Holding device for attaching an electrical assembly to a printhead and a corresponding printhead arrangement

Abstract

Holding device for attaching an electrical assembly (210) to a printhead (103) of a printing device (100); wherein the printhead (103) has at least one recess (204), in particular a bore, on a first side surface and on an opposite second side surface; wherein the holding device (300) comprises, - a first component (301) with a component wall (411) having at least one positioning pin (305) configured to be inserted into the corresponding recess (204) of the first side surface of the printhead (103); wherein the first component (301) is configured to receive the assembly (210) for the printhead (103); and - a second component (302) with a component wall (421, 422) having at least one positioning pin (305) designed to be inserted into the corresponding recess (204) of the second side surface of the print head (103); wherein the holding device (300) is designed such that the print head (103) can be clamped between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302), while the positioning pin (305, 305a) is inserted into the corresponding recess (204) on both side surfaces of the print head (103), wherein - the first component (301) has a lower wall (306) that extends perpendicularly away from the component wall (411) of the first component (301) between a top surface of the print head (103) and a bottom surface of the assembly (210) from the first side surface to the second side surface of the print head (103) when the holding device (300) is attached to the print head (103); and - the second component (301), in particular the component wall (421, 422) of the second component (301), is attached to the lower wall (306) in order to clamp the print head (103) between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302).

Description

[0001] The invention relates to a holding device for attaching an electrical assembly, in particular a control assembly, to a printhead of a printing device and a corresponding printhead arrangement.

[0002] Inkjet printers can be used to print on recording media, such as paper. This involves using one or more printheads, each with one or more nozzles, to fire ink droplets onto the recording media, thus creating the desired printed image.

[0003] An electrical and / or electronic assembly, in particular a flat printhead assembly, is typically mounted on the printhead of a printing device. This assembly is designed to control the operation of the printhead for printing an image. Mounting and / or dismounting the assembly, for example during maintenance of the printing device, can be relatively complex and time-consuming. Furthermore, providing a mounting bracket for the assembly on the printhead can incur relatively high costs.

[0004] Document DE 44 43 254 C1 discloses an arrangement for an ink printhead consisting of individual ink print modules in a stacked design, which operate according to the edge shooter principle and are equipped with plate-shaped piezoelectric actuators.

[0005] Document DE 602 09 307 T2 discloses an electrical connection for line-width inkjet printhead assemblies that enables communication of electrical signals between an electronic control and a plurality of printhead chips, each attached to a single carrier.

[0006] Document DE 601 02 192 T2 discloses an arrangement for positioning a carrier for an inkjet printhead, comprising a mounting arrangement with a plurality of reference features and several carriage rails.

[0007] This document addresses the technical problem of enabling a reliable, stable, and cost-effective mounting of an assembly to a printhead. This problem is solved by the features of independent device claim 1.

[0008] According to one aspect of the invention, a holding device for attaching an electrical and / or electronic assembly to a printhead of a printing device, in particular an inkjet printing device, is described. The printhead can have a nozzle plate with one or more nozzles on its underside. Furthermore, the printhead can comprise one or more interface elements, e.g., plugs or sockets, on its upper side, which are configured to be connected to corresponding interface elements of the assembly, e.g., sockets or plugs, for example, to enable the transmission of print data for printing an image. The holding device can be configured to attach the assembly to the upper side of the printhead so that the one or more interface elements can be efficiently connected to one another.

[0009] The printhead can have a first side surface and an opposing second side surface, each extending from the underside to the top of the printhead. The side surfaces of the printhead can run perpendicular to the transport direction of the recording medium to be printed. The first and / or second side surfaces can be the largest surfaces of the printhead, which may be cuboid in shape. The printhead can have one or more holes or recesses on both the first and second side surfaces. These one or more holes can be a standard feature of the printhead. The position, shape, and / or size of the individual holes can be specified by the printhead specifications.

