Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/00519—Constructional details not otherwise provided for, e.g. housings, covers
  • H04N1/00525—Providing a more compact apparatus, e.g. sheet discharge tray in cover
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/00519—Constructional details not otherwise provided for, e.g. housings, covers
  • H04N1/00525—Providing a more compact apparatus, e.g. sheet discharge tray in cover
  • H04N1/00535—Providing a more compact apparatus, e.g. sheet discharge tray in cover using rotatably mounted or foldable components
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
  • H04N1/0057—Conveying sheets before or after scanning
  • H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
  • H04N1/00575—Inverting the sheet prior to refeeding
  • H04N1/00583—Inverting the sheet prior to refeeding by rotating the sheet about an axis lying in its plane
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
  • H04N1/0057—Conveying sheets before or after scanning
  • H04N1/00618—Transporting curved sheets or curving sheets during transportation, e.g. for feeding to a drum-type scanner
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
  • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
  • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
  • H04N1/1017—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
  • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
  • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
  • H04N1/121—Feeding arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
  • H04N2201/0096—Portable devices
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
  • H04N2201/04—Scanning arrangements
  • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
  • H04N2201/0464—Self-propelled scanners, e.g. robotic scanners, means for propulsion integrated in the scanner carriage

Definitions

• This invention generally relates to imaging apparatus for documents and more particularly relates to an imaging apparatus having a tiltable paper path.
• the optical scanner for scanning and recording documents is one well-known type of imaging apparatus.
• An optical scanner typically includes a scanning station having an optical reading element, a light source, and a platen formed from glass or transparent plastic for maintaining the scanned portion of the document in a flat position, hi operation, optical data from the document is transmitted from the optical reading element to one or to several buffer memories that temporarily store the data for further processing, typically with compression of the scan data.
• the optical scanner thus transforms text and image markings that have been recorded on the scanned document to image data, providing the image data as its output.
• a printing apparatus By comparison with an optical scanner, a printing apparatus operates in the complementary direction, transforming image data at its input to printed text and image markings that are recorded onto the sheet substrate to form the document.
• portable printers are used in desktop and workgroup printing environments, for imaging by forming a document onto a substrate.
• Portable printers in this general class include, for example, ink jet printers, laser printers, and thermal printers, along with other types of printers that could be used.
• the image data transformation apparatus is stationary and the document sheet is scanned past the image data transformation apparatus, either for image recording or for optical scanning.
• Sheet-fed operation has advantages for automated operation and compactness in many applications and is well suited to line-by-line image sensing by a linear array of optical sensors in a scanner, as well as to line-by-line marking by a linear or linearly actuated printhead.
• a sheet-fed imaging apparatus can be used to scan or print single sheet documents or to successively pull one sheet at a time from a stack of sheets for scanning or printing, making this device better suited for applications where volume is important.
• U.S. Patent No. 6,233,064 (Griffin) describes a flatbed scanner capable of being placed for operation in a vertical position; and U. S. Patent No. 5,903,364 (Shih-Min) describes a scanner having a base plate with inclined surfaces that support the scanner unit in one of a number of different positions.
• a reduced-footprint sheet-fed scanner the DR- 2050C scanner from Canon Electronics Inc., Saitaraa, Japan, has been introduced for desktop environments.
• the paper travel path is generally vertical, unlike conventional types of sheet-fed scanners. This vertical orientation may be acceptable for single-sheet scanning and for front-loading.
• the vertical paper path orientation is inherently disadvantaged for sheet feeding from a stack of sheets, particularly if the stack has sheets of varying thickness, for longer length sheets, where there are creases or inherent curl to the sheets, or where the paper stock for one or more sheets is relatively thin.
• Documents can tip over or even fall out of the feed tray when vertically oriented. Where sheets exit a paper handling mechanism at a steep vertical angle, there is tendency to curl. This tendency may not pose a problem when scanning a single sheet, but is increasingly cumbersome where a stack of sheets must be scanned, causing exiting sheets to jam together and to be out of order or skewed, often requiring manual resorting or other operator intervention.
