Patent Grant
6926401
1. Field of the Invention
The present invention relates to a sorter for an ink-jet printer for sorting printed papers in accordance with their sizes.
2. Description of Related Art
Generally in a conventional ink-jet printer, printed papers are discharged through a discharge port and then stacked in order on a tray or the like. In case of a printer having only one discharge port and one tray, after printing on papers different in size, the printed papers stacked on the tray must be sorted in accordance with their sizes, which is troublesome work.
In order to avoid the above troublesome work, a printer may be designed so that printed papers can be discharged through different discharge ports in accordance with the paper sizes. In this design, however, a mechanism for sorting papers in accordance with their sizes must be provided within a common conveyance path for the papers. In addition, different subsequent conveyance paths and discharge ports must be provided for the respective paper sizes. Therefore, the printer cannot but have a complicated construction made up of a large number of parts. Besides, it is difficult to hold down the cost.
An object of the present invention is to provide a sorter for an ink-jet printer capable of sorting printed papers in accordance with their sizes in a simple construction.
According to an aspect of the present invention, a sorter for an ink-jet printer comprises a holder for holding a print medium. The holder has an opening with a predetermined width in a conveyance path for a print medium on which printing has been performed.
According to the invention, after a print medium is held on the holder, the print medium drops down through the opening in case of having a width smaller than the predetermined width of the opening, and the print medium stays on the holder without passing through the opening in case of having a width larger than the predetermined width of the opening. Thus, even though any complicated mechanism for size sorting is not provided, only in a simple structure wherein an opening with a predetermined width is formed in a holder, print media on which printing has been performed can be sorted in accordance with their sizes by whether the width of each print medium is larger or smaller than the predetermined width. Because any complicated mechanism for size sorting is not required, the cost can be held down.
Other and further objects, features and advantages of the invention will appear more fully from the following description taken in connection with the accompanying drawings in which:
First, an ink-jet printer provided with a sorter according to an embodiment of the present invention will be described with reference to FIG. 1. The ink-jet printer 1 includes, in a substantially rectangular parallelepiped casing 20, two paper roll housing units 4a and 4b each including a rolled long paper. Although
The advance roller unit 5 includes a pair of drive rollers. The advance roller unit 5 advances the paper 2 taken out from each of the paper roll housing units 4a and 4b, onto a table 9 and then to the ink-jet printing unit 6 and further to the cutting unit 7 in order.
The ink-jet printing unit 6 includes therein a printing head 6a and a suction fan 6b facing each other across a conveyance path for the paper 2. The printing head 6a prints a desired image on the upper face, in
The cutting unit 7 includes therein a movable edge 7a and a fixed edge facing each other 7b across the conveyance path for the paper 2. Each of the movable and fixed edges 7a and 7b has a rectangular shape with a width somewhat larger than the width of the paper 2. The movable edge 7a is moved close to or away from the fixed edge 7b. Thereby, the cutting unit 7 cuts the printed paper 2 received from the printing unit 6, along the width of the paper 2.
The discharge roller unit 8 includes a pair of drive rollers. The discharge roller unit 8 advances the paper 2 cut into a predetermined size by the cutting unit 7, to the discharge port 20a and further to a sorter 10 disposed outside of the casing 20 to be close to the discharge port 20a, as will be described later.
The operation of the each above-described unit in the ink-jet printer 1 is under the control of a non-illustrated controller disposed within the casing 20. The controller supplies, to the printing unit 6, a print signal received from, e.g., an input device as will be described later. The controller supplies drive signals at proper conveyance timings to the paper roll housing units 4a and 4b, the advance roller unit 5, and the discharge roller unit 8. The controller controls the printing timing in the printing unit 6 and the cutting timing in the cutting unit 7.
Next, the sorter 10 according to this embodiment will be described with reference to
After having come to the discharge port 20a of the ink-jet printer 1 of
As illustrated in
A pair of drive rollers 8a of the above-described discharge roller unit 8 is disposed within each of the sorting openings 12a and 12b of the A4-size paper tray 11 on the discharge port 20a side. The pair of drive rollers 8a preferably advances the paper 2 having come to the discharge port 20a, downstream along the length of the A4-size paper tray 11 and somewhat downward. Thereby, such a trouble can be avoided as a somewhat curved L-size paper 2y does not pass through the corresponding sorting opening 12a or 12b and consequently stays on the A4-size paper tray 12. though the width of the L-size paper 2y is smaller than the width w of the sorting opening 12a or 12b.
The downstream side face of each of the sorting openings 12a and 12b of the A4-size paper tray 11 is sharpened as illustrated in FIG. 2B. This is for avoiding such a trouble as a paper 2 being conveyed is stopped by the side face and thereby papers 2 are prevented from being smoothly sorted into sizes.
