EP1698576A1 - Paper feed cassette - Google Patents
Paper feed cassette Download PDFInfo
- Publication number
- EP1698576A1 EP1698576A1 EP05290464A EP05290464A EP1698576A1 EP 1698576 A1 EP1698576 A1 EP 1698576A1 EP 05290464 A EP05290464 A EP 05290464A EP 05290464 A EP05290464 A EP 05290464A EP 1698576 A1 EP1698576 A1 EP 1698576A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- paper feed
- feed cassette
- paper
- sheets
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 230000003213 activating effect Effects 0.000 claims description 3
- 244000150187 Cyperus papyrus Species 0.000 claims 1
- 239000000123 paper Substances 0.000 description 85
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Images
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
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/04—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/12—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/14—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
Definitions
- the present invention relates to a paper feed cassette for a printer, a copier, a fax machine, or the like, having a first housing.
- Paper feed cassettes of this type offer a paper reserve to a printer, a copier, a fax machine, or the like, the paper feed cassettes working together with a paper receiving device, the paper stack being pressed down by the paper receiving device and the paper subsequently being received.
- the processable stack height of the paper is limited by the maximum travel height of the paper receiving device.
- the object of the present invention is to specify a paper feed cassette of the type described at the beginning, which avoids the known disadvantages and in which a quantity of paper exceeding the processable stack height of the paper receiving device may be provided.
- a second housing for receiving sheets is positioned in the first housing, the second housing being mounted so it is movable in the first housing, and a blocking device is provided for a motion direction of the second housing in relation to the first housing.
- the second housing may be blocked in relation to the first housing by the blocking device when paper is removed, particularly when paper is removed against the force direction of the paper receiving device, through which yielding of the paper stack through the pressure of the paper receiving device is prevented and perfect functioning of the paper removal may be ensured.
- An elevated quantity of paper may thus be provided to a paper receiving device by the paper feed cassette according to the present invention, because of which paper has to be refilled less often. In this way, it may be ensured, particularly in the event of long absence, that a fax machine has a sufficient paper reserve and the danger of data loss because of a lack of output and/or memory capacity is significantly reduced.
- the blocking device may have at least one first wedge element and at least one diametrically opposed wedge element, the first wedge element being assigned to the first housing in the second wedge element being assigned to the second housing, and the first wedge element is positioned so it is displaceable in relation to the first housing and/or the second wedge element is positioned so it is displaceable in relation to the second housing.
- the wedge elements represent a simple embodiment of the blocking device, automatic setting of the blocking device to the fill level of the paper feed cassette being able to be ensured through the displaceable positioning of at least one of the wedge elements.
- the displaceable wedge element may be spring-loaded using a pre-tensioning device in the direction of the diametrically opposing wedge element when the paper feed cassette is inserted.
- a pre-tensioning device in the direction of the diametrically opposing wedge element when the paper feed cassette is inserted.
- a driver element for activating the pre-tensioning device which may be actuated when the paper feed cassette is inserted, may be provided.
- the activation of the pre-tensioning device may be caused easily without an additional operating procedure when the paper feed cassette is inserted, the blocking device being deactivated and refilling of sheets being made possible when the paper feed cassette is removed.
- the present invention relates to a paper feed cassette for a printer, a copier, a fax machine, or the like having a first housing.
- Paper feed cassettes of this type offer a paper reserve to a printer, a copier, a fax machine, or the like, the paper feed cassettes working together with a paper receiving device, the paper stack being pressed down by the paper receiving device and the paper subsequently being received.
- the processable stack height of the paper is limited by the maximum travel height of the paper receiving device.
- the object of the present invention is to specify a paper feed cassette of the type described at the beginning, which avoids the known disadvantages and in which a quantity of paper exceeding the processable stack height of the paper receiving device may be provided.
- a second housing for receiving sheets is positioned in the first housing, the second housing being mounted in the first housing so it is movable using at least one lever arm.
- the second housing is easily movable in relation to the first housing, only slight friction occurring.
- a paper receiving device Through the interaction of a paper receiving device with the second housing, the sheets of a paper stack may be completely removed using a paper receiving device whose travel height is less than the thickness of the paper stack.
- An increased quantity of paper may thus be provided to a paper receiving device by the paper feed cassette according to the present invention, because of which paper has to be refilled less often. In this way, it may be ensured, particularly in the event of long absence of an operator, that a fax machine has a sufficient paper reserve and the danger of data loss because of a lack of output and/or memory capacity is significantly reduced.