• the use of an output tray is not optimal with paper exit at a steep angle.
• paper handling works most smoothly where the stack of sheets lie atop each other at such an inclination.
• paper path orientation at or close to vertical makes the task of paper handling considerably more complex and trouble- prone when scanning more than one sheet or longer sheets.
• the demands on the paper handling components are heightened with the pressure to improve desktop scanner and printer performance and provide faster document processing speeds.
• efforts are underway to provide workgroup scanners with faster paper handling, using solutions that had been previously applied for higher volume production scanners.
• a document imaging apparatus comprising an imager body that houses: a) an image data transformation apparatus for recording document data; b) a paper feed apparatus for urging a document sheet along a paper path from a paper feed input source, past the image data transformation apparatus, to an output slot; and wherein the imager body is pivotably coupled to a support pedestal for adjusting the tilt angle of the imager body to one of a plurality of tilt angle positions.
• the paper path tilt angle adjusts to a position selectable by an operator.
• Figure 1 is a perspective view of the document imaging apparatus of the present invention in one embodiment
• Figure 2 is a side view of the document imaging apparatus showing locations of internal components
• Figure 3 is a side view of the document imaging apparatus tilted to a near- vertical position
• Figure 4 is a side view of the document imaging apparatus tilted to an intermediate tilt position
• Figure 5 is a side view of the document imaging apparatus tilted to a near-horizontal position
• Figure 6 is a perspective view of the document imaging apparatus, from a stack loading position
• Figure 7 is a side view of the document imaging apparatus, with the top tray folded down;
• Figure 8 is a perspective close-up view showing a locking tilt mechanism in one embodiment
• Figure 9 is a perspective view showing a latch mechanism in an alternate embodiment.
• FIG. 10 is a block diagram showing overall functions of a document imaging apparatus according to the present invention. DETAILED DESCRIPTION OF THE INVENTION
• document imaging apparatus refers to the large class of devices that are either used for recording document data in either of two directions: (i) recording images and other types of human-readable information onto a sheet of substrate to form a document according to image data, or (ii) obtaining and recording machine-readable image data from a document sheet by optical scanning.
• Devices for recording human-readable information onto a document sheet include various types of printer apparatus, such as inkjet, thermal, photographic, laser, and line printers, for example.
• printer apparatus such as inkjet, thermal, photographic, laser, and line printers, for example.
• Devices for obtaining and recording machine-readable image data are generally classified as scanners.
• the term scanner generally applies to a device that optically scans a document to obtain and record machine-readable image data signals representative of the content of the document.
• the term scanner thus comprises not only the various types of flat platen and paper feed desktop scanners described in the Background section given earlier, but also comprises applicable portions of facsimile apparatus, commonly called fax machines, copier apparatus, and other similar devices, including devices that combine these image capture, reproduction, and transmission functions.
• sheet documents can be scanned, including items such as text documents and forms, banking and legal transaction documents, applications, photographs and other images, artwork, and identification documents such as credit cards, driver's licenses, ID badges, and the like.
• a printer it also applies to a device that includes a printing or marking apparatus as a component, such as facsimile apparatus, for example.
• a lower-cost desktop or workgroup document imaging apparatus 10 such as a printer or scanner is typically connected to a control logic processor 50 such as a computer workstation of some type and may be used in any of a number of different environments.
• Control logic processor 50 typically has supporting image data storage 52 for reading or writing the image data that is being recorded to or from a document 48 by document imaging apparatus 10.
• an operator uses a workgroup scanner to scan a single sheet document, such as an identification document. Alternately, an operator may periodically print a single page form or other type of "on-demand" document.
• front feeding with the operator standing by is typical for this type of scanning or printing.
• a vertical paper path orientation would be quite suitable for a sheet-fed document imaging apparatus in this type of application.
• a workgroup scanner could be used to scan documents that are fed from a stack, such as in an environment where bank checks or multi-page forms are scanned.
• a printing apparatus could be configured to serve multiple users on a network.
• a paper path inclined more closely toward the horizontal would be much preferred. It can be appreciated that there would be particular advantages to a scanner or printer design that could serve both single-feed and stack-feed environments, adapting readily to the document imaging job at hand, easily adjusted into position by the operator, and requiring only a minimal footprint at the same time.
