PRINTING APPARATUS

• US 20100028066A1
• Filed: 03/14/2009
• Published: 02/04/2010
• Est. Priority Date: 03/15/2007
• Status: Abandoned Application

• Current Assignee: M & A Thomson Litho Limited
• Original Assignee: M & A Thomson Litho Limited
• Inventors: Thomson, Matthew Hamilton
• Application Number:
  US12/514,859
• Publication Number:
  US 20100028066A1
• Time in Patent Office: Days
• US Class Current: 400/621
• CPC Class Codes: B26D 5/08 Means for actuating the cutting member to effect the cut
• CPC Class Codes: B26D 5/086 Electric, magnetic, piezoelectric, electro-magnetic means
• CPC Class Codes: B41F 13/0045 Electric driving devices
• CPC Class Codes: B41F 13/44 Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
• CPC Class Codes: B41F 13/54 Auxiliary folding, cutting, collecting or depositing of sheets or webs
• CPC Class Codes: B41F 13/56 Folding or cutting
• CPC Class Codes: B41F 33/16 Programming systems for automatic control of sequence of operations
• CPC Class Codes: B41F 7/12 using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
• CPC Class Codes: B41P 2213/734 each printing unit being driven by its own electric motor, i.e. electric shaft
• CPC Class Codes: B65H 2555/24 Servomotors
• CPC Class Codes: B65H 45/18 Oscillating or reciprocating blade folders carried on rotary members B65H45/16
• CPC Class Codes: B65H 45/28 Folding in combination with cutting cutting machines B26D

Abstract

Printing apparatus (S′) comprising printing means (3) having printing means motor (M′₁, M′₂) cutting means (7′) having a cutting means motor (M′₁, M′₂), a means for controlling the printing means motor and the cutting means motor (M′), wherein the control means comprises electronic software and/or firmware, and does not include hardware common to the motors, such as a common shaft drive as in the prior art. The apparatus (S′) also comprises a folding means (7′) having a folding means motor (M′) also controlled by the control means. This arrangement provides a particularly advantageous effect, whereby the motors (M′) are independently driven, but commonly controlled.

Claims

1. A printing apparatus, particularly a web-fed or reel-fed printing apparatus, comprising:

a printing means having at least one printing means motor;

a cutting means having at least one cutting means motor; and

means for controlling the at least one printing means motor and the at least one cutting means motor, wherein

the at least one printing means motor is provided on a carriage comprising a printing medium containing unit, the carriage being movable on a printing tower having a plurality of selectable cartridges, the at least one print means motor being provided on the carriage.

2. A printing apparatus as claimed in claim 1, wherein the apparatus comprises a folding means having at least one folding means motor.

3. A printing apparatus as claimed in claim 2, wherein the control means controls the at least one folding means motor.

4. A printing apparatus as claimed in claim 1, wherein the control means comprises electronic means.

5. A printing apparatus as claimed in claim 1, wherein the motors are independently driven, but commonly controlled.

6. A printing apparatus as claimed in claim 1, wherein the apparatus comprises an offset lithographic perfecting printing press.

22. A printing apparatus as claimed in claim 1, comprising a knife folder, wherein the knife folder comprises a drive means and a knife blade, wherein the drive means comprises a lobed or eccentric cam or drive member.

23. A printing apparatus as claimed in claim 22, wherein the drive means comprises a drive device and a drive mechanism connecting the drive device to the knife blade, the lobed cam or drive member comprising at least part of the drive mechanism.

24. A printing apparatus as claimed in claim 22, wherein the lobed or eccentric cam or drive member comprises a first portion and a second portion, the second portion having a width less than a width of the first portion.

25. A printing apparatus as claimed in claim 23, wherein the first portion is connected to the drive device and the second portion is connected to the knife blade by a rigid member which comprises one or more recesses or apertures.

26. A printing apparatus as claimed in claim 22, wherein the knife folder also comprises a plunger, which is connected to a/the rigid member.

27. A printing apparatus as claimed in claim 26, wherein the drive mechanism connects the drive device to the plunger, the plunger being caused, in use, to move or reciprocate in a linear movement.

28. A printing apparatus as claimed in claim 22, wherein the lobed or eccentric cam or drive member is solid.

34. A printing apparatus as claimed in claim 1, wherein the apparatus comprises a web-fed perfecting printing apparatus comprising:

an array of cartridges for printing on a web fed through the array, each cartridge comprising a pair of adjacent printing cylinders, and each cylinder of a cartridge being adapted to apply printing medium to a respective surface of a web passing therebetween;

optionally

means for supplying a printing medium to both printing cylinders of a selected cartridge said printing medium supplying means being contained in one or more discrete units; and

optionally

means for effecting mutual repositioning of the cartridges with respect to the or each printing medium supply unit to effect the selection of said selected cartridge wherein the web is fed through each cartridge of the array.

