摘要:
The present invention includes a method for the collection of a profile of a printing press during a production press run. The method includes printing a colorbar onto a web during a production press run and measuring the color of a plurality of the color patches within the colorbar to provide a profile of the press. In designing the colorbar, several factors are considered. Exemplary design factors include the need to sample the entire ink color gamut, the need for landmark patches for each ribbon of the web for quality control and diagnostic purposes, the desire for contiguous patches to be dissimilar in reflectance, and the handling of webs with narrow widths. The press profile also includes press data such as time, date, paper type, ink formulation, ink temperatures, ink viscosity, customer, press identifier, and the like. By acquiring press profiles during production runs of the press, profiles can be obtained inexpensively and under numerous printing conditions.
摘要:
The present invention relates generally to the field of printing presses, and specifically to a method and apparatus for visually inspecting a web moving on a printing press using a CMOS based image recording device and preferably a LED light source. The LED light source includes at least two colors of light, such as white and blue, for highlighting various ink colors with respect to the web.
摘要:
An adaptive control system is intended for use in conjunction with a printing press to control the setting of an ink control device that regulates the amount of ink applied to a substrate. The control system includes a controller for calculating a new setting for the ink control device based on a measured ink color value and a target ink color value. The controller has at least one gain parameter. The control system also includes a sensitivity adapter in communication with the controller. The sensitivity adapter modifies the gain parameter in response to the sensitivity of the ink control device to a correction in setting issued by the controller. The control system operates so that a measured ink color value on the substrate converges toward a target ink color value.
摘要:
A method for simulating one of a plurality of web-up configurations for a press line in order to provide web length information associated with the selected web-up configuration (32) to a product tracking system (16). The method includes providing a drawing of a press line on a touch screen (24) and pulling a virtual web through the drawing to illustrate a selected web-up configuration (32). Web length information is calculated based on the selected web-up configuration (32) and is communicated to the product tracking system (16).
摘要:
An ink supply system (10) for ink jet printers, the ink supply system including a closed ink supply tank (11) for containing ink and solvent, a condenser (32) to cool air from a tube, and a tube (26) having connected to the air space of the ink supply tank (11) and the condenser such that air containing evaporated solvent from the tube is cooled by the condenser (32) such that solvent in the air will condense. Preferably, the condenser (32) is positioned above the ink supply tank (11) so that condensed solvent drains into the ink supply tank. Preferably, a solvent make up container (16) is connected to the ink supply tank (11) for supplying solvent to the ink supply tank, and an equalizing conduit connects the solvent make up container (16) airspace to one of the ink supply tank airspace and the tube to provide for equalization of the fluid pressure between the solvent make up container (16) and the ink supply tank (11). Preferably, a solvent supply device (20) supplies solvent to the solvent make up container (16). The solvent supply device includes a solvent supply container (21) for containing solvent, a support device for supporting the solvent supply container and a conduit connecting the solvent supply container (21) to the solvent make up container (16) such that solvent can be supplied to the solvent make up container (16) from the solvent supply container (21) without venting the solvent make up container to the atmosphere. Also, a solvent recovery system for recovery of solvent contained in solvent containing liquids is provided.
摘要:
An apparatus for applying covers to books of signatures (32) transported along a binding line includes cover feeders for feeding at least two covers (42a,42b) upon a conveyor line and a fastening arrangement for joining the covers in substantially superimposed registration on the signatures at a covering station (20) on the binding line (15). A spacer bar (60) is supported on the conveyor line for temporarily separating the covers before they are joined to the signatures.
摘要:
Un système de commande de coupe, dont la plage de prise est égale à la longueur de l'image (signature), présente une grande tolérance aux phénomènes transitoires parasites, tels que les déplacements latéraux et les interruptions instantanées de la bande. Une unité de corrélation machine à pipeline dense, coopérant avec plusieurs dispositifs de mémoire à accès sélectif (RAM) rapides comportant des générateurs d'adresses indépendants, est utilisée pour effectuer la corrélation croisée de nouveaux modèles avec un modèle de référence. Un système illustré, destiné à mettre en rapport l'exécution cyclique des opérations de la machine avec la position des images sur une bande, comprend des organes (24, 30, 84) de réglage de la position qui réagissent à des signaux de commande afin de faire varier la position effective de l'exécution des opérations de la machine le long de la bande mobile, des organes (34, 40, 50) destinés à produire des signatures d'image qui indiquent l'image à des intervalles d'échantillonnage respectifs durant le cycle d'exécution des opérations de concordance pour des cycles de machine respectifs, des organes (56, 58, 68, 69, 72) destinés à produire sélectivement des repères de modèle de référence à partir d'une première signature d'image et des repères comparatifs à partir d'une signature d'image successive, un organe (71) destiné à produire des coefficients de corrélation en fonction des différences entre le modèle de référence et des versions déplacées par rapport aux repères comparatifs des organes (68, 69, 70) destinés à traiter les coefficients de corrélation afin de déterminer lequel des repères comparatifs a produit le coefficient de corrélation le plus élevé et à produire un signal indicateur répondant audit coefficient, ainsi qu'un organe (80) servant à produire les signaux de commande destinés à l'organe de réglage de la position en fonction du signal indicateur.