Parts and accessories of printing machinery used for printing by

84.43 Printing machinery used for printin by means of plates, cylinders and other printing components of headmg 84. 2; other printers, copying machines and facsimile machines, whether or not combined; parts and accessories thereof (+). i - Printing machinery used for printin by means of plates, cylinders and other printing components of heading 84. 2 : f - - Offset printing machinery, reel-fed 8443.12 - - Offset printing machinery, sheet-fed, office type 8443.11 (usin sheets with one side not exceeding 22 cm and the other side not excee ing 36 cm in the unfolded state) f - - Other offset printing machinery 8443.14 - - Letterpress printing machinery, reel fed, excluding flexographic printing 8443.15 - - Letterpress printing machinery, other than reel fed, excluding flexographic 8443.13 printing - - Flexographic printing machinery 8443.17 - - Gravure printing machinery 8443.19 - - Other - Other printers, copying machines and facsimile machines, 8443.16 combined : whether or not 8443.3 1 - - Machines which perform two or more of the functions of printing, copying 8443.32 - - Other, ca 8443.39 - - Other - Parts and accessories : or facsimile transmission, capable of connecting to an automatic data processing machine or to a network Pable of connecting to an automatic data processing machine or to a networ 8443.91 - - Parts and accessories of printing machinery used for printin b means of plates, cylinders and other printrng components of heading 8$.4? 8443.99 - - Other This heading covers (1) all machines used for printing by means of the plates or cylinders of the previous heading, and (2) other printers, copyng machines and facsimile machines, whether or not combined. The heading includes machines for printing a re etitive desi , repetitive wording or overall colour on textiles, wallpaper, wrapping paper, rub er, plastics s eeting, linoleum, leather, etc. g t (I) PRINTING MACHINERY USED FOR PRINTING BY MEANS OF PLATES, CYLINDERS AND OTHER PRINTING COMPONENTS OF HEADING 84.42 The most common of these machines are rotary presses. In their simplest form, these presses usually consist of a cylinder with two semi-cylindrical lates (letter press), or of cylinders which may be either engraved ( w e rinting) or impressed foffset printing); rotary resses for colourlaced side by side. rinting are equipped wiEeverJgrinting cylinders, thelr inking rollers being p! Eince all the printing, pressing an inking mechanisms are rotary, these presses can be used for both continuous printin and sheet by sheet printing, in black or in colour, on single sides or on yratog presses can be divided into two sub-categories : both sides of the paper. several printing units on a (1) Reel-fed presses, in which some large rotary single &me, and which enable all the pa es periodical to be printed in one sequence of operations, so that, in g e pages are delivered, cut folded, assembled, stapled and stacked by various ancillary machines working i; conjunction with the printing machine. (2) Sheet-fed resses, in which the sheets are transported through the printing units by gripp.. Eheet-fed presses have a feeder, one or more printing units, and a delivery mec anism. In the feeder the sheets are taken fiom a pile, aligned, and forwarded to the printing unit. In the delivery mechanism the printed sheets are collected in a pile. This group also includes printing presses using a movable plate (or platen), and cylinder printing machines. The above printing resses (particularly the small or medium-sized rotary presses) can be fitted with a series of rna&mg-up units arranged side b side with the printin units, so that, starting fkom a single reel of pa er, complex products &.g, box shapes, pac giogs, labels, railway tickets) can be complete&n one single and continuous operation. L In addition to the typical types of printing machines, this heading also covers special machines such as : (i) Machines for printing tin foil boxes or other containers. (ii) Machines for printing clock or watch dials or other articles of special shapes. (iii) Machines for printing on corks, tubes, candles, etc. (iv) Machines for marking clothing. (v) Machines for printing book page signatures. (vi) Numbering, dating, etc., machines (other than hand-operated date and similar stam s of heading 96.11) operating with irons, bands of letters or figures, etc., whether or not ized. (vii) Certain small office printing machines which operate by means of printing type or by the offset process, and which are improperly referred to as "duplicatmg machmes" because their operating principles and appearance are similar to those of duplicating machines. This goup also includes colour printin machines, used to colour, after they have been first printed in black and white, special art e itions, playing cards, children's illustrations, etc., by means of stencils or stencil-plates, the colour being applled by brushes, rollers or by spraying. Machines for printing a repetitive design, repetitive words or overall colour on textiles, wallpaper, wrapping paper, linoleum, leather, etc., include : (1) Block printing machines in which blocks engraved with the design, generally in relief, are repeatedly pressed on the cloth, wallpaper, etc., as it passes thou the machine, thus producing a continuous design; the same machines are also used or printing separate designs (e.g., on scarves or handkerchiefs). P (2) Roller printing machines, usually consisting of a large