• An imager body 12 houses the paper feed mechanism and one or more image data transformation components for recording document data in a scanned manner, such as a printhead for recording an image according to image data or scanning camera optics and sensing components needed to obtain and record the scanned image data.
• Imager body 12 has a paper feed input source 14 and an output slot 16 for paper exit.
• a control panel 18 has the necessary operator controls typical for desktop or workgroup operation of document imaging apparatus 10, such as on-line/off-line controls, scanner or printer mode controls and selections, begin and cancel controls, and the like.
• Imager body 12 is mechanically coupled to a support base or pedestal 20 in a pivotal manner.
• a pivoting mechanism 22 provides a pivotal coupling that allows the tilt angle of imager body 12 to be optimally adjusted for various types of use.
• An optional output tray 32 may be provided, fitted either into imager body 12 or support pedestal 20, as described subsequently.
• An input tray 24 folds upward to support input document sheets where necessary; input tray 24 can also be folded down against imager body 12, particularly where only single-sheet feeding is needed.
• imager body 12 pivotably coupled to support pedestal 20 is particularly advantaged for allowing easy access to internal document imaging apparatus components along the paper path.
• the side view of Figure 2 shows one embodiment in which imager body 12 has a first section 26 and a second section 28, which may be hinged together near output slot 16 and having a detachable latch 30 of some type, such as near paper feed input source 14.
• imager body 12 acts as a scanner, providing duplex scanning.
• a first image data transformation apparatus 34 is a scanning camera assembly for scanning one side of a document to record document image data therefrom.
• a second image data transformation apparatus 34 is a scanning camera assembly for scanning the opposite side of a document. When configured for scanning, image data transformation apparatus 34 can use a CCD camera component or a CMOS sensing component, for example.
• image data transformation apparatus 34 may operate in one of two directions to record document data, either to extract image data for recording from an image or to record an image from image data by printing or marking the document in some manner.
• the document is moved at a controlled speed past image data transformation apparatus 34 where the transformation to or from image data occurs.
• image data transformation apparatus 34 may be a marking module or element for recording an image, such as a printhead.
• a printhead typically, only one printhead is used so that a single image data transformation apparatus 34 would be provided for a printer; however, a two-sided printing embodiment could employ first and second image data transformation apparatus 34 as printheads, as shown in Figure 2.
• a paper feed apparatus 36 provides single-sheet feeding for documents fed from paper feed input source 14. Paper feed apparatus 36 may urge document sheets for scanning along the paper path using a clutched feed drive, for example. With the hinged arrangement shown, these internal optical and paper feeding components, along with other components such as start-of- sheet/end-of-sheet sensors and auxiliary rollers for example, can be easily accessed for cleaning, clearing jams, or checking operation.
• FIG. 3 The side views of Figures 3, 4, and 5 show how the pivotal coupling provided by pivoting mechanism 22 allows document imaging apparatus 10 to be oriented in a suitable position for the type of imaging that is needed.
• a paper path is designated P and traced with a dashed line in these Figures.
• the term "paper path” has its standard connotation and defines the path the document sheet moves along within the document imaging apparatus 10, whether or not the document itself is paper, plastic, or some other non-paper material or hybrid material.
• paper path P has a substantially vertical orientation within imager body 12. As noted earlier, this is often a preferred orientation for front-feeding when scanning or printing only one sheet.
• the sharp bend following output slot 16, as paper path P exits imager body 12 and veers to the horizontal, is a potential source of problems for smooth paper handling and can be more likely to cause curl with longer sheets or with folded sheets, for example.
• the Figure 3 orientation advantageously provides the minimum footprint. For reduction of both footprint and height, hinged input tray 24 can be lowered against imager body 12, as shown in the side view of Figure 7.
• paper path P has an orientation inclined more toward the horizontal. As noted earlier, this position is more favorable for sheet feeding from a stack of sheets, providing better sheet pick-up and separation at paper feed input source 14. This intermediate position also provides a reasonably smooth output portion of paper path P, so that proper stacking of scanned or printed sheets is more likely than with the Figure 3 arrangement.
• the effective footprint with this orientation is larger than that shown in Figure 3, but not quite as large as would be needed for a horizontally disposed unit.
