摘要:
A ribbon guide includes a pair of upper and lower plates for limiting upper and lower ends of an ink ribbon. A ribbon guide plate is disposed between the pair of upper and lower plates so as to guide a non-transfer surface of the ink ribbon. Ribbon press bars are suspended between the pair of upper and lower plates so as to guide a transfer surface of the ink ribbon. Cutouts through which the ink ribbon is inserted are formed at the lower plate so as to surround lower end portions of the ribbon press bars.
摘要:
A ribbon guide includes a pair of upper and lower plates for limiting upper and lower ends of an ink ribbon. A ribbon guide plate is disposed between the pair of upper and lower plates so as to guide a non-transfer surface of the ink ribbon. Ribbon press bars are suspended between the pair of upper and lower plates so as to guide a transfer surface of the ink ribbon. Cutouts through which the ink ribbon is inserted are formed at the lower plate so as to surround lower end portions of the ribbon press bars.
摘要:
A recording device and a recording medium supply mechanism for a recording device enable using both fanfold paper and roll paper as recording media. A printer assembly 4 has a print head 43. A fanfold paper supply unit 6 has a upper paper guide 45 and lower paper guide 47 that form at least part of the transportation path that guides the recording medium to the print head 43 side, and a tractor units 60 that supplies fanfold paper 120 with marginal punch holes to the transportation path. A roll paper holder 2 supports a paper roll 110, which is recording paper 112 that is conveyed through the transportation path and is stored wound in a roll. The roll paper holder 2 is disposed above the fanfold paper supply unit 6, which is located behind the printer assembly 4.
摘要:
A method of printing on a printing medium is provided, including providing a printing head for printing on a recording medium and conveying the recording medium in a first direction with a conveyer. A detector is positioned on the upstream side of the print head, the detector then detecting a trailing edge of the recording medium. The amount of recording medium conveyance by the conveyer upon the detection of said trailing edge is computed and it is determined whether the recording medium is of a standard size. Thereafter, a printing region on the recording medium is defined in accordance with the size of the recording medium if the recording medium is a standard size. A printer for printing on a printing medium which employs the above method is also provided wherein a detector is positioned upstream of the print head for detecting a trailing edge of the recording medium which is being conveyed. A computer computes the amount of the recording medium conveyance by the conveyer upon the detection of the trailing edge by the detector, and a size determiner determines whether the recording medium is of a standard size and defines a printing region on the recording medium in accordance with the size of the recording medium if the recording medium is of a standard size.
摘要:
A method of discharging paper by forcibly urging the paper in a concave shape in which a printed surface is rendered concave as viewed in a discharging direction and an ink jet printer including a pair of supporting portions for supporting both side portions of the paper which has been discharged after being printed on an upper surface thereof, and a pushing-down portion for pushing down a central portion of the paper.
摘要:
The sheet end detector unit (10) is provided with a supporting plate (13), a depressed bearing part (14) for bearing against a sheet discharge roller shaft (5) and a pair of leg pieces (15) which engage with the sides of a unit attachment hole (3) provided in a sheet guide plate (1). The supporting plate (13) supports the sheet end detector unit (10) which is readily positioned on the sheet discharge roller shaft (5) by simply inserting the supporting plate (13) through the attachment hole (3) so that the legs (15) are securely engaged at one side of the supporting plate (13) and the other side of the supporting plate (13) abuts against the rear side of the sheet guide plate (1).
摘要:
A paper detection device for a printer, includes: a support member; a main lever pivotably mounted on the support member, wherein the main lever has a self-resetability to an upright position and is pivotable only in a sheet-feed-direction; an auxiliary lever pivotably mounted on the main lever, including a free end protruding into a sheet passage, wherein the auxiliary lever has a self-resetability and moves the main lever in the sheet-feed direction when the free end thereof is urged in the sheet-feed direction, but does not move the main lever in a reverse-sheet-feed direction when the free end of the auxiliary lever is urged in a reverse-sheet-feed direction.
摘要:
A sheet end detector comprising a light-emitting element and a light-receiving element for detecting changes in the amount of light associated with movement of a piece of a recording medium is provided. A standard value calculator detects the difference between the sheet end detector platen voltage Vp corresponding to light reflected only from said platen and said sheet end detector paper saturation voltage Vm corresponding to light reflected only from the recording medium. The amount necessary to feed the paper for platen voltage Vp to reach paper saturation voltage Vm is a constant value, irrespective of recording medium characteristics, which is when all of the light is reflected by the recording medium and the entire end portion of a piece of a recording medium has reached a predetermined position relative to the position of the sheet end detector. A standard value is calculated by multiplying this difference by a constant coefficient C and then adding back the lesser of Vp or Vm, C being a numerical value greater than 0 and less than 1 and being an indication of the desired position of the leading edge of the recording medium. A comparator compares the standard value and a signal from the sheet end detector and determines when the signal corresponds to the standard value, which is indicative that the presence of a leading edge or trailing edge of the recording medium has reached a predetermined position.
摘要:
In a printer, a bottom of an automatic paper feeder is formed by a bottom itself of a printer case; an operation lever is provided for operating a hopper and separation pawls arranged in a stacker section; a spring member is used as a changeover mechanism for a paper feed-in roller; an ink shielding portion is provided over an entire print area; the paper is discharged while forcibly urging the paper in a concave shape in which its printed surface is concaved; and a changeover is effected between a paper feeding operation and a pumping operation by a carriage at both ends of a carriage-moving area.