 253 300 B1 as PLZT elements. However, optoelectronic elements that work according to the Kerr principle are also used.
  • the exposure device 70 is controlled by a control device 78 as a function of print data 80, which determine the picture elements of the print image to be printed.
  • a clock signal 84 is generated on a first output line 82 of the control device 78 and clocks the flash lamp 72 synchronously with the rotation of the printing roller 10a, so that each line of depressions which is moved past the position P4 is irradiated exactly once by the flash lamp 72.
  • Output lines 86 lead from the control device 78 to individual ceramic cells 76 of the row of ceramic cells 76.
  • the control unit 78 controls the ceramic cells 76 in this way indicates that a ceramic cell 76 under consideration is translucent if the one opposite the ceramic cell 76 in question Ink well that contains the next pass used at a position P5 for printing shall be.
  • the light coming from the flash lamp 72 can then pass through the relevant ceramic cell 76 get on the ink.
  • the light energy turns tensides evaporates, which are on the surface of the ink. The result is that the surface tension of the Ink rises and the contact angle increases.
  • At position P5 is between the platen 10a and a transport roller 90 a transfer zone 92. Die The longitudinal axis of the transport roller 90 lies parallel to the axis the pressure roller 10a. By a transport device, not shown becomes the transport roller 90 in the opposite direction Transport roller 10a rotated, cf. Arrow 94. Between pressure roller 10a and transport roll 90 becomes continuous paper 96 in a transport direction 98 transported. The continuous paper 96 lies on the surface of the transport roller 90.
  • continuous paper 96 and the surface of the platen 10a is the same speed, so that they rest relative to each other.
  • the pressure roller 10a facing surface of the continuous paper 96 in the transfer printing zone 92 a distance from the surface of the Printing roller 10a, which is smaller than the distance B, cf.
  • Figure 1 The continuous paper is in the area of the transfer printing zone 96 printed in places opposite the recesses, whose ink has a large surface tension and therefore the surface has a large curvature, condition II.
  • the cleaning station 100 contains a cleaning roller 102, the longitudinal axis of which is parallel to the longitudinal axis of the pressure roller 10a.
  • the cleaning roller 102 rotates in the opposite direction to the pressure roller 10a, cf. Arrow 104. Touch at position P6 the surface of the cleaning roller 102 and the surface the pressure roller 10a in a cleaning area 105.
  • the surface of the cleaning roller 102 is made of an absorbent Material made, the ink 56 from the wells sucks, in which there is still ink.
  • Figure 3 shows a cleaning device 100b, which in a Printing unit 50b is used.
  • One in the printing unit 50b used exposure device and a transfer printing station are not shown in Figure 3 for guiding the carrier material shown, since their structure with the structure of the exposure device 70 or with the construction of the transfer station 90 to 98 is identical.
  • a printing roller 10b of the printing unit 50b has the same structure as the pressure roller 10a and rotates in the direction of an arrow 52b against Clockwise.
  • the cleaning station 100b is located on the platen roller 10b at about the same position as the cleaning station 100 with respect to the printing roller 10a, i.e. obliquely below the axis of the pressure roller 10b.
  • a cleaning roller contained in the cleaning station 100b 102b is arranged parallel to the printing roller 10b.
  • the surface the cleaning roller 102b is replaced by an elastic one Coating 200 formed.
  • the surface of the coating 200 touches the platen roller 10b along a cleaning area 202.
  • the cleaning roller 102b rotates in the same direction to the pressure roller 10b, cf. Arrow 204.
  • a stripper roller 206 On the side of the Cleaning roller 102b is parallel to the cleaning roller 102b a stripper roller 206.
  • the stripper roller 206 rotates in the opposite direction to the cleaning roller 102b, cf. Arrow 208.
  • a squeegee 210 Located below the stripper roller 206 a squeegee 210 whose downward Lower edge arranged above a collecting basin 108b is.
  • the cleaning roller 102b is removed in the recesses of FIG Print roller 10b ink remaining from the wells.
  • the Removed ink is removed by the rotation of the cleaning roller 102b transported to the stripping roller 206 and reaches the stripping roller at a stripping area 212 206.
  • the stripped ink is then passed through the stripper roller 206 transported to squeegee 210.
  • the doctor blade 210 grazes the Ink from the stripper roller 206. From the squeegee 210 the ink drips into the catch basin 108.
  • the catch basin 108b is connected to a Reservoir 62b connected to a coloring station 54b.
  • the compensation line 110b runs through a filter unit 213, which contains a fine porous filter, in which paper fibers and dried ink collect. at Another embodiment is in the filter unit a catalyst substance used, the foreign body decomposed in the ink.
