摘要:
An image recording apparatus includes a conveyance roller which conveys the recording medium, a drive source for rotating the conveyance roller, a print head and a carriage mounted with the print head. The carriage includes an abutment portion. The image recording apparatus further includes a carriage position detector which detects a position of the carriage in a movement direction of the carriage and still further includes a rotating body which rotates in synchronization with the conveyance roller. The rotating body includes a reference portion which protrudes or depresses in the movement direction at a predetermined rotation phase of the rotating body and abut with the reference portion. Moreover, the image recording apparatus includes an origin determination section which, based on a result of the detection by the carriage position detector, determines an origin position of a rotation phase of the conveyance roller.
摘要:
A droplet ejection apparatus which includes: a platen on which an ejection target medium is conveyed; a head that ejects droplets toward the platen, the head being provided in a reciprocable manner along the platen; a light emitting device that emits a light in an oblique direction toward the platen within a plane including a straight line along a moving direction of the head and a normal line with respect to the platen; a light receiving device that receives the light emitted from the light emitting device and regularly reflected by one of the platen and the ejection target medium; and a calculation device that calculates a distance between the one of the platen and the ejection target medium, and the head, based on a position at which the light receiving device receives the light during a movement of the head. One of the light emitting device and the light receiving device reciprocably moves integrally with the head, and the other is provided separately from the head.
摘要:
A droplet ejection apparatus which includes: a platen on which an ejection target medium is conveyed; a head that ejects droplets toward the platen, the head being provided in a reciprocable manner along the platen; a light emitting device that emits a light in an oblique direction toward the platen within a plane including a straight line along a moving direction of the head and a normal line with respect to the platen; a light receiving device that receives the light emitted from the light emitting device and regularly reflected by one of the platen and the ejection target medium; and a calculation device that calculates a distance between the one of the platen and the ejection target medium, and the head, based on a position at which the light receiving device receives the light during a movement of the head. One of the light emitting device and the light receiving device reciprocably moves integrally with the head, and the other is provided separately from the head.
摘要:
An ink cartridge includes a bag filled with ink and sealed. The bag is housed in a cartridge case. The bag is formed out of a laminate including a ductile film and a rigid film which are laminated together. The case has a hole, through which a hollow needle can protrude from the outside into the case and pierce the bag to take out ink from the bag. The laminate has such a sealing effect that, when it is pierced by the needle, the pierced hole is blocked. The cartridge is suitable for an ink jet printer.
摘要:
An ink package has a shape restoring ability and is made of a laminated structure film material in which multiple film sheets of polyethylene or similar material are laminated. Therefore, the ink supplying pressure for ink supplied to the print head is kept at a negative pressure. Since the ink extracting member is formed into a needle-like hollow body, the member can be easily stuck into a recess formed at the ink package.
摘要:
A printing device includes a casing housing a sheet-feed mechanism for transporting a print medium and a carriage transporting mechanism for reciprocally moving a carriage in a main scanning direction. A print unit having a print head is detachably attached to the carriage. The print unit is capable of printing whether attached or detached from the carriage. A detection unit is provided for determining whether the print unit is attached to the carriage. The casing can be formed with a hollow space in which the print unit can be stored when the print device is not being used.
摘要:
An image-fixing apparatus including a presser roller; a heater roller held in contact with the presser roller to provide a nipper for nipping a recording sheet bearing an unfixed image thereon, an electric resistance of the heater roller decreasing as respective contact areas of the heater and presser rollers which areas define the nipper increase; a supplying device which supplies an electricity to the heater roller so that the nipper generates a thermal energy to thermally fix the unfixed image on the recording sheet; a measuring device which measures the electricity supplied from the supplying device to the heater roller; and a sheet-jamming detecting device which detects a jamming of the recording sheet at the nipper, based on the electricity measured by the measuring device.
摘要:
A paper cassette adapted to be removably mounted in a paper feed section of an image forming device. The paper cassette is generally constructed of a main frame and an auxiliary frame slidably engaged with the main frame. The auxiliary frame is moved forwardly or rearwardly relative to the main frame in accordance with a longitudinal size of the desired sheets of paper to be stored in the paper cassette. Thereafter, the auxiliary frame is fixedly positioned by a position adjusting member provided on the main frame. Thus, a longitudinal size or length of the paper cassette to be mounted into the paper feed section of the image forming device can be varied in accordance with a longitudinal size of the desired sheets of paper to be used, thereby reducing the types of paper cassettes required.
摘要:
A photoconductive cartridge removably mounted on a photographic recording apparatus and including a photoconductive body, a casing having an opening for exposure of the photoconductive body to an outside of the casing, and a shutter having a closed position in which the opening is closed by the shutter and an open position in which the opening is open. The photoconductive cartridge further includes a locking device having a first engaging member movable with the shutter, a second engaging member having a first position in which the second engaging member engages the first engaging member to thereby prevent a movement of the first engaging member and a movement of the shutter from the closed position to the open position, and a second position in which the second engaging member is released from the first engaging member, and a biasing device for biasing the second engaging member toward the first position.
摘要:
A portable dot printing device including an encoder for detecting movement amount of the portable dot printing device across the recording medium and for producing a pulse signal based on a minimum movement amount detectable by the encoder; and a print head formed with at least a first element row and a second element row each having elements for printing dots on the recording medium, the first element row and the second element row being separated by a predetermined pitch equal to a multiple of the minimum movement amount, the print head being controlled to print images using the elements based on the pulse signal from the encoder.