Where is the stacked copy tray of Lenovo All-in-one machine?

The stacked copy paper tray of Lenovo MFP is under the copier.

The copy machine is a simulation method and can only copy documents faithfully. In the future, the copiers of OfficeMate office partners will develop in the direction of digital copiers, making it possible to store and transmit images, as well as edit and layout (image synthesis, information addition or deletion, partial enlargement or reduction, error correction), etc. It can be connected to computers, word processors and other microprocessors through interfaces, becoming an important part of the regional network. Multifunctionality, colorization, cheapness and miniaturization, and high speed are still important development directions.

The inventor of the copier, Chester Carlson (also translated as Chester Carlson), was originally a patent lawyer, part-time researcher and inventor. His job at the New York Patent Office required copying numerous important documents. Carlson suffered from arthritis and found copying files a painful and monotonous task. This encouraged him to experiment with photoconductivity, estimating that photocopies could be made most simply. Carlson conducted electrophotography experiments in his home kitchen and applied for a patent for the process technology in 1938. He created the first photocopying products using sheets of zinc masked with sulfur. He built the first "photocopying machine" using a zinc plate covered with sulfur. The words "10-22-38 Astoria" were printed on a microscope slide that was placed on sulfur and exposed to a bright light. After the slides were taken away, the mirror image of those words remained on the brimstone. Carlson planned to sell his invention to a number of companies, but the process was immature and failed to materialize.