EP3344460A1

EP3344460A1 - Device and method for cleaning a printhead

Info

Publication number: EP3344460A1
Application number: EP16785510.5A
Authority: EP
Inventors: Franziska Peinze; Marko Breternitz; Arthur Mathea; Phillip Horn; Stefan Tschorn; Günter FRIEDMANN; Olaf Dressel
Original assignee: Bundesdruckerei GmbH
Current assignee: Bundesdruckerei GmbH
Priority date: 2015-10-27
Filing date: 2016-10-26
Publication date: 2018-07-11
Anticipated expiration: 2036-10-26
Also published as: DE102015220943A1; WO2017072134A1; EP3344460B1

Abstract

The invention relates to a method and to a device for cleaning a printhead (2). Said device (1) comprises a cleaning head module (4) which can be moved in and counter to a direction of cleaning (RR). Said cleaning head module (2) can be moved, when moving in the direction of cleaning (RR), from a release position into a pressure position, and when moving counter to the direction of cleaning (RR), from the pressure position into the release position.

Description

Apparatus and method for cleaning a printhead

The invention relates to an apparatus and a method for cleaning a

Printhead.

Printheads, particularly printheads from inkjet printers, can become dirty, which can affect print quality. For example, can dry ink, especially based on organic solvents, in a relatively short period of time. This can also be done in particular in the region of the nozzles of a print head. Nozzles can thus be at least partially blocked by the dried ink. This in turn leads to a reduction in print quality.

In conventional printhead cleaning methods, so-called squeegees, particularly rubber squeegees, can be used to remove dirt such as e.g. the dried ink or different dirt particles, to wipe off. However, there is a risk here of pushing this dirt into the nozzles and clogging them, in particular permanently. In particular, inks comprising relatively large pigments, for example pigments with a diameter greater than 1 μm, can quickly lead to complete blockage of nozzles. However, these inks are especially for the production of security products, in particular value and / or

Security documents, used.

The technical problem is to provide a method and a device for cleaning a printhead, which is reliable and as complete as possible

Ensure cleaning of the printhead, especially nozzles of the printhead.

The solution to the technical problem arises from the objects with the

Features of claims 1 and 17. Further advantageous embodiments of the invention will become apparent from the dependent claims.

A device for cleaning a printhead is proposed. In particular, the printhead may be a so-called inkjet printhead. By means of the inkjet printhead ink can be printed onto a substrate according to known methods. The printhead may have one or more nozzles through the ink can be ejected from the print head towards the substrate. The at least one nozzle may be arranged in a nozzle region of the print head.

The apparatus may be for cleaning a printing device having a plurality of printheads, wherein each of the printheads may be cleaned by the device.

The device comprises a cleaning head module. The cleaning head module may serve to support a cleaning element or a portion thereof. The

Cleaning element may in particular be a cleaning cloth. In this case, the device may comprise the cleaning element. Preferably, the

Cleaning element to be provided with a solvent cleaning element. For example, the cleaning element may be a solvent impregnated with the cleaning element.

The cleaning head module is movable in and against at least one cleaning direction. In particular, the cleaning head module can be moved in an actuator-supported manner. This may mean that the device has at least one device for moving the

Cleaning head module includes. This device for movement can in this case comprise various sub-devices which can interact with one another for the movement of the cleaning head module. For example, the device for movement may comprise a drive device. Furthermore, the device may comprise coupling devices which mechanically couple the drive device with the cleaning head module. For example, such a coupling device may be formed as a spindle or include such.

The cleaning direction may designate a spatial direction. For example, the cleaning direction may be oriented perpendicular to a vertical direction, wherein the vertical direction is oriented parallel to the direction of a gravitational force. The pressure direction explained below can also be a spatial direction.

Further, the cleaning head module in the cleaning direction of a

Starting position to be moved to an end position. Accordingly, that can

Cleaning head module are moved against the cleaning direction from the end position to the starting position. Further, the cleaning head module is / moves in a movement in the cleaning direction, in particular during a movement from the starting position to the end position, from a release pitch to a pressure position. Next is / will be

Cleaning head module in a movement opposite to the cleaning direction,

in particular during a movement from the end position to the starting position, from the pressure position into the release pitch movable / moved.

The movement from the release division into the pressure position can take place at least partially in or along a pressure direction. Accordingly, the movement can take place from the pressure position into the release pitch counter to this pressure direction. This can mean that at least one directional component of the direction of movement is oriented in the direction of movement during the movement from the release division into the pressure position. Furthermore, at least one directional component of the direction of movement in the movement from the pressure position into the release pitch can be oriented counter to the pressure direction.

According to the invention, the cleaning direction is different from the pressing direction. This means in particular that the pressure direction is not oriented parallel to the cleaning direction.

The pressure direction can be oriented perpendicular to the cleaning direction. In particular, the pressure direction can be oriented parallel to a direction of emission of the ink from the at least one nozzle of the print head. The pressure direction may be further oriented perpendicular to a nozzle surface of the printhead having the at least one nozzle. In this case, the cleaning direction may be oriented parallel to this nozzle surface. Furthermore, the pressing direction can be oriented parallel to the vertical direction.

The movement in or against the pressing direction may be a non-actuator-assisted movement. This may mean that the movement is not caused by an actuator, which moves the cleaning head module in and against the pressing direction. Rather, the movement is due to a mechanical coupling caused by the movement of the cleaning head module in or against the cleaning direction. In the Andruckstellung is a mechanical contact between the by the

Cleaning module held cleaning element and the printhead, in particular a nozzle portion of the printhead made. In the release division, the cleaning element does not contact the print head, in particular the nozzle area.

In other words, during the movement of the cleaning head module in the cleaning direction by the simultaneous movement in the pressing direction of

mechanical contact of the cleaning element made with the printhead.

Accordingly, in the movement of the cleaning head module against the cleaning direction by the simultaneous movement counter to the pressing direction of the mechanical contact between the cleaning head module and the print head is canceled.

Here, the cleaning head module in a first section of a

Trajectory between the starting position and the end position in the release pitch and in the remaining part of the trajectory in the pressure position are. Thus, along the trajectory there may be a contact position or a contact portion in which the cleaning element mechanically moves in contact with the printhead as it moves in the cleaning direction and loses mechanical contact with the printhead as it moves in the cleaning direction.

A movement from the starting position to the end position can also be referred to as a cleaning drive. The cleaning trip may also include a movement from the end position back to the starting position.

