WO2008100260A1 - Détection de disque optique automatique - Google Patents

Détection de disque optique automatique Download PDF

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Publication number
WO2008100260A1
WO2008100260A1 PCT/US2007/004165 US2007004165W WO2008100260A1 WO 2008100260 A1 WO2008100260 A1 WO 2008100260A1 US 2007004165 W US2007004165 W US 2007004165W WO 2008100260 A1 WO2008100260 A1 WO 2008100260A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical disc
printing
carrier
disc
sensor
Prior art date
Application number
PCT/US2007/004165
Other languages
English (en)
Inventor
Stuart A. Scofield
Shane Shivji
Original Assignee
Hewlett-Packard Development Company, L.P.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2007/004165 priority Critical patent/WO2008100260A1/fr
Publication of WO2008100260A1 publication Critical patent/WO2008100260A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4071—Printing on disk-shaped media, e.g. CDs

Definitions

  • FIG. 1 is a perspective illustration of an exemplary embodiment of a printable disc carrier, according to principles described herein.
  • Fig. 2 is a simple block diagram illustrating an exemplary optical sensor, according to principles described herein.
  • FIG. 3 is a perspective illustration of an exemplary printable disc carrier being inserted into an exemplary printing device, according to principles described herein.
  • Fig. 4 is a diagram illustrating an exemplary optical sensor scanning a printable disc mounted on an exemplary printable disc carrier, according to principles described herein.
  • FIG. 5 is a flowchart illustrating an exemplary method of printable disc detection in a printing device, according to principles described herein.
  • Fig. 6 is a flowchart illustrating an exemplary method of printable disc detection in a printing device, according to principles described herein.
  • a printing device or printer may be configured to print on more than one type of media, such as both paper and printable optical discs.
  • One method of printing images or text on a printable optical disc involves loading the optical disc onto a special carrier.
  • the carrier is designed to facilitate the passage of the disc through a printing device with minimal abrasion or scratching of the surface of the disc while holding the disc in place for printing.
  • the present specification describes exemplary methods and apparatus for automated optical disc detection in a disc carrier that is used to pass the disc through a printing device for printing.
  • the methods and apparatus permit a printing device to detect parameters such as presence, orientation and size of a printable disc inserted into the printing device in a carrier.
  • the automated detection may thus prevent printing errors caused by discrepancies between the characteristics of the printing media expected by the printing device and the characteristics of the printing media as provided to the printing device.
  • the present specification provides methods of allowing a user to override the perceived error and proceed with printing.
  • optical disc media or “optical disc” refers to any such media on which data is recorded optically or from which data is read optically.
  • optical disc examples include, but are not limited to, compact discs (CDs), digital video discs (DVDs), laser discs, and other digitally-encoded optical discs. These examples including CD-ROM discs, writeable and erasable compact discs, video game discs, etc.
  • disc carrier refers to an object configured to hold and/or anchor an optical disc as it is inserted into a device such as a printing device. The carrier may be separate and independent from the device or it may be an integral component of the device.
  • the exemplary carrier (100) for use in conjunction with an inkjet printer is illustrated.
  • the exemplary carrier (100) comprises a tabular body (105) designed to be inserted into a receiving slot of an inkjet printer (see Fig. 3).
  • the carrier (100) comprises a recess (115) into which an optical disc (110) may be inserted, thus "mounting" the optical disc (110) on the carrier (100).
  • the carrier (100) and disc (110) can be inserted in and/or passed through the inkjet printer or other printing device so that a desired label can be printed on a surface of the disc (110).
  • the optical disc carrier (100) may comprise a first end (120) configured to be inserted into the slot of the inkjet printer and a second end (125) configured to be held in a user's hand as the carrier (100) is inserted into the receiving slot of the printer.
  • an optical disc (110) may be anchored in position relative to the carrier (100).
  • a disc detection device in the printer can then scan the disc (110) thereby allowing accurate data to be collected regarding the physical properties and orientation of the optical disc (110).
  • the desired image or text may be precisely printed on the optical disc (110).
  • the optical disc carrier (100) may further comprise an adaptive frame (130) to adapt the optical disc carrier (100) to optical discs of a smaller diameter.
  • the frame (130) may be attached by a hinge to the carrier (100) and flip from one side to another of the carrier (100) according to the size of the optical disc (110) being mounted.
  • the carrier (100) is to detect the position of the adaptive frame (130) on the carrier (100), whether the adaptive frame (130) has been moved into the recess (115) that holds the optical disc (110) or is positioned out of the recess (115).
  • an exemplary optical sensor (200) may be used in conjunction with the principles described herein relating to the automatic detection of optical discs.
  • the optical sensor (200) may be incorporated into a printing device for the purpose of determining, when the carrier (100, Fig. 1) is inserted into the printing device, whether an optical disc is actually installed in the carrier as expected and whether an optical disc installed in the carrier is oriented properly with a label-receiving surface being presented for printing.
