Abstract: Disclosed is a network apparatuses, which makes it possible to effectively re-establish the cryptographic communication without increasing its processing burden and deteriorating the security aspects of them. The network apparatus that communicates with another network apparatus through a network to exchange cryptographic communication information including a key of cryptograph transmits, when a power off sequence is detected, a request for deleting the cryptographic communication information to the other network apparatus through a communication interface section, before a power source section is turned OFF so as to actually deactivate the network apparatus.

Abstract: There is described an image forming system, which makes it possible to speedily implement the reprinting operation, and to alleviate the burden of the printer controller. The system includes a printer controller to parse a print job described in a Page Description Language so as to generate image data; and an image forming apparatus, configured separately from the printer controller, to implement a printing operation based on the image data. The printer controller applies a first processing to the print job so as to generate multi-value image data and transmits the multi-value image data to the image forming apparatus. The image forming apparatus applies a second processing to the multi-value image data, received from the printer controller, so as to generate processed image data, serving as printable image data based on which a reproduced image can be directly printed, and implements the printing operation based on the processed image data.

Abstract: An image forming apparatus includes: an image forming section which forms normal images on sheets sequentially based on normal image data and forms sample images on sheets based on sample image data; a discharge section which discharges normal image sheets in a stack which are sheets on which the normal images were formed and sample image sheets which are sheets on which the sample images were formed; and a control section which is configured to control at least one of the image forming section and the discharge section to discharge the normal image sheets in the stack and the sample image sheets to the discharge section so as to enable timings at which the sample image sheets were discharged to be appreciated in the stacked normal image sheets.

Abstract: Disclosed is a network apparatuses, which makes it possible to effectively re-establish the cryptographic communication without increasing its processing burden and deteriorating the security aspects of them. The network apparatus that communicates with another network apparatus through a network to exchange cryptographic communication information including a key of cryptograph transmits, when a power off sequence is detected, a request for deleting the cryptographic communication information to the other network apparatus through a communication interface section, before a power source section is turned OFF so as to actually deactivate the network apparatus.

Abstract: An image forming apparatus includes: an image forming section which forms normal images on sheets sequentially based on normal image data and forms sample images on sheets based on sample image data; a discharge section which discharges normal image sheets in a stack which are sheets on which the normal images were formed and sample image sheets which are sheets on which the sample images were formed; and a control section which is configured to control at least one of the image forming section and the discharge section to discharge the normal image sheets in the stack and the sample image sheets to the discharge section so as to enable timings at which the sample image sheets were discharged to be appreicated in the stacked normal image sheets.

Abstract: There is described an image forming system, which makes it possible to speedily implement the reprinting operation, and to alleviate the burden of the printer controller. The system includes a printer controller to parse a print job described in a Page Description Language so as to generate image data; and an image forming apparatus, configured separately from the printer controller, to implement a printing operation based on the image data. The printer controller applies a first processing to the print job so as to generate multi-value image data and transmits the multi-value image data to the image forming apparatus. The image forming apparatus applies a second processing to the multi-value image data, received from the printer controller, so as to generate processed image data, serving as printable image data based on which a reproduced image can be directly printed, and implements the printing operation based on the processed image data.

Abstract: Disclosed is an-image data processing apparatus including: an authentication section which authenticates a user who uses at least a part of the image data processing apparatus, based on inputted authentication information and previously set authentication information; and a controlling section which attaches the previously set authentication information as information to authenticate the user of the image data with an image data to be stored in an external storage.

Abstract: An image forming apparatus includes: a tray on which documents are stacked; a first document size detector for detecting a size of the documents stacked on the tray; a second document size detector for detecting a size of each of the documents conveyed from the tray; an automatic document feeding device having a document reading section for reading an image of each of the documents; an image forming section including a transfer material feeder for feeding transfer materials; and a controller for selecting and feeding transfer materials according to the detected document size.