摘要:
A device for holding substrates on a printing-press transport belt successively transporting the substrates closely past an impression cylinder includes at least one stripping device disposed in an exit part of a nip between the impression cylinder and the transport belt, the at least one stripping device being movable in synchronism with a printing-press cycle towards and away from the impression cylinder; and a method of operating the device.
摘要:
The invention relates to a sheet-fed rotary printing machine comprising sheet-transfer drums disposed between the printing units. Sheet-guiding plates are assigned to the sheet-transfer drums, and the sheet-guiding plates extend over the length of a respective sheet-transfer drum. The sheet-guiding plates are disposed so that measurements may be taken on the printed sheet being moved.
摘要:
Housing for an electrical system for controlling operations includes a housing wall, at least one connection arrangement provided at the housing wall for connecting a control circuit disposed inside the housing to circuits located outside the housing, and a base forming a unitary body with the housing, the connection arrangement including contact members forming a non-detachable part of the housing wall, the control circuit disposed inside the housing being directly connected to the contact members.
摘要:
Method of automatically controlling and regulating a chronological sequence of operations of a printing press includes initializing in RAM of a computer a list entered from ROM and having a table of all press operation data necessary for printing, including an assignment of times for actuating actuators to position data of the printing carrier, modifying the data entered into the list in accordance with data regarding the machine status, and with respect to process values relative to a position of the printing carrier at which a performance of an operation should start, a first press operation to be performed being defined and, included in the data for every operation is the operation to be performed preceding and subsequent thereto and, upon reaching a starting position of each actual operation to be performed in accordance with actual data from the speed sensor, with the data about the machine status and with the process values, and redetermining in the computer and entering into the list the data for the position at the start of the performance of the actual operation, and the data for the operation preceding and subsequent to the actual operation, and if a shifting of the performance sequence is necessary, redetermining the data of the future preceding and subsequent operations. If the redetermined position chronologically comes after the starting position, the respective operation skipped in the performance sequence, and if the redetermined position chronologically comes before the starting position, the respective operation is performed from the starting position.
摘要:
Method of controlling a start-up of paper travel and printing, respectively, in a printing press having an electrically operated dryer for printing products printed with ink curable by drying, the dryer being preheatable over a limited time period, includes switching-on a drive for effecting paper travel and printing, respectively, after the dryer, which has been switched on beforehand, has reached a limit value representing optimum operating conditions.
摘要:
A control system for a printing press includes inputting into a central control apparatus to which a plurality of printing presses are connected data required for controlling a given printing press for a given printing job, and transmitting the data from the central control apparatus to a control device assigned to the given printing press.
摘要:
The invention relates to a protective device for offset rotary printing machines, in particular for printing units of sheet-fed rotary printing machines, with a sheet-like protective covering of the danger points, which is designed in such a way that sound protection for the printing units is achieved without adversely affecting easy accessibility for adjustment setting and service purposes.
摘要:
A process for setting a production run ink zone profile on an offset printing press. Initially, an ink zone profile is established which is the reverse of the desired ink zone profile, and, thereafter, this reverse ink profile is switched over to the ink profile actually desired.
摘要:
A device for drying printed products in a printing machine having a transport device for conveying printed products along a given path includes a radiation device located outside the printing machine for generating radiant energy, and a device for transmitting the radiant energy generated by the radiation device to a surface of the printed product, the transmitting device being disposed at least partly in the printing machine so as to direct the radiant energy simultaneously over a defined width of the surface of the printed product.
摘要:
Control arrangement for an electric motor having a control arrangement which, in accordance with at least one nominal value fed thereto, controls at least one power control element to be connected to an electrical network and the motor, including data transmission apparatus in the form of a computer device for applying to the control arrangement data received by the computer device from at least one of a device for determining the data and a memory wherein the data are stored.