Method for printing on transparent substrate in order to optimize later markability
US6655862B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J3/60
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to the printing of transparent media often used for later projection, commonly referred to as Over Head Transparencies, or OHT's. These OHTs are used in several ways: They can be printed in advance and projected in sequence, created in the course of the presentation using marking pens, or a combination of he two, where a pre-printed OHT is edited or modified after printing or in the course of presentation using pens or other marking means. This third use is often compromised by incompatibilities between the marking technology used to create the pre-printed image and the marking pens used to edit the image later. This invention describes a technique for separating the two images, placing each on opposite sides of the transparent film, avoiding this conflict and producing a better solution for the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.