Presentation of printer status in an information-processing system

Abstract: In an information-processing system comprising workstations and at least one printer interconnected by a digital network, the current state of the printer or printers is presented on the screen of a workstation in the form of an icon. The printers are of a type which can carry out printing processes in an autonomous mode, in which a print job sent from a workstation is executed directly, and in a command-controlled mode in which a reproduction process, including a copying process, must be started from an operator control panel on the printer. When the printer is "occupied" in the autonomous mode, a different icon is displayed from that displayed when the printer is "occupied" in the command-controlled mode.

Description: The invention relates to an information-processing system comprising: at least one workstation provided with a processor unit, a screen and operator control means such as a keyboard and mouse, at least one printer provided with a control unit and an operator control panel, and a digital network to which the workstations and the printers are connected, wherein a workstation is provided with a program for communication with a printer for sending print jobs to said printer and calling up or receiving status information concerning said printer, which program comprises means for displaying on the workstation screen in the form of a symbolic illustration or icon current status information concerning said printer. The invention is also directed to a method as used in the above-mentioned system and to a computer program for executing the method. A system of this kind is known from EP-A 0 398 648. In this known system the status of application programs, including a printer application, is displayed by means of icons on the screen at the workstations. When the status of an application changes, the icon of that application is dynamically adjusted in this system, by the addition of a different icon. Another system of this kind is disclosed in US-A-5 727 135. This system comprises a printer for use in a network, that is specifically adapted to communicate status information to host computers connected to the network, using a dedicated NPA Protocol. This known printer has a console including a display and operating elements. Messages, including status messages, such as "READY", may be displayed on the console display. A real-time image of the console, including the display and the messages thereon, may be shown on the display screen of a host computer. Also, a "main utility screen" may be displayed on the display screen of the host computer. This screen shows a list of all connected printers and more detailed status information of one selected printer. In Applicants' patent application EP-A 0 814 424, a digital copying machine is described comprising a scanner and a printer section, wherein the printer section can also be used as a network printer. This machine is adapted to receive and process two types of print jobs from a workstation coupled to the network, namely automatic print jobs which, after receipt, must be printed directly and without the intervention of a printer operator, and interactive print jobs (referred to as "deferred print jobs" in the said patent application), which are only received by the printer and stored in a memory, but are not printed, unless an operator selects on the printer operator control panel a print job of this kind and gives a print command. This machine thus operates in one of two modes, namely an autonomous mode in which at its own initiative it executes an (automatic) print job, and a command-controlled mode, in which it executes a reproduction job, a copying process or an interactive print process. The use of digital copying machines as network printers gives a new dimension to procedure with these machines. On the one hand, a user who sends his print job to the machine for automatic printing thereby is interested in the question whether the machine is ready to process his print job immediately, and on the other hand the user can immediately see at his workplace (at his workstation) whether the machine is available for a command-controlled job (e.g. a copying job). When a user intends to make a copy or an interactive print, it is not only desirable that he should see on his workstation screen whether the machine of his choice is free or occupied in a copying or printing process, but also to differentiate in detail the information concerning the "occupied" state. An automatic print job can of course be interrupted without obstruction to someone else. The senders of such print jobs usually do not come to fetch their prints immediately, and if these prints are ready somewhat later, because another user has interrupted the printing process for some time, this will usually be readily accepted. Conditions are different if the machine is occupied in the command-controlled mode, namely because an operator is busy at the machine. In that case it is much less acceptable to interrupt the current process because the said operator is waiting for the prints from that process. The invention as defined in the appended independent claims, now meets the demand for extra information, by the fact that the printer control unit is adapted to execute print jobs in either an autonomous mode or a command-controlled mode, and the program displays different icons for those cases in which the printer is active in the said autonomous mode and those in which the printer is active in the said command-controlled mode. A different icon for different "occupied" states is a new solution to a new problem, considered in the light of the prior art. Preferably, an icon has a form which is self-evident, and hence according to one embodiment of the invention the icon for the command-controlled "occupied" mode is preferably in a form which contains a human figure. The invention will now be explained by reference to the following exemplified embodiment and the accompanying drawings wherein: Fig. 1 shows an information-processing system in which the invention is situated. Fig. 2 is a diagrammatic overview of the software according to the invention. Figs. 3 to 13 show information windows