Abstract:
There is described a device (1) for offline inspection and color measurement of printed sheets, especially printed sheets for the production of banknotes and like printed securities, comprising (i) a console (10) having a supporting surface (10a) for supporting a sample printed sheet (S), (ii) a multipurpose measuring apparatus (20), which multipurpose measuring apparatus (20) comprises multiple sensors (22, 23) including at least one camera (22) for taking images of selected portions of the sample printed sheet (S) and a color measurement sensor (23) for performing spectrophotometric, colorimetric, and/or densitometric measurements at selected locations on the sample printed sheet (S), (iii) a display (30) for displaying the images taken by the camera (22) and the measurements performed by the color measurement sensor (23), and (iv) a control and processing unit (40) coupled to the multipurpose measuring apparatus (20) and the display (30). The device (1) comprises a moveable sensor beam (200) housing the multipurpose measuring apparatus (20), which moveable sensor beam (200) is displaceable along an x-axis over the supporting surface (10a) of the console (10) and over the entire surface of the sample printed sheet (S) located on the supporting surface (10a), the multiple sensors (22, 23) being mounted on a common sensor head (21) which is displaceable within the moveable sensor beam (200) along a y-axis so that the multipurpose measuring apparatus (20) can selectively take images of selected portions of the sample printed sheet (S) by means of the camera (22) or perform measurements at selected locations on the sample printed sheet (S) by means of the color measurement sensor (23). The control and processing unit (40) is configured to control displacement of the moveable sensor beam (200) along the x-axis and of the sensor head (21) along the y-axis.
Abstract:
There is described a method for processing stacks of sheets (SS) into bundles (5) of securities, in particular banknote bundles, the method comprising the steps of cutting successive stacks of sheets (SS), each carrying an array of multiple security prints arranged in a matrix of rows and columns, into successive sets of bundle strips (S; S*), and cutting the successive set of bundle strips (S; S*) into successive sets (2) of consecutive bundles (5) of securities. This method further comprises the step of counting the number of substrates within each bundle strip (S; S*) prior to cutting thereof into the successive sets (2) of consecutive bundles (5). Such counting comprises taking at least one image (I) of a at least a portion of a longitudinal side (10) of the bundle strip (S; S*) while the bundle strip (S; S*) is being displaced along a direction of displacement (A) which is parallel to the longitudinal side (10) of the bundle strips (S; S*), and processing the said at least one image (I) to derive a substrate count of the substrates within the bundle strip (S; S*). Also described in a system for carrying out this method.
Abstract translation:中描述了一种方法,用于处理片材(SS)的堆叠成束(5)的证券,特别是纸币捆,包括切割片材的连续堆叠(SS)的步骤的方法,每个携带多个证券印刷品的阵列布置 以行和列,成连续集合捆条的矩阵(S; S *),以及切割所述连续组捆条的(S,S *)转换成连续组(2)的连续捆(5)的证券。 此方法还包括每个捆条内计数基板的数量的步骤;之前它们切入连续组连续捆的(2)(5)(S S *)。 搜索计数包括取束条的纵向边(10)的至少一部分的至少一个图像(I)(S,S *),而该束条(S; S *)被沿着一个方向位移 位移(A)所有的平行于沿片材(SS)的堆被切割成捆条的方向上的(S,S *),以及处理所述至少一个图像(I)导出的基板计数 束条内的基板(S; S *)。 因此,在一个系统中,说明用于实现该方法
Abstract:
There is described a sheet-fed or web-fed screen printing press, especially for the production of banknotes and like securities, comprising an impression cylinder (2a), a first screen printing unit (2b) cooperating with the impression cylinder (2a) for applying a first ink pattern (A) onto successive sheets or web portions, at least a second screen printing unit (2c) cooperating with the impression cylinder (2a) for applying a second ink pattern (B) onto the successive sheets or web portions, which second screen printing unit (2c) is located downstream of the first screen printing unit (2b) with respect to a direction of rotation of the impression cylinder (2a), and an intermediate drying unit (10) located between the first and second screen printing units (2b, 2c). The intermediate drying unit (10) is adapted to perform superficial drying of the first ink pattern (A) applied by the first screen printing unit (2b) before application of the second ink pattern (B) by the second screen printing unit (2c), which superficial drying involves only the drying of an outer superficial portion (S) of the first ink pattern (A). Preferably, the second screen printing unit (2c) is adapted to apply the second ink pattern (B) in close proximity to the first ink pattern (A) or at least in a partially overlapping manner onto the first ink pattern (A).
Abstract:
There is described a method for applying foil material (200) onto successive sheets (S), especially sheets for the production of securities, such as banknotes. In a first step, individual sheets (S) are transported in succession along a sheet transport path. In a second step, at least one continuous band of foil material (200) is applied onto the individual sheets (S) along a direction substantially parallel to a direction of displacement (A) of the individual sheets, thereby forming a continuous flow of sheets linked to one another by the said at least one continuous band of foil material (200). In a third step, the said at least one continuous band of foil material (200) is cut by means of a laser beam (L) such that the continuous flow of sheets is again separated into individual sheets (S) with portions of foil material (200*) remaining on the sheet. The cutting is performed at positions located on the sheets (S) such that said portions of foil material (200*) remaining on the sheets do not extend beyond leading and trailing edges of the sheets (S). Waste portions (205) of said at least one continuous band of foil material (200) that are not to remain on the sheets (S) are seized prior to cutting by the laser beam (L) and are held throughout the cutting process. There is also described an installation for carrying out the above method.
