Abstract: A hand crank for actuating a gear assembly mechanism such as for a lifting jack is described. The hand crank comprises an elongated metal primary handle, a tube bent at very precise angles to define two spaced-apart handle portions, separated from one another in parallel planes, by a central portion. A connector includes a bracket that has a V-shaped slot to secure the hand crank to a gear actuator at two alternate working positions and a storage position. When in the first position, the handles of the hand crank are parallel to a longitudinal axis of the actuator and define a high-speed position. When in the second position, the two handle portions are parallel to the longitudinal axis of the actuator. The handle portions are spaced about 8.5 inches from one another and about the same distance apart to constitute an ergonomic disposition when used at their first position.

Abstract: A handlebar extension for a bicycle handlebar includes an armrest portion and an elongate forward portion which is integral with, and extends away from the armrest portion. The handlebar extension is configured such that the armrest portion may be attached to the handlebar of a bicycle with the elongate forward portion extending forwardly away from the handlebar, supported by the armrest portion. A bicycle having a handlebar and a pair of handlebar extensions mounted to the handlebar is also provided.

Abstract: A 99.99% pure indium feed is charged into crucible 8 and heated to 1250° C. by upper heater 6 in a vacuum atmosphere at 1×10−4 Torr, whereupon indium evaporates, condenses on the inner surfaces of inner tube 3 and drips to be recovered into liquid reservoir 9 in the lower part of tubular member 11 whereas impurity elements having lower vapor pressure than indium stay within crucible 8. The recovered indium mass in liquid reservoir 9 is heated to 1100° C. by lower heater 7 and the resulting vapors of impurity elements having higher vapor pressure than indium pass through diffuser plates 12 in the upper part of tubular member 11 to be discharged from the system whereas the indium vapor recondenses upon contact with diffuser plates 12 and returns to liquid reservoir 9, yielding 99.9999% pure indium while preventing the loss of indium.

Abstract: A molten metal or molten metal alloy is filtered to remove contaminants. Filters may include imaging agents, especially those useful for N-ray radiography, X-ray analysis, and neutron activation. Currently preferred imaging agents include gadolinia and tungsten. Currently preferred refractory materials include yttria, zirconia, tantalum, tungsten and rhenium. A homogeneous distribution of refractory and imaging materials may be accomplished by vacuum impregnation, chemical vapor deposition, physical vapor deposition, chemical vapor infiltration, fusing, cocalcining, alloying, and physical mixing. Filters substantially resistant to chemical and mechanical degradation may be used. For example, filters may be constructed with at least an outer layer of the filter comprising yttria. Filters may define a porosity and mesh size for efficient filtration and to exclude the maximum allowed size of defects for the particular application.

Abstract: A ferrochrome alloy is produced from an ore or concentrate by smelting the ore or concentrate in the presence of a reductant which is a carbide alone or a carbide in combination with another reductant. The carbide is preferably silicon carbide.

Abstract: A Jar Opener includes a beam, a handle, a fixed jaw, and a movable jaw. The Jar Opener is able to securely clamp a jar lid between the fixed jaw and the movable jaw, and the beam and handle are then turned to open the jar. The Jar Opener functions as a lever arm to enable any user to easily open virtually any twist top jar.

Abstract: A multifunctional container opener for opening a plurality of different containers, including a body that supports a template defining one or more pockets and a pill splitting tool and one or more compartments or pockets for capturing pieces of the split pill or tablet. The body may also support a variety of tools adapted for opening a container or accessing a container's contents. Such tools include tools for piercing, scoring, cutting or prying portions of the actual container or safety seals associated with the container. The body also supports a gripping device for frictionally engaging the cap or top of a container.

Abstract: A hand-held power tool with improved means for inhibiting uncalled-for rotation of the output shaft that is relatively long-lived and self-compensating for wear. The tool comprises a housing, a braking member fixedly mounted in the housing and an output shaft mounted in the housing for rotation. The output shaft has an outer end portion projecting out from the housing for reception of an attachment for the tool. A ratchet wheel on the output shaft is adapted to be driven in one direction or the other. The ratchet wheel has a side face facing a first surface of a wear member (e.g., washer) and a plurality of recesses extending inward from the side face spaced at intervals. The wear member is keyed to the output shaft for conjoint rotation with the shaft.

