Image forming apparatus, computer-readable recording medium storing program, and image forming system

A computer-readable recording medium storing a program causing a computer to executes processes of:

• acquiring a print job issued from a communication terminal operated by a user;
• detecting the user existing in a detectable area;
• determining whether or not the user detected in the detectable area is an output-permitted user who has issued a security job that requires user authentication;
• authenticating the user who has been determined to be the output-permitted user;
• detecting an outsider other than the output-permitted user existing in an outsider detection area;
• calculating, on a basis of the content of the security job acquired from the communication terminal, an output-process-start distance defining an output-process-start area in which an image forming portion is allowed to perform image forming processing based on the security job;
• calculating a trajectory of the movement of the outsider detected in the outsider detection area;
• calculating, on a basis of the calculated movement trajectory, an outsider-use-possibility indicating a possibility of using a target apparatus by the outsider;
• and
• comparing the calculated outsider-use-possibility with a preliminarily set threshold value, and causing the image forming portion to perform image forming processing based on the security job issued by the output-permitted user in a case where the outsider-use-possibility calculated by the outsider-use-possibility calculation portion becomes equal to or smaller than a predetermined threshold value and also the output-permitted user has been detected in the output-process-start area.

An image forming system comprising an image forming apparatus configured to form an image on a sheet, and a terminal device configured to transmit identification information of a user,

• the image forming apparatus including:
• a job acquisition portion configured to acquire a print job issued from a communication terminal operated by a user;
• an image forming portion configured to perform image forming processing to form an image on a sheet on a basis of the print job;
• a user detection portion configured to detect the user existing in a detectable area;
• a user determination portion configured to determine whether or not the user detected by the user detection portion is an output-permitted user who has issued a security job that requires user authentication;
• an authentication portion configured to authenticate the user who has been determined to be the output-permitted user by the user determination portion;
• an outsider detection portion configured to detect an outsider other than the output-permitted user existing in an outsider detection area;
• an output-process-start distance calculation portion configured to calculate, on a basis of the content of the security job acquired by the job acquisition portion, an output-process-start distance defining an output-process-start area in which the image forming portion is allowed to perform image forming processing based on the security job;
• a movement trajectory calculation portion configured to calculate a trajectory of movement of the outsider detected by the outsider detection portion;
• an outsider-use-possibility calculation portion configured to calculate, on a basis of the movement trajectory calculated by the movement trajectory calculation portion, an outsider-use-possibility indicating a possibility of using a target apparatus by the outsider;
• and
• an image forming control portion configured to perform a control of causing the image forming portion to perform image forming processing based on the security job issued by the output-permitted user, in a case where the outsider-use-possibility calculated by the outsider-use-possibility calculation portion becomes equal to or smaller than a predetermined threshold value and also the output-permitted user has been detected in the output-process-start area.