52. A printing apparatus as claimed in claim 4, wherein the electronic means is selected from one or more of:

control software, firmware, and electronic circuitry.

53. A printing apparatus as claimed in claim 6, wherein the motors are selected from one of:

electronic motors, AC electric motors and AC servomotors.

7. A web-fed or reel fed printing apparatus comprising means for controlling independently driven motors of at least one print cartridge and a cutter of the printing apparatus, wherein the independently driven motors comprise at least one printing means motor and at least one cutting means motor, wherein

the at least one printing means motor is provided on a carriage comprising a printing medium containing unit, the carriage being movable on a printing tower having a plurality of selectable cartridges, the at least one print means motor being provided on the carriage.

8. A printing apparatus as claimed in claim 7, wherein the control means is selected from one or more of:

control electronic means, software means, and firmware means.

9. A printing apparatus as claimed in claim 7, wherein the apparatus comprises an independently driven print cartridge motor, and an independently driven cutter motor.

10. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a folder, such as a knife folder.

11. A printing apparatus as claimed in claim 10, wherein the apparatus comprises an independently driven folder motor.

12. A printing apparatus as claimed in claim 10, wherein the means for controlling the independently driven motors also controls the folder motor.

15. A printing apparatus as claimed in claim 7, wherein the web-fed or reel-fed printing apparatus is a perfecting printing apparatus, each motor comprising an electric motor, such as an AC electric motor or AC servomotor.

16. A printing apparatus as claimed in claim 7, wherein the respective drive means are synchronised electronically such as by electronic, software and/or firmware means.

17. A printing apparatus as claimed in claim 7, wherein the print means comprises a printing tower.

18. A printing apparatus as claimed in claim 7, wherein the printing or print means also comprises cut-off cylinders.

19. A printing apparatus as claimed in claim 7, wherein the apparatus comprises chill rolls and transport drive(s), which are independently driven by respective independent drive means.

20. A printing apparatus as claimed in claim 7, wherein each of the independent drive means or motors is selected from one of:

an electric motor, such as an AC electric motor and a servomotor.

21. A printing apparatus as claimed in claim 7, wherein the printing means or print tower comprises at least one or a plurality of selectable cartridges.

29. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a web-fed printing apparatus comprising:

a plurality of printing cartridges arranged in a fixed array for printing a web feedable through each cartridge of the array;

optionally

at least one unit for containing printing medium mounted adjacent the array; and

optionally

means for moving the at least one unit from a position in which it interacts with one of the cartridges to a position in which it interacts with another of the cartridges, preferably altering a variable cutoff as it does so;

optionally

whereby, in use, a web fed through the array is printable by a selected cartridge, that selected cartridge interacting with the at least one unit and its transfer means transferring the printing medium from the at least one web, and optionally the selected cartridge is changeable by operation of the drive means to move the at least one unit from the selected cartridge to another cartridge, and further optionally

printing cylinder(s) of one cartridge are of different diameters to printing cylinder(s) of another cartridge.

30. A printing apparatus as claimed in claim 29, wherein the apparatus or cartridge forms a web-fed offset printing press, in which each cartridge has a pair of blanket cylinders, and a corresponding pair of plate cylinders.

31. A printing apparatus as claimed in claim 30, wherein the apparatus comprises an inking and dampening unit displaceable relative to the cartridges to supply selectively the plate cylinders of at least one of those cartridges.

32. A printing apparatus as claimed in claim 31, wherein, in use, the apparatus provides a printing sequence, wherein:

the inking and dampening unit is placed in an operative position for a first cartridge and a print run is carried out for that cartridge;

then the blanket cylinders of the first cartridge are moved away from the web;

the blanket cylinders of a second cartridge are moved into contact with the web when the inking and dampening unit has moved to that cartridge.

33. A printing apparatus as claimed in claim 29, wherein the apparatus includes a plurality of inking and dampening units for supplying respective different colours simultaneously to a plurality of selected cartridges.

35. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a web-fed printing apparatus comprising a plurality of cartridges in an array for printing a web feedable through the array, each cartridge having means for transferring printing medium for a unit for containing such printing medium to the web, the means including at least one printing cylinder which is adapted to contact the web;

wherein the at least one printing cylinder of one of the cartridges has a different circumference from that of the at least one printing cylinder of at least one other of the cartridges, such that, in use, the different sized cylinders provide printing of respectively different print repeat lengths, and the web is printed by at least some of the cartridges with the different sized cylinders being simultaneously present in the apparatus during that printing;

wherein the cartridges are arranged so that the web is feedable through each cartridge of the array.

