CN102189855B - Printing pressure roller and printing unit with same - Google Patents
Printing pressure roller and printing unit with same Download PDFInfo
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- CN102189855B CN102189855B CN201010129150.4A CN201010129150A CN102189855B CN 102189855 B CN102189855 B CN 102189855B CN 201010129150 A CN201010129150 A CN 201010129150A CN 102189855 B CN102189855 B CN 102189855B
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Abstract
The invention relates to a printing pressure roller (1). The printing pressure roller comprises a metal shaft core (11) and a flexible roller (12) which is in interference fit with the periphery of the metal shaft core and is made of flexible materials, and is characterized in that: the peripheral surface of the flexible roller (12) is an arc-shaped surface of which the two ends is gradually sunk inwards towards the middle part along the length direction. Therefore, deformation amount generated at the two ends of the surface of the flexible roller is slightly greater than deformation amount generated on the middle part of the surface of the flexible roller; and according to an elastic deformation principle of a rubber material, extension tendency is generated at the two ends of printing paper extruded by the flexible roller through the extrusion deformation of the flexible roller, so that the printing paper cannot be wrinkled in the coining process. The invention also relates to a printing unit with the printing pressure roller. The printing unit comprises a frame (2), a printing roller unit (3) and an extrusion roller (4), wherein the printing pressure roller is positioned outside the printing roller unit and can rotate around the axial line of the printing pressure roller; and a pre-tightening structure which makes the flexible roller of the printing pressure roller keep extrusion tendency to the extrusion roller is arranged in the frame.
Description
Technical field
The present invention relates to a kind of squeegee pressure roller and have the printing element of this pressure roll, this squeegee pressure roller and printing element are for various mimeographs, as duplicating machine.
Background technology
In industrial and mining enterprises, office and the school of China, adopt widely duplicating machine (claiming again mimeograph), as the literary composition seal instrument of office use.The basic functional principle of this duplicating machine is printing, praise on the paraffin paper of writing or mimeographing, being coated with uniform ink, by the roll extrusion of a rubber roll, by the word graph line of printing on paraffin paper, duplicates on paper.
Duplicating machine is more ripe a kind of apparatus.The mimeograph that the Chinese utility model patent < < Simple compact mimeograph > > that is ZL92233225.8 (notification number is CN2188027Y) as a patent No. has disclosed.And for example a patent No. is the duplicating machine of the mono-roller duplicating machine of the Chinese utility model patent < < > > disclosure of ZL93204433.6 (notification number is CN2151002Y).
Process and the principle of the whole printing of existing integrated duplicating machine are basic identical, and first, lifting platform is sent printing sheets into the first paper feed unit, and the effect by paper-sheets rolling wheel and layman is sent to the second paper feed unit by printing sheets; When printing sheets touching is opened the second paper feed and dialled paper switch, squeegee pressure roller enters the preparation before printing under the control of mechanism driving; When the paper of printing sheets enters between seal cylinder unit and squeegee pressure roller, the effect of controlling by mechanism driving, squeegee pressure roller is pressed on printing sheets on the paraffin paper surface that prints cylinder unit periphery; According to letterpress principle, at squeegee pressure roller with print under the squeezing action of compression roller of cylinder unit, printing-ink will penetrate steel mesh, the gauze that prints cylinder unit and the paraffin paper accurately image on printing sheets that makes version; Printing sheets, by printing under the cylinder rotation of unit and the effect of print separation unit, is sent the printing sheets of imaging into gradually splicing unit, thereby is completed whole printing process simultaneously.
The feature of integrated duplicating machine itself is to realize high speed printing, and print speed printing speed can reach per minute more than 130; Integrated duplicating machine can be applicable to polytype printing sheets simultaneously, comprises 35g/m
2～210g/m
2the printing sheets of scope; Therefore integrative digital duplicating machine is all higher for the whole performance requirement of walking paper system and impression system.
