US20070001375A1 - Printer - Google Patents
Printer Download PDFInfo
- Publication number
- US20070001375A1 US20070001375A1 US11/450,437 US45043706A US2007001375A1 US 20070001375 A1 US20070001375 A1 US 20070001375A1 US 45043706 A US45043706 A US 45043706A US 2007001375 A1 US2007001375 A1 US 2007001375A1
- Authority
- US
- United States
- Prior art keywords
- arm
- free
- printer
- paper
- pick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/02—Separating articles from piles using friction forces between articles and separator
- B65H3/06—Rollers or like rotary separators
- B65H3/0661—Rollers or like rotary separators for separating inclined-stacked articles with separator rollers above the stack
Definitions
- the invention relates to a printer, and in particular to a printer with a pick-up roller protection mechanism.
- FIG. 1 a depicts a base of a conventional printer.
- FIG. 1 b is a partially enlarged view of region A of FIG. 1 a .
- a base 10 comprises an incline surface 12 on which a depression 14 is formed.
- the depression 14 can prevent the pick-up roller from contacting the incline surface 12 directly when paper thereon runs out.
- the direct contact of the pick-up roller and the incline surface can wear the pick-up roller, and even break the shaft of the pick-up roller.
- the pick-up roller falls into the depression 14 and idles therein rather than contacting the incline surface directly.
- the pick-up roller easily presses the paper into the depression 14 , and an impression may occur on the paper.
- An embodiment of a printer of the invention comprises: a base having an incline surface for loading paper on which a depression is formed; a shaft disposed above the incline surface; an arm pivoted on the shaft; a pick-up roller disposed on the tip of the arm; and a free arm with one end pivoted on the arm and the other end free.
- the free arm can be rotated by gravity or an elastic element disposed between the free arm and the arm, whereby the free end enters the depression.
- the elastic element can comprises a torsion spring.
- FIG. 1 a depicts a base of a conventional printer
- FIG. 1 b is a partially enlarged view of region A of FIG. 1 a;
- FIGS. 2 a and 2 b depict another pick-up roller protection mechanism of a conventional printer
- FIG. 3 is a perspective view of an embodiment of a printer
- FIG. 4 is an exploded view of FIG. 3 ;
- FIG. 5 depicts the free arm pivoted on the arm
- FIG. 6 depicts the free arm detached from the arm
- FIGS. 7 a to 11 b depict the free arm preventing direct contact of the pick-up roller and the inclined surface
- FIG. 12 is a perspective view of another embodiment of the free arm
- FIG. 13 is an exploded view of FIG. 12 ;
- FIG. 14 is an enlarged view of the free arm of FIG. 13 .
- an embodiment of the printer comprises a base 100 .
- An inclined surface 200 is disposed on the base 100 .
- a shaft 300 is disposed above the inclined surface 200 .
- An arm 400 is pivoted on the shaft 300 .
- a pick-up roller 500 is disposed on the tip of the arm 400 .
- the shaft 300 drives the transmission mechanism (not shown) in the arm 400 to rotate the pick-up roller 500 .
- a free arm 600 is pivoted on the arm 400 .
- a shaft element 620 is disposed on one end of the free arm 600 .
- the shaft element 620 is inserted into a hole in the arm 400 , whereby the free arm 600 is pivoted on the arm 400 .
- the other end of the free arm 600 is released.
- FIGS. 7 a to 11 b depict the free arm avoiding direct contact of the pick-up roller and the inclined surface.
- the free arm 600 maintains an appropriate distance between the pick-up roller 500 and the incline surface 220 .
- the depression 220 is not disposed immediately under the pick-up roller 500 and the free arm 600 exerts no force on the paper 7 , no impression occurs on the paper 7 .
- a torsion spring 700 is disposed between the free arm 600 and the arm 400 .
- One end of the torsion spring 700 is secured on the arm 400 , and the other end thereof biases the free arm 600 . Accordingly, when paper 7 runs out, the biasing force of the torsion spring 700 rotates the free arm 600 to increase the reliability of the free arm 600 entering the depression 220 .
- the arm 400 comprises a shaft element 440
- the free arm 600 comprises a hole 640 in which the shaft element 440 is inserted.
- the free arm 600 is positioned on the arm 400 by a pin 800 .
- a post 680 disposed on the free arm 600 is used for positioning the torsion spring 700 .
- torsion spring 700 is used in this embodiment, it is not limited thereto.