displayed by the software according to the invention on the workstation screen. Fig. 1 shows a system of workstations WS and printers PR connected by a local network N. The workstations are, for example, PC's and are in each case equipped with a processing unit, a screen, a keyboard and a mouse. The printers are digital copying machines, each comprising a scanner, a printer, an operator control unit and a connection unit (Digital Access Controller or DAC) for connection to the network and processing print jobs sent from the workstations. In addition it is possible to use machines which only have a printer function but also have a control system adapted to the functionality described hereinafter. All these machines, copying machines and printers, are hereinafter referred to as "printer". Users wishing to have a specific data file printed from their workstation, can for the purpose choose from a number of, or even all, the printers of the system. For the purpose of communication with the printers and the presentation of information relating thereto to the users, there is operative in each connected workstation a program which is hereinafter referred to as "desktop software". This program is personalised, i.e., it works on the instructions of just one user who on starting up has identified himself and input his authorisation code. The desktop software, hereinafter also referred to as "desktop" for short, is built up from a number of sub-programs diagrammatically illustrated in block 100 in Fig. 2. The core of the desktop software is formed by a sub-program indicated by "virtual printer", which communicates with the connected printers and updates the properties and status of each of these insofar as this is of interest to the workstation user. As will be explained in the following description, a user can choose how much information he wants to have presented concerning the state of connected printers and the printing files to be processed thereon and at what time. The exchange of data concerning these matters between the desktop software and the printers is limited to what is essential for the user's requirements. This prevents the network from being burdened more than is necessary and in addition the processing capacity of the workstation is not burdened more than necessary, since only the relevant information is present in the workstation and has to be processed. The "virtual printer" program is provided with an operator control program, hereinafter referred to as "user interface" (UI), which controls the communication between the user and the desktop software in a manner understandable to the user, in the form of key strokes on the keyboard and windows on the screen, in which windows information is presented and in which the user can select and control the operation of elements by means of mouse movements. The desktop software is also provided with a communication program COM for controlling data transport from and to the printers via the network. Block 200 in Fig. 2 gives a diagrammatic illustration of the communication software in the DACs of the printers. This is formed particularly by an "information server" IS, which is intended to receive from and send to workstations digital information such as status information concerning the printer itself and the print jobs that the printer is processing. The information server updates;data concerning the information required by each desktop and transmits only that information which is really required, and at the time at which it is required. The information server is also provided with a communication program COM for controlling data transport from and to the desktops via the network. Files of digital data which are transmitted to a printer via the network for printing by the printer are either of a first or a second type. Files of the first type, hereinafter referred to as automatic print jobs, are required to be printed directly, i.e. without further action by an operator at the printer, while files of the second type, hereinafter referred to as interactive print jobs, must only be stored in the printer memory and must not be printed until an operator at the printer explicitly so requests by selection with the aid of the operator control means. An attribute added to the file shows the type of file involved. Processing of a data file of the first type is referred to in this description as automatic printing (AP). Processing of a data file of the second type is hereinafter referred to as interactive printing (IP). The procedure with this is as follows. A data file for printing by interactive printing and transmitted by a workstation via the network is received by the DAC. This extracts from the file a number of predetermined identification data, such as the name of the owner and the name of the file itself. The file is then stored unchanged on a storage unit, e.g. a hard disk, in the printer, whereafter the machine passes to the stand-by state in respect of this job. The DAC manages an administration system containing the identification data of all the data files for printing which are stored. If a new file is supplied via the network, the DAC adds the identification data thereof in the name of the owner/sender to the administration system. The disk together with the said administration system of the DAC form, as it were, a set of "logic storage spaces" for data files, each logic storage space being allocated to one user. Thus in actual fact storage in a user's logic storage space means that the file is stored on the disk and registered in the administration system in the name of that user. A logic storage space can be protected by a code specific to the owner/user, i.e. in practice an operator can obtain information over the files stored in a specific logic storage space only after he has input this code via the operator control means of the printer. If an operator now wishes to have a specific interactive print file printed, then he must select that file by means of the printer operator control panel and give a print command by actuating a start key. In response thereto the data file is brought up from the disk and converted to printable data, which are processed by the printer to form a print. An interactive print file