- the sheets in the second housing may be positioned on the narrow side of the sheets at a predefinable angle of incidence, and the motion of the second housing in relation to the first housing may occur between an upper end position and a lower end position essentially along a circuit, the circuit approximating a straight line with the angle of incidence and the maximum deviation - measured perpendicularly to this straight line - being less than 1 cm, preferably less than 8 mm, particularly less than 5 mm, through which the sheets may be provided uniformly over the entire stack height and reliable removal by a paper receiving device may be ensured.
- the second housing may have a floor corresponding to the format of the sheets, two long side walls, and at least one narrow side wall. In this way, reliable guiding of the sheets in the second housing may be ensured.
- one front lever arm and one rear lever arm may be positioned on each of the long side walls, each two of the lever arms being positioned diametrically opposite and the lever arms having equal lever lengths, through which uniform and reliable motion of the second housing in relation to the first housing may be ensured.
- the rear lever arms may be connected to one another using a connection element at their ends facing away from the second housing.
- a connection element at their ends facing away from the second housing.
- an equalization element for positioning the current uppermost sheet may be positioned between the first housing and the second housing. If sheets are removed from the second housing, the height of the uppermost sheet falls. Through the equalization element, this height may be compensated for, through which the height of the uppermost sheet is kept approximately constant for at least a part of the stack projecting over the second housing, and reliable removal of the uppermost sheet via the paper receiving device may be ensured.
- a blocking device as described at the beginning may be provided, through which the motion of the second housing in relation to the first housing may be blocked easily if necessary.
- FIG. 1 An embodiment of a paper feed cassette 1 according to the present invention having a first housing 2 is shown in Figures 1 through 7.
- the paper feed cassette 1 is suitable for use with a printer, a copier, a fax machine, or similar devices which remove sheets from a supply stack.
- a second housing 3 for receiving sheets is positioned in the first housing 2, the second housing 3 being mounted so it is movable in the first housing 2. Through the motion of the second housing 3, the sheets received in the second housing 3 may be moved in relation to the first housing 2.
- the sheets may be made of paper, cardboard, a film, or other materials typical for such devices.
- a blocking device 4 for a motion direction of the second housing 3 in relation to the first housing 2 is provided.
- the blocking device 4 in the embodiment shown, the downward motion of the second housing 3 in the first housing 2 may be blocked.
- the paper receiving device presses the second housing 3 in the direction of the first housing 2, the second housing 3 being held by the blocking device 4. In this case, it is sufficient if the maximum travel height of the paper receiving device corresponds to the depth of the second housing 3.
- the second housing 3 is positioned lowered in the first housing 2 and the stack of sheets projects over the second housing 3, Durirlg removal by the paper receiving device, only a slight travel is necessary, since the travel motion executed is limited by the stack itself. If the height of the stack is greater than the maximum travel height of the paper receiving device, if the second housing 3 is connected fixed to the first housing 2, only a part of the stack may be removed. In the paper feed cassette 1, the second housing 3 is positioned so it is movable in the first housing 2. If the second housing 3 is raised in relation to the first housing 2, it may be ensured that the paper receiving device may engage the uppermost sheet of the stack, even if the stack only comprises one sheet.
- the blocking device 4 may have at least one first wedge element 41 and at least one diametrically opposite second wedge element 42, the first wedge element 41 being assigned to the first housing 2 and the second wedge element 42 being assigned to the second housing 3.
- the first wedge element 41 is positioned so it is displaceable in relation to the first housing 2.
- the second wedge element 42 may also be positioned so it is displaceable in relation to the second housing 3.
- both the first wedge element 41 and the second wedge element 42 may be positioned so they are displaceable in relation to the first housing 2 and the second housing 3, respectively.
- the displaceable wedge elements 41, 42 may be displaceable in essentially perpendicularly to the motion direction of the second housing 3 in relation to the first housing 2. Depending on the position of the wedge elements 41, 42 to one another, the motion of the second housing 3 in relation to the first housing 2 may be blocked in different positions.
- the displaceable wedge element 41, 42 is preferably spring-loaded in the direction of the diametrically opposite wedge element 41, 42 using a pre-tensioning device 43 when the paper feed cassette 1 is inserted. In this case, in the event of a motion of the second housing 3 in relation to the first housing 2 against the blocked motion direction, the displaceable wedge element 41, 42 is moved along, so that the action of the blocking device 4 in the particular position occurs essentially immediately.
- the blocking device 4 When the paper feed cassette 1 is removed, the blocking device 4 may be deactivated, through which unobstructed displacement of the second housing 3 in relation to the first housing 2 is made possible and the paper feed cassette 1 may be loaded with sheets.
