Printhead mounting and movement control assembly
US4705414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1987 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jan 28, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J25/316
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An assembly for positioning a print head so as to transfer ink from an ink ribbon to a printing medium positioned on a movable platen adjacent to said ribbon supports the print head on a rocker member which enables the head to be swung between a print position wherein it engages the ink ribbon and a feed position wherein the head is spaced from the ribbon enabling ribbon to be moved. The rocker is rocked to move the head between its two positions by a rotary cam driven by a small low-power electric motor. When the cam engages the rocker member at selected angular positions, the head is maintained in its retracted feed position; otherwise, the head resides in its print position. The assembly also includes provision for detecting the angular position of the cam so as to produce signals to facilitate repositioning the cam and head promptly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.