Kit for multi-configurable control panel design for office equipment

Abstract: A multi-configurable office machine (50), which includes a control panel subassembly (60) having a plurality of user-activated key-switches for controlling functions of the office machine. A first control panel cover (150) is adapted for installation on the control panel subassembly, the first cover comprising a first cover structure providing user access to a first set of the key-switches when the first cover is installed on the control panel subassembly. A second control panel cover (150') is adapted for installation on the control panel subassembly, the second cover comprising a second cover structure providing user access to a second set of the key-switches when the second cover is installed on the control panel subassembly. By installing a selected one of the panel covers, different groups of the key-switches are accessible to the user, thereby configuring the machine to a first configuration or a second configuration.

Description: TECHNICAL FIELD OF THE INVENTION This invention relates to office equipment, and more particularly to a technique for configuring a universally configurable piece of office equipment to a particular product configuration wherein certain features or performance capabilities are added or disabled, by providing a particular control panel cover for each product configuration and a universal control panel assembly. BACKGROUND OF THE INVENTION Office equipment such as printers, scanners, copiers and facsimile machines are in common use. Recently, new types of office equipment have been introduced, which combine functions of various machines into a single piece of equipment. These multi-purpose machines include, for example, the "OfficeJet" series of machines marketed by Hewlett-Packard Company, which includes functions of a printer and a facsimile machine, and as well those functions of a scanner and a copier. This invention will be described in the exemplary context of such multi-purpose machines, although the invention is not limited in application to such machines. Manufacturers of office machines for today's globalized marketplace will typically manufacture one machine for many different countries. The product is then localized for a given country or language requirement. Localization refers to the process of having the product text messages in the local language into which the product is to be sold and ultimately used. Typically the product is built with any messages to be displayed on a product display stored in memory in the various languages. During the localization process, the machine is set up to use the particular language for displayed messages, and to provide the messages in the appropriate language for any text messages appearing on the machine housing including control panels. Thus, for example, the control panel may have a "Start" keycap which needs to be labeled in the appropriate language. A label is placed on the control panel in the appropriate language during the localization process. This of course is time consuming and adds to the cost of production, and would cause a need for a different control panel for each language. Another technique is to provide a snap-on cover for the control panel of the machine, the cover having the requisite language text already included on the cover. Manufacturers of office machines, such as the multi-purpose equipment, can construct a particular type of machine to have a range of performance and operational features or options, i.e. a universal machine, which can be configured as different product models. Configuration refers to the adaptation of the product to add or remove performance and/or features from the universal machine to meet customer needs. In the past, the factory typically made certain quantities of the product having the various options; i.e. the configuration was done at the factory. This has the disadvantage of added inventory for the various product configurations, and added cost in product manufacture, since different product configurations are built, as compared to building only a single universal machine. US-A-4,092,527 describes a calculator with an interchangeable keyset. The calculator comprises an integrated circuit, a display for displaying a number output by the integrated circuit, an array of key switches for inputting numeric and functional data to the integrated circuit, a keyset comprising an array of key switch push buttons moveably disposed in openings in a member retaining the array and a case in which the integrated circuit, display and array of key switches are disposed. The calculator is provided with a plurality of keysets, each keyset having a different configuration of key push buttons for permitting an operator to be able to access either to selected key switches or all key switches depending upon the particular keyset used. The keysets are interchangeable at the point of use of a calculator, and the complete set of keysets are provided with the calculator. It is the object of the present invention to provide a method allowing for a late point configuration of a multi-configurable office machine prior to shipment to an end user. This object is achieved by a method according to claim 1. SUMMARY OF THE INVENTION In accordance with a an optional aspect, the control panel further has one or more indicator light sources for providing one or more indicator functions. The first cover type further includes an opaque structure have one or more regions transparent to light emitted from corresponding light sources. The second cover type includes an opaque structure for blocking light from one or more of the light sources when installed on the control panel. In accordance with another optional aspect of the invention, a multi-configurable office machine is described, which includes a control panel subassembly having a plurality of user-activated key-switches for controlling functions of the office machine. A first control panel cover is adapted for installation on the control panel subassembly, the first cover