Abstract: A tape printer includes a holder support member at one side end in a roll sheet holder storage part in a direction substantially perpendicular to a feeding direction. In the holder support member, a mounting piece which is substantially rectangular in section and formed protruding outward on a positioning holding member of a roll sheet holder is fitted. The tape printer further includes a flat portion formed substantially horizontally between a rear edge of an insertion opening through which a roll sheet is inserted into the tape printer. On the flat portion, a front portion of a guide member is placed. At a rear edge of the flat portion in the feeding direction, at plural positions corresponding to various kinds of the roll sheets having different widths, there are formed four second positioning grooves in which part of the guide member is fitted.

Abstract: A tape printer includes a holder support member at one side end in a roll sheet holder storage part in a direction substantially perpendicular to a feeding direction. In the holder support member, a mounting piece which is substantially rectangular in section and formed protruding outward on a positioning holding member of a roll sheet holder is fitted. The tape printer further includes a flat portion formed substantially horizontally between a rear edge of an insertion opening through which a roll sheet is inserted into the tape printer. On the flat portion, a front portion of a guide member is placed. At a rear edge of the flat portion in the feeding direction, at plural positions corresponding to various kinds of the roll sheets having different widths, there are formed four second positioning grooves in which part of the guide member is fitted.

Abstract: A tape printer includes a roll sheet holder storage part of which a bottom is formed with a positioning recess which is rectangular in plan view and long sideways and has a predetermined depth. A discrimination recess rectangular in plan view is provided between the positioning recess and an inner base end of a holder support member). The discrimination recess fittingly receives a sheet discrimination part extending in a predetermined length from a lower end of the positioning holding member inward at substantially right angle thereto. The sheet discrimination part is formed with sensor holes arranged in an L-shaped pattern. In the discrimination recess, there are provided sheet discrimination sensors arranged in an L-shaped pattern.

Abstract: A tape printer includes a holder support member at one side end in a roll sheet holder storage part in a direction substantially perpendicular to a feeding direction. In the holder support member, a mounting piece which is substantially rectangular in section and formed protruding outward on a positioning holding member of a roll sheet holder is fitted. The tape printer further includes a flat portion formed substantially horizontally between a rear edge of an insertion opening through which a roll sheet is inserted into the tape printer. On the flat portion, a front portion of a guide member is placed. At a rear edge of the flat portion in the feeding direction, at plural positions corresponding to various kinds of the roll sheets having different widths, there are formed four second positioning grooves in which part of the guide member is fitted.

Abstract: A tape printer includes a roll sheet holder storage part of which a bottom is formed with a positioning recess which is rectangular in plan view and long sideways and has a predetermined depth. A discrimination recess rectangular in plan view is provided between the positioning recess and an inner base end of a holder support member). The discrimination recess fittingly receives a sheet discrimination part extending in a predetermined length from a lower end of the positioning holding member inward at substantially right angle thereto. The sheet discrimination part is formed with sensor holes arranged in an L-shaped pattern. In the discrimination recess, there are provided sheet discrimination sensors arranged in an L-shaped pattern.

Abstract: A top cover and a guide member form a discharge port. A plurality of guide ribs is provided on an edge portion of the top cover. A plurality of projecting pieces is provided on a guide member at positions not to face to the guide ribs. These guide ribs and projecting pieces are used for guiding a roll sheet to a discharge port. At least one of the guide ribs is provided with an extended portion extending upstream in a feeding direction to prevent the roll sheet 3A from curving in a direction vertical to the feeding direction. Thus, the inability to discharge the roll sheet can be avoided.

Abstract: A roll sheet is unwound and fed with its side edge being positioned in a reference point of the thermal head, and then subjected to printing by the thermal head. Coil springs are placed at positions respectively dividing substantially equally a length from a center to each end of the thermal head. A distribution of loads on the thermal head by each coil spring is determined so that a load exerted on the thermal head on the reference point side is larger than a load exerted on the thermal head on the opposite side. A position of a resultant force of the coil springs acts on the thermal head at a position displaced by a distance obtained by multiplying an entire length of the thermal head by a coefficient, from a center of the thermal head in the longitudinal direction toward the reference point.

Abstract: A cutting edge of a movable blade mounted to a cutter holder is inclined at an oblique cross angle. The cutting edge of the movable blade obliquely intersects a roll sheet placed on a cutter plate in its cutting direction. This ensures that the cutting edge cuts the roll sheet sharply. On this regard, this oblique cross angle has an influence on the number of times that the cutting edge is capable of cutting. An appropriate range of the oblique cross angle is 24° and 34°. The oblique cross angle is an angle formed between an upper surface of the cutter plate and the cutting edge in the cutting direction of the movable blade.

Abstract: A tape printer includes a roll sheet holder storage part of which a bottom is formed with a positioning recess which is rectangular in plan view and long sideways and has a predetermined depth. A discrimination recess rectangular in plan view is provided between the positioning recess and an inner base end of a holder support member). The discrimination recess fittingly receives a sheet discrimination part extending in a predetermined length from a lower end of the positioning holding member inward at substantially right angle thereto. The sheet discrimination part is formed with sensor holes arranged in an L-shaped pattern. In the discrimination recess, there are provided sheet discrimination sensors arranged in an L-shaped pattern.