central cylinder (pressure bowl) around the peri hery of which is placed a series of engraved colour rollers, each with its colour trough, R,isher roller, doctor blades, etc. (3) Screen printing machines. The material to be printed asses through the machine together with a stencil-screen band, the colour being applied Lough the stencil. (4) Warp printing machines which, before weaving, print a design on the sheet of parallel warp yarns unrolled fiom the warp beam. (5) Yarn printing machines. These produce colour effects on the yarn (or sometimes on the roving before it is spun into yarn). (11) OTHER PRINTERS, COPYING MACHINES AND FACSIMILE MACHINES, WRETHER OR NOT COMBINED This group covers : (A) Printers. This group includes apparatus for the rinting of text, characters or images on print media, other than those that are described in art (I) above. d' These apparatus accept data fiom various sources (e.g,, automatic data processing machines, flatbed desktop scanners, networks). Most Incorporate memory to store that data. The products of this heading may create the characters or images by means such as laser, ink-jet, dot matrix or t h e m 1 print processes. The two most common types of printers are : (1) Electrostatic printers, which employ a process that involves electrostatic charges, toner and light. A light source (e.g., a laser, a light-emitting diode) is used to cancel the charge at specific points on a positively charged photoconductive surface (usually a drum) leaving a osihvely charged lica of the image. The negatively charged toner is electrostabcal y am-acted to the %oconcluctive surface, reproducrng the original image. The toner is electrostatica ly transferred to the print medium, which has a stronger positive charge than the photoconductive surface, and the image is then fused to the print medium by applying pressure and heat. P f' (2) Inkjet printers. These machines place drops of ink onto a print medium to create an image. This heading includes printers presented separately for incorporation in or connection to other products of the nomenclature (e.g., receipt printers of cash registers of heading 84.70). (B) Copying machines. This group includes apparatus for the production of copies fiom original documents, such as : (1) DigitaI copiers in which the original document is scanned and a photosensitive surface (e.g., a charge-coupled device (CCD) or photo-diode sensing array) converts the optical image into digitally coded electrical signals that are stored in which operates in the same manner as the printers Explanatory Note, then uses that data to produce Original documents need only be scanned once to produce multi le copies, as the digtal representation of the image is stored in memory. Part (D) be ow describes such apparatus when capable of connecting to an automatic data processing machine or to a network. f (2) Photocopiers in which the optical image of the original document must be projected onto the photosensitive surface for each copy. The most common types are : (a) Electrostatic photocopying apparatus which operates either by reproducing the original image directly onto the copy (direct rocess) or by reproducing ,the original image via an intermediate onto the copy &direct process). In the direct rocess the optical image is projected onto a substrate (usually of paper) coate with, for example, zinc oxide or anthracene, charged with static electricity. After the latent image has been developed by means of a powdered dye, it is fixed to the substrate by heat treatment. In the indiiect After the latent image transferred onto paper by heat treatment. drum (orplate) coated charged with static electricity. of a owdered dye, it is eld and fixed to the R (b) Apparatus using chemical emulsion coatings in which the hotosensitive surface consists of an emulsion usually containing silver salts or fiazo compounds (the latter being designed for exposure to light with a high ultraviolet content). The developing and printing processes vary according to the nature of the emulsion and the type of apparatus (wet or dry developers, heat treatment, ammonia vapour, transfer techniques, etc.). This group also includes contact type photocopying apparatus and thermo-copying apparatus. (C) Facsimile machines. Facsimile (or fax) machines are for the transmission and reception of text or graphics over a network and for the printing of a reproduction of the original text or graphics. Part (D) below describes such apparatus when capable of performing a copying function. @) Combinations of printers, copying machines or facsimile machines. Machines which perform two or more of the functions of printing, co ying or facsimile transmission are generally referred to as multi-fhctional machines. T ese machines are capable of connecting to an automatic data processing machine or to a network. The criterion "ca able of connecting to an automatic data processing machine or to a network" is descn ed in the Subheadtng Explanatory Note below. g PARTS AND ACCESSORIES Sub'ect to the general provisions regarding the classification of parts (see the General Exp anatory Note to Section XVI), the heading also covers parts and accessories of the machines of this heading. t d This would include, for example, machines (whether or not presented separately for uses ancillary to printing exclusively designed to operate with printing machines and use during or after the printing operation for feeding, handling or further worlung the sheets or rolls of paper. Such