36. A printing apparatus as claimed in claim 7, wherein, in use, the apparatus is capable of providing the printing to change from one repeat length to another without having to break the web.

37. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a web processing system comprising an apparatus for printing continuously at least one web of material;

means for transferring the printed web continuously to a means for cutting the web into a plurality of separate sheets, which cutting means has an action having a timed relationship with the printing apparatus; and

means for transferring the sheets continuously to a means for folding the sheets, wherein the folding means has an action which is timed in dependence on the arrival of a sheet at the folding means and independently of the action of printing on the at least one web.

38. A printing apparatus as claimed in claim 37, wherein the web processing system has means between the printing apparatus and the cutting means for forming a longitudinal fold in the or each web.

39. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a web processing system comprising an apparatus for printing at least one web of material;

means for forming a longitudinal fold in the or each web;

means for cutting the web into a plurality of separate sheets; and

means for folding the sheets;

wherein the folding means has an action which is timed in dependence on the arrival of a sheet at the folding means and independently of the action of printing on the at least one web.

40. A printing apparatus as claimed in claim 38, wherein the web processing system has means for forming a longitudinal perforation in the or each web prior to the formation of the longitudinal fold.

41. A printing apparatus as claimed in claim 7, wherein the web processing apparatus has means for forming a transverse perforation in the web prior to cutting of the web into sheets.

42. A printing apparatus as claimed in claim 7, wherein the apparatus comprises a processing system comprising:

an apparatus for printing at least one web of material;

means for forming a transverse perforation in the or each web;

means for cutting the web into a plurality of separate sheets; and

means and independently of the action of printing on the at least one web.

43. A printing apparatus as claimed in claim 42, wherein the means for folding the sheets includes a buckle folder.

44. A printing apparatus as claimed in claim 42, wherein between the cutting means and the means for folding the sheets, means are provided for directing alternate sheets to a corresponding one of two folders of the folding means.

45. A printing apparatus as claimed in claim 44, wherein there is provided web printing and sheet folding with a folder whose action is, in use, defined in dependence on arrival of a sheet.

46. A printing apparatus as claimed in claim 42, wherein there is provided continuous movement of the web from printer to folder, which forms a longitudinal fold and forms perforations in the web.

47. A printing apparatus as claimed in claim 7, wherein the apparatus, in use, produces at least 15,000 or at least 20,000 impressions per hour.

48. A method of processing at least one web comprising the steps of:

providing a web-fed printing apparatus according to claim 7; and

processing the at least one web by using said apparatus.

49. The method of claim 48, wherein the method comprises a method of processing at least one web of material comprising printing on the at least one web;

cutting, in a timed relationship with the printing, the or each printed web into a plurality of separate sheets; and

folding each sheet by a folding means;

there being continuous movement of the material from prior to the printing to the commencement of the folding of the sheets;

wherein the folding means has an action which is timed in dependence on the arrival of a sheet at the folding means and independently of the action of printing on the at least one web.

50. The method of claim 48, wherein the method comprises a method of processing at least one web of material, comprising printing on the at least one web;

forming a longitudinal fold in the or each printed web;

cutting, in a time relationship with the printing the or each web into a plurality of separate sheets; and

folding each sheet by a folding means, wherein the folding means has an action which is timed in dependence on the arrival of a sheet at the folding means and dependently of the action of printing on the at least one web.

51. The method of claim 48, wherein the method comprises a method of processing at least one web of material, comprising printing the at least one web;

forming transverse perforations in the printed web;

cutting in a timed relationship with the printing, of the or each web into a plurality of separate sheets; and

folding each sheet by a folding means, wherein the folding means has an action which is timed in dependence on the arrival of a sheet at the folding means and independently of the action of printing on the at least one web.

54. A printing apparatus as claimed in claim 9, wherein the print cartridge motor is an AC motor and the cutter motor is an AC motor.

55. A printing apparatus as claimed in claim 11, wherein the folder motor is an AC motor.

13. A web-fed or reel-fed printing apparatus comprising a print means and a cutting means, wherein the print means and the cutting means are directly driven by respective independent drive means, wherein the independently driven means comprise at least one printing means motor and at least one cutting means motor, wherein

the at least one printing means motor is provided on a carriage comprising a printing medium containing unit, the carriage being movable on a printing tower having a plurality of selectable cartridges, the at least one print means motor being provided on the carriage.

14. A web-fed or reel-fed printing apparatus comprising means for independently driving motors of one or more than one of:

a printing means;

a cutting means; and

/or

a folder means, wherein

the at least one printing means motor is provided on a carriage comprising a printing medium containing unit, the carriage being movable on a printing tower having a plurality of selectable cartridges, the at least one print means motor being provided on the carriage.