- a driver element 46 which may be actuated when the paper feed cassette 1 is inserted, may be provided for activating the pre-tensioning device 43.
- first wedge elements 41 and multiple second wedge elements 42 are provided, second wedge elements 42 particularly being positioned in the region below the paper receiving device - in the inserted state.
- first wedge elements 41 are positioned so they are displaceable in relation to the first housing 2, these elements being connected to a guide element 44 and the guide element 44 being mounted so it is displaceable in the first housing 2.
- a tension element 45 is mounted so it is displaceable in the first housing 2, the tension element 45 also being displaceable in relation to the guide element 44.
- the guide element 44 and the tension element 45 are connected to one another using a first tension spring element 47.
- the tension element 45 is connected to the first housing 2 using a second tension spring element 48.
- the tension element 45 has the driver element 46.
- the tension element 45 is moved against the action of the second tension spring element 48 using the driver element 46.
- the first wedge elements 41 are spring-loaded against the second wedge elements 4% by the guide element 44 using the first tension spring element 47. If the second housing 3 is raised in relation to the first housing 2, a space is produced between the first wedge elements 41 and the second wedge elements 42, the first wedge elements 41 being displaced, because of the action of the first tension spring element 47, until the first wedge elements 41 engage again with the second wedge elements 42.
- the driver element 46 is disengaged and the tension element 45 is displaced by the action of the second tension spring element 48.
- the guide element is also displaced in such a way that the first wedge elements 41 are moved against the direction of the second wedge elements 42, the blocking device 4 being deactivated and the second housing 3 able to be moved freely in relation to the first housing 2.
- the second housing 3 may be mounted so it is movable in the first housing 2 using at least one lever arm 51, 52. A circular motion is predefined by the lever arm 51, 52, friction forces particularly being able to be kept low. In other embodiments of the paper feed cassette 1, the second housing 3 may also be movable along a slide rail or the like in relation to the first housing 2.
- the sheets may be positioned in the second housing 3 at a predefinable angle of incidence on the narrow side of the sheets, the motion of the second housing 3 in relation to the first housing 2 between an upper end position and a lower end position being essentially approximated by a straight line having the angle of incidence and the maximum deviation - measured perpendicularly to this straight line - being less than 1 cm, preferably less than 8 mm, particularly less than 5 mm.
- the motion occurs along a circuit, the circuit being approximated by the straight line having the angle of incidence.
- the deviations from the straight line are essentially a function of the lever length and the angle of incidence in this case.
- Reliable guiding of the sheets through the second housing 3 may be ensured if the second housing 3 has a floor 31 corresponding to the format of the sheets, two long side walls 32, and at least one narrow side wall 33.
- the narrow side wall 33 may be implemented as the rear wall and the diametrically opposite delimitation of the sheets may be implemented by the first housing 2.
- the implementation of angle of incidence in particular may be ensured by the first housing 2, as is shown in Figure 2.
- the dimensions predefined by the printer, the copy or, the fax machine, or the like and its paper receiving device may be maintained easily if the implementation of angle of incidence is ensured by the first housing 2, because of which no additional components are required by the second housing in the region in which the paper receiving device removes sheets.
- One front lever arm 51 and one rear lever arm 52 may be positioned on each of the long side walls 32, each two of the lever arms 51, 52 being positioned diametrically opposite and the lever arms 51, 52 having equal lever lengths. Using this positioning of the lever arms 51, 52, uniform motion of the second housing 3 in the first housing 2 is ensured and a stable construction is achieved. Furthermore, the rear lever arms 52 may preferably be connected to one another at their ends facing away from the second housing 3 using a connection element 53. Through this measure, especially uniform motion and especially stable construction may be achieved.
- An equalization element 54 for positioning the current uppermost sheet may be positioned between the first housing 2 and the second housing 3, reliable removal of the particular uppermost sheet by the paper receiving device being able to be ensured. Using the equalization element 54, it is ensured that, independently of the fill level of the second housing 3, the current uppermost sheet is positioned in the operating region of the paper receiving device. If sheets are removed from the second housing 3, the height of the uppermost sheet falls.
- the equalization element 54 may have an elongation which is a function of the total weight of the stack of sheets, it being able to be implemented as a spring element, for example.
- the altered height of the stack of sheets is thus compensated for, through which the height of the uppermost sheet may be kept approximately constant, at least for a part of the stack projecting above the second housing 3.
