bathroom vanity with sink,bathroom vanity units, double sink bathroom vanity,bathroom vanities near me Guangdong Planet Cabinetry Co., Ltd. , https://www.cnplanetcabinetry.com
Now, the speed of the offset press has increased rapidly, with a maximum printing speed of 15,000 sheets/hour. The speed of the machine is high, and its printing pressure must be increased accordingly. The reasons are:
1. In order to increase the pressure of printing, it is incompetent to make up for the shortcomings of imprints that are immature and empty due to imprinting time, in order to improve the robustness of imprinting.
2. The machine speed keeps increasing, and the drum radius must also decrease as the drum utilization factor increases. The small diameter of the roller, the compression width in the rolling process is also reduced accordingly, the compression width in the rolling process is also reduced accordingly, if not increase the printing pressure, it will also affect the transfer of ink.
Talking about the Effect of Printing Speed ​​on the Fixing Fastness of Imprinting
The printing speed of the offset press has an effect on the printing pressure and the imprinted fastness. Many examples show that as the printing speed increases, the printing pressure increases. This is due to the increase in the printing speed, which inevitably results in a corresponding decrease in the contact time between the corresponding points of the platen blanket. This reduction in time means that the degree of incomplete contact between printed surfaces increases, which is very dangerous. In order to effectively avoid the incomplete transfer of images and texts caused by incomplete contact between printed surfaces, inaccurate mesh and light gray inks, and incomplete fixation of blotting ink, a large printing pressure must be used. In this way, even if the ink can be quickly transferred from the ink-supply surface to the ink-accepting surface, the ink can be made to complete its ideal image transfer process in a relatively short period of time.