摘要:
The invention relates to an aligning device (10) for individual sheet (12) alignment. The alignment device (10) comprises a sensor device (22, 24, 26, 28), a delivery device (18), and a transport device (14) located downstream from the delivery device in the direction of conveyance of the sheet (12). In order to align the sheet (12) the sensor device (22, 24, 26, 28) detects the side end of the sheet so that its position can be determined in relation to a desired printing position. The transport device (14) holding the sheet (12) is shifted in relation to the direction (16) in which the sheet (12) is conveyed so that the sheet (12) can be moved into the desired printing position. Before the sheet (12) is aligned the delivery device (18), which feeds the sheet (12) to the transport device (14), is opened.
摘要:
A detachable coupling is provided for transmitting mechanical rotation from a driving shaft to a driven shaft which extend substantially coaxially with one another. A spring apparatus is provided in the detachable coupling which acts axially and is rigid in the direction of rotation. The spring apparatus presses wedge-shaped catch slots of the detachable coupling in an axial direction against catch pins in the shafts.
摘要:
A printer is provided with two similar printing units fed with sheet-like material via a common input section. Printed material is output via a common output section. Groups of transport rollers and individual transport rollers are driven by step motors.
摘要:
To activate a processing device which processes a surface of a moving work piece at regular intervals, wherein a predetermined time duration passes between an activation signal of the processing device and the processing on the surface, the movement of the work piece is sensed with a sensor that generates work pulses. A respective control pulse is generated if a predetermined number of work pulses has been generated. A number of the work pulses is repeatedly detected in a respective time interval that corresponds to the predetermined time duration. The activation signals are each generated at each control pulse of a series, and the activation signals are offset forward in time relative to the respective control pulse corresponding to the number of work pulses that have been detected in the respective time interval. The activation signals are output to the processing device.
摘要:
In a method for printing a recording medium, an object type of image elements to be printed is determined for a corresponding print page using digital data. In generation of a bitmap for generation of a latent image for a first print process or a second print process, dependent on the object type image points are adapted in a direction of at least one main axis corresponding to an expected shrinkage. The recording medium is printed with a first toner image in the first print process. The first toner image is fixed on the recording medium in a fixing device where the recording medium shrinks along said at least one main axis. In the second print process, a second toner image is applied on the same recording medium in the direction of the main axis in a form compressed relative to that of the first print process.
摘要:
In a method to execute a pause function in an inkjet printing system with at least one printing apparatus, the pause function is triggered to reduce a feed speed of the printing substrate web from a speed during printing operation to a predetermined speed for a predetermined duration. The duration is selected so that the printing substrate has suitable properties with regard to at least one of the elements selected from the group consisting of moisture and temperature under the printing unit of the printing apparatus at an end of the pause function. After ending the pause function, the printing substrate web is accelerated again to the speed during the printing operation.
摘要:
In a method to execute a pause in an ink printing system printing operation in which a printing substrate web is printed with print bars having print heads, with aid of a take-up roller moving the printing substrate web at printing speed past the print bars in a transfer printing zone in order to generate print images. Upon triggering the pause, a strain state of the printing substrate web is measured at a beginning of the pause and stored as a desired strain state. During the pause, the strain state of the printing substrate web is measured as a real strain state at selectable points in time, and the real strain state is compared with desired strain state. Given a deviation of the real strain state from the desired strain state, at the selectable points in time the take-up roller is controlled so that the strain state of the printing substrate web assumes the desired strain state at the beginning of the pause. After an end of the pause, the printing substrate web is transported with the take-up roller at the printing speed again.
摘要:
In a method to execute a pause in an ink printing system printing operation in which a printing substrate web is printed with print bars having print heads, with aid of a take-up roller moving the printing substrate web at printing speed past the print bars in a transfer printing zone in order to generate print images. Upon triggering the pause, a strain state of the printing substrate web is measured at a beginning of the pause and stored as a desired strain state. During the pause, the strain state of the printing substrate web is measured as a real strain state at selectable points in time, and the real strain state is compared with desired strain state. Given a deviation of the real strain state from the desired strain state, at the selectable points in time the take-up roller is controlled so that the strain state of the printing substrate web assumes the desired strain state at the beginning of the pause. After an end of the pause, the printing substrate web is transported with the take-up roller at the printing speed again.
摘要:
In a method for printing a recording medium, an object type of image elements to be printed is determined for a corresponding print page using digital data. In generation of a bitmap for generation of a latent image for a first print process or a second print process, dependent on the object type image points are adapted in a direction of at least one main axis corresponding to an expected shrinkage. The recording medium is printed with a first toner image in a first print process. The first toner image is fixed on the recording medium in the fixing device where the recording medium shrinks along said at least one main axis. In the second print process, a second toner image is applied on the same recording medium in the direction of the main axis in a form compressed relative to that of the first print process.
摘要:
A printer or copier has a developer station which uses a developer mix such as tone and developer. A temperature sensor is provided in the developer station to sense the temperature of the developer mix. The signal of the temperature sensor is fed to a control unit which effects a control of the copier or printer operation, such as by halting operation, effecting cooling, or triggering a warning signal when the temperature reaches an upper boundary.