- the equalization element 54 it is sufficient if it is ensured that the current uppermost sheet is located in the operating region of the paper receiving device, this applying for a large number of different types of sheets, particularly paper, film, and cardboard. From a predefinable lower fill level of the second housing 3, the second housing 3 may be kept in the upper end position by the equalization element 54
- the equalization element 54 may also be implemented by a motion of the second housing 3 using the blocking device 4 or a lever mechanism, for example.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Unwinding Webs (AREA)
Abstract
Description
- The present invention relates to a paper feed cassette for a printer, a copier, a fax machine, or the like, having a first housing.
- Paper feed cassettes of this type offer a paper reserve to a printer, a copier, a fax machine, or the like, the paper feed cassettes working together with a paper receiving device, the paper stack being pressed down by the paper receiving device and the paper subsequently being received. The processable stack height of the paper is limited by the maximum travel height of the paper receiving device.
- The object of the present invention is to specify a paper feed cassette of the type described at the beginning, which avoids the known disadvantages and in which a quantity of paper exceeding the processable stack height of the paper receiving device may be provided.
- This is achieved according to the present invention in that a second housing for receiving sheets is positioned in the first housing, the second housing being mounted so it is movable in the first housing, and a blocking device is provided for a motion direction of the second housing in relation to the first housing.
- The advantage thus results that the second housing may be blocked in relation to the first housing by the blocking device when paper is removed, particularly when paper is removed against the force direction of the paper receiving device, through which yielding of the paper stack through the pressure of the paper receiving device is prevented and perfect functioning of the paper removal may be ensured.
- An elevated quantity of paper may thus be provided to a paper receiving device by the paper feed cassette according to the present invention, because of which paper has to be refilled less often. In this way, it may be ensured, particularly in the event of long absence, that a fax machine has a sufficient paper reserve and the danger of data loss because of a lack of output and/or memory capacity is significantly reduced.
- In a refinement of the present invention, the blocking device may have at least one first wedge element and at least one diametrically opposed wedge element, the first wedge element being assigned to the first housing in the second wedge element being assigned to the second housing, and the first wedge element is positioned so it is displaceable in relation to the first housing and/or the second wedge element is positioned so it is displaceable in relation to the second housing. The wedge elements represent a simple embodiment of the blocking device, automatic setting of the blocking device to the fill level of the paper feed cassette being able to be ensured through the displaceable positioning of at least one of the wedge elements.
- According to a further embodiment of the present invention, the displaceable wedge element may be spring-loaded using a pre-tensioning device in the direction of the diametrically opposing wedge element when the paper feed cassette is inserted. Through the pre-tensioning device, it may be ensured that the wedge elements are always engaged and the motion direction of the first housing in relation to the second housing is effectively blocked in the direction of the wedge elements.
- In a further embodiment of the present invention, a driver element for activating the pre-tensioning device, which may be actuated when the paper feed cassette is inserted, may be provided. Through the driver element, the activation of the pre-tensioning device may be caused easily without an additional operating procedure when the paper feed cassette is inserted, the blocking device being deactivated and refilling of sheets being made possible when the paper feed cassette is removed.
- Furthermore, the present invention relates to a paper feed cassette for a printer, a copier, a fax machine, or the like having a first housing.
- Paper feed cassettes of this type offer a paper reserve to a printer, a copier, a fax machine, or the like, the paper feed cassettes working together with a paper receiving device, the paper stack being pressed down by the paper receiving device and the paper subsequently being received. The processable stack height of the paper is limited by the maximum travel height of the paper receiving device.
- The object of the present invention is to specify a paper feed cassette of the type described at the beginning, which avoids the known disadvantages and in which a quantity of paper exceeding the processable stack height of the paper receiving device may be provided.
- This is achieved according to a second aspect of the present invention in that a second housing for receiving sheets is positioned in the first housing, the second housing being mounted in the first housing so it is movable using at least one lever arm.
- The advantage thus results that the second housing is easily movable in relation to the first housing, only slight friction occurring. Through the interaction of a paper receiving device with the second housing, the sheets of a paper stack may be completely removed using a paper receiving device whose travel height is less than the thickness of the paper stack. An increased quantity of paper may thus be provided to a paper receiving device by the paper feed cassette according to the present invention, because of which paper has to be refilled less often. In this way, it may be ensured, particularly in the event of long absence of an operator, that a fax machine has a sufficient paper reserve and the danger of data loss because of a lack of output and/or memory capacity is significantly reduced.
- In a refinement of the present invention, the sheets in the second housing may be positioned on the narrow side of the sheets at a predefinable angle of incidence, and the motion of the second housing in relation to the first housing may occur between an upper end position and a lower end position essentially along a circuit, the circuit approximating a straight line with the angle of incidence and the maximum deviation - measured perpendicularly to this straight line - being less than 1 cm, preferably less than 8 mm, particularly less than 5 mm, through which the sheets may be provided uniformly over the entire stack height and reliable removal by a paper receiving device may be ensured.
