Abstract: An adjusting device provided on a transmission belt to adjust the tension of the transmission belt. The adjusting device includes a housing and a fastener fixed on the housing, the fastener engaging the transmission belt so that there is no relative displacement between the fastener and the transmission belt. A sliding mechanism is disposed on the housing and is capable of sliding in a linear direction on the housing, the sliding mechanism engaging the transmission belt so that there is no relative displacement between the sliding mechanism and the transmission belt. An elastic device is fixed to the housing at a first end and fixed to the sliding mechanism at a second end for maintaining proper tension in the transmission belt.

Abstract: A scanner for scanning an object is provided. The scanner includes a platen, a scanning device, a track and a first elastic member. The object is placed on the platen. The scanning device is movably disposed under the platen, having a lateral side. The track supports the scanning device at the lateral side, guiding motion in axial direction of the track. The first elastic member is disposed on the lateral side, supporting the scanning device based on the track, providing a predetermined distance between the platen and the scanning device.

Abstract: A scanner for scanning an object. The scanner comprises a platen, a scanning device, a resilient member and a sliding member. The object is placed on the platen. The scanning device scans the object. The sliding member is pivoted on the scanning device and slidably connects the resilient member pushing the scanning device toward the platen.

Abstract: A scanner for scanning an object. The scanner comprises a platen, a scanning device, a contact element, a frame and a base. The object is placed on the platen. The scanning device scans the object by a belt driven device. The contact element is disposed between the platen and the scanning device. The base flexibly supports the scanning device toward the platen, providing thorough and regulated distance therebetween.

Abstract: A scanner, including a contact image sensor module and an elasticity-providing element, is provided. When scanning, the elasticity-providing element is capable of avoiding vertical shift of contact image sensor module resulting from mechanical friction or other unexpected. Therefore, the contact image sensor module can retrieve clear images all the time.

Abstract: An ink-jet printing module, positioned in an ink-jet printing mechanism, includes a first side, a second side opposite to the first side, and a guiding bar between the first side and the second side, a print head movable along the guiding bar, a cleaning device, a covering device, and a printing platform. The cleaning device for cleaning the print head is adjacent to an interior of the first side. The covering device for covering the print head is adjacent to an interior of the second side. The printing platform is located at the bottom of the ink-jet printing module and between the cleaning device and the covering device.

Abstract: An ink-jet printing module, positioned in an ink-jet printing mechanism, includes a first side, a second side opposite to the first side, a guiding bar between the first side and the second side, a print-head movable along the guiding bar, a cleaning device, a covering device, and a printing platform. The cleaning device for cleaning the print-head is adjacent to an interior of the first side. The covering device for covering the print-head is adjacent to an interior of the second side. The printing platform is located at the bottom of the ink-jet printing module and between the cleaning device and the covering device.

Abstract: A wiper for avoiding ink residues adhering on side surfaces of a print head comprises a main body. The main body comprises a supporting portion, flexible portion, and wiping portion, which are sequentially connected with each other from bottom to top. The wiping portion has a wiping end and a contacting end. The wiping end extends from one side of the wiping portion while the contacting end is positioned on the top of the wiping portion. Before the print head contacts the contacting end, the contacting end is higher than the nozzle surface and the wiping end is lower than the nozzle surface. After the print head contacts the contacting end, the flexible portion bends down so that the contacting end is lower than the nozzle surface and the wiping end contacts the nozzle surface for wiping the ink residue on the nozzle surface.

Abstract: A media feeding mechanism mainly comprises a base provided with a first surface and a second surface, a first roller, a second roller, a first one-way bearing used to support the first roller, a second one-way bearing used to support the second roller, a cam gear and a stopper. To prevent media from wrinkling or skewing, the media transmitted by the first roller is deskewed by contacting with the idled second roller for a predetermined period of time. The first roller 11 is idled when the deskewing process concludes. Rotation of the second roller clockwise scrubs the media toward the exit point.

Abstract: A print head maintenance device is used in a printing device. The print head maintenance device cleans a print head of the printing device. The print head is movable on a horizontal track of the printing device. The print head has at least one linearly arranged nozzle array. When the print head moves across the maintenance device, the print head will connect with the maintenance device through the connecting device, making the connecting device capable of moving along the first track to slide the ink brush along the second track so as to clean remaining ink from the nozzle array of the print head.

Abstract: A recording medium conveying device for an ink jet printing device comprises an active roller, a starwheel and an elastic cantilever beam, so that when the starwheel presses against the active roller, the recording medium is conveyed due to the rolling of the active roller, and is not substantially damaged.

