公开(公告)号：WO2016071870A1

公开(公告)日：2016-05-12

申请号：PCT/IB2015/058575

申请日：2015-11-06

Applicant: KBA-NOTASYS SA

Inventor： SCHAEDE, Johannes Georg

IPC: B41F7/06 ,  B41F7/08 ,  B41F7/12

CPC classification number: B41F7/06 ,  B41F7/00 ,  B41F7/08 ,  B41F7/12 ,  B41F21/08

Abstract: There is described a recto-verso printing press (100*) adapted to carry out simultaneous recto-verso printing of sheets, the printing press (100*) comprising a main printing group (5, 6, 15, 16, 25, 26) with first and second printing cylinders (5, 6) cooperating with one another to form a first printing nip between the first and second printing cylinders (5, 6) where first and second sides of sheets are simultaneously printed, the first printing cylinder (5) acting as a sheet conveying cylinder of the main printing group (5, 6, 15, 16, 25, 26). The printing press (100*) further comprises an additional printing group (7, 8, 17, 18, 27, 28) with third and fourth printing cylinders (7, 8) cooperating with one another to form a second printing nip between the third and fourth printing cylinders (7, 8) where the first and second sides of the sheets are simultaneously printed, the third printing cylinder (7) acting as a sheet conveying cylinder of the additional printing group (7, 8, 17, 18, 27, 28). The main printing group (5, 6, 15, 16, 25, 26) and the additional printing group (7, 8, 7, 18, 27, 28) are coupled to one another by means of an intermediate sheet conveying system comprising one or more sheet-transfer cylinders (10, 10', 10'') interposed between the first and third printing cylinders (5, 7).

Abstract translation: 描述了适用于执行纸张的同时正面印刷的正压印刷机（100 *），包括主打印组（5,6,15,16,25,26）的印刷机（100 *）， 其中第一和第二印刷滚筒（5,6）彼此配合以在第一和第二印刷滚筒（5,6）之间形成第一印刷辊隙，其中片材的第一和第二侧面被同时印刷，第一印刷滚筒（5） ）作为主打印组（5,6,15,16,25,26）的纸张传送滚筒。 印刷机（100 *）还包括具有彼此配合的第三和第四印刷滚筒（7,8）的附加印刷组（7,8,17,18,27,28），以在第三印刷辊 和第四印刷滚筒（7,8），其中片材的第一和第二面同时印刷，作为附加印刷组（7,8,17,18,27）的纸张传送滚筒的第三印刷滚筒（7） ，28）。 主打印组（5,6,13,16,25,26）和附加打印组（7,8,7,18,27,28）通过中间纸张传送系统彼此联接，所述中间纸张传送系统包括一个 或多个插入在第一和第三印刷滚筒（5,7）之间的片材传送滚筒（10,10'，10“）。

公开(公告)号：WO2015118447A2

公开(公告)日：2015-08-13

申请号：PCT/IB2015/050817

申请日：2015-02-03

Applicant: KBA-NOTASYS SA

Inventor： SCHAEDE, Johannes Georg

CPC classification number: B41F31/20 ,  B41F5/18 ,  B41F11/02 ,  B41F31/00 ,  B41F31/18 ,  B41K3/126

Abstract: There is described a letterpress printing press, in particular a numbering press, comprising a printing group (50) with at least a first letterpress (e.g. numbering) cylinder (51) and a second letterpress cylinder (52) which are inked by an associated inking system (60, 71, 72, 81, 81a, 81b, 82, 82a, 82b). The inking system (60, 71, 72, 81, 81a, 81b, 82, 82a, 82b) comprises (i) a first inking device (81) supplying ink to a first chablon cylinder (71), (ii) at least a second inking device (82) supplying ink to a second chablon cylinder (72), and (iii) an ink-collecting cylinder (60) contacting the first and second chablon cylinders (71,72) and the first and second letterpress cylinders (51, 52). The ink-collecting cylinder (60) collects a first ink pattern (A, D) from the first chablon cylinder (71) and a second ink pattern (B, C) from the second chablon cylinder (72). As a result, a first multicolour pattern of inks (A-D) is formed on the ink-collecting cylinder (60), which first multicolour pattern of inks (A-D) is transferred onto the first letterpress cylinder (51). The ink-collecting cylinder (60) further collects a third ink pattern (A*, D*) from the first chablon cylinder (71) and a fourth ink pattern (B*, C*) from the second chablon cylinder (72), thereby forming a second multicolour pattern of inks (A*-D*) on the ink-collecting cylinder (60), which second multicolour pattern of inks (A*-D*) is transferred onto the second letterpress cylinder (52).