can be protected by the sender by means of a code. This code is in the form of an attribute to the print file. If a user wishes to print this file interactively, he must type in the security code at the operator control panel before the file is printed. When a data file has been interactively printed, it remains in principle stored on the disk and registered in the administration system until it is removed by the user himself or by the printer manager. The printer manager can bring the machine into a mode in which automatic print jobs are not accepted. In that case, incoming automatic print jobs are converted by the printer into interactive print jobs and stored on the disk. As already stated, at least a number of the printers in this system are in fact digital copying machines, which can also make a copy of an original document by scanning it and printing the digital image data generated thereby. There are therefore jobs which are started by a user at the machine itself (copy jobs and interactive print jobs) and jobs which are fed from a distance, e.g. from a workstation (PC) (an automatic print job). In the former case, the printer operates in a command-controlled mode in which the machine starts a reproduction process in response to a start command from the operator control panel, while in the latter case it operates in an autonomous mode in which the machine starts a reproduction process on its own initiative. A user who has gone to the machine in order to start a job there by means of the keys finds it very frustrating if a remote-started automatic print job begins just before he wants to start his job. He then has to wait until the remote-started job is finished, or he must at least interrupt that job by means of an "interrupt" mechanism, before he can make his copy. This frequently occurs in practice, particularly at a machine which is frequently used, and results in annoyance and delay. In order to protect the position of the user at the machine as much as possible, the machine passes into the command-controlled mode in response to a physical interaction by an operator at the machine, and/or remains there for a predetermined first waiting period. During this waiting period, the machine cannot pass into the autonomous mode. This offers the user at the machine the opportunity of creating, by any interaction, e.g. by actuating a key or placing one or more documents in the machine feed tray, time for himself in order to start his job unhurriedly. In addition, on completion of the execution of a job in the command-controlled mode, the machine remains in the command-controlled mode for a predetermined second waiting time. Thus if the user wishes to process further copying or interactive print jobs, he will not be overtaken by an automatic print job. Also during the said second waiting period, the machine cannot pass to the autonomous mode. The second waiting period can be equal to the first. A practical value for waiting periods is, for example, 30 seconds to 2 minutes. The above-mentioned desktop software will now be described further. The desktop software comprises the following modules: An overview of all available connected printers with an indication of their status (hereinafter referred to as: Devices Overview) An overview of current print jobs with the possibility of intervening in the settings for each job (hereinafter referred to as: Job Control) Information provision concerning the progress of current print jobs (hereinafter referred to as: Job Monitoring). The mode information presented by the three modules of the desktop software is dynamic, i.e. it is adapted directly as soon as there is any change in the presented mode. It should again be noted that the desktop software is personalised and that the information provision and control possibilities are therefore directed towards the wishes of one specific user. The three program modules referred to can be started from a general start menu which appears when the desktop software is selected on the workstation screen, and will now be described in sequence. Fig. 3 shows a window 10 which is displayed on the workstation screen after the user has selected the option "Devices Overview" in the desktop software. This window displays for each printer a symbol indicating the status of that printer. Examples of this are shown in Fig. 3. In addition, each symbol has a short description of the printer so that it is clear which printer is involved. A first symbol 11 is a stylised illustration of the printer. This symbol indicates that the printer in question is available for print jobs and is at the moment idle. A second symbol 12 shows the printer with a stack of papers over it and indicates that this machine is occupied with an automatic print job in the autonomous mode. Symbol 13 shows the printer with a person in front of it, to indicate that the machine is in the command-controlled mode and hence either occupied with a copy job or an interactive print job or is in the above-described first or second waiting period, in which no automatic print jobs can start. Symbol 14 is an illustration of the printer with, superimposed thereon, a notice board indicating that this printer is in a malfunction state. Symbol 15 is an undetailed illustration of the printer to indicate that this printer is connected but at the present time is not available for copy jobs or print jobs. From these symbols a user can determine which printer he should send his print job to, and also, when he wishes to carry out a copying or interactive print job, whether the chosen machine is free. Particularly convenient is the differentiated indication of the occupied state, i.e. occupation in the autonomous mode and occupation in the command-controlled mode, because an automatic print job can without difficulty be stopped during operation by a user at the machine, in order to carry out a copy job or interactive print job in an "interrupt" mode, but passing another user at the machine will always require more convincing reasons. The user can select one of the symbols, and hence one of the printers, and then call up one of the following functions either with a menu in the top bar of the window or with a pop-up menu or the right-hand mouse button: Displaying