Mounting device for an electronic assembly

Abstract

Fastening device (200) for fastening an electronic assembly (221) to a base module (103); wherein the fastening device (200) comprises, - a carrier plate (211) of the electronic assembly (221) having at least one recess (301) between a mounting area (215) and a holding area (212) of the carrier plate (211); and - a support body (201) of the base module (103) having at least one groove (205) designed to receive the fastening area (215) of the support plate (211), and comprising at least one latch (320) movably attached to the support body (201), which is designed to be moved into the recess (301) to fasten the support plate (211) when the fastening area (215) of the support plate (211) is in the groove (205) of the support body (201), characterized in that - the carrier body (201) is a heat sink (201) of a printhead and - the basic module (103) is a printhead of a printing device (100).

Description

[0001] The invention relates to the efficient and reliable fastening of an electronic assembly to a base module according to the preamble of claim 1, as disclosed in German patent application DE 24 33 385 A1. In particular, the invention relates to the fastening of a control assembly to a printhead of a printing device.

[0002] Further fastening devices for electronic assemblies are known from JP S47-33 843 U and from WO 2018 / 118 036 A1.

[0003] A printing device, in particular an inkjet printing device, for printing on a recording medium can comprise one or more printheads, each with one or more nozzles. The nozzles are each configured to eject ink droplets to print pixels of a printed image onto the recording medium. The one or more printheads and the recording medium are moved relative to each other to ink pixels at different positions, particularly in different lines, on the recording medium, thus printing an image onto the recording medium.

[0004] The individual printheads are typically controlled and supplied with electrical energy via one or more control modules of the printing device to print an image onto a recording medium. During the installation of the one or more control modules and / or for maintenance purposes, it may be necessary to mount and / or dismount the individual control modules from the printheads. This can be relatively time-consuming.

[0005] This document addresses the technical problem of enabling the efficient and reliable mounting of an electronic assembly, in particular a control assembly, to a base module, especially a printhead. This problem is solved by the features of independent claim 1.

[0006] According to one aspect of the invention, a fastening device for attaching an electronic assembly to a base module is described. The fastening device comprises a carrier plate for the electronic assembly, wherein the carrier plate has at least one recess between a fastening area and a holding area of ​​the carrier plate. Furthermore, the fastening device comprises a support body for the base module, wherein the support body has at least one groove configured to receive the fastening area of ​​the carrier plate and includes at least one latch movably attached to the support body, which is configured to be moved into the recess to fasten the carrier plate when the fastening area of ​​the carrier plate is in the groove of the support body.The carrier body is a heat sink for a printhead, and the base module is a printhead for a printing device.

[0007] Exemplary embodiments of the invention will now be described in more detail with reference to the schematic drawing. These show: Fig. 1a a block diagram of an exemplary inkjet printing device; Fig. 1b an exemplary print bar with a central control assembly for multiple printheads; Fig. 2a An exemplary carrier plate of a control assembly for attaching the control assembly to a printhead, in a disassembled state; Fig. 2b the exemplary carrier plate of a control assembly for attaching the control assembly to a printhead, in an installed or attached state; Fig. 3a and Fig. 3b Exemplary designs of the mounting area of ​​the carrier plate that can be inserted into a groove of the print head; Fig. 3c Exemplary embodiments of the groove and the mounting bolt of the printhead in a top view; and Fig. 3D exemplary designs of the groove and the mounting bolt of the print head in a sectional view.

[0008] As stated at the outset, this document deals with the attachment of an electronic assembly to a base module, which may be electrical and / or electronic. The electronic assembly may be configured to interact with the base module and / or perform a function for the base module. Examples of such interactions and / or functions are: • the supply of electrical energy to the base module for the operation of the base module; • the transfer of data to and / or from the base module; and / or • controlling the base module and / or transmitting control signals to the base module, in particular to cause the base module to perform a specific task.

[0009] A preferred example of a base module is a printhead of a printing device, and a preferred example of an electronic assembly is a control assembly for a printhead. In the following, aspects of the invention are described by way of example for a control assembly and for a printhead. It should be noted that the described aspects are generally applicable to an electronic assembly and to a base module. In particular, in the following explanations, the term "printhead" may be replaced by the general term "base module" and the term "control assembly" by the term "assembly".