  • the ultrasonic bath 214 contains a container 216, the upper edges of which are on the pressure roller 10b.
  • the container 216 is completely with a cleaning liquid 218 containing solvent filled.
  • An ultrasonic transmitter 220 in the bottom area of the container 216 sends ultrasonic waves through the cleaning liquid 218 through to the surface of the platen 10b. Indentations of the pressure roller 10b move on the U1 ultrasound bath 214 over, the wells are immersed in the cleaning liquid 218 and are with the cleaning liquid 218 filled.
  • the cleaning liquid 218 forms a transmission medium for the ultrasound, see that the ultrasound to the side walls of the wells arrives and loosens foreign bodies adhering there. leaving the depressions the ultrasonic bath 214, so the cleaning liquid runs due to gravity and remains in container 216.
  • the emptied at the cleaning station 100b and in the ultrasonic bath 214 cleaned wells are due to the Rotary movement of the printing roller 10b to the inking station 54b transported.
  • the coloring station 54b contains one Scoop roller 58b, which is arranged parallel to the pressure roller 10b and is in the opposite direction to the direction of rotation the pressure roller 10b rotates, cf. Arrow 60b.
  • the Scoop roller 58b is immersed in ink 56b, which is in the reservoir 62b is located. By the rotating movement of the scoop roller 58b, ink becomes reservoir 62b Print roller 10b transported. In a coloring area 222 will move past the coloring station 62b Wells filled with 56b ink.
  • the squeegee then serves to remove ink from the squeegee Print roller 10b, which is not within Wells. In addition, by using the squeegee reaches the printing fluid in the wells is arched inwards.
  • Figure 4 shows an enlarged view of the cleaning area 202. depressions 230 to 242 in the surface the pressure roller 10b are shown exaggeratedly large in FIG. In the wells 232, 236, 240 and 242 respectively after transporting past the transfer location 92, see.
  • Figure 2 still hydraulic fluid 252, 256, 260 and 262.
  • the cover 200 is made of an elastic material and presses into the depressions in the cleaning area 202 a, cf. Indentation 236. Due to the adhesive force between Hydraulic fluid 256 and coating 200 becomes the hydraulic fluid 256 pulled out of the recess 236.
  • the Hydraulic fluid 260 or 262, which is in the recess 240 or 242 was already in the cleaning area 202 transferred to the coating 200.
  • Figure 5 shows a section of a cleaning station 100c, which is essentially like the cleaning station 100b is constructed. Instead of the cleaning roller 102b in the cleaning station 100c uses a cleaning roller 102c, which also has an elastic surface 200c coating. At a cleaning area 202c are the cleaning roller 102c and a pressure roller 10c opposite, both made of a metallic material are made. There is a potential on the printing roller 10c generated with the aid of a voltage U1. A voltage U2 is generated a potential on the surface of the cleaning roller 102c, that is smaller than the potential on the surface the platen 10c.
  • the potential difference leads to the fact that hydraulic fluid 252c, 256c, 260c and 262c easily detaches from recesses 232c, 236c, 240c or 242 c, when the platen roller 10c and the cleaning roller 102c turn in opposite directions to each other, cf. Arrows 52c and 204c.
  • one of the voltages U1 or U2 reversed, so that the potential on the Printing roller 10c a sign other than the potential on the cleaning roller 102c.
  • FIG 6 shows a cleaning station 100d, which instead the cleaning station 100 is used.
  • a pressure roller 10d turns counterclockwise, cf. arrow 52d.
  • a blower unit 260 is below the axis of FIG Printing roller 10d arranged.
  • An outlet nozzle 262 is along the longitudinal direction of the pressure roller 10d on the surface the pressure roller 10d directed.
  • the blower unit 216 generates a pressure p that is greater than atmospheric pressure is patm. This has the result that through the outlet nozzle 262nd Air in the indentations on the surface of the platen 10d is blown.
  • the air flow presses in the depressions remaining hydraulic fluid out into a catch basin 108d.
  • the cleaning station 100d is from one Surround not shown housing, which prevents Pressure fluid sprayed out of the cleaning device 100d.
  • FIG. 7 shows a cleaning station 100e, which instead the cleaning station 100 is used.
  • a pressure roller 10e turns counterclockwise, cf. arrow 52e.
  • the cleaning station 100e contains a suction unit 270 arranged below the axis of the pressure roller 10e is.
  • a suction nozzle 272 of the suction unit 270 is aligned that there is an intake opening along the longitudinal direction of the printing roller 10e extends and which on the Cleaning station 100e moving recesses in opposite to each other.
