DE2343099B2 - INKING UNIT FOR PRINTING MACHINES - Google Patents

Description

20. Inking unit according to one of claims 15 to ink dispenser and several rollers in one from-19, characterized in that the pressure means ₁₅ are housed exchangeable housing (DT-OS for driving the distribution rollers (7, 8) is air. 2025 676) . According to his training, it is

an inking unit for office or data processing machines that work with stamp ink or the like, control of the amount of paint is not possible.

To generate axial movements for several

The invention relates to an inking unit for rere distribution rollers of inking units, has been proposed printing machines, in particular for indirect printing (DT-OS 2 235 313), the wheel rollers assigned to indirect high pressure, the colored actuating piston to be arranged in series for color storage and color transfer, Ver - - ₅ nen and a common control device to prescribe / friction and inking serving, touching hen, which contains a movement, a stroke length rollers, to the printing ink consists of an ink and / or a speed control, mostly by means of a lifter , a contact roller oüer this represents a complex device with a surface that can be transferred directly from the ductor. Ben represent a number of difficult elements.

Usually, the inking unit of a printing ₃₀ object of the invention is to provide an inking arrangement of the above machine, as well as an offset press of a type mentioned at the large simple construction number increases from individually in the machine frame Gela little space as possible in claim , nevertheless, whipped rollers. Such an inking unit also requires a quick supply of color to the printing forme ner accommodation allows a correspondingly large space and a perfect coloring of the other machine. In many cases, the inking unit _{rollers 35} printing form are guaranteed and the requirements are only accessible with difficulty, which leads to problems with accessibility in a particularly advantageous manner

Way takes into account.

In the case of an inking unit of the type mentioned at the beginning

, ", The invention provides that storage rollers, changie-

need to be replaced. Notwithstanding these friction rollers ₄₀ and form rollers Rende like satellites aspects is the formation of dyes around a central transfer roller around angeord-

~ "" 'net that all the reels are in a cassette-like manner

Bracket are housed, which can be used as an exchangeable unit in the printing machine and from the

thus the coloring of the Formzyiinder a ₄₅ water is removable, and that at least one of the important roles plays. Known inking units have rollers at their work a coupling sleeve on a large number of individual inking unit rollers, which, with a driven shaft journal, is linked to the expectation that a favorable printing machine can be brought into engagement. To achieve proportions when coloring. Such an inking unit is simple and simple

among other things, an expensive way of addition, and from ₅₀ requires little space for its accommodation, the reasons mentioned above not as This is of particular advantage. Inking units designed according to the invention can also be used when the space on a printing press is limited or only possible

seeing the rollers can lead and makes the washing process cumbersome and time-consuming. Corresponding also rushes if one or more inking unit rollers

factory is of particular importance in a modern printing press because the requirements the print quality is getting higher and higher

can be viewed optimally.

A tube printing machine with several inking units is known (CH-PS 255 988), in which all

Inking units between two bearing plates held ₅₅ a compact construction of a printing machine, approximately and as a whole with this about a vertical axis fixed to the axis of a multicolor printing machine for indirect machines. This pressure. Despite its compactness, this ensures that when working on the stationary machine, the inking unit according to the invention with the central one to provide access to the cliché cylinders. Transfer roller around in multiple contact. Interchangeability of inking units is not _due to rollers that are arranged in a rapid manner

Color for the printing form and perfect coloring of the latter, with ghosting being avoided and no negative effects from a

give.

In a machine for printing cylindrical parts such as can bodies and the like (U.S. Pat
3 371603), parts of the printing unit itself are designed as removable units. Each of the same ₆ In addition, there is the advantage that the on the includes a plate cylinder with drive element machine and on the inking unit itself, adjusting elements and also an inking unit with inking unit that is permanently assigned to the plate cylinder.

Color return occur.

Work is made easier and quick implementation of conversions or conversions is possible.

is borrowed. The inking unit can be installed quickly, is easy to handle and also allows important elements to be easily replaced if necessary.