- According to another embodiment of the present invention, the second housing may have a floor corresponding to the format of the sheets, two long side walls, and at least one narrow side wall. In this way, reliable guiding of the sheets in the second housing may be ensured.
- In a further implementation of the present invention, one front lever arm and one rear lever arm may be positioned on each of the long side walls, each two of the lever arms being positioned diametrically opposite and the lever arms having equal lever lengths, through which uniform and reliable motion of the second housing in relation to the first housing may be ensured.
- In this connection, in a refinement of the present invention, the rear lever arms may be connected to one another using a connection element at their ends facing away from the second housing. Through the connection element, a high stability of the mounting of the second housing in the first housing and a high uniformity of the relative motion may be ensured.
- In a further embodiment of the present invention, an equalization element for positioning the current uppermost sheet may be positioned between the first housing and the second housing. If sheets are removed from the second housing, the height of the uppermost sheet falls. Through the equalization element, this height may be compensated for, through which the height of the uppermost sheet is kept approximately constant for at least a part of the stack projecting over the second housing, and reliable removal of the uppermost sheet via the paper receiving device may be ensured.
- According to a further embodiment of the present invention, a blocking device as described at the beginning may be provided, through which the motion of the second housing in relation to the first housing may be blocked easily if necessary.
- The present invention will be described in greater detail with reference to the attached drawing, in which an embodiment is shown.
- Figure 1 shows a paper feed cassette according to the present invention in section;
- Figure 2 shows a diagonal view of the first housing shown in Figure 1;
- Figures 3 through 5 show diagonal views of the second housing shown in Figure 1;
- Figure 6 shows an enlarged illustration of the front part of the second housing; and
- Figure 7 shows an enlarged illustration of the front part of the second housing, additional first wedge elements being shown.
- An embodiment of a paper feed cassette 1 according to the present invention having a
first housing 2 is shown in Figures 1 through 7. The paper feed cassette 1 is suitable for use with a printer, a copier, a fax machine, or similar devices which remove sheets from a supply stack. Asecond housing 3 for receiving sheets is positioned in thefirst housing 2, thesecond housing 3 being mounted so it is movable in thefirst housing 2. Through the motion of thesecond housing 3, the sheets received in thesecond housing 3 may be moved in relation to thefirst housing 2. The sheets may be made of paper, cardboard, a film, or other materials typical for such devices. - Furthermore, a
blocking device 4 for a motion direction of thesecond housing 3 in relation to thefirst housing 2 is provided. Using theblocking device 4, in the embodiment shown, the downward motion of thesecond housing 3 in thefirst housing 2 may be blocked. When sheets are removed from the paper feed cassette 1 by a paper receiving device, the paper receiving device presses thesecond housing 3 in the direction of thefirst housing 2, thesecond housing 3 being held by theblocking device 4. In this case, it is sufficient if the maximum travel height of the paper receiving device corresponds to the depth of thesecond housing 3. If a paper feed cassette 1 is filled completely, thesecond housing 3 is positioned lowered in thefirst housing 2 and the stack of sheets projects over thesecond housing 3, Durirlg removal by the paper receiving device, only a slight travel is necessary, since the travel motion executed is limited by the stack itself. If the height of the stack is greater than the maximum travel height of the paper receiving device, if thesecond housing 3 is connected fixed to thefirst housing 2, only a part of the stack may be removed. In the paper feed cassette 1, thesecond housing 3 is positioned so it is movable in thefirst housing 2. If thesecond housing 3 is raised in relation to thefirst housing 2, it may be ensured that the paper receiving device may engage the uppermost sheet of the stack, even if the stack only comprises one sheet. Using theblocking device 4, unintentional displacement of thesecond housing 3 in relation to thefirst housing 2 by the paper receiving device may be prevented, so that only the depth of the second housing is active in relation to the paper receiving device. In this way, using the paper feed cassette 1, a stack of sheets which is higher than the maximum travel height of the paper receiving device may be processed by the paper receiving device. - The
blocking device 4 may have at least onefirst wedge element 41 and at least one diametrically oppositesecond wedge element 42, thefirst wedge element 41 being assigned to thefirst housing 2 and thesecond wedge element 42 being assigned to thesecond housing 3. In the embodiment shown, thefirst wedge element 41 is positioned so it is displaceable in relation to thefirst housing 2. In other embodiments, thesecond wedge element 42 may also be positioned so it is displaceable in relation to thesecond housing 3. However, both thefirst wedge element 41 and thesecond wedge element 42 may be positioned so they are displaceable in relation to thefirst housing 2 and thesecond housing 3, respectively. - In this case, the
