印前技术宝典（Prepress technology collection ）

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1、印前技术宝典3（Prepress technology collection 3）According to the different use of paper, it can be divided into industrial paper, packaging paper, living paper, cultural paper and so on. Among them, cultural paper includes writing paper, art drawing paper and printing paper. In printing paper, according to

2、 the performance and characteristics of the paper are divided into newsprint and letterpress printing paper, offset printing paper, coated paper, dictionary and sea map drawing, painting, printing paper, newspaper weekly newspaper, white paper, writing paper. In addition, some high-grade prints are

3、also widely used in art drawing paper.Newsprint newsprint: mainly used for newspapers and some books and letterpress printing, paper soft, rich elastic plastic, ink absorption ability, have certain mechanical strength, suitable for different kinds of high-speed rotary printing machine. This paper is

4、 made of wood paddle as raw material, containing more lignin and impurities. The paper is easy to yellow, crisp and water resistant, so it should not be preserved for a long timeLetterpress paper: This is a special paper used in letterpress printing, paper properties of newsprint, water resistance,

5、color purity, the paper surface smoothness is newsprint slightly better ink absorption is more uniform, but strong ink capacity than newsprint to the poor.Offset printing paper, offset printing paper for offset (offset) is a kind of printing paper, is divided into single-sided offset paper and offse

6、t paper surface two, single-sided offset paper is mainly used for printed posters, packaging boxes; two-sided offset paper is mainly used for printing pictures, pictures etc. Offset paper closely, scalability small, anti water ability, can effectively prevent the deformation of the paper, multicolor

7、 overprint dislocation, napping, shedding and other illnesses. It can maintain good quality and purity of printed matter.Offset coated paper: also known as coated paper, paper is coated with a layer of inorganic coatings by a super pressure light made of high-grade paper, paper surface smooth, high

8、purity, printing can get more detailed and smooth network, can reproduce the original layered, widely applied to art pictures, brochures, leaflets and other business.Gravure printing paper: gravure printing paper is white and strong, with good smoothness and water resistance. It is mainly used for p

9、rinting banknotes, stamps and other high-quality and difficult to imitate the printed matter.White paper: white paper is a fibrous tissue is more uniform and the surface layer with filler and rubber composition and surface coated with a layer of paint, a paper by multi roll calender made out of pape

10、r, color quality has high purity, uniform ink absorption, a folding degree good, mainly for goods packing box, commodity table liner, charts and other pictures.Synthetic paper: synthetic paper is the use of chemical raw materials such as alkenes and adding some additives made with soft texture, corr

11、osion resistance, water resistance, high tensile strength, resistance to hot and cold resistance, and resistance to chemicals and no environmental pollution, good air permeability, widely used in advanced art, maps, pictures high-grade, books and other printed.4, the performance requirements of pape

12、rWhether the paper can be used for printing smoothly or not depends on the printability of the paper. Requirements for printing on paper: paper color as far as possible to achieve the same texture color purity, paper dust shall not exceed the allowable range, with minimum transmission rate, and ensu

13、re the mechanical strength of normal printing, paper thickness, compactness and structure characteristics of the same to keep in the same printing in the bulk, the edges of the paper should be right angle and the pitch error is not more than 3mm.Smoothness of the paper: the smoothness of the paper d

14、etermines the printing quality of the printed matter. The smoothness of the paper in nano imprint lithography, can make contact with the layout, so that the ink layer on the plate can be evenly transferred to the paper surface smoothness, low paper, because the printing surface is not flat, causing

15、the surface contact with the paper layout imprint is not uniform, so that the ink layer of the transfer to the the paper presents the phenomenon of uneven progress, such as touch on the smoothness of the lower paper, can be appropriately increased when printing in the printing pressure, can properly

16、 make up due to its uneven surface imprinted hair deficiency phenomenon.Such as dry vegetable oil, mineral oil, solvents and water, as well as a variety of synthetic resins. The use of ink in the process of fluidity, viscosity, acid value, neutral shade, water resistance and printing performance dep

17、ends on the bonding material, the same kind of paint can be used to connect different materials to make different types of ink; connected with a material due to the use of different pigments, made of is the same type of ink, because it does not have to change the ink connection material properties,

18、so the quality of the ink, in addition to the paint itself, mainly depends on the connection material.Fillers are white, translucent, translucent or opaque powdery materials that act as fillers. The proper use of some fillers in the pigment can not only reduce the amount of pigment to reduce the cos

