Offset sheet printer with ultraviolet dryer and offset printing

[Detailed Description of the Invention]

[Industrial Application] It is related with the improvement art dried by ultraviolet rays using ultraviolet drying type ink about the Offceller 1-sheet printing machine in printing industry. [Description of the Prior Art] Recently, in offset printing, the ratio of what (henceforth UV printing) is printed using ultraviolet drying type ink has been increasing very much. Here, the merit and demerit of UV printing are mentioned. Merinot ■ In order not to harden ink, make it solid on a printing machine, it does not generate printing failure, and leads to improvement in right Paper rate and yield, until it irradiates with ultraviolet rays. ■ After an ultraviolet exposure, since it solidifies immediately, it can carry out for liking the work of a back process. ■ Offceller j and printing can be performed easily [ materials other than VCM/PVC, polypropylene, and a synthetic paper ]. Demerit ■ Ultraviolet drying type ink is expensive. ■ In order that ink might not harden until it irradiates with ultraviolet rays, the color was attached, or it is self-ink Samurai ink + sumi ink (when printing - concave ink + red ink + yellow ink, the white ink under the maximum Tsuyado part of sumi ink does not harden.) on a transparent original fabric. When printing of the ink is especially piled up and carried out under sumi ink, Since sumi ink did not penetrate ultraviolet rays, lower ink did not harden, and when the ink of white ink, an anchor coat agent, or a metal color was piled up by the uncured state and printing was carried out, it had the problem that ink did not fully get, it came to print in 2 steps, and if it was J Leave, there was nothing. Therefore, printing of the 1st mouth They are an ultraviolet exposure and the 2nd printing at white + white. It is necessary to divide with an ultraviolet exposure and to print in sumi + indigo blue + red + yellow. ■ From thermal energy t This which occurs with ultraviolet rays, a generating To shake case has elasticity and discoloration of an original fabric. Above Demeliso 1-■ happens because the conventional offset sheet printing machine has formed the ultraviolet drying device only in the delivery part. Considering why there was nothing that attached the ultraviolet drying device between the printing units of the usual offset sheet printing machine, since it becomes and and ultraviolet rays with a narrow space to Lie] Kick leaking, and hitting a blanket trunk etc. with a trouble, in consideration of safety, it seems that there would be nothing. [The Object of the Invention] present invention is providing the offset sheet printing machine and offset printing method which can perform at once it having to carry out in 2 steps, when printing 5 or more colors etc. which is the faults of the above-mentioned UV printing. A useless means to solve C subject] In order to solve the above-mentioned subject, the present invention is set to an offset sheet printing machine, An ultraviolet drying device is formed at least between the 1st amorous glance, the 2nd amorous glance and the 2nd amorous glance, and the 3rd amorous glance, It is not right-angled to impression cylinder tangential adjusting in the ultraviolet drying device between the above-mentioned printing units, It attaches in the direction opposite to a blanket trunk with an angle, and attaches a gobo to the paper guide in front of a blanket trunk, The gobo is set by the size of paper, enables change of shading area with a paper guide, or provides the offset sheet printing machine which provided thermal insulation in the lamp house of the above-mentioned ultraviolet drying device, and the step of the printing machine. Color Mabe is provided with the offset printing method which prints the ink which has metal colors, such as white ink, an anchor coat agent or gold, and silver, with the printing machine which allocated the ultraviolet exposure device just before printing sumi ink immediately after this color Mabe, and this color Mabe. [Detailed explanation] Here, a drawing explains the difference at the time of printing with the printing machine which has an ultraviolet drying device only to the case where it prints with the printing machine of the present invention, and the conventional delivery part. Drawing 7 is an explanatory view at the time of using and printing an ultraviolet drying device in + delivery part between colors which is one example of the present invention. Ink (an anchor coat agent, self-ink, etc.) 32 is printed to original fabrics (- vinyl chloride sheet and polypropylene sheet film coated paper 2 paper etc.) 31, and it dries with ultraviolet drying device 8 between colors (hardening), and makes ink into 32*, After printing color ink 33 on it, color ink is dried with delivery part ultraviolet drying device 9, and it is considered as 33." If it prints at the above process, it will dry, and ink 32*33 will become ink 32degree and 33", and will be printed satisfactorily. On the other hand, Drawing 8 is an explanatory view at the time of using and printing an ultraviolet drying device only in the conventional delivery part. It dries with delivery part ultraviolet drying device 9 after printing ink (an anchor coat agent, white ink, etc.) 32 and color ink 33 to original fabrics (salt A hissile, a polypropylene sheet, film coated paper 2 paper, etc.) 31. Ink 33 under color ink 33 is not dried in case of such a printing method (hardening). If it prints at the above process, the trouble which Apart one time from the portion of ink 32 undried (hardening) will occur. [Function] By [ of an offset sheet printing machine ] forming an ultraviolet drying device at least between the 1st amorous glance, the 2nd amorous glance and the 2nd amorous glance, and the 3rd amorous glance, what was Printing(ing) twice conventionally can carry out now by Printing once. It is the conventional wet when printing white ink etc. on the original fabric which has metal colors, such as gold and silver. on Although heavy printing was performed 2 times thru/or 3 times by the wet offset method (it prints on the ink which is not dried) since the amount of ink had a limit, It is dry by offset printing by making it harden, whenever it prints 1 color with the ultraviolet drying device between colors. on wet printing (it prints on dry ink) was enabled, and the thick peak of ink was also made possible. [Example] Hereinafter, an example is described in detail using a drawing. Drawing 1 shows the approximate account figure of the offset sheet printing machine with an ultraviolet drying device of the present invention. From feeder 1, impression papers (it is described as paper below), such as paper, are fed, and it is carried to delivery part 4 between rollers through between blanket trunk 6. impression cylinder 18 * passage rollers 7. Ink is transferred to paper from blanket trunk 6 to which the ink of the picture part was transferred from printing cylinder 5 with the 1st amorous-glance printing unit 2, drying with ultraviolet drying device 8 (hardening) -- the 2nd amorous-glance printing unit 3 -- following Section 3 -- it is printed so that it may be called ..., and it dries with ultraviolet drying device 9 of 17.6KwX5 light finally installed in the delivery part. Although the ultraviolet drying device was formed between printing units in this example between the 1st amorous glance, the 2nd amorous glance and the 2nd amorous glance, and the 3rd amorous glance, proper film if is good by necessity. The ultraviolet drying device of this example provided between colors used 16Kwl light due to the space. Although not illustrated, thermal insulation was provided in the lamp house of an ultraviolet drying device, and Step 15 of the printing machine so that heat might not be spread around. The 2nd time is the elements on larger scale of the portion of ultraviolet drying device 9 of a delivery part. The mercury lamp and mirror 12 of a water cooled system are in light implement 10, and paper 29 to which the bottom of it was added by gripper bar 14 passes. The lower part of a light source has guide 13 under a water cooled tube. The attachment of color Mabe's ultraviolet drying device 8 of Drawing 3 is the elements on larger scale explaining a position. Step board 15 is moved to the 50-mm upper part from the conventional position, the space which installs ultraviolet drying device 8 is made, and direction of radiation 17 is turned from a line perpendicular to a tangent below to impression cylinder I8. A gobo is attached to paper guide 16 so that ultraviolet rays may not be in charge of paper removal, and it enables it to adjust a position with the size of a paper. Drawing 4 shows the example of the layout of gobo 19.2021.22 of ultraviolet drying device 8, 23, 24, and 25.26. Drawing 5 is a partial explanatory view explaining gobo 27 attached to the above-mentioned Breath guide. Drawing 6 is the elements on larger scale explaining gobo 28 to blanket trunk 6. Gobo 28 is attached to Step 15 and can consider the method of choosing out of several kinds of inside with paper size, or making it slide etc. [Effect of the Invention] Although there was the enough number of printing machine units to the number of print colors, printing became possible at once about having divided more than 2 times or it, and having printed. Thereby, shortening of printing time and the number of times of a printing change also decrease, and it can also aim at effective use of a cylinder. It is Oy dry to offset printing by making it dry with the ultraviolet drying device between colors, whenever it prints 1 color (hardening). on wet printing is enabled and the thick peak of ink becomes possible.

