CN103732408A - Offset imaging system - Google Patents

Offset imaging system Download PDF

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Publication number
CN103732408A
CN103732408A CN201280038498.XA CN201280038498A CN103732408A CN 103732408 A CN103732408 A CN 103732408A CN 201280038498 A CN201280038498 A CN 201280038498A CN 103732408 A CN103732408 A CN 103732408A
Authority
CN
China
Prior art keywords
image
generating unit
imaging
offset media
offset
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
Application number
CN201280038498.XA
Other languages
Chinese (zh)
Inventor
M·纳卡什
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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
Priority claimed from US13/205,726 external-priority patent/US20130036929A1/en
Priority claimed from US13/205,718 external-priority patent/US20130036925A1/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of CN103732408A publication Critical patent/CN103732408A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1083—Mechanical aspects of off-press plate preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
    • B41C1/1033—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials by laser or spark ablation

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

An imaging apparatus (10) forming an image on an offset media (100) includes: a carriage (220), which moves relative to the offset media wherein the offset media includes a top and bottom layer; a first imaging unit (208) mounted on the carriage and configured to image at high intensity the non-image areas of the offset media; a second imaging unit (212) mounted on the carriage and configured to image at lower intensity than the first imaging unit wherein the second imaging unit is configured to image the image of the offset media; a data feeder (232) configured to supply non-image data to the first imaging unit and image data to the second imaging unit; and a controller (216) configured to provide imaging data to the data feeder. Image areas on top layer are fixated by the second imaging unit. Non-image areas are ablated from the top layer by the first imaging unit.