Abstract translation: 描述了一种凸版印刷机，特别是编号压机，其包括具有至少第一凸版印刷（例如编号）圆筒（51）和第二凸版滚筒（52）的印刷组（50），所述印刷组由相关联的着色 系统（60,71,72,81,81a，81b，82,82a，82b）。 上墨系统（60,71,72,81,81a，81b，82,82a，82b）包括（i）将墨水供应到第一刻字滚筒（71）的第一上墨装置（81），（ii）至少一个 第二上墨装置（82）将油墨供应到第二模版滚筒（72），和（iii）墨水收集圆筒（60），其与第一和第二模版滚筒（71,72）和第一和第二凸版滚筒（51）接触 ，52）。 墨水收集圆筒（60）从第二模版滚筒（71）收集第一墨水图案（A，D）和从第二模版滚筒（72）收集第二墨水图案（B，C）。 结果，在墨水收集滚筒（60）上形成第一多色油墨（A-D），该油墨的第一多色图案（A-D）被转印到第一凸版滚筒（51）上。 墨水收集滚筒（60）还进一步从第一模版滚筒（71）收集第三油墨图案（A *，D *）和来自第二模版滚筒（72）的第四墨水图案（B *，C *）， 从而在墨水收集滚筒（60）上形成油墨（A * -D *）的第二多色图案，该第二多色油墨图案（A * -D *）被转印到第二凸版滚筒（52）上。

公开(公告)号：WO2015022612A1

公开(公告)日：2015-02-19

申请号：PCT/IB2014/063806

申请日：2014-08-08

Applicant: KBA-NOTASYS SA

Inventor： SCHAEDE, Johannes Georg

IPC: B32B38/04 ,  B32B38/06 ,  B42D25/29

CPC classification number: B32B37/18 ,  B29C39/003 ,  B29C39/10 ,  B29C69/001 ,  B29D11/00442 ,  B29K2711/12 ,  B29K2995/0026 ,  B29L2017/00 ,  B32B3/14 ,  B32B9/06 ,  B32B38/0004 ,  B32B38/04 ,  B32B38/06 ,  B32B2038/042 ,  B32B2250/02 ,  B32B2305/347 ,  B32B2307/412 ,  B32B2317/12 ,  B32B2554/00 ,  B41F15/0836 ,  B41M3/14 ,  B42D25/29 ,  B42D25/324 ,  B42D25/351 ,  B42D25/425 ,  B42D25/46 ,  B42D25/475 ,  D21H21/40 ,  D21H25/06

Abstract: There is described a method of creating a transparent polymer window (W) with a field of lenses (L) in a security paper substrate (1), the method comprising the steps of (i) providing a security paper substrate (1), (ii) forming an opening (10) into the security paper substrate (1), (iii) laminating a transparent film (5; 5*) onto a first side (I) of the security paper substrate (1) in such a way as to close the opening (10) at one end, and (iv) filling the opening (10) with transparent polymer material (2). In one embodiment, the transparent film (5) comprises a field of lenses (L) and is laminated onto the first side (I) of the security paper substrate (1) in such a way as to form lenses (L) on the first side (I) of the security paper substrate (1) in register with the opening (10). In another embodiment, the field of lenses (L) is replicated into the transparent polymer material (2) applied in the opening (10) in such a way as to form lenses (L) on a second side (II) of the security paper substrate (1), opposite to the first side (I), in register with the opening (10). Also described is a device designed to fill the opening (10) formed into the security paper substrate (1) with the transparent polymer material (2) and a processing machine comprising the same.

