摘要:
The invention relates to melamine-formaldehyde condensates with thermoplastic properties that can be produced from formaldehyde and melamine derivatives, wherein at least one of the melamine derivatives organic radicals R have been used to substitute at least four of the total of six hydrogen atoms of the three melamine amino groups, and wherein the organic radicals R are mutually identical or different. The invention also relates to a process for production of the melamine-formaldehyde condensates, use thereof, and an analytical method for determining the constitution of the melamine-formaldehyde condensates.
摘要:
The invention relates to melamine-formaldehyde condensates with thermoplastic properties that can be produced from formaldehyde and melamine derivatives, wherein at least one of the melamine derivatives organic radicals R have been used to substitute at least four of the total of six hydrogen atoms of the three melamine amino groups, and wherein the organic radicals R are mutually identical or different. The invention also relates to a process for production of the melamine-formaldehyde condensates, use thereof, and an analytical method for determining the constitution of the melamine-formaldehyde condensates.
摘要:
Spectral, densitometric, or color measured values are detected on sheet printing materials during the printing process in a sheet-fed printing press. The measured values are determined on sheets as they are moving through the printing press and the measured values are used in real-time by a computer to control parameters for controlling the printing process in the sheet-fed printing press.
摘要:
A method for controlling inking during the printing process, in particular during the production run, in a printing press, the printing press having an imaging device coupled to a computing device operative for collecting image color measurement data from the imaging device, and numerically processing the image data, and in which color measurement data are obtained from printed images produced on an continuous basis, these data being used for control or regulation to influence image inking if a predetermined image color tolerance is exceeded, the method which comprises the steps of collecting the image color measurement data, over time using the image color measurement data for computing a color trend estimate; evaluating the color trend estimate and performing a corrective control of the inking if the color trend estimate data indicate that image coloring will move outside the allowable image color tolerance.
摘要:
The invention relates to a device for inspecting the image and measuring the color of at least one printed product produced by a printing machine with at least one printing group. The purpose of the present invention is to teach a device permitting the quality and color of printed products to be assessed. To do this, the device consists of at least one imaging device providing the image data of the printed product and a computer device, in which the computer device detects all the image data of the printed products for image inspection and determines a measurement color assessment from the image data of at least one measuring point of the printed product.
摘要:
The invention is directed to an arrangement for detecting the position of an accelerator pedal and/or a power-determining element of an internal combustion engine of a motor vehicle. The arrangement has at least two measuring devices as well as monitoring means which check the function of these measuring devices on the basis of the measuring signals thereof. In addition, a further measuring device in the form of a switch element is provided which likewise generates a signal representative of the position of an accelerator pedal and/or power-determining element of an internal combustion engine of a motor vehicle. A microcomputer selects on the basis of all three measuring signals at least one of the measuring signals for controlling the drive power of the engine in a motor vehicle. The switching element is a Hall switch.
摘要:
A control device of a driving engine which can be actuated purely mechanically, via a force transmission device or a control motor as needed, independently of a control position of the force transmission device in a direction of reduced output of the driving engine. The control device includes a restoring spring, a third driver element and a repose stop positioned away from the control device, in a final control element. The apparatus is particularly well-suited for motor vehicles equipped with traction control.
摘要:
A pressure fluid reservoir comprising a cylinder with a reservoir connection, a piston displaceable in the cylinder and non-contact switch means for indicating piston positions. Between the reservoir connection and the piston, the cylinder encloses a pressure fluid chamber, which is intended for storing a pressure fluid such as hydraulic oil, brake pressure fluid or the like. Opposite the pressure fluid chamber, the piston defines a gas chamber. The non-contact switch indicating means comprise Reed contacts, for example, and are disposed outside the cylinder such that they are longitudinally adjustable along the cylinder. Adjustment is effected by a temperature-dependent adjusting means, embodied for instance as an expansion element. Permanent-magnet actuating means, for actuating the Reed contacts in a non-contacting manner are fixed in recesses in one side of the piston. The adjusting means adjusts the Reed contacts longitudinally such that when these contacts are actuated, the same pressure (p1) in the pressure fluid chamber is indicated, regardless of the temperature of the fluid in the pressure fluid reservoir.
摘要:
A device for positioning a measuring head above a print substrate includes a display device and a motor-driven positioning device for the measuring head. The motor-driven positioning device for the measuring head is controllable by a computer connected to the display device. Measurement locations are selectable on the display device and the measuring head is positioned by the positioning device depending on the selected measurement locations.
摘要:
A method for controlling color in printing technology machines, includes measuring color measured values without/with a UV filter and converting them with a computer to color measured values measured with/without a UV filter. The color measured values measured without/with a UV filter are recorded by a color measurement instrument on a substrate. The spectral remission values of the substrate measured with and without a UV filter are supplied to the computer and the computer converts color measured values measured without/with a UV filter to color measured values measured with/without a UV filter taking into account these supplied spectral remission values of the substrate, and uses them to control the color in the printing technology machine. A printing technology machine having a computer for carrying out the method, is also provided.