The device may further comprise at least one

Cleaning element providing device include. Furthermore, the device may comprise a cleaning element receiving device. For example, a

Cleaning cloth be provided by a cloth dispensing device in the form of rolls. Next, the cleaning cloth can be wound by a cloth receiving device in the form of rolls. In this case, therefore, the cleaning cloth from the cloth dispensing device on the cleaning head module for

Towel receiving device extend. The proposed device can be fastened to a printing table, in particular at a front end of the printing table. For this purpose, the device

have corresponding fasteners. The printing table may be a printing table movable relative to the at least one printing head. In this case, the print head and / or the printing table can be movable. Preferably, however, the printing table is movable while the at least one print head is arranged stationary. On the printing table, the substrate to be printed can be arranged. By moving the printing table, the substrate can then be moved under the at least one print head.

If the device is attached to the printing table, a safe movement of the printing table under the at least one print head can take place in the release position since no mechanical contact between the cleaning head module or element and the at least one print head is possible.

In the pressure position, the cleaning element of the cleaning head module by the movement in or against the cleaning direction on the printhead, in particular at the nozzle area of the printhead, along, whereby the cleaning of the printhead takes place by the cleaning element dirt particles, in particular dried ink, receives. If the cleaning element is provided with a solvent, in particular dried ink can be dissolved and then through the

Cleaning element to be included.

Overall, results in a reliable manner as complete as possible cleaning of the print head, at the same time damage to the print head is avoided.

In a further embodiment, the device comprises at least one

Guide element for guiding the movement of the cleaning head module in and against the cleaning direction. Alternatively or cumulatively, the device comprises at least one guide element for guiding the movement of the cleaning head module in and against the pressure direction. Here, the guide element for guiding in and against the cleaning direction and the guide element for guiding in and against the

Forming pressure direction. However, the guide elements may also be different from each other. For example, a guide element may be formed as a guide rail. The guide rail for guiding the movement in and against the pressing direction may, for example, have a ramp-shaped section. In this case, the cleaning head module can be moved in a movement along the ramp-shaped portion in or against the pressing direction.

For example, can increase in the ramp-shaped portion of the guide rail, a width or height of the guide rail along the longitudinal direction thereof.

Also, in at least a portion of the guide rail, a central centerline of the guide rail may be oriented parallel to the cleaning direction. In a further section, the central center line may be oriented parallel to a direction which has at least one directional component which is oriented parallel to the pressing direction. Further, in this section, the central centerline may include a directional portion disposed parallel to the cleaning direction.

The device may in this case comprise a base plate. The at least one

Guide element for guiding the movement in and against the cleaning direction and / or in or against the pressing direction can be formed by the base plate or arranged on the base plate, for example, fixed. In this case, the cleaning head module or a mechanically connected thereto component, for example, a later explained in more detail slide, have corresponding guide elements.

This results in an advantageous manner, a reliable and defined movement of the cleaning head module during a cleaning trip.

In particular, it can be ensured that a desired mechanical contact between the cleaning head module and the print head is produced during the cleaning run. This in turn ensures a reliable cleaning of the

Printhead.

In a further embodiment, the device comprises a carriage. The carriage can in this case be movable in and against the cleaning direction. Preferably the carriage can be moved only in and against the cleaning direction. Preferably, the device comprises at least one guide element for guiding the movement of the carriage. This can be the guide element for guiding the movement of the cleaning head module in and against the cleaning direction. In particular, such a guide element may be a guide element for linear guidance of the carriage. Such a guide element can also be designed as a guide rail. The guide element for guiding the movement of the carriage can also be formed by the base plate or arranged on the base plate.

The cleaning head module is movably arranged on the carriage. This may mean that the cleaning head module is movable relative to the carriage. Through this

Relative movement, the cleaning head module can be moved in and against the pressing direction. In this embodiment, therefore, the movement of the

Cleaning head module in and against the cleaning direction by the movement of the carriage in and opposite to the cleaning direction. The movement of the

Cleaning head module in and against the pressing direction can through the

Relative movement of the cleaning head module made to slide or be equal to this relative movement.

For example, the carriage may comprise a carriage plate on or on which the cleaning head module is movably arranged, in particular movably mounted.

Furthermore, the device may comprise at least one return spring element which connects the carriage and the cleaning head module. The at least one

Return spring element can in this case be designed and / or arranged such that it exerts an at least partially counter to the pressing direction oriented restoring force on the cleaning head module when this is in the pressure position.

It is conceivable that the cleaning head module during the movement of the carriage in or against the cleaning direction by the / previously explained

Guiding element / e is guided from the release position to the pressure position or vice versa.

The use of a slide advantageously results in a simple mechanical construction for holding and moving the cleaning head module. In a further embodiment, the cleaning head module is arranged at a free end of a pivoting element, wherein the pivoting element rotatably on the

Sled is stored.

In particular, the pivoting element may have a pivoting arm, wherein one end of the pivoting arm is rotatably mounted on the carriage. At the other free end of the pivot arm, the cleaning head module can be arranged. Furthermore, the at least one return spring element can connect the swivel arm to the slide,

especially its base plate, connect. Further, the above-explained return spring element can connect the swing arm and the carriages.

During a rotational movement of the pivoting element, the cleaning head module can be moved from the release position into the pressure position. Thus, the rotational movement may have at least one directional portion, which is oriented parallel to the pressing direction.

By using a swivel element and thereby made possible

Rotary movement of the cleaning head module is advantageously achieved without additional actuators the Andruckstellung and moves the cleaning head module towards the surface to be cleaned. Also advantageously results in a simple mechanical structure.

In a further embodiment, the previously explained

Reinigungselementbereitstellungs- and the cleaning element receiving device on the carriage, in particular on the base plate of the carriage arranged. Alternatively, the cleaning element supply and the

Cleaning element receiving device on a base plate of the device

arranged. In the first case, the devices are arranged stationarily relative to the carriage. In the second case, the carriage may move relative to the devices.

The device may further include at least one means for detecting or determining the amount of cleaning element still to be provided. Also, the device may comprise a device for detecting or determining the amount of the already recorded, ie spent, cleaning element. Depending on output signals of such a calibration, for example, a user on the Amount of cleaning element still available or a necessary

Replenishment of the cleaning element supply device to be informed.

Are the provisioning and receiving device disposed on the carriage, it is achieved in an advantageous manner that during a cleaning trip only a short

Section of the cleaning element between the supply and

Receiving device extends. This in turn advantageously improves operability.

In a further embodiment, the device comprises at least one device for moving the cleaning element. In this case, the movement may be a movement from the cleaning element providing direction to the cleaning element receiving device. The means for movement may be disposed on the carriage. By means of this device, the cleaning element, even during a movement of the carriage, are moved relative to the carriage. It is also possible for the cleaning element to be moved relative to the cleaning head module during a cleaning run. Alternatively, however, the cleaning element can also be arranged in a stationary manner relative to the cleaning head module during a cleaning run.