  • the optical sensor (200) may also determine the size of the disc.
  • the optical sensor (200) comprises a light emitting diode or LED (220) and two photo-detectors (210, 230), for example, phototransistors.
  • the light-emitting diode (220) is configured to produce a beam of light that may be directed to the surface of an optical disc (110, Fig. 1) installed in a carrier (100, Fig. 1).
  • the photo-detectors (210, 230) detect light from the LED (220) that is reflected back from the surface of the optical disc (110).
  • a first photo-detector (210) may be configured to detect specular light reflecting from the surface of the optical disc (110) and a second photo-detector (230) may be configured to detect diffuse reflected light.
  • Optical discs designed for printing generally have a white surface for the label-receiving or printing side which produces a diffuse reflection and a more shiny, specular surface on the other side or data side where the digital data stored on the disc is optically recorded. [0026] Therefore, the printing side of an optical disc will reflect a greater amount of diffuse light than specular light, and the data side of an optical disc will reflect a greater amount of specular light than diffuse light.
  • a comparison of the levels of diffuse and specular light detected by the respective photo-detectors (210, 230) provides an accurate determination of the orientation of the optical disc (110) in the carrier. Specifically, if the light reflected by the disc and received by the optical sensor (200) is predominantly diffuse, for example, above a predetermined threshold, the disc is considered properly installed in the carrier with the printing surface presented for printing. If, however, the light reflected by the disc and received by the optical sensor (200) is predominantly specular, for example, above a predetermined threshold, the disc is considered to have been installed in the carrier incorrectly with the data surface being improperly presented for printing.
  • the optical sensor (200) may be calibrated by adjusting the intensity of the light-emitting diode (220) until enough light is reflected from the optical disc (110, Fig. 1) that detection of the reflected light becomes possible. This calibration may be performed only during manufacture or may be a dynamic calibration that occurs each time the carrier is received in the printing device.
  • the color and depth properties of the optical disc carrier (100, Fig. 1) may be such that, without an optical disc present, little if any light from the light-emitting diode (220) is reflected back to . the photo-detectors (210, 230) of the optical sensor (200). This signals to the optical sensor (200) that the carrier (100, Fig. 1) has been inserted into the printing device without an optical disc. Consequently, printing on the empty carrier can be prevented. The optical sensor (200) may then signal the printing device to render the print engine inoperable until the error is corrected or an override is set.
  • the light-emitting diode (220) may be activated to direct light toward the optical disc carrier (100, Fig. 1). The intensity of the diode (220) may then be increased to confirm whether an optical disc is present. When a minimal threshold of light is reflected, the sensor (220) is considered calibrated. In some embodiments, if at least one of the photo-detectors (210, 230) detects enough reflected light from the light-emitting diode to allow a determination that either a printing or data side of the optical disc has been detected, it is then determined that the sensor (200) is calibrated and an optical disc (110, Fig. 1) is indeed present in the optical disc carrier (100, Fig. 1). If the sensor (200) cannot be calibrated as described here, there is likely no optical disc in the carrier.
  • the optical disc carrier (100, Fig. 1) may comprise at least one sensor target which is sought by the sensor (220) during calibration, parameter detection, or other operations.
  • the targets may include holes and polished surfaces.
  • the sensor (220) may detect reflected light off of one or more of the targets having known specular and diffuse properties and using the reflected light as a reference to calibrate the sensor (220). Once calibrated by this method, the sensor (220) may be tuned to detect the exact diffuse and specular properties of the carrier (100, Fig. 1) in spite of variations in the distance from the sensor to the carrier (100, Fig. 1) that may occur with different printing devices.
  • the targets may comprise certain properties detectable by the sensor (220) indicative of position on the carrier (100, Fig. 1) with respect to a coordinate axis system.
  • the position information from the targets may permit the sensor (220) to find an exact center of the carrier (100, Fig. 1), and by extension the exact center of an optical disc (110, Fig. 1).
  • the sensor (200) may also include a scanning mechanism (250).
  • the scanning mechanism (250) may move the sensor (200) over a disk (110, Fig. 1) in the carrier (100) to determine the size of the disc as described below.
  • the scanning mechanism (250) may simply redirect or scan the light from the LED (220) in a path across the disc (110, Fig. 1 ) to determine the disc's size or other properties.
  • the exemplary printing device may be an inkjet printer comprising a receiving slot (310) into which an optical disc carrier (100) may be inserted.
  • the printing device (300) may be configured to receive the optical disc carrier (100) in the receiving slot (310) in a front side of the printing device (300) and eject the carrier (100) through an ejection slot at the rear of the printing device (300).
  • the carrier (100) is removed out of the receiving slot (310) when printing is completed.
  • the printing device (300) comprises an optical sensor (200) as discussed above in relation to Fig. 2.
  • the printing device (300) may scan the carrier (100) with the optical sensor (200) to detect the presence, orientation, and size of an optical disc (110) that may be mounted on the carrier (100).
