Printing Control Research Articles

SPECIES: A spreadsheet program for modeling speciation of soil solution

SPECIES: A spreadsheet program for modeling speciation of soil solution

Printer controller ICs take on PDL bottlenecks : R WILSON Comput. Des. (USA), vol. 27, no. 13, pp. 26, 28, 30 (July 1988)

Printer controller ICs take on PDL bottlenecks : R WILSON Comput. Des. (USA), vol. 27, no. 13, pp. 26, 28, 30 (July 1988)

Image processing and page presentation: part 5

This final instalment covers present generation printers and includes a description of printer control languages, particularly Postscript, and colour printers. The concluding section is about the use of image processing in libraries as embodied in page preservation systems, facsimile—which has had a long chequered career—Desktop Publishing, with some examples of the kind of work being done in libraries, and Compact Discs.

Not for Novices

Even with the advent of artificial intelligence, windowing software, and user‐friendly pop‐up menus, most microcomputer users are eventually confronted with…(theme from Jaws) …hexadecimal codes. These creatures (also known as hex codes) are often found in connection with printer and communications control and screen display characters. What are hex codes and what are they good for?

Not for Novices

In the last issue, we explored several techniques for transmitting printer control commands from an IBM PC/XT or M300 Workstation to the system printer. These commands are simply sequences of characters that turn special print modes—compressed, emphasized, etc.,—on and off. Recently, an additional technique, which works on Epson, IBM, and Epson‐compatible dot matrix printers, has come to light. If you have some other type of printer, you may also want to try it to see what happens.

Electrophotographic Printer Control as Embodied in the IBM 3800 Printing Subsystem Models 3 and 8

Control of the IBM 3800 Models 3 and 8 electrophotographic printers is achieved by use of a fundamentally different control system than was used in their predecessors, the Models 1 and 2. As a result, printing of composed pages or electronic overlays can include text of many different font sizes and styles printed in multiple orientations, as well as raster images up to a full page in size. The printers manage stored resources, including fonts, segments of pages, and electronic overlays. Pages are composed inside the printers in a logical sequence, instead of by the more traditional line-by-line sequence. This, as well as the capability to position text and images at any addressable point, enhances usability. A high-speed, table-driven character generator, a new command set, and a microcoded control unit make all of this possible.

Microcomputer Printer Control Unit

A new type of control unit for film printing machines has been developed by Rank Film Laboratories. It provides a new approach to the operation of printing machines with greater efficiency for typical printing procedures and a lower incidence of operator error and machine failure. The unit is based on a 16-bit, 64-kbyte microcomputer. It is designed and constructed in logical modules and features extensive self-testing capabilities. This article describes the design, functions, and layout of the printer control unit.

Printer Control by Means of Calculated Trimmer Corrections

The trimmer changes required to compensate for variations in processing or print film batches can be calculated from measured differences in density between a test print and the laboratory standard. To obtain reliable trimmer corrections, a method is given here which takes into consideration the relation between density and trimmer changes as a function of density of the print. All calculations can be done with a programmable pocket calculator.

Computerized Process and Printer Control Part II: Printer Control

Computerized Process and Printer Control Part II: Printer Control

Computerized Process and Printer Control: Part I: Color Positive Developing Control and Printer Tape Preparation

An assessment of color positive developing is made by analyzing a Ib gamma strip read on an automatic recording densitometer. The output of the densitometer is fed to a minicomputer through an analog-to-digital converter. The interpretation of the computer output is typed out as full instructions on a teletypewriter giving a decision as to whether the process is normal or abnormal and, if abnormal, it lists probable cause and corrective action to be taken. A further use of the computer is correcting printer punched-tape programs, which is a valued aid in timing color prints.

Photometer for Color Printers

The color photometer for printer control applications has a compact probe fitting into the jaw of Bell & Howell and Peterson printers. It has an adapter for use with optical printers; and it uses selenium photovoltaic cells, selected for minimum fatigue. The position of a five-aperture filter slide is indicated by a coded disc. Readings are taken either with portable microammeters or with meters mounted on the printer.

New Instruments for X-Ray Analysis

AbstractNew Instruments for X-ray or neutron diffraction or for analyses by X-ray spectrographic methods are described. They incorporate a variety of new features which open a broad new scope of experimental techniques to the investigator. The diffractometer can be used with the diffraction plane either horizontal or vertical. The X-ray tube is conveniently supported by the diffractometer, allowing one to adjust the take-off angle from 0 to 10° without disturbing the precise alignment of the instrument. The 2θ angle bisecting mechanism functions throughout a 360° range and allows independent rotation (ω) of the specimen about the common axis. It is designed specifically for fully automatic remotely programed operation in addition to the usual manual modes.The constant-potential generator is rated up to 50 ma at 50 kvcp and up to 40 ma at 60 kvcp, A monitor-type switch selects combinations of kilovolts and milliamperes in a manner such that exact reproducibility of settings is assured.The dual-function strip-chart recorder incorporates both linear and three-cycle logarithmic slide wires so that each uses the output from the same linear rate meter.The Integrated Radiation Analyzer consists of a pulse-height analyzer, electronic timer, high-speed sealer, precision linear ratemeter, power supply, printer, and diffractometer control. Integration of these components has made possible unique programing for X-ray analysis.

16mm Color Intermediate Negative-Positive Printing Procedures and Controls

Printing procedures and control techniques using an additive printer in the production of 16mm color positive prints from 16mm reversal color film are described. Matrix algebra is used in determining a basic exposure for each emulsion type and number used. These matrices can be used for initial printer calibration as well as for routine printer control.

Printer Control in Color Printing

Printer Control in Color Printing