In particular, the cleaning element can be moved against the current direction of movement of the carriage relative to the cleaning head module during the cleaning run. This may allow easy transport of the

Cleaning element, e.g. for winding up.

The device for moving the cleaning element can in particular the

Actuate cleaning element receiving device such that the cleaning element discharged from the cleaning element providing device and of the

Cleaning element receiving device is added. For example, the means for moving the cleaning element receiving device rotate such that the cleaning cloth designed as a cleaning element of the

Cleaning element providing device unwound and from the

Cleaning element receiving device is wound up.

This results in an advantageous manner that between two cleaning trips or during a cleaning drive different sections of the cleaning element for or can be moved along the cleaning head module. In this way it can be achieved that sections of the cleaning element not yet used for cleaning are brought into mechanical contact with the print head for cleaning.

In a further embodiment, the cleaning head module comprises a

Pressure element and a Andruckelementhalter, wherein the pressure element is attached to the Andruckelementhalter. By the pressure element is the

Cleaning element brought in the contact pressure position in mechanical contact with the print head, in particular pressed. The pressure element may be formed in particular of silicone. For example, the pressure element may be formed as a silicone pad. However, the use of silicone as a material is exemplary only. Also, the pressure element may be formed of EPDM. This is particularly advantageous for cleaning printheads that print with organic solvent based ink. Also, the material may be a plastic. It is desirable that the material of the pressure element is soft and resistant to ink and to friction. Furthermore, the material should be applied when pressed against the surface to be cleaned. For this purpose, the material may be elastic. Further, the material should be chosen such that there is no scratching of the surface to be cleaned by the material.

The Andruckelementhalter can in this case fastening means for fixing the

Have or form pressure element. In particular, the pressure element is releasably attached to the Andruckelementhalter. Next, the Andruckelementhalter

Guide elements for guiding the cleaning element along the cleaning head module or holding elements for such guide elements. For example, the pressure element holder may comprise at least one deflection roller or a retaining element for a deflection roller. In this case, the cleaning element can be guided by means of the guide elements along a surface of the pressure element, wherein the cleaning element is pressed in the pressure position by the pressure element to the print head.

This results in an advantageous manner that the printhead is well and gently cleaned and not damaged during cleaning.

In a further embodiment, the pressure element is rotatable on the

Pressure element holder stored. By rotating the pressure element, different portions of the cleaning element may advantageously be applied to the printhead be pressed during a cleaning trip. Also can be taken by the rotational movement of the pressure element, the adjoining cleaning element and thus moved relative to the cleaning head module. The rotational movement may be an actuator-supported rotational movement.

In a further embodiment, a surface of a pressing portion of the pressure element, which can also be referred to as a contact surface, convexly curved. The pressure surface may in particular be a surface of the pressure element or at least a portion of this surface.

Preferably, the pressure surface is convexly curved along a longitudinal axis of the pressure element. Further preferably, the pressure surface is also convexly curved along a transverse axis of the pressure element. A convex curvature may mean that the pressure surface is arched outward relative to the Andruckelementhalter and thus towards the print head.

Due to the convex curvature results in an advantageous manner that an increased pressure on the surface to be cleaned can be exercised, what a better

Cleaning possible. It can also be achieved by the curvature that the size of the pressure surface of the. By adjusting various pressure forces

Pressure element can be varied. Also reduces the risk of jamming in a cleaning ride in an advantageous manner.

Furthermore, in particular printheads can be cleaned which have inwardly offset nozzle surfaces.

As an alternative to a convex curvature of the pressure surface, the pressure surface can also be formed in steps.

In a further embodiment, the device comprises at least one device for limiting a movement speed of the cleaning element. This may mean that the cleaning element can only be moved at speeds below a maximum speed from the cleaning element supply device to the cleaning element receiving device. The device for limiting the speed of movement can thus reduce the speed to one limit predetermined maximum speed. The maximum speed can be greater than 0 m / s. Also, the maximum speed can be 0 m / s. In this case, a movement of the cleaning element is prevented.

The device for limiting the movement speed can be designed in particular as a clamping device or comprise such. The clamping device can clamp the cleaning element, in particular to the cleaning head module. Here, a clamping force exerted on the cleaning element can be variably adjusted.

In a further embodiment, the device for limiting the

Movement speed at least one clamping element, wherein the

Cleaning head module and the at least one clamping element are formed and / or arranged such that in the pressure position at least a portion of the cleaning element is clamped by the at least one clamping element, in particular with a predetermined clamping force. In this case, the cleaning element can be clamped to the cleaning head module. The clamping element can move between a clamping position and a release position. Furthermore, the device may comprise a clamping spring element.

In a first alternative, the cleaning head module, in particular the

Pressure element holder, have at least one recess for receiving the clamping element. The clamping element may e.g. on the carriage, in particular the

Base plate, be arranged. Between the clamping element and the

Cleaning head module, the clamping spring element can be arranged. Due to the relative movement between the cleaning head module and the carriage in the

Movement in the direction of pressure can also be a relative movement between the

Clamping element and the cleaning head module during the movement of the

Cleaning head module from the release position in the Andruckstellung done.

If the cleaning head module moves from the release position into the pressure position, then the cleaning element can be clamped by the clamping element. As a result of this relative movement, the clamping element can, for example, be moved toward a guide surface of the cleaning head module, against which the cleaning element bears, and clamp it to this guide surface. Does the cleaning head module move from the Andruckstellung in the release position, the cleaning element can be released by the clamping element. By this relative movement, the

Clamping element, for example, from the guide surface of the cleaning head module, against which the cleaning element is applied, are moved away.

In a second alternative, the clamping element can rotate on the

Cleaning head module attached, in particular stored be. Furthermore, at least one clamping spring element can be provided, which exerts a spring force on the clamping element such that it is moved from a release position of the clamping element into a clamping position of the clamping element. Next, the device can

Include actuating element for the clamping element. The actuator may be attached to the carriage, for example. In this case, clamping element and actuating element can be arranged such that the actuating element the

Clamping element fixed in its release position when the cleaning head module is in the release position of the cleaning head module. If the cleaning head module is moved from its release position into the pressure position, this can

Actuator be moved relative to the clamping element such that the

Movement of the clamping element is released from its release position in the clamping position. If the movement is released, then the clamping element can move due to the spring force in the clamping position. Accordingly, the clamping element located in the clamping position can be moved by the actuating element against the spring force in the release position when the cleaning head module is moved from its Andruckstellung in the release position. By clamping a movement of the cleaning element is limited or prevented, whereby advantageously consumption of the cleaning element can be minimized.

