MXPA97007493A - Method for cleaning ink and coating rollers for cleaning by conta - Google Patents

Abstract

The present invention relates to a method and cleaning system for cleaning ink and coating of contact cleaning rollers. The contact cleaning rollers are located in a turret and as one contacts the cleaning roller they are indexed sequentially out of contact with the image forming surface and in contact with a porous material another contact cleaning roller is indexed in contact with the forming surface of image simultaneously. The porous material has a non-alcoholic solvent applied to clean the cleaning roller surface by contact during contact. The components found create an efficient cleaning solvent for the CCRs including aliphatic ketones and alkylene halides. Aliphatic ketones are alkyl ketones containing from about 1 to about 25 carbon atoms (with a preferred range of about 1 to about 10 carbon atoms). The aliphatic ketones contain solvents such as methyl ethyl ketone (ie the preferred solvent) methyl ketone, ethyl ketone, propyl ketone and butyl ketone. The alkylene halides are alkylene chlorides containing about 1 to about 30 carbon atoms (with a preferred range of about 2 to about 12 carbon atoms). Alkylene chlorides include methylene chloride, ethylene chloride and propylene chloride, the preferred solvent is methylene chloride

Description

BTODO TO CLEAN INK AND RBVBSTrMIBNTO DB ROLLERS DB CLEAN BY CONTACT T? NTgCBNBNTBS DB THE TNVBNCTON This invention relates in general to electrostatic printers and copiers, and more particularly to removing ink and coating from contact cleaning rollers. Contact cleaning rolls (CCRs) are currently used to remove dirt and particles from a moving photoreceptor (such as an AMAT frame). Often, solvent coatings and ink from * bar codes accumulate and adhere to the surface of the CCR. This ink and coating are currently cleaned by hand, detaching them from the CCRs, with solvents and rags. This involves a lot of non-operational time of the machine because the operator must remove any protection and rewind the frame. Also, because the operator must reach the coating equipment to manually clean the CCRs, it is present, a potential safety aspect. The following descriptions may be relevant to various aspects of the present invention and may be briefly summarized as follows: US Pat. No. 5,519,914 granted to Egan, describes a supply of cleaning cloth and pick-up reels mounted by supports without rollers for rotation REF: 25684 with respect to parallel axes spaced in a frame that is connected to a pneumatic cylinder for reciprocating between opposite ends of a rotating process roller of the which is going to clean the surface. The wiper fabric passes over an opening in the structure, and a sponge-based pressure pad that is saturated with cleaning fluid is mounted on the structure to reciprocate towards and away from the opening between an advanced position in which it engages, saturates and displaces the registration portion of the cleaning fabric in contact with the surface of the rotating processing roller and a retracted portion in which the sponge is directed into the structure completely to detach the fabric, which therefore releases the roller of processing. The sponge cushion is retracted and a clean cloth section is advanced over the frame opening each time the frame or structure reaches one of its limit positions. The supply and collection reel assemblies are adjustable to pre-determine the tension that develops in the cleaning cloth -.during its use. The U.S. Patent No. 4,407,219 granted to Dellevoet, describes a brush, especially useful for conditioning the surface of a body in motion such as a fuser roll in an electrostatic copying machine, comprising a fibrous hair, containing capillary absorption fibers that project outward from a structure type absorbent sponge of liquids, to drive liquids from the sponge-like structure and apply them to the surface of the body. The hair may also contain cleaning fibers in the form of monofilaments that remove particulate matter from the surface of the body. The U.S. Patent Application. Serial No. 08 / 505,931, filed on July 24, 1995 under the title "System for Cleaning Eleetrostatographic Imaging ebs", describes a contact cleaning roller system, which includes a structure for protecting the electrostatic image. supporting the system with respect to a moving web having a first main surface and a second main surface, a first contact cleaning roller rotatable in the structure arranged for rolling contact with the first main surface of the web, a second web cleaning roller. rotatable contact supported on the structure arranged for rolling contact with the second main surface of the frame, the second rotatable contact cleaning roller has an axis parallel to the axis of the first rotatable contact cleaning roller, the first contact cleaning roller and the second roller Contact cleaner are placed in the structure to support and guide the moving plot in a trajectory in the form of substantially "S".