comprising a first cover structure providing user access to a first set of the key-switches when the first cover is installed on the control panel subassembly. A second control panel cover is adapted for installation on the control panel subassembly, the second cover comprising a second cover structure providing user access to a second set of the key-switches when the second cover is installed on the control panel subassembly. Thus, by installing a selected one of the panel covers, different groups of the key-switches are accessible to the user, thereby configuring the machine to a first configuration or a second configuration. BRIEF DESCRIPTION OF THE DRAWING These and other features and advantages of the present invention will become more apparent from the following detailed description of an exemplary embodiment thereof, as illustrated in the accompanying drawings, in which: FIG. 1 is an isometric view of a multi-purpose office machine showing a first control panel cover in exploded view relative to the control panel subassembly. FIG. 2 is a cross-sectional exploded view of a portion of the control panel cover and the control panel subassembly, taken along line 2-2 of FIG. 1. FIG. 3 is a cross-sectional view of the portion of the control panel cover and the control panel subassembly of FIG. 2, showing the elements snap-fitted into assembled position. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 1. FIG. 5 is a bottom view of a portion of the structure illustrated in FIG. 4. FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 1. FIG. 7 is a bottom view of a portion of the structure illustrated in FIG. 6. FIG. 8 is a top plan view of a first control panel cover for assembly to the control panel subassembly of the machine of FIG. 1. FIG. 9 is a top plan view of a second control panel cover for assembly to the control panel subassembly of the machine of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An exemplary embodiment of the invention is described with reference to configuring a multi-purpose office machine, which includes a control panel subassembly and a control panel cover which snap fits onto the subassembly. The control panel subassembly includes various key-switch controls and light indicators. The key-switch controls allow the user to control various functions of the machine, and input commands and data. The light indicators convey information to the user, such as status of various functions and warning/error indications. The configuration process typically requires that a second product configured from the generic product and with a lesser number of features have less access to key-switch controls and light indicators than a first product with a greater number of features. In the past, the solution was for the factory to make certain quantities of product having the various options, i.e. the configuration was done in the factory, and this required having a different control panel assembly for each type of product. In accordance with the invention, the generic or universal machine is constructed with a generic control panel subassembly, which has all the keycaps and light-pipe circuitry and electronics needed for all configurations of all products. Configuration is achieved by installing a custom control panel cover for a particular configuration onto the generic control panel assembly. If a particular key-switch or light-pipe is not needed for a particular configuration, then the custom cover does not provide a keycap for the key-switch or light-pipe for the light source, but instead covers it over. By having keycaps and light-pipes snap into the custom cover, or alternatively into the generic control panel subassembly, late point configuration is made possible. Also, by having one generic control panel assembly which is used on multiple products, production volume for the generic panel assembly is increased, and cost is therefore reduced. At the same time, the need to design control panel subassemblies for the various product options is eliminated. Moreover, configuration can be accomplished after factory assembly of the machine, e.g. after shipment to a distribution center location or retail establishment. FIG. 1 is an isometric view of an exemplary multi-function office machine 50. This machine in a generic platform provides scanning, printing, copying and faxing functions. A document feed guide 52 is provided at the top rear side of the machine, for feeding documents to be scanned or faxed. An input paper/media tray 54 is provided at the lower front side of the machine. An output tray is provided by pull-out wire loop 56, to receive output from the machine. The functions of the machine are controlled by the control panel subassembly 60 which includes a circuit board (not visible in FIG. 1) which carries machine controllers such as a microprocessor, memory and the like. The control panel subassembly 60 includes a top housing structure 62 which cooperates with the circuit board to provide structural support and protection for the various key-switches, display and light indicators which are electrically and mechanically coupled to the circuit board. Thus, for example, the subassembly 60 includes an LCD panel 64 which displays information to the user. Keycap array 68 includes exemplary keycap 68A and is a telephone-type keypad allowing the user to enter information and to dial telephone numbers for the faxing function. The functions of the other key-switches/keycaps and indicator lights are as follows, for this exemplary embodiment. 