Self-inking marking device having ink roller on swingarm assembly and pivotable die plate

A self-inking marking device having adjustable print bands configured to be adjustable by a single adjustment knob, with a readily viewable display for viewing the current status of the print interface. In an embodiment, a self-inking marking device generally includes a display interface, an upper body, a lower body, adjustment components, and printing components. The printing components include components to affect a unique self-inking method that utilizes an ink roller that inks the die while rolling along the surface of the die plate.

TECHNICAL FIELD

The invention relates generally to marking devices, including, for example, hand stamps, and more particularly, to self-inking marking devices with adjustable print bands.

BACKGROUND

Marking devices that imprint information from a die onto a sheet of paper or other receiving surface have been used in the art for some time. Marking devices of the prior art, for example, traditional hand stamps, originally required a user to depress the die into an ink source, where ink would be deposited onto the die, and subsequently required the user to depress the inked die onto the receiving surface. More recently, self-inking stamps utilizing a spring force and an internally-incorporated ink source have been devised. However, marking devices of the prior art suffer from a myriad of problems, especially in the context of marking devices incorporating adjustable daters or other adjustable print heads.

Marking devices incorporating adjustable print heads are most commonly used to imprint the date or other timestamp-type data. Daters of the prior art thus typically utilize bands or loops of numbers having an ink-receivable surface that is configured to be rotatable or pivotable along the print interface in order to change the value of the stamped data, wherein the print interface is the area of the die or other imprinting structure designed to contact ink and subsequently, the receiving surface in order to create an imprint or stamp on the receiving surface. For example, a first band containing the number values of 0 through 9 in combination with a second band containing the number values 0 through 9 can be configured to represent a two-digit number and therefore, can represent the days in a month. Month names and/or years can also be incorporated adjacent the numerical day value using a similar combination of print bands. Other bands are also often utilized in combination with date bands. For example, in the package delivery or shipping context, a band having the statuses of “Received,” “Shipped,” “In Process,” and “Pending,” etc. are also available and can be rotated between in order to give context to a date being stamped. Similarly, in the accounting context, statuses such as “Faxed,” “Received,” and “Paid,” etc. are likewise available. In order to adjust the print bands in daters of the prior art, a user is often required to manually rotate tiny wheels that in turn affect rotation on the date bands. This is often difficult and tedious, as the wheels are generally smaller than is comfortable to the interface of the average human finger. These wheels can often be located within a recessed housing, thus increasing the difficulty of adjustment. Additionally, a separate wheel is often linked to every adjustable band. As a result, rotation of separate wheels is typically required in order to adjust every changeable field. These wheels are often placed close together, further complicating the band adjustment process.

The user experience in daters of the prior art is further worsened by the lack of visibility into what is currently set at the print interface. As an initial matter, the adjustment wheels described above are often unlabeled. As a result, the user is often required to resort to trial and error or a recursive process of adjusting a wheel and examining the print interface in order to see which bands are being adjusted to what setting. Typically, this requires the user to invert the dater, adjust a wheel or series of wheels, while examining the print interface, which is backwards as read by the user to determine which value has been adjusted or needs further adjustment. Alternatively, this could require the user to make an impression of the current setting to ensure the correct setting has been established.

Further, on self-inking daters, a die plate is typically pivoted from a retracted, hidden from the user, inking position within the body of the dater to a forward, printing position at a distal position from the ink source. As a result, in order to see the print interface, the user must invert the dater, cause the die plate to rotate from the ink source (often by pressing the handle with one hand and stabilizing the body with the other or by pressing the handle against a flat surface), and then view the actual raised characters that are in the printing position. Additionally, the user often attempts to adjust the print bands while the dater is under this springing force, which requires two hands and specific pressure on the dater, while achieving the necessary hand-eye coordination to achieve the required results or setting. Clearly, the above described processes of inverting the dater in order to view the print interface and/or partially or fully projecting the die plate from the ink source on self-inking daters of the prior art, often while trying to adjust the print bands, combined with the forced backwards reading of the print interface are wildly inefficient.

Alternatively, a locking feature is occasionally incorporated into daters of the prior art. With such locking features, the dater can be depressed and subsequently locked with the print interface in the inverted position, thereby allowing the user to temporarily relieve the constant springing force required of the user to project the print interface. However, activating this locking feature necessarily requires an extra step when adjusting the print interface. In addition, because the user must closely examine or inspect the print interface on traditional daters in order to learn of the current position of the print bands, the risk of the user inadvertently getting ink on his fingers, clothes, or other surrounding materials is greatly increased. This problem is exacerbated in self-inking daters of the prior art where the user must press on the handle with one hand and stabilize the body with the other hand in order to rotate the die plate from the ink source (and near the user's stabilizing hand at the printing end), or activate a locking feature that keeps the die plate in the projected position. This problem is further exacerbated in daters of the prior art where adjustment wheels are located within a recessed body near the ink source.

An additional category of marking devices having adjustable print interfaces are so-called numberers. In numberers, adjustable print bands are used to apply identification numbers or numeric codes, often for product identification or packaging purposes. Numberers of the prior art typically suffer from the same problems as described above with respect to daters.

Therefore, there is a need for a self-inking marking device having adjustable print bands that allows for the efficient adjustment of print band settings and further easily allows the user to view the current print band settings.

SUMMARY OF THE INVENTION

Embodiments of the present application substantially meet the aforementioned needs of the industry. Embodiments provide a self-inking marking device having adjustable print bands that are configured to be adjustable by a single adjustment knob, with a readily viewable display for viewing the current status of the print interface, wherein the print interface is the area of the die or print band designed to contact ink and subsequently, the receiving surface in order to create an imprint or stamp on the receiving surface. The terms “marking” and “printing” are used interchangeably throughout this specification.

In an embodiment, the self-inking marking device comprises print bands that correspond to a month, day, and year, respectively. In other embodiments, other status bands are also incorporated, such as “Received,” “Shipped,” “In Process,” “Pending,” “Faxed,” and “Paid,” etc. In still other embodiments, print bands can be adjusted to spell out these statuses. In embodiments, an individual print band can have a plurality of printing options; for example, up to 14. Other embodiments having additional or fewer printing options are also considered, and can depend on the particular marking device application, in embodiments. In embodiments, the number of print bands is based on the choice of a particular user or manufacturer as to the size and intended use of the product, thus creating a limitless number of print band quantities and configurations.

In another embodiment, print bands can comprise individual faces having static graphics, text or alphanumeric characters, punctuation, logos, protrusions, seals, symbols, patterns, or combinations thereof. Further, embodiments can comprise “spaces” where no letter or symbol is present at a particular location of a print band. Instead, a flat area is positioned such that no impression is left on the receiving surface, resulting in a gap or spacing on the receiving surface due to the flat area never contacting the ink source during inking, thus depicting a space on the receiving surface.

In another embodiment, a traditional non-self inking marking device is provided. In embodiments, the self-inking mechanisms of this marking device are absent or, alternatively, are present but configured inactive, and thus allow a user to depress the print interface into a separate ink source, where ink is deposited onto the print interface, and subsequently allows the user to depress the inked print interface onto the receiving surface.

In another embodiment, a numberer device is provided. In embodiments, the print bands of this marking device are configured to have indicia that can represent identification numbers or numeric codes for product identification or packaging purposes. In embodiments, multiple print bands are provided in order to imprint multiple pieces of numbered data. In another embodiment, a so-called “heavy duty” marking device is provided. In embodiments, this marking device optionally comprises a handle that extends upwards from a top surface of the marking device. The handle is configured to be operably coupleable with the hand of the user. Optionally, in embodiments, all or portions of the body are open. For example, front and back walls are removed from marking devices having four sidewalls such that only the two remaining sidewalls provide the body of the heavy duty marking device. By removing the front and back wall material, cost and weight savings can be recognized. In embodiments, the two remaining sidewalls can be reinforced with steel.

The terms “marking device,” “dater,” and “stamp” are used herein interchangeably, with the understanding that all reflect devices that can have adjustable printing values. Further, for ease of discussion, embodiments are generally discussed herein with respect to adjustable date values. However, the invention is in no way limited to dates; on the contrary, embodiments described herein may be applied to any marking device where an adjustable print interface is desirable. In a feature and advantage of embodiments of the invention, a self-inking marking device comprises display interface viewable from a top surface or a side surface of the marking device that readily displays the current status of the print interface clearly and accurately. As a result, trial and error wheel adjustment or iterative process of wheel adjustment and readjustment is minimized or eliminated. The user is likewise not forced to read the print interface upside down in order to discern the adjusted values. Referring to the problem of self-inking daters of the prior art, inversion of the dater and partially or fully projecting the die plate(s) from the ink source in order to view the actual raised characters that are in the printing position is unnecessary. Further, because the ink-receiving print interface can remain on the work surface or within the body of the device, in embodiments, the risk of the user inadvertently getting ink on his fingers, clothes, or other surrounding materials is minimized or eliminated as a result of the process of setting the values to be stamped. Further, referring to daters of the prior art where adjustment wheels are located within a recessed body near the ink source, placement of the user's fingers in close proximity to the ink source is unnecessary. In embodiments, the display viewable from the top or side of the device is angled toward the user for easy viewing. The user may remain comfortably seated without straining to see on the set values that will be impressed onto the receiving surface. In another embodiment, the current setting or status of the print interface is displayed at a location on a side of the marking device body. For example, if a particular marking device has a lengthy imprint and therefore an elongated body, it may be more convenient to have the display on a side of the body rather than the top. Additionally, in embodiments, the marking device can have changeable display cards for placement within the display interface and proximate the current status of the print interface that correspond to the various dies that may supplement the adjustable print values so that a fully accurate depiction of the print interface can be provided. For example, a display card displaying “FAXED” can be inserted in the display interface when the corresponding “FAXED” die is being used at the print interface.

In another feature and advantage of embodiments of the invention, a single adjustment knob projecting from the body of the marking device allows the user to not only easily adjust individual print bands, but to also move between print bands. In embodiments, the adjustment knob has enough bulk to provide a readily graspable interface for the user. In operation, the adjustment knob can be positioned between the user's thumb and forefinger or thumb and middle finger for easy rotation or transverse adjustment. The adjustment knob can have raised gripping projections that provide additional enhanced interfaces for the user when rotation or transverse adjustment is desired, in embodiments. In operation, in an embodiment, the adjustment knob can be moved transverse to the marking device body, and likewise transverse to the print bands, which are positioned in a loop parallel to the length of the marking device body, to select the desired print band for adjustment. When the desired print band is selected, the adjustment knob can then be rotated, which in turn causes that particular print band to be rotated. The print band is rotated in this way until the desired setting is obtained. The adjustment knob can then be again moved transverse to the marking device body and print bands to select another print band for adjustment. Likewise, the adjustment knob can then again be rotated, which in turn causes the newly-chosen print band to be rotated. Therefore, no manual rotation of numerous individual tiny adjustment wheels is required in order to adjust the print interface.

In another feature and advantage of embodiments of the invention, the marking device can comprise a plurality of adjustable lines of print and therefore, a plurality of adjustment knobs. For example, in an embodiment, a marking device includes a first line of adjustable print that corresponds to a first set of print bands having indicia representing a numeric code or phrase, and further includes a second line of adjustable print corresponding to a second set of print bands, such as a date. In this embodiment, a first adjustment knob corresponds to the first set of print bands and a second adjustment knob corresponds to the second set of print bands. Therefore, a first code or phrase can be adjusted by the first adjustment knob interface to the first set of print bands and a secondary date can be adjusted by the second adjustment knob interface to the second set of print bands. In embodiments, additional lines of print and print band sets and corresponding adjustment knobs are provided. In another feature and advantage of embodiments of the invention, as the adjustment knob moves from print band to print band, a tactile indication and/or visual indication of the selected band displayed in the display interface aids the user in identifying the currently-selected band. In an embodiment, the interface between the bands as traveled by the adjustment knob has variated haptic detents for signaling the particular bands. A series of detents to mechanically arrest the motion of the adjustment knob signal to the user, based on the particular arresting force of the particular detent of a particular band, on what band the adjustment knob is currently selected. In an embodiment, a series of detents span from most arresting to least arresting, thus reflecting months, days, then years to the user when adjusting between the bands. In another embodiment, detents require the most force to adjust from days, the easiest force to adjust to years, and an intermediate force to adjust to months. In another embodiment, detents require the most force to adjust to days, and intermediate equivalent forces to adjust to months and years. Typically, it is desirable to have detents require the most force to move from days because it is the most frequently adjusted value. The user is able to feel the variated detents and associated variated arresting force through the adjustment knob interface. In another embodiment, the display interface shows the position of the adjustment knob through highlighting of the adjustable values on the display interface. In an embodiment, a mechanical ring encircles the currently-selected band. In another embodiment, the currently-selected band is slightly elevated from the non-selected bands. Various other appropriate visual indicators are also considered. The above-described tactile or visual indications of the band position of the adjustment knob can be used in combination or alone, in embodiments.

In another feature and advantage of embodiments of the invention, a display card storage area is provided within the body of the marking device. As described above, where changeable display cards that correspond to the various dies are utilized to accurately depict the print interface, the non-used cards can be stored in a single location within the marking device itself in the display card storage area until they are used (when the corresponding die is used). As a result, no display cards are in danger of being lost, and there is no need for the user to try and find cards associated with the marking device somewhere else in the office, as the non-used cards are kept inside the marking device.

Therefore, because of the top display that readily displays the current status of the print interface, the single adjustment knob with associated variated haptic detents between print bands and/or visual indication of the selected band, and the display card storage, the user interface is greatly improved over daters of the prior art.

In an embodiment, a single print band comprises a “print side” that is configured to be inked and to subsequently print on the receiving surface, as well as a corresponding opposite “read side” that is configured to display the opposing print side value. Therefore, each print band has a print side and a read side connected in the band loop. Problems arise in adjustable band devices when the print side values are over-rotated into the display area, or likewise when read side values are over-rotated into the print area. Ink residue from previous inkings can damage or even destroy the display interface, often making the display unreadable. Therefore, it is desirable to have the read side values remain free of ink and positioned only at the display interface, and likewise for the print side values to remain out of the display interface. In another feature and advantage of embodiments of the invention, a hard stop is created within each band at the read-side-print-side interface point(s). The hard stop inhibits rotation of the band such that there is no possibility of over-rotating the read side into the print side or the print side into the read side. As a result, the display interface is preserved and kept ink-free.

In embodiments, the read side of a print band has contrasting colors for the values and background; for example black characters on a white background. In embodiments, the read side characters can be grouped together in a block opposite the print side characters, as described above. In another embodiment, read side characters and print side characters are mixed throughout the band, thus alternating along the loop. Myriad other configurations of print side characters and read side characters are considered.

Because of the aforementioned embodiment having print bands with a “read side” portion of the band opposite a “print side” portion of the band, the overall height of the dater can become quite tall with self-inking methods of the prior art. A dater having excessive height is often unwieldy and unstable as it is easily knocked over when in a neutral upright position, and further becomes difficult for the user to operate. Embodiments therefore provide a unique self-inking method that utilizes an ink roller that inks the die while rolling along the surface of the die plate. In embodiments, the ink roller is more compact than the ink pad of self-inking daters of the prior art. In alternative embodiments, a similarly compact ink pad can be utilized instead of an ink roller. Thus, storage advantages are realized as the ink source requires little volume within the body of the marking device. As a result, the overall height of the marking device is kept at a height that is practical and efficient, as well as user-friendly.

In another issue with lengthy print bands, the rotational path with a rotational band is fairly wide. As a result, a clearance for the band to rotate around must be designed into the body. Embodiments therefore provide a compact body that does not require a rotational path of the print interface while still allowing for the rotational path of the incorporated print bands.

When compared to self-inking daters of the prior art in which the date bands themselves actually move or rotate to engage the ink source and subsequently the receiving surface, embodiments of the present invention provide an ink-applying mechanism that moves, while the date bands or printing interface remains fixed.

In an embodiment, a retracting sheath encloses the rolling ink cartridge. In an embodiment, the protective sheath provides a protective shield over a portion of the ink cartridge, including but not limited to 40%-60% of the ink cartridge, that is exposed to the user at the bottom of the marking device. In an embodiment, when the marking device is in a neutral, non-printing position, the sheath closes and seals off the cartridge to prevent inadvertent access. In another embodiment, when the marking device is in a roller-changing position having a swingarm actuated outward, the sheath is in a closed position. Subsequently, when the roller is snapped into place within the swingarm, the motion of the placement or snapping into place opens the sheath. In operation, when the ink cartridge is moved via a swingarm to affect inking, the sheath is moved underneath the protective shield portion to allow inking of the die plate. Therefore, in another feature and advantage of embodiments of the invention, the user is protected from the risk of getting ink on his fingers, clothes, or other surrounding materials by the retracting sheath.

In an embodiment, a locking mechanism is provided that allows access to the ink roller or ink source in order to more easily change the ink source. In an embodiment, the locking mechanism secures the upper body in a depressed position such that the swingarm is actuated outward as it would be during inking and stamping. In another embodiment, the locking mechanism secures the swingarm itself when it is manually actuated outward by the user so that the upper body can remain in its extended neutral position.

In another embodiment of the invention, a die plate is pivotably mounted to a central support structure or date housing of the marking device. The die plate is mounted such that it pivots about a single pivot axis as the swing arm and ink roller pass over the die plate and print band(s) during a single actuation or stroke of the self-marking device. This allows for sufficient clearance of the swing arm from the die plate even after multiple uses so that smooth and easy actuation of the device is not inhibited.

In yet another embodiment of the invention, the ink roller assembly includes a swing arm similar to other embodiments and pivotably mounted on a lower housing of the self-marking device, an ink roller rotatably carried on the swing arm, and bearings on each end of the ink roller. An outer circumference of each bearing is configured to roll along a hard surface of the die plate so as to maintain the ink roller at a fixed distance from the die place creating a fixed amount of compression for the ink roller. Over-inking of the die plate and/or print band(s) is thereby reduced or avoided altogether.

In yet another embodiment of the invention, a die plate is height adjustable relative to the device so that customized dies formed on the die plate available from various manufactures can be utilized with the print bands. The height adjustability of the die plate allows the customized die characters or graphics to lie substantially flush with the die characters or graphics of the print bands to accommodate for potential variability of die heights due to differences in manufacturing processes for creating dies. A die plate is coupled to a die plate base via a plurality of adjustment cams. The adjustment cams are eccentric or oblong in cross-section such that as the cam is rotated, the die plate moves linearly, i.e. either up or down, relative to the die plate base and the print bands.

The above summary of the invention is not intended to describe each illustrated embodiment or every implementation of the present invention. The figures and the detailed description that follow more particularly exemplify these embodiments.

DETAILED DESCRIPTION

Referring generally toFIGS. 1-5, a self-inking marking or stamping device100according to an embodiment is depicted. Marking device100generally includes display interface102, upper body104, lower body106, adjustment components108, and printing components110.

Display interface102comprises a month display112, day display114, year display116, and optionally, a fixed or interchangeable display card118. Month display112reflects the month value of the print band of months that is currently in the printing position. For example, in the embodiment depicted byFIGS. 1-5, month display112is “NOV” for November. Similarly, day display114reflects the day value of the print band(s) of days that is currently in the printing position. For example, in the embodiment depicted byFIGS. 1-5, day display114is “28,” reflecting the 28thday of the month. Likewise, year display116reflects the year value of the print band(s) of years that is currently in the printing position. For example, in the embodiment depicted byFIGS. 1-5, year display116is “2011” for the year 2011. It is understood that any of the alphanumeric values can have one or more bands that reflect discrete portions of a particular printing value, as will be described in detail below. For example, in an embodiment, referring to day display114, a single print band can be utilized for values 1-31 of the possible numerical value of days. In another embodiment, a first print band is utilized for the ones value of a two-digit day, and a second print band is utilized for the tens value of the two-digit day. In embodiments, display values other than month, day, and year, corresponding to other print interfaces can be made up of one or more print bands. Further, each print band can comprise one or more alpha and/or numeric values, symbols, indicia, etc. Embodiments are not limited by the number of print bands or individual faces or indicia on the bands.

Month display112, day display114, and year display116can comprise display windows for revealing raised printed lettering, such as a rubber, foam, metallic, or other material suitable for such use. In embodiments, contrasting colors between the values and background can be utilized; for example black characters on a white background. Any combination of contrasts to distinguish values from their respective print band backgrounds are contemplated herein.

Display card118is positioned proximate month display112, day display114, and year display116to create an accurate depiction of the print interface when a detailed die is used to supplement the printed date. For example, in the embodiment depicted byFIGS. 1-5, display card shows “FAXED” to reflect the corresponding FAXED die currently in the printing position. In another embodiment, display card118can be blank, when no corresponding detailed die is used. In another embodiment, display card118can be fixed within display interface102such that it cannot be changed by the user.

In an embodiment, as depicted inFIGS. 1-5, display interface102is positioned at the top of marking device100and angled toward the user. Other display interface102positions and angles are also considered, such as on the side or back of a marking device, and at a steeper or less inclined angle, in embodiments.

Upper body104and lower body106comprise the walls that house the majority of adjustment components108and printing components110, as well as provide the body of marking device100. Upper body104comprises four walls and a face joined at the edges of the four walls, where a front wall and a back wall are parallel to each other, and a first sidewall and a second sidewall are parallel to each other such that the front wall is orthogonal to and joined to the two sidewalls and likewise, the back wall is orthogonal to and joined to the two sidewalls. The face encloses the space created by the four walls to create an enclosed area. In an embodiment, one end of upper body104that comprises the enclosing face can be rounded and angled to correspond to the angle of display interface102. A second end can therefore be open to the interface to lower body106so that upper body104is slidably coupled to lower body106. The body of upper body104between the first end and second end therefore comprise the length and further define the enclosed space. In embodiments, as shown inFIGS. 1-5, the second end can be angled at an angle similar to that of display interface102and the first end to create a more stylish-looking appearance. Optionally, the closed end of upper body104can be removable or hinged to the wall of upper body104so that access to display card storage148and display interface102is provided.

Lower body106comprises four walls with two open ends. A first end is located proximate upper body104such that the second end of upper body104overlaps portions of the first end of lower body106. In an embodiment, the interior dimensions of upper body104are shaped just larger than the outside dimensions of lower body106such that each of the respective inner sides of upper body104make flush contact with a respective outer side of lower body106. In another embodiment, a gap exists between the overlapping portions of upper body104and lower body106such that they are not in flush contact with each other. In other embodiments, contact is limited to certain raised portions of upper body104or certain raised portions of lower body106that establishes contact points or channels of movement. Optionally, lower body106comprises paths that direct the movement of upper body104. A second end of lower body106is located distal upper body104to provide a printing area for marking device100. The second end of lower body106is substantially transverse to the walls of upper body104and lower body106to create a flat surface to rest marking device100as well as to facilitate printing. Therefore, an open void within the body of upper body104and lower body106is created to house all or portions of adjustment components108and printing components110within marking device100. Specifically, the space between the first end of upper body104and the second end of lower body106is configured to house all or portions of the aforementioned components. Lower body106further comprises, in embodiments, a roller access opening located within one of the walls of lower body106. The roller access opening is configured to allow the roller to swing outside of the plane of the wall containing the roller access opening. Optionally, the void created by roller access opening can have a hinged cover.