[0010] The in Fig. The printing device 100 shown in Figure 1a is designed for printing onto a sheet-shaped, flat, disc-shaped, or tape-shaped recording medium 120. The recording medium 120 can be made of paper, cardboard, carton, metal, plastic, textiles, a combination thereof, and / or other suitable and printable materials. The recording medium 120 is guided through the printing unit 140 of the printing device 100 along the transport direction 1, which is indicated by an arrow.

[0011] Fig. Figure 1a shows a Cartesian coordinate system with three axes or directions to illustrate the views shown in this document: transport direction or longitudinal axis 1, transverse direction or transverse axis 2 and vertical direction or vertical axis 3.

[0012] In the illustrated example, the printing unit 140 of the printing device 100 comprises two printing bars 102, each printing bar 102 being usable for printing with ink of a specific color, e.g., black, cyan, magenta, and / or yellow, and optionally MICR ink. Different printing bars 102 can be used for printing with different inks. Furthermore, the printing device 100 comprises at least one fixing and / or drying unit 150, which is configured to fix and / or dry a printed image printed on the recording medium 120.

[0013] A print bar 102 can comprise one or more print heads 103 arranged side by side in several rows to print the pixels of different columns 31, 32 of a print image onto the recording medium 120. In the Fig. In the example shown in Figure 1a, a print bar 102 comprises five print heads 103, each print head 103 printing the pixels of a group of columns 31, 32 of a print image onto the recording medium 120. The number of print heads 103 of a print bar 102 can be, for example, 5 or more, or 10 or more.

[0014] Each printhead 103 of the printing unit 140 comprises in the Fig. In the embodiment shown in Figure 1a, several nozzles 21, 22 are provided, each nozzle 21, 22 being configured to fire or propel ink droplets onto the recording medium 120. For example, a printhead 103 of the printing unit 140 can comprise several thousand effectively used nozzles 21, 22 arranged along several rows transverse to the transport direction 1 of the recording medium 120. By means of the nozzles 21, 22 of a printhead 103 of the printing unit 140, pixels of a line of a printed image can be printed onto the recording medium 120 transverse to the transport direction 1, i.e., along the width or transverse axis 2 of the recording medium 120.

[0015] The printing device 100 further comprises a control unit 101, e.g. a control hardware and / or a controller, which is set up to control the actuators of the individual nozzles 21, 22 of the individual printheads 103 of the printing unit 140 in order to apply the printed image to the recording medium 120 depending on print data.

[0016] The printing unit 140 of the printing device 100 thus comprises at least one printing bar 102 with K nozzles 21, 22, wherein the nozzles 21, 22 can be arranged in one or more printheads 103, and wherein the nozzles 21, 22 can be controlled with a specific line rate or with a specific control frequency in order to print a line, which runs transversely to the transport direction 1 of the recording medium 120, with K pixels or K columns 31, 32 of a printed image onto the recording medium 120, e.g. with K>1000. In the illustrated example, the nozzles 21, 22 are fixed in the printing device 100, and the recording medium 120 is moved past the stationary nozzles 21, 22 at a specific transport speed.

[0017] Fig. Figure 1b shows an exemplary print bar 102 with three printheads 103 in a section perpendicular to the transport direction 1. The individual printheads 103 are connected to a central control unit 131 via electrical lines 134. The one or more electrical lines 134 to a printhead 103 are connected to corresponding one or more sockets of the printhead 103 (not shown) via one or more plugs 133. The one or more electrical lines 134 can be configured to transmit the print data to a printhead 103 and / or to supply the printhead 103 with electrical power. Parallel data transmission can occur via multiple conductors of an electrical line 134. The print data can be provided to the central control unit 131 from the control unit 101 of the printing device 100 via an optical line 132.

[0018] The use of a central control unit 131 for multiple printheads 103 results in relatively long and therefore relatively interference-prone electrical lines 134 for data transmission. Furthermore, the use of a central control unit 131 does not allow for flexible adjustment of the number of printheads 103 and / or the print width of a print bar 102.