Its structure of squeegee pressure roller generally comprises metal shaft core and close-fitting or is molded over the flexible roller made from flexible material of metal shaft core periphery, what wherein flexible material was comparatively conventional is to adopt elastomeric material to make, certainly for making squeegee pressure roller there is better oil resistivity, wearability, soft durometer and fineness, make pressure roll be specially adapted to the requirement of rapid, high volume printing, improve the definition of printing, the service life of the utilization rate of paraffin paper and prolongation rubber roll, it is the liquid synthetic resin that primary raw material is mixed with that flexible material also can be selected by castor oil and the different hydrogen acid ether (hydrogen acid ester) of toluene two.A kind of squeegee pressure roller as disclosed for the synthetic resin rubber roll of duplicating machine and preparation method thereof > > in the patent No. Chinese utility model patent < < that is ZL92108561.3 (notification number is CN1084125Y).
The surface of the flexible roller in traditional printing pressure roll is linear structure on along its length, the diameter of going up along its length flexible roller is everywhere all identical, experimental data proves, when adopting traditional squeegee pressure roller (being that pressure roll rubber surface is linear structure) to carry out thin paper (35g/m
2～60g/m
2) when printing, often easily there is the phenomenon of printing sheets fold, greatly affected the printing effect of printed matter.
In sum, the structure of existing squeegee pressure roller also can be further improved.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, to provide a kind of can effectively prevent that the squeegee pressure roller of fold phenomenon from appearring in printing process printing sheets.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of squeegee pressure roller, comprise that metal shaft core and close-fitting, at the flexible roller made from flexible material of metal shaft core periphery, is characterized in that: the outer peripheral face of described flexible roller is from two ends towards middle part the arc of indent gradually along its length.
According to reality, use the characteristic of flexible roller, and the variety classes of the printing sheets that uses and the inherent characteristic of ink, experimental data shows that the angular range of angle of above-mentioned flexible roller two ends radius of curvature is between 0.5 °～1 °.The precision of its printing sheets imaging and paper delivery effect reach optimum state, and to be 0.618 ° be good (wherein 0.618 ° for golden section proportion) to we its both ends of the surface radius of curvature angle of designed flexible roller α here.
A kind of printing element, comprise frame, be arranged on the squeegee pressure roller in frame, this squeegee pressure roller comprises that metal shaft core and close-fitting are at the flexible roller made from flexible material of metal shaft core periphery, in described frame, be also provided with and print cylinder unit, print in cylinder unit and be provided with compression roller, compression roller contacts with the place, printing position that prints cylinder unit internal perisporium, described squeegee pressure roller is positioned at and prints outside, cylinder unit and can rotate around self axis, this squeegee pressure roller contacts with the place, printing position that prints cylinder unit periphery wall, it is characterized in that: the outer peripheral face of described flexible roller is from two ends towards middle part the arc of indent gradually along its length, in described frame, be also provided with and make the flexible roller of squeegee pressure roller and the pre-pressing structure that compression roller keeps extruding trend.
This printing element is in printing process, and according to letterpress principle, under the squeezing action of squeegee pressure roller and compression roller, printing-ink will penetrate steel mesh, the gauze that prints cylinder unit and the paraffin paper accurately image on printing sheets that makes version; The squeegee pressure roller of curved surfaces is in moulding process, compression roller in pre-pressing structure effect downforce roller and seal cylinder unit pushes mutually, the deflection that the flexible roller surface two ends of squeegee pressure roller produce will be slightly larger than the deflection of flexible roller surface middle part generation, according to the strain principle of elastomeric material, the distortion of the flexible roller self extrusion of squeegee pressure roller produces two ends to printing sheets the trend of extending, thereby guarantees the phenomenon that printing sheets can fold in coining process.
The rotating shaft that above-mentioned pre-pressing structure comprises that activity wears in frame and can rotate around self axis relative to frame; One end movable sleeve of this rotating shaft be provided with can phase the first location-plate of rotating of countershaft, the second location-plate that the opposite side of rotating shaft is slidingly connected and can phase countershaft rotates; The metal shaft core of described squeegee pressure roller is arranged between the first location-plate and the second location-plate, and this squeegee pressure roller and described shaft parallel interval arrange; Middle part between described the first location-plate and the second location-plate is fixed with trunnion shaft, and this trunnion shaft arranges between described rotating shaft and squeegee pressure roller and with shaft parallel interval; Between described trunnion shaft and rotating shaft, by connecting plate, link together; The outer end of described rotating shaft is fixed with a drive plate, is provided with and makes to drive plate to keep the extension spring of deflection trend between this drive plate and frame.