- Other elastic elements such as a expansion spring with one end on the arm 400 and the other end on the free arm 600 , can also be used to ensure that the free arm enters the depression.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
A printer. The printer comprises a base having an incline surface for paper on which a depression is formed, a shaft disposed above the incline surface, an arm pivoted on the shaft, a pick-up roller disposed on the tip of the arm, and a free arm with one end pivoted on the arm and the other end free. When the paper on the incline surface runs out, the free arm is rotated and the free end enters and abuts the depression, whereby the arm is supported by the free arm to maintain an appropriate distance to the incline surface.
Description
- The invention relates to a printer, and in particular to a printer with a pick-up roller protection mechanism.
-
FIG. 1 a depicts a base of a conventional printer.FIG. 1 b is a partially enlarged view of region A ofFIG. 1 a. Abase 10 comprises anincline surface 12 on which adepression 14 is formed. Thedepression 14 can prevent the pick-up roller from contacting theincline surface 12 directly when paper thereon runs out. The direct contact of the pick-up roller and the incline surface can wear the pick-up roller, and even break the shaft of the pick-up roller. When no paper is loaded on theincline surface 12, the pick-up roller falls into thedepression 14 and idles therein rather than contacting the incline surface directly. In such a structure, when little paper remains on the incline surface, the pick-up roller easily presses the paper into thedepression 14, and an impression may occur on the paper. - Another pick-up roller protection mechanism is disclosed in U.S. Pat. No. 5,527,026 shown in
FIGS. 2 a and 2 b. When paper is loaded on apick plate 21, the pick-up roller 13 rotates and picks up paper. When paper on thepick plate 21 runs out, aroller 27 projecting from a groove on thepick plate 21 contacts and rotates with the pick-up roller 13 to avoid direct contact of the pick-up roller 13 and thepick plate 21. - An embodiment of a printer of the invention comprises: a base having an incline surface for loading paper on which a depression is formed; a shaft disposed above the incline surface; an arm pivoted on the shaft; a pick-up roller disposed on the tip of the arm; and a free arm with one end pivoted on the arm and the other end free. When the paper on the incline surface runs out, the free arm is rotated and the free end enters and abuts the depression, whereby the arm is supported by the free arm to maintain an appropriate distance from the incline surface.
- The free arm can be rotated by gravity or an elastic element disposed between the free arm and the arm, whereby the free end enters the depression. The elastic element can comprises a torsion spring.
- The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
-
FIG. 1 a depicts a base of a conventional printer; -
FIG. 1 b is a partially enlarged view of region A ofFIG. 1 a; -
FIGS. 2 a and 2 b depict another pick-up roller protection mechanism of a conventional printer; -
FIG. 3 is a perspective view of an embodiment of a printer; -
FIG. 4 is an exploded view ofFIG. 3 ; -
FIG. 5 depicts the free arm pivoted on the arm; -
FIG. 6 depicts the free arm detached from the arm; -
FIGS. 7 a to 11 b depict the free arm preventing direct contact of the pick-up roller and the inclined surface; -
FIG. 12 is a perspective view of another embodiment of the free arm; -
FIG. 13 is an exploded view ofFIG. 12 ; and -
FIG. 14 is an enlarged view of the free arm ofFIG. 13 . - Referring to
FIGS. 3 and 4 , an embodiment of the printer comprises abase 100. Aninclined surface 200 is disposed on thebase 100. Ashaft 300 is disposed above theinclined surface 200. Anarm 400 is pivoted on theshaft 300. A pick-up roller 500 is disposed on the tip of thearm 400. Theshaft 300 drives the transmission mechanism (not shown) in thearm 400 to rotate the pick-up roller 500. Afree arm 600 is pivoted on thearm 400. Referring toFIGS. 5 and 6 , ashaft element 620 is disposed on one end of thefree arm 600. Theshaft element 620 is inserted into a hole in thearm 400, whereby thefree arm 600 is pivoted on thearm 400. The other end of thefree arm 600 is released. -
FIGS. 7 a to 11 b depict the free arm avoiding direct contact of the pick-up roller and the inclined surface. - In