  • one or more printing heads (415) may selectively deposit liquid ink or other marking material (420) on the optical disc (110) to print the desired image or text on the label surface of the optical disc (110).
  • the printing device (300) of this embodiment is an inkjet printer, in other embodiments, the printing device (300) may be a laser printer, a liquid electrophotography printer, or other printing device.
  • the resources of the printing device may be most efficiently utilized if as much information as possible about the contents of the carrier is discerned. For example, printing on the disc may be prevented if the conditions are not suitable for printing. Suitable conditions for printing are defined as conditions in which the disc is present in the carrier and oriented properly, i.e., with a label size presented for printing, and the disc is of a size that corresponds to the print job to be rendered on that disc.
  • FIG. 5 an exemplary method (500) of automated optical disc detection is shown. This method allows information gathered from an optical sensor to be used in conjunction with feedback from a user to determine conditions under which an optical disc may be successfully printed by a printing device.
  • a disc carrier is first received (step 505) into a printing device.
  • the disc carrier allows the optical disc to be passed through the printing device without possibly abrasive contact between the disc and the components of the printing device. Additionally the disc carrier may anchor the optical disk into a set position to facilitate printing.
  • a parameter is then detected (step 510) relative to the disc or the disc carrier indicative of suitable printing conditions.
  • suitable printing conditions include, but are not limited to, optical disc presence, orientation, and size, among others.
  • the parameter it is then determined (step 515) if the detected parameter indicates suitable printing conditions.
  • the parameter detected is the presence of an optical disc, if it is found that no optical disc is in fact present in the optical disc carrier, conditions are determined to be unsuitable for printing. Conversely, if it is found that an optical disc is present in the carrier, potentially suitable printing conditions are indicated.
  • an upside-down disc would generally be determined to indicate unsuitable printing conditions, while a right-side up disc would generally indicate suitable printing conditions.
  • an upside- down disc is a disc inserted into the carrier such that a data side of the disc, rather than a label side of the disc, is presented for printing.
  • a right-side up disc is one properly installed in the carrier with a printing or label side being presented for printing.
  • the printing process is continued (step 520), which may include printing a label, e.g., any combination of images or text, on the optical disc.
  • the printing process may additionally include detecting one or more additional parameters (step 510) and determining (step 515) whether the additional parameters also indicate suitable printing conditions before actually printing on the optical disc.
  • a detected parameter indicating unsuitable printing conditions stems from a legitimate reason to cancel or delay the printing process, for example, the disc is not present or is installed upside-down in the carrier.
  • the printing device will print on the empty optical disc carrier, causing a waste of ink and a dirty optical disc carrier.
  • an image or text may be printed on the data side of the optical disc, thereby rendering the optical disc unsuitable for data retrieval purposes.
  • excess ink may be deposited on the optical disc carrier and the printed image may be incomplete on the disc.
  • the optical sensor may not be able to determine the presence, proper orientation, or size of an optical disc but a disc is nevertheless properly installed in the carrier.
  • the sensor may not be able to accurately detect the expected printing surface of the disc.
  • the disc may have a vinyl printing surface which again may not appear to the sensor as the expected printing surface.
  • Some discs may actually have a shiny printing surface that appears to the sensor like a data surface rather than a printing surface.
  • failure of the sensor or a sensor component may prevent the sensor from accurately detecting the presence and orientation of a properly loaded disc
  • the printing device may have a user interface through which the user can receive notification that an error in disc loading has been perceived and override that determination by the sensor that appropriate printing conditions do not exist. The printing device will then proceed to print that disc.
  • This override should also be accomplished without an excess of recurring error messages. Consequently, according to some embodiments, a user will only receive one error message per error, and, if the user overrides the error message, the user will not receive that error message again until after that error has been fixed and recurs, the disc carrier is reinstalled or the printing device is reset. [0047] In the event that the parameter detected is determined to indicate unsuitable printing conditions, a determination is made (step 525) as to whether the user has activated the override for that error condition, for example, by setting an override indicator for the parameter using the printing device's user interface.
  • the override indicator in some embodiments, is a bit stored in digital memory in the printing device.
  • the override indicator When the override indicator is enabled or "set,” the corresponding error or parameter is ignored and the printing process is continued (step 520). [0048] When it is determined that the override indicator is not set for a particular parameter, the optical disc carrier is ejected (step 530), giving the user the opportunity to remove and/or inspect the optical disc carrier or optical disc. The user is then prompted (step 535) to continue or cancel the printing process. If the user elects to cancel, the printing process is not carried out. In the event that the user elects to continue the printing process, the override indicator for the parameter detected is then set (step 540) and the optical disc carrier is received again into the printing device. This begins again the process of parameter detection (step 510) as part of the printing process.