It is more than a kind of specific implementation of pre-pressing structure, by pulling of extension spring, drive the upwards upset of trunnion shaft, the first location-plate and the second location-plate phase countershaft, assurance is arranged on the flexible roller of a squeegee pressure roller printing position whole and seal cylinder unit outer peripheral face between the first location-plate and the second location-plate and is close to, and keep extruding trend with the compression roller printing in cylinder unit, this structure can guarantee to keep suitable thrust between squeegee pressure roller and seal cylinder unit outer peripheral face, guarantees that printed matter has good printing effect.
On above-mentioned drive plate, have three for the Gou She hole, one end of extension spring.By the hook between extension spring and three holes, draw, according to lever principle, regulate the position of extension spring can change extension spring to driving the pulling force of plate, finally change the squeeze pressure between squeegee pressure roller and compression roller, further guarantee that printed matter has good printing effect.
One end of the metal shaft core of above-mentioned squeegee pressure roller is arranged on described the first location-plate by clutch shaft bearing, and the other end of the metal shaft core of squeegee pressure roller is arranged on described the second location-plate by the second bearing.Squeegee pressure roller can, easily around self axis rotation, guarantee normally carrying out of printing like this.
On above-mentioned the first location-plate, have the first arc notch, the outer face of the first location-plate is provided with the first rib, on the outer face of the first location-plate, be also fixed with the first fastening plate, between described the first arc notch, the first rib and the first fastening plate, surround described clutch shaft bearing is limited to the installing space in it; On described the second location-plate, have the second arc notch, the outer face of the second location-plate is provided with the second rib, on the outer face of the second location-plate, be also fixed with the second fastening plate, between described the second arc notch, the second rib and the second fastening plate, surround described the second bearing is limited to the installing space in it.This structure is convenient to mount and dismount clutch shaft bearing and the second bearing, certainly also can directly on location-plate, arrange in order to place the chamber of bearing.
Above-mentioned the first fastening plate presses solidly on the outer face of the first location-plate by fixed cover, then is threaded with the first location-plate after passing the first fixed cover and the first fastening plate successively by the first screw; Described the second fastening plate presses solidly on the outer face of the second location-plate by the second fixed cover, then is threaded with the second location-plate after passing fixed cover and the second fastening plate successively by the second screw.This mounting means is convenient to regulate the installation site of fastening plate, and easy for installation, during adjusting, only need unscrew screw, rotate again fastening plate, finally tighten screw, certainly also can adopt alternate manner that fastening plate and location-plate are fixed, the mode being screwed as directly adopted.
Compared with prior art, the invention has the advantages that: because the outer peripheral face of flexible roller is from two ends towards middle part the arc of indent gradually along its length, like this after flexible roller is squeezed, the deflection that flexible roller surface two ends produce will be slightly larger than the deflection of flexible roller surface middle part generation, according to the strain principle of elastomeric material, the distortion of flexible roller self extrusion produces the two ends to the printing sheets being pushed by flexible roller the trend of extending, thereby guarantees the phenomenon that printing sheets can fold in coining process.
Accompanying drawing explanation
Fig. 1 is the perspective view of squeegee pressure roller;
Fig. 2 is the structure cutaway view of squeegee pressure roller;
Fig. 3 is that the A-A of Fig. 2 is to cutaway view;
Fig. 4 is the schematic diagram of flexible roller both ends of the surface radius of curvature angle in squeegee pressure roller;
Fig. 5 is the perspective view that printing element removes frame rear body part;
Fig. 6 is the schematic perspective view of pre-pressing structure in printing element;
Fig. 7 is the three-dimensional exploded view of pre-pressing structure in printing element;
Fig. 8 is the distortion schematic diagram of squeegee pressure roller in printing element;
Fig. 9 is the perspective view of printing element;
Figure 10 is that printing element is at the printing process structural representation in order in duplicating machine.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Fig. 1～4, it is the specific embodiment of squeegee pressure roller in the present invention.
