摘要:
In a field emission device, the fundamental cause of spherical aberration in an emitted electron beam trajectory is eliminated or mitigated. An aberration suppressor electrode 31 is provided at a lower vertical position than an extraction gate electrode 13 so its opening inner peripheral edge 31e faces a position near an emitter tip 11tp. The vertical position of the opening inner peripheral edge 31e of the aberration suppressor electrode 31 is made lower than the vertical position of the emitter tip 11tp. An aberration suppressing voltage Vsp is applied to the aberration suppressor electrode 31 that is a lower voltage than the potential of the emitter 11 and controls equipotential lines near the emitter tip 11tp to make them parallel.
摘要:
In a field emission device, the fundamental cause of spherical aberration in an emitted electron beam trajectory is eliminated or mitigated. An aberration suppressor electrode 31 is provided at a lower vertical position than an extraction gate electrode 13 so its opening inner peripheral edge 31e faces a position near an emitter tip 11tp. The vertical position of the opening inner peripheral edge 31e of the aberration suppressor electrode 31 is made lower than the vertical position of the emitter tip 11tp. An aberration suppressing voltage Vsp is applied to the aberration suppressor electrode 31 that is a lower voltage than the potential of the emitter 11 and controls equipotential lines near the emitter tip 11tp to make them parallel.
摘要:
An image forming apparatus administration system is provided which includes an image forming apparatus, which is located in a first local network and connected to the Internet through a first firewall server, an administration computer, which is located in a second local network and connected to the Internet through a second firewall server, and a relaying server, which is located outside the first local network and the second local network and is connected to the Internet. The administration computer transmits information for administrating the image forming apparatus to the relaying server, and accesses the relaying server to obtain information corresponding to a state of the image forming apparatus. The image forming apparatus accesses the relaying server at a predetermined timing to obtain the information from the administrating computer, and transmits information corresponding to the state of the image forming apparatus to the relaying server.
摘要:
A printing system, provided with a first administrating section for administrating the number of sheets remaining until the number of printed sheets reaches to a predetermined upper limit of the number of sheets, a second administrating subsection for administrating the number of reserved sheets being under a waiting condition for being printed and outputted in the printing section, and a judging section for comparing the total number of sheets of the number of reserved sheets and the number of scheduled sheets indicated in a printing permission request with the number of remaining sheets when receiving the printing permission request. The judging section judges from the comparison whether or not the printing requested by the printing permission request is to be permitted, and transmits the judgment result as the response to the printing permission request.
摘要:
An administration system, including an administrated machine, such as a copying machine, for being administrated; and an administration machine, connected with the administrated machine through communication lines, for administrating the administrated machine. The administrated machine further includes: a) a trouble type judging section for detecting a trouble caused on the administrated machine and for judging a type of the trouble. In the administration system, the administrated machine makes the administration machine, connected to the communication lines, obtain trouble type information corresponding to the trouble type judged by the trouble type judging section; and the administration machine makes the administrated machine to obtain, based on the trouble type information, restoration work information stored in advance to be in connection with the trouble type information.
摘要:
The image forming apparatus, for printing print data, and a printing control apparatus, for controlling a printing operation of the image forming apparatus, are connected through a network. In the printing control apparatus, there are provided an authentication means that authenticates a user of the image forming apparatus, a discriminating means that discriminates whether print data for which the printing is instructed by the authenticated user is for public business or for private business, a recording means that records information relating to printing of print data as private business information corresponding to the user when the print data are discriminated by the discriminating means to be for private business and a charging means that charges for private business printing of the user based on the private business information recorded on the recording means.
摘要:
An image forming apparatus administration system is provided which includes an image forming apparatus, which is located in a first local network and connected to the Internet through a first firewall server, an administration computer, which is located in a second local network and connected to the Internet through a second firewall server, and a relaying server, which is located outside the first local network and the second local network and is connected to the Internet. The administration computer transmits information for administrating the image forming apparatus to the relaying server, and accesses the relaying server to obtain information corresponding to a state of the image forming apparatus. The image forming apparatus accesses the relaying server at a predetermined timing to obtain the information from the administrating computer, and transmits the information corresponding to the state of the image forming apparatus to the relaying server.