[0019] The aforementioned disadvantages can be avoided by providing a dedicated control assembly for each individual printhead 103 of a print bar 102, which is attached directly to the respective printhead 103. This allows the length of the electrical leads 134 to be reduced to a minimum. Furthermore, the number of printheads in a print bar 102 can be flexibly adjusted. On the other hand, mounting individual control assemblies to the individual printheads 103 of a print bar 102 or a printing device 100 can be relatively time-consuming. Therefore, a mounting device is described below that enables the efficient and reliable attachment of a control assembly to a printhead.

[0020] Fig. 2a and Fig. Figure 2b shows an exemplary mounting device 200 for a control assembly 221 on a printhead 103, in particular on the heat sink 201 of a printhead 103. The heat sink 201 of the printhead 103 has a groove 205 into which the mounting area 215 of a carrier plate 211 of the control assembly 221 can be inserted. The groove 205 preferably has a depth (along the vertical axis 3) sufficient to ensure that the carrier plate 211 is held in a stable, in particular a stable vertical, position when the mounting area 215 of the carrier plate 211 is located in the groove 205, as shown by way of example in Figure 2b. Fig. 2b shown. For this purpose, the dimensions, in particular along the transverse axis 2 and / or along the longitudinal axis 1, of the groove 205 and the fastening area 215 of the carrier plate 211 are preferably coordinated or identical.

[0021] In the Fig. 2a and Fig. In the example shown in Figure 2b, the groove 205 has a chamfer 206 on at least one outer or insertion edge 303. Alternatively or additionally, the support plate 211 can have a chamfer 216 on a foot edge 313 that faces the groove 205 when the fastening area 215 of the support plate 211 is inserted into the groove 205. This facilitates the insertion of the support plate 211 into the groove 205.

[0022] The control assembly 221 can have a printed circuit board 222 which is attached to the carrier board 211, in particular to the retaining area 212 of the carrier board 211, as shown in the Fig. 2a and Fig. Figure 2b shows the mounting area. Alternatively, the mounting area 212 of the carrier plate 211 can be designed directly as a printed circuit board. One or more electronic components can be arranged on the printed circuit board 222 to provide a specific function of the control assembly 221.

[0023] The control assembly 221 can further comprise a contact part 223 on which one or more connecting elements 133, in particular connectors, are arranged, enabling the formation of one or more plug connections with one or more complementary connecting elements 203, in particular sockets, of the printhead 103. In particular, one or more electrically conductive plug connections can be formed, e.g., for data transmission and / or for supplying power to the printhead 103. The contact part 223 can be arranged at an angle of 90° to the circuit board 222. This allows for a space-efficient arrangement of the control assembly 221 above a printhead 103.

[0024] The contact part 223 can be electrically connected to the circuit board 222 via an intermediate part 224. In a preferred example, the circuit board 222, the intermediate part 224, and the contact part 223 are designed as a continuous flexible circuit board, wherein the flexible circuit board is bent in the region of the intermediate part 224, in particular by 90°. This allows the control assembly 221 to be provided in a particularly efficient manner. Furthermore, the use of a flexible circuit board stabilizes the mounting of the control assembly 221 on the printhead 103, since the control assembly 221 can be supported on the printhead 103 via the contact part 223.

[0025] Fig. Figure 2a shows the position of the nozzle plate 202 of the printhead 103, which is arranged along the vertical axis 3 below and on which the one or more nozzles 21, 22 of the printhead 103 are arranged. The one or more connecting elements 203 and / or the groove 205 of the printhead 103 are typically arranged on the side of the printhead 103 opposite the nozzle plate 202. The heat sink 201 can be arranged on a contact side 204 of the printhead 103 extending along the vertical axis 3 and connected to the printhead 103.

[0026] Inserting a carrier plate 211 into a groove 205 of the (cooling) body 201 of the printhead 103 allows an installer to efficiently attach the control assembly 221 to the printhead 103. An additional locking mechanism ensures that the control assembly 221 remains firmly connected to the printhead 103 even during operation of the printing device 100 and the resulting vibrations.

