AU2020273378A1

AU2020273378A1 - Portable cleanroom printing cabinet

Info

Publication number: AU2020273378A1
Application number: AU2020273378A
Authority: AU
Inventors: Arthur L. Vellutato Jr.
Original assignee: Veltek Associates Inc
Current assignee: Veltek Associates Inc
Priority date: 2015-07-13
Filing date: 2020-11-20
Publication date: 2020-12-17
Anticipated expiration: 2036-07-13
Also published as: KR20230106726A; JP2018535111A; EP3322593A1; KR102552392B1; HK1252889A1; CN107683212A; CN107683212B; NZ739021A; WO2017011525A1; AU2022205235A1; AU2020273378B2; AU2022205235B2; EP3322593A4; KR20180029955A; AU2016294408A1; AU2016294408B2; NZ777531A; JP6671455B2; CA2984143A1

Abstract

PORTABLE CLEANROOM PRINTING CABINET ABSTRACT A portable printing cabinet having a housing with a substantially enclosed interior and an opening formed in a side surface thereof, a printing device located within the interior of said housing, and a paper tray positioned outside of the housing and in communication with the opening of the housing is provided. C14 Cz cn LO d CN LL LO 00 "r Co LO :C: IWO 0 LL. C) Cl> 4/4

Description

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PORTABLE CLEANROOM PRINTING CABINET

Related Applications

[0001] This application is related to US Patent Application No. 14/033,045, filed 20 September

2013, US Patent Application No. 14/797,319, filed 13 July 2015, International Patent Application

No. PCT/US2016/042036, filed 13 July 2016, Australian Patent Application No. 2016294408,

entitled "Portable cleanroom printing cabinet" and filed 13 July 2016 in the name of Veltek

Associates, Inc., the entire content of each of which is incorporated as if fully set forth herein.

Field of the Invention

[0002] The invention relates to a portable printing cabinet for use in a sterile environment. In

particular, the invention provides a multi-compartment printing unit that can be used in a

cleanroom without introducing outside contaminants such as particulates and microorganisms.

Background of the Invention

[0003] Sterile "cleanroom" environments demand that any person or item entering the room

be free of a certain level of contaminants. Sterilized environments are most commonly designed

for use in manufacturing facilities and medical research and treatment facilities in the

pharmaceutical, biotechnology, and healthcare industries, to name a few. Sterile cleanroom

environments may be classified under a variety of classification schemes, including the

International Organization of Standardization ("ISO") Cleanroom Standards, whereby the highest

level of sterilization is an ISO 1 cleanroom, and normal ambient air (no sterilization) is classified

as ISO 9. The ISO standards correspond to the allowed number of particles having a minimum

particle size per cubic meter. For example, an ISO 5 cleanroom allows the following: a maximum of 100,000 particles with a particle size greater than 0.1 pm; a maximum of 23,700 particles greater than 0.2 pm; a maximum of 10,200 particles greater than 0.3 pm; a maximum of 3,520 particles greaterthan0.5 pm; a maximumof 832particles greaterthan 1 pm; and amaximumof 29 particles greater than 5 pm.

[0004] A variety of products are utilized inside cleanroom environments, including paper and

paper products used to document manufacturing and testing records within the controlled areas.

Such paper products include, but are not limited to, forms, logbooks, tags and batch records. All

of these documents are necessary to detail the manufacturing and testing processes so as to ensure

that proper procedures are followed and results are documented. Indeed, these documents are

subject to review by regulatory agencies, such as the U.S. Food and Drug Administration, and

represent the mechanism by which such agencies can review the manufacturing and testing process

details after the manufacture, testing, or handling of a drug product, for example, to assure patient

safety.

[0005] However, paper and paper products are a significant contamination source due to

shedding fibers, particulates and microorganisms (e.g., bacillus and mold). About 40% of paper

products used in sterile environments are standard documents that can be pre-printed, packaged

and sterilized by known means. However, the remainder of the documents introduced into sterile

environments cannot be pre-printed, sterilized and packaged in a timely fashion. Their preparation

requires information that is not readily available until days, or even hours, before the

manufacturing or testing is to begin. In some instances, they must be prepared while

manufacturing and/or testing is underway. Because of this, these documents are forced to be

brought into sterilized areas without prior treatment for the reduction of shedding fibers,

particulates and microorganisms. Thus, they represent a significant contamination source.

