JPH0321038U - - Google Patents

Description

[Brief explanation of drawings]

1 to 4 are diagrams showing an embodiment of the automatic document feeding device according to the invention as claimed in claim 1. FIG. 1 is a perspective view showing the structure of the paper guide plate and the guide plate, and FIG. The figure is an exploded perspective view of the support shaft and drive shaft of the pick up roller and feed roller, Figure 3 is a perspective view showing how the pick up roller and feed roller are assembled, and Figure 4 explains the procedure for replacing the pick up roller and feed roller. FIG. 5 and 6 are diagrams showing an embodiment of the automatic document feeding device according to the invention as claimed in claim 2. FIG. 5 is a plan view showing the main components thereof, and FIG. 6 is the main structure. It is a side view which shows a part. Figure 7~
FIG. 11 is a diagram showing an example of a conventional automatic document feeder, FIG. 7 is a cross-sectional view of the main part thereof, FIG. 8 is a cross-sectional view of the main part of another automatic document feeder, and FIG. The main part perspective view, FIG. 10, and FIG. 11 are perspective views for explaining the procedure for replacing the pick up roller and the feed roller. 31, 61... Automatic document feeder, 32... Paper guide plate (original guide plate), 32a... Conveyance surface, 32b... Projection hole, 32c... Oblong hole, 33,
62... Pick up roller, 34, 65... Feed roller, 35... Guide plate, 39, 64... Support shaft, 41... Drive shaft, 66... Drive shaft (feed side drive shaft), 67, 69... Joint, 68... Drive shaft (drive side drive shaft), 70... Feed pick up bracket (support member), 73... Bracket.

Claims (1)

[Scope of claim for utility model registration] (1) A pick-up roller that comes into contact with the bottom surface of the placed document and feeds out the bottom document, and a pressure plate that comes into contact with the top surface of the placed document and presses the document against the pick-up roller. a feed roller that is rotatably driven and conveys the document sent out by the pick-up roller; a separation member that comes into contact with the feed roller and separates the documents sent out by the pick-up roller one by one; and a separation member that rotatably supports the pick-up roller and supports the pick-up roller. A support shaft to which the rollers are removably attached, a drive shaft that rotationally drives the feed rollers and to which the feed rollers are detachably attached, and extending back and forth in the conveyance direction of each of the rollers, on which the original is placed and conveyed. a document guide plate forming a conveyance surface, and the pick-up roller and feed roller and the support shaft and drive shaft of each roller are disposed below the document guide plate, and the document guide plate is placed on the conveyance surface. In an automatic document feeder in which a protruding hole from which each roller protrudes is formed in an upper document guide plate so that each roller comes into contact with the lowermost surface, the upper document guide plate has at least An automatic document feeder characterized in that a long hole is formed in a document guide plate, a guide plate is provided to close the long hole, and the guide plate is detachably attached to the document guide plate. (2) A pick-up roller that comes into contact with the bottom surface of the placed document and feeds out the bottom document, a pressure plate that comes into contact with the top surface of the placed document and presses the document against the pick-up roller, and a pick-up roller that is rotationally driven by the pick-up roller. A feed roller that conveys the fed document, a separating member that comes into contact with the feed roller and separates the documents fed out by the pick up roller one by one, and a separation member that rotatably supports the pick up roller and is removably attached to the pick up roller. a support shaft, a drive shaft that rotationally drives the feed roller and to which the feed roller is removably attached; a bracket that rotatably supports the drive shaft and is detachably attached to the casing; a document guide plate that extends back and forth and forms a conveying surface on which the document is placed and conveyed; the pick up roller and the feed roller and the support shafts and drives of the respective rollers are provided on the lower side of the document guide plate; In the automatic document feeder in which an upper document guide plate is provided with a shaft and a protrusion hole is formed in the upper document guide plate through which each roller protrudes so that each roller comes into contact with the lowest surface of the document placed on the conveyance surface. The drive shaft is divided into a side that supports the feed roller and a drive side, and a joint is provided at both of the divided positions so that the joint can connect and separate the drive shaft at the divided position, and the feed roller side is driven. A support member that rotatably supports the shaft and supports the support shaft is provided, and the support member is disposed at a position where the feed roller side drive shaft and the drive side drive shaft are connected and is removably attached to the bracket. An automatic document feeder characterized by: