Abstract: The printer driver, a program to be executed by the host, upon receiving a print request, requests the printer to send the calibration information, stores the calibration information transferred from the printer and generates a correction table based on the calibration information stored. By referring the correction table the printer driver corrects the print data to generate a print job of binary data and sends the print job to the printer. In a configuration in which the host corrects the print data and sends the corrected print data to the printer, efficient and precise calibration can be carried out without the user taking much time and trouble.

Abstract: This invention discloses a printing control apparatus capable of allowing even an inexperienced operator to execute a printing process by properly and efficiently using a plurality of printing devices in accordance with the contents of each job, printing conditions, and the like. A printing control apparatus according to a preferred embodiment of this invention determines device combinations suitable for the attributes of a printing job from performance information of the devices and the attributes of the printing job. The printing control apparatus presents the combinations so as to be able to select one of them, and displays an explanation of printing process steps using the selected combination.

Abstract: A printing apparatus prints a plurality of data sets, each being composed of a plurality of pages, to a plurality of paper discharging device.

Abstract: A print system which can improve searching performance and operability at the time of using boxes of a printing apparatus is provided. In a host, as a box dialog for designating the box serving as an input destination of a print job in accordance with the operation of the user, one of a box dialog including a list of box information regarding a plurality of boxes of a printer and a box dialog including a list of box information regarding the box used as an input destination of the print job is selected and displayed onto a display unit. The box serving as an input destination of the print job is designated on the displayed box dialog in accordance with the operation of the user.

Abstract: In a two-component developing unit, by devising the layout of magnetic poles 6 (particularly a pickup magnetic pole 6b and a trimming magnetic pole 6c) of a magnet member 5 arranged inside a developer carrier 3, an excess portion of a developer G picked up onto the surface of the developer carrier 3 is allowed to drop in the vicinity of the height of the rotational center O of the developer carrier 3, and only the developer G restricted to a predetermined layer thickness is carried and transported to a development region m. A charging member 9 is disposed over a periphery of the developer carrier 3, as required. In addition, the layout of the magnetic poles 6 of the magnet member 5 arranged inside the developer carrier 3 is set variably between the time of development and the time of nondevelopment, and the amount of developer carried on the surface of the developer carrier and transported to the development region m is set to substantially zero at the time of nondevelopment.

Abstract: A networked printing system has the capability of selecting a particular paper feeding slot of a printer by designating a paper name assigned to that particular paper feeding slot. Thus, an optimum printing operation is performed by the printer assigned that paper name. A controller communicates with the respective printers and produces a paper name information table. A paper name list is then produced according to this paper name information table. In accordance with the paper name list, a list of selectable paper names is displayed on a printing operation control screen. If a particular paper name is selected by a user from this list, then a printer assigned the selected paper name is retrieved from the paper name information table, and the retrieve printer is employed as the destination to which printing information is output.

Abstract: In a two-component developing unit, by devising the layout of magnetic poles 6 (particularly a pickup magnetic pole 6b and a trimming magnetic pole 6c) of a magnet member 5 arranged inside a developer carrier 3, an excess portion of a developer G picked up onto the surface of the developer carrier 3 is allowed to drop in the vicinity of the height of the rotational center O of the developer carrier 3, and only the developer G restricted to a predetermined layer thickness is carried and transported to a development region m. A charging member 9 is disposed over a periphery of the developer carrier 3, as required. In addition, the layout of the magnetic poles 6 of the magnet member 5 arranged inside the developer carrier 3 is set variably between the time of development and the time of nondevelopment, and the amount of developer carried on the surface of the developer carrier and transported to the development region m is set to substantially zero at the time of nondevelopment.

Abstract: The present invention provides a printing apparatus for printing a plurality of data sets, each being composed of a plurality of pages, to a plurality of paper discharging device, and also a controlling method thereof.

Abstract: A print output apparatus, etc., designed to effectively increase the speed of printing started when the apparatus is in a sleep state. Before print data is transferred to the print output apparatus, a first command for making the print output apparatus to execute processing for shifting from the sleep state to a standby state and a second command to stop calibration processing are sent to the print output apparatus.

