Abstract: A cartridge includes: a toner chamber, provided with an opening, for accommodating a toner; and a seal member including a sealing portion, elongated in a longitudinal direction of the cartridge, for unsealably sealing the opening and a mounting portion for being mounted on an unsealing member to unseal the opening. The sealing portion includes a first sealing portion located at a longitudinal end portion and a second sealing portion located at a longitudinal central portion. With respect to a direction crossing the longitudinal direction, a length between the first sealing portion and the mounting portion of the seal member is shorter than a length between the second sealing portion and the mounting portion.

Abstract: A developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member including end portion sealing portions each for sealing an end portion of the opening and a central portion sealing portion for sealing a central portion of the opening; and a rotatable member, connected with the sealing member, for peeling off the sealing member from the opening by rotation thereof to expose the opening. With respect to a rotational axis direction of the rotatable member, an outer configuration of the rotatable member is different between a sealing-member-connected end thereof and a sealing-member-connected center thereof so that one of the end portion sealing portions is peeled earlier than the central portion sealing portion and so that the central portion is peeled earlier than the other one of the end portion sealing portions.

Abstract: A developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member including end portion sealing portions each for sealing an end portion of the opening and a central portion sealing portion for sealing a central portion of the opening; and a rotatable member, connected with the sealing member, for peeling off the sealing member from the opening by rotation thereof to expose the opening. With respect to a rotational axis direction of the rotatable member, an outer configuration of the rotatable member is different between a sealing-member-connected end thereof and a sealing-member-connected center thereof so that one of the end portion sealing portions is peeled earlier than the central portion sealing portion and so that the central portion is peeled earlier than the other one of the end portion sealing portions.

Abstract: A cartridge detachably mountable to a main assembly of the image forming apparatus includes an image bearing member; a frame having an opening for exposing the image bearing member; a movable shutter member movable between a closing position for closing the opening and an open position for opening the opening; and a holding portion for abutting to the shutter member to hold the shutter member at the closing position, wherein the shutter member is elastically deformable to ride over the holding portion to permit the shutter member to move from the closing position to the open position.

Abstract: A developer accommodating unit for accommodating a developer for image formation includes a developer accommodating container including a flexible container provided with openings for permitting discharge of the accommodated developer and sealing member for sealing the openings by a bonding portion and for exposing the openings by being moved, an unsealing member, mounted on the sealing member, for moving the sealing member, and a frame which accommodates the developer accommodating container and the unsealing member and which includes a fixing portion for fixing the flexible container. In addition, connecting potion is disposed between the openings in the flexible container. With respect to an unsealing direction of the sealing member, the fixing portion and the connecting portion are provided so as to overlap with each other.

Abstract: A cartridge includes: a toner chamber, provided with an opening, for accommodating a toner; and a seal member including a sealing portion, elongated in a longitudinal direction of the cartridge, for unsealably sealing the opening and a mounting portion for being mounted on an unsealing member to unseal the opening. The sealing portion includes a first sealing portion located at a longitudinal end portion and a second sealing portion located at a longitudinal central portion. With respect to a direction crossing the longitudinal direction, a length between the first sealing portion and the mounting portion of the seal member is shorter than a length between the second sealing portion and the mounting portion.

Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.

Abstract: A developer accommodating unit for accommodating a developer for image formation. A flexible container includes a developer accommodating portion for accommodating the developer and an opening for permitting discharge of the developer. The flexible container also includes a superposed multi layer sheet structure portion for forming the developer accommodating portion. A sealing member seals the opening and an unsealing member moves the sealing member to unseal the opening. A frame that accommodates the flexible container, the sealing member, and the unsealing member includes a fixing portion for fixing the flexible container. A fixed portion fixed to the fixing portion is provided at the superposed multi layer sheet structure portion of the flexible container, and an interlayer bonding portion between the superposed layers is provided between the fixed portion of the multi layer sheet structure portion and the developer accommodating portion.

Abstract: With respect to an unsealing direction in which exposure of a discharging portion 35 advances, a fixing portion 34g of a developer accommodating member 34 is provided in a range of a region of a connecting portion 35b of the discharging portion 35.

Abstract: In a recording and reproducing apparatus, an optical disc is rotated in a rotating direction and an optical system focuses a laser beam on the optical disc to form a beam spot on the optical disc. The optical system is provided with a scanner which deflects the laser beam along a radial direction of the optical disc in such a manner that the beam spot follows a first scan trajectory along a first direction crossing the rotating direction and a second scan trajectory along a second direction different from the first direction. A first data track with a sequence of recording pits along the first scan trajectory is formed and arranged on the optical disc.

Abstract: A hologram-recording medium containing: a recording layer containing a polymerizable monomer containing a structural framework represented by the following general formula (1). In general formula (1), X and Y are not the same, and X and Y are selected from hydrogen, iodine, bromine, and chlorine atoms and from methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, hydroxyl, methoxy, ethoxy, isopropoxy, tert-butoxy, phenoxy, naphthoxy, acetyl, carboxyl, acetoxy, thiophenyl, thionaphthyl, thiomethyl, thioethyl, thioisopropyl, thio-tert-butyl, and thiol groups; and W is selected from the group consisting of benzylvinyl, styryl, acryloyl, and methacryloyl groups.