[0006] To solve this problem, the invention provides for a portable cleanroom printing cabinet

which allows documents to be printed in sterile environments without the introduction of any

outside contaminants.

Object of the Invention

[0007] It is an object of the invention to substantially overcome or at least ameliorate one or

more of the above disadvantages, to meet the above need, or to provide a useful alternative.

Summary of the Invention

[0008] In a first aspect, the present invention provides a printing cabinet for housing,

comprising:

a housing for receiving a discrete printing device having a defined exterior surface, wherein

an opening is formed in a side of the housing, the opening positioned to align with a dispensing

end of the discrete printing device;

a paper tray positioned outside of the housing and directly aligned with and adjacent to the

opening of the housing to receive printed paper expelled by the discrete printing device; and

a filtration unit including a fan and a filter, the fan configured to blow air out of the housing

through the filter.

[0009] In a second aspect, the present invention provides a printing cabinet, comprising:

a housing having a substantially enclosed interior and an opening formed in a side surface thereof;

an interior shelf located within the housing defining an upper portion and a lower portion

of the housing, wherein the interior shelf is configured to receive a discrete printing device having

a defined exterior surface;

a paper tray positioned outside of the housing and in direct communication with the opening of the housing; at least one hinged cover that provides access to the interior of the housing at the upper portion of the housing; at least one air filtration unit located within the housing having vents positioned on an outside surface of the housing, wherein the at least one air filtration unit includes a filter and a fan configured to blow air out of the housing through the filter and the vents; and at least one power source.

[0010] In a third aspect, the present invention provides a printing cabinet for housing a

printing device having a dispensing end that expels printed paper, comprising:

an opening is formed in a side of the housing, the opening aligned with the dispensing end of the

discrete printing device;

a paper tray positioned outside of the housing at an acute angle with respect to the side of

the housing, and aligned with the opening of the housing to receive the printed paper expelled by

the discrete printing device; and

a filtration unit including a filter and a fan configured to blow air out of the housing through

the filter.

[0011] Accordingly, a preferred embodiment provides a portable printing cabinet which

includes a housing having a substantially enclosed interior and an opening formed in a side

surface thereof, a printing device located within the interior of said housing, and a paper tray

positioned outside of the housing and in communication with the opening of the housing.

[0012] There is disclosed herein a portable printing cabinet which includes a housing having

a substantially enclosed interior and an opening formed in a side surface thereof, an interior shelf located within the housing defining an upper portion and a lower portion of the cabinet, wherein the upper portion has a top surface with a step-up portion, a printing device located on the interior shelf, a paper tray positioned outside of the housing and in communication with the opening of the housing, at least one L-shaped hinged cover that forms part of the step-up portion of the top surface of the upper portion of the housing, a second hinged cover fixed to the top surface of the upper portion of the housing adjacent to the step-up portion, at least one air filtration unit located within the housing having vents positioned on an outside surface of the housing, and at least one power source.

Brief Description of the Drawings

[0013] A more complete appreciation of the invention and many of the attendant advantages

thereof will be readily obtained as the same becomes better understood by reference to the

following detailed description when considered in connection with the accompanying drawings,

wherein:

[0014] FIG. 1 is a perspective view of a portable printing cabinet in accordance with an

exemplary embodiment of the invention;

[0015] FIG. 2 is a front sectional view of the portable printing cabinet illustrated in FIG. 1

taken along line 2-2;

[0016] FIG. 3 is a side elevational view of the portable printing cabinet illustrated in FIG. 1;

[0017] FIG. 4 is a front perspective view of a portable printing cabinet in accordance with an

exemplary embodiment of the invention;

[0018] FIG. 5A is a cutout view of the front of the portable printing cabinet illustrated in FIG.

4, showing the hinged cover in an open position to provide access to the printing device in accordance with an exemplary embodiment of the invention; and

[0019] FIG. 5B is a cutout view of the front of the portable printing cabinet illustrated in FIG.

4 showing the paper tray in accordance with an exemplary embodiment of the invention.

Detailed Description

[0020] Referring to FIGS. 1-3, the portable printing cabinet 100 of the invention allows the

printing of documents within a controlled, cleanroom environment onto sterilized paper at high

speeds. This cabinet reduces or eliminates the presence of bioburden (e.g., microorganisms such

as bacillus and mold) on printed documents. The printing cabinet 100 further assures that

particulates and shedding fibers from the paper is minimized or eliminated. The printing cabinet

100 of the invention may be used in any ISO level controlled area, including cleanrooms at an ISO

level or lower.

