Paper feed system

A paper feed system comprising:

• a paper feed apparatus configured to accommodate stacked paper and sense a paper shortage state and a paper replenishment completion state;
• a communication unit provided to be integrated with or correspond to the paper feed apparatus, and configured to transmit a paper replenishment request signal when the paper feed apparatus senses a paper shortage state and transmit a paper replenishment completion signal when the paper feed apparatus senses a paper replenishment completion state;
• a first server configured to communicate with the communication unit over a communication network;
• and
• a second server configured to communicate with the first server over a communication network;
• wherein the paper feed apparatus comprises:
• a main body configured such that a paper outlet is formed in an upper part of a front side thereof, a space is formed therein, and a door configured to be selectively opened and closed is formed in the front side thereof;
• a paper support plate formed in a plate shape so that paper is stacked and supported thereon;
• an elevation unit installed inside the main body, and configured to selectively elevate and lower the paper support plate;
• a power unit mounted in a lower part of the main body, and configured to move the paper support plate;
• a sensor configured to measure a weight of the paper stacked on the paper support plate;
• and
• a controller configured to control driving of the power unit in conjunction with the sensor;
• and
• wherein the first server:
• transmits a paper payment request signal to the communication unit in response to the paper replenishment request signal when receiving the paper replenishment request signal from the communication unit;
• and
• transmits a paper feed service provision signal to the second server when determining that payment is completed in response to the paper payment request signal.