Description

Offset printing imaging system
Technical field
The present invention relates to a kind of imaging system for CTP (CTP) print system, and relate more specifically to a kind for the treatment of system of exempting from that comprises the special-purpose imaging head of being combined with flexographic printing plates.
Background technology
The known method that great majority are manufactured flexographic printing plates need to be used chemicals to dissolve the non-image areas of plate.Also can use the additive method of for example prewashing, preheating, gluing and post-drying.High and the not too environmental protection of these method costs.
Common plate is divided into two kinds, and negative plate and positive plate complete in the exposure of negative plate place the coating making in image stronger in image-region, and the exposure for laser in positive plate completes in the non-image areas being weakened by energy.
Conventionally, in negative plate, because chemical crosslinking has realized stronger and more stable image, and by developer dissolves the weak non-image areas of flushing.In positive plate, the common less stable of image, but after exposure, non-image change is weak and can optionally be dissolved and be removed by developer.After the exposure of aluminium base background, positive plate and negative plate are all gummed.
Summary of the invention
In brief, according to an aspect of the present invention, a kind ofly for form the imaging device of image in offset media, comprise the travelling carriage moving with respect to offset media.Offset media further comprises top layer and bottom.The first imaging head is arranged on travelling carriage, for by utilizing high-density power imaging non-image areas on the surface of offset media.The second imaging is arranged on travelling carriage, low density density image region on the surface of offset media of using for compare the first image-generating unit by utilization.
Data feeder line provides non-picture data to the first image-generating unit, and view data is provided to the second image-generating unit.Controller provides imaging data to data feeder line.Image-region on top layer is fixed by the second image-generating unit, and non-image areas by the first image-generating unit from top layer ablation.
Read in conjunction with the drawings specific descriptions below, these and other objects of the present invention, feature and advantage will become obviously for those skilled in the art, wherein demonstration and described illustrative embodiment of the present invention in accompanying drawing and specific descriptions.
Accompanying drawing explanation
Fig. 1 is the diagrammatic representation of the plate that is comprised of hydrophilic layer and hydrophobic layer;
Fig. 2 is the diagrammatic representation of plate imaging device; And
Fig. 3 is the diagrammatic representation that is arranged on the printing sleeve on printing cylinder.
The specific embodiment
In specific descriptions below, many specific detail have been proposed for complete understanding of the present disclosure.But, it will be understood by those skilled in the art that in the situation that not thering are these specific detail and also can realize teaching of the present disclosure.In other examples, do not specifically describe known method, process, assembly and circuit, in order to avoid make teaching indigestion of the present disclosure.
Although description of the invention is relevant with in embodiment one, is to be understood that it is not intended to limit the invention to this embodiment.On the contrary, it is intended to cover replacement, modification and the equivalents as claims covered.
As shown in Figure 2, plate imaging system 10 provides the processing scheme of exempting from for the manufacture of flexographic printing plates or hectographic printing sleeve.System comprises two primary clusterings.As shown in Figure 1, the first assembly is offset plates 100.Offset plates 100 or negative plate or positive plate.Offset plates 100 is configured to by laser mode, expose on whole offset plates 100 surfaces.
Offset plates 100 is based on double-layer structure, the hydrophilic layer 108 of bottom and the hydrophobic layer 104 at top.Hydrophilic layer allows to cancel gluing step.Two- layer 104 and 108 are placed on supporting layer 112.Equally, according to the present invention, can use the printing sleeve 304(Fig. 3 with the hydrophilic layer 108 of bottom and the hydrophobic layer 104 at top).Fig. 3 has shown and is arranged on the continuous sleeve 304 on cylinder 312 and is arranged on some sleeve parts that separate 308 on cylinder.
Fig. 2 has shown imaging device 200.Imaging device 200 comprises imaging travelling carriage 220, and laser imaging unit 208 and laser imaging unit 212 are installed on imaging travelling carriage 220.Image-generating unit 208 is set to application higher than the radiation of the intensity of image-generating unit 212.Laser imaging unit 208 and 212 is configured to imaging in offset plates 100, and offset plates 100 is arranged on going barrel 204.Travelling carriage 220 is applicable to guide by the screw 224 that advances and is arranged essentially parallel to drum 204 and moves.
Offset plates 100 is by laser imaging unit 208 and 212 exposures.Laser imaging unit 208 is configured to ablation hydrophobic layer 104.The ablating part of hydrophobic layer 104 is illustrated in the non-image areas in offset plates 100.Non-image areas is by being provided view data 236 expressions to laser imaging unit 208 by data feeder line 232.Data feeder line 232 receives the imaging data 228 of self-controller 216, and non-picture data 236 is sent to image-generating unit 208, and view data 240 is sent to image-generating unit 212.By the laser imaging unit 208 with high power operation, realize the ablation of hydrophobic layer 104.Laser imaging unit 208 is set to high power operation.By image-generating unit 208, be applied to the power ablation hydrophobic layer 104 of the increase in non-image areas.Image-generating unit 212 is view data 240 imagings, and image-generating unit 212 is set to operate with the power level lower than image-generating unit 208.The power of the minimizing applying by image-generating unit 212 is by by cross-linked coating and by produce the bonding strengthening of carrying out image between flaggy 104 and 108.
The non-imaging moiety of plate is by utilizing the image-generating unit 208 of higher laser power to carry out imaging, and imaging moiety carries out imaging by more low intensive image-generating unit 212.Non-picture data 236 provides to image-generating unit 208, and view data 240 provides to image-generating unit 212 by data feeder line 232.This conception of species all provides benefit for negative plate and positive plate technology.Except the stability of negative plate, clean background will be realized in positive plate.
By the single path of each laser cell 208 and 212 co-operate therein, can carry out the imaging of plate 100.Alternately, imaging can be carried out in two paths, in the first path, processes non-picture data, and in path subsequently, by 212 pairs of view data of image-generating unit, carry out imaging by laser cell 208.The order of imaging can also be started by the image-generating unit 212 with data 240, next for having the additional path of the image-generating unit 208 of data 236.
Due to what carry out in fact onboard, be heat treatment, therefore by local temperature, determine type and the speed of reaction onboard.The point place removing at needs layer, laser head can transmit the high power laser light hot spot of ablation hydrophobic layer onboard.At some place that should fixed head active layer, laser head provide cause fixation reaction compared with low energy level.
In a word, the difference of this system and known CTP system is, according to imaging data 228, it is partly by layer 104 the ablation (by utilizing higher laser power image-generating unit 208) of the level for layer 108 and each part of partly carrying out exposed plate by fixing (by the lower laser power image-generating unit 212 of utilization) of layer 104.
List of parts
10 plate imaging systems
100 offset plates (medium)
104 hydrophobic layers
108 hydrophilic layers
112 supporting layers
200 imaging devices
204 drums
208 laser imaging unit
212 laser imaging unit
216 controllers
220 travelling carriages
224 screws
228 imaging datas
232 data feeder lines
236 non-picture datas for laser imaging unit 208
240 view data for laser imaging unit 212
304 printing sleeves
308 sleeve parts
312 cylinders

Claims (18)

