Abstract: An ink level detecting device rotationally coupled to an ink reservoir of an ink supply system is configured to detect an ink level of the ink reservoir. When an ink level of the ink reservoir is greater than a predetermined level, a weight distribution of the ink reservoir and the ink is toward a first side of the rotating portion. When the ink level of the ink reservoir is less than the predetermined level, the weight distribution of the ink reservoir and the ink is toward a second side of the rotating portion opposite to the first side.

Abstract: An ink level detecting device rotationally coupled to an ink reservoir of an ink supply system is configured to detect an ink level of the ink reservoir. When an ink level of the ink reservoir is greater than a predetermined level, a weight distribution of the ink reservoir and the ink is toward a first side of the rotating portion. When the ink level of the ink reservoir is less than the predetermined level, the weight distribution of the ink reservoir and the ink is toward a second side of the rotating portion opposite to the first side.

Abstract: A paper output structure includes a printer enclosure and a paper output extending device. The paper output extending device includes a pivot shaft, a drive gear, and a toothed bar which is capable of internal telescopic extension by means of a drive gear which includes a great gear portion and a first small gear portion. A printed sheet of paper is slightly stretched so as to be dropped uncrinkled and perfectly flat into the output tray.

Abstract: A paper outputting mechanism includes a paper tray for receiving a paper, a paper drive device located above the paper tray, and a paper outputting device engaged with the paper drive device. The paper outputting device includes a drive wheel and a belt surrounding the drive wheel. The belt includes a touching portion. The paper outputting device is moveable by the paper pickup arm, so that the touching portion completely abuts the paper.

Abstract: A paper tray for a printer includes a bottom plate and a rear plate. A plurality of papers is placed on the bottom plate. The plurality of papers includes a first paper and a second paper. The first paper is located on a topmost portion of the plurality of papers, and the second paper is located adjacent to the first paper and below the first paper. A plurality of bent pieces is secured on the rear plate. Each bent piece includes a first piece and a second piece. The first piece is placed on the rear plate. An obtuse angle is defined between the first piece and the second piece. The second pieces of the plurality of bents pieces are configured to allow the first paper sliding there over, and block the second paper sliding there over.

Abstract: A paper outputting mechanism includes a paper tray for receiving a paper, a paper drive device located above the paper tray, and a paper outputting device engaged with the paper drive device. The paper outputting device includes a drive wheel and a belt surrounding the drive wheel. The belt includes a touching portion. The paper outputting device is moveable by the paper pickup arm, so that the touching portion completely abuts the paper.

Abstract: A stray ink collection apparatus includes an air duct facing to a nozzle, a collection box, an absorber received in the collection box, and a pump mechanism. The air duct and the pump mechanism are secured to two opposite sides of the collection box. The pump mechanism is capable of generating a suction force to suck stray ink from the nozzle to the collection box via the air duct, and the absorber is capable of absorbing the stray ink.

Abstract: A paper output structure includes a printer enclosure and a paper output extending device. The paper output extending device includes a pivot shaft, a drive gear, and a toothed bar which is capable of internal telescopic extension by means of a drive gear which includes a great gear portion and a first small gear portion. A printed sheet of paper is slightly stretched so as to be dropped uncrinckled and perfectly flat into the output tray.

Abstract: A paper tray for a printer includes a bottom plate and a rear plate. A plurality of papers is placed on the bottom plate. The plurality of papers includes a first paper and a second paper. The first paper is located on a topmost portion of the plurality of papers, and the second paper is located adjacent to the first paper and below the first paper. A plurality of bent pieces is secured on the rear plate. Each bent piece includes a first piece and a second piece. The first piece is placed on the rear plate. An obtuse angle is defined between the first piece and the second piece. The second pieces of the plurality of bents pieces are configured to allow the first paper sliding there over, and block the second paper sliding there over.

Abstract: A paper feeding apparatus includes a bracket. A first feeding shaft is pivotably mounted on the bracket. A number of first feeding rollers is mounted on the first feeding shaft. The first feeding rollers rotate together with the first feeding shaft to contact a sheet of paper and move the paper forwards. A number of fans are mounted on the first feeding shaft. The fans rotate together with the first feeding shaft to drive air against the paper to prevent it becoming wrapped around one of the rollers.

Abstract: An output mechanism for transferring a print medium is disclosed. The output mechanism includes an output tray, a stand connected to the output tray, a roller assembly rotatably coupled to the stand, and a block member connected to the stand adjacent to the roller assembly. The roller assembly transfers the print medium onto the output tray. The block member contacts an end of the print medium and allows the print medium to be curl upward.

Abstract: A printing apparatus capable of detecting a number of different paper sizes includes a main body, an input device, a paper guide, a rack member, and a detector. The main body prints on paper; the input device contains the paper; the paper guide moves to fit two sides of the paper; the rack member moves simultaneously with the paper guide, and includes at least one identifier; each identifier corresponding to one of the different paper sizes. The detector detects the identifier to determine one of the different paper sizes and transmits the determined paper size to the main body, and the main body compares the determined paper size with a print setup. The main body reminds a user when the determined paper size does not conform to the print setup.

Abstract: A sheet ejection mechanism including a sheet ejection roller capable of rotating along a selective direction and having an arc portion and a plane portion, the arc portion and the plane portion forming a D-shape cross-section, and a pinch member configured at a position adjacent to the sheet ejection roller, wherein a recording medium is clamped and conveyed between the pinch member and the arc portion of the sheet ejection roller, and a gap is formed between the plane portion and the pinch member for allowing the recording medium to pass. Also, the present invention provides a duplex sheet feeding system having the sheet ejection mechanism.

Abstract: A sheet feeding mechanism having a pickup roller, a switch device, and a gear set is disclosed. The pickup roller drives a recording material to a first path, and the recording material proceeds from the first path to a second path or from a third path to a fourth path when the switch device is switched to a first position, and proceeds from the first path to the third path when the switch device is switched to a second position. The gear set drives the recording material from the first path to the third path when the switch device is switched to the second position and drives the recording material from the first path to the second path, from the third path to the fourth path, and from the fourth path to the first path when the switch device is switched to the first position.

Abstract: A sheet ejection mechanism including a sheet ejection roller capable of rotating along a selective direction and having an arc portion and a plane portion, the arc portion and the plane portion forming a D-shape cross-section, and a pinch member configured at a position adjacent to the sheet ejection roller, wherein a recording medium is clamped and conveyed between the pinch member and the arc portion of the sheet ejection roller, and a gap is formed between the plane portion and the pinch member for allowing the recording medium to pass. Also, the present invention provides a duplex sheet feeding system having the sheet ejection mechanism.

Abstract: A sheet feeding mechanism having a pickup roller, a switch device, and a gear set is disclosed. The pickup roller drives a recording material to a first path, and the recording material proceeds from the first path to a second path or from a third path to a fourth path when the switch device is switched to a first position, and proceeds from the first path to the third path when the switch device is switched to a second position. The gear set drives the recording material from the first path to the third path when the switch device is switched to the second position and drives the recording material from the first path to the second path, from the third path to the fourth path, and from the fourth path to the first path when the switch device is switched to the first position.