[0021] As shown in FIG. 1, the printing cabinet 100 generally includes a housing 102 having

at least four sides and a bottom 104. In the embodiment shown, the four sides are formed of thin

rectangular-shaped panels and include a left side 130, front side 124, right side 134, and back side

135. The sides 124, 130, 134 and 135 are preferably joined with the bottom 104 of the housing

102 to form a substantially rectangular box-shaped cabinet 100. Preferably, the housing 102 forms

an enclosure that defines an interior space. Cross-member 113 may connect the front side 124 of

the housing 102 to the back side 135 of the housing 102. The cabinet 100 may be supported by

any structure known in the art. As shown in FIG. 1, the cabinet 100 is supported by a plurality of

wheels 106 fixed to the bottom 104. The use of wheels 106 allows the cabinet 100 to be moved

out of the cleanroom when necessary for cleaning or sterilization treatment. Legs may also be

used if the cabinet 100 does not need to be moved from one location to another.

[0022] The housing 102 may be formed of any durable material which can store a printing device and other items, and which prevents the passage of fluids or air into the interior of the cabinet 100. Indeed, the housing 102 preferably forms a sealed unit (with covers 110 and 112) such that contaminants cannot escape. According to one embodiment, the entire housing 102 is formed of stainless steel. According to another embodiment, other durable metals or plastic materials may be used. Metals are preferred such that sterilization of the unit can be performed by an autoclave or other similar devices.

[0023] Referring now to FIG. 2, a cross-section is shown of the printing cabinet 100 taken

along line 2-2 of FIG. 1. An interior shelf 118 may be provided that divides the cabinet 100 into

an upper portion 114 and a lower portion 120. In one embodiment, the interior shelf 118 is welded

to sides 124, 130, 134 and 135 of the housing 102 to form a complete assembly. The upper portion

114 houses a printing device 116, which can be placed on the interior shelf 118. Any printing

device known in the art may be used. High-grade printers which emit the lowest level of

particulates, reduce shedding, and reduce ink droplet release, are preferred. According to one

embodiment, the CDT 1600S printer manufactured by Colordyne Technologies LLC of

Brookfield, Wisconsin, which may include MEMJET@ printing technology, may be used.

However, it will be appreciated that any suitable or standard printer can be utilized within the

scope of the invention.

[0024] The upper portion 114 of the cabinet 100 may also house an air filtration unit 133

having a fan aligned with exterior vents 140 positioned on at least one side of the housing 102 (see

FIG. 1). Any filtration unit known in the art may be used, though preferable that the unit achieves

a filtration rate of 99.97%. More specifically, the unit 133 must filter air from the interior of the

cabinet 100 at a rate of 99.97% with respect to 0.5 micron particles. According to one embodiment,

a high-efficiency particulate air ("HEPA") filtration unit may be used. The fan of the air filtration unit 133 blows air out of the cabinet through the filter. This maintains the cabinet 100 under negative pressure, via the exterior vents 140, such that the risk of transmission of particles to the exterior environment is minimized. Thus, if a door 122 or 132, or a cover 110 or 112, is opened, the fan will suck air into the housing interior, preventing particles from escaping. In addition, the interior shelf 118 may have vents (not shown) which permit equalization of the pressure in the cabinet 100 between the upper portion 114 and the lower portion 120.

[0025] According to a preferred embodiment, at least one hinged cover is fixed to the housing

102 of the cabinet 100 so as to enclose the upper portion 114 and still allow for easy access to the

interior of the housing 102, such as to access the printing device 116. As shown in FIG. 1, the

upper portion 114 is enclosed by two adjacent hinged covers 110 and 112 having a generally

triangular cross-section. Specifically, hinged covers 110 and 112 may each have angled edges 123

which engage the front side 124 and back side 135 of the housing 102. The front cover 110 may

be hinged to cross-member 113 of the housing 102 along one lateral side 115 that extends

transversely across from side 124 to side 134. Any method of hinging one member to another

member may be used, including piano style mechanical hinges or the inclusion of a polymer strip

(e.g., polypropylene) between the cover 110 and the cross-member 113 along side 115. While the

air filtration unit 133 adequately maintains the interior of the cabinet 100 under negative pressure

so as to minimize the risk of contamination, gaskets or rubber seals may optionally be utilized

between the hinged covers 110 and 112 and the housing 102 (on any side) to further ensure

contamination protection.

