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Title:
SHEET DELIVERY DEVICE, SHEET STACKING DETECTION METHOD, SHEET STACKING DETECTION PROGRAM AND IMAGE FORMING DEVICE INCLUDING SHEET DELIVERY DEVICE
Document Type and Number:
Japanese Patent JP2014069912
Kind Code:
A
Abstract:

To accurately detect a full stacked state of sheets within a tray even when delivery intervals of the sheets are short.

A sheet delivery device 100 includes: a tray 11 on which sheets are stacked; a delivery mechanism for delivering sheets one by one; a weight 20 lifted up by sheets to be delivered or sheets on the tray 11; a sensor SE transmitting a first signal when the weight 20 is located at a position lower than a reference position and transmitting a second signal when the weight 20 is located at a position equal to or higher than the reference position; a memory that stores a maximum value of a time interval at which the weight 20 is lifted up by two sheets continuously delivered at the time interval and maintains the height equal to or higher than the reference position, as a predetermined time; and a control part controlling the delivery mechanism. The control part determines whether or not the time interval between two sheets exceeds the predetermined time. When it is determined that the time interval exceeds the predetermined time and the sensor SE continuously transmits the second signal over the predetermined time, the control part determines that the sheets are stacked up to height equal to or higher than the reference position within the tray 11.


Inventors:
MIYAJIMA YUSUKE
Application Number:
JP2012215908A
Publication Date:
April 21, 2014
Filing Date:
September 28, 2012
Export Citation:
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Assignee:
BROTHER IND LTD
International Classes:
B65H43/06
Domestic Patent References:
JP2011221179A2011-11-04
JP2008122934A2008-05-29
Attorney, Agent or Firm:
Patent business corporation Yuko patent office