A kind of squeegee pressure roller 1, comprise that metal shaft core 11 and close-fitting are at the flexible roller 12 made from flexible material of metal shaft core periphery, the innovation of this squeegee pressure roller 1 structure is that the outer peripheral face of flexible roller 12 is from two ends towards middle part the arc of indent gradually along its length, and the diameter of the cross section at flexible roller 12 two ends is greater than the diameter of the cross section at flexible roller 12 middle parts.
The flexible material that in the present embodiment, flexible roller 12 adopts is elastomeric material, and it is the liquid synthetic resin that primary raw material is mixed with that flexible material also can be selected by castor oil and the different hydrogen acid ether (hydrogen acid ester) of toluene two.
As shown in Figure 4, according to reality, use the characteristic of the quality of rubber materials of flexible roller 12, and the variety classes of the printing sheets that uses and the inherent characteristic of ink, experimental data shows that the angular range of angle of above-mentioned flexible roller 12 two ends radius of curvature R is between 0.5 °～1 °, the precision of its printing sheets imaging and paper delivery effect reach optimum state, and we designed flexible roller 12 its both ends of the surface radius of curvature angle α be take 0.618 ° as good (wherein 0.618 ° is golden section proportion) here.
As shown in Fig. 5～10, for adopting the specific embodiment of the printing element of aforementioned squeegee pressure roller in the present invention.
A kind of printing element, comprise frame 2, the parts of frame and existing duplicating machine are basic identical, squeegee pressure roller 1 is arranged in this frame 2, squeegee pressure roller 1, comprise that metal shaft core 11 and close-fitting are at the flexible roller 12 made from flexible material of metal shaft core periphery, the innovation of this squeegee pressure roller 1 structure is that the outer peripheral face of flexible roller 12 is from two ends towards middle part the arc of indent gradually along its length, it is the diameter that the diameter of the cross section at flexible roller 12 two ends is greater than the cross section at flexible roller 12 middle parts, in frame 2, be also provided with and print cylinder unit 3, print in cylinder unit 3 and be provided with compression roller 4, compression roller 4 contacts with the place, printing position that prints cylinder unit 3 internal perisporiums, squeegee pressure roller 1 is positioned at and prints 3 outsides, cylinder unit and can rotate around self axis, this squeegee pressure roller 1 contacts with the place, printing position that prints cylinder unit 3 periphery walls.
Above structure is identical with the structure substrate of printing element in existing duplicating machine.
In frame 2, be also provided with and make the flexible roller 12 of squeegee pressure roller and the pre-pressing structure of compression roller 4 maintenance extruding trend.
The rotating shaft 5 that pre-pressing structure comprises that activity wears in frame 2 and can rotate around self axis relative to frame 2, it is the perforation that the two ends activity of rotating shaft 5 is passed in the relative sidewall of frame 2, one end movable sleeve of this rotating shaft 5 be provided with can phase the first location-plate 6 of rotating of countershaft, the second location-plate 7 that the opposite side of rotating shaft 5 is slidingly connected and can phase countershaft rotates.
The metal shaft core 11 of squeegee pressure roller is arranged between the first location-plate 6 and the second location-plate 7, this squeegee pressure roller 1 and described rotating shaft 5 parallel interval settings, the one end that is metal shaft core 11 is arranged on the first location-plate 6 by clutch shaft bearing 15, and the other end of metal shaft core 11 is arranged on the second location-plate 7 by the second bearing 16.
Clutch shaft bearing 15 is arranged on the first location-plate 6 by following structure: on the first location-plate 6, have the first arc notch 61, the outer face of the first location-plate 6 is provided with the first rib 62, on the outer face of the first location-plate 6, be also fixed with the first fastening plate 17, the first fastening plate 17 presses solidly on the outer face of the first location-plate 6 by fixed cover 19, after passing successively the first fixed cover 19 and the first fastening plate 17 by the first screw 20 again, be threaded with the first location-plate 6, the first arc notch 61, between the first rib 62 and the first fastening plate 17, surround clutch shaft bearing 15 is limited to the installing space in it.