[0027] Fig. 3a and Fig. Figure 3b shows different configurations of the carrier plate 211 on the left and right sides, in particular of the fastening area 215 of the carrier plate 211. Fig. 3a, section II is marked on the right-hand side, which corresponds to the section in Fig. Section 2b of the fastening device 200 corresponds to this.

[0028] The carrier plate 211 can have a recess 301 extending parallel to the groove 205 and / or parallel to the insertion edge 303 of the groove 205. The recess 301 can form a dividing line between the fastening area 215 of the carrier plate 211, which is located in the groove 205 when inserted, and the retaining area 212 of the carrier plate 211, which is located outside the groove 205 when inserted. The recess 301 can be located at a height 310 (along the vertical axis 3) extending from the bottom edge 313 of the carrier plate 211, which corresponds to the depth 310 of the groove 205 extending from the insertion edge 303.

[0029] In the one on the left side of the Fig. 3a and Fig. In the example shown in 3b, the support plate 211 has two recesses 301, which extend from each side edge 311 of the support plate 211 parallel to the bottom edge 313 and / or to the top edge 312 of the support plate 211 and / or parallel to the insertion edge 303 of the groove 205. In the recess on the right side of the Fig. 3a and Fig. In the example shown in 3b, the carrier plate 211 has an internal recess 301 that does not originate from a side edge 311 of the carrier plate 211.

[0030] As in the Fig. 3c and Fig. In a 3D representation, the print head 103 can have a locking bar 320 at the insertion edge 303 of the groove 205, which can be inserted into the recess 301 of the carrier plate 211 to clamp the carrier plate 211 inserted into the groove 205. The locking bar 320, in conjunction with the recess 301, can be designed to prevent the carrier plate 211 from being moved out of the groove 205, in particular from being pulled out. The locking bar 320 can thus be designed to prevent movement of the carrier plate 211 along the height axis 3.

[0031] The Fig. 3c and Fig. 3D shows on the left side a heat sink with two 320 modules, one 320 module each for the two recesses 301 on the left side of the Fig. 3a and Fig. 3b shown support plate 211. On the right side, the use of a central bar 320 is shown, which fits into the central recess 301 of the support plate 211 shown on the right side. Fig. 3a and Fig. The support plate 211 shown in Figure 3b engages. The bar 320 is exemplified as a hook 322, which engages a leg of the support plate 211 formed by the central recess 301 in order to fix the support plate 211.

[0032] In the in the Fig. 3c and Fig. In the 3D examples, the bolts 320 are each pivotally mounted about a rotational axis 321. Alternatively or additionally, a sliding bolt can be provided.

[0033] Fig. Figure 3c shows a top view of the top of the printhead 103, in particular the top of the heat sink 201 of the printhead 103. Fig. 3D shows the in Fig. 3c identified section II-II through the heat sink 201 of the printhead 103. This shows Fig.3D also includes a cooling channel 323 of the cooling element 201, through which a cooling medium, in particular water, can be guided to cool the cooling element 201 or the print head 103. The cooling medium can be conveyed into or out of the cooling element 201 via the connections 302.

[0034] This describes an arrangement 200 that enables efficient and / or tool-free mounting of a control assembly 221 on a printhead 103. A carrier plate 211, in particular a retaining plate, can be guided into a groove or slot 205 of the cooling jaw 201 of the printhead 103. The carrier plate 211 with the control assembly 221 can then be locked onto the printhead 103 using a lever or a latch 320.

[0035] In particular, this document describes a mounting device 200 for attaching an electronic assembly 221 to a base module 103. The electronic assembly 221 can be configured to supply the base module 103 with electrical energy and / or to control the base module 103 and / or to transmit data to the base module 103. The base module 103 can be a printhead of a printing device 100.

[0036] The mounting device 200 comprises a carrier plate 211, e.g., a carrier sheet, for the electronic assembly 221. The carrier plate 211 has at least one recess 301 between a mounting area 215 and a retaining area 212 of the carrier plate 211. The mounting area 215 can be used to mount the carrier plate 211 to the base module 103. The retaining area 212 can be used to support components of the assembly 221, in particular a printed circuit board 222. In particular, the carrier plate 211 can be designed as a printed circuit board in the retaining area 212 and / or be mechanically connected to a printed circuit board 222 of the electronic assembly 221.