  • Fig. 6 a more detailed flowchart of an exemplary method (600) of printing a compact disc in accordance with principles described herein is shown.
  • the method (600) includes many of the elements of the method (500) of Fig. 5.
  • the printing device includes override indicators in the form of digital override bits corresponding to individual parameters or errors that are detected from the optical disc carrier.
  • override indicators in the form of digital override bits corresponding to individual parameters or errors that are detected from the optical disc carrier.
  • all override bits are disabled (step 690) or set to "off.”
  • the printing device waits (step 695) for a new printing job.
  • the method (600) includes a series of steps beginning with the start of a compact disc print job (step 605).
  • a compact disc print job is begun by sending digital information from a computing device to a printing device through an interface.
  • the interface may be a direct link between the computing and printing devices or may include a data network.
  • the digital information is received at the printing device and converted into a format that the printing device may use to print an image onto the compact disc.
  • a printable compact disc is loaded (step 610) onto an optical disc carrier as has been discussed previously. When necessary, adjustments may be made to the optical disc carrier to accommodate optical discs of different sizes.
  • the optical disc carrier is then inserted (step 615) into a printable disc tray of the printing device.
  • an optical sensor is positioned (step 620) over the optical disc in the carrier.
  • the ability of the optical sensor to calibrate i.e., to detect a minimum quantity of reflected light, indicates the presence of a compact disc in the printing device.
  • a determination is made (step 625) whether the optical sensor can calibrate.
  • the optical sensor In the event that the optical sensor is able to calibrate, it is determined that a printable compact disc is indeed present in the optical disc carrier and the next parameter is detected. If it is determined that the sensor is unable to calibrate, it is then determined (step 665) whether the "not present" override bit is set. The "not present" override bit, when set, allows the printing device to continue the automated disc detection and printing process in spite of the optical sensor being unable to calibrate. If the "not present" override bit is not set, the optical disc carrier is ejected (step 680).
  • the user may view an error message on the user interface of the printing device relating to the inability to detect a compact disc in the optical disc carrier.
  • the user may then verify the presence or absence of a compact disc in the optical disc carrier.
  • the user is prompted (step 675) to continue or cancel the printing operation.
  • a faulty determination as to the absence of the disc may then be overridden as the user elects to continue, and the "not present" override bit is set (step 670).
  • the detection and printing process may then continue by loading the printable compact disc on the optical disc carrier again (step 610) and reinserting (step 615) the optical disc carrier into the printable disc tray of the printer.
  • the optical sensor After progressing past the optical disk presence detection, either by the optical sensor detecting the presence of the disk or the "not present" override bit being set, the optical sensor directs light toward the surface of the compact disc and measures (step 630) the reflected diffuse and specular light. By determining (step 635) if the ratio of diffuse to specular light is under a predetermined threshold, it may be determined if the compact disc is upside- down, as discussed previously.
  • the diffuse to specular ratio may be below or above a threshold to indicate the orientation of the compact disc. Additionally, it should be understood that a ratio of reflected specular light to diffuse light may be used in conjunction with a threshold to achieve substantially the same result.
  • step 660 Upon determination that the compact disk is upside-down, it is determined (step 660) whether an "upside-down" override bit is set. If the "upside-down" override bit is found to be set, the disc detection and printing process is allowed to continue. Otherwise, the steps of ejecting (step 680) the carrier, prompting (step 675) the user to continue or cancel, and setting the necessary override bit (step 670) or cancelling (step 697) the print job are performed, as previously explained.
  • the compact disc size is scanned (step 640) using the optical sensor. This scanning may be accomplished using the fact that the optical disc carrier will reflect little light back to the optical sensor while the compact disc will reflect a substantial amount of light detectable to a properly calibrated optical sensor. The center of the compact disc may also be located using these principles. [0060] Once the compact disc size is scanned (step 640), it is then determined (step 645) whether the size of the compact disc is correct for the printing job at hand.
  • the center of the compact disc is found (step 650) using the optical sensor and the image is printed (step 699) on the compact disc. If the size of the compact disc is determined to be incorrect for the printing job at hand, it is determined (step 665) whether a "bad size" override bit is set. Like other detected parameters, a set "bad size” override bit permits the printing process to continue as if the compact disc size were detected to be correct. Otherwise the steps of ejecting (step 680) the carrier, prompting (step 675) the user to continue or cancel, and setting the necessary override bit (step 670) or cancelling (step 697) the print job are performed, as previously explained.