Furthermore, the inking unit can be cleaned easily. There is no need to wash the inking unit rollers more to be done in the machine itself, but can be done independently. This can for example done in a device tailored entirely for this purpose, so that the washing process can be carried out quickly, thoroughly and with little manual labor.

Another particularly important advantage is that downtimes of the printing press are entirely can be significantly reduced because the washable and for this purpose out of the printing machine Immediately replace the removed inking unit with a unit that has already been washed in the meantime with which a new printing process can then begin. In addition, in a printing press several inking units according to the invention are available, which If necessary, have them used immediately.

In the inking unit according to the invention, the holder receiving the inking unit rollers is expedient formed by two side parts which are connected to one another by struts running parallel to the rollers are. This is an uncomplicated, space-saving design.

Appropriate is a laterally over the holder of the inking rollers to the outside and with the Axis of the transfer roller rotatably connected coupling sleeve with a crossed by a pin axial opening for receiving a shaft journal provided with a transverse slot.

Such a design is advantageous, for example, when the movement of the inking unit when inserting and removing takes place parallel to the axles of the inking unit rollers.

A special feature of the invention is that at least one applicator roller with the Transfer roller and a distribution roller is in contact.

Compared to known designs, in which one applicator roller only with one other Roller is in contact, results from the contact of the application roller provided according to the invention with two other inking rollers a particularly advantageous color transfer and coloring. A print image remaining on the application roller from the previous inking process becomes more desirable Way destroyed quickly, so that no adverse effect on the subsequent coloring process is caused.

If the inking unit has two application rollers, the design can advantageously be made in such a way that the two application rollers are in contact with the transfer roller.

The invention also provides that the distribution roller or Reibwalzcn of the inking unit together with Mountings provided at both ends form a unit and can be used as such in the holder and can be removed from it.

This has the great advantage that the distribution rollers, which are particularly stressed parts, can be exchanged or replaced quickly and easily.

To fix the friction rollers in the holder are resilient in an expedient embodiment Brackets or the like. Provided on the one hand on parts of the Attack bracket and on the other hand on the fixed bearing bodies of the bearings of the distribution rollers and these in elastic contact with storage rollers and one of the application rollers of the inking unit keep.

A particularly advantageous embodiment of the invention is that the applicator rollers each are mounted with their ends in adjustable bearing pieces relative to the bracket.

With an inking unit placed on a receptacle, there is thus an adjustment of the application rollers possible relative to the plate or forme cylinder, whereby the training can be met by name. that the setting can also be made while the machine is running. An example of one Execution will be explained in detail below.

According to a further feature of the invention is to generate the traversing axial back and forth Movement of the friction roller is provided with a pressure medium drive which is operated by means of a control valve or the like. Can be controlled alternately.

This represents a particularly advantageous embodiment. The separate drive means for the distribution roller makes redundant.

It can in particular be so that the distribution rollers are rotatable and axially at both ends are slidably mounted in fixed bearing bodies that each bearing body has a cylinder with a Forms a cylinder space that can be connected to a pressure medium line and in which a piston can be displaced can be acted upon on one side with pressure medium and on the other side as a system for an axle journal the distribution roller is used, the cylinder space of the one bearing body in each case by means of the controllable valve Pressure medium can be supplied, while the cylinder space of the other bearing body is under pressure can be relieved and vice versa.

The two bearing bodies expediently point at their end faces to bear against side parts of the holder certain support surfaces.

The execution can also be made so that in the side parts of the holder at least one pressure medium line is provided in each case. how this will be explained in detail will. Connection openings of such pressure medium lines can be provided at such locations that they align with corresponding connection openings of pressure medium lines, which are in support brackets for Recording of the inking unit on the printing press are provided.

As a pressure medium for the drive of the distributor roller or distributor rollers, with special Advantage air used.