[0010] The one or more holes can be used, for example, to attach cooling pads to the first and / or second side face of the printhead, e.g., by means of a screw connection. The one or more holes can then be located in the cooling pad on the first side face and / or in the cooling pad on the second side face of the printhead. Furthermore, screws can be countersunk into the one or more holes to attach the respective cooling pad to the respective side face of the printhead. The screws can be countersunk in such a way that a cavity, e.g., with a depth of 1 mm or more, exists between the top edge of a hole and a countersunk screw. This cavity can be used to attach the mounting device for an assembly, as described in this document, to the printhead.

[0011] The holding device comprises a first component with a component wall having one or more positioning pins designed to be inserted into the corresponding one or more bores in the first side face of the print head. The component wall of the first component can extend parallel to the first side face of the print head and / or parallel to the printed circuit board, in particular to the largest or main printed circuit board, of the assembly.

[0012] The first component can be designed to accommodate the printhead assembly. In particular, the wall of the first component can be designed to cover one side, especially the circuit board, of the assembly. Furthermore, the wall of the first component can have one or more holes that allow the assembly, especially the circuit board of the assembly, to be attached to the wall of the first component by means of a screw connection. The first component can thus be used to attach the assembly to the holding device. Furthermore, the first component can form at least part of a housing for the assembly.

[0013] Furthermore, the holding device comprises a second component with a wall that has one or more positioning pins designed to be inserted into the corresponding one or more bores in the second side surface of the print head. The wall of the second component can be arranged parallel to the second side surface of the print head.

[0014] The one or more positioning pins can each be configured to penetrate to a depth of 1 mm or more into the corresponding one or more bores. Furthermore, the one or more positioning pins can be rigidly connected to the respective component wall. The arrangement of the one or more positioning pins corresponds to the arrangement of the corresponding bores on the respective side face of the print head, which is specified, for example, by a print head specification. In a preferred example, two or more bores and corresponding two or more positioning pins are arranged on each of the two side faces.

[0015] The holding device is designed such that the print head can be clamped between the wall of the first component and the wall of the second component, while one or more positioning pins are inserted into the corresponding one or more holes on the two side surfaces of the print head. In particular, the second component and the first component can form a clamp, especially a clamping clamp and / or a spring clamp, designed to clamp the print head between the wall of the first component and the wall of the second component. The walls of the two components can each form a leg of a clamp or a clamp between which the print head can be clamped in order to attach or mount the holding device to the print head.

[0016] A holding device is described that is designed to support an electrical and / or electronic assembly and is further designed to clamp the two side faces of a printhead between two opposing sides of the holding device in order to secure the assembly to the printhead. The additional use of positioning pins, which can be inserted into corresponding holes in the printhead, enables efficient, precise, and secure attachment of the assembly to the printhead.

[0017] The second component can be designed to be screwed to the first component by means of one or more screws, such that the wall of the second component is pressed towards the wall of the first component, clamping the print head between the two. Furthermore, the second and first components can be designed such that by loosening the one or more screws, the wall of the first component can be moved away from the wall of the second component, allowing the one or more positioning pins on the two side faces of the print head to be removed from the corresponding one or more holes. Using a screw connection between the first and second components enables a particularly reliable and secure attachment of the component to the print head.

[0018] As explained above, the first and second components can form a spring clamp. Specifically, the holding device can be designed such that the wall of the first component and the wall of the second component each form a leg of a clamp or clip, with the legs being pressed against each other by a spring to clamp the side surfaces of the print head between the legs of the clamp or clip. Conversely, the spring force can be overcome to move the legs apart and thus remove the holding device from the print head. By using a spring between the walls of the first and second components, a particularly reliable, secure, and convenient attachment of the component to the print head can be achieved.

[0019] The first component can have a lower wall that extends perpendicularly from the component wall of the first component, between the top of the printhead and the bottom of the assembly, from the first side face to the second side face of the printhead when the holding device is attached to the printhead. The lower wall of the first component preferably only partially covers the bottom of the assembly, so that an interface element on the bottom of the assembly can be connected to a complementary interface element on the top of the printhead when the holding device is attached to the printhead. The lower wall can be designed to rest on the top of the printhead to enable a particularly stable attachment of the assembly to the printhead.

[0020] The second component, specifically its wall, can be attached to the lower wall of the first component to clamp the print head between the wall of the first component and the wall of the second component. This allows for particularly convenient attachment of the assembly to the print head.