DB LA INVENCTOM COMPENDIUM Briefly and in accordance with one aspect of the present invention, there is provided a method for removing the particles from a contact cleaning roller, which comprises removing particles from an image forming surface upon contacting the image forming surface with a first contact cleaning roller, located in a contact cleaning roller turret; indexing the first contact cleaning roller, out of contact with the image forming surface and a second contact cleaning roller, in contact with the image forming surface, in synchronized intervals; placing the first cleaning roller by contact adjacent to a porous material; apply a non-alcoholic solvent to the porous material; and contacting the first cleaning roller by contact with the porous material having the non-alcoholic solvent, to remove the particles therefrom as the second contact cleaning roller removes particles from the second cleaning roller by contact. According to another aspect of the present invention, there is provided a method for cleaning a web, which has a main surface on one side of the web and another main surface on the opposite side of the web, the process is characterized in that it comprises: transport the frame through a substantially "S" shaped path, including a clockwise curved path attached at one end to one end of the curved path in the counterclockwise direction; and maintaining at least one contact cleaning roller in contact with one of the main surfaces, on the inside of the curved path in the clockwise direction, maintaining at least one other contact cleaning roller in rolling contact with the other of the main surfaces on the inside of the curved path clockwise to clean both major surfaces of the weft and maintain at least another second contact cleaning roller, in rolling contact with a porous material having a non-alcoholic component, for cleaning particles removed from the surface of the web, from the other second contact cleaning roller, the other second contact cleaning roller is out of contact with the main surfaces of the web. According to another aspect of the present invention, there is provided a cleaning system with contact cleaning roller, comprising: a structure for supporting the system with respect to a moving web having a first main surface and a second main surface opposed between yes; a first rotatable contact cleaning roller supported on the structure arranged for rolling contact with the first main surface of the frame; a second rotatable contact cleaning roller, supported on the structure arranged for rolling contact with the second main surface of the frame, the second rotatable contact cleaning roller, having an axis parallel to the axis of the first contact roller, rotatable; the first rotatable contact wiper roller and the second rotatable contact wiper roller are placed in the frame to support and guide the moving web in a substantially "S" shaped path; and a device for applying a non-alcoholic solvent to a porous material, the first rotatable contact cleaning roller, and the second rotatable contact cleaning roller, are placed in the structure to be indexed individually in a position adjacent to the porous material, the porous material contacts one of the first rotatable contact cleaning roller and the second rotatable contact cleaning roller for removing particles therefrom, while the other of the first rotatable contact cleaning roller and the second rotatable contact cleaning roller are in-contact with one of the first main surface and the second main surface. According to another aspect of the present invention, there is provided a cleaning system with contact cleaning roller, comprising: a structure for supporting the system with respect to a moving web having a first main surface and a second main surface; a turret of first roller cleaner by contact in the structure; and a first cleaning roller in the structure; the turret of the first contact cleaning roller includes a plurality of rotatable contact cleaning rollers, held in the turret of the first contact cleaning roller; an active one of the contact cleaning roller arranged for rolling contact with the first main surface of the screen and a roller at rest of the contact cleaning rollers, arranged out of contact with the first main surface of the screen and in operative coupling with means of impulse to maintain the rotational speed of the roller at rest; the turret of the first contact cleaning roller is rotatable to sequentially place the cleaning rollers by contact in and out of contact with the first surface of the weft; the first cleaning roller is mounted adjacent the roller at rest in the first contact cleaning roller, for movement in and out of coupling and longitudinally; the first cleaning roller includes an absorbent cleaning material to be placed against the roller at rest; a turret for second contact cleaning roller in the structure adjacent to the turret of the first contact cleaning roller; and a second cleaning roller in the structure; the turret for the second contact cleaning roller includes a plurality of rotatable contact cleaning rollers, supported on the turret of the second contact cleaning roller; an active one of the contact cleaning rollers in the turret of the second contact cleaning roller arranged for rolling contact with the second main surface of the frame and a roller at rest of the contact cleaning rollers disposed out of contact with the second major surface of the contact. the frame and in operative coupling with drive means to maintain the rotational speed of the roller at rest; the turret of the second contact cleaning roller is rotatable to sequentially place the cleaning rollers by contacting in and out of contact with the second main surface of the weft; the second contact cleaning roller is mounted adjacent to the idle roller in the second contact cleaning roller for movement in and out of coupling and longitudinally; the second cleaning roller has an adjacent porous cleaning material, the porous cleaning material has a non-alcoholic solvent applied to the cleaning material to be placed against the roller at rest to remove particles therefrom; and the turret of the first contact cleaning roller and the turret of the second contact cleaner are placed in the structure to guide the moving web in a substantially S-shaped path.