  • a pressure p which is lower, prevails in the suction unit 270 than the atmospheric pressure is patm.
  • air gets through the suction nozzle 272 is sucked into the suction unit 270.
  • the printing roller 10e also becomes printing fluid aspirated, which in the wells after the Transport past the transfer point 92 has remained.
  • An outlet channel 274 of the suction unit 270 opens into a collecting basin 108e. Through the drain channel 274 passes from the Surface of the pressure roller 10e sucked hydraulic fluid from inside the suction unit 270 into the collecting basin 108e.
  • a connection between the collecting basin 108e and the storage container 62 is not shown in FIG. 7.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)

Claims (17)

  1. Procédé d'impression d'un matériau de support (96), dans lequel
       un tambour d'impression (20a), comportant un grand nombre d'évidements (12, 14) agencés sur la surface du tambour d'impression (10a) et destinés à recevoir du liquide d'impression (30, 34), tourne autour de son axe longitudinal pendant un processus d'impression,
       du liquide d'impression (30, 34) est introduit par une station de coloration (54) dans des évidements (12, 14) passant par la station de coloration (54),
       au niveau d'une station de reproduction (92), du liquide d'impression (34), provenant d'une partie des évidements (14) passant par la station de reproduction (92), est utilisé pour imprimer le matériau d'impression (96), et du liquide d'impression (30) reste dans l'autre partie des évidements (12),
       du liquide d'impression (30) est éliminé par une station de nettoyage (100) des évidements (12, 14) passant par la station de nettoyage (100),
    caractérisé en ce que la station de nettoyage (100) et la station de coloration (54) sont entraínées simultanément pendant le processus d'impression.
  2. Procédé selon la revendication 1, caractérisé en ce que la station de nettoyage (100) contient un tambour de nettoyage (102), parallèle au tambour d'impression (10a), dont la surface repose sur la surface du tambour d'impression (10a) pendant le nettoyage dans une zone de nettoyage (202), et en ce que la surface du rouleau de nettoyage (102) est fabriquée à partir d'un matériau élastique ou absorbant.
  3. Procédé selon la revendication 2, caractérisé en ce que le rouleau de nettoyage (102a) est à un potentiel (U2) qui est différent d'un potentiel (U1) à la surface du tambour d'impression (10a).
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que la station de nettoyage (100b) contient un rouleau racleur (206), parallèle au rouleau de nettoyage (102b), dont la surface exerce une pression sur la surface du rouleau de nettoyage (102b) dans une zone de raclage (212), et en ce que la surface du rouleau racleur (102) est fabriquée à partir d'un matériau dur (200).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les évidements vides sont nettoyés avec un liquide de nettoyage (216) après avoir éliminé le liquide d'impression des évidements passant par la station de nettoyage (100b), et avant d'introduire le liquide d'impression dans des évidements passant par la station de coloration (54b).
  6. Procédé selon la revendication 5, caractérisé en ce que la station de nettoyage (214) contient un récipient de nettoyage (216) agencé de préférence sous le tambour d'impression (10b) et comportant un liquide de nettoyage (218), et en ce que des évidements passant par le récipient de nettoyage (216) plongent dans le liquide de nettoyage (218).
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce qu'on utilise du liquide d'impression comme liquide de nettoyage.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que le liquide de nettoyage (216) est déplacé par des moyens supplémentaires, de préférence par émission d'ultrasons (220).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la station de nettoyage (100d) contient une unité soufflante (260) qui chasse avec de l'air le liquide d'impression des évidements (12, 14) passant par la station de nettoyage (100d).
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que la station de nettoyage (100e) contient une unité d'aspiration (270) aspirant de l'air qui chasse le liquide d'impression des évidements (12, 14) passant par la station de nettoyage (100e).
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que le liquide d'impression éliminé par la station de nettoyage (100) est collecté, et en ce que le liquide d'impression collecté est amené à la station de coloration (54).
  12. Procédé selon la revendication 11, caractérisé en ce que le liquide d'impression (56) est nettoyé et/ou retraité.
  13. Dispositif d'impression (50) destiné à imprimer un matériau de support (96), comportant
    un tambour d'impression (10a), tournant autour de son axe longitudinal, à la surface duquel sont agencés un grand nombre d'évidements (12, 14) destinés à recevoir du liquide d'impression (30, 34),
    une station de coloration (54) destinée à introduire du liquide d'impression (30, 34) dans des évidements (12, 14) qui passent par la station de coloration (54),
    une station de reproduction (94) au niveau de laquelle du liquide d'impression (34), provenant d'une partie des évidements passant par la station de reproduction (94), est utilisé pour imprimer le matériau d'impression (96), et au niveau de laquelle du liquide d'impression (30) reste dans l'autre partie des évidements (12) passant par la station de reproduction (94),
    une station de nettoyage (100) destinée à éliminer du liquide d'impression (30) des évidements (12) qui passent par la station de nettoyage (100),
    et une unité de commande destinée à commander la station de nettoyage (100) et la station de coloration (54), caractérisé en ce que l'unité de commande met en fonctionnement simultanément la station de nettoyage (100) et la station de coloration (54) pendant le processus d'impression.