Abstract: A holographic recording method includes the following steps: irradiating an optical recording medium with a coherent reference beam and a coherent information beam to produce a hologram in the optical recording medium while irradiating the optical recording medium with an incoherent pretreatment beam to consume a polymerization inhibitor; irradiating the hologram with the reference beam to extract a reproduction beam while stopping irradiating the optical recording medium with the reference beam; sensing the signal beam with an image pick-up unit to detect an intensity of the signal beam; and calculating a bit error rate with a control unit to irradiate the hologram with the information beam if the bit error rate is larger than a prescribed value, or to stop irradiating the optical recording medium with the reference beam, the information beam and the pretreatment beam if the bit error rate is smaller than the prescribed value.

Abstract: Data recorded in a recording medium is encrypted with an encryption/decryption key, and the encryption/decryption key is encrypted with an encryption-only key. The encrypted encryption/decryption key is embedded in encrypted data. A decryption-only key the encryption/decryption key is embedded in a program for reading. The data and the program for reading are recorded in the recording medium. The data cannot be read without the program for reading. The program for reading cannot be used for recording other data even if it is copied.

Abstract: A cartridge detachably mountable to a main assembly of the image forming apparatus includes an image bearing member; a frame having an opening for exposing the image bearing member; a movable shutter member movable between a closing position for closing the opening and an open position for opening the opening; and a holding portion for abutting to the shutter member to hold the shutter member at the closing position, wherein the shutter member is elastically deformable to ride over the holding portion to permit the shutter member to move from the closing position to the open position.

Abstract: A two-dimensional digital data acquisition element includes: a pixel area having a plurality of pixels arranged in a matrix form, each of the pixels having a photoelectric conversion element to convert the reproduced light from the optical information recording medium to an electric signal; selection circuits which select the pixel; a readout circuit which reads out an electric signal of a pixel selected by the selection circuits; and a 1-bit AD converter which converts an output of the readout circuit to 1-bit digital data. A pitch ratio N between a pitch P1 of the unit data areas in the two-dimensional digital image information and a pitch P2 of the pixels in the pixel area defined as N=P1/P2 satisfies a relation A·n2/(An+1)<N<A·n2/(An?1) where A is the number of digital data in one-dimensional direction of one byte of the two-dimensional digital data and n is a natural number of at least 2.

Abstract: An optical recording medium includes a first substrate having a groove on the side of an outer peripheral portion thereof; a second substrate in contact with the first substrate in the outer peripheral portion; and a recording layer being disposed in a gap between the first substrate and the second substrate and forming a void in cooperation with the first substrate at the portion of the groove.

Abstract: An optical information recording medium in which a inner layer is sandwiched between supporting plates and a number of recording portions formed of a recording material capable of recording information in the form of a hologram are rotatably arranged in the inner layer. The recording portion is rotated by electrifying its surface and an information beam and a reference beam are directed onto it from different angles to carry out angle multiplex recording. The surface of the recording portion is color coded with at least two colors. The color coding and rotation of the recording portions allow characters or images to be displayed. Electronic equipment using such an optical information recording medium is provided.

Abstract: According to a first aspect of the invention, an optical information recording apparatus includes a spatial beam modulator, an optical component, a drive unit, and a control unit. The apparatus performs angle-multiplex recording of the information so that an absolute value of a bisector angle ?x for n-th recording (1?n?rN) is smaller than an absolute value of a bisector angle ?x for m-th recording (m>n and rN<m?N). Here, N is the number of pages to be defined as the total number of recording times performed on a recording spot of an optical information recording medium. The n-th recording is performed on the recording spot with the reference beam and the information beam. r is a rate to be determined by a volumetric shrinkage of the optical information recording medium. The volumetric shrinkage increases with irradiating the optical information recording medium with the reference beam and the information beam.

Abstract: A holographic recording medium includes a recording layer. The recording layer includes a framework being expressed with the following general formula (1), In the above formula (1), Ar represents a substituted or unsubstituted group selected from benzothiophene group, naphthothiophene group, dibenzothiophene group, thienothiophene group, dithienobenzene group, benzothiazole group, naphthothiazole group, benzoisothiazole group, naphthoisothiazole group, phenothiazine group, phenoxathiin group, dithianaphthalene group, thianthrene group, thioxanthene group, and bithiophene group. In addition, n is an integer from 1 to 4.

Abstract: An optical-information recording medium includes a substrate that includes a servo surface having a servo pattern thereon; an information recording layer laminated on the servo surface of the substrate capable of recording information as a hologram produced by interference between an information beam containing the information and a reference beam; an address servo area that is formed as a part of the servo pattern, and that records therein address information and clock information for aligning a beam, emitted from an optical-information recording apparatus for recording information in the information recording layer, to a target position in the information recording layer; and a following up servo area that is formed as a part of the servo pattern, and that is to be irradiated by the beam to make the beam follow a rotation of the optical-information recording medium.