[Brief Description of the Drawings]

Drawing 1 is an approximate account figure of the offset sheet flatbed press with an ultraviolet drying device of the present invention, It is a partial expansion explanatory view of the ultraviolet drying device which installed Drawing 2 in the elements on larger scale of the ultraviolet drying device of a delivery part, and installed Drawing 3 in color Mabe in which it takes and With shows a position, A process explanatory view when the partial expansion explanatory view and Drawing 7 in which Drawing 4 shows the gobo layout explanatory view of an ultraviolet drying device, Drawing 5 shows the partial expansion explanatory view of a paper guide with a gobo, and Drawing 6 shows a blanket gobo are printed with the printing machine of the present invention, and Drawing 8 are process explanatory views when it prints with the conventional printing machine. 1 [ ... Delivery part 5 / ... Printing cylinder 6 / ... Blanket trunk 7 / ... Delivery trunk 8 / ... Color Mabe ultraviolet drying device ] ... Feeder 2 part ... The 1st amorous-glance printing unit 3 ... The 2nd amorous-glance printing unit 4 9 [ ... Mirror 13 / ... Guide 14 under a water cooled tube / ... Gripper bar 15 / ... Step board 16 / ... Paper guide 17 / ... Direction of radiation 18 / ... Impression cylinder ] ... Delivery part ultraviolet drying device 10 -.. Light implement 11 ... Water-cooled lamp 12 19.20-2122 23.24.25.26 -.. Gobo 27 ... Gobo (= J paper guide [ ... Original fabric 32 / ... Ink 32' / ... Dry (hardening) ink ] 28 ... gobo 29 ... paper 31) 33 ... Color ink 33' ... Dry (hardening) ink patent Application for recording Toppan Printing Co., Ltd. Representative Kazuo Suzuki Drawing 7 the 8th -- "