19、t, but also adjust the dilute consistency and fluidity of the ink, and also improve the flexibility of the ink formulation design.Additives are materials added to improve the performance of the ink itself in the manufacture or printing of ink. When the ink composition according to the basic characte

20、ristics in some aspects still can not meet the requirements, or because the conditions change can not meet the requirements of the use of the printing, you have to join a small amount of additional material to solve.2, the types of inkAccording to different methods, ink can also be divided into diff

21、erent types. Commonly used for letterpress printing ink, lithographic printing ink, gravure printing ink, screen hole printing ink, special functional ink, etc.Letterpress printing ink according to the different characteristics and can be divided into books and printed ink, color letterpress printin

22、g ink (printing ink), letterpress printing ink, rubber plastic letterpress printing ink for plastic (plastic flexo ink), letterpress type ink, rotary letterpress ink etc. This kind of ink basically belongs to the infiltration drying type ink, in the printing process should pay attention to bad adhes

23、ion, powder, dirty and other ills appear.Lithographic printing ink including all kinds of offset printing ink, offset printing ink, photosensitive lithographic printing ink, printing ink and other thermosetting. Ink for offset printing requires high tinting power, high water resistance, good flowabi

24、lity and drying speed.Gravure printing ink includes a variety of gravure ink, engraving intaglio ink, Gravure plastic film ink, etc.Screen stencil printing ink including screen printing ink, screen printing ink, plastic Stencil Ink, Stencil Ink oily water etc.In addition to the above several kinds o

25、f ink, and a guide can play some special effects of ink, ink, such as micelles gold and silver ink, fluorescent ink, magnetic ink, anti-counterfeit ink, conductive ink, carbon ink, ink, ink for monitoring temperature indicator, color ink, ink and other edible.3, the characteristics of inkInk is a ki

26、nd of paste with a certain fluidity, viscosity, bending negative value, thixotropy, liquidity, drying and so on, determine the performance of ink.Viscosity is a property that prevents the flow of fluid, and is a measure of the relative mobility between molecules, which is the resistance of fluid flo

27、w. About the nature and structure of transfer paper, ink viscosity and printing ink in the ink viscosity is too large, the transfer of ink in the printing process is not easy to be uniform, and the occurrence of paper galling phenomenon, the layout of hair; ink viscosity is too small, easy emulsific

28、ation, dirty, affect the quality of printed matter. In printing process, the requirement of ink viscosity depends on the printing speed of printing machine, the degree of public software on paper structure, the change of temperature and humidity in the surrounding environment and so on.Yield value:

29、the minimum moving stress required for the liquid to start flowing. The ink yield value is too large, liquidity will become worse and difficult to open, the yield value is too small, printing dot and easy to halo, resulting in printing is not clear. The yield value is related to the structure of the

30、 ink, and has a direct impact on the flow of ink. It is an important detection index for the quality of offset printing and gravure printing ink.Thixotropic ink: refers to the external force of mixing with the stirring action by the thick thinning, when stirring motion stops, and return to the origi

31、nal time consistency phenomenon. The thixotropic ink, the ink by the rotation of the roller in the printing machine, will increase the liquidity, increase the ductility, easy to transfer ink; when the ink is transferred to the paper after printing, lost the effect of external ink changed from thin t

32、o thick but not around to flush, the formation of good imprinting. If the thixotropism is too large, the ink in the ink is not easy to turn, will affect the function of the ink roller.Liquidity: refers to the ink under its own gravity, will flow like a liquid, the viscosity of the ink, yield and thi

33、xotropy determine, and also have a close relationship with temperature. Ink flow affects the ink from the container, can pour from the ink storage tank in conveying to ink printing machine, smooth transmission, from the ink fountain on a printing press for good distribution, to the layout of the tra

34、nsfer and transfer to the substrate, but also affects the printing effect.Length: refers to the ink at the beginning of stretch without breaking the filamentous, its length by the degree of thixotropy, yield value and plastic ink viscosity. Short is the good performance of the ink printing ink in of

35、fset printing and letterpress printing, ink flying will not cause the phenomenon, in the printing process in China at the same time, the printing ink layer is uniformly thick. The length is a commonly used method to measure the performance of ink.Dry ink: ink drying refers to ink attachment form pri

