摘要:
Inkjet printheads capable of printing smaller and larger drop-weight quantities of ink, and methods of manufacturing the inkjet printheads, are disclosed. The inkjet printhead includes a substrate. One or more portions of the substrate may be etched such that the substrate might have different thicknesses. A thin-film layer is connected to the substrate and contains independently addressable ink-energizing elements, preferably resistors. An orifice layer having a substantially planar exterior surface is applied directly to the thin-film layer. Consequently, the thickness of the orifice layer varies with the thickness of the substrate. At least one firing chamber is defined in each portion of the orifice layer with a different thickness and, preferably, different-sized resistors. Alternatively, the orifice layer has a substantially uniform thickness. In order to achieve the multiple drop-weight capability of the present invention, firing chambers of different volumes are provided. In this embodiment, firing chambers that are to provide a larger drop-weight preferably have a more powerful ink-energizing element and are laterally offset from the firing chamber nozzle aperture. Other firing chambers that are to provide a small drop-weight preferably have a less powerful ink-energizing element and are aligned with the firing chamber nozzle aperture. Thus, the present invention provides inkjet printheads capable of printing various drop-weight quantities of ink.
摘要:
The invention is a fluid ejection device, such as a printhead, that has a substrate with a first surface mating to an orifice layer, preferably through a stack of thin-film layers. The orifice layer defines a fluid chamber interfacing to an orifice opening or nozzle. The substrate has a second surface having a truncated pyramidal structure; either polyhedral or triangular ridge shaped defining an opening through the substrate to the fluid chamber. The substrate further has an ejection element, preferably disposed as a resistor in the stack of thin-film layers. When energy is transferred from the ejection element to the fluid in the fluid chamber, fluid is ejected from the orifice opening. The fluid ejection device may have one or a plurality of fluid chambers and one or a plurality of frustums of a truncated polyhedral, truncated pyramidal, truncated conical or truncated triangular cross-sectional ridge structures defining openings from the second surface of the substrate to the fluid chambers.
摘要:
An inkjet printer printhead utilizes a substrate, an orifice layer, and a directionally biased electrostrictive polymer ink actuator disposed between the orifice layer and the substrate to eject ink from the printhead. The electrostrictive polymer ink actuator has a passivation layer disposed on the substrate, a first compliant electrode disposed at least on a first portion of the passivation layer, an electrostrictive polymer membrane disposed on a first area of the first compliant electrode, a passivation constraint disposed on a second portion of the passivation layer and a second area of the first compliant electrode effectively surrounding, in contact with, but not covering the electrostrictive polymer membrane in the first area of the first compliant electrode, and a second compliant electrode disposed on the passivation constraint which is disposed on the second portion of the passivation layer and the electrostrictive polymer membrane which is disposed on the first area of the first compliant electrode.
摘要:
A DNA fragment or a restriction enzyme-digested DNA fragment, the DNA fragment containing a gene, acyA, encoding a 3-acylation enzyme for macrolide antibiotics, characterized by being derived from a strain belonging to the genus Streptomyces, having a size of about 1.8 kb or about 3.2 kb, and having a DNA base sequence shown in a restriction enzyme map shown in FIG. 1(A) or FIG. 1(B), respectively, in the attached drawing. 3-Acylated macrolide antibiotics can be produced advantageously using macrolide antibiotics-producing bacteria transformed with vector plasmids having inserted therein the DNA fragment.
摘要:
An image processing apparatus is composed of an image memory comprising a plurality of memory elements, and a processor unit comprising a plurality of processor elements. By suitably engineering the arrangement of the image memory of memory elements, the arrangement of the processor unit of processor elements and the connections among the memory elements and processor elements, it is possible to realize, through a simple construction, high-speed image processing such as image density conversion, image color conversion, image masking, image spatial filtering, image enlargement, image reduction, image rotation, image compression, image extension and image color correction. Also provided are an image processing apparatus for a color image, composed of a plurality of image memories and a plurality of processor elements, and a generalized, multifunctional data parallel processing apparatus capable of processing a large volume of data at high speed.
摘要:
There are image processing method and apparatus for use in digital copying apparatuses, facsimile apparatuses, etc. which handle an image signal. This apparatus comprises an edge detector to detect the edge portion of the image signal, a smoothing circuit to smooth the image signal, an edge emphasizer to emphasize the edge of the image signal, and a mixer to mix the output of the smoothing circuit and the output of the edge emphasizer. A mixture ratio of the output of the smoothing circuit and the output of the edge emphasizer is varied in response to the output of the edge detector. The edge detection of the edge detector is performed due to the linear differentiation. With this apparatus, the moire in the case of a mesh original image is removed and the characters and line drawings can be reproduced with a high degree of fidelity.
摘要:
A color image sensor has a plurality of sensor parts aligned in line and the sensor parts are a plurality of sensor chips with filters of a plurality of colors and arranged in line. In this sensor, one of the sensor parts which corresponds to one of the plurality of colors and which influences resolution only to a small extent is omitted at a junction between adjacent ones of the sensor chips. Alternatively, in this sensor, sensor parts with a plurality of filters having a relatively high transmittance, among the filters of the plurality of colors, are alternately arranged to constitute a first sensor row, and sensor parts with filters having a relatively low transmittance are arranged in line to constitute a second row. The second row is parallel to the first row. Each sensor part constituting the second row is larger than that constituting first row.
摘要:
An image processing apparatus comprises an input device for inputting an image data, a first converter circuit for converting the input image signal to an analog image output and a second converter circuit for converting the input image data to a digital image output. The first converter circuit controls the analog image output in accordance with the output of the second converter circuit. The second converter circuit produces different digital signals in accordance with the input image data and has a threshold matrix to be compared with the input image data.
摘要:
An image processing apparatus has a memory for storing codes representing types of input image data and a comparator for selecting one of a number of threshold patterns in accordance with the code and comparing the input data with the selected threshold pattern to produce an image signal.
摘要:
An image processing apparatus has an input section for converting input image information into a luminance signal, a memory to store the digitized luminance signal, a central processing unit for determining the matrix size for each picture element of the input image information so as to allow output of high space frequency components of input image information with matrices of small size and low space frequency components with matrices of large size, an outline emphasis circuit for emphasizing the outline when the image information is output with matrices of large size, and an output section for recording or displaying the input image information. Halftone images of excellent resolution and gradation can be output with a small memory capacity.