70 Speed Dialing, One-touch key-switches 72 Indicator light - warning/error light 74 Indicator light - Telephone line hookup 76 Menu function keycaps 78 Right keycap 80 Left keycap 82 Enter 84 Lighter/darker 86 Power keycap (on/off) 87 Indicator light - power on 88 Speed Dial (facsimile function) 90 Auto answer (facsimile function) 92 Indicator light - auto answer active 94 Copy quality (photocopy function) 96 Reduce/enlarge (photocopy function) 98 Redial/pause (facsimile function) 100 Color resolution (facsimile function) 102 Color copy (photocopy function) 104 Start 106 Scan 108 Black copy The machine 50 further includes a control panel cover 150 for assembly to the control panel 60. The control panel cover 150 snap fits onto the control panel, as illustrated in FIGS. 2 and 3. Here, one edge fastener 152 of the cover 150 is shown, which is received in a corresponding receptor 110 of the control panel 60. The fastener includes four barbed tabs arranged concentrically about a center axis, including tabs 152A, 152B and 152C, formed integrally with the cover 150, e.g. from injection molded plastic. The diameter of the fastener 152 is slightly larger than the opening 110A, which is defined by chamfered walls 110B. As the cover is pushed onto the control panel, the fastener 152 comes into contact with the chamfered wall, and the barbed ends of the tabs (e.g. tabs 152A-152C) are compressed, bending inwardly, allowing insertion of the fastener into the opening 110A. The underside of the chamfered wall 110B forms a shoulder 110C against which the barbed ends expand and abut against, as shown in FIG. 3, holding the cover in place. A protruding tab 152D controls the depth of insertion of the fastener 152 into the receptor 110, and its length cooperates with the length of the tabs 152A, 152B to securely hold the cover in place. Seven of the fasteners 152 are employed in this embodiment, at the corners and other locations of the cover, and engage with corresponding receptors in the control panel assembly 60. In accordance with an aspect of the invention, different panel covers are provided to configure the machine 50 to different configurations. In this exemplary embodiment, the user-activated functions are selected by activation of membrane switches comprising the control panel subassembly 60. Of course, the invention is not limited to use of membrane switches as a make-break circuitry, and other circuitry could alternatively be employed. The user-activated make-break circuits are referred to herein as "key-switches." In this exemplary embodiment, the user actuates the key-switches through keycaps, the keycaps being pressed by the user to apply force to the underlying membrane key-switch on the control panel subassembly. It is noted that some of the keycaps reside with the control panel assembly 60 and protrude above the surface of the structure 62 by a sufficient distance to extend through corresponding openings formed in the panel cover 150, to be accessible for manual activation by the machine user. Examples of this type of keycap include the keycap 68A, the power keycap 86 and the start keycap 104. Other keycaps reside with the cover. Examples of this type include the one touch speed dial keycaps comprising array 200 (FIG. 8) which contact the key-switch array 70, the copy quality reduce/enlarge keycap 156 (FIG. 8) which contacts key-switch 96, and the scan keycap 202 (FIG. 8) which contacts key-switch 106. Alternatively, for a different control panel embodiment, keycaps for a selected group or set of the key-switches can be omitted from the panel cover, so that the corresponding key-switches on the subassembly 60 are not accessible to the machine user with the panel cover in place. FIGS. 4 and 5 illustrate one exemplary technique for holding keycaps in the panel cover 150 to provide a cover-mounted means to actuate the membrane key-switch on the control panel subassembly 60. FIG. 4 shows the two key-switches 94 and 96 mounted in the control panel 60. Corresponding keycaps 154, 156 are supported by the cover 150 for movement to engage the key-switches 94, 96. While movement is permitted to engage the key-switches, the keycaps are constrained by mounting structures from becoming disassembled from the cover. The keycaps 154, 156 protrude through respective openings 158, 160 in the cover 150, with side walls 162, 164 defining the openings. In this exemplary embodiment, the side walls 162, 164 have a slight taper, as do the keycaps 154, 156. Integrally formed with the keycaps into a keycap array 170 are living hinges 154A, 156A, which extend between the keycaps and a frame portion 172 of the structure 170. The array 170 can be formed from a plastic material through injection molding processes. The keycaps 154, 156 are respectively formed of crossed ribs structures 154B, 154C and 156B, 156C (FIG. 5). The array 170 is aligned to the underside of the cover 150 by attachment pins 180A, 182A extending from bosses 180, 182, and by fastener 184 protruding from the undersurface of the cover and engaging receptacle 186 of the keycap array 170. The living hinges such as hinges 154A, 156A allow the keycaps to be depressed downwardly into engagement with the key-switches 94, 96. One or more of the indicator lights such as 72 or 87 are visible in the panel cover 150 through a corresponding opening. For an alternate panel cover for a different configuration, the cover opening for one or more of these indicator lights can be omitted, so that the indicator light is covered over and not visible to the machine user. FIGS. 6 and 7 illustrate a light pipe arrangement for conducting light emitted from a light source such as an LED mounted on the control panel through an opening formed in the cover. Here a light pipe structure 190 is attached to the cover by a barbed tab 194 protruding from the underside of the cover, and the light pipe has a tip extending into hole 192 formed in the cover. The indicator light 92 generates light energy which is passed into the light pipe and through the cover hole, and is visible to a user. The light pipe structure 190 can be fabricated of a transparent plastic material. The attachment of the light pipe structure 190 to the cover 150 is by a snap fit. FIG. 8 is a top plan view of the control panel cover 150 in the condition when it is not assembled to the machine 50. This particular cover is adapted for a first machine configuration, wherein all the key-switches and indicator lights on the control panel assembly are available to the user once the cover is attached to the control panel assembly. Thus, in this example, the cover carries a speed