[0037] Furthermore, the fastening device 200 includes a support body 201 of the base module 103. The support body 201 can be designed as a heat sink for the base module 103.

[0038] The support body 201 can have at least one groove 205 configured to receive the mounting area 215 of the support plate 211. The groove 205 is preferably shaped to be complementary to the mounting area 215 of the support plate 211. In particular, the groove 205 can have a depth 310 along the insertion direction or along the height direction 3 of the support plate 211, corresponding to the length 310 of the mounting area 215 of the support plate 211 along the insertion direction or height direction 3. Alternatively or additionally, the groove 205 can have a spread perpendicular to the surface of the support plate 211, corresponding to the thickness of the mounting area 215 of the support plate 211. Alternatively or additionally, the groove 205 can form a cavity with a volume corresponding to the volume of the mounting area 215 of the support plate 211.

[0039] By providing a carrier plate 211 with a fastening area 215, the shape of which is adapted to the shape of the groove 205 of the carrier body 201, it can be ensured that the carrier plate 211 can be reliably held on or by the carrier body 201 when the fastening area 215 of the carrier plate 211 is arranged in the groove 205 of the carrier body 201.

[0040] The support body 201 can further comprise at least one locking bar 320, in particular a mechanical locking bar or bolt, movably attached to the support body 201, which is designed to be moved into the recess 301 of the support plate 211 to secure it when the fastening area 215 of the support plate 211 is located in the groove 205 of the support body 201. The recess 301 and the locking bar 320 can be designed such that the support plate 211 is fixed or locked in the groove 205 of the support body 201 by inserting the locking bar 320 into the recess 301, in order to prevent movement of the support plate 211 against the insertion direction.

[0041] A fastening device 200 for attaching an electronic assembly 221 to a base module 103, in particular to a printhead of a printing device 100, is described. The fastening device 200 comprises a carrier plate 211 of the assembly 221 and a carrier body 201 of the base module 103, wherein the carrier body 201 has a groove 205 into which the carrier plate 211 can be inserted and locked by means of a latch 320 that engages in a recess 301 of the carrier plate 211. This enables efficient and reliable fastening of the assembly 221 to the base module 103.

[0042] The locking bar 320, also referred to in this document as a lever, can be configured to move into the recess 301 to lock the carrier plate 211, such that the locking bar 320 at least partially covers the groove 205. The groove 205 can have a specific gap width perpendicular to the surface of the carrier plate 211. The locking bar 320 can be configured to extend across the entire gap width of the groove 205 to lock the carrier plate 211. This ensures a particularly reliable fastening of the assembly 221 to the base module 103.

[0043] The locking bar 320 can be pivotally mounted on the insertion edge 303 of the groove 205, which faces the carrier plate 211 when the carrier plate 211 is inserted. Alternatively, the locking bar 320 can be slidably mounted on the insertion edge 303 of the groove 205. This enables a particularly efficient and convenient fastening of the assembly 221 to the base module 103.

[0044] The recess 301 preferably extends parallel to the insertion edge 303 of the groove 205, thereby enabling reliable closing and / or opening of the latch 320.

[0045] The recess 301 can be arranged on the carrier plate 211 such that the edge of the mounting area 215 of the carrier plate 211 adjacent to the recess 301 is aligned with the insertion edge 303 of the groove 205 and / or with the side of the bolt 320 facing the carrier body 201, if the mounting area 215 of the carrier plate 211 is arranged in the groove 205. Alternatively or additionally, the recess 301 can be arranged on the carrier plate 211 such that the edge of the retaining area 212 of the carrier plate 211 adjacent to the recess 301 is aligned with the side of the bolt 320 facing away from the carrier body 201, if the mounting area 215 of the carrier plate 211 is arranged in the groove 205. A recess 301 designed in this way enables a particularly reliable fixing of the assembly 221 to the base module 103.