the waiting print jobs for the printer concerned; in this function automatic and interactive print jobs are displayed separately and they can also be manipulated. This function forms part of the "Job Control" program module and will be described in detail there. This function can also be called up with a double mouse click on the printer symbol. Displaying the properties and status of the printer concerned. Calling up a monitor function which during the work gives information on the display screen concerning the status of the printer concerned. Defining the printer concerned as the default printer. In the above-mentioned function in which the properties and status of the printer are displayed, a window with this information appears on the screen, the information being distributed over three tab cards which can be made visible by selection of their tab, as shown in Figs. 4A, B and C. The stock of printing paper in the printer trays is displayed on a first tab card, the current state of operation of the printer is described on the second tab card and information as to the installed functionality is shown on the third tab card. In response to selection of the above-mentioned monitor function, the workstation screen shows a window in which the user can set his preferences for the form of presentation of the printer status data (see Fig. 5). There are two main forms of presentation, namely with a permanent icon on the screen ("by icon") and with messages which appear on the screen at the time that a change of printer status occurs ("by alerts"). When monitoring with icons is set, the icon displays a symbolic illustration of the status just as shown in Fig. 3. An example of such an icon is given in Fig. 6A. A user can also simultaneously have the status of different printers maintained. In that case, the screen shows an icon for each monitored printer as shown in Fig. 6B. By a double click of the mouse on an icon the function of displaying the waiting print jobs for the printer concerned is called up. In this connection we would again refer to the description of the "Job Control" program module. When monitoring is by means of messages, the user can indicate the changes of state for which he wants to receive a message, in order thus to avoid unnecessary reports. An example of a message of this kind is displayed in Fig. 7. Fig. 8 shows the relevant layout of the workstation screen after the user has selected the "Job Control" option in the desktop software to maintain an overview of current print jobs. Here a number of windows 20A, B and C are displayed, each applicable to a printer at which a print job of the user is present at that time. Thus there are as many windows displayed as there are printers at which the user's print jobs are present at that time. If this function was called up from the "Device Overview" module, then only the window for the printer selected there would be displayed. A window 20 contains a space 21 for automatic print jobs, a space 22 for interactive print jobs of the user, and a space 23 for specifying the active print job. There are also a number of "keys" which can be operated by means of the mouse. Space 21 contains the queue of automatic print jobs of the user, with their status (number in the queue), name, and other data to be selected by the user during set-up. By clicking on a switchbox on the left beneath the space 21 the user can also have displayed all the waiting automatic print jobs, i.e. including those of other users. In that case his own jobs are reproduced in a manner which is distinguishable from the others, for example in colour. If the Job Control module is called up from the "Devices Overview" module, for a specific printer, the presentation of all the waiting automatic print jobs, i.e. including those of other users, is the default setting. Space 22 contains an overview of waiting interactive print jobs of the user, here reproduced with icons with a name, which corresponds to the character of the jobs, which are not in a queue but do not become operative until the user starts them on the operator control panel. To obtain more information concerning these jobs, the user can also have them presented in a detailed list. Space 23 displays the data of the print job which is active at that time, or, if there is no job active, the state of the printer ("idle", "error"). The space contains the following data: type of job (copying job, automatic print job, interactive print job), number of prints, name of the owner of the job, and the name of the job. Next to the space 23 is a key 24, by means of which the active job can be discontinued ("abort"). By means of the key 25, an interactive print job selected in the space 22 can be converted to an automatic print job and be added to the queue in space 21, while the key 26 can convert an automatic print job selected in space 21 into an interactive job and move it to space 22. By means of key 27, the print settings can be displayed for a print job selected in either of the spaces 21 or 22. The same effect is achieved by double clicking of the mouse on the job name. In response to this, a window is opened on the screen of the workstation, displaying all the settings. The settings can also be changed in this window. Finally, a print job selected in either of the spaces 21 or 22 can be removed by means of key 28. The above functions can also be called up by selecting a job and choosing from the "document" menu in the menu bar above the window 20 or by selecting in a pop-menu which appears when the right-hand mouse button is clicked on a job name. The functions explained with reference to the keys 24 - 28 can be used by the user only for his own print jobs. The "View" menu in the menu bar above the window 20 offers the following options: Selection of the form of presentation of automatic print jobs (choice of which information is displayed) Selection of the form of presentation of interactive print jobs (as icons or in a list and, if a list is chosen, what information is displayed) Display of all print jobs of the user (over all the printers), with the printer on which the job is present, plus this information concerning the print jobs that have already been finished. This latter function will