Further features of the invention result from; the claims, in which a Ausführungsbeispie of the subject matter of the invention is shown. It shows Fig. 1 a placed on a pedestal Inking unit in front view or in section along the line I-I in Fig. 2,

FIG. 2 shows a side view of FIG. 1, FIG. 3 shows a distribution roller of the inking unit, partially ir Cut,

4 shows a modified embodiment of a Farl wcrks with adjustable applicator rollers and 5 shows a section along the line V-V in FIG. The inking unit cn shown in FIGS. 1 and 2

iiiiit a central transfer roller 1, five storage rollers 2, 3, 4, 5, 6, two rcib rollers 7, 8 and two applicator rollers !! 9, 10, all of these latter Inking unit rollers 2 to 10 are arranged like a satellite around the transfer roller 1. the Storage rollers 2, 3, 4, 5, 6, the transfer roller 1 and the application rollers 9, 10 are one in total in the side parts 12 formed by two plates with the numeral 11 mounted bracket, the bearings being carried out by conventional means and are therefore not shown separately. The plates forming the side parts 12 are through four struts 13 connected to one another, the collars 13a resting on the inner sides of the side parts 12 have and are screwed onto the outside nuts 13fc.

The friction rollers 7, 8 are mounted at both ends in bearing bodies 14 (Fig. 2 and 3), with which they each form a unit that can be completely removed from the holder 11 and inserted into the same. The fixing of each distribution roller 7, 8 in the holder 11 takes place by means of two resilient brackets 15, the ends of which engage under the two struts 13 located on the relevant side of the holder 11 (see in particular Fig. 1). while in their intervening area at one point on the Lateral bearing bodies 14 of the friction roller 7 or 8 rest and the le.ztere thus in elastic contact on a storage roller 2 or 6 and one of the two application rollers 9 b; 'w. 10 holds. By solving the two Bracket 15 can thus quickly remove the distribution roller 7 or 8 from the holder 11 if necessary and vice versa can also be used again.

The storage rollers 2 to 6 are all in contact with one another. Also, three of them have namely the rollers 2, 4, 6, contact with the central transfer roller 1. With the latter are also both application roller η 9.10 in contact. In addition, the two application rollers 9, 10 still have one second contact point within the inking unit, namely with the two distribution rollers 7 and 8, which in turn each have contact with a storage roller 2 or 6.

The ink can be supplied from an ink fountain 16, for example, by means of a lifter 18 take place, which takes over the color from a ductor roller 17 and transfers it to an obeic lateral storage roller 3 gives up. As is readily apparent from Fig. 1, the paths from this storage roller 3 to the two application rollers 9 and 10, which are in contact with a plate cylinder 19, which is only partially indicated are of different lengths.

With an inking unit designed in this way, a rapid supply of color, a destruction of the each from the previous printing process originating from Druckmusier and a particularly good coloring of the plate cylinder 19 achieved with very economical ink consumption, with the additional advantage a simple and compact structure of the inking unit.

In the illustrated embodiment, the transfer roller 1 is driven. It has a coupling sleeve 22 fastened on its axis 21 (FIG. T) with an axial opening 24 traversed by a pin 23 for receiving a driven shaft journal 26 of a printing press provided with a transverse slot 25.

As indicated in FIG. 2 by the double arrow 27. the coupling or uncoupling takes place by axial Pushing into one another or moving apart of the two coupling parts 22 and 26. This movement can e.g. B. running through the shaft journal 26, which then corresponding to the printing press is slidably guided. But it can also be so that the shaft journal 26 on the printing machine has a fixed axial position and the inking unit with its holder when inserted into the working position

ίο or when leading out of this a corresponding executes axial movement parallel to the axes of the inking unit rollers. The latter is said below further explained.

Should the inking unit be transverse to the axial direction of the Inking rollers can be used in the printing machine and removed from it, so can z. B. provide an extension on the axis of the relevant inking unit roller as a coupling part, one of which can be inserted from the side into the transverse slot of a drive journal of the printing machine Has approach.

