| ??? 03/17/05 13:28 Read: times |
#89865 - short strobe? Responding to: ???'s previous message |
The strobe is maybe too short.
This is unrelated to the step delay. In fact you should switch off the strobe between steps. You are supposed to deliver enough energy to the heating element to "cook" the paper. You should find related data in the datasheet + some data for the paper, it is usually given in mJ/dot (around 0.30 mJ/dot or so). If you can't find it, try experimenting. Is your Vpp powerful enough? Check with an oscilloscope diractly at the printer's connector, if it does not drop during firing too much. And listen to Ian, he has many good points - you need to latch data first. Jan Waclawek PS. I lost my original LT-286 manual, but just downloaded it from http://www.goodson.com.au/download/...ations.pdf and... striking similarities ... Try downloading it, it has a good chart for the step/data loading/latch/strobes timing, very illustrative; and also goes into detail for the strobe pulse calculation. |
| Topic | Author | Date |
| About developing thermal printing!! | 01/01/70 00:00 | |
| Guesses | 01/01/70 00:00 | |
| more guesses | 01/01/70 00:00 | |
| Oooh/. | 01/01/70 00:00 | |
| Thermal Printing | 01/01/70 00:00 | |
| Thanks for all your valuable experience! | 01/01/70 00:00 | |
| Does your paper advance? | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| short strobe? | 01/01/70 00:00 | |
| Some Answers | 01/01/70 00:00 | |
| Sorry, after testing, still have problem | 01/01/70 00:00 | |
| Print Sequence | 01/01/70 00:00 | |
| Thanks, i can print something now, but.. | 01/01/70 00:00 | |
| can print almost correct data now | 01/01/70 00:00 | |
| Print Sequence | 01/01/70 00:00 | |
| Advanced Printing | 01/01/70 00:00 | |
| Thermal printing larks... | 01/01/70 00:00 | |
Wrinkles | 01/01/70 00:00 | |
| circuit for the head | 01/01/70 00:00 | |
| The documentation of SMP610 | 01/01/70 00:00 |