As illustrated in
As described above, in the sorter 10 for an ink-jet printer according to this embodiment, after a paper 2 is discharged onto the A4-size paper tray 11, the paper 2 drops down through the corresponding sorting opening 12a or 12b in case of an L-size paper 2y with width of about 89 mm smaller than the predetermined width of 100 mm of the sorting opening 12a or 12b formed in the A4-size paper tray 11. Contrastingly, in case of an A4-size paper 2x with width of about 210 mm larger than the width of the sorting opening 12a or 12b, the paper 2 stays on the A4-size paper tray 11 without passing through the sorting opening 12a or 12b. Thus, even though any complicated mechanism for size sorting is not provided, only in a simple structure wherein the sorting openings 12a and 12b with a predetermined width w are formed in the A4-size paper tray 11, printed papers 2 can be sorted in accordance with their sizes by whether the width of each paper 2 is larger or smaller than the predetermined width w. Because any complicated mechanism for size sorting is not required, the cost can be held down.
The sorter 10 of this embodiment is provided outside the discharge port 20a, that is, outside the main body of the ink-jet printer 1. Therefore, printed papers 2 are conveyed in the same conveyance path in the main body of the ink-jet printer 1 irrespective of the paper sizes. The papers 2 are discharged through one discharge port 20a and then sorted by the A4-size paper tray 11 in which the sorting opening 12a or 12b are formed. If printed papers 2 are sorted before discharged through the discharge port 20a, the main body of the ink-jet printer 1 must include therein conveyance paths and discharge ports 20a for the respective paper sizes. In case of sorting outside the discharge port 20a, however, only one conveyance path and one discharge port 20a suffice. Thus, the construction of the main body of the ink-jet printer 1 is relatively simple. The simple construction of the main body of the ink-jet printer 1 can hold down the cost.
Further, because the sorter 10 includes the conveyor 15 below the A4-size paper tray 11, L-size papers 2y having passed through the sorting openings 12a and 12b of the A4-size paper tray 11 can be conveyed to the L-size paper tray 16 by the conveyor 15. Thus, such a trouble can be prevented as L-size papers 2y having passed through the sorting openings 12a and 12b of the A4-size paper tray 11 are stacked in order below the A4-size paper tray 11 and finally the space below the A4-size paper tray 11 is filled up with the stacked L-size papers 2y. In addition, even in case that the plural sorting openings 12a and 12b are formed in the A4-size paper tray 11, because L-size papers 2y on the conveyor 15 are conveyed perpendicularly to a conveying direction on the A4-size paper tray 11 and then stacked in order on the L-size paper tray 16, the L-size papers 2y can be arranged in a proper order.
The ink-jet printer 1 of this embodiment is a double magazine type in which two paper roll housing units 4a and 4b are provided, and accordingly two sorting openings 12a and 12b are formed in parallel. However, in case of a printer including only one paper roll housing unit, an A4-size paper tray 21 in which only one sorting opening 22 is formed, as illustrated in
In this embodiment, the sorting openings 12a and 12b each having a predetermined width of 100 mm are formed in the A4-size paper tray 11 in order to sort papers into A4-size and L-size. However, the width w of the each of sorting openings 12a and 12b may vary in accordance with paper sizes to be sorted.
The conveyor 15 provided below the A4-size paper tray 11 may be omitted and further also the L-size paper tray 16 may be omitted. In this case, L-size papers 2y having passed through the sorting openings 12a and 12b of the A4-size paper tray 11 are stacked below the A4-size paper tray 11.
Further, in the above-described embodiment, the sorter 10 is provided outside the discharge port 20a, that is, outside the main body of the ink-jet printer 1, so that the A4-size paper tray 11 can receive papers discharged through the discharge port 20a. However, the present invention is not limited to this embodiment. For example, the sorter 10 may be provided within the main body of the ink-jet printer 1. In this case, papers 2 are sorted in accordance with their sizes within the main body of the ink-jet printer 1. The main body of the ink-jet printer 1 has discharge ports for the respective sorted paper sizes, i.e., two kinds of sizes in the above embodiment, and includes therein conveyance paths for the respective paper sizes from the sorter 10 to the respective discharge ports.
As illustrated in
The input system 50 includes a scanner 51 for reading an image from a film or the like; a keyboard 52 and a mouse 53 for inputting the number of prints, compensation values for color and density, etc.; a monitor 54 for displaying various kinds of information about the print system 100 to an operator and for, as needed, urging an operator to input through the keyboard 52 and mouse 53; and a reader 55 for reading information such as an image from a storage medium supplied by the operator, such as a Smart Media, a Memory Stick, or a Compact Flash, each of which is a registered trademark. Using this input system 50, a print signal containing image data corresponding to an image to be printed, obtained by applying a predetermined process to an image signal from the scanner 51 or the reader 55, can be supplied to the non-illustrated controller of the ink-jet printer 1 as described above.
While this invention has been described in conjunction with the specific embodiments outlined above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the preferred embodiments of the invention as set forth above are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the invention as defined in the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2002-191604 | Jul 2002 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5567068 | Egashira et al. | Oct 1996 | A |
| 5949462 | Esplin et al. | Sep 1999 | A |
| 6144468 | Watanabe | Nov 2000 | A |
| Number | Date | Country | |
|---|---|---|---|
| 20040017464 A1 | Jan 2004 | US |
