Equipment selection
The type of equipment to be combined with the type of live, determine the paper and color number printing.
(1) Paper web
Under normal circumstances, large six-opening, large eight-open (including four open) small offset press is mainly used for printing of social parts, as well as printing of documents, notes and test papers of institutions, schools and other enterprises and institutions. If you are planning to develop or do office work in the short-run, quick printing market for social business parts, then six-power boot should be your first choice.
(2) Color number
Mainly to print monochrome, choose a small monochrome offset machine equipment supplies. Monochrome machines can also process color work, but printing monochrome on two-color or even four-color machines is not economical. The multi-color small offset press has the advantages of small format, flexible printing, high speed, high overlay accuracy, and good dot reproduction quality, and is suitable for performing color short-run rapid printing business such as printing short-page color publicity pages, sample small-volume self-adhesive labels, and the like.
Equipment performance
The most familiar performance of offset presses is the speed of printing, but other factors such as production space, preparation time, maintenance, and availability of available parts must also be considered. Generally used to print short-lived equipment, the speed is not too high, long-lived version is contrary to the need to select the machine model according to the existing site machine should be easy to maintain, in order to extend its service life: In addition, to check whether the spare parts supply is timely, most equipment now The Chamber of Commerce provides sufficient spare parts to provide timely assistance when needed.
Printing performance
(1) Printing accuracy
The main consideration is whether the precision of the printed mesh adjustment product can reach 175 lines/inch ink balance, and whether the stable network dot deformation amount is clear and plump.
(2) Overprint performance
In multi-color printing, the overprint accuracy of the machine is particularly important, especially for printing thin paper bills, single sheets, etc., and the printing rules are more accurate and stable. Inspecting the multicolor machine must test the coincidence of the overprinting rule lines. General domestic offset printing equipment requires overprinting error is less than O.1mm. The overprint error of imported equipment is generally less than 0.05mm.
(3) Working stability
Observe the smoothness of the machine when it is running at the highest speed. Checking the vibration level Monitoring the noise while printing the highest speed of the tissue paper and the stability of the component parts are also important inspection indicators. In addition, the machining accuracy of the machine should be fully tested, that is, the machining level of the parts and the precision of the castings.
(4) Automation Control
Mainly to see whether the equipment operation is quick and convenient, and whether the control system can complete various operations and inspections through the central operation panel and carefully check the accuracy of preset water and ink, automatic sorting of equipment (guarantee the orderly work of various institutions), and detection of paper Transmission failure and automatic clutch pressure.
Additional equipment
Many manufacturers now also offer some optional equipment to facilitate other processes, such as cutting and labeling, coating and drying (curing) devices, ie, the above-mentioned multi-functional small offset printers. The user should rationally configure and increase the added value of printed materials according to the business characteristics and quality requirements.
Brand choice
At present, imported brands such as Heidelberg, Ryobi, Hamada, Ebara and Adast are all occupying a certain share in the domestic small offset press market.
The type of equipment to be combined with the type of live, determine the paper and color number printing.
(1) Paper web
Under normal circumstances, large six-opening, large eight-open (including four open) small offset press is mainly used for printing of social parts, as well as printing of documents, notes and test papers of institutions, schools and other enterprises and institutions. If you are planning to develop or do office work in the short-run, quick printing market for social business parts, then six-power boot should be your first choice.
(2) Color number
Mainly to print monochrome, choose a small monochrome offset machine equipment supplies. Monochrome machines can also process color work, but printing monochrome on two-color or even four-color machines is not economical. The multi-color small offset press has the advantages of small format, flexible printing, high speed, high overlay accuracy, and good dot reproduction quality, and is suitable for performing color short-run rapid printing business such as printing short-page color publicity pages, sample small-volume self-adhesive labels, and the like.
Equipment performance
The most familiar performance of offset presses is the speed of printing, but other factors such as production space, preparation time, maintenance, and availability of available parts must also be considered. Generally used to print short-lived equipment, the speed is not too high, long-lived version is contrary to the need to select the machine model according to the existing site machine should be easy to maintain, in order to extend its service life: In addition, to check whether the spare parts supply is timely, most equipment now The Chamber of Commerce provides sufficient spare parts to provide timely assistance when needed.
Printing performance
(1) Printing accuracy
The main consideration is whether the precision of the printed mesh adjustment product can reach 175 lines/inch ink balance, and whether the stable network dot deformation amount is clear and plump.
(2) Overprint performance
In multi-color printing, the overprint accuracy of the machine is particularly important, especially for printing thin paper bills, single sheets, etc., and the printing rules are more accurate and stable. Inspecting the multicolor machine must test the coincidence of the overprinting rule lines. General domestic offset printing equipment requires overprinting error is less than O.1mm. The overprint error of imported equipment is generally less than 0.05mm.
(3) Working stability
Observe the smoothness of the machine when it is running at the highest speed. Checking the vibration level Monitoring the noise while printing the highest speed of the tissue paper and the stability of the component parts are also important inspection indicators. In addition, the machining accuracy of the machine should be fully tested, that is, the machining level of the parts and the precision of the castings.
(4) Automation Control
Mainly to see whether the equipment operation is quick and convenient, and whether the control system can complete various operations and inspections through the central operation panel and carefully check the accuracy of preset water and ink, automatic sorting of equipment (guarantee the orderly work of various institutions), and detection of paper Transmission failure and automatic clutch pressure.
Additional equipment
Many manufacturers now also offer some optional equipment to facilitate other processes, such as cutting and labeling, coating and drying (curing) devices, ie, the above-mentioned multi-functional small offset printers. The user should rationally configure and increase the added value of printed materials according to the business characteristics and quality requirements.
Brand choice
At present, imported brands such as Heidelberg, Ryobi, Hamada, Ebara and Adast are all occupying a certain share in the domestic small offset press market.
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