The second bearing 16 is arranged on the second location-plate 7 by following structure: on the second location-plate 7, have the second arc notch 71, the outer face of the second location-plate 7 is provided with the second rib 72, on the outer face of the second location-plate 7, be also fixed with the second fastening plate 18, the second fastening plate 18 presses solidly on the outer face of the second location-plate 7 by the second fixed cover 21, after passing successively fixed cover 21 and the second fastening plate 18 by the second screw 22 again, be threaded with the second location-plate 7, the second arc notch 71, between the second rib 72 and the second fastening plate 18, surround the second bearing 16 is limited to the installing space in it.
Middle part between the first location-plate 6 and the second location-plate 7 is fixed with trunnion shaft 9, this trunnion shaft 9 between rotating shaft 5 and squeegee pressure roller 1 and with rotating shaft 5 parallel interval settings; Between trunnion shaft 9 and rotating shaft 5, by connecting plate 10, link together; The outer end of rotating shaft 5 is fixed with a drive plate 13, between this drive plate 13 and frame 2, be provided with the extension spring 14 that makes to drive plate 13 maintenance deflection trend, drive on plate 13 and have three for the Gou She hole, one end 131 of extension spring 14, one end of extension spring 14 hooks and is located on hole 131, and the other end of extension spring 14 hooks and is located on parts sidewall.
Application with this printing element in integrated duplicating machine illustrate the operation principle of printing element and process as follows:
Its lifting platform is sent printing sheets 23 into the first paper feed unit, and the effect by paper-sheets rolling wheel 24 and layman 25 is sent to the second paper feed unit by printing sheets 23; When printing sheets 23 touching is opened the second paper feed and dialled paper switch 26, squeegee pressure roller 1 enters the preparation before printing under the control of mechanism driving; When the paper of printing sheets 23 enters while printing cylinder unit 3 and squeegee pressure roller 1, by mechanism driving, control, squeegee pressure roller 1 is pressed on printing sheets 23 the paraffin paper surface that prints cylinder unit 3 peripheries under the acting in conjunction of extension spring 14, rotating shaft 5, connecting plate 10, the first location-plate 6 and the second location-plate 7; According to letterpress principle, under the squeezing action of the compression roller 4 in squeegee pressure roller 1 and seal cylinder unit, printing-ink will penetrate steel mesh, the gauze that prints cylinder unit 3 and the paraffin paper accurately image on printing sheets 23 that makes version; Printing sheets 23, by printing under the cylinder rotation of unit 3 and the effect of print separation unit 27, is sent the printing sheets of imaging 23 into gradually splicing unit 28, thereby is completed whole printing process simultaneously.
This process is identical with the printing process substrate in existing integrated duplicating machine.
Claims (3)
1. a printing element, comprise frame (2), be arranged on the squeegee pressure roller (1) in frame (2), this squeegee pressure roller (1) comprises that metal shaft core (11) and close-fitting are at the flexible roller (12) made from flexible material of metal shaft core periphery, in described frame (2), be also provided with and print cylinder unit (3), print in cylinder unit (3) and be provided with compression roller (4), compression roller (4) contacts with the place, printing position that prints cylinder unit (3) internal perisporium, described squeegee pressure roller (1) is positioned at and prints outside, cylinder unit (3) and can rotate around self axis, this squeegee pressure roller (1) contacts with the place, printing position that prints cylinder unit (3) periphery wall, the outer peripheral face of described flexible roller (12) is from two ends towards middle part the arc of indent gradually along its length, in described frame (2), be also provided with and make the flexible roller (12) of squeegee pressure roller and the pre-pressing structure of compression roller (4) maintenance extruding trend, described pre-pressing structure comprises that activity wears the rotating shaft (5) that frame (2) is upper and can rotate around self axis relative to frame (2), one end movable sleeve of this rotating shaft (5) be provided with can phase the first location-plate (6) of rotating of countershaft, the second location-plate (7) that the opposite side of rotating shaft (5) is slidingly connected and can phase countershaft rotates, the metal shaft core (11) of described squeegee pressure roller is arranged between the first location-plate (6) and the second location-plate (7), this squeegee pressure roller (1) and described rotating shaft (5) parallel interval