Motor control system of printer
US4733981A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Aug 7, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/202
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A motor control system of a printer of the type wherein a desired slow-up of a print head is effected by making use of the rotation of a stepping motor and printing is performed by the use of the head, which is characterized by a slow-up means for increasing gradually a drive frequency of the stepping motor from the stopped state of the head so as to provide a print speed required for the head to perform a print action thereby to result in a desired drive frequency, and a print processing means for instructing the head to perform printing, wherein the slow-up means effects slow-up over and beyond an inter-character space extending up to a next print character, and the print processing means instructs printing after passed over the inter-character space and even while slow-up is being effected, whereby the print speed can be enhanced while maintaining the quality of print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.