Abstract: A ratchet wrench comprises a handle, which has a head at an end thereof. The head has a receive hole, a first chamber and a second chamber. A driving member is received in the receive hole of the head for free rotating. The driving member has a teeth portion at out surface thereof. A pawl has a teeth portion at a side thereof and a driven portion at the other side thereof. The pawl is received in the first chamber of the head with the teeth portion thereof meshing with the teeth portion of the driving member, and a switch device has a body and a turning piece. The body of the switch device is received in the second chamber of the head to be turned between a first position and a second position. The body disposes an elastic driving device thereon to be against the driven portion of the pawl and two shoulder portions at two sides of the elastic driving device respectively. Whereby when turns the switch device will drive the pawl to move to a side and the shoulder portion will be against the pawl.

Abstract: A wrench comprises a handle and a head extending from the handle. A peripheral wall defining a hole in the head includes a compartment. An annular groove is defined in an end of the peripheral wall defining the hole. The annular groove is partially coincident with the compartment. A pawl is slidably received in the compartment and biased to engage with a gear wheel in the hole. A switching member is partially mounted in the hole for moving the pawl when switching of the ratcheting direction is required. A retainer ring is partially engaged in an annular groove in the switching member and partially engaged in the annular groove of the head. The retainer ring is retained in place by a wall defining the compartment. The switching member is not moved when the pawl moves as a result of free rotation of the wrench.

Abstract: Wrench capable of preventing a screwed member from slipping out and holding the screwed member. One end of the wrench has a head section formed with a polygonal socket. Multiple teeth are formed on the circumference of the socket for engaging with the screwed member. An annular groove is formed in the head section and a resiliently stretchable retainer ring is disposed in the annular groove. An inner edge of the retainer ring protrudes into the socket to form a stopper section. When the socket is fitted onto the screwed member, the retainer ring serves to stop the screwed member from slipping out of the socket. Also, the retainer ring can be resiliently outward stretched from the annular groove to make the screwed member fitted into the retainer ring and held thereby.

Abstract: A lathe-cutting apparatus and a method with a structure of a chuck being simple, which are capable of lathe-cutting an eccentric part of a crankshaft with high accuracy are provided. For this purpose, the apparatus includes a supporting device (21) for supporting both end portions of a crankshaft (1), a rotational drive device (20) for rotating the crankshaft from at least one end side of the supporting device with a main journal (3) of the crankshaft as a center, and rotationally driving an eccentric part (2), a tool (31) for performing lathe-cutting of the eccentric part, and a cutting tool drive unit (30) for making a cutting edge position of the tool perform crank rotation synchronously with the rotation of the eccentric part which is rotationally driven by the rotational drive device, and performing lathe-cutting of the eccentric part.

Abstract: Disclosed herein is means for directly coupling main motor shaft to working machine with a coupling head as an intermediate component. By applying highly accurate precision machining technology. The machine unit assembled according to the present invention does not require recheck of dimensional deviation after completion of assembly. The present invention is applicable to both upright type and lateral type machine units.

Abstract: An improved collet assembly made adaptable for use in a computer numerical controlled (CNC) machine as well as in a non-CNC type of machine having one or more sub-spindles adaptably configured to accept and receive the collet assembly. The collet assembly generally comprising a collet body geometrically configured to accept and house a plunger assembly comprising a plunger cylinder integrally attached to a plunger rod having one end threadably attached to an ejector tip and a second end slidably engaged to a plunger retainer and fitted with biasing means, all of which serving as means to hold a workpiece during machining thereof and eject the workpiece from the collet body as biasing means advances forward within the collet body to a fully extended state.

Abstract: A cutting tool is provided, comprising a guide member with a channel, attached to a support arm. A body piece is also provided, and has an attached handle and cutting assembly. The body piece may be positioned at any point along the support arm, its cutting assembly thus being positionable to select a cut line such that a workpiece may be severed or scored at virtually any width desired. A method of cutting a sheet material is also provided, which employs the aforementioned cutting tool.

Abstract: The present invention relates to an apparatus for the automatic cutting of an element (50) made of elastomeric material, comprising: a rotary blade (11) having a continuous and curvilinear cutting profile, at least one cooling unit for cooling (16) said blade, a supporting structure (12) for supporting said blade, a feed device (14) for moving said supporting structure transversely relative to said element, a motor unit (15) for spinning said blade, and at least one structure (51) for supporting and feeding said element (50) to said blade. In accordance with the present invention, the ratio of the speed of rotation of said blade to the traversing speed of said feed device is between 10 and 40. Furthermore, said cooling unit (10) conveys cold air at least onto a radially outer portion of said blade, and at least one cutting surface on said blade, interacting, during the cut, with said element (50) of elastomeric material has non-stick properties.

Abstract: A reversible linear hydraulic drive system for a bidirectional supported shear having an adjustable stroke length. A method for improving the quality of the tube ends after shearing using a reversible partial orbital path is also disclosed.

Abstract: An object of the invention is to provide a blade for cutting a copper foil being capable of further decreasing the amount of slivers generated at the time of processing, e.g., cutting, punching, and perforating a copper foil and also capable of making the size of the slivers smaller. To achieve the purpose, a disk-like blade to be employed for a copper foil-slitting apparatus is coated with diamond-like carbon (DLC) or diamond-like carbon soft (DLC-soft) on at least a part to be brought into contact with a copper foil at the time of cutting. The coating reduces the unevenness of a blade surface, thereby providing a face being scarcely scratched with the copper foil. Subsequently, the amount of the slivers generated is remarkably decreased and the cutting property is improved.

Abstract: A rip guide setting tool for use in positioning and aligning elements of a table saw including the cutting blade and the rip fence or guide utilizing opposing arms of uniform length dimension pinned at their respective ends forming a parallelogram configuration which is adjustable to desired distances for achieving the alignment and positioning of the element or elements using one of the miter channels of the saw as an alignment reference.

Abstract: A support for a material web for use with a longitudinal cutting device for cutting the material web, includes a support shaft having an axis of rotation. At least one bearing mechanism positions the at least one support shaft, wherein the at least one bearing mechanism has an axis of rotation outside of the axis of rotation of the support shaft.

Abstract: A miter saw has a remotely actuated bevel angle locking system and a bevel angle adjustment assistance system with a remote override actuator so that the user does not need to reach around to the back of the miter saw to adjust the bevel angle. The remote actuator for the bevel angle locking system can be provided on the front of the miter saw's turntable to form a suite of actuators with the miter lock and miter detent override lever. The remote override actuator for the bevel angle adjustment assistance system can be provided on the handle in proximity to the power switch. Also disclosed is a bevel angle adjustment assistance system in which each of the preset bevel angles can be fine tuned simultaneously and which exhibits other advantages.

Abstract: An adjusting device for a table saw includes a pivot rod adapted to be longitudinally mounted under a tabletop of the table saw, a panel extending downward from the tabletop, a rotatable seat pivotally mounted on the pivot rod, a pivotal seat pivotally mounted on the rotatable seat, and a set of adjusting elements respectively mounted on the rotatable seat and the pivotal seat for adjusting a height and an angle of a saw blade of the table saw. The set of adjusting elements includes a threaded rod provided to precisely adjust the height of a saw blade and a gear provided to precisely adjust the angle of the saw blade of the table saw.

Abstract: A die-cutting device is herein disclosed for performing slots perpendicular to the feeding direction of paperboard sheets used for making boxes, which is mounted on a supporting framework which can be driven in a cross direction with respect to the longitudinal feeding direction of the paperboard sheets.

Abstract: This new and practical model of machine is a kind of multi-function and combined processing Machine for Carpentry. On the stock of this machine are installed two or more than two types of processing tools for carpentry. The standing pillar of the stock is connected with one end of the function-changing string, while the other end of the function-changing string is connected with the function-changing shift fork. Between the function-changing shift fork and the outer shell of the function-changing gearbox are installed reset springs. The function-changing gears can be installed in the main axle of the electric machine in a moving way, and the function-changing shift fork is inserted into the fork groove of the function-changing gears. By this way, the function-changing shift fork can push the function-changing gear to slide along the main axle of the electric machine and thereby link up with the transmission gears of different types of processing tools for carpentry.

Abstract: A cam gear punch has a simple structure and is capable of slowing down punching space and accelerating punching pressure. The punch has a punch mainframe which includes a motor to drive a transmission cam gear. The transmission cam gear engages with a driven cam gear which is mounted on a transmission shaft. The transmission shaft has one end pivotally mounting in the punch mainframe and another end coupling with the driven cam gear. An eccentric transmission wheel is mounted on the transmission shaft. The eccentric transmission wheel has one end engaging with a slide block.