[0026] The front cover 110 may include a paper tray 126 on an outer surface for receiving

printed documents. In another embodiment, the paper tray 126 need not be on the front cover 110,

but may be separate from the housing 102 and attached thereto. Alternatively, the printed paper may be ejected from an opening in the housing 102 located on any side adjacent to the end of the printing device 116 (see FIGS. 4 and 5A-B).

[0027] As seen in FIG. 2, the printing device 116 may include a paper guide 128 extending

from an end thereof. The paper guide 128 may be a C-shaped paper dispensing guide having a

plurality of rollers 131 along its length. In one embodiment, the paper guide 128 is a half circle

with a radius of between 3 and 8 inches, such that a variety of paper sizes may be accommodated.

When the printed paper is expelled from the printing device 116, it is moved along by the rollers

131 on the paper guide 128 in direction "A." The paper guide 128 guides the paper upward to be

received in the paper tray 126, which is then accessible without needing to lift the front cover 110

to access the printing device 116. In this way, the paper guide 128 transfers the paper from the

printing device 116, inside of the housing 102, to the paper tray 126, outside of the housing 102.

The printed paper should be ejected from the printing device 116 with a force sufficient to push

the paper along the rollers 131 of the paper guide 128 and deposited into paper tray 126 above. In

one embodiment, a gear-driven assembly having a motor (not shown) may be used to rotate the

rollers to thereby push or pull the printed paper along the paper guide 128. The front cover 110

includes an opening 129 in communication with the paper tray 126 so as to allow the printed paper

to pass through. Specifically, the paper guide 128 is connected to the top of the opening 129 in

the front cover 110 such that the paper can be deposited into the paper tray 126 on top of any paper

previously printed. The front cover 110 only needs to be lifted if the printing device 116

experiences a paper jam or lodged paper needs to be removed from the paper guide 128. The front

cover 110 may include a handle 121 designed for use by an individual wearing a protective glove.

[0028] The rear cover 112 may be configured similarly to the front cover 110. The rear cover

112 may be used to feed paper into the printing device 116. Specifically, the rear cover 112 may be hinged to cross-member 113 of the housing 102 along a lateral side 117 opposite the side connected to the front cover 110. The hinging mechanism may be similar to those used with the front cover 110, as discussed above. The rear cover 112 may have a handle 119, which is designed for use by an individual wearing a protective glove. The opened first and second covers 110 and

112, respectively, are illustrated in FIG. 2.

[0029] The left side 130 of the housing 102 may include one or more doors 132 (one is

illustrated in FIG. 1) for access to the printing device 116 and upper portion 114 of the printing

cabinet 100. Specifically, while not limited to such an embodiment, the door 132 may be used for

printer cartridge replacement. Because high-quality printing devices are preferred according to

the invention, numerous printing cartridges may need to be used and replaced often. The user may

access the printing device 116 to replace printing cartridges by opening the door 132, as shown in

FIG. 2. While the door 132 is depicted on the left side 130 of the cabinet 100 in FIGS. 1 and 2, it

may be positioned on any side of the cabinet 100 which allows access to the printing device 116

(e.g., front side 124). Like the front and rear covers 110 and 112, respectively, gaskets or rubber

seals may optionally be utilized between door 132 and the housing 102 to further ensure

contamination protection.

[0030] As shown in FIG. 3, the right side 134 of the housing 102 may include ports for the

connection of a data cable and/or power cable. Specifically, two data connection ports 136 and

one power outlet 138 are shown, although any number of ports may be present for various

purposes. According to another embodiment, the ports 136 and outlet 138 may be provided on

any side of the cabinet 100. The data connection ports 136 and outlet 138 may be present on both

the outside of the housing 102 (as shown in FIG. 3) and the inside of the housing 102 for connection

to the printing device 116 or any other devices inside the cabinet 100. Specifically, the printing device 116 and other electronics may be plugged into the power outlet 138, for example, from the inside of the housing 102. From the outside of the housing 102, an AC electrical power cord, which is plugged into a power source, may then be plugged into the power outlet 138. As shown in FIG. 3, the power outlet 138 on the outside of the housing 102 is a male connector (with two or three prongs) that is inset into the housing 102 so as to protect it from damage. At the interior of the housing 102, the outlet 138 is a female receptacle to accept the power plugs from the printing device 116 and other electrical components. The placement of ports 136 and power outlet 138 on the exterior surface of the cabinet 100 are advantageous in that the doors 122 (discussed below) need not be opened in order to plug and unplug the printing device 116, such as when the cabinet

100 is moved from one location to another.