Abstract translation: 描述了在安全纸基材（1）中产生具有透镜领域（L）的透明聚合物窗（W）的方法，所述方法包括以下步骤：（i）提供安全纸基材（1），（ ii）在安全纸基材（1）中形成开口（10），（iii）将透明膜（5; 5 *）层压到安全纸基材（1）的第一侧（I）上，方式如 在一端封闭开口（10），和（iv）用透明聚合物材料（2）填充开口（10）。 在一个实施例中，透明膜（5）包括透镜区域（L），并且以这样的方式层压到安全纸基板（1）的第一侧面（I）上，以便在第一 安全纸基板（1）的与开口（10）对齐的侧面（I）。 在另一个实施例中，透镜（L）的场被复制到施加在开口（10）中的透明聚合物材料（2）中，以便在安全纸的第二侧（II）上形成透镜（L） 衬底（1）与第一侧（I）相对，与开口（10）对准。 还描述了设计成用透明聚合物材料（2）填充形成安全纸基材（1）的开口（10）的装置和包括该开口的加工机。

公开(公告)号：WO2015107488A1

公开(公告)日：2015-07-23

申请号：PCT/IB2015/050337

申请日：2015-01-16

Applicant: KBA-NOTASYS SA

Inventor： BERTHON, Aurélie ,  SCHAEDE, Johannes Georg

IPC: D21H21/40 ,  B42D25/351 ,  B41M3/14

CPC classification number: B29C70/745 ,  B29D11/00278 ,  B29D11/00298 ,  B29K2711/10 ,  B29K2711/12 ,  B42D25/29 ,  B42D25/351 ,  B42D25/40 ,  D21H21/40

Abstract: There is described a method of creating a transparent window (W*) in a security, especially paper, substrate (1) for security printing applications, the method comprising the steps of (i) providing a security substrate (1), (ii) forming an opening (10*) into and through the security substrate (1), and (iii) filling the opening (10*) with transparent material (2) thereby forming the transparent window (W*). The filling of the opening (10*) with the transparent material (2) is carried out in a state where the opening (10*) is open on both sides of the security substrate (1) and extends through the security substrate (1), the filling of the opening (10*) including the application of a first side (I) of the security substrate (1) against a supporting surface (21A) of a supporting member (20', 21) in such a way as to block one side of the opening (10*), while the transparent material (2) is applied inside the opening (10*) from the other side (II) of the security substrate (1). Advantageously, the method further comprises the step of forming a field of lenses (L) on one side of the transparent window (W*), in particular by replicating the field of lenses (L) directly into the transparent material (2) filling the opening (10*). Also described is a suitable device designed to fill the opening (10*) with the transparent material (2).

Abstract translation: 描述了在用于安全打印应用的安全特别是纸张基底（1）中形成透明窗口（W *）的方法，所述方法包括以下步骤：（i）提供安全基板（1），（ii） 在安全基板（1）中形成开口（10 *），并且（iii）用透明材料（2）填充开口（10 *），从而形成透明窗口（W *）。 开口（10 *）与透明材料（2）的填充在开口（10 *）在安全基板（1）的两侧开口并且穿过安全基板（1）延伸的状态下进行， ，包括将安全基板（1）的第一侧（I）施加到支撑构件（20'，21）的支撑表面（21A）上的开口（10 *）的填充，其方式为 阻挡开口（10 *）的一侧，同时透明材料（2）从安全基板（1）的另一侧（II）施加在开口（10 *）的内部。 有利地，该方法还包括在透明窗口（W *）的一侧上形成透镜（L）场的步骤，特别是通过将透镜（L）的场直接复制到填充该透明窗口的透明材料（2）中 开（10 *）。 还描述了设计成用透明材料（2）填充开口（10 *）的合适的装置。

公开(公告)号：WO2014184738A2

公开(公告)日：2014-11-20

申请号：PCT/IB2014/061405

申请日：2014-05-13

Applicant: KBA-NOTASYS SA

Inventor： SCHAEDE, Johannes Georg ,  FELLMANN, Alexander

CPC classification number: B42D25/387 ,  B41M3/144 ,  B42D25/00 ,  B42D25/29 ,  B42D25/30 ,  B42D25/405 ,  B42D2035/14 ,  B42D2035/16 ,  B42D2035/24 ,  B42D2035/26