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  • Record Information Processing For Printing (AREA)
  • Ink Jet (AREA)

Abstract

L'invention concerne un procédé d'impression sur un disque optique (110) utilisant un dispositif d'impression (300) comprenant la détection automatique du disque optique (110), le procédé comprend, avec un capteur (200) du dispositif d'impression (300), la détection optique du disque optique (110) pour déterminer si le disque optique (110) est installé correctement ou non pour impression dans un support (100) qui est inséré dans le dispositif d'impression (300). Un système pour imprimer sur un disque optique (110), le système comprend un dispositif d'impression (300) ; un support (100) configuré pour maintenir le disque optique (110) tandis que le dispositif d'impression (300) imprime sur le disque (110) ; et un capteur (200) du dispositif d'impression (300) configuré pour détecter optiquement si le disque optique (110) est installé correctement ou non dans le support (100) pour impression.
PCT/US2007/004165 2007-02-15 2007-02-15 Détection de disque optique automatique WO2008100260A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2007/004165 WO2008100260A1 (fr) 2007-02-15 2007-02-15 Détection de disque optique automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/004165 WO2008100260A1 (fr) 2007-02-15 2007-02-15 Détection de disque optique automatique

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WO2008100260A1 true WO2008100260A1 (fr) 2008-08-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592596A (en) * 1995-06-08 1997-01-07 Sony Corporation System and method for the automatic printing of storage media labels
US20050151825A1 (en) * 2003-11-21 2005-07-14 Motoyuki Sukigara Label printing apparatus
US20050179709A1 (en) * 2004-02-12 2005-08-18 Salisbury Phillip C. Apparatus and methods for sensing and clamping discs
US20050225594A1 (en) * 2003-10-02 2005-10-13 Seiko Epson Corporation Liquid ejection apparatus
EP1657058A1 (fr) * 2000-09-25 2006-05-17 Seiko Epson Corporation Plateau de transfert d'un support d'enregistrement et appareil d'enregistrement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592596A (en) * 1995-06-08 1997-01-07 Sony Corporation System and method for the automatic printing of storage media labels
EP1657058A1 (fr) * 2000-09-25 2006-05-17 Seiko Epson Corporation Plateau de transfert d'un support d'enregistrement et appareil d'enregistrement
US20050225594A1 (en) * 2003-10-02 2005-10-13 Seiko Epson Corporation Liquid ejection apparatus
US20050151825A1 (en) * 2003-11-21 2005-07-14 Motoyuki Sukigara Label printing apparatus
US20050179709A1 (en) * 2004-02-12 2005-08-18 Salisbury Phillip C. Apparatus and methods for sensing and clamping discs

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