FIGS. 7 a and 7 b, when no paper is loaded on theinclined surface 200, thefree arm 600 enters and abuts adepression 220 on theincline surface 200, whereby thearm 400 is supported to maintain an appropriate distance between the pick-up roller 500 and theincline surface 200 to prevent direct contact therebetween. Whenpaper 7 is loaded on theincline surface 200, thefree arm 600 is lifted bypaper 7 and the pick-up roller 500 contacts and picks up thepaper 7 as shown inFIGS. 8 a and 8 b. As the amount of thepaper 7 is decreased gradually, thearm 400 is lowered and thefree arm 600 rotates down as shown inFIGS. 9 a and 9 b. When only one piece of thepaper 7 remains on the incline surface, the front of thepaper 7 enters printing region and the rear end of thepaper 7 is stretched as shown inFIGS. 10 a and 10 b. Thearm 400 is lifted by thepaper 7 to a specific height, and thefree arm 600 is lifted by thearm 400. When the rear end of thepaper 7 leaves thefree arm 600 and still contacts thearm 400, thefree arm 600 is rotated counterclockwise by gravity and enters thedepression 220. When thepaper 7 escapes from thearm 400 completely, thefree arm 600 enters and abuts thedepression 220, and thearm 400 is supported by thefree arm 600 to maintain an appropriate distance from theincline surface 220 as shown inFIGS. 11 a and 11 b. - Accordingly, the
free arm 600 maintains an appropriate distance between the pick-up roller 500 and theincline surface 220. As thedepression 220 is not disposed immediately under the pick-up roller 500 and thefree arm 600 exerts no force on thepaper 7, no impression occurs on thepaper 7. - Referring to
FIGS. 12 and 13 , atorsion spring 700 is disposed between thefree arm 600 and thearm 400. One end of thetorsion spring 700 is secured on thearm 400, and the other end thereof biases thefree arm 600. Accordingly, whenpaper 7 runs out, the biasing force of thetorsion spring 700 rotates thefree arm 600 to increase the reliability of thefree arm 600 entering thedepression 220. In addition, thearm 400 comprises ashaft element 440, and thefree arm 600 comprises ahole 640 in which theshaft element 440 is inserted. Thefree arm 600 is positioned on thearm 400 by apin 800. Referring toFIG. 14 , apost 680 disposed on thefree arm 600 is used for positioning thetorsion spring 700. Although atorsion spring 700 is used in this embodiment, it is not limited thereto. Other elastic elements, such as a expansion spring with one end on thearm 400 and the other end on thefree arm 600, can also be used to ensure that the free arm enters the depression. - While the invention has been described by way of example and in terms of preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims (10)
1. A printer, comprising:
a base having an incline surface for paper on which a depression is formed;
a shaft disposed above the incline surface;
an arm pivoted on the shaft;
a pick-up roller disposed on the tip of the arm; and
a free arm with one end pivoted on the arm and the other end free, wherein when the paper on the incline surface runs out, the free arm is rotated and the free end enters and abuts the depression, whereby the arm is supported by the free arm to maintain an appropriate distance from the incline surface.
2. The printer as claimed in claim 1 , wherein the free arm is rotated by gravity, whereby the free end enters the depression.
3. The printer as claimed in claim 1 further comprising an elastic element disposed between the arm and the free arm and biasing the free arm, wherein when the paper on the incline surface runs out, the free arm rotates and the free end enters the depression.
4. The printer as claimed in claim 3 , wherein the elastic element comprises a torsion spring.
5. The printer as claimed in claim 3 , wherein the elastic element comprises an expansion spring with one end disposed on the arm and the other end disposed on the free arm.
6. The printer as claimed in claim 4 , wherein the free arm comprises a post on which the torsion spring is disposed.
7. The printer as claimed in claim 1 , wherein the arm comprises a hole and the free arm comprises a shaft element inserted into the hole, whereby the free arm is pivoted on the arm.
8. The printer as claimed in claim 1 , wherein the arm comprises a shaft element and the free arm comprises a hole into which the shaft element is inserted, whereby the free arm is pivoted on the arm.