1. for form an imaging device for image in offset media, comprising:
Travelling carriage, described travelling carriage moves with respect to described offset media, and wherein said offset media further comprises top layer and bottom;
The first image-generating unit, described the first image-generating unit is arranged on described travelling carriage, and is configured to the non-image areas with offset media described in high strength imaging;
The second image-generating unit, described the second image-generating unit is arranged on described travelling carriage, is configured to the intensity imaging lower than described the first image-generating unit, and wherein said the second image-generating unit is configured to the image-region of offset media described in imaging;
Data feeder line, described data feed configuration is for non-picture data being provided to described the first image-generating unit, and view data is provided to described the second image-generating unit;
Controller, described controller is configured to imaging data to provide to described data feeder line;
Wherein, the image-region on top layer is fixed by described the second image-generating unit; And
Wherein, non-image areas by described the first image-generating unit from described top layer ablation.
2. equipment according to claim 1, wherein said offset media is sleeve.
3. equipment according to claim 1, wherein stating offset media is offset plates.
4. equipment according to claim 1, wherein said offset media is arranged on cylindrical drum.
5. equipment according to claim 1, wherein power level regulates by pulsewidth modulation.
6. equipment according to claim 1, wherein power level regulated by the pulse duration.
7. equipment according to claim 1, wherein power level regulates by changing the wavelength of the radiation being produced by imaging head.
8. equipment according to claim 1, wherein said offset media comprises:
Hydrophobic layer; And
Hydrophilic layer.
9. equipment according to claim 8, wherein non-imaging ablated area is hydrophilic layer.
10. equipment according to claim 1, wherein said the first image-generating unit and described the second image-generating unit carry out imaging at same paths place to described offset media.
11. equipment according to claim 1, wherein, described the first image-generating unit is in offset media described in first path place's imaging, and described the second image-generating unit is in offset media described in second path place's imaging.
12. equipment according to claim 1, wherein, described the second image-generating unit is in offset media described in first path place's imaging, and described the first image-generating unit is in offset media described in second path place's imaging.
13. 1 kinds for writing image the surperficial method of offset media, comprising:
Described offset media is arranged on imaging drum;
Utilize the imaging in the first on described surface of the first image-generating unit, wherein said the first image-generating unit is set to operate with first described in ablation with energy-rich radiation, and wherein said first represents non-picture data; And
Utilize the second portion on surface described in the second image-generating unit imaging, wherein said the second image-generating unit is set to low-energy radiation operation so that view data is fixed on described second portion.
14. methods according to claim 13, wherein said offset media is plate.
15. methods according to claim 13, wherein said offset media is sleeve.
16. methods according to claim 13, wherein said the first image-generating unit and described the second image-generating unit offset media described in imaging in same paths.
17. methods according to claim 13, wherein, described the first image-generating unit is in offset media described in first path place's imaging, and described the second image-generating unit is in offset media described in second path place's imaging.
18. methods according to claim 13, wherein, described the second image-generating unit is in offset media described in first path place's imaging, and described the first image-generating unit is in offset media described in second path place's imaging.
CN201280038498.XA 2011-08-09 2012-07-18 Offset imaging system Pending CN103732408A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US13/205,726 2011-08-09
US13/205,726 US20130036929A1 (en) 2011-08-09 2011-08-09 Method for offset media system
US13/205,718 2011-08-09
US13/205,718 US20130036925A1 (en) 2011-08-09 2011-08-09 Offset imaging system
PCT/US2012/047098 WO2013022571A1 (en) 2011-08-09 2012-07-18 Offset imaging system

Publications (1)

Publication Number Publication Date
CN103732408A true CN103732408A (en) 2014-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280038498.XA Pending CN103732408A (en) 2011-08-09 2012-07-18 Offset imaging system

Country Status (3)

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EP (1) EP2741914A1 (en)
CN (1) CN103732408A (en)
WO (1) WO2013022571A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113165377A (en) * 2018-12-13 2021-07-23 伊斯曼柯达公司 Low volume flexographic and gravure inking systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489308A (en) * 1974-03-18 1977-10-19 Scott Paper Co Laser imagable dry planographic printing plate blank
US20080153038A1 (en) * 2006-12-22 2008-06-26 Alon Siman-Tov Hybrid optical head for direct engraving of flexographic printing plates

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5654125A (en) * 1995-05-01 1997-08-05 E. I. Du Pont De Nemours And Company Laser apparatus and process of use
US6367381B1 (en) * 2000-02-22 2002-04-09 Polyfibron Technologies, Inc. Laser imaged printing plates comprising a multi-layer slip film
DE10028790A1 (en) * 2000-06-15 2001-12-20 Heidelberg Instruments Mikrotechnik Gmbh Laser lithographic manufacture of circuit board by direct marking by exposing photoresist at different wavelength than that used to expose latent mask
US6832552B2 (en) * 2001-06-26 2004-12-21 Creo Inc. Method of automated setting of imaging and processing parameters
US8389203B2 (en) * 2007-05-08 2013-03-05 Esko-Graphics Imaging Gmbh Exposing printing plates using light emitting diodes
US8153347B2 (en) * 2008-12-04 2012-04-10 Eastman Kodak Company Flexographic element and method of imaging
US20110014573A1 (en) * 2009-07-14 2011-01-20 Eynat Matzner System for engraving flexographic plates
EP2275870A1 (en) * 2009-07-14 2011-01-19 Flint Group Germany GmbH Method of manufacturing cylinder-shaped flexographic plates using digital images

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489308A (en) * 1974-03-18 1977-10-19 Scott Paper Co Laser imagable dry planographic printing plate blank
US20080153038A1 (en) * 2006-12-22 2008-06-26 Alon Siman-Tov Hybrid optical head for direct engraving of flexographic printing plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113165377A (en) * 2018-12-13 2021-07-23 伊斯曼柯达公司 Low volume flexographic and gravure inking systems
CN113165377B (en) * 2018-12-13 2022-07-08 伊斯曼柯达公司 Low volume flexographic and gravure inking systems

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Publication number Publication date
EP2741914A1 (en) 2014-06-18
WO2013022571A1 (en) 2013-02-14

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Application publication date: 20140416