Sheet transferring device and image forming device
AssigneeRicoh Company, Ltd.
InventorToshihiro Isozaki
Life of this patent
Estimating the term…
Abstract
A sheet transferring device includes a feeding roller configured to feed a sheet; a transferring roller configured to transfer the sheet to the feeding roller; a sheet sensor configured to detect the sheet at a sheet transferring part from the transferring roller to the feeding roller; a measuring part configured to measure an interval of a rear end of a prior sheet and a head end of a following sheet based on a sheet detection signal of the sheet sensor; and a transferring control part configured to adjust a sheet transferring speed of the transferring roller so that the interval between the prior sheet and the following sheet is adjusted to a set value as corresponding to the interval measured by the measuring unit.
Claims5
A sheet transferring device, comprising:
- a feeding roller configured to feed a sheet;
- a transferring roller configured to transfer the sheet to the feeding roller;
- a sheet sensor configured to detect the sheet at a sheet transferring part from the transferring roller to the feeding roller;
- a measuring part configured to measure an interval between a rear end of a prior sheet and a head end of a following sheet passing through the sheet sensor;
- and
- a transferring control part configured to determine, using the interval measured by the measuring part, an amount of deviation of the interval between the prior sheet and the following sheet from a set value and adjust a sheet transferring speed of the transferring roller based on the determined amount of deviation,
- wherein the transferring control part adjusts a timing for stopping the transferring roller after the head end of the sheet transferred by the transferring roller reaches the feeding roller that is stopped, as corresponding to adjustment of the sheet transferring speed, so that a sheet length between the feeding roller and the transferring roller, when the transferring roller is stopped, is adjusted to the set value.
An image forming device, comprising:
- a sheet transferring device, the sheet transferring device, including:
- a feeding roller configured to feed a sheet,
- a transferring roller configured to transfer the sheet to the feeding roller,
- a sheet sensor configured to detect the sheet at a sheet transferring part from the transferring roller to the feeding roller,
- a measuring part configured to measure an interval between a rear end of a prior sheet and a head end of a following sheet passing through the sheet sensor, and
- a transferring control part configured to determine, using the interval measured by the measuring part, an amount of deviation of the interval between the prior sheet and the following sheet from a set value and adjust a sheet transferring speed of the transferring roller based on the determined amount of deviation;
- a sheet feeding tray configured to send out the sheet to the transferring roller;
- and
- an image forming part configured to form an image on the sheet sent by the feeding roller,
- wherein the transferring control part adjusts a timing for stopping the transferring roller after the head end of the sheet transferred by the transferring roller reaches the feeding roller that is stopped, as corresponding to adjustment of the sheet transferring speed, so that a sheet length between the feeding roller and the transferring roller, when the transferring roller is stopped, is adjusted to the set value.
Dependencies are inferred from the claim text.