Apparatus and method for balancing a printing roller having an image producing area on its outer surface
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B41F-033/00
B41F-001/34
B41F-001/00
B41N-006/00
B41C-003/08
B41C-003/00
B41L-005/16
B41L-005/00
B41L-015/14
B41L-015/00
B41L-049/00
G01M-001/00
출원번호
US-0260978
(2005-10-28)
등록번호
US-7500432
(2009-03-10)
발명자
/ 주소
Van Denend,Mark E.
Shemesh,Ronnie
출원인 / 주소
Van Denend,Mark E.
Shemesh,Ronnie
대리인 / 주소
Goldberg,Richard M.
인용정보
피인용 횟수 :
1인용 특허 :
12
초록▼
Apparatus for balancing a printing roller having an image producing area thereon, includes a detector for detecting any unbalance of the printing roller during rotation thereof. A computer determines weight adjustments of the printing roller that are required to correct the unbalance, in response to
Apparatus for balancing a printing roller having an image producing area thereon, includes a detector for detecting any unbalance of the printing roller during rotation thereof. A computer determines weight adjustments of the printing roller that are required to correct the unbalance, in response to the detection. A laser is controlled by the computer to remove material, in response to the determination, from at least one engraveable plate mounted on the outer surface of the printing roller or from the printing roller itself, in an area outside of the image producing area, in order to balance the printing roller.
대표청구항▼
What is claimed is: 1. Apparatus for balancing a printing roller, said apparatus comprising: at least one engraveable plate adapted to be mounted on said printing roller in an area outside of a printing region; a detector for detecting any unbalance of said printing roller during rotation thereof,
What is claimed is: 1. Apparatus for balancing a printing roller, said apparatus comprising: at least one engraveable plate adapted to be mounted on said printing roller in an area outside of a printing region; a detector for detecting any unbalance of said printing roller during rotation thereof, and for producing an unbalance signal corresponding thereto; a control device for determining weight adjustments of said printing roller to correct said unbalance, in response to said unbalance signal, and for producing a correction signal in response thereto; and a laser for removing material, in response to said correction signal, from said at least one engraveable plate on said printing roller, in order to balance the printing roller. 2. Apparatus according to claim 1, wherein said printing roller includes an axial shaft, and said detector includes a dynamometer connected with said shaft. 3. Apparatus according to claim 1, wherein said detector includes a source of rays from the electromagnetic spectrum projected onto said outer surface, and a sensor that detects said rays that are reflected off of said outer surface. 4. Apparatus according to claim 3, wherein said source of rays includes a laser. 5. Apparatus according to claim 3, further comprising a first driving device which rotates said printing roller to expose different portions of said outer surface to said detector and said laser. 6. Apparatus according to claim 5, further comprising a second driving device which provides relative movement in a lengthwise direction between said printing roller and at least one of said laser and said detector. 7. Apparatus for balancing a printing roller, said apparatus comprising: a detector for detecting: variations in total indicated run-out of a surface of the printing roller, and any unbalance of said printing roller in relation to detection of variations in the total indicated run-out of the surface of the printing roller during rotation thereof, and for producing an unbalance signal corresponding thereto, said detector including a source of rays from the electromagnetic spectrum projected onto said outer surface, and a sensor that detects said rays that are reflected off of said outer surface; a control device for determining weight adjustments of said printing roller to correct said unbalance and to ensure cylindricity of the printing roller, in response to said unbalance signal, and for producing a correction signal in response thereto; and a device for removing material, in response to said correction signal, from said printing roller, in order to balance the printing roller and to ensure cylindricity of the printing roller. 8. Apparatus according to claim 7, wherein said detector detects variations in total indicated run-out of the surface of the printing roller at a speed slower than a normal printing speed of said printing roller prior to said detector detecting any unbalance of said printing roller. 9. Apparatus according to claim 7, wherein said detector includes a first detector which detects any unbalance of said printing roller and a second total indicated run-out detector. 