Tape Printer Research Articles

BUBBLE DYNAMICS AND ELUTRIATION STUDIES IN GAS-FLUID1ZED BEDS

In order to adequately interpret the heat and mass transfer data taken in a gas-fluidized bed, it is essential to know the bubble dynamics and solids movement in the bed, and solids elutriation from the bed. To generate information on these aspects, an experimental facility has been designed, fabricated and successfully tested. This consists of a two-dimensional fluidized bed with its gas supply and cleanup system. The bubble dynamics and solids projection from the bed are recorded by a high-speed movie camera. The films are analyzed on a photo-optical data analyser and digitizer provided with an electronic graphics calculator connected to tape printer and a Teletype terminal interfaced with a computer. The analysis of recorded bed dynamics suggests that for large particles the bubbles grow to be non-spherical and these rise almost above the bed surface before bursting when the wake remains intact while the solids bulge at the bubble nose ruptures to release the bubble gas. It is concluded unambiguously t...

An Automated Weighing and Analysis System for Growth and Feed Efficiency Studies

The development and application of an automated weighing and analysis system for growth and feed efficiency studies are described. The system consists of an electronic balance connected, via a BCD interface cable, to a portable desk-top computer. Integral features of the computer are a display, paper tape printer, and a cassette tape drive for programs and data storage, all of which are necessary for efficient data procurement. Twenty-four pens of chicks and the remaining feed can be weighed, with electronic weight transfer to the computer, and a comprehensive output of raw data, calculated results, and statistical analyses can be obtained in approximately 1 hr. No manual data entries or calculations are necessary after weighing has been initiated. The results of a chick growth and feed efficiency experiment are presented.

On the Photelectrical Method of the Printing Smoothness “Tape Printing Method”

This report presents the theoretical explanation for the Tape Printing Method. The “Duble Reflexion Theory” was proposed, and the formula described below was introduced for the Tape Printing contrast C1C1=1/1-G(x, n)G(x, n) is the numbers of index for the normal reflexion of lightbeams focused on the surface of adhesive tape.G(x, n)=1/2{tan2(ψ-x)/tan2(ψ+x)+sin2(ψ-x)/sin2(ψ+x)}n=sin x/sinψ“x” is the incidence angles of light beams. “n” is the refraction index of the adhesive tape.

On the New Photoelectrical Method for Printing Smoothness “Tape Printing Method.”

The measuring method and the quantative analysis of the tape printed patterns are described. The “Mean Signal Value” and “Mean Signal Density” are difined from the recorded signals of the Tape Printing Recorder. The “Mean Signal Value” and “Mean Signal Density” at high Tape Printing pressure, over 5.3 kg/cm, have good correlation to I.G.T. printing test for the five paper, newsprint, heavy coated paper and light coated paper. Then, we have proposed the new printability tester by using the tape printing method.

On the Photoelectrical Method of the Printing Smoothness “Tape Printing Method”.

This report described the microscopic studies on the Tape Printing Method directly comparing the TP patterns with the typical stripes observed in the commercial prints.It was observed that the TP pattern had good correlations with the commercial prints.

Study of Density Gradients in Certain Oil-in-Water Emulsions Using Multichannel Gamma Ray Analysis

Variations in the attenuation of the 0.084 MeV. total absorption gamma photopeak of 170Tm result when o/w emulsions exhibiting any separation (not necessarily visible) are placed in plastic parallel-sided containers and moved vertically between a radioactive source and a scintillation detector arranged horizontally. Slow raising or lowering of emulsion systems allows the making of an attenuation “map” of the system when data are accumulated using a multichannel analyzer in multiscale mode, and read out viu a tape printer. Curves showing log attenuation (and hence density) versus channel number, their first differences. and equations are presented.

On the New Photoelectrical Method of the Printing Smoothness. “Tape Printing Method”

This report described a new method of measuring the printing smoothness of papers.When the non-coloured and transparent adhesive tape is pressed on the paper surface and illuminated by the light with an incident angle of about 55° to normal of the surface, we can observe a characteristic pattern.This characteristic pattern, which represents the contact and non contact area of the surface to the adhesive tape, is correlated with the printing smoothness of paper.This method is named “Tape Printing Method ”.

A Dual Counter X-Ray Analyzer for the Rapid Quantitative Analysis of Two-Phase Systems

AbstractThe normal procedure for a quantitative measurement of two phases with an X-ray diffractoraeter is to scan or count the intensities of two diffraction peaks and then to calculate the ratio of the two phases using an appropriate equation. This paper will describe an improved method of quantitatively measuring two phases in a sample. The diffractometer, which was constructed by Philips Electronics Instruments, consists of two fixed scintillation counters mounted at the Seeman-Bohlin focusing positions for the two desired diffraction lines. Each counter is preceded by a lithium fluoride curved crystal monochromator. The output from each counter feeds to a separate sealer which can be arranged to gate both sealers at a preselected number of counts. At this point a tape printer prints out the counts for both sealers. These counts are then related to the proportions of each phase present by an appropriate equation. Most of the electronics are solid-state designs. This paper will describe the instrumentation and show how it can be used to measure rapidly and precisely the ratio of anatase to rutile in a titanium dioxide system. The savings in time over the conventional method can be as much as 100 to 1.

An Automated System for Extended X-Ray Absorption Measurements

AbstractIn the study of X-ray absorption fine structure, one is faced with the task of measuring sample absorbance over an extended wavelength region. For the sake of accuracy, these measurements are often carried out on a fixed-count basis. Manual collection of the data at a hundred or more spectrometer settings is a tedious and time-consuming chore. This paper describes an automated system for accumulating absorption data.The equipment is used in conjunction with a Philips wide-range goniometer employed as a single-crystal spectrometer. It consists of: (1) a four-position sample changer, (2) a fixed-count selector for each sample position, (3) a five-digit counter and paper tape printer which register and record sample identification and counting times based on a 60-cps clock frequency, and (4) a programmer. The spectrometer advance is accomplished using the Philips step-scan arrangement. An IBM 7094 FORTRAN program for data reduction and computation will be described. The possibility of using X-ray absorption fine-structure measurements as a quantitative method for determining the various absorbing species will be discussed.

A method for obtaining a frequency distribution of brain waves

A new automatic, electronic method is described for obtaining the frequency distribution of random frequency bio-electric activity. It consists of translating the critical rise times of the biopotentials into pulses. These pulses are presented directly to the computer for average transients (CAT 400A) operating in the HISTOGRAM mode. Following the attainment of an adequate number of counts (this adequacy is entirely dependent on the primary data) the data is displayed by analog or digital techniques (CRO, X-Y recorder, tape printer etc.).

Tape-to-page translator

IN A REPERFORATOR switching telegraph system all messages allowed to enter the system are in the form required for tape printer operation. Certain tie-line patrons' offices are equipped with page teleprinters, which are un-suited to record messages prepared for tape teleprinter reception. The tape-to-page translator permits the extension of switching methods to the delivery of telegrams to patrons' offices equipped with page teleprinters.

Tape Printing Boards Revised

Tape Printing Boards Revised