BRBVB DBSCRIPTION DB THE DRAWINGS Other characteristics of the present invention will be apparent as it proceeds in the following description and with reference to the drawings in which: Figure 1 is a schematic elevational end view of a manual contact cleaning roller system, which incorporates the present invention; Figure 2 is a schematic elevational end view of a cleaning roller system by contact with the hidden end structure removed; Figure 3 is a "schematic end elevation view" of a cleaning system embodiment of this invention, wherein a plurality of the contact cleaning rollers support, clean and guide a moving web in a substantially "Sn" path.; and Figure 4 is a schematic elevation of a roller system for automated contact cleaning incorporating the present invention. While the present invention will be described in connection with a preferred embodiment thereof, it will be understood that it is not intended to limit the invention to that embodiment. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.

DETAILED DESCRIPTION DB THE INVENTION Reference is now made to the drawings, wherein the illustrations are for the purpose of showing a preferred embodiment of the invention and not to limit the same. Some contact cleaning roller systems where the present invention may be incorporated are described in the co-pending US patent application. Serial No. 08 / 505,931, filed on July 24, 1995 with the title "System for Cleaning Elestrostatographis Imaging Webs" (System for Cleaning Electrostatic Image Formation Frames) and here it is fully incorporated. The contact cleaning rollers (CCRs) are idle rollers coated with polyurethane, naturally sticky that clean an AMAT weft. During production, the automated cleaning heads run the length of the rotating CCRs and remove the loose adhering particles when rubbing with a stretched cloth on a sponge moistened with a solution of 80% water / 20% ethanol. This removes primarily the dirt and particles that are attracted to the frame by static charge. During the pre-coating production phase, occasionally uncured bar code ink is transferred to the CCRs. Likewise, in the production coating phase, occasionally the solvent-based coatings are transferred to the CCRs. Both of these transfers can leave a residue (for example agglomerations) after the cleaning process, causing the surface of the CCR to lose its "stickiness". To restore "stickiness", CCRs are now cleaned manually. This requires many stages. The coating or pre-coating elements are turned off, a mechanic removes a safety panel, and then an operator climbs a ladder, accesses and cleans the CCR with a cleaning cloth soaked with solvent. With particular reference to Figure 1, the cleaning head of the roller cleaner 40 is coupled to a rail apparatus 150 for traversing the length of the contact cleaning rollers 21, 22, 23. A supply spindle 51 and a spindle of collection 52 support the cleaning cloth 55. A pair of guide bars 53 defines the path of the cleaning cloth 55 from the supply spindle 51 to the collection spindle 52. a sponge cushion 54 between the guide bars 53 abuts to the stop against the cleaning cloth 55. The sponge cushion 54 is mounted on a backing plate 56 which employs an air cylinder 57 to move the sponge cushion 55 in and out of contact with the CCRs. A system for supplying solvent 171 includes for example, a compressible bottle (e.g., or delivery device) 120 and a delivery line or tube 170 engages the back of the sponge cushion 54, by the supply tube 170, in such a way as to provide a uniform distribution of the solvent through the sponge cushion 54. The supply spindle 51 is initially filled, and the collection spindle 52 is initially empty of the cleaning cloth. The collection spindle is moved by a motor 48 to intermittently advance the cleaning cloth 55 from the supply spindle 51 to the harvest spindle 52. The harvest spindle 52 pulls the supply spindle fabric 51, over the guide bars 53. in the direction illustrated by arrows 2 and 3 on the spindles 51, 52. A fabric missing detector 140 is illustrated by a detection mechanism for signaling a condition without fabric and turning off e? CCRs cleaning system. The cleaning system described above with reference to Figure 2, as well as a system for supplying fluid to the cleaning roller 40 are described in US Pat. No. 5,251,348 the entire description is incorporated herein by reference. The new method of the present invention uses the existing cleaning head to clean and inject the sponge with the appropriate solvent required to dissolve the ink or coating that adheres to the CCRs. In the past, the cleaning fluid selected has been the use of inert liquids to the cleaning member, such as water and mixtures of alcohol and water. In the present invention, solvents that dissolve the agglomerations (for example contamination in the CCPs) are employed. Normally, a solvent such as this will not be used because of the potential that the contact cleaning roller would be attacked by the solvent. However, on the occasions when a significant amount of the coating materials cover the CCR after cleaning, the CCRs operate at reduced effectiveness. The