36、nt in print, a solid coating process from liquid or paste, this process is caused by the ink in the side of the material change from liquid or paste into a solid and complete. Because all kinds of ink used in the connection and its formula proportion is not the same, so the drying process of ink is

37、also different. The ink from the plates to the printing surface, the ink connection material to produce a part of penetration, and binder solvent begin to evaporate, some connection material began to produce chemical reaction or physical reaction, so that the imprinted ink surface gradually increase

38、 its viscosity and hardness, and ultimately the formation of solid film. Usually the letterpress printing ink to the permeability of dry, offset printing ink to the oxidation of trabeculectomies dry, gravure printing ink because of the strong solution of volatile agent material for connection, so in

39、 the volatile drying.Common sense and demonstration price of prepress printing1. paper units:A. G: a square meters of weight (length * width, 2 =g weight)B. order: 500 pieces of paper unit called: order (factory specifications)C. tons: as usual units, 1 tons =1000 kg, used for paper price.Specificat

40、ion and name of 2. paper:A. paper is the most common four kinds of specifications:(1) positive paper: 109.2 cm long and 78.7 cm wide(2) generous paper: 119.4 cm long and 88.9 cm wide(3) self-adhesive: 765 cm long and 535 cm wide(4). Positive and tolerant specification, but on paper. In the paper. Th

41、e paper, paper prices (see the price of paper classification).The most common name of B. paper:(1): 17g. Copy paper is: Specification for value-added tax votes, gift packaging, is pure white.(2). Typing paper: 28g is used for the single degree of specification:. Form, have seven kinds of colors: red

42、. Yellow. White. Blue. Green. Green and purple.(3): 35-40g. The degree of glazed specifications: a light, for the single table. note, low-grade printing paper.(4) writing paper: 50-100g is generous and positive. It is used in low grade printing paper, and domestic paper is the most.(5) double offset

43、 paper: 60-180g is generous and positive. It is used in mid grade printing. It is made in china.(6) newsprint: 55-60g roller paper, positive paper. Newspaper selection.(7): 40-150g. Carbonless paper generous. The degrees of positive, direct copying function, divided. In the paper,The upper and lower

44、 paper can not be exchanged or turned, the paper price is different, there are seven colors, often used in the joint form.(8).Art paper：A. double copper 80-400g is positive and generous. It is used for high grade printing.B. single copper: tray.carton. Carton bags. Kits. High-grade printing.(9) sub

45、powder paper: 105-400g used in elegant, high-grade color printing.(10) grey bottom white paper: more than 200g, white bottom ash, used in packaging category.(11) white cardboard: 200g, double white, used in mid-range packaging category.(12) kraft paper: 60-200g, for packaging. Cartons. File bags. Fi

46、le bags. Envelopes.(13) special paper: usually imported paper, mainly used for cover, decorations, handicrafts, fine printing, etc.Bidding formula and skills:(1) carefully observe the customer strength and customer printing samples.(2) carefully measure sample specifications, paper and various prepr

47、ess processes.(3) use calculator to calculate cost and profit in detail.(4) the quoted price uses pun, the price is not high (refers to not higher than the customer psychological price), the price is not low (refers to the lower peer price).(5) bargaining refers to the rationale of negotiating a bid

48、 with a client.Such as: choose paper size, paper good and bad, film domestic and import, printing quality, delivery time, what machine to choose printing and other advanced. Good conditions to let the other side accept your offer.(6) demeanor: tact, generosity, honesty, sense of responsibility(7). L

49、anguage and courtesy. Civilized. Laugh and then be neither humble nor pushy.4. school draft and delivery skills:(1) the draft gives each other attention, attention to words, specifications, color samples, delivery time, etc., and allow customers to approve. Signature.(2) to disperse the customers at

50、tention (product shortage) in the delivery, and introduce the customers concern, so that the customer satisfaction is terminated.5. deposit and payment skills:(1) explain the reason of the deposit to the client:A. proofing proofing. The cost of investment.B. let customers be sincereC. refused to che

51、at words, let customers understand the inevitability of deposit.(2) after the acceptance of the goods, the customer must sign the bill (delivery order), and then provide the customer with the receipt (receipt, invoice), allowing customers to fulfill the agreement or contract collection methods.More

