Position indication on photographic base

• US 6,814,514 B2
• Filed: 08/03/2001
• Issued: 11/09/2004
• Est. Priority Date: 08/07/2000
• Status: Expired due to Fees

• Current Assignee: Fujifilm Manufacturing Europe BV (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Korngold, Bruno Alexander, Verhoeven, Josephus Nicolaas Petrus, Sandifort, Robert Hendrik Johan, van Hooff, Antonius Jozef
• Primary Examiner(s): Nolan, Jr., Charles H.
• Application Number:
  US09/922,414
• Publication Number:
  US 20020030704A1
• Time in Patent Office: 1,194 Days
• Field of Search: 400/621, 400/74, 101/484
• US Class Current: 400/621
• CPC Class Codes: B65H 2220/01 indicating an entity as a function of which control, adjustment or change is performed, i.e. input
• CPC Class Codes: B65H 2220/03 indicating an entity which is measured, estimated, evaluated, calculated or determined but which does not constitute an entity which is adjusted or changed by the control process per se
• CPC Class Codes: B65H 2301/46018 involving location or further processing of splice
• CPC Class Codes: B65H 2301/5111 Printing; Marking
• CPC Class Codes: B65H 2511/23 Coordinates, e.g. three dimensional coordinates
• CPC Class Codes: B65H 2511/512 Marks, e.g. invisible to the human eye; Patterns
• CPC Class Codes: B65H 26/02 responsive to presence of irregularities in running webs
• CPC Class Codes: B65H 2701/1719 Photosensitive, e.g. exposure, photographic or phosphor
• CPC Class Codes: G03C 11/02 Marking or applying text

Abstract

A method of measuring a down-web coordinate is provided. A time-interval, elapsed since a detection of a position-indicating mark applied on a web, is related to a measured velocity. Upon detection of a position-indicating mark, the measured down-web coordinate is synchronised with the indicated down-web coordinate of said mark. The down-web coordinate can be measured in an ascending or a descending mode, depending on a detected roll-orientation information originated from said mark on said web. A selected lane pattern used for registration of the cross web position can be reversed automatically, depending on said roll-orientation information, originated from said mark on said web. A measured down-web starting position of a quality problem area on the web is marked by an ISO-hole.

Claims

1. A method of identifying the location of a down-web quality problem on a web comprising:

applying to a web a position-indicating mark having an indicated down-web coordinate;

detecting a quality problem;

determining a measured down-web coordinate of said quality problem by relating a time-interval elapsed since the detection of the position-indicating mark and a measured velocity of the web; and

synchronizing the measured down-web coordinate of said quality problem with the indicated down-web coordinate of the position-indicating mark.

2. Method according to claim 1, wherein, the down-web coordinate is measured in an ascending or a descending mode, depending on a detected roll-orientation information originated from said mark on said web.

3. Method according to claim 2, wherein a selected lane pattern used for registration of the cross web position is reversed automatically, depending on said roll-orientation information, originated from said mark on said web.

4. Method according to claim 1, wherein a measured down-web starting position of a quality problem area is marked on the web by an ISO-hole.

25. The method of claim 1, wherein a production inspection system is used to detect the quality problem.

26. The method of claim 1, wherein a series of position-indicating marks are applied to the web.

27. The method of claim 26, wherein the position-indicating marks are applied at regular intervals.

28. The method of claim 27, wherein the position-indicating marks are applied at intervals of between 10 cm and 20 cm.

29. The method of claim 1, wherein the measured down-web coordinate of said quality problem is synchronized with the indicated down-web coordinate by substituting the indicated down-web coordinate for the measured down-web coordinate.

30. The method of claim 1, wherein the measured down-web coordinate is synchronized with the indicated down-web coordinate by correcting the measured down-web coordinate with an offset value.

31. The method of claim 1, further comprising determining the down-web coordinate of the position-indicating mark by reading down-web coordinate information contained in the position-indicating mark.

32. The method of claim 1, further comprising determining the down-web coordinate of the position-indicating mark by counting a total of detected position-indicating marks and multiplying by a known interval between position-indicating marks.

5. Method for indicating a quality problem area on a web, characterized in that a down-web starting position of the quality problem area is marked on the web by an ISO-hole.

6. System for tracking quality problem areas at continuous-web products, comprising:

one or more detection systems for detecting down-web coordinates on a web from a plurality of position-indicating marks applied on said web;

one or more product-inspection-systems provided with length-measuring circuitry synchronised with said detected down-web coordinates;

a system for data-processing of quality problem areas at least storing the measured down-web coordinates of the respective quality problem areas;

a punch control system for ISO-hole punching provided with length-measuring circuitry synchronised with said detected down-web coordinates.

7. System according to claim 6, wherein the detection systems are suited for detecting a position-indication provided by digitised information contained in said mark.

8. System according to claim 7, wherein the detection systems are suited for detecting information about the roll-orientation provided by digitized information contained in said mark.

9. System for tracking the position of quality problem areas according to claim 6, wherein said inspection-system makes use of a web length-counter that is synchronized by loading the web length-counter with the relative down web coordinate information, originated from said mark on said web.

10. System according to claim 9, wherein said inspection-system'"'"'s web length-counter is automatically set into an ascending or descending counting mode, depending on said roll-orientation information, originated from said mark on said web.

11. System according to claim 9, wherein said inspection-system'"'"'s web length counter switches automatically from individual counting-mode into synchronized counting-mode after being triggered via acknowledgement of said mark on said web.

12. System for tracking the position of quality problem areas according to claim 6, wherein said punch control system for ISO-hole punching makes use of a web-length counter that is synchronized by loading the web length-counter with the relative down web position information, originated from said mark on said web.

13. System according to claim 12, wherein said punch control system'"'"'s web length-counter is automatically set into an ascending or descending counting mode, depending on said roll-orientation information, originated from said mark on said web.

14. System according to claim 12, wherein said punch control system'"'"'s web length-counter switches automatically from individual counting-mode into synchronized counting-mode after being triggered via acknowledgement of said mark on said web.

15. Photographic paper for application in a system according to claim 6, comprising a photographic base, enclosed by a water repellent coating, on the front side of which base a photosensitive material is applied, and further comprising a plurality of position-indicating marks, characterized in that the plurality of position-indicating marks is applied directly on the photographic base.

16. Photographic paper according to claim 15, wherein the position-indication of a mark is provided by digitized information contained in said mark.

17. Photographic paper according to claim 15, wherein the roll-orientation of a mark is provided by digitized information contained in said mark.

18. Photographic paper according to claim 15, wherein said marks are not visible for the human eye.

19. Photographic paper according to claim 15, wherein said marks are applied to the back of the photographic base.

20. Photographic paper according to claim 15, wherein said marks are applied at regular intervals.

21. Photographic paper according to claim 15, wherein said marks are spaced at a distance ranging from 10 cm to 20 m.

22. Photographic paper according to claim 15, wherein said marks are applied by pinstamp techniques, moulding.

23. Photographic paper according to claim 15, wherein said marks are applied by laser engraving.

24. Photographic paper according to claim 23, wherein said mark is applied by ink jet printing.