displaceable wedge elements second housing 3 in relation to thefirst housing 2. Depending on the position of thewedge elements second housing 3 in relation to thefirst housing 2 may be blocked in different positions. - The
displaceable wedge element opposite wedge element pre-tensioning device 43 when the paper feed cassette 1 is inserted. In this case, in the event of a motion of thesecond housing 3 in relation to thefirst housing 2 against the blocked motion direction, thedisplaceable wedge element blocking device 4 in the particular position occurs essentially immediately. - When the paper feed cassette 1 is removed, the
blocking device 4 may be deactivated, through which unobstructed displacement of thesecond housing 3 in relation to thefirst housing 2 is made possible and the paper feed cassette 1 may be loaded with sheets. In this case, adriver element 46, which may be actuated when the paper feed cassette 1 is inserted, may be provided for activating thepre-tensioning device 43. - The mode of operation of a preferred embodiment of the
blocking device 4 may be seen in Figure 6. In this case, multiplefirst wedge elements 41 and multiplesecond wedge elements 42 are provided,second wedge elements 42 particularly being positioned in the region below the paper receiving device - in the inserted state. In this embodiment, thefirst wedge elements 41 are positioned so they are displaceable in relation to thefirst housing 2, these elements being connected to aguide element 44 and theguide element 44 being mounted so it is displaceable in thefirst housing 2. Furthermore, atension element 45 is mounted so it is displaceable in thefirst housing 2, thetension element 45 also being displaceable in relation to theguide element 44. Theguide element 44 and thetension element 45 are connected to one another using a firsttension spring element 47. Furthermore, thetension element 45 is connected to thefirst housing 2 using a secondtension spring element 48. Furthermore, thetension element 45 has thedriver element 46. - When the paper feed cassette 1 is inserted, the
tension element 45 is moved against the action of the secondtension spring element 48 using thedriver element 46. In this case, thefirst wedge elements 41 are spring-loaded against thesecond wedge elements 4% by theguide element 44 using the firsttension spring element 47. If thesecond housing 3 is raised in relation to thefirst housing 2, a space is produced between thefirst wedge elements 41 and thesecond wedge elements 42, thefirst wedge elements 41 being displaced, because of the action of the firsttension spring element 47, until thefirst wedge elements 41 engage again with thesecond wedge elements 42. - If the paper feed cassette 1 is removed from the printer, the copier, the fat machine, or the like, the
driver element 46 is disengaged and thetension element 45 is displaced by the action of the secondtension spring element 48. In this case, the guide element is also displaced in such a way that thefirst wedge elements 41 are moved against the direction of thesecond wedge elements 42, the blockingdevice 4 being deactivated and thesecond housing 3 able to be moved freely in relation to thefirst housing 2. - The
second housing 3 may be mounted so it is movable in thefirst housing 2 using at least onelever arm lever arm second housing 3 may also be movable along a slide rail or the like in relation to thefirst housing 2. - Through the
lever arms second housing 3 in relation to thefirst housing 2, the axes of rotation being able to be implemented by projections molded onto thelever arms first housing 2 and/or thesecond housing 3. In this case the construction may be manufactured.having a small overall volume from components which are simple to implement, particularly one-piece plastic parts. - The sheets may be positioned in the
second housing 3 at a predefinable angle of incidence on the narrow side of the sheets, the motion of thesecond housing 3 in relation to thefirst housing 2 between an upper end position and a lower end position being essentially approximated by a straight line having the angle of incidence and the maximum deviation - measured perpendicularly to this straight line - being less than 1 cm, preferably less than 8 mm, particularly less than 5 mm. In an embodiment havinglever arms - Reliable guiding of the sheets through the
second housing 3 may be ensured if thesecond housing 3 has afloor 31 corresponding to the format of the sheets, twolong side walls 32, and at least onenarrow side wall 33. In this case, thenarrow side wall 33 may be implemented as the rear wall and the diametrically opposite delimitation of the sheets may be implemented by thefirst housing 2. The implementation of angle of incidence in particular may be ensured by thefirst housing 2, as is shown in Figure 2. - In this case, the dimensions predefined by the printer, the copy or, the fax machine, or the like and its paper receiving device may be maintained easily if the implementation of angle of incidence is ensured by the