Abstract: A music box includes a daisy reed wheel having reeds radially projecting from a hub for generating tones and solenoid-operated player's fingers arranged around the daisy reed wheel; the tips of the reeds are widely spaced from one another by virtue of the radial arrangement so that large-sized solenoid-operated actuators are used for the player's fingers; this results in the compact music box.

Abstract: A system for displaying music. An Internet server stores the music. A computer accesses the Internet server and downloads a particular musical composition. The computer stores the particular musical composition in a computer memory. A plurality of viewers is coupled to the computer. The computer retrieves, from the computer memory, the particular musical composition, and sends the particular musical composition to the plurality of viewers. The plurality of viewers displays the particular musical composition retrieved from the computer memory. The computer controls display of the particular musical composition on the plurality of viewers. Each viewer has a stylus. Each stylus is used for annotating the particular musical composition with annotations.

Abstract: Hindustani music is found to have an additional 22 thatas that can be scientifically and accurately computed. Together with the 10 thatas already identified, these newly identified and compiled thatas make a total 32 thatas. In a further aspect, a raag or melody is constructed by a combination of ascending and descending notes by selecting a thata, and computing a combination including at least 5 ascending or descending notes for the thata. Using this method, new raagas can be created using not only the existing 22 thatas, but also from the 22 newly discovered thatas. Further, new musical instruments can be constructed by applying the newly identified thatas. Students of music may be taught new tunes based on the 32 thatas.

Abstract: There is provided a musical tone generating apparatus that is capable of generating more natural musical tones even when musical tone waveform data is generated at a recording sampling frequency lower than a sampling frequency, by recovering harmonic components missing in the musical tone waveform data. All frequency components included in musical tone waveform data read out from a tone color data memory are shifted in a positive direction by a predetermined frequency lower than half the recording sampling frequency. The lower frequency components of the shifted frequency components than the half the recording sampling frequency are cut off by an HPF. The amplitude of the musical tone waveform data from which the frequency component is cut off is adjusted by a multiplier. Then, the musical tone waveform data adjusted in amplitude and the original musical tone waveform data read out are added together, and a musical tone is generated based on a result of the addition.

Abstract: A cannon barrel is a conic hollow barrel cast from metal and includes two ends of different inner diameters. One of the ends of the conic hollow barrel having a relatively smaller inner diameter is secured to a cradle. A shot fired through the barrel gradually spreads while passing through the barrel. The explosion/impact area of the shot is thus enlarged, which could hit the target more easily.

Abstract: Several ceramic armour systems are provided herein. One such system is a ceramic armour system for personnel. Such system includes an integral ceramic plate, or a plurality of interconnected ceramic components providing an integral plate. The ceramic has a deflecting front surface or a flat front surface, and a rear surface. A front spall layer is bonded to the front surface of the ceramic plate. A shock-absorbing layer is bonded to the rear surface of ceramic plate. A backing is bonded to the exposed face of the shock-absorbing layer. A second such system is a ceramic armour system for vehicles. Such system also includes an integral ceramic plate, or a plurality of interconnected ceramic components providing an integral plate. The ceramic plate has a deflecting front surface or a flat front surface, and a rear surface. A front spall layer is bonded to the front surface of the ceramic plate. A shock-absorbing layer is bonded to the rear surface of the ceramic plate.

Abstract: A firearm includes a moveable bolt assembly that absorbs energy associated with the discharge of the firearm. An energy absorbing mechanism within the bolt assembly may include a dampening spring that provides recoil energy dissipation. With this arrangement, one or more actuators may be provided that are operative to compress the dampening spring with respect to the bolt assembly in response to the discharge of the firearm.

Abstract: A first piston (22) of a first locking cylinder (20) descends when a pressure of compressed air in an actuation chamber (23) has exceeded a pressure for locking commencement (P1) and ascends by a first spring (24) when the pressure of the compressed air has decreased to a pressure for releasing commencement (P2). A second advancing and retreating cylinder (32) comprises an inlet chamber (41) and an outlet chamber (45) formed below and above a second piston (35), respectively, and a second spring (46). The actuation chamber (23) communicates with the outside air through the outlet chamber (45). A restricting passage (37) is provided in a route between the actuation chamber (23) and the outside air. The actuation chamber (23) communicates with one of the inlet chamber (41) and the outlet chamber (45) through a communication hole (62).