[0046] The carrier plate 211 can have side edges 311 extending away from the carrier body 201 if the mounting area 215 of the carrier plate 211 is arranged in the groove 205. The recess 301 can be located on a side edge 311 of the carrier plate 211 and / or extend away from a side edge 311 of the carrier plate 211. Alternatively, the recess 301 can be located between the two side edges 311 of the carrier plate 211, in particular such that the recess 301 does not extend to the side edges 311. A recess 301 designed in this way enables particularly reliable fixing of the assembly 221 to the base module 103.

[0047] The recess 301 can be configured such that the support plate 212 forms a leg in an area adjacent to the recess 301. The latch 320 can then be configured as a pivotable hook 322, which can be pivoted about a pivot axis 321 to secure the support plate 211 and at least partially enclose the leg. This ensures a particularly reliable fastening of the assembly 221 to the base module 103.

[0048] The support plate 211 can have a chamfer 216 on a foot edge 313, which faces the groove 205 when inserted into the groove 205. Alternatively or additionally, the groove 205 can have a chamfer 206 on the insertion edge 303, which faces the support plate 211 when inserted into the groove 205. This allows a user to insert the support plate 211 into the groove 205 of the support body 201 in a particularly reliable and convenient manner.

[0049] The base module 103 can comprise at least one connecting element 203, in particular a socket, on a side 303 where the groove 205 is arranged. The fastening device 200 can comprise a contact part 223 with at least one complementary connecting element 133, in particular a plug, which is configured to form an electrically conductive and / or optical connection with the connecting element 203 of the base module 301.

[0050] The contact part 223 can be mechanically connected to the carrier plate 211, e.g., via an intermediate part 224. In particular, the assembly 221 can comprise a flexible printed circuit board that is connected to the carrier plate 211 and the contact part 223, or that forms the contact part 223 itself. The contact part 223 can be attached to the carrier plate 211 in such a way that it provides support for the carrier plate 211 when the carrier plate 211 is inserted in the groove 205 of the carrier body 201 and when the connecting elements 203, 133 are connected to each other. For this purpose, the contact part 223 can be arranged at an angle of 30° or more, or 45° or more, in particular perpendicular, to the carrier plate 211. These measures, in particular the integration of the connecting elements 133, 203 as a support function for the assembly 221, enable a particularly stable fastening of the assembly 221 to the base module 103.

[0051] Furthermore, this document describes a pressure bar 102 with one or more printheads 103, each comprising one of the fastening devices 200 described in this document.

[0052] Furthermore, this document describes a printing device 100 which includes the fastening device 200 described in this document. Reference symbol list 1. Transport direction or longitudinal axis 2. Transverse direction or transverse axis 3. Vertical direction or vertical axis 21, 22 nozzle Columns 31 and 32 (of the printed image) 100 printing device 101 Control unit 102 pressure bars 103 Basic module (printhead) 120 recording media 131 Control assembly 132 optical line 133 Connecting element (plug) 134 electrical line 200 fastening device 201 Carrier body (heat sink) 202 Nozzle plate 203 Connecting element (socket) 204 Contact side between printhead and heat sink 205 Groove or slot 206 Chamfering of the groove's insertion edge 211 Carrier plate 212 stopping area 215 Mounting area 216 Beveling of the base edge of the support plate 221 Assembly 222 Circuit board 223 Contact part 224 Intermediate part 301 recess 302 Heat sink connection 303 Groove insertion edge 310 Length of the mounting area of ​​the carrier plate 311 Side edge of the carrier plate 312 Head edge or top edge of the carrier plate 313 Foot edge or lower edge of the support plate 320 bars 321 Axis of rotation of the bolt 322 hooks 323 Cooling channel