As shown in Figs. 1 and 2, the two are at rest Side parts 12 of the holder 11 of the inking unit on bearing surfaces 31, which in turn are connected to each other connected side cheeks 32 of a frame, otherwise not shown, are attached. the Connection of the bearing surfaces 31 with the side cheeks 32 can be such that the bearing surfaces 31 can be adjusted by small amounts relative to the side walls 32 of the frame for adjustment purposes.

Merely as an example of such a setting option are in Fig. 2 between adjacent surfaces of the side cheeks 32 and the support surfaces 31 forming support brackets 33 interchangeable intermediate layers 34 indicated, which after minor Loosen screw bolts 35, which connect the support brackets 33 to the side cheeks 32, against those of a different thickness can be exchanged. The support brackets 33 are used with the bearing surfaces 31 only to accommodate the inking unit, an adjustment can be made through such an adjustability of the support surfaces 31 can be achieved relative to a plate or forme cylinder. Furthermore can but the execution must also be such that in the support brackets 33 at the same time the plate cylinder 19 is also mounted. Then can through the aforementioned adjustability the plate cylinder 19 together with the support surfaces 31 for the inking unit relative to a transfer cylinder, such as a rubber cylinder, adjusted.

The frame to which the side walls 32 belong can, regardless of whether it is only the support surfaces 31 for the inking unit or whether the plate cylinder is also stored in it, in the printing press displaceable parallel to the axis of the plate cylinder 19 or to the axes of the inking unit rollers 1 to 10 be led. This would then be the movement indicated by the double arrow 27 in FIG. 2. The inking unit can be lifted as a cassette from the support surfaces 31 and again on these support surfaces 31 must be put on. The side parts 12 of the holder 11 of the inking unit are, as in particular FIG. 1 shows at their lower ends with a right-angled

Provided recess corresponding to the upwardly directed projections on the support brackets 33, whereby a perfect positioning of the inking unit on the support surfaces 31 is achieved. If

609517/283

ίο

required, further projections or stops can be provided on the support surfaces 31, which border the side parts 12 of the holder 11 on the outside and thus also secure the position in the lateral or offer axial direction.

The definition of the inking unit on the support brackets 33 can be done with the help of screws, union brackets. Clamping devices, quick-release fasteners or other suitable elements that speed of the alternating frequency can be provided.

4 and 5 show an embodiment with applicator rollers 9 ', 10' which can be adjusted in the unit itself. 4 shows a view of the inside of a side part 12 'of a holder 11' the rest largely corresponds to that of FIGS. Also the arrangement of the inking rollers 1 'to 10' g) essentially corresponds to that of the embodiment already explained. Generally therefore

are available to the specialist and not ίο corresponding parts with the gleisonder are shown. chen reference numerals, with only the

Numbers of the embodiment according to FIGS. 4 and 5, an index line is added. The position of the inking unit rollers 1 '

As FIG. 3 shows, each of the distribution rollers 7, 8 has an axle journal 41 at both ends, which is shown in FIG the associated bearing body 14 in a ball guide 10 'is shown in Fig. 4 with dash-dotted lines.

tion 42 is stored in such a way that the stub axle 15 indicates. The other (opposite) side wall 41 both rotate with the distribution roller 7, 8 and one of the holder 11 'has the same parts as those in FIG

can perform axial displacement movement relative to the bearing body 14. The two bearing bodies 14 are in the installed state of the distribution roller 7,8 with frontal support surfaces 43 on the inside of the Side parts 12 of the holder of the inking unit. In its interior, each bearing body 14 forms a cylinder space 44, in which a piston 46 provided with a seal 45 is freely displaceable. Of each Fig. 4 shown side wall 12 'in a corresponding arrangement.

