Sheet handling device

Claim 2

A sheet handling device comprising: stack means for stacking sheets; first detection means for detecting the presence or absence of sheets in said stack means; feed means for feeding a sheet in said stack means to a predetermined position along a feed path; second detection means for detecting the presence or absence of sheets on said feed path; misfeed detection means for detecting misfeed of a sheet in accordance with an output of said second detection means; and control means for stopping said feed means in response to the detection of the misfeed of the sheet by said misfeed detection means and permitting said feed means to restart on conditions that said second detection means detects the absence of a sheet on said feed path and said first detection means detects the absence of a sheet in said stack means.

Claim 3

A sheet handling device according to claim 1 wherein said misfeed is a sheet jam.

Claim 4

A sheet handling device according to claim 2, wherein said jam is a squeeze jam in which a sheet is squeezed into said second detection means exceeding a first predetermined time.

Claim 5

A sheet handling device according to claim 1, wherein said control means permits said feed means to restart in the event that first, said second detection means detects the absence of a sheet on said feed path, and then said first detection means detects the absence of a sheet in said stack means.

Claim 6

A sheet handling device comprising: feed means for feeding a sheet to a predetermined position; misfeed detection means for detecting first and second misfeed of a sheet in a feed path in said feed means, said misfeed detection means including sheet detection means and detecting the misfeed of the sheet in accordance with an output of said sheet detection means; brake means for braking said feed means; and control means for causing said feed means to stop the operation when said misfeed detection means detects the first and second misfeed, and enabling said feed means to operate in accordance with the output of said sheet detection means after occurence of the first and second misfeed, said control means enabling said brake means to operate at the time of occurrence of the first misfeed, and disenabling said brake means to operate at the time of occurrence of the second misfeed.

Claim 7

A sheet handling device comprising: feed means for feeding a sheet to a predetermined position; misfeed detection means for detecting first and second misfeed of a sheet in a feed path in said feed means, said misfeed detection means including sheet detection means and detecting the misfeed of the sheet in accordance with an output of said sheet detection means; brake means for braking said feed means; and control means for causing said feed means to stop the operation when said misfeed detection means detects the first and second misfeed, and enabling said feed means to operate in accordance with the output of said sheet detection means after occurence of the first and second misfeed, said control means enabling said brake means to operate at the time of occurrence of the first misfeed, and disenabling said brake means to operate at the time of occurrence of the second misfeed.

Claim 8

A sheet handling device according to claim 5, wherein said first misfeed is a squeeze jam in which a sheet is squeezed into said sheet detection means exceeding a first predetermined time.

Claim 9

A sheet handling device according to claim 5, wherein said second misfeed is a delay jam in which a sheet does not reach said sheet detection means exceeding a second predetermined time.

Claim 10

An original document handling device comprising: separation means for separating original documents one by one at a first speed; feed means for feeding an original document separated by said separation means to an exposure position at a second speed higher than said first speed and for delivering the original document from said exposure position after termination of an exposure; detection means for detecting the original document in said feed means, said detection means being positioned upstream more than said exposure position with respect to the transporting direction of the original document; and control means for controlling said separation means in accordance with the output of said detection means so as to initiate the separating operation for the successive original document upon detection of a predetermined portion of the original document by said detection means before the original document reaches the exposure position.

Claim 11

An original document handling device comprising: separation means for separating original documents one by one at a first speed; feed means for feeding an original document separated by said separation means to an exposure position at a second speed higher than said first speed and for delivering the original document from said exposure position after termination of an exposure; detection means for detecting the original document in said feed means, said detection means being positioned upstream more than said exposure position with respect to the transporting direction of the original document; and control means for controlling said separation means in accordance with the output of said detection means so as to initiate the separating operation for the successive original document upon detection of a predetermined portion of the original document by said detection means before the original document reaches the exposure position.

Claim 12

An original handling device according to claim 8, wherein said predetermined portion is a trailing edge of the original document.

Claim 13

An original document handling device according to claim 8, wherein said control means further controls said feed means to stop the previous original document at said predetermined position in accordance with the output of said detection means.

Claim 14

An original document handling device according to claim 10, wherein the output of said detection means is produced in response to the detection of a leading edge of the original document.

Claim 15

An original document handling device according to claim 10, wherein the previous original document reaches said predetermined position before the next original document is fed from said separation means to said feed means.

Claim 16

An original document handling device according to claim 8, wherein said detection means is disposed at an entry of said feed means.

Claim 17

An original document handling device according to claim 13, wherein said feed means includes a first feed unit for feeding the original document to said predetermined position and a second feed unit for feeding the original document separated by said separation means to said first feed unit, and said detection means is disposed between said first feed unit and said second feed unit.

Claim 18

A sheet handling device comprising: feed means for feeding a sheet to a predetermined position; misfeed detection means for detecting first and second misfeed of a sheet in a feed path in said feed means, said misfeed detection means including sheet detection means and detecting the misfeed of the sheet in accordance with an output of said sheet detection means; and control means for stopping said feed means in response to the detection of the misfeed of the sheet by said misfeed detection means and permitting said feed means to restart under a predetermined condition, wherein said predetermined condition is differentiated between the time of occurrence of the first misfeed and the time of occurrence of the second misfeed.

Claim 19

A sheet handling device comprising: feed means for feeding a sheet to a predetermined position; misfeed detection means for detecting first and second misfeed of a sheet in a feed path in said feed means, said misfeed detection means including sheet detection means and detecting the misfeed of the sheet in accordance with an output of said sheet detection means; and control means for stopping said feed means in response to the detection of the misfeed of the sheet by said misfeed detection means and permitting said feed means to restart under a predetermined condition, wherein said predetermined condition is differentiated between the time of occurrence of the first misfeed and the time of occurrence of the second misfeed.

Claim 20

A sheet handling device according to claim 15, wherein said first misfeed is a squeeze jam in which a sheet is squeezed into said sheet detection means exceeding a first predetermined time.

Claim 21

A sheet handling device according to claim 16, wherein said control means permits said feed means to restart on condition that said sheet detection means detects the absence of a sheet after occurrence of said squeeze jam.

Claim 22

A sheet handling device according to claim 15, wherein said second misfeed is a delay jam in which a sheet does not reach said sheet detection means exceeding a predetermined time.

Claim 23

A sheet handling device according to claim 18, wherein said feed means is able to open and shut with respect to said predetermined position, and said control means permits said feed means to restart on condition that the open and shut performance of said feed means is detected after occurrence of said delay jam.