• paper path P is optimized for paper handling. At paper feed input source 14, separation and sheet pick-up work best. At output slot 16, paper path P inclines gently toward horizontal, providing the optimum stacking arrangement for many types of documents. Ergonomically, this is the optimal rear-feeding orientation for scanning. This is also typically the best arrangement for unattended printing, with a stack of unprinted media loaded in input tray 24. However, this arrangement is not optimized for footprint, particularly where input tray 24 and output tray 32 are extended as shown.
• Figure 6 shows a perspective view of document imaging apparatus 10 from the rear- feeding position.
• Output tray 32 can be positioned or seated in any of a number of positions.
• output tray 32 can be fitted beneath support pedestal 20; this would be an advantageous arrangement at the near-vertical orientation of Figure 3.
• Output tray 32 can also be fitted into support pedestal 20; this arrangement would be advantageous in the intermediate orientation of Figure 4.
• output tray 32 can be fitted into imager body 12; this would be a practical arrangement when using the near-horizontal orientation of Figure 5.
• Pivoting mechanism 22 can take any of a number of forms. In the embodiment of Figures 1-7, pivoting mechanism 22 uses components from both imager body 12 and support pedestal 20. With reference to Figures 2 and 8, for example, a circular track 38 is provided in support pedestal 20. A mating circular flange 40 on imager body 12 seats within track 38 in an interlocking fashion that allows pivoting movement about a pivot point C. A latch mechanism 42 allows tilting of imager body 12 to one of a number of fixed positions, such as those shown in Figures 3-5. In one embodiment, fixed tilt positions of about 65, 52, and 25 degrees relative to horizontal are provided, roughly corresponding to the tilt positions shown in the examples of Figures 3, 4, and 5.
• latch mechanism 42 can be designed to lock imager body 12 into a tilt position, so that this position is maintained during scanning or printing or during cleaning or other access to internal parts, as shown in Figure 2.
• Latch mechanism 42 shown in the embodiment of pivoting mechanism 22 of Figure 8 has the advantage of maintaining a minimal footprint.
• latch mechanism 42 Possible alternatives to latch mechanism 42 include various types of tightening mechanisms that would allow continuous adjustment of tilt angle, rather than discrete, fixed-position adjustment.
• support pedestal 20 has arms 44 extending upwards to support pivot points C, with suitable adjustment knobs 46, based on a standard threaded-fastener model, that are loosened to tilt imager body 12 to an appropriate position, then tightened to hold this position.
• This type of latch mechanism 42 allows adjustment over a continuous range of angles. Such an arrangement, however, may not be as advantageous to the dimensional footprint of document imaging apparatus 10 as is the embodiment of Figures 1-8.
• imager body 12 When imager body 12 is configured as a printer body, the apparatus and method of the present invention are compatible with printheads that form a line of the image at a time. When imager body 12 is configured as a scanner body, the apparatus and method of the present invention are compatible with scanning optics of various types, including components using CCD or CMOS sensors for high speed and lower cost or those using the more expensive and slower contact arrays.
• a variety of paper handling components could be used for urging the document sheet along paper path P as part of paper feed apparatus 36.
• Either single-side or duplex scanning or printing can be provided, as well as both printing and scanning functions, each provided using a separate image data transformation apparatus 34.
• document imaging apparatus 10 could be used to scan or print a full range of media types.
• Document sheets can be any of a number of types of materials, including paper, plastic, and hybrid combinations of paper and plastic, for example.
• Document sheet materials could be of various sizes and could be transparent, opaque, photosensitive, or have other suitable properties.
• Tilt angle adjustment of imager body 12 could be effected using any of a number of different types of pivoting mechanisms 22, including automated mechanisms that set or reset tilt position according to programmed instructions or to sensed conditions, such as document type, paper stack thickness, or timeouts, for example.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Facsimiles In General (AREA)
• Facsimile Scanning Arrangements (AREA)
• Accessory Devices And Overall Control Thereof (AREA)

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Publications (1)

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Family Applications (1)

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Citations (5)

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• 2006
  • 2006-02-13 US US11/352,705 patent/US20070188818A1/en not_active Abandoned
• 2007
  • 2007-01-30 WO PCT/US2007/002541 patent/WO2007094958A1/en not_active Ceased
  • 2007-01-30 JP JP2008554267A patent/JP2009527143A/ja not_active Withdrawn
  • 2007-01-30 CN CNA2007800053577A patent/CN101385325A/zh active Pending
  • 2007-01-30 EP EP07717138A patent/EP1985102A1/en not_active Withdrawn
  • 2007-02-12 TW TW096105063A patent/TW200737931A/zh unknown

Patent Citations (5)

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