machines, whch are usually separate from the printing machine itself, include : (I) Stock or ile elevators and paper trays or drawers, which hold the blank sheets ready to be (2) Automatic feeders, used for sheet by sheet printing. Their function is to feed sheets one by one, perfectly centred, into the machine. (3) Sheet delive mechanisms, similar in desi to feeders, but carrying out the reverse process (i-e.,t ey deliver and pile the printed s eets). X K" (4) Sorters, which stack and collate printed sheets of multi-page documents. (5) Folders,.gummers, perforators and staplers. These are offen used, at the delivery end of the printing machine, to fold and staple or stitch printed pages (of newspapers, folders, periodicals, etc.). If, however, they are not designed exclusively for use in conjunction with a printing machine, they are excluded (heading 84.40 or 84.41, as the case may be). (6) Serial numbering machines, small accessory machines operating with rolls of figures. These deposit metal powder on sheets as (7) Bronzing machines for the printing indus they emerge from the printing machine in whlc they have just been mordant-printed. "K This heading also includes drums and plates used in electrostatic photocopying apparatus, guide rollers and mounted oil supply pads. The heading also excludes : (a) Cylinder blankets and covers of textile fabric, rubberised textile fabric, felt, rubber, etc. (classified according to the constituent material). (b) Machinery for labelling bottles, cans, boxes, bags or other containers, and wrapping machinery (heading 84.22). (c) Machines with an ancill printing device, e.g., certain bag filling or packing machines (headin 84.22); certain m z i n e s for making up aper or aperboard (heading 84.41). If presented separatefy, the printing device remains classifietin this Lading provided it prints by one of the processes of the machines of this heading. (d) Anti-smudging spraying machines (heading 84.24). (e) Hectographic and stencil duplicating machines, and addressing machines (heading 84.72). (f) Pattern generating apparatus (heading 84.86). (g) Cameras for recording documents on microfilm,microfiche or other microforms (heading 90.06). (h) Ordinary photographic printing frames (heading 90.10). (ij) Drawing instruments of heading 90.17. (k) Hand-operated label embossers of heading 96.11. Subheading ExpIanatory Notes. Subheadings 8443.11,8443.12 and 8443.13 These subheadin s cover printing machinery in which the impression is obtained by means of a printing plate on which k e design is reproduced in the flat, i.e., in neither intaglio nor relief (offset rinting process). The formation of the unage ta be printed is based on the principle of the mutual re &ion of water and fatty substances. The printing, always performed on a rotary machine, is not obtaine!by direct contact of the printin medium on the material to be printed, but by intermediate transfer onto a rubber cylinder called a bl&et which, in turn, transfms the irna e onto the matter to be printed. The machnery of these subheadings is characterised by the presence of h e blanket and of a devlce used to continuously dam en the non- nnting arts of the printing plate which is fixed to a metal cylinder. Offset printing mac ines can be k d by roes or sheets. f, Subheadings 8443.14 and 8443.15 Letterpress printing is a process whereby the ink is transferred under pressure to the printing surface fiom the raised parts of the type. The type consists of individual characters, lines or image-bearing plates, all of the same height. These subheadings do not, however, cover flexographic printing machinery. Subheading 8443.16 Flexographic printing is a process employing the letterpress princi le for simple work (printing of ackagin , forms, leaflets, etc.), and in which the printing plate is ogrubber or thermoplasllc material gonded &ectly to the impression cylinder. These machines are simpler and lighter than other printing presses; the print continuous webs of paper in one or more colours, using an ink based on alcohol or other volatiz sol\-ents. Subheading 8443.17 In gravure printin ,the ink accumulated in different volumes in en aved or etched pa+ of fhe printing plate is transferre by pressure onto the surface to be printed. Ths o m of printing has ~ t sor~ginsin line engravin and etchin where a graver or an acid is used to incise lines of different depths in a polished copper p ate. The sur ace of the plate remains free of ink, which collects in the lines in sufficient quantity to yleld an impression. d k F= cylinder is used The,principle of gravure printing is similar to that of line engraving and etching. A KO instead of the plate. The image or signs are transferred onto a cyl~ndricalplate electrop ated with copper by mechanical or photochemcal means. Subheadings 8443.31 and 8443.32 The criterion " capable of connecting to an automatic data rocessing machine or to a network " denotes that the apparatus comprises all the components necessary or its connection to a network or an automatic data processing machine to be effected simply by attaching a cable. The capability to acc t the addition of a component (e.g., a "card") that would then allow the connection of a cable is not su icient to meet the terms of these subheadin s. Conversely, that the component to which a cable would be connected is present but inaccessible or ot erwise unable to effect a connection (e.g., swtches must first be set) is not sufficient to exclude goods from these subheadings. %