Sheet post-processing apparatus
a post-processing and sheet technology, applied in the direction of thin material processing, printing, article delivery, etc., can solve the problems of finisher not performing the processing and the down-sizing of the apparatus cannot be performed
Inactive Publication Date: 2007-03-22
TOSHIBA TEC KK
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- Description
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Benefits of technology
The present invention provides a sheet post-processing apparatus that can discharge sheets even if there are too many sheets being delivered. The apparatus includes an entrance roller, a sheet switch flapper, an upper-surface sheet output tray, a post-processing mechanism, another tray, an upper-surface sheet output tray loading sensor, and a changeover mechanism. The apparatus can detect when a predetermined number of sheets are stacked on the upper-surface sheet output tray and quickly switch to the lower conveyance path to avoid excessive sheets being delivered. This ensures efficient and effective processing of sheets.
Problems solved by technology
For this reason, down-sizing of the apparatus cannot sufficiently be performed.
There is the following problem in the conventional sheet post-processing apparatus.
The finisher does not perform the processing to some of the sheets printed by the MFP.
Method used
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[0033]FIG. 1 is a perspective view showing main parts of a post-processing apparatus according to an embodiment of the present invention, and FIG. 2 is a top view showing the main parts of the post-processing apparatus of the embodiment. The main parts of the post-processing apparatus shown in FIGS. 1 and 2 include a standby tray 10, a processing tray 12, a stapler 14, a first sheet output tray 16, and a second sheet output tray 18.
[0034] A sheet 20 delivered from an MFP 1 is received by a pair of entrance rollers (entrance roller) 22, and then, a conveyance direction of the sheet 20 is switched between an upper conveyance path 74 and a lower conveyance path 80 by a sheet switch flapper 72 based on presence or absence of post-processing (refer to FIG. 7). In the case where the post-processing is performed, the sheet 20 is delivered to the lower conveyance path 80, and is then supplied to a pair of sheet feed rollers 24 and delivered from the sheet feed rollers 24 to the standby tra...
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Abstract
A sheet post-processing apparatus of the invention includes a sheet switch flapper which divides a sheet delivered from an entrance roller into an upper conveyance path and a lower conveyance path, an upper-surface sheet output tray provided in an end portion of the upper conveyance path, a lower-surface sheet output tray which is provided in an end portion of the lower conveyance path to stack the sheet thereon, the sheet being subjected to post-processing by a post-processing mechanism, a loading sensor which is provided in the upper-surface sheet output tray to detect that a predetermined number of sheets are stacked on the upper-surface sheet output tray, and a changeover mechanism which changes the sheet switch flapper to the lower conveyance path side at the time when the loading sensor detects that the predetermined number of sheets are stacked on the upper-surface sheet output tray.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is based upon and claims the benefit of priority from prior Japanese Patent Application No. 2005-270515, filed Sep. 16, 2005, the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a sheet post-processing apparatus, such as a finisher, which is provided in a stage subsequent to multi function peripheral (MFP), and particularly to a sheet post-processing apparatus capable of smoothly stacking sheets to which post-processing is not performed. [0004] 2. Description of the Related Art [0005] Conventionally there is known a finisher which binds up and staples plural sheets onto which printing is performed by MFP. In the finisher, the sheets delivered from the MFP are sequentially conveyed to a processing tray, and the sheets are bound by a stapler and discharged to a sheet output tray. [0006] A delay mechanism for...
Claims
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IPC IPC(8): B65H33/04
CPCB42C1/12B65H29/34B65H29/60B65H31/3018B65H2301/163B65H2301/422615B65H2513/42B65H2511/152B65H2220/01B65H2220/02B65H2511/15
Inventor TERAO, YASUNOBUYAMAMOTO, MIKIOIIJIMA, TOMOMIKAWAGUCHI, TAKAHIROTAKI, HIROYUKI
Owner TOSHIBA TEC KK