[0031] As a portable unit, the cabinet 100 may operate on either AC electrical power (i.e.,

11OV AC in the U.S. or 220V AC globally) or battery power. In one embodiment, a battery (not

shown) is located within the lower portion 120 of the cabinet 100 and is electrically connected to

the power outlet 138. The battery may be of a type that would power the printing device 116 and

one or more air filtration units 133 for a period of up to six hours. When not in use, the battery

may be charged via electrical power delivered through the outlet 138.

[0032] The lower portion 120 of the printing cabinet 100 is located below the interior shelf

118 and may be used for storage of miscellaneous items such as sterilized paper. The lower portion

120 may be accessible to a user via one or more doors 122 fixed to any of the side(s) of the cabinet

100. As shown in FIGS. 1 and 2, the lower portion 120 has two doors 122 fixed to the front side

124 of the cabinet 100, although more than two doors may be included. The lower portion 120

may also house an air filtration unit (not shown) similar to the filtration unit 133 housed in the

upper portion 114. As discussed herein, gaskets or seals may be utilized between the outer periphery of the door(s) 122 and the housing 102 to further ensure contamination protection.

[0033] In an alternative embodiment (not shown), the housing 102 is substantially enclosed,

such that it has no openings or doors, except opening 129 where the printed paper passes into the

paper tray 126. The presence of the air filtration unit 133 within the housing 102 maintains

negative pressure within the cabinet 100, such that protection against contamination is ensured.

[0034] In practice, the printing device 116 and air filtration unit(s) 133 may be controlled via

a wireless connection or hard wire connection to a network. According to one embodiment where

hard wiring is used, a USB cable or an Ethernet cable may be connected from the PC to the ports

136, and then another cable may be connected from ports 136 to the printing device 116 on the

inside of the housing 102. In another embodiment, any known wireless communication methods

may be used, including, but not limited to, WiFi and Bluetooth© capabilities. Control of the

printing device 116 may be accomplished within the cleanroom by any known wireless or wired

devices, including, but not limited to, a network computer, an iPad, a PC, or a laptop computer.

When it receives a signal, the printing device 116 prints the required document and expels it into

the paper tray 126 for collection by a user. The motor can activate the rollers 131, for instance,

when the printing device 116 is activated. In an embodiment, the motor can have a wireless or

wired connection and can receive the same signal as the printing device 116.

[0035] To further ensure the sterility of the cleanroom environment, the printing device 116

prints onto pre-sterilized paper. Any methods of sterilizing the paper known to one skilled in the

art may be used, including, but not limited to, steam, heat, chemical treatment, or gamma

irradiation. Preferably, a non-shedding paper product is used. In one embodiment, a plastic, non

shedding printing medium, such as Teslin© manufactured by PPG Industries of Pittsburgh,

Pennsylvania, may be used. However, any suitable paper or printing medium can be used. The paper or printing medium may be provided on rolls at a predetermined length, or it may be provided as cut sheets prepared in ream. As set forth above, this paper may be stored in the lower portion

120 of the cabinet 100 when not in use.

[0036] The printing cabinet 100 is fully portable. All contents located within the cabinet 100

(e.g., printing device 116, air filtration unit 133) are enclosed within the housing 102. The printing

cabinet 100 can be wheeled to other locations and plugged into any standard AC power source.

[0037] Another embodiment of a portable printing cabinet 400 is illustrated in FIGS. 4 and

A-B. In this embodiment, the printing cabinet 400 and its housing 402 generally have the same

structure as printing cabinet 100, including at least four sides and a bottom surface, but the upper

portion 414 of housing 402 has a different shape and design. Like cabinet 100, printing cabinet

400 is supported by a plurality of wheels 106 fixed to its bottom surface 404, which allows the

cabinet 400 to be moved out of the cleanroom when necessary for cleaning or sterilization

treatment. The housing 402 may be formed of the same material(s) as housing 102 and should

form an enclosed unit to prevent contaminants from escaping.

