To protect the secrecy of information needed in a certain working process against other working processes.
A server printer that executes a printing process matching a print order from a client includes a plurality of processing means for executing either of one or more processes included in the printing process, and a management means for managing the processes executed by the plurality of processing means. The management means includes a creation means for determining an execution procedure using at least one of the processing means for the printing process that matches the print order and creating execution procedure information for executing the printing process; an encryption key storage means for storing an encryption key uniquely imparted to each of the plurality of processing means; and an encryption process means for encrypting information related to each of the processing means in the execution procedure information by means of the encryption key unique to each of the processing means. The printing process matching the print order is executed using the execution procedure information.
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
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