Abstract: A paper feeding system has a housing, a paper tray, a paper path positioned before a front end of the paper tray, a paper engaging mechanism installed above the paper tray, a paper separating mechanism, and a driving device. The paper engaging mechanism comprises an engaging arm and an engaging roller. The engaging arm comprises a first fixing shaft rotatably installed on the housing, and a second end installed with the engaging roller. When the engaging arm swings down to the paper tray, the engaging roller pushes at least a sheet of paper from the paper tray to the paper path. The paper separating mechanism comprises a separating roller and a friction pad installed respectively above and below the paper path. When two sheets of paper pass between a gap between the friction pad and the separating roller, the separating roller will move only the top sheet forward. The driving device is used to drive the engaging arm, the engaging roller, and the separating roller.

Abstract: An ink-jet printing module, positioned in an ink-jet printing mechanism, is disclosed. The ink-jet printing module has a first side, a second side opposite to the first side, and a guiding bar between the first side and the second side. The guiding bar has a first end coupled to the first side and a second end coupled to the second side. A print head is removably located at the guiding bar. The ink-jet printing module comprises: a cleaning device such as a wiper, a covering device such as a cap and a printing platform. The cleaning device for cleaning the print head is located at a bottom of the ink-jet printing module and adjacent to an interior of the first side. The covering device for covering the print head is located at the bottom of the ink-jet printing module and adjacent to an interior of the second side. The printing platform is located at the bottom of the ink-jet printing module and between the cleaning device and the covering device.

Abstract: A wiper for avoiding ink residues adhering on side surfaces of a print head comprises a main body. The main body comprises a supporting portion, flexible portion, and wiping portion, which are sequentially connected with each other from bottom to top. The wiping portion has a wiping end and a contacting end. The wiping end extends from one side of the wiping portion while the contacting end is positioned on the top of the wiping portion. Before the print head contacts the contacting end, the contacting end is higher than the nozzle surface and the wiping end is lower than the nozzle surface. After the print head contacts the contacting end, the flexible portion bends down so that the contacting end is lower than the nozzle surface and the wiping end contacts the nozzle surface for wiping the ink residue on the nozzle surface.

Abstract: A recording medium conveying device for an ink jet printing device comprises an active roller, a starwheel and an elastic cantilever beam, so that when the starwheel presses against the active roller, the recording medium is conveyed due to the rolling of the active roller, and is not substantially damaged.

Abstract: A sheet feeding device includes a feed roller consisting of a rigid roller and an elastic coating covering at least part of the feed roller. A sheet is placed between the pressing member and the feed roller and is pressed tightly by the pressing member. While the feed roller rotates, the sheet is fed by means of the friction between the sheet and the pressing member and between the sheet and the feed roller. The thickness of the elastic coating is preferably much less than the radius of the rigid roller, and is also preferably less than 0.5 millimeter.

Abstract: The feeding mechanism for feeding media from an initial site to a predetermined site comprises a base, a scrubber, a deskewer, two feeders, a lifting device having two cam portions, a driving element and a releasing device. The deskewer is moved between a first position and a second position and sets the media located at the initial site. The two feeders are used for transmitting the media located at the initial site toward the predetermined site. The cam portions are used as a lifter to move the deskewer from the first position to the second position. The driving element disposed between the lifting device and the releasing device generates forces to actuate the cam portions to move the deskewer. The releasing device is used as an overload protection clutch connected between the lifting device and the driving element, having a first plate separately contacting the driving element.

Abstract: An ink jet service station has a housing with a right wall and a left wall, and a carriage for holding a wiper. The carriage is moveably installed in the housing, and a scraper is rotatably mounted on the carriage. When the carriage moves to the left wall, the scraper contacts the left wall. A first torque is thus placed upon the scraper that causes the scraper to rotate to the right and scrape the wiper. When the carriage moves to the right wall, the scraper contacts the right wall and a second torque is placed upon the scraper that causes the scraper to rotate to the left and scrape the wiper.

Abstract: A capping system has a cap for capping an ink jet print head, and a supporting structure for mechanically engaging and disengaging the cap with the ink jet print head. The cap has a vent. When the supporting structure engages the cap with the ink jet print head, the cap covers the ink jet print head to cap the ink jet print head. The vent in the cap ensures that the pressure inside the volume of the cap equalizes with the pressure outside the volume of the cap. This prevents overpressure within the cap.

Abstract: A capping system has a cap for capping an ink jet print head, and a supporting structure for mechanically engaging and disengaging the cap with the ink jet print head. The cap has a vent. When the supporting structure engages the cap with the ink jet print head, the cap covers the ink jet print head to cap the ink jet print head. The vent in the cap ensures that the pressure inside the volume of the cap equalizes with the pressure outside the volume of the cap. This prevents overpressure within the cap.