Abstract: There is described a printed security feature (1) provided onto a printable substrate, which security feature includes a printed area (100) consisting of a multiplicity of adjacent rectilinear and/or curvilinear elements (110, 120) printed with a given spatial frequency. The rectilinear and/or curvilinear elements are printed with at least first and second inks which exhibit the same or substantially the same optical appearance when illuminated with visible white light, such that the security feature produces a first graphical representation when illuminated with visible white light, at least the first ink being an ink which responds to non- visible light excitation by producing a characteristic optical response differentiating the first ink from the second ink. The security feature produces a second graphical representation when illuminated with non-visible light, which second graphical representation exhibits a distinctive two-dimensional graphic element (B) which is revealed only when the security feature is illuminated with non-visible light. Inside boundaries (160) of the distinctive two-dimensional graphic element, a part (P3) of the rectilinear and/or curvilinear elements is printed with a combination of the first and second inks, the rectilinear and/or curvilinear elements being subdivided, within that part, into first and second juxtaposed sections (110a, 110b, 120a, 120b) which are respectively printed with the first ink and with the second ink. Outside the boundaries of the distinctive two-dimensional graphic element, portions (P1, P2) of the rectilinear and/or curvilinear elements are printed with only one of the at least first and second inks. The at least first and second inks are printed in register one with respect to the other so that the boundaries of the distinctive two-dimensional graphic element are not visible when the security feature is illuminated with visible white light and the distinctive two-dimensional graphic element only becomes visible when the security feature is illuminated with non-visible light.

Abstract translation: 描述了提供在可印刷基板上的印刷安全特征（1），该安全特征包括由以给定空间频率打印的多个相邻的直线和/或曲线元件（110,120）组成的印刷区域（100）。 直线和/或曲线元件印刷至少第一和第二种油墨，当用可见的白光照亮时它们表现出相同或基本上相同的光学外观，使得安全特征在用可见白光照射时产生第一图形表示， 至少第一油墨是通过产生将第一油墨与第二油墨区分开的特征光学响应来响应于不可见光激发的油墨。 当用不可见光照亮时，安全特征产生第二图形表示，该第二图形表示呈现出独特的二维图形元素（B），仅在安全特征被不可见光照射时才被显示出来。 在独特的二维图形元素的边界（160）内，用第一和第二墨水的组合印刷直线和/或曲线元素的一部分（P3），将直线和/或曲线元素细分为 该部分分别分别分别印刷有第一墨水和第二墨水的第一和第二并列部分（110a，110b，120a，120b）。 在独特的二维图形元素的边界之外，直线和/或曲线元素的部分（P1，P2）仅印刷至少第一和第二墨水中的一种。 至少第一和第二墨水相对于另一墨水印刷成寄存器1，使得当用可见白光照亮安全特征时，不同的二维图形元素的边界是不可见的，并且独特的二维图形元素 当安全特征被不可见光照亮时，它才变得可见。

公开(公告)号：WO2014136092A1

公开(公告)日：2014-09-12

申请号：PCT/IB2014/059521

申请日：2014-03-07

Applicant: KBA-NOTASYS SA

Inventor： SCHAEDE, Johannes Georg

IPC: B41F13/10 ,  B41F13/11 ,  B41F7/02 ,  B41F9/02 ,  B41F5/02

CPC classification number: B41F11/02 ,  B41F5/02 ,  B41F7/025 ,  B41F9/021 ,  B41F13/10 ,  B41F13/11

Abstract: There is described a sheet-fed rotary printing press (100; 200; 300) for the production of banknotes and like securities comprising at least one printing form cylinder (115, 125; 215; 315, 325) having one or more segments. A nominal diameter (D) of the at least one printing form cylinder (115, 125; 215; 315, 325) substantially corresponds to an integer multiple of a reference diameter of a one-segment cylinder (103a; 103c;...) as used for printing onto super-format sheets exhibiting a standardized format with a width of the order of 820 mm and a length of the order of 700 mm. An axial length (AL) of the at least one printing form cylinder (115, 125; 215; 315, 325) is comparatively greater than a nominal axial length of a corresponding printing form cylinder as used for printing onto super-format sheets, by an amount such that the at least one printing form cylinder (115, 125; 215; 315, 325) is suitable for printing onto large-format sheets having a comparatively greater width (W) than the width of super- format sheets. Preferably, a circumferential length (SL) of each segment of the at least one printing form cylinder (115, 125; 215; 315, 325) is comparatively greater than a nominal circumferential length of each segment of a corresponding printing form cylinder as used for printing onto super-format sheets, by an amount such that the at least one printing form cylinder (115, 125; 215; 315, 325) is suitable for printing onto large-format sheets having a comparatively greater length (L) than the length of super-format sheets.