dial keycap array 200, which enables the user to actuate the speed dial key-switches 70 on the control panel assembly, as well as the keycaps 154, 156 described above, and keycap 202. The keycap 202 is for making contact with the key-switch 106 on the control panel subassembly. Thus, the cover 150 configures the machine 50 to a configuration in which a first set of user-accessible function key/switches and light indicators available on the control panel 60 are fully functional after assembling the cover onto the control panel assembly. In this example, the first set provides a configuration of full functionality of all user-accessible machine functions. FIG. 9 illustrates an exemplary second control panel cover 150' which is adapted for a second machine configuration. This cover is fabricated without the keycap array 200, and without corresponding openings formed in the cover. Similarly, the cover 150' is fabricated without openings for the keycaps 154, 156 and 202 of the cover 150. Further, the alternative cover can omit a light indicator function by not providing an opening through which light from an indicator light is passed to the user. For example, the second cover 150' can omit the light indicator opening for indicator light 92 as well as the light pipe structure 190 of the cover 150, so that light from light source 92 is not visible to the user once the cover is installed, even though the light source can be fully functional. Thus, the cover 150' configures the machine 50 to a second configuration wherein a second set of switches is available to the user, and the functions provided by key-switches 94, 96, 106, as well as speed dial key-switches 70 are not available to the user. The foregoing first and second cover embodiments are exemplary as to the number and functions of the key, switch or indicator light functions which can be omitted from a particular configuration. In addition, particular embodiments can employ three or more different covers, all for assembly to a common control panel, for providing the capability of providing three or more different product configurations. In an exemplary embodiment, the respective panel covers 150, 150' are fabricated of a thermoplastic material using an injection molding process. Of course, other fabrication techniques could alternatively be employed. In some embodiments, the configuration process can be enhanced by some type of electronic part configuration, wherein the particular machine is programmed electronically to a particular configuration and certain functions are disabled from operation for a given configuration. This electronic configurability can disable certain function, e.g. disable from operation a switch function or an indicator light. In addition to such electronic configurability, a control panel cover selection will also be used in accordance with the invention to provide late point configuration of the generic machine. It is understood that the above-described embodiments are merely illustrative of the possible specific embodiments which may represent principles of the present invention. Other arrangements may readily be devised in accordance with these principles by those skilled in the art without departing from the scope of the claims.

Claims: A method for late point configuration of a multi-configurable office machine (50) to one particular configuration of a plurality of possible machine confguration types, the office machine (50) having a functionality comprising scanning, printing, copying and faxing, the method comprising the following steps: providing the multi-configurable office machine (50) having a control panel (60) with a plurality of user-activated key-switches for controlling functions of the office machine; providing a plurality of covers (150, 150')of different types for assembly to the control panel, wherein a cover (150) of a first type provides user access to a first set of said key-switches when the cover of the first type is installed on the control panel, and a cover (150') of a second type provides user access to a second set of said key-switches when the cover of the second type is installed on the control panel; selecting only one of said plurality of covers for configuring the machine to the particular configuration having functions provided by a corresponding set of said key-switches; and installing said selected cover on said control panel to configure the machine to said particular configuration at a distribution location or a retail establishment location. The method according to claim 1, wherein the step of installing said selected cover includes engaging a plurality of fasteners (152) fabricated integrally with said cover with a corresponding plurality of fastener receptacles (110) on said control panel. The method according to claim 1 or 2, wherein the step of providing the multi-configurable office machine includes: assembling the office machine at a factory location, wherein fabrication of the office machine is essentially completed except for installation of said cover on said control panel; and shipping the assembled office machine from said factory location to said distribution location or said retail establishment location. The method according to claims 1 to 3, wherein the step of providing a plurality of types of cover includes: providing the cover (150) of the first type carrying at least one keycap (154), said at least one keycap for engaging a corresponding one of the key-switches on the control panel when installed on the control panel; providing the cover (150') of the second type without at least one keycap corresponding to said at least one keycap (154) of said cover of the first type, wherein the corresponding key-switch on the control panel is not accessible to the user when the cover of the second type is installed on the control panel.

Inventors: ARTERBERRY JOHN H, CAPUTO DAN SCOTT, O'BRIEN PAUL M, ARTERBERRY, JOHN H., CAPUTO, DAN SCOTT, O'BRIEN, PAUL M.
Applicants: HEWLETT PACKARD CO, HEWLETT-PACKARD COMPANY
Application year: 2000
Main classification: H01H13
IPC codes: H01H13