[0038] The interior of the printing cabinet 400 is arranged similarly to the interior of cabinet

100, wherein an interior shelf 418 is provided that divides the cabinet 400 into an upper portion

414 and lower portion 420. The interior shelf 418 may be coupled to the housing 402 in the same

manner as interior shelf 118 is to housing 102, as set forth above. The upper portion 414 houses

the printing device 116 which is positioned on the interior shelf 418. The lower portion 420 may

house at least one air filtration unit 133 aligned with vents 140 positioned on the outside of at least

one side of the housing 402. The lower portion 420 may further include doors 422 on a front

surface 423 thereof that allow for easy access to the storage area within the lower portion 420 and

the air filtration unit 133.

[0039] In one embodiment, the upper portion 414 and lower portion 420 are designed as

separate and discrete housings, each having a top, bottom, and four sides generally forming a

substantially rectangular shape. The lower portion 420 can act as a base unit that supports the

upper portion 414. The upper portion 414 can act as a printer unit that sits on the lower portion

420 and houses the printing device 116. In another embodiment, the lower portion 420 is optional

and the upper portion 414 may house all components, including the printing device 116 and the at

least one air filtration unit 133, and be supported by legs (not shown).

[0040] As shown in FIGS. 5A-B, the upper portion 414 has a top surface 442 and two opposing

ends 444 and 446. The top surface 442 has a raised or step-up portion 448 (see FIG. 4) adjacent

to end 446. The step-up portion 448 is raised because that end 446 receives the larger paper loading

section of the printing device 116 which allows for large volumes of paper to be received therein.

[0041] Part of the step-up portion 448 is formed by at least one hinged cover 412, which is

fixed to the housing 402 and encloses the upper portion 414 while allowing for easy access to the

printing device 116. As best shown in FIG. 5B, the hinged cover 412 may be hinged to the housing

402 using any rotatable attachment mechanism know in the art, including piano style mechanical

hinges. When the hinged cover 412 is lifted using the handle 419, access to the printing device

116 is provided so as to allow a user to feed paper into the printing device 116, fix paper jams, and

the like.

[0042] The hinged cover 412 generally has an "L" shape formed by two joined surfaces 452

and 454. The top surface 452 forms part of the step-up portion 448, and side surface 454 forms

part of a side 456 of the upper portion 414. The upper portion 414 also has an opposing side 458

at end 444. The top surface 452 may include a window 460, such as a glass window, so that the

user can see the printing device 116 and ensure that it is working properly (e.g., to check paper levels) without having to open the hinged cover 412. While the air filtration unit 133 adequately maintains the interior of the cabinet 400 under negative pressure so as to minimize the risk of contamination, gaskets or rubber seals may optionally be utilized between the hinged cover 412 and the housing 402 to further ensure contamination protection. A bar 462 is fixed to the side 456 of the upper portion 414 of the housing 402 to assist the user in moving the printing cabinet 400.

[0043] As shown in FIG. 5A, a second hinged cover 410 forms a part of the top surface 442

of the upper portion 414 at end 444. The second hinged cover 410 encloses the upper portion 414

while also allowing for easy access to the dispensing end 415 (i.e., where the printed document is

expelled) of the printing device 116. The second hinged cover 410 may be hinged to the housing

402 using any means set forth herein.

[0044] The first hinged cover 412 and second hinged cover 410 may remain in an opened

position when opened by a user so that the user need not hold them in place while accessing the

inside of the printing cabinet 400. For example, first hinged cover 412 may have a bar 413 that

holds it open and/or a slow close mechanism (not shown) to avoid the first hinged cover 412 from

slamming down onto the housing 402 when closed. The second hinged cover 410 may also include

a bar and/or slow close mechanism.

[0045] A paper tray 426 is coupled to the side 458 of the upper portion 414 to receive printed

paper Z being expelled from the printing device 116 in direction Y. As shown in FIG. 5A, side

458 of the upper portion 414 has a generally rectangular opening 464 formed therein. The opening

464 is aligned with and in communication with the printing device 116, specifically the area where

the printed document is expelled from the printing device 116. Since the printing device 116 is

inside the printing cabinet 400, the paper exits the printing device 116 and is directly expelled

through the opening 464 to be received in the paper tray 426 on the outside of the printing cabinet

400. In one embodiment, the paper tray 426 includes at least two prongs 466 at one end thereof.

The prongs 466 engage the side 458 at the opening 464 and function as hooks so as to hold the

paper tray 426 in place when the weight of paper tray 426 is allowed to rest on the edge of opening

464. In this way, the paper tray 426 can be securely held in place at an angle extending toward the

ground so as to allow the printed paper to slide down into the paper tray 426 in direction B when

exiting through the opening 464. The paper tray 426 can also be easily removed to be cleaned,

replaced, or to allow access to the opening 464. The paper tray 426 is sized and configured so as

to be able to receive paper of various sizes and in large volumes. The paper tray 426 is generally

formed of the same material used to form the housing 402 (e.g., stainless steel). In an alternative

embodiment, the paper tray 426 need not be separate from the housing 402, but can be a lower part

of the housing 402.

