Some tips for printing adaptability
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
Finishability of the finished product
Poster:
Mostly a single print. The requirements for paper use should be that it is not easy to stretch, and the ink used should not fade easily. Because it is mostly hung in the lobby, it is easy to be exposed to the wind and the sun. It is best to protect it with a layer of PP or OPP film after printing, which will not only enhance the color brightness, but also make it difficult to make the surface Damaged, there are also opportunities to prevent UV radiation and reduce fading.
Product list:
Its main function is to express the characteristics and advantages of the product, so the aesthetic appearance is the most important condition. Such prints must use high-grade paper, beautiful color pictures, exquisite design, careful processing and binding, so that readers like to achieve the publicity effect at a glance.
Magazine:
This is a reading for the public, sometimes there are certain objects, the paper used is mostly coated paper or offset paper, the printing method is mostly lithographic, the binding method is generally saddle stitching or wireless binding. There are also time and quality requirements when making.
Books:
It is divided into paperback and hardcover books, and paperback wireless binding is used for books such as schools and general novels. Hardcover is more focused on advanced books, dictionaries, etc. In the production, in order to adapt to its long-term preservation characteristics, it must be straighter in the direction of the long side of the trade.
Form:
Often multi-connected, currently using more non-carbon paper, can avoid the use of carbon paper as its main advantage, but non-carbon paper has paper, medium and paper, the upper paper for the upper layer, the middle paper for the middle layer, The lower paper is the lower layer. You must pay attention to the layer of paper when using it. If the paper is used in the upper layer, there is no copy function.
Material suitability
Plate selection: There are many types of plates, depending on:
The plates are divided into aluminum, zinc, stone, resin, nylon, cardboard and glass.
The structure is divided into single layer, double layer and multiple layers.
The plate making method is divided into manual, transfer, optical, and electronic.
The shape is divided into a flat convex, a flat surface, and a flat concave.
The grinding method is divided into ball milling, brush grinding, chemical grinding, electronic chemical grinding, and sand blasting.
The layout is divided into chemical and anode.
The film coating method is divided into self-coating, machine coating, and pre-coating.
The coated surface of the film is divided into one side and two sides.
The printing plate is divided into a positive type and a negative type.
The film processing method is divided into a film-adding type and a film-reducing type.
The printer uses a proofing machine, a quick machine, a sheet machine, a rotary machine, and a transaction printing machine.
From the above, there are quite a few types. In fact, at present, many printing plates used in Taiwan's lithographic printing plants are only pre-coated and positive-type, referred to as the PS version. The quality printed on this type of plate is quite high, and the plate making process is simple, as long as it is automatically processed in the platen machine, it can be completed in a few minutes. There are still a few books in the home-style printing house, using zinc or aluminum plates, making a protein version for a small amount of printed plates.
Paper selection: There are three choices of type, quality and weight. Common in terms of types
Printing paper: securities paper, printing paper, magazine paper, news paper, mold paper, coated paper, Bible paper, Daolin paper, etc.
Writing paper: book paper, book paper, miscellaneous paper, typed paper, card paper, drawing paper.
Picture paper: watercolor paper, special paper, ordinary paper, charcoal paper, sea drawings.
Packaging paper: kraft paper, sulphuric acid paper, match paper, rust-proof paper, cigarette paper, fruit paper, sulfuric acid paper, cellophane, wax paper.
Filter paper: chemical analysis paper, insulating paper.
Absorbing paper: blotting paper, carbon paper, napkin, toilet paper.
Specially processed paper: back carbon base paper, photographic base paper, fiber paper.
Cardboard: eight categories of yellow cardboard, white cardboard, core cardboard, corrugated cardboard, ticket board, and construction board.
Seeing that there are so many kinds of things on the top, I really don't know how to make choices at one time. In fact, it is not difficult, because the most commonly used ones are the first type of Daolin paper, mold paper and coated paper. In terms of quality selection, Daolin paper has all-wood forest, ivory forest, white Daolin and color road forest paper. The mold paper has white mold, beige mold and color paper. Coated paper has mirror copper plate, super-light double copper, special double copper, double-sided copper plate, single-sided copper plate, snow surface copper plate and cloth coated paper. There are also choices such as printed paper, magazine paper, calendar paper and advanced seasoning paper. In fact, only a few of them are often contacted.
In addition, the weight of the paper, there are two commonly used weighting methods: one is the basis weight, is more common in the world, is the weight of one meter square paper, placed on the electronic balance, in grams, That is gsm, or "mipping amount". One is the weight, the weight weighed by a 500-piece paper, that is, pounds/order. It is used in both domestic and domestic, but for the sake of convenience, it is easier to use the basis weight, so that the paper of the same thickness is different from the pounds of 25x35" in the 31x43", which is often easy to be confused.
Most papers have a basis weight of 60~100GSM, coated papers range from 80~190GSM, and papermaking has as low as 45gsm. Just use the purpose, purpose, function and characteristics before use. It is not difficult. In addition, paper has a close relationship with humidity. First of all, we must know that the paper is a slurry consisting of 99% water, 0.5 to 1% cellulose, filler and gum, referred to as pulp, and then sent to the paper machine, long strip The funnel spreads the pulp on the moving wire mesh to filter out most of the water, and then squeezes the excess water through the hot pressing wheel and scalds it to make paper. After the above brief description, it can be known that the paper has the distinction of "mesh and non-mesh", the mesh surface is thicker, and the non-mesh surface is flat. At the same time, there will be a "silk flow", that is, the arrangement of the fibers in the direction of the strip, which directly affects the paper, and the phenomenon of bending after the damp is closely related to the binding of the book. If the filament of the paper runs along the long side, the edge of the book will be straight, otherwise it will be extremely flexible.
Ink selection: The lithographic inks are mostly transparent four primary inks. There are not many choices in color printing, and most of them are gold and silver. On the contrary, there is more selectivity in color printing, and there are many options for special printing in special printing, such as: fluorescent ink, pearl ink, blackening, magnetic ink, ultraviolet ink, etc. There are also transparent and opaque ink points. Nowadays, many large printing houses use large-capacity four-color transparent inks, and use high-pressure pump automatic conveying tubes to send ink directly to the printing machine. The staff will not be too troublesome and do not need to adjust the ink. It's easy.
Environmental suitability
Lighting conditions:
Lighting standard - 204.4 +/- 43.6 呎 candlelight.
The color temperature of the light source is 5,000°K for viewing originals and 7,500°K for color comparison during printing.
The color appearance index is -90~100.
Illumination geometry - should minimize the reflected light from the surrounding walls.
The transmission is marked with a standard of 409 +/- 88 呎 candlelight.
Wall color: It should be based on the principle of light gray, medium dark blue or green. It is not suitable to use warm colors such as red, orange and yellow. Because the latter is easy to make the staff feel irritated and easy to feel aversion to work.
Temperature control: The temperature in the lithographic workplace must be controlled between 23 and 25 ° C, so that personnel can work and operate various machines and equipment in a comfortable and ideal environment, and also extend the life of the machine.
Humidity control: The humidity in the lithographic workplace must be maintained between RH 55~60%. The high humidity in the air will lead to unstable product quality, easy failure of electronic devices, easy expansion and contraction of paper, processing and binding deformation, photosensitive materials and Problems such as mildew in the camera lens appear. These problems will affect the effect, increase production costs and so on.
Air quality: The air quality in the working environment does not mean the installation of air-conditioning devices, but refers to the control of the temperature and humidity of the air. More importantly, it introduces fresh air into the room and appropriately replaces the fresh air in the room. Nowadays, many separate air-conditioners only use the air in the room to be cold and have no ventilation function. This will easily cause indoor air pollution, which will lead to physical discomfort, dizziness and infection of the upper respiratory tract.
Wastewater treatment: Some chemicals are used in the lithographic workshop, so some wastewater is generated, which will have to be properly treated to avoid environmental problems.
