Automatic pattern original reading apparatus
US4807296A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1985 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Jun 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/175
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An automatic pattern original reading apparatus is disclosed in which perforation position coordinate data of a pattern original indicating a perforation position of a printed substrate is stored beforehand, and a hole diameter indication sheet having a colored indication which discriminates perforation diameter and which is located at a position corresponding to the perforation position of the pattern original is placed on a table. The table and an optical system for optically reading reflected light from the color indication through color filters are moved relatively to each other by position control circuits to the perforation position. The color detection output from the optical system is discriminated with respect to color by a color discrimination circuit, and the color discrimination output is stored in a memory as hole diameter information in a corresponding relationship with the perforation position coordinate data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.