In embodiments, upper body104and lower body106can comprise any number of shapes, configurations, or combinations of shapes. For example, two open-ended cylinders can comprise the body of marking device100. Additionally, upper body104and lower body106can comprise only two walls respectively—a front wall and a backwall or two sidewalls, in embodiments, as desired. Further, upper body104and lower body106need not be symmetrical. Embodiments described herein are for illustration only and are in no way limiting.

Upper body104and lower body106are made of lightweight, translucent, opaque, or transparent plastic material, as depicted inFIGS. 1-5in an embodiment, but can also comprise metal, composite, or any other appropriate material. For example, in industrial settings, sufficiently durable materials, such as reinforced steel, will be desirable when compared to the materials required in a typical office setting.

Referring toFIG. 6, adjustment components108comprises one or more date or print bands120, upper roller or idler122, lower roller or idler124, date band buffer126, and adjustment knob128, in an embodiment.

Print band120comprises a loop of characters or values of individual print faces for printing and displaying. As shown, individual characters are linked together in a chain for rotation therethrough. In an embodiment, individual characters comprise raised printed lettering, made of, for example, a rubberized stamping material known in the industry. In embodiments, an individual print band120comprises a “print side” configured to be inked and to subsequently print on a receiving surface, as well as a corresponding opposite “read side” that is configured to display the opposing print side value in, for example, month display112, day display114, and year display116. In an embodiment, the read side of print band120has contrasting colors for the values and background; for example black characters on a white background. Thus, read side characters and print side characters can differ on the same print band120. In embodiments, the read side characters can be grouped together in a block opposite the print side characters such that every read side character is opposite its exact print side character on the print band120. In another embodiment, read side characters and print side characters are mixed throughout print band120.

Optionally, print band120further includes a hard stop that prevents rotation of a portion of print band120past upper roller122, lower roller124, or both. The hard stop thus inhibits rotation of print band120such that there is no possibility of over-rotating the read side into where the print side is normally positioned, or the print side into where the read side is normally positioned. As a result, display interface102and, more particularly, month display112, day display114, and year display116are kept ink-free.

Upper roller122comprises a cylinder configured to interface with one or more print bands120. In an embodiment, upper roller122comprises one end of the rotational mechanism for print band120, with lower roller124providing the opposite end. Upper roller122and lower roller124therefore provide the ends to keep one or more print bands120taut in a relative loop or circular configuration. Upper roller122is positioned, in an embodiment, proximate display interface102, and specifically, month display112, day display114, and year display116so that characters of print band120can be viewed when positioned at a particular position relative to upper roller122through display interface102. The values or characters of print band120that rotate proximate upper roller122are therefore read side characters for displaying. Upper roller122is operably coupled to adjustment knob128, as will be described below, so that when the user rotates adjustment knob128, upper roller122is likewise rotated. As a result, print band120is also rotated.

Lower roller124comprises a cylinder configured to interface with one or more print bands120. In an embodiment, as described, lower roller124comprises one end of the rotational mechanism for print band120, with upper roller122providing the opposite end. Lower roller124is positioned, in an embodiment, proximate printing components110, and specifically, die plate130, so that characters of print band120are substantially flush with a print side130aof die plate130. In embodiments, die plate130, and particularly print side130a, comprises a supporting surface configured to support a die, the die having indicia of any matter, including, but not limited to alphanumeric, text, graphics, images, patterns, and other indicia. Lower roller124is therefore configured to position characters of print band120such that the characters can be inked along with any indicia of the die incorporated on print side130aof die plate130, and subsequently marked onto a receiving surface. The values or characters of print band120that rotate proximate lower roller124are therefore print side characters for printing or stamping. In one specific embodiment, the print side characters are in wrong-read format, or in other words, create an image or text that is backwards when compared to the receiving-surface printed image or text.

Upper roller122is depicted inFIG. 6as having a larger circumference than lower roller124. However, other roller size configurations are possible. Further, additional rollers can be utilized if desired in a particular marking application. Additionally, upper roller122and lower roller124can be segmented into sections that are associated with each individual print band120, so that when a particular print band120is selected, those associated sections of upper roller122and lower roller124are subsequently rotated.

Date band buffer126acts in a dual function. In a first function, date band buffer126comprises a separator having fins between one or more print bands120. In an embodiment, date band buffer126comprises a thin strip positioned lengthwise with print bands120at each gap between print bands120. One end of a particular date band buffer126is positioned proximate upper roller122, with a second end positioned intermediate the length of print band120between upper roller122and lower roller124. Thus, in a first function, date band buffer126maintains print band120alignment. In a second function, date band buffer126changes the angle of print bands120such that the travel length is increased. As a result, date band buffer126allows the read side of print band120to be in a desired angled orientation. Because, without date band buffer126, in embodiments, print band120comprises a read side exactly opposite a corresponding print side, when a print side value is in the print interface, the corresponding read side would be positioned facing directly up across the diameter of print band120. Adjustment without date band buffer126would only be possible in increments of the indicia face segment height. Date band buffer126therefore provides the desired angled orientation by offsetting the travel length of the band120. In embodiments, date band buffer126can be made of flexible or rigid plastic, metal, or any other suitable material.

Adjustment knob128comprises a substantially cylindrical interface to the user that projects from upper body104. Adjustment knob128is operably coupled to upper roller122to affect selection of print bands120along upper roller122as well as rotation of upper roller122and, in turn, individual print bands120. In an embodiment, upper roller122and adjustment knob128share the same axis. Similarly, in embodiments, upper roller122can likewise extend from upper body104such that adjustment knob128encloses the projection portion of upper roller122. In another embodiment, adjustment knob128comprises an interface that extends from outside upper body104to inside upper body104when upper roller122is positioned fully within upper body104. In embodiments, adjustment knob128provides an adjustment interface that identifies the particular print band120under adjustment. In an embodiment, adjustment knob128is operably coupled to a shaft that passes through a series of idler wheels on which the display portion of print bands120ride. The idler wheels have indexing features on the outer circumference that act as locating detents to retain the print band120selection and which further provide tactile feedback while the user cycles through date band selections. The inner surface of the idler wheels have keyways (slots) which interface with keys (tabs) on the adjustment knob128shaft which positively drive the selected idler wheel. One band can be adjusted at a time, and the driven band120is selected by moving adjustment knob128toward and away from upper body104, along an axis that is coincident with the center of the idler wheel set.

In embodiments, adjustment knob128is configured to move transverse to upper body104to select the desired print band120for adjustment. Adjustment knob128is configured to be moved proximate to upper body104as well as distal to upper body104. When the desired print band120is selected, adjustment knob128is configured to be rotated, which in turn causes that particular print band120to be rotated. In an embodiment, adjustment knob128can have raised gripping projections that provide additional enhanced interfaces for the user when rotation or transverse adjustment is desired. In other embodiments, adjustment knob128can comprise a wheel, button, lever, or other appropriate interface that is configured to allow adjustment of print bands120.

In embodiments, marking device100comprises a plurality of adjustment knobs128. A first adjustment knob128comprises a substantially cylindrical interface to the user that projects from upper body104. First adjustment knob128is operably coupled to a first upper roller122to affect selection of a first set of print bands120along first upper roller122as well as rotation of first upper roller122and, in turn, individual print bands120of the first set. Likewise, a first lower roller124provides the opposite end of the rotational mechanism for the first set of print bands120. Marking device100further comprises a second adjustment knob128that comprises a substantially cylindrical interface to the user that projects from upper body104at a location proximate first adjustment knob128. In another embodiment, second adjustment knob128projects from a side opposite first adjustment knob. Second adjustment knob128is operably coupled to a second upper roller122to affect selection of a second set of print bands120along second upper roller122as well as rotation of second upper roller122and, in turn, individual print bands120of the second set. Likewise, a second lower roller124provides the opposite end of the rotational mechanism for the second set of print bands120. In other embodiments, additional adjustment knobs128, corresponding print bands120, and upper rollers122are provided. Therefore, a plurality of additional lines of print can be provided.