Abstract: To perform control so as to acquire a list of print style information stored in an output device, specify a particular piece of print style information in the acquired list, generate print data associated with the specified piece of print style information, and store the generated print data in the output device or output the generated print data from the output device.

Abstract: Print data is stored into a spool device and a predetermined number of copies are printed. A size (ADsize) of print data is compared with a memory capacity (SDsize) of the spool device. When the size of print data exceeds a capacity of the spool device, the print data is divided into a plurality of print jobs on a page unit basis so that the print data lies within the memory capacity. The number of copies is designated for each of the divided print jobs, the print jobs are sequentially stored into the spool device, and the designated number of copies of each print job are printed, respectively.

Abstract: Print data is stored into a spool device and a predetermined number of copies are printed. A size (ADsize) of print data is compared with a memory capacity (SDsize) of the spool device. When the size of print data exceeds a capacity of the spool device, the print data is divided into a plurality of print jobs on a page unit basis so that the print data lies within the memory capacity. The number of copies is designated for each of the divided print jobs, the print jobs are sequentially stored into the spool device, and the designated number of copies of each print job are printed, respectively.

Abstract: When data of one page is output for a predetermined amount, the host unit performs division of the printing data into a plurality of divided jobs a predetermined calibration on the basis of the calibration execution. For every divided job, the most recent calibration information from a printer-side is obtained. On the basis of the obtained calibration information, a density correction value of a .gamma. correction table is updated. Then, the .gamma. correction table performed calibration is used for performing printing of the divided jobs. By this, the printing apparatus performs a printing operation according to the printing job output from the host unit to enable appropriate calibration when a large amount is printed for the same information.

Abstract: A photographic developing apparatus which visualizes a latent image formed on an image carrier is disclosed which includes:a developing powder carrier provided so as to be opposite to the image carrier;a layer forming member for forming a thin layer of developing powder over a circumferential surface of the developing powder carrier;a charge imparting member which is provided so as to be opposite to the developing powder carrier and causes an electric field between the charge imparting member and the developing powder carrier; andan electrification control member which is interposed between the charge imparting member and the developing powder carrier, and limits an ionization area caused by electric discharge in the electric field by receiving an intermediate electric potential between the electric potential of the charge imparting member and the electric potential of the developing powder carrier.

Abstract: An image forming apparatus performs a stable developing characteristic for an electrostatic latent image including a halftone image expressed by a binary manner. The apparatus includes a photoreceptor having a surface and an electrostatic image forming device for forming an electrostatic latent image on the surface of the photoreceptor, the electrostatic latent image including a digitally-reproduced binary latent image. The apparatus further includes a developing device for developing the electrostatic latent image. The developing device includes a two-component developer including magnetic carrier particles and toner particles. The apparatus also includes a bias applying device for applying a bias voltage between the developing device and the photoreceptor for defining a relatively high contrast potential of the digitally-reproduced binary latent image to be developed.

Abstract: A carrier of developers composed of a composition represented by (MO).sub.X (Fe.sub.2 O.sub.3) having bulk density of 1.8-3.4 g/Cm.sup.3 and magnetization of 10-30 emu/g in a magnetic field of 450-1000 O (oersted), where M is at least one metal selected from the group comprising lithium, manganese, nickel, zinc, cadmium, copper, cobalt, and magnesium.

Abstract: A device for developing an electrostatic latent image recorded on a photoconductive layer. The developing device comprises a doner roll for supporting a uniform layer of single-component developing material adjacent to the photoconductive layer. The doner roll is disposed as to create a space gap between the photoconductive layer and the doner roll. The doner roll is made of semiconductive material having a specific resistance ranging from 10.sup.6 to 10.sup.12 .OMEGA.cm. An electrical bias potential is applied across the gap, thereby establishing a field for transferring the developing material from the doner roll to the photoconductive layer.