setting, middle part between described the first location-plate (6) and the second location-plate (7) is fixed with trunnion shaft (9), this trunnion shaft (9) be positioned between described rotating shaft (5) and squeegee pressure roller (1) and with rotating shaft (5) parallel interval setting, between described trunnion shaft (9) and rotating shaft (5), by connecting plate (10), link together, the outer end of described rotating shaft (5) is fixed with a drive plate (13), is provided with and makes to drive plate (13) to keep the extension spring (14) of deflection trend between this drive plate (13) and frame (2), it is characterized in that: on described drive plate (13), have three for the Gou She hole, one end (131) of extension spring (14), it is upper that one end of the metal shaft core (11) of described squeegee pressure roller is arranged on described the first location-plate (6) by clutch shaft bearing (15), and the other end of the metal shaft core (11) of squeegee pressure roller is arranged on described the second location-plate (7) by the second bearing (16), on described the first location-plate (6), have the first arc notch (61), the outer face of the first location-plate (6) is provided with the first rib (62), on the outer face of the first location-plate (6), be also fixed with the first fastening plate (17), between described the first arc notch (61), the first rib (62) and the first fastening plate (17), surround described clutch shaft bearing (15) is limited to the installing space in it, on described the second location-plate (7), have the second arc notch (71), the outer face of the second location-plate (7) is provided with the second rib (72), on the outer face of the second location-plate (7), be also fixed with the second fastening plate (18), between described the second arc notch (71), the second rib (72) and the second fastening plate (18), surround described the second bearing (16) is limited to the installing space in it.
2. printing element according to claim 1, is characterized in that: the angular range of the angle (α) of described flexible roller (12) two ends radius of curvature is between 0.5 °～1 °.
3. printing element according to claim 1, it is characterized in that: described the first fastening plate (17) presses solidly on the outer face of the first location-plate (6) by fixed cover (19), then be threaded with the first location-plate (6) after passing the first fixed cover (19) and the first fastening plate (17) successively by the first screw (20); Described the second fastening plate (18) presses solidly on the outer face of the second location-plate (7) by the second fixed cover (21), then is threaded with the second location-plate (7) after passing fixed cover (21) and the second fastening plate (18) successively by the second screw (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010129150.4A CN102189855B (en) | 2010-03-18 | 2010-03-18 | Printing pressure roller and printing unit with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010129150.4A CN102189855B (en) | 2010-03-18 | 2010-03-18 | Printing pressure roller and printing unit with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102189855A CN102189855A (en) | 2011-09-21 |
| CN102189855B true CN102189855B (en) | 2014-03-05 |
Family
ID=44599022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010129150.4A Expired - Fee Related CN102189855B (en) | 2010-03-18 | 2010-03-18 | Printing pressure roller and printing unit with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102189855B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643967A (en) * | 2016-03-21 | 2016-06-08 | 江苏通用科技股份有限公司 | Cambered surface composite rubber roller |
| CN107554047A (en) * | 2017-09-26 | 2018-01-09 | 平湖纬宸机械科技有限公司 | A kind of compression roller of printing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153455Y (en) * | 1993-04-03 | 1994-01-19 | 卓双之 | Printing roller |
| CN1451552A (en) * | 2002-04-15 | 2003-10-29 | 东北理光株式会社 | Porous printing apparatus |
| CN2601835Y (en) * | 2003-01-30 | 2004-02-04 | 上海高斯印刷设备有限公司 | Paper joint roller of web offset machine |
| CN201026719Y (en) * | 2007-04-29 | 2008-02-27 | Duplo(山东)办公设备有限公司 | Impressing mechanism of integrated machine for master-making and printing |
-
2010
- 2010-03-18 CN CN201010129150.4A patent/CN102189855B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153455Y (en) * | 1993-04-03 | 1994-01-19 | 卓双之 | Printing roller |
| CN1451552A (en) * | 2002-04-15 | 2003-10-29 | 东北理光株式会社 | Porous printing apparatus |
| CN2601835Y (en) * | 2003-01-30 | 2004-02-04 | 上海高斯印刷设备有限公司 | Paper joint roller of web offset machine |
| CN201026719Y (en) * | 2007-04-29 | 2008-02-27 | Duplo(山东)办公设备有限公司 | Impressing mechanism of integrated machine for master-making and printing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102189855A (en) | 2011-09-21 |
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Granted publication date: 20140305 Termination date: 20200318 |