[0021] According to a further aspect of the invention, a printhead assembly for a printing device is described. The printhead assembly comprises a printhead, an electrical and / or electronic assembly for controlling the printhead, and a holding device described in this document, which is configured to attach the assembly to the printhead, in particular to the top of the printhead.

[0022] As described above, the printhead can have a first cooling jaw on a first side surface and / or a second cooling jaw on a second side surface. Each of the first and / or second cooling jaws can have one or more holes, the arrangement of which may be specified in a printhead specification. The first cooling jaw can be attached to the printhead by means of one or more screws countersunk into the one or more holes in the first cooling jaw. Alternatively or additionally, the second cooling jaw can be attached to the printhead by means of one or more screws countersunk into the one or more holes in the second cooling jaw.

[0023] The one or more positioning pins of the first component wall of the first component of the holding device can be arranged in the corresponding one or more bores of the first cooling jaw and / or the one or more positioning pins of the second component wall of the second component of the holding device can be arranged in the corresponding one or more bores of the second cooling jaw.

[0024] This allows the holes used to fix the cooling jaws to the printhead to also be used to attach and / or position the assembly on the printhead. This enables a particularly cost-effective printhead arrangement.

[0025] Exemplary embodiments of the invention will now be described in more detail with reference to the schematic drawing. These show: Fig. 1 a block diagram of an exemplary inkjet printing device; Fig. 2 an exemplary printhead arrangement with a printhead and an assembly; Fig. 3a to 3d different views of an exemplary holding device for an assembly; and Fig. 4a to 4c different components of an exemplary holding device

[0026] The in Fig. The printing device 100 shown in Figure 1 is designed for printing onto a ribbon-shaped, sheet-shaped, or sheet-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, indicated by an arrow.

[0027] 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 typically includes at least one fixing or drying unit 150, which is configured to fix a printed image printed onto the recording medium 120.

[0028] A print bar 102 can comprise one or more print heads 103, which may be 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, 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.

[0029] Each printhead 103 of the printing unit 140 comprises in the Fig. In the embodiment shown in Figure 1, 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 of the recording medium 120.

[0030] The printing device 100 further comprises a control unit 101, e.g., control hardware and / or a controller, which is configured 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. The print data can indicate for each nozzle 21, 22, i.e., for each column 31, 32 of the printed image, and for each line of the printed image, whether ink should be ejected or not, and if so, what quantity of ink should be ejected.

[0031] The printing unit 140 of the printing device 100 thus comprises at least one printing bar 102 with K nozzles 21, 22, which can be controlled with a specific line rate to print a line, running perpendicular 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 example shown, 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.

[0032] Fig. Figure 2 shows an exemplary printhead arrangement 200 with a printhead 103 and an electronic assembly 210 for controlling the printhead 103. The printhead 103 has one or more data interface elements 202 on its upper surface, which can each form a data connection for data transmission with one or more corresponding data interface elements (not shown) of the assembly 210. In particular, the one or more data interface elements 202 of the printhead 103 can each form a plug connection with the corresponding one or more data interface elements of the assembly 210.

[0033] A nozzle plate 203 with one or more nozzles 21, 22 is typically arranged on the underside of the printhead 103. Furthermore, a cooling plate or cooling jaw 201 is typically arranged on at least one side surface of the printhead 103, which extends between the underside and the top surface of the printhead 103. This cooling plate or cooling jaw is designed to cool the printhead 103 during operation. The cooling plate 201 can be configured to carry a cooling fluid, in particular a cooling liquid. The cooling medium can be introduced into the cooling plate 201 via an inlet (not shown) and discharged from the cooling plate 201 via an outlet (not shown).

[0034] A cooling plate 201 can be (removably) attached to a side surface of the print head 103. For this purpose, one or more openings or bores 204 can be provided in the cooling plate 201, into each of which a screw can be inserted to screw the cooling plate 201 to the side surface of the print head 103. A bore 204 can be designed such that the screw can be countersunk in the bore 204. In particular, the bore 204 can be designed such that the screw head of a screw countersunk in the bore 204 has a certain minimum distance (e.g., 1 mm or more, or 2 mm or more) from the outer edge of the bore 204. This enables a particularly reliable and space-efficient attachment of the cooling plate 201 to the side surface of the print head 103.