  14. Dispositif d'impression (50) selon la revendication 13, caractérisé par une station de nettoyage (214) destinée à nettoyer les évidements vidés dans la station de nettoyage (100b) et contenant du liquide nettoyage (216).
  15. Dispositif d'impression (50) selon la revendication 13 ou 14, caractérisé en ce que la station de nettoyage (100) contient un rouleau de nettoyage (102, 102a), parallèle au rouleau d'impression (10a, 10b, 10c), dont la surface repose sur la surface du rouleau d'impression (10a) dans une zone de nettoyage (202),
       et en ce que la surface du rouleau de nettoyage (102a) est de préférence à un autre potentiel (U2) que la surface du rouleau d'impression (10c).
  16. Dispositif d'impression (50) selon la revendication 15, caractérisé en ce que la station de nettoyage (100b) contient un rouleau racleur (206), parallèle au rouleau de nettoyage (102b), dont la surface exerce une pression sur la surface du rouleau de nettoyage (102b) dans une zone de raclage (212).
  17. Dispositif d'impression (50) selon l'une des revendications 13 à 16, caractérisé en ce que le dispositif de nettoyage (100d) contient une unité soufflante (260) permettant de souffler de l'air dans les évidements (12, 14) passant par la station de nettoyage (100d), et/ou en ce que la station de nettoyage (100e) contient une unité d'aspiration (270) permettant d'aspirer l'air dans les évidements (12, 14) passant par la station de nettoyage (100e).
EP00945844A 1999-06-30 2000-06-28 Procede et dispositif d'impression pour imprimer un materiau support et pour nettoyer un cylindre d'impression Expired - Lifetime EP1189754B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19930129 1999-06-30
DE19930129 1999-06-30
PCT/EP2000/006026 WO2001002170A1 (fr) 1999-06-30 2000-06-28 Procede et dispositif d'impression pour imprimer un materiau support et pour nettoyer un cylindre d'impression

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EP1189754A1 EP1189754A1 (fr) 2002-03-27
EP1189754B1 true EP1189754B1 (fr) 2003-02-12

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US (1) US6907826B1 (fr)
EP (1) EP1189754B1 (fr)
JP (1) JP2003503245A (fr)
DE (1) DE50001245D1 (fr)
WO (1) WO2001002170A1 (fr)

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DE10107647A1 (de) 2001-02-19 2002-09-19 Oce Printing Systems Gmbh Vorrichtung und Verfahren zum Ersatz von gealtertem Entwickler
US7257354B2 (en) 2001-02-19 2007-08-14 Oce Printing Systems Gmbh Device and method for the replacement of out-of-date developer
DE10206942A1 (de) 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei zum Strukturieren gesteuerte Strahlungsventile verwendet werden
DE10206936A1 (de) 2002-02-19 2003-09-11 Oce Printing Systems Gmbh Digitales Druckverfahren und Druckeinrichtung mit einem näpfchenförmigen Druckträger
DE102007026883A1 (de) 2007-06-11 2008-12-24 Aurentum Innovationstechnologien Gmbh Druckmaschine und Druckverfahren hierfür
JP5794466B2 (ja) * 2011-04-13 2015-10-14 株式会社リコー 処理液付与装置及び画像形成装置
CN102886970A (zh) * 2012-10-10 2013-01-23 深圳市凯力诚实业发展有限公司 高速印刷装置、方法及生产线
JP5910606B2 (ja) * 2013-10-22 2016-04-27 株式会社村田製作所 グラビア印刷版およびその製造方法、グラビア印刷機、ならびに積層セラミック電子部品の製造方法
WO2020032929A1 (fr) 2018-08-07 2020-02-13 Hewlett-Packard Development Company, L.P. Détermination de l'épaisseur d'un fluide de nettoyage
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DE50001245D1 (de) 2003-03-20
WO2001002170A1 (fr) 2001-01-11
EP1189754A1 (fr) 2002-03-27
JP2003503245A (ja) 2003-01-28
US6907826B1 (en) 2005-06-21

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