agglomerations must be removed to rejuvenate the cleaning capacity of the CCRs. In the present invention non-alcoholic components of the formula (R C O R) n X wherein R is an alkyl and X is an alkylene halide, are the solvents used to clean * the CCRs. These components are located in the solvent supply system 171. When n is the number zero or the number 1, and is the number l or the number zero, respectively. That is, when n is zero and is zero and when n is 1 and is zero. Experimentation in the precoating and coating modules, using these types of components, efficiently cleans waste CCRs such as dry coating residue and bar code ink. The components found create an efficient cleaning solvent for the CCRs including aliphatic ketones and alkylene halides. The aliphatic ketones are alkyl ketones containing from about 1 to 25 carbon atoms (with a preferred range of about 1 to about 10 carbon atoms). The aliphatic ketones contain components such as methyl ethyl ketone (ie the preferred component), methyl ketone, ethyl ketone, propyl ketone and butyl ketone. The alkylene halides are alkylene chlorides containing about 1 to about 30 carbon atoms (with a preferred range of about 2 to about 12 carbon atoms). The alkylene chlorides include methylene chloride, ethylene chloride and propylene chloride, with methylene chloride which is the preferred component. As illustrated in Figure 1, a solvent line 170 is connected to the back and to the sponge plate 56 at one end. (The solvent line is not limited to this configuration.The solvent line can be connected to the sponge in any way that allows the application of the contents of the solvent line to the sponge or porous member or similar cushion). The other end of the solvent line is connected to a "compressible" bottle (for example supply device) 120, for manual operation, filled with one of the solvents described above; It is noted that the selection of the solvent depends on the solubility of the agglomerations in CCR. Another criterion for solvent selection is safety. (For example, the operator must take precautions to avoid flammability and exposure to vapors from particular solvents).

The cleaning subsystem is switched to a manual mode, while the coating applicator can remain operational and then a cleaning cycle is initialized. When the sponge contacts the rotating CRC, a solvent is applied through the solvent line and into the sponge, which is then transferred to the rotating CRC. The combination of solvent, cleaning cloth and sponge pressure efficiently removed unwanted accumulation. Security will be improved with the introduction of this new method. The CCR modules are completely circumscribed with protective panels to prevent an operator from coming into contact with any of its moving parts. The previous method of cleaning by hand requires interruption of the module, removal of a panel and access to clean the CCR. An automated version of this method would not require the removal of any panel, therefore operators would not be subject to unsafe conditions. Examples of two contact cleaning roller systems using the present invention are illustrated in Figures 2 and 3. Reference is now made to Figure 2, which shows a contact cleaning roller system in a screen processing apparatus. The screen processing apparatus is indicated by a weft 10 moving from left to right in a serpentine path over a series of rollers 11 in a structure 12. The weft 10 has two main exposure surfaces. A turret for contact cleaning roller 20 includes contact cleaning rollers 21, 22 and 23, is mounted on the structure 12 in the path of the weft 10. The cleaning rollers 21, 22 and 23 are steel rollers, coated with a polymer for a sticky surface. The sticky surfaces of the cleaning rollers, in rolling contact with a main surface of the moving web 10, remove dirt, contamination particles from the main surface of the weft 10 as it is wound onto the particles. The contact cleaning rollers in turn * are contaminated and must be cleaned periodically to restore their effectiveness. A cleaning roller 40 is placed adjacent to the contact cleaning roller turret 20 for movement in and out of engagement. With continuous reference to Figure 2, the contact wiper roller turret 20 includes a rotatable turret arrow 24 extending end-to-end of the structure 12, with a fixed end plate 25 at each end. Each end plate includes three radial arms 26, each supporting one end of a rotatable cleaning roller. The turret arrow 24 is connected through a convenient gear train with a motor 28 and an interlock brake (not shown). The turret arrow 24 is placed with two of its active cleaning rollers 21, 22, in rolling contact with a main surface of the moving frame 10, to clean the main surface. The third cleaning roller 23 is out of contact with the frame 10, at rest and 'out of service for its own cleaning. The motor 28 periodically rotates the screw 20 by the appropriate amount, of 120 ° in this example, to take a cleaning roller by contact out of service and to put another cleaning roller by contact in service. The cleaning head of the cleaning roller 40 includes a supply spindle 51 and a collection