[0046] The printing cabinet 400 may further include ports and/or power outlets (not shown)

such as those illustrated in FIG. 3. The ports and power outlets may be of any type and arrangement

as set above. Moreover, the printing device 116 and air filtration unit(s) 133 may be controlled

via a wireless connection or hard wire connection to a network as discussed herein.

[0047] Although this invention has been described in connection with specific forms and

embodiments thereof, it will be appreciated that various modifications other than those discussed

above may be resorted to without departing from the spirit or scope of the invention. For example,

equivalent elements may be substituted for those specifically shown and described, certain features

may be used independently of other features, and in certain cases, particular locations of elements

may be reversed or interposed, all without departing from the spirit or scope of the invention as

defined in the appended Claims.

Claims

The claims defining the invention are as follows:

1. A printing cabinet for housing, comprising:

end of the discrete printing device;

through the filter.

2. The printing cabinet of claim 1, further comprising at least one hinged cover fixed to the

housing.

3. The printing cabinet of claim 1, further comprising an interior shelf located within the

housing defining an upper portion of the housing and a lower portion of the housing.

4. The printing cabinet of claim 1, wherein a first section of the housing associated with a

paper receiving end of the discrete printing device includes a top surface having a step-up portion

as compared to a second section of the housing associated with the dispensing end of the discrete

printing device.

5. The printing cabinet of claim 4, further comprising at least one L-shaped hinged cover that

forms part of the step-up portion of the top surface of the housing.

6. The printing cabinet of claim 5, wherein the L-shaped hinged cover includes a window.

7. The printing cabinet of claim 4, further comprising a second hinged cover fixed to the top

surface of the housing adjacent to the step-up portion.

8. The printing cabinet of claim 1, wherein the housing is made of stainless steel.

9. The printing cabinet of claim 1, further comprising at least one door fixed to the housing.

10. The printing cabinet of claim 1, further comprising a second air filtration unit located

within the housing and having vents positioned on the outside of the housing.

11. The printing cabinet of claim 1, further comprising a plurality of wheels fixed to a bottom

surface of the housing and a handle fixed to a side of the housing such that the printing cabinet is

portable.

12. The printing cabinet of claim 1, further comprising at least one data connection port located

on the housing.

13. The printing cabinet of claim 1, further comprising a power outlet located on the housing.

14. The printing cabinet of claim 13, further comprising a battery located within the housing

and being electrically connected to the power outlet.

15. The printing cabinet of claim 1, wherein the paper tray includes at least two prongs at one

end for engaging with the opening of the housing and removably engaging the paper tray thereto.

16. The printing cabinet of claim 1, wherein the paper tray has a top edge and an opposing

bottom edge, such that the top edge is directly aligned with and adjacent to the opening of the

housing.

17. The printing cabinet of claim 16, wherein the opposing bottom edge is configured to hold

printed paper expelled by the discrete printing device.

18. The printing cabinet of claim 1, wherein the filtration unit is configured to maintain a

negative pressure within the housing.

19. A printing cabinet, comprising:

a housing having a substantially enclosed interior and an opening formed in a side surface thereof; an interior shelf located within the housing defining an upper portion and a lower portion of the housing, wherein the interior shelf is configured to receive a discrete printing device having a defined exterior surface; a paper tray positioned outside of the housing and in direct communication with the opening of the housing; at least one hinged cover that provides access to the interior of the housing at the upper portion of the housing; at least one air filtration unit located within the housing having vents positioned on an outside surface of the housing, wherein the at least one air filtration unit includes a filter and a fan configured to blow air out of the housing through the filter and the vents; and at least one power source.

20. A printing cabinet for housing a printing device having a dispensing end that expels printed

paper, comprising:

discrete printing device;

the discrete printing device; and

the filter.