Door locks

A door lock system comprising:

• a signal generator to transmit a first signal in a signal path;
• a sensor to receive the first signal;
• a button to open or block the signal path;
• a first link member to detect a state of position of a door to a consumables compartment of an electronic device;
• a processor operatively connected to the sensor and the first link member, the processor to:
• detect whether the button is in a depressed position based on whether the sensor uninterruptedly receives the first signal;
• receive the state of position of the door from the first link member;
• and
• generate a second signal upon detecting that the sensor fails to receive the first signal, and determining that the state of position of the door is closed;
• a second link member engaged by the button to unlock the door upon aligning with the button;
• and
• a transducer to move the second link member in an aligned position with the button upon receiving the second signal from the processor.

A machine-readable storage medium comprising instructions that when executed cause a processor of an electronic device to:

• transmit a first signal in a signal path towards a sensor;
• detect a position of a door to a consumables compartment of the electronic device;
• detect whether the signal path is blocked preventing reception of the first signal by the sensor due to any of an initial pressing of a button and the door being in an open position;
• transmit a second signal upon determining that the signal path is blocked, determining that a subsequent pressing of the button has occurred, and determining that the door is in a closed position;
• and
• release a door lock from the door upon transmission of the second signal.