now be explained with reference to Fig. 9. When this function is selected, the screen at the workstation displays the window 30. This window 30 contains a space 31 in which there is displayed a list of all the print jobs which have not yet been finished for the user concerned, on all the printers, with their status (waiting, busy, error) and the printer at which they are present. This list shows both automatic and interactive print jobs and their type. Double clicking of the mouse on the name of a print job in space 31 opens the Job Control window (Fig. 8) of the printer where the job is present, so that the user can see the status of the job in the queue (if it is an automatic print job), can manipulate the job, and can inspect and/or change the print settings. The window 30 also contains a space 32 displaying a list of all the finished print jobs of the user concerned, on all the printers, with the printer which processed them. A key 33 is provided beneath the space 32 to enable the user to remove from the list a print job after he has selected this by clicking with the mouse. If a list is too long in space 31 or 32 to fit in that space, a scroll bar appears by means of which the jobs not fitting in the window can still be reached. The list of finished print jobs in space 32 can also give a status indication although this is not shown here. In the case of a printer with more than one delivery tray, the printer machine control system knows the delivery tray in which the prints have been deposited and this information can be displayed in the list. The printer can also be provided with sensors to determine whether there are prints in the delivery trays. In that case, the machine control system can also note that a delivered stack of prints is taken from the tray. This information can also be displayed in the list in space 32. The status information can have the form of: "present in delivery tray X", or "removed". By means of this function a user can always find out where his print jobs are in the queue or where his prints are situated, this being extremely convenient particularly in an environment in which a number of printers are used. The monitor function can also operate for just a specified sub-set of all the printers in the system. This can be set when the system is configured, or by means of a set-up function of the program. The "monitor" menu in the menu bar above the Job Control window 20 offers the opportunity of activating a monitor function for the print jobs of the user concerned on the printer concerned. This function can also be called up from the start menu of the desktop software and will be described hereinafter. The monitor function is intended to keep the user informed as to the status of his automatic print jobs. It can be operative for all the current jobs or for some of the jobs, as selected by the user. The monitor function has three modes: A first mode ("active"): there is still at least one job of the set which has not been completed; also included is the number of jobs that have not yet been finished. A second mode ("passive"): all the jobs of the set have been finished or the set is empty. A third mode ("error"): one of the jobs has caused an error. In response to the selection of the monitor function in the start menu of the desktop software, the workstation display screen displays a window in which the user can select one, more, or all the printers for the monitor function. This is shown in Fig. 10. After the user has clicked the "OK" key with the mouse, the workstation display screen displays a window in which the user can set his preferences for the form of presentation of the status of his personal print jobs (see Fig. 11). There are two main forms of the presentation, namely by means of a permanent icon on the screen ("by icon") or by means of messages which appear on the screen when there is any change in that status ("by alerts"). In the latter case the user can indicate the changes of status for which he wants to receive a message in order thus to avoid unnecessary reports. The user inputs his preferences and presses the "OK" key, whereafter the function is activated. An icon now appears on the screen if the icon mode was selected. When Job Monitoring is activated from Job Control, the selection window of Fig. 10 is skipped (the printer of the Job Control window is automatically selected), but the window of Fig. 11 is immediately displayed. Fig. 12 shows monitor icons. In addition to the name of the printer for which it is active, an icon contains a symbol showing the status of a set of print jobs of the user on that printer. In this example, the following symbols are displayed for the above-mentioned three states: For the first state ("active"): an illustration of a document with a pen; For the second state ("passive"): an illustration of a document; For the third state ("error"): a notice board in front of a document. The said set of print jobs monitored by the monitor function can be the complete set of jobs on the printer concerned, but it can alternatively be a sub-set. This sub-set can only be selected in the Job Control window 20, space 21, by clicking the required print jobs with the mouse, followed by clicking the monitor menu in the menu bar. When Job Monitoring is called up from the start menu of the desktop software, the set always contains all the jobs. The monitor function is dynamic: print jobs can be added to a monitored set. In response to a double click of the mouse on a monitoring icon, the Job Control window of the printer concerned is opened, so that the user can inspect the complete status of his jobs. A plurality of icons can also be displayed simultaneously on the screen, so that the user can inspect the status of different sets or printers simultaneously. If the "by alerts" mode is selected, message windows appear only if there is a user-selected change of status of a print job from the set. An example of such a window is shown in Fig. 13. Although the invention has been described with reference to the above exemplified embodiment, it will be clear to the skilled man that other embodiments are possible within the text of the claims. They are considered to come within the scope of protection of this patent.

