Option apparatuses of image formation apparatus, image formation apparatus and image formation system

An image formation system comprising an image formation apparatus and an option apparatus connectable to this image formation apparatus directly or via another option apparatus, capable of connecting a further option apparatus while being connected to said image formation apparatus,

• wherein said option apparatus comprising:
• directly connected communication means for communicating with said image formation apparatus or said other option apparatus;
• and
• option apparatus controlling means for controlling the own operation based on an instruction received from said image formation apparatus directly connected on said image formation apparatus side or said other option apparatus via said communication means, controls and/or monitors the operation of said other option apparatus directly connected away from said image formation apparatus and sends the state of said other option apparatus to be controlled and/or monitored to said image formation apparatus directly connected on said image formation apparatus side or a further option apparatus using said communication means,
• said image formation apparatus comprises image formation controlling means for controlling image formation processing using said option apparatus and monitoring and/or controlling the operation of said option apparatus directly connected through a communication with said option apparatus controlling means of said option apparatus, and
• said image formation controlling means monitors the states of the option apparatuses connected from said directly connected option apparatus onward through a communication with said option apparatus controlling means owned by said directly connected option apparatus.