Abstract translation: 描述了用于生产包含至少一个具有一个或多个片段的至少一个印版的圆筒（115,125; 215; 315,325）的纸币和类似证券的单张纸旋转印刷机（100; 200; 300）。 所述至少一个印刷版滚筒（115,125; 215; 315,325）的公称直径（D）基本上对应于一段气缸（103a; 103c; ...）的参考直径的整数倍， 用于打印宽幅度为820mm，长度为700mm的标准格式的超格式纸张。 所述至少一个印版滚筒（115,125; 215; 315,325）的轴向长度（AL）相对大于用于打印到超格式纸张上的对应印版滚筒的标称轴向长度，通过 使得所述至少一个印刷版滚筒（115,125; 215; 315,325）适于打印到具有比超格式纸张的宽度更大的宽度（W）的大幅面纸张上的量。 优选地，所述至少一个印版滚筒（115,125; 215; 315,325）的每个部分的圆周长度（SL）相对大于用于相应印版形式圆柱体的每个部分的标称圆周长度 打印到超格式纸张上，其量使得至少一个印刷版滚筒（115,125; 215; 315,325）适于印刷到具有比长度（L）更长的长度（L）的大幅面纸张上 的超格式表。

公开(公告)号：EP3215366B1

公开(公告)日：2018-12-26

申请号：EP15797448.6

申请日：2015-11-06

Applicant: KBA-NotaSys SA

Inventor： SCHAEDE, Johannes Georg

IPC: B41F7/06 ,  B41F7/08 ,  B41F7/12

CPC classification number: B41F7/06 ,  B41F7/00 ,  B41F7/08 ,  B41F7/12 ,  B41F21/08

Abstract: There is described a recto-verso printing press (100*) adapted to carry out simultaneous recto-verso printing of sheets, the printing press (100*) comprising a main printing group (5, 6, 15, 16, 25, 26) with first and second printing cylinders (5, 6) cooperating with one another to form a first printing nip between the first and second printing cylinders (5, 6) where first and second sides of sheets are simultaneously printed, the first printing cylinder (5) acting as a sheet conveying cylinder of the main printing group (5, 6, 15, 16, 25, 26). The printing press (100*) further comprises an additional printing group (7, 8, 17, 18, 27, 28) with third and fourth printing cylinders (7, 8) cooperating with one another to form a second printing nip between the third and fourth printing cylinders (7, 8) where the first and second sides of the sheets are simultaneously printed, the third printing cylinder (7) acting as a sheet conveying cylinder of the additional printing group (7, 8, 17, 18, 27, 28). The main printing group (5, 6, 15, 16, 25, 26) and the additional printing group (7, 8, 17, 18, 27, 28) are coupled to one another by means of an intermediate sheet conveying system comprising one or more sheet-transfer cylinders (10, 10', 10") interposed between the first and third printing cylinders (5, 7).

公开(公告)号：EP3130468A3

公开(公告)日：2017-08-16

申请号：EP16186896.3

申请日：2011-05-12

Applicant: KBA-NotaSys SA

Inventor： SCHAEDE, Johannes Georg ,  GYGI, Matthias

IPC: B41F11/02 ,  B41F23/04 ,  B41F23/08 ,  B41F21/08 ,  B41F21/10 ,  B41F31/30 ,  B41F33/00 ,  B41M7/00 ,  B41M7/02 ,  B65H29/04

CPC classification number: B41F17/008 ,  B41F11/02 ,  B41F13/0032 ,  B41F21/08 ,  B41F21/10 ,  B41F23/0409 ,  B41F23/044 ,  B41F23/0453 ,  B41F23/0479 ,  B41F23/08 ,  B41F31/302 ,  B41F33/0036 ,  B41M7/0081 ,  B41M7/02 ,  B41P2217/11 ,  B65H29/042 ,  B65H2301/1321 ,  B65H2301/5111 ,  B65H2301/5114 ,  B65H2301/5144 ,  B65H2301/517 ,  B65H2402/10 ,  B65H2601/321 ,  B65H2701/1912 ,  B65H2801/31

