Do you want to ask why the PDF electronic chapter prints out orange?

1. PDF file settings: First, please make sure the color of the electronic chapter in the PDF file is set to black or other colors you desire. Some PDF editing software or electronic signature tools may set the color of the electronic seal to orange by default. You can use the corresponding software to reset the color of the electronic seal.

2. Print settings: Check your printer settings and printing options. Some printers may convert colors to a specific color mode (such as CMYK or RGB) based on default settings or the print driver's configuration, which may cause color differences. You can try adjusting your printer settings to make sure the color mode is what you expect.

3. Printer cartridge: If your printer uses color cartridges or inks instead of black cartridges, the color of the electronic seal may be affected by the color of the cartridge itself. Please check your printer cartridges and make sure they are working properly and have the correct color.