Printing components110comprises die plate130, swingarm132, swingarm pivot134, ink roller cartridge136, first free space zone138, and second free space zone140.

Die block or plate130comprises an apertured plate having a smooth machined surface. Effectively, die plate130provides a surface to operably couple dies that complement the adjustable or variable data imprinted by print bands120. Various dies can be affixed to die plate130. In other embodiments of marking device100, die plate130does not include a die and thus die plate130is left empty. In such embodiments, when inking, ink roller cartridge136does not contact anything until it rolls across print bands120. In an embodiment, as depicted inFIG. 6, die plate130is positioned proximate lower roller124and also proximate ink roller cartridge136such that die plate130is intermediate lower roller124and ink roller cartridge136. Further, as mentioned, lower roller124is positioned proximate die plate130such that individual characters from one or more print bands120can be inked to form the print side of print bands120. Thus, the aperture created within die plate130is configured to contain the currently-selected print band120values. Because the individual characters of print bands120are adjustable in and out of the print interface, and further because a single row of characters is selected as the printing values at any one time, a smooth, larger die plate is useful in preventing or inhibiting wear on ink roller cartridge136.

In another embodiment, marking device100does not include die plate130. In such an embodiment, when inking, ink roller cartridge136only contacts print bands120, similar to embodiments where no die is affixed to die plate130. In embodiments, because the surfaces that ink roller cartridge136rolls on is independent of die plate130, it is immaterial if dies proximate the print band120print side values are in place or not. Ink roller cartridge136is correctly spaced to ink the print band120values regardless. In embodiments, ink roller cartridge136can include a registration method to return ink roller136to a known neutral position such that wear on ink roller cartridge136can be spread across the circumference of the cartridge136.

Swingarm132is substantially L-shaped in an embodiment and comprises a swingarm body142, a projecting portion144, and a yoke146. Referring specifically toFIGS. 6,9A,9B, and10, swingarm body142extends at a first end from swingarm pivot134to projecting portion144at a second end. In an embodiment, an aperture within swingarm body142couples to swingarm pivot134. Projecting portion144extends from the second end of swingarm body142at an angle. Myriad lengths of swingarm body142and projecting portion144are possible, and therefore myriad angles of connection between swingarm body142and projecting portion144are possible. Yoke146is positioned at the end of projecting portion144distal swingarm body142and comprises a forking frame configured to operably couple to ink roller cartridge136. In embodiments, the components of swingarm132can be made of any rigid or semi-rigid material, such as plastic or metal. In an embodiment, swingarm132can be operably coupled to upper body104. In another embodiment, swingarm132can be operably coupled to lower body106. In other embodiments, swingarm132can be operably coupled to both upper body104and lower body106. In an embodiment, swingarm132comprises a spring-actuated release mechanism that is configured to grip, or when appropriate, release ink roller mechanism136. Referring specifically toFIG. 10, swingarm body142can be of varying lengths, depending on the marking device100application. For example, swingarm132acomprises a shorter swingarm body142. Such a configuration allows for a longer upper stroke and a higher force span at the ink roller cartridge136-die plate130interface. At the opposite end, swingarm132ccomprises a longer swingarm body142. Such a configuration allows for a shorter upper stroke and a lower force span at the ink roller cartridge136-die plate130interface. Swingarm132bcomprises an intermediate swingarm body142, and thus has characteristics intermediate swingarm132aand132c.

In an embodiment, a single swingarm132is positioned at an end of ink roller cartridge136such that ink roller cartridge extends and is supported in a cantilevering manner. In another embodiment, one swingarm132is positioned at one end of ink roller cartridge136and a second swingarm132is positioned opposite the first swingarm132on a second side of ink roller cartridge136such that ink roller cartridge136is supported on each side, thus forming more of a spindle-type subcomponent. Swingarm pivot134, in an embodiment, comprises an aperture within swingarm body142in combination with a pin or other rotatable projection point fastener. Swingarm pivot134therefore allows swingarm132, via swingarm body142, to rotate about the axis provided by the pin.

Myriad options exist for providing force against ink roller cartridge136via swingarm132and about swingarm pivot134in order to take advantage of the actuation of marking device100to ink die plate130and return ink roller cartridge136to a neutral position. Two such options are laid out inFIGS. 9A and 9B. Referring toFIG. 9A, a coil spring148can be positioned about swingarm pivot134and operably coupled to swingarm body142and components of upper body104. Referring toFIG. 9B, a compression spring150can be operably coupled to swingarm body142at one end and a component of upper body104at a second end. Coil spring148and compression spring150are thus configured to provide tension such that when swingarm132is actuated, force is directed through swingarm132and towards die plate130. Coil spring148or compression spring150therefore create a force that holds ink roller cartridge against die plate130. Likewise, when swingarm132is returned from actuation, swingarm body142, projecting portion144and thus, ink roller cartridge136is returned to a neutral position away from die plate130. Optionally, in an embodiment, lower body106can further comprise a track or guide aperture that is configured to stabilize the movement of ink roller cartridge136. Ink roller cartridge136comprises an ink-containing cylinder core with a porous, ink-distributing surface wrapped about the core. In an embodiment, the porous ink-distributing surface comprises a foam material. Other known ink-distributing materials can also be utilized. In an embodiment, ink roller cartridge136comprises a hollow through-axis aperture extending from one end of the cylinder to the opposite end of the cylinder. In another embodiment, the cylinder core is configured to be hollow for purposes of housing a spring mechanism that can secure ink roller cartridge136into swingarm132. The spring mechanism in such embodiments pushes outward causing the ends of the cylinder to apply force on one or more swingarms132, thus holding ink roller cartridge136in place. In another embodiment, a porous material acts as the ink-distributing surface as well as the ink-containing material. Thus, in such embodiments, there is no core. In embodiments, a 2 mm thick porous material completely contains the ink within the porous material. In embodiments, the ends of the cylinder core of ink roller136extend further than the porous, ink-distributing surface wrapped about the core. In other embodiments, the ends of the cylinder core of ink roller136extend to approximately the same length as the porous, ink-distributing surface wrapped about the core.

Ink roller cartridge136is operably coupled to yoke146, and thus positioned proximate die plate130. In an embodiment, the hollow through-axis aperture is utilized in combination with a post that can be placed through the through-axis aperture such that the post extends on one or both sides of ink roller cartridge136. The forks of yoke146can thus couple to the post, allowing ink roller cartridge136to freely rotate about the through-axis aperture.

In an embodiment, ink roller cartridge136can comprise a porous layer divided between two sections to have a different ink color on each section. In operation, as ink roller cartridge136rolls across die plate130, for example, then print bands120, a first section having a red ink would first contact print bands120, then contact die plate130with a second section having a blue color. In this way, multi-color impressions can be created on the receiving surface. In embodiments, a registration method is implemented to return ink roller136to a known neutral position. This known neutral position would thus provide the same color scheme to every receiving surface at every marking. Continuing the example above, ink roller136would be returned so that at the next first contact and subsequent rotation, print bands120are first contacted again with the first section having red ink, and the die plate130is subsequently contacted again with the second section having blue ink. In other embodiments, ink roller cartridge136can comprise a porous layer having a plurality of sections in order to have a plurality of different ink colors.