[0035] The (cylindrical) bores 204 (and / or differently shaped recesses) in the one or more cooling plates 201 of the printhead assembly 200 can also be used to attach an assembly 210 to the printhead 103 in an efficient and stable manner, in particular to the cooling plates 201 of the printhead 103. Fig. Figures 3a to 3c show different views of a holding device 300 for attaching an assembly 210, in particular a flat assembly, to a printhead 103. The holding device 300 has positioning pins 305 which are attached to the holding device 300 such that the individual, in particular cylindrically shaped, positioning pins 305 project into a bore 204 of the one or more cooling plates 201 when the holding device 300 is mounted on the printhead 103. The use of positioning pins 305, which are also referred to in this document as positioning or centering lugs, enables efficient, precise, and stable attachment of an assembly 210 to a printhead 103. At least one positioning pin 305a can have an inclined ramp 305b, which facilitates the mounting of the holding device 300 onto the cooling plates 201. Fig. Figure 3d shows a ramp 305b only on the left positioning pin 305a. Preferably, all positioning pins 305a have such ramps 305b.

[0036] The holding device 300 can comprise a component 303, which is also referred to in this document as a third component, and a component 301, which is also referred to in this document as a first component. The components 301 and 303 are configured to form a housing that at least partially encloses the assembly 210. As described in the Fig. As shown in Figures 4a to 4c, the third component 303 can have a first component wall 401, which is designed to cover a planar printed circuit board of the assembly 210 from one side. Furthermore, the third component 303 can have one or more additional component walls 402, each perpendicular to the first component wall 401, which are designed to protect the assembly 210 on one side of the planar printed circuit board of the assembly 210.

[0037] The third component 303 can have one or more bores 403, through which the third component 303 can be connected to the assembly 210, in particular to the circuit board of the assembly 210, and / or to another, in particular the first, component 301 of the holding device 300 by means of a screw connection.

[0038] The first component 301 is configured to cover a second side of the planar printed circuit board of the assembly 210. The first component 301 can have a first component wall 411, which is arranged parallel to the first component wall 401 of the third component 303. Furthermore, the first component 301 can have a lower component wall 306, which is configured to cover at least a portion of the underside of the assembly 210 facing the print head 103. The lower component wall 306 has at least one recess for the one or more data interface elements 312 of the assembly 210. The lower component wall 306 can be substantially perpendicular to the first component wall 411.

[0039] Furthermore, the first component 301 can have an upper component wall 412 configured to cover at least part of the top surface of the assembly 210 facing away from the print head 103. The upper component wall 412 can have one or more recesses and / or openings 418 for one or more connectors 313 of the assembly 210, via which the assembly 210 can be coupled to the control unit 101 of the printing device 100 for data transmission.

[0040] The first component 301 can have one or more bores 414 in its first wall 411, which allow the first component 301 to be screwed to the third component 303, thus forming a housing for the assembly 210. In particular, the third component 303 can be fastened to a nut 307 of the assembly 210 by means of a screw 308, which passes through a bore 403 in the third component 303 (see Fig. 3a). Furthermore, the first component 301 can be fastened to the nut 307 of the assembly 210 by means of a screw 309 which is guided through a bore 414 of the second component 301.

[0041] As can be seen particularly from the Fig. 3c and Fig. As can be seen from Figure 4b, the first component 301 has one or more positioning pins 305 on its first component wall 411, which, in the installed state of the holding device 300, is arranged parallel to a cooling plate 201 of the print head 103. These positioning pins are arranged on the first component wall 411 such that they can be inserted into corresponding bores 204 in the cooling plate 201, thus positioning the first component 301 in a defined position relative to the cooling plate 201 of the print head 103. Preferably, the positioning pins 305, 305a are shaped to complement the corresponding bores / recesses 204.

[0042] In particular, the first component wall 411 can have one or more sections 415 that extend beyond the lower component wall 306 towards the print head 103. The positioning pins 305 can be arranged in these one or more sections 415 of the first component wall 411 of the first component 301.

