Technical writers on Digital Senders

We buy, sell, refurbish, repair and service 9100C digital senders. Need 5 articles on them. 1. how the technology works 2. maybe something on the patents, context, what they show about how the technology 3. How to buy a digital sender - what to look for etc. 4. Review of a digital sender 9100c 5. one more topic is there - still undecided. Articles should feature links to outside resources, diagrams, pictures as needed etc. Clear, concise and grammatically correct English required. If you have great technical knowledge about digital senders or something unique and interesting to say about them, it would be appreciated. It is OK to use readily available open source information. Much information on digial senders is available on HP's forums. However, all work MUST be your own, no plagiarism.