In another embodiment, ink roller cartridge136is not a roller but comprises a flat ink pad (not shown). In embodiments, the print interface can be inked similar to that with ink roller136, by upper body104movement and subsequent actuation of swingarm132about swingarm pivot134. In such an embodiment, as swingarm132is actuated, the flat ink pad is swung towards die plate130, where pressure is applied into die plate130, thus inking die plate130and print bands120. As upper body104movement continues, the flat ink pad is subsequently moved from ink pad130, thus allowing print bands120and die plate130, if installed, to contact the receiving surface. In an embodiment, the flat ink pad is configured to swivel in one or more locations to allow the ink pad to more easily clear die plate130and/or print bands120. In embodiments, a coupling mechanism operably coupling the ink pad to the actuating swingarm is configured to swivel in one or more locations to allow the ink pad to more easily clear die plate130and/or print bands120, in combination with or separate from, the aforementioned swivel of the flat ink pad.

Referring toFIGS. 11A-11C, the movement of swingarm132about swingarm pivot134when not actuated by the marking device, but instead manually actuated by the user, is illustrated. First, referring toFIG. 11A, marking device100is in a neutral position. Upper body104is fully extended distal lower body106and as a result, swingarm132is positioned about swingarm pivot134with the force of, for example, coil spring148or compression spring150such that ink roller cartridge136is proximate die plate130but not touching any of print bands120that extend through the aperture of die plate130. Referring toFIG. 11B, marking device100has swingarm132manually actuated outward. Swingarm132is pivoted about swingarm pivot134with the maximum distance from the neutral position ofFIG. 11A. Ink roller cartridge136is therefore extended via projecting portion144and yoke146outside of the plane formed by lower body106. Referring toFIG. 11C, ink roller cartridge136is removed from yoke146with swingarm132manually actuated outward. In this way, ink roller cartridge136can be replaced. Alternatively, in an embodiment, a locking mechanism can be utilized while replacing ink roller cartridge136. In an embodiment, the locking mechanism secures upper body104when in a depressed position such that swingarm132is actuated and held outward. In another embodiment, the locking mechanism secures swingarm132itself when swingarm132is manually actuated outward by the user. In this embodiment, upper body104remains in its extended neutral position. First free space zone138, referring toFIGS. 7A and 7B, is a void intentionally created within upper body104and lower body106along the wall proximate swingarm pivot134. First free space zone138provides space for the body action return springs that cause upper body104to return to a neutral position from lower body106. In embodiments, this void also allows for the free movement of swingarm body142about swingarm pivot134, and specifically the portion of swingarm body142proximate swingarm pivot134.

Similarly, second free space zone140, referring toFIGS. 8A and 8B, is a void intentionally created within upper body104and lower body106along the wall distal swingarm pivot134and proximate the elbow formed by the connection of swingarm body142and projecting portion144. Second free space zone140also provides space for the body action return springs that cause upper body104to return to a neutral position from lower body106. In embodiments, this void also allows for the free movement of swingarm body142about swingarm pivot134, and specifically the elbow portion of swingarm132formed by the connection of swingarm body142and projecting portion144.

Optionally, marking device100can further comprise a display card storage148. Referring toFIGS. 4 and 6, in an embodiment, display card storage148comprises a void located within upper body104that is dimensioned to hold unused display cards118. In the embodiment ofFIGS. 4 and 6, display card storage148is located opposite display interface102within the first side of upper body104, and is substantially hidden by the angle of display interface102. Display card storage148can be located elsewhere within the body of marking device100in embodiments.

In operation, referring generally toFIGS. 1-6, a user first selects a desired print interface. Specifically, the user can examine display interface102to learn the current print interface settings. If desired, the user can replace die plate130with another die plate130in the case that the current die plate displays a supplemental status, such as “FAXED.” In another embodiment, an individual die can be replaced on die plate130. Individual dies can therefore be mechanically or adhesively attached to die plate130. Likewise, the corresponding display card can be changed by accessing display card storage148and the stored display cards.

Assuming die plate130is now acceptable to the user, the user can adjust one or more print bands120using adjustment knob128. Adjustment knob128can be positioned between the user's thumb and forefinger or thumb and middle finger. If the user wishes to update the value furthest to the user's left, for example, month display112inFIGS. 1-5, adjustment knob128can be pushed transverse to upper body104in the direction of upper body104until it is in the month adjustment position. As described above, the proper positioning can be indicated by tactile response or visual indication on display interface102, in embodiments. Within marking device100, when adjustment knob128is pushed transverse to upper body104, the adjustment interface of adjustment knob128to print band120is set to the corresponding months print band120to identify the months print band120as the print band120under adjustment. This can be done, for example, via operation of the segmented upper roller122and segmented lower roller124.

Adjustment knob128can then be rotated to adjust the month value shown in month display112. Internally, the months print band120is rotated in the loop from upper roller122to lower roller124by operation of adjustment knob128. During rotation, display interface102is updated every time a new value of print band120is positioned in month display112. Similarly, during rotation, the print interface within die plate130is updated to reflect the same value as shown in display interface102and month display112. Print band120is rotated in this way until the desired setting is obtained.

Once the months setting has been attained, adjustment knob128can then be again moved transverse to upper body104to select another print band102for adjustment. Likewise, adjustment knob128can then again be rotated, which in turn causes the newly-chosen print band120to be rotated. In this way, the print interface can be adjusted.

Referring toFIGS. 12A-12D, after the desired print interface has been adjusted and set as described above, marking device100can be actuated to provide an imprint on a receiving surface. Referring specifically toFIG. 12A, the imprinting process begins with marking device100in a neutral position. In this position, the user arranges marking device100to the location on the receiving surface where an imprint is desired. Note that in this neutral position, upper body104is fully extended distal lower body106and as a result, swingarm132is positioned about swingarm pivot134with the force of, for example, coil spring148or compression spring150such that ink roller cartridge136is proximate die plate130but not touching any of print bands120that extend through the aperture of die plate130.

Referring toFIG. 12B, the actuation process is initiated. The user applies force to the top of marking device100, and specifically to upper body104in a direction parallel to the projection of lower body106and upper body104(and orthogonal to the receiving surface). Upper body104is therefore pushed toward lower body106. Coil spring148or compression spring150, in embodiments, acts upon swingarm132to force ink roller cartridge136, via swingarm body142and projecting portion144, to move in a direction across die plate130. Force is transferred, in an embodiment, through the larger diameter elements of ink roller cartridge136at either end. Ink roller cartridge136acts as a roller riding along the surfaces on either side of die plate130area. Force from swingarm132, which varies slightly through the path of travel during an actuation process cycle, is transferred through the larger diameter elements of ink roller cartridge136instead of the inked surface in order to precisely control the spacing and force of ink roller cartridge136on the print interface of die plate130and print bands120. InFIG. 12B, ink roller cartridge136has moved about halfway across die plate130, and has nearly completed inking the print side of print bands120that have been rotated into the print interface. Die plate130is also lowered.

Referring toFIG. 12C, the actuation process is continued. The user continues to apply force to the top of marking device100, thus moving upper body104further toward lower body106. Coil spring148or compression spring150, in embodiments, is further compressed or forced, as appropriate, which further forces ink roller cartridge136in a direction across die plate130. InFIG. 12C, ink roller cartridge136has moved nearly fully across die plate130, and has completed inking the print side of print bands120that have been rotated into the print interface. Die plate130is further lowered.

Referring toFIG. 12D, the actuation process is continued. The user continues to apply force to the top of marking device100, thus moving upper body104further toward lower body106. InFIG. 12D, ink roller cartridge136has moved all the way across die plate130, and is no longer in contact with die plate130. Finally, the actuation process is completed when die plate130is fully lowered onto the receiving surface (not shown).