Claims

[1] Fastening device (200) for fastening an electronic assembly (221) to a base module (103); wherein the fastening device (200) comprises, - a carrier plate (211) of the electronic assembly (221), which has at least one recess (301) between a fastening region (215) and a holding region (212) of the carrier plate (211); and - a carrier body (201) of the base module (103), which has at least one groove (205) designed to receive the fastening region (215) of the carrier plate (211), and which comprises at least one latch (320) movably fastened to the carrier body (201), which latch is designed to be moved into the recess (301) for fastening the carrier plate (211) when the fastening region (215) of the carrier plate (211) is located in the groove (205) of the carrier body (201) characterized by , that - the carrier body (201) is a heat sink (201) of a print head and - the base module (103) is a print head of a printing device (100). [2] Fastening device (200) according to claim 1, wherein the latch (320) is designed to be moved into the recess (301) such that the latch (320) at least partially covers the groove (205). [3] Fastening device (200) according to one of the preceding claims, wherein - the bolt (320) is pivotally mounted on an insertion edge (303) of the groove (205); or - the bolt (320) is slidably mounted on the insertion edge (303) of the groove (205). [4] Fastening device (200) according to one of the preceding claims, wherein - the groove (205) has a depth (310) along an insertion direction (3) of the carrier plate (211) which corresponds to a length (310) of the fastening region (215) of the carrier plate (211) along the insertion direction (3); and / or - the groove (205) has a spread perpendicular to a surface of the carrier plate (211) which corresponds to a thickness of the fastening region (215) of the carrier plate (211); and / or - the groove (205) forms a cavity with a volume corresponding to a volume of the fastening area (215) of the carrier plate (211); and / or - the groove (205) is shaped complementarily to the fastening area (215) of the carrier plate (211). [5] Fastening device (200) according to one of the preceding claims, wherein - the groove (205) has an insertion edge (303) which, when inserted, in particular when plugged in, faces the carrier plate (211); and - the recess (301) extends parallel to the insertion edge (303); and / or - the recess (301) is arranged on the carrier plate (211) in such a way that an edge of the fastening region (215) of the carrier plate (211) adjacent to the recess (301) is aligned with the insertion edge (303) of the groove (205) and / or aligned with a side of the bolt (320) facing the carrier body (201) when the fastening region (215) of the carrier plate (211) is arranged in the groove (205); and / or - the recess (301) is arranged on the carrier plate (211) in such a way that an edge of the holding region (212) of the carrier plate (211) adjacent to the recess (301) is aligned with a side of the bolt (320) facing away from the carrier body (201) when the fastening region (215) of the carrier plate (211) is arranged in the groove (205). [6] Fastening device (200) according to one of the preceding claims, wherein - the carrier plate (211) has side edges (311) which extend away from the carrier body (201) when the fastening region (215) of the carrier plate (211) is arranged in the groove (205); and - the recess (301) is arranged on a side edge (311) of the carrier plate (211); or - the recess (301) is arranged between the two side edges (311) of the support plate (211) and does not extend to the side edges (311). [7] Fastening device (200) according to one of the preceding claims, wherein - the recess (301) is designed such that the carrier plate (212) forms a leg in an area adjacent to the recess (301); - the latch (320) is designed as a pivotable hook (322) which can be pivoted about a rotation axis (321) for fastening the carrier plate (211) in order to at least partially enclose the leg. [8] Fastening device (200) according to one of the preceding claims, wherein - the support plate (211) has a bevel (216) on a base edge (313) which faces the groove (205) when inserted into the groove (205); and / or - the groove (205) has a bevel (206) on an insertion edge (303) which faces the carrier plate (211) when the carrier plate (211) is inserted. [9] Fastening device (200) according to one of the preceding claims, wherein - the base module (103) comprises at least one connecting element (203) on a side (303) on which the groove (205) is arranged; - the fastening device (200) comprises a contact part (223) with at least one connecting element (133) which is designed to form an electrically conductive and / or optical connection with the connecting element (203) of the base module (301); - the contact part (223) is mechanically connected to the carrier plate (211); and - the contact part (223) is arranged at an angle of 30° or more, or 45° or more, in particular perpendicular, to the carrier plate (211). [10] Fastening device (200) according to one of the preceding claims, wherein - the carrier plate (211) in the holding area (212) is designed as a printed circuit board and / or is mechanically connected to a printed circuit board (222) of the electronic assembly (221); and / or - the carrier body (201) is designed as a heat sink of the base module (103); and / or - the base module (103) is a print head of a printing device (100); and / or - the electronic assembly (221) is designed to supply the base module (103) with electrical energy and / or to control the base module (103) and / or to transmit data to the base module (103).

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