Claims: An information-processing system comprising at least one workstation (WS, 100) provided with a processor unit, a screen and operator control means such as a keyboard and mouse, at least one printer (PR, 200) provided with a control unit and an operator control panel, and a digital network (N) to which said at least one workstation (WS) and said at least one printer (PR, 200) are connected, wherein a workstation (WS, 100) is provided with a program (VP) for communication with said at least one printer (PR, 200) for sending print jobs to said at least one printer (PR, 200) and calling up or receiving status information concerning said printer, which program comprises means (UI) for displaying on the workstation screen in the form of a symbolic illustration or icon (11-15) current status information concerning said at least one printer (PR, 200), characterised in that the control unit of said at least one printer (PR, 200) is adapted to execute print jobs in either an autonomous mode or a command-controlled mode, the control unit in the autonomous mode starting the execution of a print job on its own initiative while in the command-controlled mode it starts the execution of a reproduction process, including a print job, in response to a start command from the operator control panel of said at least one printer (PR, 200), and in that the program displays different icons (12, 13) for the cases in which said at least one printer (PR, 200) is active in the said autonomous mode and in which said at least one printer (PR, 200) is active in the said command-controlled mode. A system according to claim 1, wherein a reproduction process in the command-controlled mode is formed by a copying process, in which an original document is scanned by a scanner present in the printer and digital image data are generated, and a print is made using the said digital image data. A system according to claim 1 or 2, wherein a reproduction process in the command-controlled mode is formed by an interactive printing process, in which a print file which has been sent via said digital network (N) and stored in a storage unit in the printer is selected by an operator using the operator control panel and is printed in response to a print command following upon the selection. A system according to claim 1, wherein the icon (13) for the command-controlled mode contains a human figure. A system according to claim 1, wherein the information-processing system comprises a plurality of printers and wherein the program in the workstation simultaneously displays said current status information concerning said plural printers, including said different icons (12, 13). A method of symbolically displaying printer status information of a printer (PR) connected via a digital network (N) to an information-processing system including at least one workstation (WS) provided with a processor unit, a screen and operator control means such as a keyboard and mouse, the printer (PR) being provided with a control unit and an operator control panel, which method comprises displaying on the workstation screen in the form of a symbolic illustration or icon (11-15) current status information concerning the said printer, characterised in that the control unit of the printer (PR) is adapted to execute print jobs in either an autonomous mode or a command-controlled mode, the control unit in the autonomous mode starting the execution of a print job on its own initiative while in the command-controlled mode it starts the execution of a reproduction process, including a print job, in response to a start command from the operator control panel of the printer, and in that the method further comprises displaying different icons (12, 13) for the cases in which the printer (PR) is active in the said autonomous mode and in which the printer is active in the said command-controlled mode. A method according to claim 6, wherein a reproduction process in the command-controlled mode is formed by a copying process, in which an original document is scanned by a scanner present in the printer and digital image data are generated, and a print is made using the said digital image data. A method according to claim 6 or 7, wherein a reproduction process in the command-controlled mode is formed by an interactive printing process, in which a print file which has been sent via said digital network (N) and stored in a storage unit in the printer (PR) is selected by an operator using the operator control panel and is printed in response to a print command following upon the selection. A method according to claim 6, wherein the icon (13) for the command-controlled mode contains a human figure. A method according to claim 6, wherein the information-processing system comprises a plurality of printers and wherein the method comprises simultaneously displaying said current status information concerning said plural printers, including said different icons (12, 13). A computer program comprising code means that when executed on a computer carry out the method of any one of claims 6, 9 and 10. A computer program as claimed in claim 11, stored in a machine-readable carrier.

Inventors: COLLARD RENE FRANCOIS ALBERT, GEELEN JOHANNES FRANCISCUS MAR, ROOSEN MONICA MARIA WILHELMINA, VAN HERWAARDEN JANINE DORETTE, WILBERS THEODOOR JOHANNES MARI, COLLARD, RENE FRANCOIS ALBERT, GEELEN, JOHANNES FRANCISCUS MARIA ELISABETH, ROOSEN, MONICA MARIA WILHELMINA MATHEA, VAN HERWAARDEN, JANINE DORETTE, WILBERS, THEODOOR JOHANNES MARIE, Collard, René François Albert
Applicants: OCE TECH BV, OCE-TECHNOLOGIES B.V.
Application year: 1999
Main classification: G06F3
IPC codes: B41J29, G03G21, G06F3