Abstract: A system and a method for separating interdispersed gas and liquid components of an inlet stream includes introducing the inlet steam into a vessel having a dry gas outlet and a liquid outlet, passing the inlet stream into at least one vortex tube supported within the vessel, the vortex tube having a gas outlet and a liquid outlet, rapidly rotating the inlet stream within the vortex tube to separate entrained liquid and passing reduced moisture outlet gas from the vortex tube into the interior of the vessel and passing the outlet gas through a mist eliminator within the vessel to provide gas that is passed out the vessel dry gas outlet.

Abstract: Method and apparatus for separating solid particles from gas exhausted from the reaction chamber of a fluidized bed reactor, the separator apparatus comprising a vortex chamber which is in horizontal direction defined by vertically-extending outer walls formed of planar water tube panels, the inside of the walls being at least partly provided with a refractory lining and defining a gas space in the vortex chamber, where at least one vertical gas vortex is established, at least one gas inlet, at least one gas outlet; and at least one solids outlet, in which apparatus the vertically-extending outer walls of the vortex chamber form at least one corner, the angle between the sides of which exceeds 90 degrees, the corner being rounded by a refractory lining on the inside of the outer walls.

Abstract: A portable room air cleaner including a frame; at least one motor connected to the frame; at least two rotatable axial flow fans connected to the at least one motor; and a filter connected to the frame. The fans are rotated by the motor to additively build static air pressure in series for entry of the air into the filter.

Abstract: A portable HEPA filter chamber is provided with a pair of wheels and a handle whereby it can be moved by a person in the manner of a two-wheeled hand-truck. One or more inlet openings receive air from an area to be cleaned, dried, or decontaminated. An air outlet is adaptable to the air inlet height of standard, widely-used carpet dryer blowers. Pre-filters are provided in the portable chamber upstream of the HEPA filter. Strapping holds the blower unit to the outlet of the filter chamber. Support wheels and a handle enable convenient hand-truck type operation to facilitate movement of the combination when and as needed in the area being dried. An upstanding perimeter flange, and the handle, when retracted, serve as a fence to stabilize multiple chambers, when stacked for storage or transportation in a truck. The exterior wall of the chamber is shaped for inter-fitting with others to minimize floor space for storage and transporting.

Abstract: The present invention relates to an air-cleaning device for air cleaning in sensitive environments such as operating rooms, drug manufacture, micro-chip production (processing industry) and similar areas.

Abstract: The object of this invention is to provide a technique of effectively purging a space almost closed with a master and pellicle film with inert gas in an exposure apparatus which uses ultraviolet rays as exposure light, purges the interior of the apparatus with inert gas, and projects the pattern of a master onto a photosensitive substrate via a projection optical system. To achieve this object, a plurality of vent holes are formed in a structure obtained by surrounding by a surrounding member a gas purge space to be purged with inert gas. A vessel which forms a space around the structure is filled with inert gas to cause inert gas to enter the gas purge space, purging the gas purge space with inert gas.

Abstract: Gas/liquid separating devices include a separator (1) for separating a mixed gas/liquid flow (M). A liquid drain (2) communicates with the separator and defines a liquid storage chamber (30). The liquid drain serves to temporarily store a liquid separated from the mixed flow within the liquid storage chamber, so that a space that is not occupied by the liquid is ensured within the liquid storage chamber. An adjusting mechanism (52, 152) may serve to adjust the pressure within the space of the liquid storage chamber.

Abstract: A wine press for use in particular, but not exclusively, for pressing grapes for producing champagne. It is horizontal and includes an open-work base and pressing mechanisms formed of at least an axially mobile tray. The pressing mechanisms have a configuration adapted, during pressing, to shape the marc cake into a block so that at least a portion thereof is cantilevered by the simple removal of one at least of the pressing mechanisms, so that the portion can collapse into the chamber of the press onto the open-work base.