[0043] The lower component wall 306 of the first component 301 can be configured such that the lower component wall 306 has a section 416 extending perpendicularly from the first component wall 411, and a second section 417 that runs parallel to the first component wall 411 of the first component 301 and, if applicable, parallel to the first component wall 401 of the third component 303. The lower component wall 306 can thus partially encircle the lower edge of the assembly 210. One or more bores 413, which may have an internal thread, can be arranged in the second section 417 of the lower component wall 306, so that a screw 304 can be screwed into each of the individual bores 413.

[0044] The holding device 300 can have a second component 302, which is designed to be fastened to the one or more bores 413 of the first component 301 by means of one or more screws 304. The individual screws 304 can each pass through a bore 423 in the second component 302. The one or more bores 413 can be arranged on a component wall 421 of the second component 302.

[0045] The second component 302 can have a component wall 422 with one or more positioning pins 305 arranged such that the one or more positioning pins 305 can be inserted into corresponding one or more bores 204 of a cooling plate 201 of the print head 103.

[0046] The holding device 300 can thus have positioning pins 305 which can be inserted into bores 204 on opposite side faces of the printhead 103 in order to position the holding device 300 above the top of the printhead 103. The positioning pins 305 can be arranged on opposite component walls 411, 422 of the holding device 300, wherein the opposite component walls 411, 422 can be moved towards each other, e.g. by a screw 304 and / or by a spring (not shown), so that the printhead 103 is clamped between the two component walls 411, 422 and thus the holding device 300 is fixed to the printhead 103.

[0047] This document describes a holding device 300 for an assembly 210, designed to be attached to the printhead 103 without any modification of the printhead 103. The holding device 300 can also be designed as a handle element, allowing a user to grasp or hold the assembly 210. The holding device 300 can be composed of two parts. Two side parts 301, 302 of the holding device 300 can be inserted into two or more centering lugs 305 each into two existing bores 204 in the two cooling jaws 201. The holding device 300 can be connected to the printhead 103 by screwing the two side parts 301, 302 together, for example, using two screws 304. The bores 204 can be precisely specified in position and shape according to a specification of the printhead 103. The positioning pins orDepending on the specification of the printhead 103, centering lugs 305 can be arranged on the side parts 301, 302 of the holding device 300.

[0048] Furthermore, this document describes a printing device 100 which includes the printhead arrangement 200 described in this document.

[0049] The holding device 300 described in this document enables a cost-effective and secure mounting of an assembly 210 onto a printhead 103, in particular such that the printhead 103, including assembly 210 and holding device 300, can be securely mounted onto and / or removed from a printbar 102. Furthermore, the holding device 300 allows for easy attachment and removal of the electronic assembly 210 from the printhead 103. For example, in the event of a printhead failure, the electronic assembly 210 can be easily and safely detached from the printhead 103. Reference symbol list 1. Transport direction 21, 22 Nozzle (print pattern) Columns 31 and 32 (of the printed image) 100 printing device 101 Control unit 102 pressure bars 103 Printhead 120 recording media 140 printed works 150 fixing or drying units 200 printhead arrangement 201 Cooling plate or cooling jaw 202 Interface element 203 Nozzle plate 204 bore 210 assembly 301-303 Component or side panel 304 screw 305, 305a Positioning pin or wart 305b Ramp from 305a 306 lower wall (of a component) 307 Mother (on assembly) 308, 309 screw 312 Interface element 313 Connector 401 Component wall 402 Side wall 403 bore 411 Component wall 412 upper wall 413, 414 bore Section 415 (construction wall) Sections 416 and 417 (lower wall) 418 Recess or opening 421, 422 Component wall 423 bore