In another embodiment, a marking device is substantially similar to marking device100, but comprises print bands120having print faces comprising alpha character indicia. In such an embodiment, print bands120can be adjusted by adjustment knob128similar to that as described above with respect to marking device100. In embodiments, the alpha character marking device can comprise a wide length of print bands120and corresponding wide print interface102having individual displays similar to displays112,114, and116, and accompanying sets of adjustment components108: upper roller122, lower roller124, date band buffer126, and adjustment knob128, in an embodiment, such that print bands120can be adjusted to form words or phrases. In other embodiments, as described above, secondary sets of words or phrases can be formed on secondary sets of print bands120utilizing secondary sets of adjustment components108comprising one or more secondary print bands120, secondary upper roller122, secondary lower roller124, secondary date band buffers126, and secondary adjustment knob128, with the corresponding print interface in an embodiment, as described above. In embodiments, entire sentences or phrases can therefore be spelled out.

In another embodiment, a marking device is substantially similar to marking device100, but comprises print bands120having print faces comprising numeric indicia in a style of traditional numberers. In embodiments, print bands120of this numberer marking device are configured to have individual print face indicia that can represent identification numbers or numeric codes for product identification or packaging purposes. In embodiments, multiple or secondary print bands120are provided as discussed above in order to imprint multiple pieces of numberer data. In embodiments, a date or timestamp-style data can also be imprinted with the numberer data, by incorporating secondary sets of adjustment components108comprising one or more secondary print bands120, secondary upper roller122, secondary lower roller124, secondary date band buffers126, and secondary adjustment knob128, with the corresponding print interface in an embodiment, as described above. In another embodiment, a marking device is substantially similar to marking device100, but comprises a handle that extends upwards from a top surface of the marking device upper body102to form a so-called “heavy duty” marking device. The handle is configured to be operably coupleable with the hand of the user. Optionally, in embodiments, all or portions of upper body102or lower body104are open. For example, front and back walls are removed from marking devices having four sidewalls such that only the two remaining sidewalls provide the body of the heavy duty marking device. By removing the front and back wall material, cost savings can be recognized. In embodiments, the two remaining sidewalls can be reinforced with steel.

In another embodiment, a marking device is substantially similar to marking device100, but printing components110: die plate130, swingarm132, swingarm pivot134, ink roller cartridge136, first free space zone138, and second free space zone140are absent or removed or, alternatively, are present but configured inactive to form a traditional non-self-inking marking device. In embodiments, the non-self-inking marking device allows a user to depress the print interface into an ink source, where ink is deposited onto the print interface, and subsequently allows the user to depress the inked print interface onto the receiving surface. Various embodiments of systems, devices and methods have been described herein. These embodiments are given only by way of example and are not intended to limit the scope of the invention. It should be appreciated, moreover, that the various features of the embodiments that have been described may be combined in various ways to produce numerous additional embodiments. Moreover, while various materials, dimensions, shapes, configurations and locations, etc. have been described for use with disclosed embodiments, others besides those disclosed may be utilized without exceeding the scope of the invention.

An alternative embodiment of the invention, illustrated inFIGS. 13,14, and15A-15D, provides a pivoting die plate to inhibit or prevent binding of the die plate which in turn prevents full motion of the self-marking or stamping device. Referring toFIGS. 13 and 14, device1000includes an outer or lower housing1002, an upper housing1004(only a portion of which is shown inFIG. 13) shiftable relative to the lower housing1002, a stamping assembly1006mounted to upper housing1004, and an ink roller assembly1008pivotally mounted within lower housing1002.

As discussed above with respect to body106of previous embodiments, lower housing1002includes structure for shiftably mounting upper housing1004thereto. Upper housing1004can be mounted to lower housing1002such that it shifts via tracks, cams, or other shifting mechanism from a neutral or resting position to a printing position in which marking or printing surfaces contact a substrate through an open end1010of lower housing1002, and back to the neutral or resting position. Typically, a compression spring (not shown) operably couples lower housing1002to upper housing1004. Upper housing1004can include the display screen as described above.

Stamping assembly1006includes a main support structure1012, an upper idler1014, a lower idler1016, one or more one or more print bands (not shown), an adjustment mechanism1018for adjusting one or more print bands, and a die plate assembly1020. Support structure1012includes threaded attachment sleeves1022for securing structure1012to upper housing1004by fasteners1024, such as screws. Structure1012further includes a first shoulder1026aspaced from a second shoulder1026b, each shoulder1026a,1026bhaving an aperture1028therethrough for receiving upper idler1014between shoulders1026a,1026b. Adjustment mechanism1018comprises an arm1030and a knob1032, arm1030extending through each shoulder aperture1028and a central bore1034of upper idler1014, such that upper idler1014is rotatable with respect to structure1012upon rotation of adjustment mechanism1018, as described with respect to adjustment knob128in previous embodiments.

Die plate assembly1020includes a die plate1050, and one or more die block plates1052for pivotably coupling die plate1050to structure1012. First and second die block plates1052each include a body portion1052ahaving apertures1054for receiving fasteners1056, such as screws, therethrough to fix die block plates1052to structure1012. Each die block plate1052further includes a flange1052bwith an aperture1058for rotatably connecting lower idler1016to structure1012via a pivot pin (not shown) extending through apertures1058and a central bore1060of lower idler1016.

Die plate1050comprises a flat plate having a first marking surface1050aand a second, opposite non-marking surface1050b, and a central opening1062extending between surfaces, as described above. Lower idler1016extends within and through central opening1062such that raised characters on a print band(s) (not shown) extend from a plane parallel to first marking surface1050a. Each end of the pivot pin (not shown) extending through central bore1060of lower idler1016, extends through a sleeved bore1064formed on each side of die plate1050to pivotably couple die plate1050relative to structure1012, such that die block plates1052are sandwiched between an end of lower idler1016and an edge of central opening162of die plate1050.

Optionally, first marking surface1050aof die plate1050can comprise raised alphanumeric characters and/or graphics of standard or customized fixed data or indicia for stamping onto a substrate. This fixed data is in combination with the variable data provided by the adjustable print bands described infra.

Optionally, protrusions1066extending from second non-printing surface1050bof die plate1050can be used to attach a first end of a compression spring (not shown), while a second end of compression spring is attached to a protrusion1068positioned on structure1012, such as the end of fastener1024. This compression spring ensures that die plate1050is at rest in a neutral, relatively horizontal position with respect to structure1012. The compression spring, when stretched under force, ensures the return of die plate1050to the neutral position when the force is removed.

Ink roller assembly1008includes a swing arm1070, ink roller1072, and optional bearings1074. Swing arm1070, as described above, comprises parallel L- or J-shaped support arms1076, connected at first and second ends by lateral ribs1078. A first end1076aof each arm1076includes structure defining an aperture1080for receiving a pivot pin therethrough (not shown) to pivotably couple swing arm1070to lower housing1002via apertures1082formed in lower housing1002. A second end1076bof each arm1076terminates in a hook shape for receiving and retaining an ink roller1072thereon, as described above with respect to previous embodiments. In one specific embodiment, a pin (not shown) extends through a central bore1084of ink roller1072. Each end of the pin extends beyond the respective end of ink roller1072, and is carried by the hook portion1076bof the swing arm1070. This allows for removable mounting of ink roller1072on swing arm1070for ease of change-out, and allows ink roller1072to freely rotate with respect to swing arm1070.

In an optional embodiment, a bearing1074is placed on the pin on each side of ink roller1072such that bearing1074is sandwiched between ink roller1072and arm1076of swing arm1070. Bearings1074are positioned such that during use during the inking process, an outer circumference of each bearing1074rolls along an outside edge of die plate1050so that ink roller1072maintains a fixed distance from, yet in contact with, die plate1050during inking. This in turn creates a fixed amount of compression for the soft, ink-filled ink roller1072to reduce or avoid the occurrence of over-application of ink to die plate1050and/or print bands that is otherwise observed when ink roller1072is compressed too deeply into die plate1050and/or print bands. Without a fixed amount of compression, in addition to over-application of ink, a large amount of friction can be created between ink roller1072and die plate1050, thereby making it difficult to depress upper housing1004to complete the stamping process.