10. Apparatus for balancing a printing roller having an engraved image on one of the printing roller and a printing elate mounted on the printing roller, said apparatus comprising: a control device which: calculates any imbalance of the printing roller in response at least to the engraved image, without reference to any detection of imbalance of the printing roller by a sensor, from at least one of: a weight and position of at least one element mounted on the printing roller, and an amount and position of any material removed from the printing roller or the at least one element, and determines an area on at least one of the following from which material is to be removed in order to balance the printing roller, in response only to the calculation: said printing roller, and at least one engraveable plate mounted on said printing roller outside of an image producing area of said printing roller; and a device for removing material, in response only to said determination by said control device, from at least one of the following in order to balance the printing roller: said determined area of said printing roller, and the least one engraveable plate mounted on said printing roller outside of said image producing area. 11. Apparatus according to claim 10, wherein said device for removing material includes a laser which ablates at least one of the following to remove material therefrom in order to balance the printing roller: said determined area of said printing roller, and the least one engraveable plate mounted on said printing roller outside of said image producing area. 12. A method for balancing a printing roller, said method comprising the steps of: mounting at least one engraveable plate on said printing roller in an area outside of a printing region; detecting any unbalance of said printing roller during rotation thereof, and producing an unbalance signal corresponding thereto; determining weight adjustments of said printing roller to correct said unbalance, in response to said unbalance signal, and producing a correction signal in response thereto; and removing material, in response to said correction signal, from said at least one engraveable plate on said printing roller by laser ablation, in order to balance the printing roller. 13. A method according to claim 12, wherein said step of detecting includes the step of using a dynamometer connected with an axial shaft of said printing roller to detect any unbalance of the printing roller. 14. A method according to claim 12, wherein said step of detecting includes the step of projecting a source of rays from the electromagnetic spectrum onto said outer surface, and detecting said rays that are reflected off of said outer surface. 15. A method according to claim 14, wherein said step of projecting includes the step of projecting a laser light onto said outer surface. 16. A method according to claim 14, further comprising the step of rotating said printing roller to expose different portions of said outer surface to said detector and said laser. 17. A method according to claim 16, further comprising the step of providing relative movement in a lengthwise direction between said printing roller and at least one of said laser and said detector. 18. A method for balancing a printing roller, said method comprising the steps of: detecting variations in total indicated run-out of a surface of the printing roller, detecting any unbalance of said printing roller in relation to detection of variations in the total indicated run-out of the surface of the printing roller during rotation thereof, and producing an unbalance signal corresponding thereto, said step of detecting any unbalance includes the step of projecting a source of rays from the electromagnetic spectrum onto said outer surface, and detecting said rays that are reflected off of said outer surface; determining weight adjustments of said printing roller to correct said unbalance and to ensure cylindricity of the printing roller, in response to said unbalance signal, and producing a correction signal in response thereto; and removing material, in response to said correction signal, in order to balance the printing roller and to ensure cylindricity of the printing roller. 19. A method according to claim 18, wherein said step of detecting variations in total indicated run-out occurs at a speed slower than a normal printing speed of said printing roller prior to said step of detecting any unbalance of said printing roller. 20. A method for balancing a printing roller having an engraved image on one of the printing roller and a printing plate mounted on the printing roller, said method comprising the steps of: calculating any imbalance of the printing roller in response at least to the engraved image, without reference to any detection of imbalance of the printing roller by a sensor, from at least one of: a weight and position of at least one element mounted on the printing roller, and an amount and position of any material removed from the printing roller or the at least one element; determining an area on at least one of the following from which material is to be removed in order to balance the printing roller, only in response to the calculation: said printing roller, and at least one engraveable plate mounted on said printing roller outside of an image producing area of said printing roller; and removing material, only in response to said determination by said control device, from at least one of the following in order to balance the printing roller: said determined area of said printing roller, and the least one engraveable plate mounted on said printing roller outside of said image producing area. 21. A method according to claim 20, wherein said step of removing material includes the step of ablating at least one of the following with a laser to remove material therefrom in order to balance the printing roller: said determined area of said printing roller, and the least one engraveable plate mounted on said printing roller outside of said image producing area.
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이 특허에 인용된 특허 (12)
Breese, Douglas E., Apparatus and method for balancing a vehicular driveshaft.
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Martin Michael R. (Schenectady NY) Smith David A. (Latham NY) Wetterau William H. (Albany NY), Microprocessor laser control system for multiplane balancing of rotors.
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