first housing 2, because of which no additional components are required by the second housing in the region in which the paper receiving device removes sheets. - One
front lever arm 51 and onerear lever arm 52 may be positioned on each of thelong side walls 32, each two of thelever arms lever arms lever arms second housing 3 in thefirst housing 2 is ensured and a stable construction is achieved. Furthermore, therear lever arms 52 may preferably be connected to one another at their ends facing away from thesecond housing 3 using aconnection element 53. Through this measure, especially uniform motion and especially stable construction may be achieved. - An
equalization element 54 for positioning the current uppermost sheet may be positioned between thefirst housing 2 and thesecond housing 3, reliable removal of the particular uppermost sheet by the paper receiving device being able to be ensured. Using theequalization element 54, it is ensured that, independently of the fill level of thesecond housing 3, the current uppermost sheet is positioned in the operating region of the paper receiving device. If sheets are removed from thesecond housing 3, the height of the uppermost sheet falls. In this case, theequalization element 54 may have an elongation which is a function of the total weight of the stack of sheets, it being able to be implemented as a spring element, for example. Using theequalization element 54, the altered height of the stack of sheets is thus compensated for, through which the height of the uppermost sheet may be kept approximately constant, at least for a part of the stack projecting above thesecond housing 3. For the precision requirement of theequalization element 54, it is sufficient if it is ensured that the current uppermost sheet is located in the operating region of the paper receiving device, this applying for a large number of different types of sheets, particularly paper, film, and cardboard. From a predefinable lower fill level of thesecond housing 3, thesecond housing 3 may be kept in the upper end position by theequalization element 54 - In other embodiments, the
equalization element 54 may also be implemented by a motion of thesecond housing 3 using theblocking device 4 or a lever mechanism, for example.
Claims (11)
- A paper reed cassette (1) for a printer, a copier, a fax machine, or the like, having a first housing (2), characterized in that a second housing (3) for receiving sheets is positioned in the first housing (2), the second housing (3) being mounted so it is movable in the first housing (2), and a blocking device (4) is provided for a motion direction of the second housing (3) in relation to the first housing (2).
- The paper feed cassette (1) according to Claim 1, characterized in that the blocking device (4) has at least one first wedge element (41) and at least one diametrically opposite second wedge element (42), the first wedge element (41) being assigned to the first housing (2) and the second wedge element (42) being assigned to the second housing (3), and the first wedge element (41) is positioned so it is displaceable in relation to the first housing (2) and/or the second wedge element (42) is positioned so it is displaceable in relation to the second housing (3).
- The paper feed cassette (1) according to Claim 2, characterized in that the displaceable wedge element (41, 42) is spring-loaded using a pre-tensioning device (43) in the direction of the diametrically opposite wedge element (41, 42) when the paper feed cassette (1) is inserted.
- The paper feed cassette (1) according to Claim 3, characterized in that a driver element (46), which may be actuated when the paper feed cassette (1) is inserted, is provided for activating the pre-tensioning device (43).
- A paper feed cassette (1) for a printer, a copier, a fax machine, or the like, having a first housing (2), characterized in that a second housing (3) for receiving sheets is positioned in the first housing (2), the second housing (3) being mounted so it is movable in the first housing (2) using at least one lever arm (51, 52).
- The paper feed cassette (1) according to Claim 5, characterized in that the sheets in the second housing (3) may be positioned with a predefinable angle of incidence on the narrow side of the sheets, and the motion of the second housing (3) in relation to the first housing (2) occurs essentially along a circuit between an upper end position and a lower end position, the circuit being approximated by a straight line having the angle of incidence and the maximum deviation - measured perpendicular to this straight line - being less than 1 cm, preferably less than 8 mm, particularly less than 5 mm.
- The paper feed cassette (1) according to Claim 5 or 6, characterized in that the second housing (3) has a floor (31) corresponding to the format of the sheets, two long side walls (32), and at least one narrow side wall (33).
- The paper feed cassette (1) according to Claim 7, characterized in that one front lever arm (51) and one rear lever arm (52) is positioned on each of the long side walls (32), each two of the lever arms (51, 52) being positioned diametrically opposite and the lever arms (51, 52) having equal lever lengths.
- The paper feed cassette (1) according to Claim 8, characterized in that the rear lever arms (52) are connected to one another using a connection element (53) on their ends facing away from the second housing (3).