9. The printer as claimed in claim 8 further comprising a pin connecting the shaft element and the hole.
10. The printer as claimed in claim 1 , wherein the arm comprising a transmission mechanism driven by the shaft to rotate the pick-up roller to pick up the paper.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW094119619A TWI251542B (en) | 2005-06-14 | 2005-06-14 | Printer with pick wheel protection mechanism |
TW94119619 | 2005-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070001375A1 true US20070001375A1 (en) | 2007-01-04 |
Family
ID=37453699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/450,437 Abandoned US20070001375A1 (en) | 2005-06-14 | 2006-06-12 | Printer |
Country Status (2)
Country | Link |
---|---|
US (1) | US20070001375A1 (en) |
TW (1) | TWI251542B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070104529A1 (en) * | 2005-11-10 | 2007-05-10 | Chien-Chih Chen | Paper-feeding system capable of switching paper-feeding statuses |
US20090033024A1 (en) * | 2007-07-30 | 2009-02-05 | Brother Kogyo Kabushiki Kaisha | Sheet conveying devices and image recording apparatuses including the same |
US20090079127A1 (en) * | 2007-09-24 | 2009-03-26 | Kevin Bokelman | Media pick system and method |
US20110056266A1 (en) * | 2009-06-19 | 2011-03-10 | Daniel Robert Gagnon | Method For Calibrating Stack Height Sensing In A Media Stack Height Monitoring System In An Image Forming Machine |
US8052139B1 (en) * | 2010-09-03 | 2011-11-08 | Foxlink Image Technology Co., Ltd. | Document feeding mechanism having stopper means |
US20150158684A1 (en) * | 2013-12-11 | 2015-06-11 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US20150274454A1 (en) * | 2014-03-31 | 2015-10-01 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5527026A (en) * | 1995-03-17 | 1996-06-18 | Lexmark International, Inc. | Auto compensating paper feeder |
US5996995A (en) * | 1996-02-13 | 1999-12-07 | Samsung Electronics Co., Ltd. | Device for switching paper passage in multi-functional image producing apparatus |
US20040012139A1 (en) * | 2002-07-18 | 2004-01-22 | Brother Kogyo Kabushiki Kaisha | Sheet feeder |
-
2005
- 2005-06-14 TW TW094119619A patent/TWI251542B/en not_active IP Right Cessation
-
2006
- 2006-06-12 US US11/450,437 patent/US20070001375A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5527026A (en) * | 1995-03-17 | 1996-06-18 | Lexmark International, Inc. | Auto compensating paper feeder |
US5996995A (en) * | 1996-02-13 | 1999-12-07 | Samsung Electronics Co., Ltd. | Device for switching paper passage in multi-functional image producing apparatus |
US20040012139A1 (en) * | 2002-07-18 | 2004-01-22 | Brother Kogyo Kabushiki Kaisha | Sheet feeder |
US6918583B2 (en) * | 2002-07-18 | 2005-07-19 | Brother Kogyo Kabushiki Kaisha | Sheet feeder |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070104529A1 (en) * | 2005-11-10 | 2007-05-10 | Chien-Chih Chen | Paper-feeding system capable of switching paper-feeding statuses |
US7523928B2 (en) * | 2005-11-10 | 2009-04-28 | Qisda Corporation | Paper-feeding system capable of switching paper-feeding statuses |
US20090033024A1 (en) * | 2007-07-30 | 2009-02-05 | Brother Kogyo Kabushiki Kaisha | Sheet conveying devices and image recording apparatuses including the same |
US7703763B2 (en) * | 2007-07-30 | 2010-04-27 | Brother Kogyo Kabushiki Kaisha | Sheet conveying devices and image recording apparatuses including the same |
US20090079127A1 (en) * | 2007-09-24 | 2009-03-26 | Kevin Bokelman | Media pick system and method |
US7866658B2 (en) | 2007-09-24 | 2011-01-11 | Hewlett-Packard Development Company, L.P. | Media pick system and method |
US20110056266A1 (en) * | 2009-06-19 | 2011-03-10 | Daniel Robert Gagnon | Method For Calibrating Stack Height Sensing In A Media Stack Height Monitoring System In An Image Forming Machine |
US8246042B2 (en) * | 2009-06-19 | 2012-08-21 | Lexmark International, Inc. | Method for calibrating stack height sensing in a media stack height monitoring system in an image forming machine |
US8061705B1 (en) * | 2010-09-03 | 2011-11-22 | Foxlink Image Technology Co., Ltd. | Document feeding mechanism |
US20120056368A1 (en) * | 2010-09-03 | 2012-03-08 | Foxlink Image Technology Co., Ltd. | Document feeding mechanism |
US8210520B2 (en) * | 2010-09-03 | 2012-07-03 | Foxlink Image Technology Co., Ltd. | Document feeding mechanism having stopper means |
US8052139B1 (en) * | 2010-09-03 | 2011-11-08 | Foxlink Image Technology Co., Ltd. | Document feeding mechanism having stopper means |
US20150158684A1 (en) * | 2013-12-11 | 2015-06-11 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US9637334B2 (en) * | 2013-12-11 | 2017-05-02 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US20170217700A1 (en) * | 2013-12-11 | 2017-08-03 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US10882707B2 (en) * | 2013-12-11 | 2021-01-05 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US20150274454A1 (en) * | 2014-03-31 | 2015-10-01 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US9346637B2 (en) * | 2014-03-31 | 2016-05-24 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
US9643804B2 (en) | 2014-03-31 | 2017-05-09 | Brother Kogyo Kabushiki Kaisha | Feed apparatus and image recording apparatus |
Also Published As
Publication number | Publication date |
---|---|
TW200642854A (en) | 2006-12-16 |
TWI251542B (en) | 2006-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BENQ CORPORATION, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZHU, YING-QI;REEL/FRAME:017989/0793 Effective date: 20060530 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |