EP0221472A2
Expired / Lapsed
EP
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An apparatus and a method for measuring registration errors of a print
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1986-10-24
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Granted: —
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Expires: 2006-10-24
Abstract
Abstract A handy type image inputting device is utilized to be set over a portion of a print (x) to be inspected to input the image of the registration marks. The image inputted by the device is displayed on a display device (4) so as to provide an enlarged image to be observed for measurement of registration error. At least two kinds of registration marks such as those which have no spacings when registration is completed and those which have regular spacings when registration is completed may be utilized.
Inventors
- 👤 Michiaki Kobayasha
- 👤 Daiji Suzuki
- 👤 Kenji Yamada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:59
CPC Classifications
B; B41; B41F; B41F33/00; B41F33/0081
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
An apparatus for measuring registration errors of a print comprising: means for inputting an image of registration marks printed at a predetermined portion of a multicolor print to be inspected; and a display for displaying said registration marks inputted by said image inputting means so as to measure said registration errors according to the image displayed, characterized in that said image inputting means is a handy type device so as to be set over the registration mark on the print for inputting the image of said registration mark.
Claim 2
Independent Claim
88 words
An apparatus for measuring registration errors of a print comprising: means for inputting an image of registration marks printed at a predetermined portion of a multicolor print to be inspected; and a display for displaying said registration marks inputted by said image inputting means so as to measure said registration errors according to the image displayed, characterized in that said image inputting means is a handy type device so as to be set over the registration mark on the print for inputting the image of said registration mark.
Claim 3
Independent Claim
27 words
An apparatus as set forth in claim l, wherein said image inputting means comprises a camera and an illuminating means for illuminating the surface of the print.
Claim 4
Dependent Claim
32 words
An apparatus as set forth in claim 2, wherein said camera comprises a camera body and a light guide for guiding light from the surface of the print to said camera body.
Claim 5
Dependent Claim
36 words
An apparatus as set forth in claim 2, wherein said illuminating means comprises a light emitting means and a light guide means for guiding light from said light emitting means to the surface of the print.
Claim 6
Independent Claim
25 words
An apparatus as set forth in claim l, wherein said image inputting means comprises a spacer for supporting said image inputting means over the print.
Claim 7
Dependent Claim
17 words
An apparatus as set forth in claim 5, wherein said spacer is made of a transparent material.
Claim 8
Independent Claim
110 words
A method for measuring registration errors comprising the steps of: inputting images of registration marks printed at a predetermined portion of a multicolor print; and displaying enlarged image of the registration marks on a display for measurement of registration errors according to the displayed image, characterized by comprising the steps of: printing registration marks, regularly aligned with predetermined spaces therebetween, printed at a predetermined portion of a print to be inspected when the registration is completed; and displaying enlarged image of said marks on a display, thereby measuring the amount of registration error according to the positions of the registration marks of the respective color and its percentage of enlargement.
Claim 9
Independent Claim
110 words
A method for measuring registration errors comprising the steps of: inputting images of registration marks printed at a predetermined portion of a multicolor print; and displaying enlarged image of the registration marks on a display for measurement of registration errors according to the displayed image, characterized by comprising the steps of: printing registration marks, regularly aligned with predetermined spaces therebetween, printed at a predetermined portion of a print to be inspected when the registration is completed; and displaying enlarged image of said marks on a display, thereby measuring the amount of registration error according to the positions of the registration marks of the respective color and its percentage of enlargement.
References Cited (Backward Citations)
No citation records indexed.
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