Digital hand stamp with memory to store multiple images
US6991332B1 · kind B1 · utility
Inventors
Key dates
| Filing date | May 2, 2003 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J3/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A digital hand stamp that can print multiple images on a supporting surface. The digital hand stamp includes a frame member, an ink jet printing head, a non-volatile memory, an image selection button, a display area, and a printing control circuit. The frame member has a cavity. The ink jet printing head has one or more nozzles. The ink jet printing head can be activated to slide inside the cavity of the frame member when the digital hand stamp is pressed against the supporting surface. The non-volatile memory can store a plurality of images. The image selection button can select an image from the plurality of images stored in the non-volatile memory. The display area can display the image selected by the selection button. The printing control circuit controls the nozzles on the ink jet printing head to project an ink pattern on the supporting surface when the ink jet printing head slides inside the cavity of the frame member. The ink pattern on the supporting surface represents the image selected by the image selection button.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.