摘要:
Determining a displacement of a substantially rigid item relative to a frame of reference between a first time and a second time is described. At the first time, a first set of pointwise measurements of a physical property of the item taken at a plurality of fixed locations relative to the frame of reference is acquired. At the second time, a second set of pointwise measurements of the physical property taken at the plurality of fixed locations is acquired. A first matrix derived from the first set of pointwise measurements is compared to a second matrix derived from the second set of pointwise measurements to determine the displacement.
摘要:
An imprint apparatus and method employ an effective pressure in imprint lithography. The imprint apparatus includes a compressible chamber that encloses an imprint mold having a mold pattern and a sample to be imprinted. The chamber is compressed to imprint the mold pattern on the sample. The mold is pressed against the sample with the effective pressure. The effective pressure is controlled by a selected ratio of a cavity area of the chamber to a contact area between the mold and the sample.
摘要:
A printer having a transparency film discrimination system is disclosed. The printer includes a feed mechanism, an illumination source, a detector, and a processor. Light from the illumination source is reflected on or transmitting through the print medium (such as a transparent film) and is detected by the detector. The detected light is analyzed to determine the type of the medium. If the determined type of the print medium is not acceptable for the printer, then control signal is provided to the printer to halt the printing process as to avoid damage to the printer.
摘要:
One embodiment of the invention is a capacitive sensor for sensing the amount of material in a container. This embodiment includes an oscillator that generates an oscillating signal. This oscillator includes an integrating amplifier that is formed by (1) an operational amplifier that has a low-impedance output and a virtually-grounded input, and (2) a capacitor that has a capacitance which depends on the amount of material in the container. The capacitor connects between the low impedance output and the virtually-grounded input of the operational amplifier In some embodiments, the operational amplifier includes a first amplifier and a second amplifier that are connected in series, with an output of the second amplifier fed back through the capacitor to the input of the first amplifier.
摘要:
A printer is provided with a transmit electrode and a receive electrode with a dry-toner cartridge located therebetween. The transmit and receive electrodes act as two plates of a capacitor, with the toner within the toner cartridge making up a portion of the dielectric between the two capacitor plates. An oscillating transmit signal is then applied to the transmit electrode, and a signal corresponding to the capacitance between the opposing electrodes is detected. The changing capacitance due to the changing toner quantity causes a change in the received signal. The value of the received signal is then converted into the quantity of toner residing between the opposing electrodes, and this quantity is displayed to the user. Arrangements of transmit and receive electrodes may be employed within the printer to not only sense the overall quantity of toner but the distribution of toner within the toner cartridge.
摘要:
An upright dustpan is disclosed which allows a user to open and close a door of a dust collecting compartment through a trigger on the handle. A trigger activates an actuating arm, which in turn causes the movement of an actuating pin that is connected to an external arm which opens the compartment door. The movement of the actuating pin may be lateral or rotational, providing different movement to the external arm.
摘要:
The invention provides a process for preparing expandable styrene polymers which comprises the steps of: (a) adding an aqueous phase comprising a suspension stabilizer and an organic phase comprising styrene and an initiator to a reactor, (b) commencing the addition of a blowing agent at a styrene conversion in the range from 40 to 70% and adding the blowing agent over a period ranging from 30 to 60 minutes, (c) adding a stabilizer to stabilize the bead size distribution of the expandable styrene polymer at a styrene conversion in the range from 65 to 99%.
摘要:
Disclosed are various embodiments of a navigation input device, and methods, systems and components corresponding thereto. According to some embodiments, the navigation input device has a large depth of field associated therewith and employs time- and/or frequency-domain processing algorithms and techniques. The device is capable of providing accurate and reliable information regarding the (X,Y) position of the device on a navigation surface as it is moved laterally thereatop and thereacross, notwithstanding changes in a vertical position of the device that occur during navigation and that do not exceed the depth of field of an imaging lens incorporated therein. According to one embodiment, the navigation input device is a writing instrument that does not require the use of an underlying touch screen, touch pad or active backplane to accurately and reliably record successive (X,Y) positions of the writing device as it is moved across and atop an underlying writing medium such as paper, a pad or a display.
摘要:
A contact lithography apparatus, system and method use a hydraulic deformation to facilitate pattern transfer. The apparatus, system and method include a spacer that provides a spaced apart proximal orientation of lithographic elements, and a hydraulic force member that provides the hydraulic deformation. One or more of the lithographic elements and the spacer is deformable, such that hydraulic deformation thereof facilitates the pattern transfer.
摘要:
Determining a dimensional change in a surface of an object is described. At a first time, a first image of the surface is acquired at a first spatial window thereon having a first known position relative to a frame of reference. At a second time, a second image of the surface is acquired at a second spatial window thereon having a second known position relative to the frame of reference. The first image and the second image are processed according to an image displacement sensing algorithm to determine a relative translation of a first point on the surface between the first and second times. The relative translation of the first point, the first known position, and the second known position are used to determine the dimensional change in the surface between the first and second times.