spindle 52 for the cleaning cloth 55 and a pair of guide bars 53 which define the path of the cleaning cloth 55 from the supply spindle 51 to the collection spindle 52. The sponge cushion 54 between the guide bars 53 abuts butt against the cleaning cloth 55. The sponge cushion 54 is mounted on a concave back plate 56 which engages an air cylinder that moves the sponge pad 54 and cleaning cloth 55 inside and outside contact with the CCRs. - .. The supply spindle 51 is initially full, and the spindle of collection 52 is initially empty of the cleaning cloth 55. The harvesting spindle 52 is driven by a motor 48 to advance the cleaning cloth intermittently from the supply spindle 51 to the collection spindle 52. The collection spindle 52 pulls the cloth 55 from the supply spindle 51 on the guide bars 53 in the direction of movement illustrated by arrows 2 and 3. The fabric failure detector is illustrated by reference numeral 140. A description of the cleaning system similar to that described above with reference to Figure 2, is illustrated in the U.S. Patent. No. 5,251,348 the entire description is incorporated herein by reference. With reference to Figure 3, a plurality of turrets for contact wiper rolls 70 and 72 are illustrated mounted on the structure 12 in the path of the electrosthographic image shaper substrate 66. ** The touch cleaner roller turret 70 includes the contact wiper rollers 74, 76 and 78 and the contact wiper roller turret 72 include the contact wiper rollers 80, 82 and 84. The components of the contact wiper roller turrets 70 and 72 are identical to the components of the touch cleaner roller turret 20 (see Figure 2) described above. In this way, the contact cleaning rollers 74, 76 and 78, 80, 82 and 84 are rigid rollers (for example metal or plastic) coated with a polymer for a "sticky" surface. The contact wiper roller turrets 70 and 72 are placed in the structure 12 such that the contact wiper rollers 74 and 76 contact a first main surface on one side of the electrostatic image forming weave substrate 66 and the wiper rollers by contact 80 and 82 contact a second main surface on the side of the electrostatic image forming screen substrate 66 opposite the first major surface. The contact wiper roller turrets 70 and 72 are also placed in the frame 12 to support and guide the moving electrostatic imager frame substrate 66 in a substantially "S" shaped path to clean both sides of the screen substrate. 66 in an extremely short and compact path with contact between the weft substrate 86 and contact cleaning rollers which are subetanially under the same pressure, for more uniform cleaning results. The lateral orientation of the rollers can be adjusted to change the buckling angle, thus providing optimum cleaning. The idle roller 86 feeds the electrostatic image forming web substrate 66 to the strip 70 and the idle rollers 88, 90 and 92 guide the web substrate 66 away from the turret 72 to the next processing station (not shown) . For convenience, the term "electrostatic image forming weave substrate" as used herein is intended to include an uncoated or coated substrate component of an electrostatic image forming member such as, for example, a film coated with a conductive layer, a film coated with a conductive layer and a load blocking layer and the like. In previous systems, the CCR cleaning head can be cycled in automatic or manual mode. In either mode, the contact cleaning system is displaced by software, and the test for the presence of moisture in the cleaning head sponge is by measuring the conductance of the liquid through the back surface of the sponge. The water-based solution is pumped from a pressure vessel to the sponge when the pre-adjusted conductivity level falls below its fixed point in systems prior to the present invention. This measure of conductivity is eliminated in the present invention. Reference is now made to Figure 4, which illustrates an automated mode 172 of the present invention. In the automated mode of the present invention, additional physical equipment and plumbing parallel to the existing system is required for periodic supply of the cleaning solvent to the sponge pad 54, in addition to and separate from the regular cleaning solution. Separate supply lines 170, 175 are illustrated from the sponge pad 54 for separating the solution / solvent containers 200, 205. The solution container 205 contains inert solution to the cleaning member such as ethanol / water solution, as shown in FIG. discussed earlier, for common cleaning of the CCRS. The solvent container 200 contains a solvent, as described above, for periodic cleaning of the CCRs, at synchronized intervals, to remove persistent agglomerations that adhere to the CCRs and are not removed by a standard cleaning solution. To avoid mixing the cleaning solution with the cleaning solvent, separate supply lines 170, 175 are used with check valves 180, 185 or a similar device that allows flow of the contents of the line only in one direction (see arrows 181, 186). A solenoid valve or similar systems 190, 195 forces the solvent or solution from their respective containers 200, 205 through the check