In a further embodiment, the device comprises at least one

Position detection device for detecting a position of the cleaning head module, in particular for detecting a position of the cleaning head module relative to the base plate of the device. The position detection device can in particular be designed as an end position sensor. Preferably, the device comprises two

Endlagenensoren, wherein a first Endlagenensensor detects whether the

Cleaning head module in the starting position and thus located in the release position. Another end position sensor can detect whether the cleaning head module is in the end position and thus in a pressure position. Depending on a detected position of the cleaning head module, a movement of the printing table can be enabled or disabled. In particular, the movement of the printing table can be released when the cleaning head module is in a position in which the cleaning head module is in the release position, for example when the cleaning head module is in its starting position.

Accordingly, the movement of the printing table can be locked when the cleaning head module is in a position in which the cleaning head module is in a pressure position or when the cleaning head module is not in its initial position.

As a result, the risk of unwanted mechanical contact between the cleaning head module and printheads is avoided by a movement of the printing table in an advantageous manner.

In a further embodiment, the device comprises at least one means for applying solvent to at least a portion of the

Cleaning element. In this case, the device can be arranged at least partially or completely on the carriage. Alternatively, the device can be arranged at least partially or completely on the cleaning head module. The device may in this case comprise at least one storage means for storing solvent and a conveying means for conveying the solvent towards the cleaning element.

In a further embodiment, the device for applying

Solvent at least one feed channel in the cleaning head module. The feed channel can be arranged in particular in the pressure element or formed by this. Solvent can be supplied to the cleaning element through the feed channel.

In a further embodiment, the device comprises a device for

Recording of printing material, in particular of ink, the at least one

Printhead or trains it. This device can be designed as a separate component. For example, the means for receiving may be formed trough-shaped, wherein the device may also be attached to the printing table or to a cleaning unit. In this case, the cleaning unit can designate a total of cleaning head module, carriage and base plate. The cleaning unit may comprise further elements, eg elements attached to the cleaning unit.

In a further embodiment, the device comprises or forms a device for the fluidic sealing of the at least one print head

Furnishings off. For example, the device for fluidic sealing can be formed trough-shaped, wherein the device can also be attached to the printing table or on the cleaning unit. This device can be moved relative to the print head in such a way that the print head, in particular the nozzle region, is enclosed by the device in a fluid-tight manner.

Further proposed is a method for cleaning a printhead. The

In this case, the method can be carried out by means of a device according to an embodiment described in this disclosure. Thus, the device is designed such that a method according to one of the embodiments described in this disclosure by means of the device is feasible.

In the method, a cleaning head module is moved in a cleaning direction along the printhead. In particular, the cleaning head module in the

Cleaning direction from an initial position to an end position of the

Cleaning head modules are moved. The cleaning head module is moved during a movement in the cleaning direction from a release position to a pressure position.

Here, the cleaning direction is different from the pressing direction. This means in particular that the pressure direction is not oriented parallel to the cleaning direction. In particular, the pressing direction is oriented perpendicular to the cleaning direction.

This has been explained previously. In the pressure position, at least a portion of a cleaning element, in particular a cleaning cloth, of the

Cleaning head module, in particular of a pressure element of the

Cleaning head module, pressed against a surface to be cleaned of the printhead. In this case, the cleaning head module can be moved in the pressure position along the surface to be cleaned. The surface to be cleaned can in particular be a surface the printhead, is arranged in or on the at least one nozzle of the printhead. This area can also be referred to as a nozzle area.

It is conceivable that the cleaning head module is located during the movement before reaching the surface to be cleaned in the release pitch and is moved shortly before or upon reaching the surface to be cleaned in the Andruckstellung.

Correspondingly, the cleaning head module can be moved counter to the cleaning direction, in particular during the movement from the end position to the starting position, along the print head, the cleaning head module being moved in the movement counter to the cleaning direction from the pressure position into the release pitch.

As previously discussed, the cleaning element is placed in mechanical contact with the print head in the apply position, while in the release split, no mechanical contact between the cleaning element and the print head is made by the cleaning head module.

The cleaning of the surface to be cleaned is achieved by at least a portion of the cleaning element is guided along by the movement in the cleaning direction and possibly further movement of the cleaning element relative to the cleaning head module on the surface to be cleaned. In this case, dirt particles, in particular ink particles, can be absorbed by the cleaning element. As previously explained, the cleaning element may be provided with a solvent. As a result, dried ink can advantageously be dissolved in order to then be absorbed by the cleaning element.

The method advantageously results in a reliable and as complete as possible cleaning of the print head. The cleaning can be done in this case in particular automated.

In another embodiment, during the movement of the

Cleaning head module in the cleaning direction moves the cleaning element relative to the cleaning head module. The movement of the cleaning element can

in particular by a transport of the cleaning element from the previously explained cleaning element providing device for Cleaning element receiving device done. Is the cleaning element as

Formed cleaning cloth, so the movement by winding the

Cleaning cloth done by a take-up roll. In this embodiment, the movement of the cleaning element consists of two parts, namely on the one hand from the movement of the cleaning head module in the cleaning direction or counter to the cleaning direction and the movement of the cleaning element relative to the cleaning head module. The movement of the cleaning element relative to

Cleaning head module can also be effected by a movement of the pressure element.

By the movement of the cleaning element during the movement of the

Cleaning head module is advantageously allows different

Sections of the cleaning element the surface to be cleaned during a

Contact cleaning drive. This allows dirt to be removed more reliably.

Alternatively or cumulatively, the cleaning element is at standstill of

Cleaning head module moves relative to the cleaning head module. In particular, such a movement can take place in the starting position and thus in the release position of the cleaning head module. This can be after or before a renewed

Cleaning drive a new section of the cleaning element so on

Cleaning head module are arranged so that this new section during the subsequent cleaning drive for cleaning in mechanical contact with the surface to be cleaned occurs. This also results in a better cleaning.

In a further embodiment, a movement of the cleaning element is prevented in the pressure position. Alternatively and preferably, in the pressure position, a movement speed of the cleaning element relative to the cleaning head module is limited. The limitation of the movement speed or its prevention can be done for example by clamping. This has been explained previously. As a result, too fast consumption of the cleaning element is prevented in an advantageous manner.

In another embodiment, a device for cleaning the printhead is attached to a printing table, wherein the printing table is moved relative to the printhead before a cleaning run. The movement of the printing table may indicate a relative movement between the printing table and the printing head. This has been explained previously. The In particular, movement of the printing table can only be enabled when the cleaning head module is in the release position. After completion of the movement of the printing table then the cleaning drive can be released. If the cleaning drive is released or a cleaning run is carried out, then the movement of the printing table can be locked.

This results in an advantageous manner an increased reliability in a cleaning.

In a further embodiment, before a cleaning run, printing material is delivered from the print head into a device for receiving printing material. The

Means for recording, as previously explained, also on

Cleaning table to be arranged. For example, For example, the means for receiving may be positioned relative to the print head so that it can deliver printing material into the device. Thus, nozzles of the printhead, in particular before a time

Cleaning trip, to be released. In this case, printing material, in particular ink, which is still in the nozzles of the printhead before the start of the cleaning run, released by the discharge of printing material and also delivered to the device for recording. The means for receiving printing material may also be mechanically attached to the cleaning unit, e.g. be attached to the base plate.

As a result, an improved cleaning of the print head is achieved in an advantageous manner.

In a further embodiment, before and / or after a cleaning run the print head is fluidly sealed by a device for fluidic sealing. This has been explained previously.

In a further embodiment, solvent is applied to at least a portion of the cleaning element before and / or during a cleaning run.

In particular, solvent can be applied to a section which is currently in mechanical contact with the surface to be cleaned or which is brought into mechanical contact with the surface to be cleaned in time after the application, in particular shortly after the application. As a result, in particular a cleaning of dried-on ink particles is made possible or improved.

In a further embodiment, ink is applied from the print head to the at least one section of the cleaning element before and / or during the cleaning run. In this case, the ink serves as a solvent. For example, can the

Cleaning head module are moved under at least one nozzle before the cleaning drive. Then, ink can be carried on the head held by the cleaning head module

Be discharged cleaning element. Afterwards the cleaning trip can be carried out. As a result, it can be advantageously utilized for cleaning that an ink can contain more than 50%, in particular more than 80% or 90% to 95%, of solvent.

This results in an advantageous manner, a simple provision of solvent.

The invention will be explained in more detail with reference to exemplary embodiments. The figures show:

1 is a perspective view of a device for cleaning,

Fig. 2 is a front view of the device shown in Fig. 1 with a

Cleaning head module in release position,

Fig. 3 is a front view of the device shown in Fig. 1 with a

Cleaning head module in pressure position,

4 is a perspective view of a cleaning head module,

5 shows a cross section through the cleaning head module shown in FIG. 4, FIG.

6 is a side view of a pressure element,

7 is a longitudinal view of the pressure element shown in Fig. 6,

8 is a perspective view of a Andruckelementhalters, 9 is a rear view of a device for cleaning,

10 is a perspective view of a device for cleaning in another

Embodiment with a cleaning head module in the release position,

Fig. 1 1 is a perspective view of the device shown in Fig. 10 with a

Cleaning head module in pressure position,

Fig. 12 is a schematic side view of a device with printheads and

a printing table with a cleaning head module in the release position,

13 is a schematic side view of the device shown in FIG. 12 with a cleaning head module in the pressure position and

Fig. 14 is a schematic side view of a device with printheads and

a printing table with a cleaning head module in the release position according to another embodiment.

Hereinafter, like reference numerals designate elements having the same or similar technical features.

Fig. 1 shows a perspective view of a device 1 for cleaning a

Printhead 2 (see, e.g., Fig. 12). The device 1 is used to clean a

Nozzle surface 3 (see FIG. 12) of the print head 2, in particular of dried-on ink particles and further dirt particles.

The device 1 comprises a cleaning head module 4. Furthermore, the device 1 comprises a carriage 5, wherein the cleaning head module 4 movable, in particular

pivotable, is attached to the carriage 5. Here, the cleaning head module 4 is arranged at a free end 6 of a pivot arm 7, wherein the pivot arm 7 is rotatably mounted on the carriage 5, in particular rotatably mounted on a carriage plate 8. Here, the device 1 comprises a pivot bearing 9, which allows a pivoting or pivoting movement of the pivot arm 7. The device 1 further comprises a base plate 10. This base plate 10, as explained in more detail below, on a printing table 1 1 (see, for example, Fig. 12), in particular on a front side of the printing table 1 1, are attached. The device 1 further comprises guide elements 12 designed as guide rails for guiding a movement of the carriage 5. The movement is here guided in and counter to a cleaning direction RR, which is shown in Fig. 1 by an arrow. The carriage 5 in this case performs a linear movement in and counter to the cleaning direction RR. If the carriage 5 is moved in and counter to the cleaning direction RR, the cleaning head module 4 movably mounted on the carriage 5 is also moved in and counter to the cleaning direction RR.

Also shown is a pressure direction AR, wherein the cleaning head module 4 can perform a movement from a release pitch to a pressure position in a movement in the cleaning direction RR, the direction of which has at least one directional portion, which is oriented in the pressing direction AR.

Further, the cleaning head module 4 against movement in a movement

Cleaning direction RR perform a movement of the Andruckstellung in the release pitch, the direction of which has at least one directional portion, which is oriented counter to the pressing direction AR.

Furthermore, the device 1 comprises a device for moving the carriage 5. This device may comprise a motor 13, in particular a servomotor, which, in particular its output shaft, is mechanically connected to the carriage 5 via a spindle drive with a spindle 14. Upon rotation of the output shaft of the carriage 5 moves along the spindle 14, wherein the movement through the

Guide rails 12 is guided.

Furthermore, the device 1 comprises a trained as a cleaning cloth 15

Cleaning element, wherein at least a portion of the cleaning cloth 15 is held by the cleaning head module 4.

Furthermore, the device 1 comprises a cloth dispenser 16 and a

Towel receiving device 17. By the cloth dispenser 16 is the

Cleaning cloth 15 provided in the form of a roll goods, wherein the cleaning cloth 15th can be unwound from the cloth dispenser 16, which is designed as a co-wadeable with the cleaning cloth 15 cylinder. Of the cloth receiving device 17, which is also designed as a wound with the cleaning cloth 15 cylinder, the cleaning cloth 15 is received as a roll, in particular wound. The device 1 further comprises means 18 for moving the

Cleaning cloth 15. The device 18 may in particular be designed as a servomotor which is mechanically coupled to the cloth receiving device 17, in particular to the cylinder of the cloth receiving device 17. By means of the device 18, the cloth receiving device 17 can be rotated, whereby the cleaning cloth 15 is wound and thereby unwound from the cloth dispenser 16. The

Cloth dispensing device 16, the cloth receiving device 17 and the device 18 are attached to the carriage plate 8, wherein the cloth dispensing device 16 and the cloth receiving device 17 are rotatably mounted on the carriage plate 8.

Fig. 2 shows a front view of the device 1 shown in Fig. 1, wherein the cleaning head module 4 is in a release position. Next, the cleaning head module 4 is in a starting position. Fig. 3 shows a front view of the device 1 shown in Fig. 1, wherein the cleaning head module 4 is in a pressure position. Next is the cleaning head module in one

End position.

It is shown here that the device 1 comprises a guide element designed as a further guide rail 19 for guiding the movement of the cleaning head module 4.

On the pivot arm 7, a guide wheel 20 is rotatably mounted. The guide wheel 20 rolls on a guide surface 21 of the further guide rail 19.

As can be seen in FIG. 3, the guide surface 21 has various sections. In a first section 21 a and in a third section 21 c, the guide surface 21 is oriented perpendicular to a pressing direction AR, which is represented by an arrow shown in Fig. 3, oriented. Also, the guide surface 21 in the sections 21 a, 21 c oriented parallel to the cleaning direction RR. The first portion 21 a is connected via a second portion 21 b with the third portion 21 c of the guide surface 21. In the second section 21 b of the guide surface 21, this has a normal vector, the both a share against the cleaning direction RR and a share in

Pressure direction AR has.

When the carriage 5 is moved along the cleaning direction RR from the starting position shown in FIG. 2, in which the cleaning head module 4 is in a release pitch, the cleaning head module 4 is in the release position until the guide wheel 20 engages the second section 21 b reaches the guide surface 21. If the guide wheel 20 is moved in the cleaning direction RR along the second section 21b, the cleaning head module 4 is pivoted, wherein the pivoting movement comprises a directional component in the pressing direction AR. If the guide wheel 20 along the third portion 21 c moves, so is the cleaning head module 4 in the Andruckstellung. If the pressing direction AR is oriented parallel to a vertical device which is oriented counter to a direction of a gravitational force, this becomes

Cleaning head module 4 during movement from the first portion 21 a to the third portion 21 c moves up or pivoted.

It is shown in FIGS. 2 and 3 that the cleaning head module 4 comprises clamping brackets 22, which are mounted rotatably on the cleaning head module 4. The clamps 22 may be spring-mounted on the cleaning head module 4. In particular, the clamping brackets 22 are rotatably mounted on the carriage plate 8. It is further shown that the device 1 has a clamping pin 23 for actuating the clamping bracket 22 which is fixed to the carriage 5, in particular the slide plate 8. In the release division (Fig. 2), the clamping pin 23 is disposed in a space between lower ends of the clamping bracket 22, wherein the clamping pin 23 the

Clamping strap 22 mechanically contacted. Further, ends of the clamping brackets 22 are pushed apart by the clamping pin 23, wherein clamping jaws of the clamping bracket 22 are arranged at the pressed-apart ends opposite ends of the clamping bracket 22. Between these ends, the clamping brackets 22 are each rotatably mounted. In this position, springs over which the clamp 22 on the

Cleaning head module 4 are fixed, biased. The clamps 22 in turn are in a release division. In this release division of the clamp 22 sections of the cleaning cloth 15 are not clamped by jaws of the clamp to a portion of the cleaning head module 4. Rather, it is not

mechanical contact between the jaws and the cleaning cloth 15 given. By the movement of the cleaning head module 4 from the release position shown in Fig. 2 in the Andruckstellung shown in Fig. 3 is the

Cleaning head module 4 moves in the direction of pressure AR. Here, the clamping pin 23 is moved out of the space between the pressed-apart (lower) ends of the clamping bracket 22. Due to the spring tension are now the

Clamping jaws at the opposite (upper) ends of the clamping bracket 22 moves toward the cleaning cloth 15 and press it to portions of the cleaning head module 4. Thus, the clamping bracket 22 are in a clamping position. By thus exerted clamping force is a movement of the cleaning cloth 15 relative to

Cleaning head module 4 in the pressure position prevents or at least one

Movement speed of the cleaning cloth 15 is limited relative to the cleaning head module 4. Due to the movement of the cleaning head module 4 from the pressure position shown in FIG. 3 into the release position shown in FIG. 2, the cleaning head module 4 is moved counter to the pressing direction AR. Here, the clamping pin 23 is moved into the space between the (lower) ends of the clamping bracket 22, whereby they are pressed apart against the spring tension. The jaws at the opposite (upper) ends of the clamping bracket 22 are moved away from the cleaning cloth 15 and give the movement of the

Cleaning cloth 15 free. Thus, the clamps 22 are again in the

Release position.

4 shows a cleaning head module 4 in a perspective view. The

Cleaning head module 4 comprises a pressure element 24 and a Andruckelementhalter 25. The Andruckelementhalter 25 has guide rollers 26 for guiding the

Cleaning cloth 15 (see, e.g., Fig. 1). Here, the cleaning cloth 15 is guided by means of the deflection rollers 26 such that a portion of the cleaning cloth 15 along an upper surface, in particular along a surface 31 of a

Andruckabschnitts 30, the pressure element 24 is guided. The pressure element 24 is releasably attached to the Andruckelementhalter 25. For this purpose, the Andruckelementhalter 25 has a dovetail-shaped groove 27 in cross-section, in which a foot section 28 of the pressure element 24 may be arranged.

Fig. 5 shows a cross section through a cleaning head module 4 in another

Embodiment. Shown again is the pressure element 24, which on the Andruckelementhalter 25 is attached. In the embodiment shown in Fig. 5, the Andruckelementhalter 25 on an underside in cross section

Dovetail-shaped groove which serves to receive a clamping pin 23. The clamping pin 23 can in this case be attached to the carriage 5, in particular on the carriage plate 8. If the cleaning head module 4 is moved into the pressure position, cantilevered sections of the clamping pin 23 clamp sections of the cleaning cloth 15 on deflection rollers 26 of the cleaning head module 4

previously explained, by such a clamping also prevents the movement of the cleaning cloth 15 in the Andruckstellung or a

Movement speed of the movement of the cleaning cloth 15 are limited. In Fig. 5 it is shown that the clamping pin 23 and the Andruckelementhalter 25 are mechanically connected via a spring 29. In the Andruckstellung the spring 29 is stretched and generates a spring force, the Andruckelementhalter 25 towards the

Clamping pin 23 pulls. If the cleaning head module 4 moves from the pressure position into the release position, then the pressure element holder 25 is pulled towards the clamping pin 23 due to the spring force. This is the clamping of sections of the

Cleaning cloth 15 lifted to the pulleys 26, so that the movement of the cleaning cloth 15 is released. This allows in the release position to move the cleaning cloth 15 and thus still unused portions of the

To arrange cleaning cloth 15 on the surface 31, the pressure portion 30.

FIG. 6 shows a side view of a pressure element 24. The

Pressure element 24 comprises a foot section 28 and a pressure section 30. In the side view shown in FIG. 6, it can be seen that the pressure element 24 is mushroom-shaped in cross-section. It is further shown that a surface 31 of the pressing portion 30 along a transverse direction convexly curved, that is curved outwards.

FIG. 7 shows a longitudinal view of the pressure element 24 shown in FIG. Here, it is shown that the surface 31 of the pressure portion 30 along a longitudinal direction of the pressure element 24 is convex, so arched outward Shen.

FIG. 8 shows a perspective view of a pressure element holder 25. Here, in particular, the dovetail-shaped groove 27 is shown. Further are shown receiving means 32 for receiving deflection rollers 26 (see, for example, Fig. 4).

Fig. 9 shows a rear view of a device 1 for cleaning. In this case, in particular, the swivel arm 7 can be seen. A central portion of the pivot arm 7 is connected via spring elements 33 to the carriage 5, in particular to the carriage plate 8. The spring elements 33 exert a restoring force on the pivot arm 7, when the cleaning head module 4 is in the Andruckstellung. The restoring force assists or causes the movement of the cleaning head module 4 from the pressing position to the releasing position when the carriage 5 is moved against the cleaning direction RR (see, for example, Fig. 1) from the end position to the home position.

Fig. 10 shows an apparatus 1 for cleaning a print head 2 (see, e.g., Fig. 12) in another embodiment. In contrast to the embodiment shown in FIG. 1, the cloth dispensing device 16 and the cloth receiving device 17 are arranged on the base plate 10 of the device 1. In Fig. 10 here is the

Cleaning head module 4 shown in the release position.

Also shown is a spring element 33, which connects the free end of the swivel arm 7 with the carriage 5, in particular its base plate 8.

In the embodiment of the device 1 shown in FIG. 10, cleaning cloth 15 is unwound from the cloth dispensing device 16 during the movement of the carriage 5. However, this does not exclude that the cleaning cloth 15 also relative to

Cleaning head module 4 is moved. In this embodiment, preferably both the wipe-dispensing device 16 and the wipe-receiving device 17 can be operated in an actuator-supported manner. This allows the winding of the cleaning cloth 15 before, during and / or after a cleaning trip.

Also shown is a protective plate 34, which is also secured to the base plate 10 and extends into an intermediate space between the tissue dispensing device 16 and the tissue receiving device 17.

In Fig. 1 1, the device 1 shown in Fig. 10 is shown, wherein the

Cleaning head module 4 is in the pressure position. According to the explanations to Figs. 3 and 4, the cleaning head module via a not shown

Guide along the other guide rail 19, in particular along the guide surface 21 with the illustrated three sections 21 a, 21 b, 21 c out.

Position sensors for detecting a position of the cleaning head module 4 are not shown in the figures explained above. In particular, these position sensors may be designed as end position sensors which detect whether the cleaning head module 4 is in the starting position or in the end position.

Fig. 12 shows a schematic side view of a printing table 1 1 with an attached cleaning unit. In particular, a base plate 10 is a

Device 1 according to the invention attached to the printing table 1 1. Schematically illustrated are the cleaning head module 4, the free end 6 of the pivot arm 7, the carriage 5 and the Tuchaufnahme- and cloth dispensing device 16, 17th

In the view shown in Fig. 12, the cleaning direction RR (see, e.g., Fig. 1) is oriented perpendicular to the drawing surface and away from the viewer.

Shown are printheads 2 with nozzle surfaces 3. The nozzle surfaces 3 in this case have the outlets of nozzles of the printheads 2. In Fig. 12 it is shown that the nozzle surface 3 is arranged in a recess on an underside of the print heads 2.

Further illustrated is a vertical direction z and a longitudinal direction x of a

Reference coordinate system. The printheads 2 can be fixed relative to the

Reference coordinate system can be arranged. The printing table 1 1 can be movable in and against the longitudinal direction x, in particular be moved by actuators. An ink emission direction may be oriented opposite to the vertical direction z. The pressing direction AR is in this case oriented parallel to the vertical direction z. After and / or before a printing process, the cleaning head module 4 by a

Movement of the printing table 1 1 are positioned with respect to the vertical direction z under a printhead 2 to be cleaned. During this positioning, the cleaning head module 4 is in the release position. With regard to the vertical direction 7, the cleaning head module 4 is in the release position below a position of the cleaning head module 4 in FIG

Pressure position.

In Fig. 13, the device 1 shown in Fig. 12 is shown with the printing table 1 1, wherein the cleaning head module 4 is in the pressure position. Here it is shown that the cleaning cloth 15 is pressed by the pressure element 24 (not shown) to the nozzle surface 3 of the print head 2. Further, the cleaning cloth 15 is guided along the nozzle surface 3 by the movement in the cleaning direction RR. As a result, the nozzle surface 3 is cleaned.

It is possible that the cleaning cloth 15 during movement of the carriage 5 in or against the cleaning direction RR movement relative to

Cleaning head module 4 executes. This movement can be effected, for example, by actuation of the cloth receiving device 17, in particular by winding up the cleaning cloth 15. Alternatively, the pressure element 24 may also be moved, for example rotated. By a frictional engagement between the surface 31 of the

Pressing portion 30 (see, for example, Fig. 6) and the cleaning cloth 15, a movement of the cleaning cloth 15 relative to the cleaning head module 4 can then be effected. In this way, it can be achieved that during the cleaning run along the nozzle surface 3 clean sections of the cleaning cloth 15 in mechanical contact with the

Nozzle surface 3 are brought.

Fig. 14 shows a schematic side view of a printing table 1 1 with an attached cleaning unit in a further embodiment.

The embodiment shown in FIG. 14 differs from the embodiment shown in FIG. 12 in that the cleaning unit has a device 35 designed as a trough for receiving printing material of the at least one

Printhead 2 includes. The tub 35 is in this case attached to an end face of the printing table 1 1 and to a base plate 10 of the device 1. In particular, the trough 35 is arranged between the front side and the base plate 10.

The trough 35 is open to an upper side and thus to the printheads 2. By a movement of the printing table 1 1, it is possible, before a cleaning trip the tub 35 to be positioned under a printhead 2 to be cleaned. Then, this printhead 2 can emit ink toward the tray 35, and the ink is then picked up by the tray 35. This can be referred to as so-called free printing.

This allows dried ink particles in the nozzles of the printhead 2 to be removed before the cleaning run.

Furthermore, the embodiment illustrated in FIG. 14 differs from the embodiment illustrated in FIG. 12 in that the cleaning unit comprises a device 36 for fluidically sealing the print heads 2. The device 36 is fixed in the embodiment shown in FIG. 14 on the further end face 36 of the printing table 1 1. However, it is also possible to arrange the device 36 between the printing table 1 1 and the trough 35 or between the trough 35 and the base plate 10 or between the base plate 10 and the printing table 1 1.

It is shown that the device 36 has or forms receptacles for the printheads 2. The device 36 may e.g. a sealing frame 37, wherein on a top side of the sealing frame 37 a sealing element 38, e.g. a foam rubber sealing element, is arranged. The sealing element 38 may have recesses 39 for the nozzle surface 3.

By a movement of the printing table 1 1, it is possible to position the device 36 under the print heads 2 to be cleaned. Further, the device 1 may additionally include an unillustrated actuator to move the device 36 away from the printheads 2 and toward the printheads 2. Alternatively, a manual positioning of the device 36 is conceivable. The device 36 may thus be positionable in a sealing position. In this sealing position, the print heads 2 are sealed fluid-tight. In this sealing position, the sealing element 38 may comprise the nozzle surfaces 3. Further, the device 36 may also be positioned in a release position, wherein in the release position, the print heads 2 are not sealed fluid-tight.

As a result, drying of ink particles can advantageously be avoided. It is possible that the trough 35 and / or the device 36 is part of the cleaning unit or part of the device 1 is / are. Also, the printing table 1 1 part of

Cleaning unit or part of the device 1 be.

LIST OF REFERENCE NUMBERS

1 device for cleaning

2 printhead

3 nozzle area

4 cleaning head module

5 sleds

6 free end

7 swivel arm

8 carriage plate

9 pivot

10 base plate

1 1 printing table

12 guide rail

13 engine

14 spindle

15 cleaning cloth

16 cloth dispenser

17 cloth receiving device

18 engine

19 more guide rails

20 guide wheel

21 guide surface

21 a, 21 b, 21 c sections of the guide surface

22 clamp

23 clamping pins

24 pressure element

25 pressure element holder

26 pulleys

27 groove

28 foot section

29 clamping spring

30 pressure section

31 surface

32 recording devices 33 spring elements

34 protective plate

35 tub

36 Device for fluidic sealing

37 sealing frame

38 sealing element

RR cleaning direction

AR pressure direction

z vertical direction

x longitudinal direction

Claims

claims

1 . Device for cleaning a printhead (2), wherein the device (1) engages

Cleaning head module (4), wherein the cleaning head module (4) in and against a cleaning direction (RR) is movable, wherein the

Cleaning head module (4) is movable from a release position into a pressure position during a movement in the cleaning direction (RR) and in a movement counter to the cleaning direction (RR) from the pressure position into the release position,

characterized in that

the cleaning direction (RR) is different from a pressing direction (AR).

2. Device according to claim 1, characterized in that the device (1) at least one guide element for guiding the movement of the

Cleaning head module (4) in and against the cleaning direction (RR) and / or at least one guide element for guiding the movement of the

Cleaning head module (4) in and against a pressing direction (AR) comprises.

3. Apparatus according to claim 1 or 2, characterized in that the device (1) comprises a carriage (5), wherein the cleaning head module (4) is movably arranged on the carriage (5).

4. Apparatus according to claim 3, characterized in that the

Cleaning head module (4) at a free end (6) of a pivot arm (7) is arranged, wherein the pivot arm (7) is rotatably mounted on the carriage (5).

5. Apparatus according to claim 3 or 4, characterized in that a

Cleaning element providing and the cleaning element receiving device on the carriage (5) or on a base plate (10) of the device (1) are arranged.

6. Device according to one of claims 1 to 5, characterized in that the device (1) comprises at least one means for moving the cleaning element.

7. Device according to one of the preceding claims, characterized in that the cleaning head module (4) comprises a pressure element (24) and a Andruckelementhalter (25), wherein the pressure element (24) on the Andruckelementhalter (25) is attached.

8. The device according to claim 7, characterized in that the pressure element (24) is rotatably mounted on the Andruckelementhalter (25).

9. Device according to one of the preceding claims, characterized

characterized in that a surface (31) of a pressure portion (30) of the pressure element (24) is convexly curved.

10. Device according to one of the preceding claims, characterized

in that the device (1) comprises at least one device for limiting a movement speed of the cleaning element.

1 1. Apparatus according to claim 10, characterized in that the means for limiting the speed of movement comprises at least one clamping element, wherein the cleaning head module (4) and the at least one

Clamping element are designed and / or arranged such that in the

Andruckstellung at least a portion of the cleaning element is clamped by the at least one clamping element.

12. Device according to one of the preceding claims, characterized

characterized in that the device (1) at least one

Position detecting device for detecting a position of

Cleaning head module (4) includes.

13. Device according to one of the preceding claims, characterized in that the device (1) at least one device for applying

Solvent on at least a portion of the cleaning element comprises.

14. The apparatus according to claim 13, characterized in that the means for applying solvent at least one feed channel in

Cleaning head module (4).

15. Device according to one of the preceding claims, characterized in that the device (1) comprises or forms a device for receiving printing material of the at least one print head (2).

16. Device according to one of the preceding claims, characterized in that the device (1) comprises means for fluidic sealing of the at least one print head (2) or forms.

17. A method for cleaning a printhead (2), wherein a cleaning head module (4) in a cleaning direction (RR) along the printhead (2) is moved, wherein the cleaning head module (4) upon movement in the cleaning direction (RR) from a release position is moved in a Andruckstellung, wherein in the Andruckstellung at least a portion of a cleaning element of the cleaning head module (4) is pressed against a surface to be cleaned of the print head (2), wherein the cleaning direction (RR) of a pressing direction (AR) is different.

18. The method according to claim 17, characterized in that during the

Movement of the cleaning head module (4) in the cleaning direction (RR), the cleaning element is moved relative to the cleaning head module (4) and / or at standstill, the cleaning element is moved relative to the cleaning head module (4).

19. The method according to claim 17 or 18, characterized in that in the

Pressure position prevents movement of the cleaning element or a movement speed is limited.

20. The method according to any one of claims 17 to 19, characterized in that a device (1) for cleaning the print head (2) on a printing table (1 1) is fixed, wherein the printing table (1 1) before a cleaning drive relative to

Printhead (2) is moved.

21. Method according to one of claims 17 to 20, characterized in that prior to a cleaning drive, printing material is delivered from the print head (2) into a device for receiving printing material.

22. The method according to any one of claims 17 to 21, characterized in that before and / or after a cleaning drive the print head (2) of a device for sealed fluid-tight seal.

23. The method according to any one of claims 17 to 22, characterized in that before and / or during a cleaning drive solvent is applied to at least a portion of the cleaning element.

24. The method according to claim 23, characterized in that before and / or

during the cleaning run, ink is applied from the printhead (2) on the at least one portion.