Abstract: A method of maintaining temperature of a hot beverage in an urn with a self-heating urn (10) provided with heat packs (18) that are rapidly heated during the brewing process and then gradually release their heat to the brewed beverage within the urn after it is removed from the brewing location to a serving location at which electrical powered for heating is not available. The heat packs (18) are formed of ceramic materials, high density liquids, PCM's or the like which are capable of being rapidly heated during the brewing process but then gradually release their heat to the beverage in the urn. Alternatively, the warmer packs (18) are removably mounted within a compartment (68) within the self-heating urn (10) and are heated apart from the brewing process and then inserted into the self-heating urn (10) when it is moved to a serving location.

Abstract: An espresso machine provided with a rotating ceramic disk valve (1) as a selective water-steam distributor that is in a driving connection with a drive motor (2), and a control device (3) for controlling the drive motor (2). To increase the precision of the rotational-angle setting, a Geneva gear (4) is incorporated into the driving connection between the drive motor (2) and the rotating ceramic disk valve (1), with the gear setting the rotating ceramic disk valve (1) in make-and-break cycles. The control device (3) shuts off the drive motor (2) after at least one make-and-break cycle of the Geneva gear (4).

Abstract: The invention relates to a method for regulating a controlled atmosphere for the storage of plant products in at least one storage or transport room. The inventive method comprises the following steps: a) measuring, at at least two different intervals, the concentration of at least one trace gas that is produced by the plant products and whose share in the controlled atmosphere is less than 1%, b) deriving from the sequence of at least two measured values the degree of the change in concentration of the trace gas as a measure for the rate at which the plant product produces said trace gas, c) determining the adjustment values for the composition of the controlled atmosphere depending on the degree of the change in concentration of the trace gas, and d) adjusting the composition of the controlled atmosphere in accordance with the adjustment values.

Abstract: A method of manufacturing a fryer vat includes the step of welding together side portions and a main portion of a fryer vat, in which the step of welding includes the step of forming a plurality of vertical vat welds. Further, the step of forming includes the steps of applying a torch over a filler material for a period of time sufficient to melt the filler material, and deactivating the torch in order to allow the melted filler material to cool to a temperature sufficient to form a solid material. The method also includes the step of reapplying the torch over the vertical vat welds for a period of time sufficient to remelt only a portion of the vertical vat welds.

Abstract: A combination grill and food smoker having a dual smoker chamber configuration in fluid or vented communication with the grilling chamber of a grill, wherein the dual smoker chamber configuration functions in association with a generally centrally disposed smoke stack and a smoker particle smoldering rate regulatory means to ensure even dispersion of heat and smoke throughout the grilling chamber of a grill for even cooking and flavoring of meats, fish, vegetables, or the like, therein.

Abstract: The machine comprises a pair of risers (12) and a head (13) comprising a plurality of operating roller units (15.1, 15.2, 15.3) with roller supported on the top and between said risers. According to the invention, said machine comprises a cover (14) pivotally mounted by means of a pin (14.1) with respect to said risers (12) and over said head (13) so to at least cover the gap on the top and on the front between the risers (12), in which said operating units are arranged, in its closed position. Cam means (16, 16.1) are functionally associated to said cover (14) and cam tracker means (17, 17.1) are functionally associated to a micro switch (18).

Abstract: A food handling apparatus (10) has a support member such as an ope net (12) for supporting a food product and allowing fluid such as meat juices, cooking water, etc. to pass therethrough. Flexible handles (16) extend from opposite ends of the net to allow a user to lift the food product when supported in the net.

Abstract: Wide nip calender arrangement and process for glazing a paper or cardboard web that includes a back pressure surface, a support shoe arrangement, and a circulating jacket loaded by the support shoe arrangement in a direction of the back pressure surface to form a wide nip. A moistening device is arranged before, relative to a web travel direction, an intake to the wide nip, and a calibration nip is arranged behind, relative to a web travel direction, a discharge from the wide nip. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A microporous stencil sheet for use in stencil printing and methods for making stencil master using this microporous stencil sheet are disclosed herein. The microporous stencil sheet is for use in stencil printing using a low-viscosity ink with a viscosity ranging from 0.001 to 1 Pa•s, comprises an inelastic resin film and has an air permeability ranging from 1 to 600 seconds and a thickness ranging from 1 to 100 &mgr;m. The methods for making stencil master using this microporous stencil sheet comprise the step of closing the micropores of the stencil sheet in a non-printing portion of a desired printed image.