valves 180, 185 and the supply line to the sponge. The system software is then modified to allow an automated supply of the solvent. Only one of the components (solution 205 or solvent 200) is pumped through its supply line at any given time. That is, when the common cleaning method is operational, the solvent cleaning method side is not operational. When the solvent cleaning method is operational, the cleaning side with the solution of the device is not operational. This prevents the mixing of the solvent with the solution. An example of uniform distribution is illustrated in this Figure by the flow of the solution or solvent from the respective container 200, 205 to a sponge cushion 54, which contains an orifice 59 through which the solution or solvent, as the case may be. , is applied through the sponge cushion 54. In summary, the present invention uses non-alcoholic components of the formula (RC 0 R) n Xy wherein R is an alkyl and X is an alkylene halide, are the components for cleaning the CCRs. These components are located in the compressible bottle, and applied to the sponge to recover the "sticky" consistency of the contact cleaning rollers. When n is the number zero or number 1, y is the number l or the number zero, respectively. That is, when n is zero and is zero and when n is l and is zero. Experimentation in the coating application modules ** and pre-coating application, using these types of components, the CCRs efficiently cleaned of debris such as dry coating residue and bar code ink. It is found that the components create an efficient cleaning component for the CCRs including aliphatic ketones and alkylene halides. The aliphatic ketones are alkyl ketones containing from about 1 to 25 carbon atoms ... (with a preferred range of about 1 to about 10 carbon atoms). The aliphatic ketones contain components such as methyl ethyl ketone (ie the preferred component), methyl ketone, ethyl ketone, propyl ketone and butyl ketone. The alkylene halides are alkylene chlorides containing about 1 to about 30 carbon atoms (with a preferred range of about 2 to about 12 carbon atoms). The alkylene chlorides include methylene chloride, ethylene chloride and propylene chloride, with the preferred component being methylene chloride. Therefore, it is apparent that there have been provided in accordance with the present invention, a method and apparatus for cleaning ink and coating of contact cleaning rollers, which fully satisfy the previously established objects and advantages. While this invention has been described in conjunction with a specific embodiment thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. Accordingly, it is intended to cover all these alternatives, modifications and variations that fall within the spirit and broad scope of the appended claims. It is noted that in relation to this date, the best method known to the applicant to carry out the said invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (35)

1. CLAIMS l.- Procedure for removing particles from a contact cleaning roller, characterized in that it comprises: removing particles from an image forming surface by contacting the image forming surface with a first contact cleaning roller located in a cleaning roller turret by contact; indexing the first cleaning roller by contact out of contact with the image forming surface and a second contact cleaning roller, in contact with the image forming surface, in synchronized intervals; placing the first cleaning roller * by contact adjacent to a porous material; apply a non-alcoholic solvent to the porous material; and contacting the first cleaning roller by contact with the porous material having the non-alcoholic solvent there, to remove particles as the second cleaning roller by contact removes particles from the second cleaning roller by contact.
2. 2. - A method according to claim 1, characterized in that it further comprises: indexing the second cleaning roller by contact out of contact with the image forming surface and return the first cleaning roller by contact, in contact with the forming surface of image, in synchronized intervals; placing the second cleaning roller by contact adjacent to the porous material; apply a non-alcoholic solvent to the porous material; and contacting the second cleaning roller by contact with the porous material having the non-alcoholic solvent, to remove particles from the second contact cleaning roller.
3. 3. A process according to claim 2, characterized in that the alcohol solvent is selected from the group consisting of aliphatic ketones and alkylene halides.
4. 4. - A method according to claim 3, characterized in that the aliphatic ketones comprise alkyl ketones.
5. 5. - A method according to claim 4, characterized in that the alkyl cets contain about i to about 25 carbon atoms.
6. 6. - A method according to claim 5, characterized in that the aliphatic ketones are chosen from a group of materials consisting of methyl ethyl ketone.
7. 7. A process according to claim 5, characterized in that the aliphatic cetans are chosen from a group of materials consisting of methyl ketone, ethyl ketone, propyl ketone and butyl ketone.
