FR2614234A1 - Method for producing, on a rotary printing press with a spool, a brochure with a high number of pages in the form of a catalogue, with leaves offset in a single operation - Google Patents

Abstract

Method for producing, on a rotary printing press with a spool, a brochure with a high number of pages in the form of a catalogue, with leaves offset, in a single operation, characterised in that it consists, at the output of the printing units, in cutting strips of various breadths with decreasing widths with respect to the biggest one 1-1' 2-2' 3-3', of superimposing them in an even decreasing order, in an irregular order or in a mixed order, in making a second fold P2 along the line parallel to their various widths and then a new central fold P3 or offset fold P3' making it possible to obtain additional leaves, perpendicular to the fold 2. The stapling (binding) operation known per se allows, due to the cut (of the trimming type), the fold 2 to be opened on the 3 sides.

Description

The present invention makes it possible to produce on a rotary press a
industrially a brochure with a high number of pages in form
directory (panes offset) in a single operation.

This results in comparison with known methods of producing directories
the deletion of successive stages in printing of several sheets
flat drawn independently, folding on machines independent of
these sheets flat and the elimination of several positions on the
insert to assemble the sheets produced in printing and folding
independently of each other, or of several notebooks at different
formats drawn independently of each other on a rotary press and then placed on several inserting machine positions.

To do this, the operation is performed on the folder, leaving the groups
press printers. To obtain this form of repertoire, with reference to figures let 2, cut out the full width of printed paper into g strips. Having a width of different widths (1-1 ') (2-2') (3-3 ') ...

decreasing with respect to the largest to obtain offset, regular, irregular or mixed shutters at one or both ends.

The maximum printing width of the press allows you to decide the number of possible strips, therefore the number of pages and the format of the book, from the smallest section to the largest. These bands can go on a rotary press for example from 2 to 10. Figures 1 and 2 attached are shown with 3 bands @ and regular progressive flaps. These strips, after having been cut into different widths as described above, are superimposed one above the other, step A in FIGS. 1 and 2, in terms of printing "accumulated" and then folded in their center along the line (P 2) parallel to their different widths in two equal parts which give the height of the work, operation called '2 nd fold' on rotary in terms of printing, constituting step B illustrated on Figures 1 and 2. In Figure 1 the fold (P 2) defines on both sides the offset flaps
being 1 cés in the same way (lob) (2b) (3b) on the front face and (la) (2a 3a) / on the rear face, the first fact to obtain flaps offset only on one side therefore on half of the work, is due to the decreasing cutting of the bands that on only one end. In figure 2, the fold (P 2) defines on both sides the offset flaps (lb) (2b) (3b) on one end and (l'b) (2'b) (3'b) on the other end (front face) and (la) (2a) (3a) on one end and (a) (2 ' at)
these sections being placed in the same way as the flaps on the front face
(3'a) on the other end (rear face) (the fact of obtaining staggered flaps on both sides, therefore on the two halves of the work is due to the centering of the cut strips of different widths when superimposed or "accumulation".

We obtain irregular progressive shutters by cutting the full printing width into strips of irregularly decreasing widths, we obtain shutters of different dimensions mixed by cutting strips at different widths and superimposing them in a non-decreasing order.

After having undergone the fold operation (P 2) as described above, the strips are. then folded by a central fold (P 3) or offset (P 3 ') itself perpendicular to the fold (P 2) which gives the width of the structure, steps (C) or (C') illustrated in Figures 1 and 2. In FIG. 1, the central fold (P 3) step (C) makes it possible to obtain the progressive flaps (la) (2a) (3a) visible on the front face, closed work, the flaps (lb) (2b ) (3b) placed in the same way being inside on the rear side of these of the first half of the structure and visible open structure. The fold (P 3 '), step (C') has the advantage of obtaining an additional flap (1 ') which can be as large as desired, it is visible on the front face, the work closed and it is consisting of the second half of the structure and placed in front of the visible flaps of the first half of the structure (la) (2a) (3a). In Figure 2 the central fold (P 3), step (C) provides progressive shutters on the first and second half of the structure, on the first half of the front face, closed structure, the visible shutters (la) (2a) (3a), the shutters (lb) (2b) ( 3b) placed in the same way being inside on the rear side of these on the first half of the structure.

The open work in the middle will reveal its second half, on the front side the progressive shutters (l'b) (2'b) (3'b), the shutters (a) (2'a) (3 ' a) placed in the same way on the rear side of these on this second half.

The fold (P 3 '), step (C') has the advantage of doubling the number of progressive flaps visible on the front face, closed structure, and constituted by the flaps (l'b) (2'b) (3 ' b) of the front face of the second half of the structure placed in front of the flaps (la) (2a) (3a) constituting the first half of the structure as well as the flaps (lb) (2b) (3b) placed in the same way on the rear side of these visible open work in the middle. The flaps (a) (2'a) (3'a) being placed in the same way as the flaps (l'b) (2'b) (3'b) on the rear side thereof on the second half of the book.

 The product thus obtained is then stapled in the traditional way by 2 metal stitches or square back glued and finished by a cut (type rogne) on the 3 sides, thus achieving the opening of the fold (P 2). This process can be adapted to all forms of advertising brochures and magazines.

The invention is not limited to the embodiment described, the largest flap being able to be seen with the work closed, the small progressive or non-mixed or mixed flaps being inside. The modification relates to the order of accumulation of the strips after cutting or to the direction of the fold (P 2) contrary to what is illustrated in FIGS. 1 and 2.

Claims (1)

 RECOMMENDATIONS ! / Method for producing a brochure with rotary spool with a high number of pages in the form of a directory, offset flaps, in a single operation, characterized in that it consists, upon leaving the printing units, of cutting strips of different widths in decreasing widths relative to the largest (1-1 ') (2-2') (3-3 '), to superimpose them in a decreasing order regular, irregular or in a mixed order, to operate a second fold (P 2) along the line parallel to their different widths and then a new central fold (P 3) or offset (P 3 ') allowing additional flaps to be obtained, perpendicular to the fold (2). The broaching operation known per se allows by the cut (cropped type) at the 3 sides the opening of the fold (2).