Abstract: In a label printer, a top cover made of transparent resin is attached to a housing at a rear upper edge to cover a roll sheet holder storage part and to be freely opened and closed. A roll sheet of a roll sheet holder removably mounted in the roll sheet holder storage part is visible through the transparent resinous top cover. The roll sheet is provided with a plurality of medium information marks by printing. The medium information marks are visible through the top cover.

Abstract: A tape printer includes a holder support member at one side end in a roll sheet holder storage part in a direction substantially perpendicular to a feeding direction. In the holder support member, a mounting piece which is substantially rectangular in section and formed protruding outward on a positioning holding member of a roll sheet holder is fitted. The tape printer further includes a flat portion formed substantially horizontally between a rear edge of an insertion opening through which a roll sheet is inserted into the tape printer. On the flat portion, a front portion of a guide member is placed. At a rear edge of the flat portion in the feeding direction, at plural positions corresponding to various kinds of the roll sheets having different widths, there are formed four second positioning grooves in which part of the guide member is fitted.

Abstract: An image recording apparatus allows a single drive device to drive an ink cartridge conveying unit and ink hammers, thereby reducing the production cost. A drive motor supplies a drive force to rollers that convey ink cartridges and link mechanisms that push solid ink pieces out of ink cartridges. A planetary gear is provided to make it possible to select whether to transmit a drive force from the drive motor to the conveying rollers. Therefore, the apparatus is able to transmit a drive force to the conveying rollers only during conveyance of an ink cartridge, and to prevent transmission of drive force to the conveying rollers when the drive motor drives the link mechanisms, while employing the single drive motor to drive the conveying rollers and the link mechanisms.

Abstract: An image forming device provided with a main cover 6 that is capable of freely opening and closing and that covers an internally provided recording medium feed mechanism and the area scanned by the recording head during recording operations; and a maintenance cover 7 that is provided separately from the main cover in order to cover the maintenance mechanism and that is capable of freely opening and closing. Being provided separately from the main cover, the maintenance cover can be constructed relatively small and is, therefore, easy to open and close when replacing the maintenance paper. In addition, by only opening the maintenance cover while the recording head is positioned in the scanning area, the temperature of the recording head is not lowered.

Abstract: A printer is provided with: a heating device for heating a solid ink to dissolve the solid ink into a liquefied ink while an alternative current is supplied thereto; a recording device, on which the heating device is provided, for recording record information onto a record sheet by use of the liquefied ink; and a moving device for moving the recording device.

Abstract: In the position detection device, a timing fence is formed with a plurality of slits which are arranged in its elongated direction. An elongated metal member is provided for supporting the timing fence so that the timing fences will extend in the scanning direction of the image recording head. An encoder is provided for counting the slits on the timing fence while the carriage moves. A gap between the encoder and the elongated metal member can be adjusted properly and uniformly through rotating eccentric collars of the adjustment members inserted into the elongated through-holes in the elongated metal member.

Abstract: An ink cartridge retains a plurality of solid inks, each of which is to be heated and dissolved so that the dissolved ink is used for recording record information. The ink cartridge is provided with: a cartridge main body in which the solid inks are aligned and retained; and a plurality of gap members disposed in the cartridge main body for prescribing a gap between each pair of the aligned solid inks adjacent to each other in the cartridge main body.

Abstract: A sheet-supply device for supplying a sheet from a stack of sheets to a print mechanism, the sheet supply device including: a sheet-feed roller for feeding the sheet in a sheet-feed direction; a rotatable transport roller disposed downstream from the sheet-feed roller in the sheet-feed direction; a drive source for generating a drive force by rotating in a forward rotational direction to rotate the transport roller in a sheet-transport rotational direction for transporting the sheet away from the sheet-feed roller and a reverse rotational direction to rotate the transport roller in a reverse sheet-transport rotational direction opposite the sheet-transport rotational direction; a drive force transmission mechanism for transmitting drive force from the drive source to the sheet-feed roller to rotate the sheet-feed roller in the sheet-feed rotational direction, the drive force transmission mechanism interrupting transmission of drive force from the drive source to the sheet-feed roller for a short period when t

Abstract: Disclosed is an image forming apparatus for forming an image on roll paper. The image forming apparatus is provided with a printing head to form an image in accordance with an image data, a sheet feed mechanism to feed the roll paper, and a cutter which cuts out the printed portion of the roll paper. The image forming apparatus is further provided with an information recording system which records information related to the roll paper on downstream side of the portion at which the cutter cuts the roll paper.

Abstract: Printed paper is peeled off from an ink sheet at a rear sheet guide roller to be initially fed along a tangential line on a platen roller. When the leading edge of the paper reaches a projecting portion on one of two guide plates, the paper is forcibly bent or redirected toward the other guide plate beyond or through the tangential line, the paper being formed in a shape generally resembling the letter S along a clearance between the projecting portion and the other guide plate. The paper carried in this shape has an inherent stiffness and therefore does not generate vibration due to shaking when peeled off from the ink sheet at the rear sheet guide roller. Consequently, the paper does not beat the guide plates and generates no noise.