While the inking unit rollers 2 ', 3', 4 ', 5', 6 'and the transfer roller 1' as in the execution 1 and 2 are mounted in the side parts 12 ', and the distribution rollers 7 ', 8' also in contact with by resilient brackets 15 'which press on their bearing housings every two other rollers are held

Cylinder space 44, a pressure medium channel 47 leads to 25 the two application rollers 9 ', 10' in the execution

end support surface 43 of the bearing body 14, the mouth 48 of the pressure medium channel 47 of a seal 49 is surrounded, which is attached to the inside of the relevant side part 12 of the bracket 4 and 5 each supported with their ends in bearing pieces 61, which in turn are supported by journals 62 are rotatably held in such a way that they pivot about the pin 62 in the direction of the arrows 63

11 creates. Inside each side part 12 is a 30 (FIG. 4) in a plane parallel to the side part 12 '

Pressure medium line 50 is provided, the mouth 57 of which, when the friction roller 7, 8 of the mouth 48 is installed of the pressure medium channel 47 is exactly opposite.

The two pressure medium lines 50 of the side parts 12 come from connection openings 58 (FIG. 1 and 2), which are located in the bearing surfaces 31 of the side parts 12 and which are on the support brackets 33 mounted inking unit with connection openings 59 of air lines 51 in the brackets 33 are aligned. These can perform. The pins 62 are inserted into the side part 12 'and rigidly connected to it. They are arranged approximately at the points, each in the extension of the line of contact between the relevant application roller 9 'or 10' and the transfer roller 1 'lie. It has been shown that with such an arrangement gives very good results.

The execution can also be made in this way

Druckmitteileitungen put in tubes Schlau- ₄₀ to that in each case two bearing pieces 61 on one part

Chen or lines 51 and are connected to a controllable valve 52, which by means of an electromagnetic, pneumatic or other suitable actuator 53 are stored in a steady, concentric to the central axis of the Transfer roller 1 'is arranged, for example on a surrounding the axis of the transfer roller 1' Bush or the like. On the roller axis

Change from one position to the other _{can be stored over 45} itself or attached to the side part 12 '

is feasible.

The valve 52 shown has on the one hand a supply line 55 and coming from a compressed air source 54 on the other hand it can be one that discharges into the atmosphere.

The bearing pieces 61 can be viewed as two-armed levers. Each on one lever arm acts as a whole designated by the number 64

Outlet 56 on. Depending on the position of this valve 52 ₅₀ adjusting screw while on the other lever arm

is one of the two cylinder spaces 44 in the bearing bodies 14 z. B. compressed air supplied during the other is relieved to the outside air and vice versa.

a compression spring 65 acts. This can in particular be a disk spring assembly between the two bearing pieces 61 is arranged and thus strives to push them apart. There

In the position of the parts shown in Fig. 3 is ₅₅ by a backlash-free connection between the

the piston 46 in the right bearing body 14 is acted upon with compressed air, while the cylinder chamber 44 in the left bearing body 14 is relieved. Since the pistons 46 directly on the end faces of the journal 41 Reached bearing pieces 61 and the adjusting screws 64 and between their parts and their support Each adjusting screw 64 is designed as a differential screw and has an upper part 64 <

the distribution roller 7, 8 act, they give the latter _6o and a lower part 64b. The upper part 64 <

a movement in the relevant direction when compressed air is applied. The distribution roller 7.8 thus experiences an axial reciprocating movement in the cycle of actuation of the valve 52, as required for trituration with an external thread 66 in one of the side part 12 'protruding, a corresponding inside thread having approach 67 screwed. Except with a key attack, e.g. B. an inside

dcrhch _IS t. The alternating movement can be _{hexagonal in cycle g 5} , at its outer end is the upper part

the operation of the printing press be controlled or 64a also provided with a threaded hole 68, ii

with known means also independently of this, the one end of the lower part provided with a thread 69

acts, with a corresponding adjustable screw part 64b being screwed in

The end of the lower part engages the bearing piece 61. This attack point can /. B. be designed as a hinge connection, the end of the part 64h protrudes between two cheeks of the bearing piece 61 and a transverse pin is pushed through the cheeks and the part 64 b , or it can also be designed in the manner of a blade bearing, the bearing piece 61 a Has a V-shaped transverse groove 70 in which a meilielarüg shaped end of the part 64h is supported, as shown in FIGS. This results in a low-friction connection.