Referring toFIGS. 15A-15D, in use of this embodiment, incorporation of a pivot point P for die plate1050via pivotal mounting to structure1012, allows an angle of die plate1050to change as ink roller1072passes across it during an inking cycle, thus creating clearance needed for device1000to complete its range of motion. Specifically, referring toFIG. 15A, device1000is at rest in an initial neutral position. Die plate1050is a substantially horizontal position, and swing arm1070with ink roller1072are proximate a first side1002aof lower housing1002.

Referring toFIG. 15B, as upper housing1004is initially compressed to start a stamping cycle, swing arm1070is biased forward into contact with die plate1050, inking any raised characters on a first portion1051of die plate1050and print bands, until the force of roller assembly1008causes die plate1050to pivot at pivot point P, compressing the compression spring (not shown). The force direction on ink roller1072changes and push force is reduced.

Referring toFIG. 15C, ink roller1072continues to move over a second portion1053of die plate1050, inking any raised characters on second portion1053of die plate and print bands, until ink roller1072clears die plate1050. Up until this point, the compression spring is spring loaded and is about to spring back to its neutral position which in turn returns die plate1050to its initial, substantially horizontal position.

Referring toFIG. 15D, upper housing1004is completely compressed such that inked die plate1050and print bands extend outside of aperture1010of lower housing1002to contact a substrate to be printed. Swing arm1070is positioned proximate a second side1002bof lower housing1002and completely clear of die plate1050. As the downward force on upper housing1004is removed (not shown), upper housing1004shifts back up to its initial resting position, while swing arm1070is rotated back to position proximate first side1002aof lower housing1002such that device1000is restored to its initial position shown inFIG. 15A. A single stamp cycle is now complete.

A potential use of the device according to embodiments of the invention is to apply customized dies or fixed data to the die plate in the form of raised alphanumeric characters or graphics on the print side of the die plate. A non-limiting example of the customized die plate includes a business name and address. These customized die plates are produced by a variety of different stamp manufacturers using a variety of methods to create the die plates, such as, for example, wet or dry etching, laser engraving, to name a few. Consequently, a total thickness of the custom die plates can vary by as much as 1 mm or more. During printing, this variation can create a potential problem of the marking surface of the die plate not lying in the same plane as the marking surface of the print band(s). If the marking surface of the die plate extends lower than the marking surface of the print band(s), for example, when the stamp is actuated, it would leave an impression of the die plate only without the print bands.

In response to this, and referring toFIGS. 16-19, according to an alternative embodiment of the invention, stamping assembly2000comprises a support structure2002, upper idler2004(similar to upper idler1014), lower idler2002(similar to lower idler1016), and a die plate assembly2008having an adjustment mechanism for adjusting a height of a die plate such that the marking surface of the die plate lies substantially within the same plane as the marking surface of the print band(s). Specifically, die plate assembly2008includes a die plate base2010that is coupled to support structure2002, and a die plate2012fixedly and interchangeably coupled to die plate base2010via one or more adjustment cams2014. Support structure2002is similar to support structure1012described in the previous embodiments ofFIGS. 13,14, and15A-15D. A die block plate2016is fixed to each side of support structure2002as described in these previous embodiments. Alternatively, a die block plate2016is integrally formed on each side of support structure2002. Each die block plate2016includes a flange2018having an aperture2020therethrough for receiving a pin for rotably securing lower idler2006to support structure2002, and pivotably mounting die block assembly2008to support structure2002. Flange2018further includes a ledge2022or shoulder extending therefrom for abutting engagement of die plate2012.

Die plate base2010includes a plate portion2024having a central aperture2026therethrough for receiving a customized die plate2012within. A plurality of cam protrusions2028a,2028bextend from a first surface2024aof plate portion2024of die plate base2010, each protrusion2028including an aperture2030for receiving and frictionally retaining a cam2014therein. In one specific example, as shown inFIG. 16, die plate base2010includes four total protrusions, one at each corner, or two front protrusions2028aand two rear protrusions2028b.

First surface2024aof plate portion2024of die plate base2010optionally includes one or more protrusions2032for securing an end of a compression spring (not shown) thereto for biased pivoting of die block assembly2008as described with respect to the embodiments ofFIGS. 13,14, and15A-15D.

Die plate base2010further includes a side flange2034extending from a second surface2024bof plate portion2024on each side edge of plate portion2024. Each side flange2034includes an aperture2036that, when assembled with die block plate2016of support structure2002, aligns with aperture2020of die block plate2016to receive a pin therethrough such that flange2018of die block plate2016is sandwiched between an end of lower idler2006and side flange2034of die plate base2010.

Die plate2012comprises a plate portion2038having a non-marking surface2038aand a marking surface2038b, and a central aperture2040extending between, similar to the die plate1050described with respect to the embodiments ofFIGS. 13,14, and15A-15D. Non-marking surface2038afurther includes a first protrusion2042aextending along a central portion of a first edge of plate portion2038, and a second protrusion2042bextending along a central portion of a second, parallel edge of plate portion2038. Each protrusion2042includes a central bore2044that, when assembled, align with apertures2030of cam protrusions2028of die plate base2010, such that each protrusion2042is sandwiched between a front cam protrusion2028aand a rear cam protrusion2028bof die plate base2010.

Referring toFIG. 17, adjustment cam2014includes a longitudinal pin, having a central portion2046, a first offset portion2048extending from a first end of central portion2046, and a second offset portion2050extending from a second end of central portion2046. Central portion2046is generally oblong or eccentric in cross-section, i.e. scotch yoke mechanism, to allow for height adjustment of die plate2012relative to die plate base2010. In one particular, non-limiting example, the cross section comprises a 1 mm eccentric2052translating to a maximum of 1 mm in height adjustment when cam2014is rotated 180 degrees.

Referring toFIG. 16, first offset portion2048is substantially circular in cross-section and is received and frictionally retained within corresponding aperture2030bof rear cam flanges2028bof die plate base2010, having corresponding cross-sections. Second offset portion2050can comprise an adjustment opening or structure2054, such as Alan key socket or screw head (Philips type or flat-head), for rotation of adjustment cam2014within front cam apertures2030a. Each cam aperture2030aof die plate base2010is of a sufficient cross section to allow passage of first offset portion2048and central portion2046of cam2014therethrough, while receiving and frictionally retaining second offset portion2050within.

In use, when assembled, and referring toFIGS. 18 and 19, when die plate assembly2008is an a first or “0” position, eccentric2052of body portion2046of adjustment cam2014is facing upward toward support structure2002, die plate2012is in its “up” position. As adjustment cam2014is rotated, for example, by a corresponding adjustment tool such as an Alan key or screwdriver (flat or Phillips-type), the height or position of die plate2012relative to die plate base2010moves downward. At 180 degree rotation from the first or “0” position, die plate2012is at its bottom-most position as eccentric2052of adjustment cam2014is facing downward toward the print surface or substrate such that the marking surface height (or die height) is maximized relative to the marking surface of the print band(s).

The friction fit of cam2014in corresponding aperture2030amaintains cam2014in its desired position. Optionally, retaining ring grooves2056can be formed in the surface of second offset portion2050to retain O-rings therein, thereby enhancing the friction fit by creating high friction to resist losing the desired adjustment setting.

By utilizing this adjustment mechanism, an optimal die plate position can be located for a given die height. Optionally, once optimal die position is achieved for a particular die plate, a permanent adhesive, such as superglue, rubber cement, epoxy, or the like, can be applied to the interface between cam and die plate base to lock it in its desired position.

Persons of ordinary skill in the relevant arts will recognize that the invention may comprise fewer features than illustrated in any individual embodiment described above. The embodiments described herein are not meant to be an exhaustive presentation of the ways in which the various features of the invention may be combined. Accordingly, the embodiments are not mutually exclusive combinations of features; rather, the invention may comprise a combination of different individual features selected from different individual embodiments, as understood by persons of ordinary skill in the art.