Claims

[1] Holding device for attaching an electrical assembly (210) to a printhead (103) of a printing device (100); wherein the printhead (103) has at least one recess (204), in particular a bore, on a first side surface and on an opposite second side surface; wherein the holding device (300) comprises, - a first component (301) with a component wall (411) having at least one positioning pin (305) configured to be inserted into the corresponding recess (204) of the first side surface of the printhead (103); wherein the first component (301) is configured to receive the assembly (210) for the printhead (103); and - a second component (302) with a component wall (421, 422) having at least one positioning pin (305) designed to be inserted into the corresponding recess (204) of the second side surface of the print head (103); wherein the holding device (300) is designed such that the print head (103) can be clamped between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302), while the positioning pin (305, 305a) is inserted into the corresponding recess (204) on both side surfaces of the print head (103), wherein - the first component (301) has a lower wall (306) that extends perpendicularly away from the component wall (411) of the first component (301) between a top surface of the print head (103) and a bottom surface of the assembly (210) from the first side surface to the second side surface of the print head (103) when the holding device (300) is attached to the print head (103); and - the second component (301), in particular the component wall (421, 422) of the second component (301), is attached to the lower wall (306) in order to clamp the print head (103) between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302). [2] Holding device according to claim 1, wherein - the second component (302) is designed to be screwed to the first component (303) by means of one or more screws (304) such that the component wall (421, 422) of the second component (302) is pressed towards the component wall (411) of the first component (301) in order to clamp the print head (103) between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302); and - the second component (302) and the first component (301) are designed such that by loosening the one or more screws (304) the component wall (411) of the first component (301) can be moved away from the component wall (421, 422) of the second component (302), so that in order to remove the holding device (300) from the print head (103) the positioning pin (305) can be led out of the corresponding recess (204) on the two side surfaces of the print head (103). [3] Holding device according to one of the preceding claims, wherein the recess (205) is cylindrically shaped and / or is shaped complementarily to the positioning pin (305, 305a). [4] Holding device according to one of the preceding claims, wherein the positioning pin (305a) has a ramp (305b). [5] Holding device according to one of the preceding claims, wherein the second component (302) and the first component (301) form a clamp, in particular a clamping clamp and / or a spring clamp, which is designed to clamp the print head (103) between the component wall (411) of the first component (301) and the component wall (421, 422) of the second component (302). [6] Holding device according to one of the preceding claims, wherein the lower wall (306) of the first component (301) only partially covers the underside of the assembly (210), so that an interface element (312) on the underside of the assembly (210) can be connected to a complementary interface element (202) on the top of the printhead (103) when the holding device (300) is attached to the printhead (103). [7] Holding device according to one of the preceding claims, wherein - the positioning pin (305, 305a) is designed to penetrate to a depth of at least 1 mm into the corresponding recess (204); and / or - the positioning pin (305, 305a) is firmly connected to the respective component wall (411, 421, 422) and / or is molded onto the respective component wall (411, 421, 422). [8] Holding device according to one of the preceding claims, wherein - the component wall (411) of the first component (301) is designed to cover one side, in particular a printed circuit board, of the assembly (210); and - the component wall (411) of the first component (301) has in particular one or more bores (414) which make it possible to attach the assembly (210), in particular the circuit board of the assembly (210), to the component wall (411) of the first component (301) by means of a screw connection. [9] Printhead assembly for a printing device (100); wherein the printhead assembly (200) comprises, - a printhead (103); - an electrical assembly (210) for controlling the printhead (103); and - a holding device (300) according to one of the preceding claims, which is configured to attach the assembly (210) to the printhead (103), in particular to a top side of the printhead (103). [10] Printhead arrangement according to claim 9, wherein - the printhead (103) has a first cooling jaw (201) on a first side surface and / or a second cooling jaw (201) on a second side surface; - at least one recess (204) is arranged in each of the first and / or second cooling jaw (201); and - the positioning pin (305) of the first component wall (411) of the first component (301) of the holding device (300) is arranged in the corresponding recess (204) of the first cooling jaw (201) and / or the positioning pin (305) of the second component wall (421, 422) of the second component (302) of the holding device (300) is arranged in the corresponding recess (204) of the second cooling jaw (201). [11] Printhead arrangement according to claim 10, wherein - the first cooling jaw (201) is attached to the printhead (103) by means of at least one screw which is countersunk in the recess (205) of the first cooling jaw (201); and / or - the second cooling jaw (201) is attached to the print head (103) by means of at least one screw which is recessed in the recess (205) of the second cooling jaw (201).

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