Noise control: The noise that a person can tolerate is about 80 decibels. In the printing workplace, the places where noise is easy to generate are mostly printing houses. Therefore, the personnel working in this environment must pay attention to the maximum amount of noise. Below 75 decibels is preferred. In some print yards, when using commercial rotary presses, separate compartments are used and sound-absorbing panels are placed on the ceiling to absorb most of the noise and meet environmental requirements.
Storage environment: In addition to the temperature and humidity, the storage of materials should also pay attention to the handling conditions, improper handling, and unsuitable items, even if there is a good storage environment, it will be damaged. Therefore, the most important principle should be the period of validity, especially various chemicals.
Printing and paper
Poster: 100 pounds to 180 pounds of single or double coated paper, in eight (B4), four open, split, chrysanthemum or full open form.
Flyer: 60 to 150 pounds of single or double coated paper, in the form of 32 open (B6), 16 open (B5), chrysanthemum 16 open (A5), eight open (B4) or chrysanthemum open (A4).
Instructions: 100 pounds to 180 pounds of double-coated coated paper, into the chrysanthemum 16 open (A5), 32 open (B6) chrysanthemum eight open (A4), 16 open (B5), single, double, three to six fold booklet form.
Catalogue: 100-pound to 300-pound double-copper or other paper, in the form of a daisy (A4), 16 (B5) single, or folded.
Books: 60 to 150 pounds of double-copper, molded, or Daolin paper, 32 open (B6), 16 open (B5), chrysanthemum 16 open (A5), eight open (B4) or chrysanthemum open (A4 )form.
Magazine: 60 to 150 pounds of double-copper, Dowling, or stenciled paper, 32 open (B6), 16 open (B5), chrysanthemum 16 open (A5), eight open (B4) or chrysanthemum (open) A4) Form.
Calendar: 60 lbs to 200 lbs of double-coated coated paper, from 64 to off.
Packing: 60 pounds to 200 pounds of cowhide, molded, double-coated coated paper, depending on the package content.
Others: Newspapers are white newspapers, and self-adhesive papers include double-copper plates, mold paper, PVC, OPP and many other materials.
Printing and life
Check: engraving gravure (male head), sheet lithography (shading), letterpress (flow number, magnetic number).
Calendar: Zhang page lithography.
Towel: Screen printing.
Fruit: inkjet printing.
Toothpaste: Rubber letterpress printing.
Toothbrush handle: hot stamping gold foil.
Fabric: Screen printing.
Tickets: Sheet lithograph for shading, border printing, letterpress as the serial number.
Stock: Sheet lithograph for border, shading printing, letterpress for dark printing, computer laser printer for shareholder name, barcode and other printing.
Credit card, cash card: lithographic card printing or stencil printing, as well as embossed printing.
Cigarette: letterpress printing.
Cigarette box: sheet lithography, rotogravure printing.
Paper cup: rubber letterpress printing.
Tray: Most of the color is rubber letterpress printing, and the color temple is mostly sheet lithography.
Newspaper: Rotary lithography.
Notebook: Sheet or rotary lithography.
Marriage card: hot stamping, silver or printing in letterpress, lithography, screen printing, etc.
Stickers: letterpress or screen.
Banknotes: engraved gravure borders, sheet lithographic shading, letterpress printing serial numbers.
Plastic bag, aluminum foil bag: rotogravure.
Christmas card: sheet lithography.
Computer Report Paper: Transaction lithography or transaction resin letterpress printing.
Board: Screen printing.
Hardcover book cover: hot stamping, copperplate printing, lithographic color printing, and later glazing processing.
Nameplate: Photographic dyeing, corrosion lacquering.
Wallpaper: printing methods such as rubber letterpress, screen, lithography or rotogravure.
Surface: Pad printing.
Napkin: Rubber letterpress printing.
Magazine: lithographic printing with a small circulation, and a circular lithography or photo-rotary gravure printing at a large circulation.