| 摘要 |
A method and device for feeding sheets (2) to a user machine (4), whereby the sheets (2), arranged in a stack (13) along a channel (6) having a substantially horizontal longitudinal axis (7), are fed to a single-sheet pickup member (3) by dividing the stack (13) into an output portion (16), an intermediate portion (17), and an input portion (18); pushing the output portion (16) towards the pickup member (3) at a given constant first pressure (P2); compressing the input portion (18) at a given second pressure (P1); transferring sheets (2) from the intermediate portion (17) to the output portion (16) to compensate for the withdrawn sheets (2) and keep a length (D) of the output portion (16) substantially constant and equal to a given value; and transferring sheets (2) from the input portion (18) to the intermediate portion (17) to keep the density of the sheets (2) along the intermediate portion (17) substantially constant and equal to a given value.
|