The axes 71 of the two application rollers 9 ', 10' are mounted in the bearing grooves 61 via eccentrics 72, which can be rotated and thus a basic setting enable the application rollers 9 ', 10'. The eccentrics 72 can not be specifically reproduced Medium, e.g. B. locking screws, clamping devices od. Like., In the respective position be determined and secured. It can be used in this way when changing application rollers take into account any existing differences in diameter and the desired system can always be used the relevant application roller 9 'or 10' can be achieved on the transfer roller Γ.

The adjusting screws 64 acting on the bearing pieces 61 allow a particularly advantageous Way an adjustment of each application roller 9 'and 10' with respect to the plate or forme cylinder 19 ' even while the printing press is running. The external thread screwed into the respective ansaiz 67 66 of the upper screw part 64a and that screwed into the internal thread of the latter External threads 69 of the lower screw part 64h have different thread pitches the slope of the former is greater than that of the latter, whereby when turning the upper screw part 64o relative to the because of the connection with the lower screw part 64h held in a non-rotatable manner results in a differential effect, the pivoting of the bearing piece 61 by very small angular amounts and thus extremely sensitive Adjustment of the associated application roller 9 ', 10' is permitted. The arrangement of the bearing pieces 61 and the they supporting pivot pin 62 is so that in the small adjustment paths to be considered the application rollers 9 ', 10' in spite of their presentation relative to the plate or forme cylinder 19 'in perfect condition Contact with the transfer roller 1 remain. The distribution rollers 7 ', 8' can easily each setting movement of the applicator rollers follow, because they are due to the resilient bracket 15 'to di < associated rollers are pressed.