Abstract: There is described a sheet-fed printing press for varnishing of security documents, including banknotes, comprising :
- a sheet-feeder (01) for feeding individual sheets in succession, which sheets carry multiple security imprints ;
- a varnishing group (03; 03*) for applying varnish onto recto and verso sides of the sheets, the varnishing group (03; 03*) comprising at least a first varnishing unit (31) to apply varnish on the recto side of the sheets and at least a second varnishing unit (32) to apply varnish on the verso side of the sheets ; and
- a sheet-delivery system (04) for collecting varnished sheets coming from the varnishing group (03; 03*).
The varnishing group (03; 03*) comprises at least one transfer cylinder or drum (35; 35, 36, 37) located between the varnishing group (03; 03*) and the sheet-delivery system (04), which at least one transfer cylinder or drum (35; 35, 36, 37) is designed as chill roller to cool down the varnished sheets or as an inspection cylinder or drum for carrying out inspection of the recto or verso side of the sheets.

Abstract translation: 描述了一种用于上清包括钞票的安全文件的单张纸印刷机，其包括： - 用于连续地供给单独纸张的纸张馈送器（01），所述纸张携带多个安全印记; - 用于在片材的正反面上施加清漆的上光组（03; 03 *），上清组（03; 03 *）包括至少第一上光单元（31）以在 薄片和至少第二上光单元（32），以在所述薄片的反面涂覆清漆; 和 - 用于收集来自上漆组（03; 03 *）的清漆片材的片材传送系统（04）。 上漆组（03; 03 *）包括位于上漆组（03; 03 *）和片材输送系统（04）之间的至少一个转印滚筒或鼓（35; 35,36,37），其至少 一个传送滚筒或滚筒（35; 35,36,37）设计为冷却滚筒以冷却上漆的纸张或作为检查滚筒或滚筒以检查纸张的正面或反面。

公开(公告)号：EP3130467A2

公开(公告)日：2017-02-15

申请号：EP16186882.3

申请日：2011-05-12

Applicant: KBA-NotaSys SA

Inventor： SCHAEDE, Johannes Georg ,  GYGI, Matthias

IPC: B41F11/02 ,  B41F13/00 ,  B41F21/08 ,  B41F21/10 ,  B41F23/04 ,  B41F23/08 ,  B41F31/30 ,  B41K3/12 ,  B41M7/02 ,  B65H29/00

Abstract: There is described a sheet-fed or web-fed printing press for numbering and varnishing of security documents, including banknotes, comprising :
- a numbering group (02) comprising at least one numbering unit (21, 22) for numbering printed material in the form of individual sheets or successive portions of a continuous web carrying multiple security imprints ; and
- a varnishing group (03; 03*) located downstream of the numbering group (02) for applying varnish onto recto and verso sides of the printed material, the varnishing group (03; 03*) comprising at least a first varnishing unit (31) disposed above a path of the printed material to apply varnish on the recto side of the printed material and at least a second varnishing unit (32) disposed below the path of the printed material to apply varnish on the verso side of the printed material.

Abstract translation: 中描述了一种单张纸或卷筒纸印刷机进行编号和安全文件，包括钞票的上漆，包括： - 一个编号组（02）包括至少一个编号单元（21，22），用于在编号印刷材料 单独的片材或连续卷筒纸携带多个安全印记的连续部分的形式; 和 - 一个清漆组（03; 03 *），其位于用于施加清漆涂布书籍的右页和左页的打印材料，上漆组的两侧的编号组（02）的下游侧（03; 03 *），包括至少一个第一上光装置（ 31）（32）设置在所述印刷材料的路径的下方上方设置打印材料的路径至第二上光单元上的印刷材料的直肠侧和至少施加清漆到印刷材料的反面施加清漆 ，

公开(公告)号：EP1954498B1

公开(公告)日：2011-07-27

申请号：EP06831902.9

申请日：2006-11-22

Applicant: KBA-NotaSys SA

Inventor： SCHWITZKY, Volkmar Rolf ,  SCHAEDE, Johannes Georg

IPC: B41F33/00

CPC classification number: F16P3/14 ,  B41F31/302 ,  B41F33/0018 ,  F16P3/12 ,  F16P3/144

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.