Abstract:
There is described a sheet-fed printing press for numbering and varnishing of security documents, especially banknotes, including: - a sheet-feeder (01) for feeding in succession printed material in the form of individual sheets carrying multiple security imprints ; - a numbering group (02) comprising at least one numbering unit (21, 22) for numbering the sheets ; - a varnishing group (03) located downstream of the numbering group (02) for applying varnish onto recto and verso sides of said sheets, the varnishing group (03) comprising at least a first varnishing unit (31) for applying varnish on the recto side of the sheets and at least a second varnishing unit (32) for applying varnish on the verso side of the sheets ; and - a sheet-delivery system (04) for collecting varnished sheets coming from the varnishing group (03), the numbering group (02) being coupled to the varnishing group (03) by means of an intermediate sheet gripper system (05) comprising space-apart gripper bars for holding the sheets by a leading edge of the sheets and transporting the sheets from the numbering group (02) to the varnishing group (03).
Abstract:
There is described an impression cylinder (01) for intaglio printing of security documents, especially banknotes, comprising a cylinder body (10) carrying at least one blanket (20) on its circumference, and a packing (30) disposed between the cylinder body (10) and the blanket (20). The packing (30) exhibits at least one depression (40) whose location is selected to correspond to the location of at least a selected portion of a corresponding security element (50) having optical and/or structural properties to be preserved, which security element (50) is provided or exposed on a backside (60b) of a substrate (60) to be supported against the blanket (20) during intaglio printing, the said at least one depression (40) being designed to lead to a local reduction of the printing pressure at the location of the said at least selected portion of the corresponding security element (50).
Abstract:
There is described an inspection system (10) for inspecting the quality of printed sheets being transported by a sheet conveyor system comprising at least one sheet gripper system (3a, 3b) including a plurality of spaced-apart gripper bars (32) for holding the printed sheets by a leading edge thereof. The inspection system (10) is placed along the path of the at least one sheet gripper system (3a, 3b) transporting the printed sheets and comprises an optical quality control apparatus for carrying out inspection of a first side of the printed sheets while the printed sheets are being transported by the sheet gripper system (3b). The optical quality control apparatus includes a line camera (11) for scanning the first side of the printed sheets. The inspection system (10) further comprises a suction roller (50) that is placed in front of the optical path (B) of the line camera (11) along the path (A) of the printed sheets being transported by the sheet gripper system (3b), which suction roller (50) contacts a second side of the printed sheets opposite to the first side which is being scanned by the line camera (11), and a suction box (60) located immediately before the suction roller (50) and cooperating with the second side of the printed sheets for aspirating at least a portion of the second side of the printed sheets against a substantially flat surface (60a) of the suction box (60) before contacting the suction roller (50).
Abstract:
There is described an inspection system (10) for inspecting the quality of printed sheets which are transported by a sheet conveyor system comprising at least one sheet gripper system (3a, 3b) including a plurality of spaced-apart gripper bars (32) for holding the printed sheets by a leading edge thereof. The inspection system (10) comprises an optical quality control apparatus for carrying out inspection of a first side of the printed sheets while the printed sheets are being transported by the sheet gripper system (3b). The optical quality control apparatus includes a line camera (11 ) for scanning the first side of the printed sheets at an inspection location which is situated at a location proximate to a portion of the sheet gripper system (3b) where the gripper bars (32) transporting the printed sheets undergo a change of direction of displacement while the printed sheets are still being scanned by the line camera (11 ). The inspection system (10) further comprises a suction roller (50) that is placed in front of the optical path (B) of the line camera (11 ) along the path (A) of the printed sheets being transported by the sheet gripper system (3b), which suction roller (50) contacts a second side of the printed sheets opposite to the first side which is being scanned by the line camera (11 ), the suction roller (50) being driven at a selected circumferential speed to drive successive portions of the printed sheets being inspected by the quality control apparatus at a determined and controlled speed past the line camera (11 ).
Abstract:
The sheet-fed or web-fed printing machine comprises a main unit (1), at least one mobile carriage (2) adapted to be coupled to the main unit for cooperation therewith during printing operations and to be moved away from the main unit during maintenance operations, a control unit for controlling displacement of said mobile carriage toward and away from said main unit, and an access zone (9, 9') surrounding at least partly the mobile carriage for allowing a human operator to get access to the main unit and mobile carriage, which access zone lies outside of the displacement path (10) of the mobile carriage. The printing machine further comprises detection means (11) for monitoring the access zone and detecting presence of a human operator within the access zone. The control unit is operatively connected to the detection means so as to interrupt or prevent displacement of the mobile carriage in case presence of a human operator is detected within the access zone by the detection means and before the human operator penetrates in the displacement path of the mobile carriage.