Method for forming data cards with registered images
US4818852A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Mar 27, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0033
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Data cards are formed by writing a succession of latent images on a first web of photosensitive film, developing the film and then joining the film with a web of high resolution laser optical recording tape. The webs may be joined in either back-to-back or front-to-back relationship. In the first case there is an eye readable image on one side and formatted optical recording tape on the opposite side. In the second case an eye readable image is optionally adjacent optical recording tape, but on different layers, with both readable from the same side through a transparent substrate or base. The composite web is cut transversely to its lengthwise dimension into a plurality of wallet size members. Bar code is recorded together with the latent image so that in checking cards for quality control purposes, defective cards may be correlated with particular images in order that a defective card be recreated. The high resolution optical recording tape is preformatted with continuous servo tracks or data location grids without header information so that registration of the eye readable images and the laser recording tape is not necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.