- The paper feed cassette (1) according to one of Claims 5 through 9,
characterized in that an equalization element (54) for positioning the current uppermost sheet is positioned between the first housing (2) and the second housing (3). - The paper feed cassette (1) according to one of Claims 5 through 10,
characterized in that a blocking device (4) according to one of Claims 1 through 4 is provided.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT05290464T ATE395285T1 (en) | 2005-03-02 | 2005-03-02 | PAPER TRANSPORT CASSETTE |
DE602005006725T DE602005006725D1 (en) | 2005-03-02 | 2005-03-02 | Paper feed cassette |
EP05290464A EP1698576B1 (en) | 2005-03-02 | 2005-03-02 | Paper feed cassette |
ES05290464T ES2307123T3 (en) | 2005-03-02 | 2005-03-02 | PAPER FEEDING BOX. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05290464A EP1698576B1 (en) | 2005-03-02 | 2005-03-02 | Paper feed cassette |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1698576A1 true EP1698576A1 (en) | 2006-09-06 |
EP1698576B1 EP1698576B1 (en) | 2008-05-14 |
Family
ID=34941977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05290464A Expired - Fee Related EP1698576B1 (en) | 2005-03-02 | 2005-03-02 | Paper feed cassette |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1698576B1 (en) |
AT (1) | ATE395285T1 (en) |
DE (1) | DE602005006725D1 (en) |
ES (1) | ES2307123T3 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989236A (en) * | 1973-12-13 | 1976-11-02 | Canon Kabushiki Kaisha | Copying machine |
EP0296820A2 (en) * | 1987-06-26 | 1988-12-28 | Xerox Corporation | Sheet feed apparatus |
DE3844325A1 (en) * | 1988-12-27 | 1990-06-28 | Mannesmann Ag | DEVICE FOR THE INPUT OF SINGLE SHEETS IN OFFICE MACHINES, ESPECIALLY IN MATRIX PRINTERS |
EP0398220A2 (en) * | 1989-05-15 | 1990-11-22 | Sharp Kabushiki Kaisha | Sheet supplying device |
JPH082705A (en) * | 1994-06-16 | 1996-01-09 | Canon Inc | Paper feeding device |
EP0700851A1 (en) * | 1994-08-30 | 1996-03-13 | Canon Kabushiki Kaisha | A sheet feeding device intended to be mounted on an image-forming apparatus |
JP2001301994A (en) * | 2000-04-25 | 2001-10-31 | Minolta Co Ltd | Sheet feeding device |
US6364309B1 (en) * | 1999-08-30 | 2002-04-02 | Brother Kogyo Kabushiki Kaisha | Sheet accommodating device |
US20040000750A1 (en) * | 2002-03-29 | 2004-01-01 | Todd Douglas John | Media tray for imaging apparatus |
-
2005
- 2005-03-02 AT AT05290464T patent/ATE395285T1/en active
- 2005-03-02 EP EP05290464A patent/EP1698576B1/en not_active Expired - Fee Related
- 2005-03-02 ES ES05290464T patent/ES2307123T3/en active Active
- 2005-03-02 DE DE602005006725T patent/DE602005006725D1/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989236A (en) * | 1973-12-13 | 1976-11-02 | Canon Kabushiki Kaisha | Copying machine |
EP0296820A2 (en) * | 1987-06-26 | 1988-12-28 | Xerox Corporation | Sheet feed apparatus |
DE3844325A1 (en) * | 1988-12-27 | 1990-06-28 | Mannesmann Ag | DEVICE FOR THE INPUT OF SINGLE SHEETS IN OFFICE MACHINES, ESPECIALLY IN MATRIX PRINTERS |
EP0398220A2 (en) * | 1989-05-15 | 1990-11-22 | Sharp Kabushiki Kaisha | Sheet supplying device |
JPH082705A (en) * | 1994-06-16 | 1996-01-09 | Canon Inc | Paper feeding device |
EP0700851A1 (en) * | 1994-08-30 | 1996-03-13 | Canon Kabushiki Kaisha | A sheet feeding device intended to be mounted on an image-forming apparatus |
US6364309B1 (en) * | 1999-08-30 | 2002-04-02 | Brother Kogyo Kabushiki Kaisha | Sheet accommodating device |
JP2001301994A (en) * | 2000-04-25 | 2001-10-31 | Minolta Co Ltd | Sheet feeding device |
US20040000750A1 (en) * | 2002-03-29 | 2004-01-01 | Todd Douglas John | Media tray for imaging apparatus |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 05 31 May 1996 (1996-05-31) * |
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 02 2 April 2002 (2002-04-02) * |
Also Published As
Publication number | Publication date |
---|---|
ATE395285T1 (en) | 2008-05-15 |
DE602005006725D1 (en) | 2008-06-26 |
ES2307123T3 (en) | 2008-11-16 |
EP1698576B1 (en) | 2008-05-14 |
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