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Inking unit for printing machines, in particular for indirect printing, namely indirect letterpress printing, the inking unit containing touching rollers serving for color storage and transfer, trituration and inking, which can be transferred to the printing ink from an ink fountain by means of a lifter, a contact roller or directly from a ductor is, characterized in that storage rollers (2 to 6), traversing; Distribution rollers (7, 8) and application rollers (9, 10) are arranged like a satellite around a central transfer roller (1) so that all rollers (1 to 10) are accommodated in a cassette-like holder (11) which is an exchangeable unit in the printing machine is removably insertable and from this, and that at least one of the rollers comprises (1 to 10) on its axis, a ™ coupling sleeve (22) is a printing machine can be brought into engagement with a driven stub shaft (26). 2. Inking unit according to claim 1, characterized in that the holder (11) by two Side parts (12) is formed by struts (13) running parallel to the rollers (1 to 10) are connected to each other. 3. Inking unit according to claim 1 and 2, characterized by a side over the holder (11) protruding outward and non-rotatably connected to the axis (21) of the transfer roller (1) Coupling sleeve (22) with an axial opening (24) traversed by a pin (23) towards the Receiving a shaft journal (26) provided with a transverse slot (25). 4. Inking unit according to claim 1, characterized in that at least one applicator roller (9 or 10) is in contact with the transfer roller (1) and a distribution roller (7 or 8). 5. Inking unit according to claim 4, characterized in that that two application rollers (9,10) are in contact with the transfer roller (1). 6. Inking unit according to one of claims 1 to 5, characterized in that the distribution roller or distribution rollers (7, 8) together with at their Both ends provided bearings (14, 42) form a unit and as such in the holder (11) can be used and removed from this. 7. Inking unit according to claim 6, characterized in that for fixing the distribution rollers (7, 8) in the holder (11) resilient brackets (15) are provided on the one hand on parts (13) of the Attack bracket (11) and on the other hand on fixed Bearing bodies (14) of the bearings (14, 42) of the distribution rollers (7, 8) and these in elastic contact with storage rollers (2 or 6) and one of the application rollers (9 or 10) of the inking unit. K. Inking unit according to one of claims 1 to 6, characterized in that the applicator rollers (9 ', 10') each with their ends in relative to Bracket (11) adjustable bearing pieces (61) are mounted. y. Inking unit according to claim X, characterized in that that the bearing pieces (61) on side parts (12 ') of the holder (11) each on one Journal (62) mounted and by means of an adjusting member (64) around the axis of the applicator roller (9 ', 10') parallel axis of the pin (62) are pivotable. 10. Inking unit according to claim 9, characterized in that the bearing pieces (61) are under the force of them in contact with the adjusting member (64) holding compression springs (65). 11. Inking unit according to one of claims 8 and 9, characterized in that as adjusting members adjusting screws (64) are provided for the bearing pieces (61). 12. Inking unit according to claim 11, characterized in that the adjusting screws (64) are differential screws (64a, 646) are. 13. Inking unit according to one of claims 8 to 12, characterized in that the ends (71) of the applicator rollers (9 ', 10') in the bearing pieces (61) are mounted by means of adjustable eccentrics (72). 14. Inking unit according to one of claims 1 to '3, characterized in that for generation the oscillating axial back and forth movement of the distribution roller (7, 8) is a pressure medium drive is provided, which by means of a control valve (52) cd. usual is controllable alternately. 15. Inking unit according to claim 14, characterized in that the distribution rollers (7, 8) on both Ends are each rotatably and axially displaceably mounted in fixed bearing bodies (14), that each bearing body (14) has a cylinder with a pressure medium line (50, 51) connectable Forms cylinder space (44) in which a piston (46) can be displaced, which on one side can be acted upon with pressure medium and on the other hand as a system for an axle journal (41) the distribution roller (7 or 8) is used, the cylinder space in each case by means of the controllable valve (52) (44) of the one bearing body (14) pressure medium can be supplied, while the cylinder space (44) of the other bearing body (14) can be relieved of pressure and vice versa. 16. Inking unit according to claim 15, characterized in that the two bearing bodies (14) on their end faces to rest on the side parts (12) of the holder (11) certain support surfaces (43) have. 17. Inking unit according to claim 16, characterized in that that in each of the side parts (12) of the holder (11) at least one pressure medium line (50) is provided which at one end faces the inner surface of the respective side part (12) has opening mouth (57), and that in each case in the region of the support surface (43) of the bearing body (14) the mouth (48) of a leading to the cylinder space (44) in the bearing body (14) Pressure medium channel (47) is provided in such a way that when the friction roller is inserted into the holder (11) (7 or 8) the mouths (48) of the pressure medium ducts (47) of the bearing body (14) the mouths (57) of the pressure medium lines (50) in the side parts (12) are opposite. IS. Inking unit according to claim 17, characterized in that that on the support surfaces (43) of the bearing body (14) and / or the inner surfaces of the Side parts (12) surrounding the mouths (48) of the pressure medium lines (50) or channels (47) Seals (49) are provided. 19. Inking unit according to one of claims 17 and 18, characterized in that in to put on on support blocks (33) of the printing press serving support surfaces (31) of the side parts (12) of the holder (11) connection openings (58) of the pressure medium lines located in the side parts (12) (50) are provided in such a way that the connection openings (58) when the Inking unit with corresponding connection openings sien. With an inking unit permanently attached to a newspaper printing press (US Pat. No. 3,073,240), color becomes over several, one behind the other arranged rollers on a color drum and from this over others Rollers passed onto a plate cylinder cooperating with a printing cylinder. It is further known that several rollers of an inking unit touch in several places (DT-GM 7148000). gen (59) in the support frames (33) are aligned, ₁₀ An inking unit with numerous rollers, some of which are the connection finings (59), lines (51) for controlled supply and discharge from rollers on the circumference of a storage roller , shows the DT-AS 2 013 321. Ren form pressure medium. Furthermore, an inking unit is known in which a