8. 8. - A process according to claim 7, characterized in that the alkylene halides comprise alkylene chlorides.
9. 9. A process according to claim 8, characterized in that the alkylene chloride contains from about 1 to 30 carbon atoms.
10. 10. A process according to claim 9, characterized in that the alkylene chloride is selected from a group of materials consisting of methylene chloride.
11. 11. A process according to claim 10, characterized in that the alkylene chloride is selected from a group of materials consisting of ethylene chloride and propylene chloride.
12. 12. - A method according to claim 3, characterized in that the non-alcoholic solvent is of the formula (RCOR) n X where R is an alkyl and X is an alkylene halide, when n is the number zero and is the number l and when n is number 1 and it is number zero.
13. 13. A method for cleaning a web having a main surface on one side of the web, and another main surface on the opposite side of the web, the method is characterized in that it comprises: transporting the web through a path in the form substantially "Sn", including a clockwise curved path attached at one end to one end of the curved path in the counterclockwise direction; and maintaining at least one contact cleaning roller in contact with one of the main surfaces on the inside of the curved path in the clockwise direction, maintaining at least one other contact cleaning roller, in rolling contact with the other of the main surfaces on the inside of the curved path clockwise to clean both major surfaces of the weft and maintain a second contact cleaning roller in rolling contact with a porous material having a non-alcoholic solvent there, to clean particles removed from the surface of the weft, from the other second contact cleaning roller, the other second contact cleaning roller is out of contact with the main surfaces of the weft. • - ..
14. 14.- A method according to claim 13, characterized in that the non-alcoholic solvent is selected from the group consisting of aliphatic ketones and alkylene halides.
15. 15. A process according to claim 14, characterized in that the aliphatic ketones are alkyl ketones.
16. 16. - A method according to claim 15, characterized in that the alkyl ketones contain from about 1 to about 25 carbon atoms.
17. 17. A process according to claim 14, characterized in that the aliphatic ketones are chosen from a group of materials consisting of methyl ethyl ketone.
18. 18. A process according to claim 17, characterized in that the aliphatic ketones are chosen from a group of materials consisting of methyl ketone, ethyl cetane, propyl ketone and butyl ketone.
19. 19. A process according to claim 18, characterized in that the halides of alkylene © comprise alkylene chlorides.
20. 20. A process according to claim 19, characterized in that the alkylene chloride contains from about 1 to 30 carbon atoms.
21. 21. A method according to claim 20, characterized in that the alkylene chloride is selected from a group of materials consisting of methylene chloride.
22. 22. - A method according to claim 20, characterized in that the alkylene chloride are chosen from a group of materials consisting of ethylene chloride and propylene chloride.
23. 23. A process according to claim 14, characterized in that the non-alcoholic solvent is of the formula (RCOR) n Xy wherein R is an alkyl and X is an alkylene halide, when n is the number zero e, and is the number l, when n is the number 1, and is the number zero.
24. 24. - A method according to claim 13, characterized in that the frame comprises an image forming surface.
25. 25. A cleaning system with contact cleaning roller, characterized in that it comprises: a frame for supporting the system with respect to a moving frame having a first main surface and a second main surface opposite each other; a first contact cleaning roller, rotatable, supported in the frame arranged for rolling contact with the first main surface of the frame; a second rotatable contact cleaning roller, supported on the structure arranged for rolling contact with the second main surface of the frame, the second rotatable contact cleaning roller, has an axis parallel to the axis of the first cleaning roller by rotatable contact; the first rotatable contact cleaning roller, and the second rotatable contact cleaning roller are placed in the structure to support and guide the moving web in a substantially "S" shaped path; and a device for applying a non-alcoholic solvent to a porous material, the first rotatable contact cleaning roller and the second rotatable contact cleaning roller are placed in the frame to be indexed individually in a position adjacent to the porous material, the porous material contacts one of the first rotatable contact cleaning roller and the second rotatable contact cleaning roller, for removing particles while the other * of the first rotatable contact cleaning roller and the second rotatable contact cleaning roller are in contact with one of the first main surface and the second main surface.
26. 26.- Cleaning system as described in claim 25, characterized in that the frame comprises an image forming surface. ...
27. 27. Cleaning system as described in claim 25, characterized in that the device includes a supply bottle and a compression bottle.