52、talk about our difficulties, less talk about each other is not, let customers do not pay a little sense of lack of reason.If you cant pay for other reasons, let the leaders sign the word no payment and specify the next payment time.6. how to deal with the fault and quality problems:(1) the other par

53、tys fault, according to the actual amount and customer attitude peacefully resolved, let the other side try to take paper money, printing fees, and other costs, negotiation to reach a consensus between the two sides so far.(2) our fault, can let the other party accept for the purpose, strong to redu

54、ce price, gift, next reprint and other methods.7. quotation formula:(1). The weight (length * width / 2) = 0.531 weight degree of law: a generous 0.43 weight(2). Method: weight (Law) * * / 500 grams / ton price a number * * 1.1% open set = total loss of goods paper moneyCase 1: there is a customer p

55、rinting 5000 big open 16, 157 double copper, ask for paper money is how much?Formula: x x g weight ton price / 500 * * 1.1%=, open the number of print for total price of paper0.531 x 157 x 7500 yuan / g 500 / 16 * 5000 * 1.1%=430 Zhang open yuan (paper price)Case 2: there is a customer printing 8000

56、 big 16 open 80 grams of double offset paper, how much is paper money?Formula: 0.531 x 80 x 6500 / 500 g / 16 * 8000 * 1.1%=304 Zhang Yuan (paper price)Case 3: a customer India 700 Manual: including 60 grams of paper each of the 20 Zhengdu 16 open for paper is how many cover?Formula: x x g weight to

57、n price / 500 * * 1.1%=, open the number of print for total price of paper0.43 x 60 x 5500 yuan / g 500 / 16 open (70 x 20 x print x 1.1%=273 yuan Zhang)Case 4: a 50 thousand x 4 customer printed stickers 5cm asked how much money a fillet,?Formula: 0.002 cm * * customers print = paper money0.002 x 2

58、0 (4 x 5cm) x 50000 =0.04 yuan (total paper money)Case 5: a 200 single customer carbonless paper printed the 16 open two. Three. Four. How much paper money?Formula: two 3.43 3.93 4.19 4.34 triple quadruple WulianThe law of connection number = the number = the total amount of paperTwo: 686 yuan: 786

59、yuan triple quadruple: 838 yuan five: 868 yuanCase 6: there are one customer seal No. 2,.5 number.6,.7 number.9 standard envelope, each of 1000 uses 100 grams of double gummed paper, ask each specification. Open number. What is the price of paper?Law:A. finished product specification:No. 2: 11 x 18c

60、m 15 open (paper size 26 x 21)No. 5: 11 x 22cm 12 open (paper size 26 x 24)No. 6: 12 x 23cm 12 open (paper size 27 x 26)No. 7: 16 x 23cm 8 open (paper size 39 x 27)No. 9: 23 x 32cm 4 open (paper size 39 x 54)0.43 grams of 100 tons of law * * price of 6500 yuan / 500 / open number * * 1.1%= the price

61、 of paper printing1000 paper money:Number 2: 41 yuanNumber 5.6: 51 yuanNumber 7: 77 yuanNumber 9: 154 yuan7. cases have a customer India 16.28 100 for each of the three grams of the price of paper is how much?Law: 1.39 x = print paper money (139 yuan) (32 / 28 * 2)The above examples are common examp

62、les, not often due to love or ask business executives answer.9. how to learn how to make paper and choose the right degree paper:Law: customer printing specifications for long. Wide size. With magnanimity and degree of paper size divided by the customer specifications. Long width of two times, the l

63、argest number is selected, the number of open.Example 1: customer product specification is 23 * 20cm of how much the number is big?With 80 grams of paper should be positive and generous?119.4 / 23=5 knife (20) 109.2 / 23=4 knife (20)119.4 / 20=5 knife (15) 109.2 / 20=5 knife (15)88.9 / 23=3 knife (1

64、5) 78.7 / 23=3 knife (15)88.9 / 20=4 knife (20) 78.8 / 20=3 knife (20)Generosity: 0.03 yuan / ZhangPositive: 0.0327 yuan / Zhang(the above price is calculated by the above formula)Generous paper should be used as printing paper.10. how to learn make-up on the plane?Law: printing specifications add no more than the printing machine specifications, known as the board machine specifications.Example: 8 on the machine size of 27 x 39cm, 44 x 29.5cm4 on the machine size of positive 54 x 39cm, generous 44 x 59cmThe size of the machine is 78 x 54cm an