Method for synchronizing print start positions for an inkjet printer carriage
US6471319B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/202
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for synchronizing the print start position for a printer carriage on an inkjet printer that includes the steps of: (a) providing an encoder signal indicative of a position of an inkjet printer carriage relative to a substrate being printed upon or a printer platen, where the encoder signal is an alternating voltage signal with an encoder signal frequency; (b) filtering and dividing the encoder signal to provide a fire pulse signal, where the fire pulse signal is an alternating voltage signal with a fire pulse signal frequency that is a multiple of the encoder signal frequency; (c) detecting a rising edge of the encoder signal preceeding a predetermined print start position of the printer carriage; (d) upon detection of the rising edge of the encoder signal in step (c), detecting a next falling edge of the fire pulse signal; (e) upon detection of the next falling edge of the fire pulse signal in step (d), detecting a count of the next rising edges of the fire pulse signal; and (f) assigning a synchronized print start position at an end of the count.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.