28. 28. Cleaning system as described in claim 25, characterized in that the non-alcoholic solvent is selected from the group consisting of aliphatic ketones and alkylene halides.
29. 29. - Cleaning system as described in claim 28, characterized in that the non-alcoholic solvent is of the formula (R C 0 R) n X wherein R is an alkyl and X is an alkylene halide, when n is the number zero and y is the number 1 when n is the number l and it is the number zero.
30. 30. Cleaning system as described in claim 25, characterized in that the first rotatable contact cleaning roller comprises an electrically conductive cylindrical core coated with a sticky contact cleaning material.
31. 31.- A cleaning system with contact cleaning roller, characterized in that it comprises: a frame for supporting the system with respect to a moving frame having a first main surface and a second main surface? a turret of first contact roller cleaner in the frame; and a first cleaning roller in the frame; the pattern of the first contact cleaning roller includes a plurality of rotatable contact cleaning rollers supported on the turret of the first contact cleaning roller; an active of the contact cleaning rollers arranged for rolling contact with the first main surface of the frame and a roller at rest of the contact cleaning rollers, arranged out of contact with the first main surface of the frame and in operative coupling with means of impulse to maintain the rotational speed of the roller at rest; the turret of the first contact cleaning roller is rotatable to sequentially place the cleaning rollers by contact in and out of contact with the first main surface of the weft; the first cleaning roller is mounted adjacent the roller at rest in the first contact cleaning roller, for movement in and out of coupling and longitudinally; the first cleaning roller includes an absorbent cleaning material to be placed against the roller at rest; a turret of second contact cleaning roller in the structure adjacent to the turret of the first contact cleaning roller; and a second cleaning roller in the structure; the turret of the second contact cleaning roller includes a plurality of rotatable contact cleaning rollers supported on the turret of the second contact cleaning roller; an active roller of the contact cleaning rollers in the turret of the second contact cleaning roller. arranged for rolling contact with the second main surface of the web and a roller at rest of the contact cleaning rollers disposed out of contact with the second main surface of the web and operatively coupled with drive means to maintain the rotational speed of the roller Resting; the turret of the second contact cleaning roller is rotatable to sequentially place the cleaning rollers by contacting in and out of contact with the second main surface of the weft; and the second contact cleaning roller is mounted adjacent to the idle roller in the second contact cleaning roller for movement in and out of coupling and longitudinally; the second cleaning roller has an adjacent porous cleaning material, the porous cleaning material has a non-alcoholic solvent applied to the cleaning material to be placed against the roller at rest to remove particles therefrom.
32. 32. A cleaning system in accordance with claim 31, characterized in that the turret of the first contact cleaning roller and the turret of the second contact cleaner are placed in the frame to direct the moving web in a substantially substantial path. of "S".
33. 33. Cleaning system as described in claim 32, characterized in that the frame comprises an image forming surface.
34. 34. A cleaning system according to claim 31, characterized in that the non-alcoholic solvent is selected from the group consisting of aliphatic ketones and alkylene halides.
35. 35. - Cleaning system as described in claim 34, characterized in that the non-alcoholic solvent is of the formula (RCOR) n Xy, where R is an alkyl and X is an alkylene halide, when n is the number zero and y is the number 1 and when n is the number l and it is the number zero. SUMMARY DB THE INVENTION The present invention relates to a method and cleaning system for cleaning ink and coating of contact cleaning rollers. The contact cleaning rollers are located in a turret and as one contact • the cleaning roller is indexed sequentially out of contact with the image forming surface and in contact with a porous material another contact cleaning roller is indexed in contact with the surface image shaper simultaneously. The porous material has a non-alcoholic solvent applied to clean the roller surface * cleaner by contact during contact. The components found create an efficient cleaning solvent for the CCRs including aliphatic ketones and alkylene halides. The aliphatic ketones are alkyl ketones containing from about 1 to about 25 carbon atoms (with a preferred range of about 1 to about 10 carbon atoms). The aliphatic ketones contain solvents such as methyl ethyl ketone (ie the preferred solvent) methyl ketone, ethyl ketone, propyl ketone and butyl ketone. The alkylene halides are alkylene chlorides containing about 1 to about 30 carbon atoms (with a preferred range of about 2 to about 12 carbon atoms). The alkylene chlorides include methylene chloride, ethylene chloride and propylene chloride, the preferred solvent is methylene chloride.