Can I fax stamped documents?

Color fax machines can fax color documents, but the recipient must also have a color fax machine, otherwise the documents will still be in black and white when they are passed around, but most documents accept faxed black and white documents.

So if you want to fax a stamped document, you can use a color fax machine to fax it. Most documents can also be faxed in black and white, or you can stamp the official seal after receiving the black and white document. If you fax a red-stamped document, you should pay attention to protecting the document. It is best to use a photocopier to make a clear black-and-white copy of the document before faxing it. This serves two purposes:

1. Chapter document protection, the fax paper feeding system may damage the original document, such as paper jams, roll paper, etc.

2. Some fax machines are not sensitive to red, and the red stamp cannot be scanned clearly when faxed. In the fax document received by the receiving end, the red stamp will be very faint or even invisible at all.

Extended information

A color fax machine is a fax machine that copies and transmits color text, charts, and graphics. Color fax technology includes three aspects: transmission, photography and recording, which respectively involve color signal transmission, three primary color decomposition and color reproduction technology. When sending, the color original is decomposed into three primary color components (red, green, and blue), and the corresponding electrical signal is generated after inputting into the photoelectric conversion device. It is mainly used for news agencies to transmit color photos or for special departments to transmit color maps, graphics, etc.

Reference: Baidu Encyclopedia - Color Fax Machine