摘要:
Eine Farbtransportvorrichtung hat einen zur Umkehr der Farbbandtransportrichtung reversierbaren elektrischen Antriebsmotor (5) und einen Reversierschalter (32) für den Motor (5). Eine den Reversierschalter (32) betätigende Rolle (31) läuft an einer Kurve (28, 29), die an einem Arm (21) eines Hebels (19, 20, 21) gebildet ist. Ein weiterer Arm (19) dieses Hebels trägt eine (14) von zwei Farbbandgabetn (13, 14), die miteinander gekuppelt sind. Der Motor (5) treibt eine Schnecke (6) an. Ein Schneckenrad (7) ist mit einem Ritzel (8) fest verbunden und zusammen mit diesem längs der Schnecke (6) in zwei Stellungen verschiebbar. In einer Stellung (8) kämmt das Ritzel mit einem an einem der beiden Farbbandspulenträger (1) vorgesehenen Zahnkranz (3). In der anderen Stellung (8') kämmt es mit einem am anderen Farbbandspulenträger (2) gebildeten Zahnkranz (4).
摘要:
A ribbon drive assembly for optimizing the tension across a ribbon supply in a thermal transfer printer comprising a supply spindle and a take up spindle operable for cooperating with each other such that the ribbon supply is fed from the supply spindle through a print station and metered onto the take up spindle. Each spindle is provided with and connected to a motor, a plurality of gears, and a rotary encoder such that the spindles may be independently controlled by a control processor. The control processor is operable for monitoring, detecting, and controlling the operation of the motors and spindles. During operation and in order to maintain a constant ribbon tension, the torque on the motors are continuously adjusted in accordance with various data provided by the printer's processor.
摘要:
An ink sheet cartridge includes a cartridge body 30 rotatably supporting four spools 36, 37, 38, 39. The spool 38 includes a first rotation member 56 having a transmission gear 47 and a shaft member 48 having a flange 48a. The first rotation member 46 is undetachably engaged with the shaft member 48 within a support hole 50 formed to the cartridge body 30 while interposing a side plate 51a between the transmission gear 47 and the flange 48a. An intermediate connector 46 includes resilient pawls 59 and projections 61 for engaging respective mating grooves 60 and locking grooves 62 formed to a takeup-side core tube 41, and is engaged with the flange 48a of the shaft member 48.
摘要:
An ink sheet cartridge 20 includes a cartridge body 30. The cartridge body 30 has a pair of side plates 31a, 31b, a partitioning plate 24, and a cover segment 32 together defining a flame shape with an central open space. When the ink sheet cartridge 20 is accommodated to a facsimile device 1, a thermal head 22 and a platen 17 are positioned at the central open space. Also, the partitioning plate 21 serves as a lower transport chute defining a transport path with an upper chute members 27, so that a recording sheet 4 is transported along the transport path.
摘要:
A ribbon (40) is driven past the printing station of a printer (12) only when a reciprocating print head (22) is moved in the right-to-left direction across the printer (12). An endless timing belt (46), which reciprocates together with the print head (22), causes rotation of a gear pulley (48) that is in mesh with an idler gear (66). The idler gear (66) is supported on a pair of projecting fingers (80, 82) of a plate (68) that is swingable on the spindle (56) supporting the gear pulley (48). The idler gear (66), being maintained in mesh with the gear pulley (48), is responsive to the direction of rotation of the gear pulley (48) through a drag effect of the ends (84, 86) of the projecting fingers (80, 82) on the bottom surface of the idler gear (66), to cause swinging movement of the plate (68) in accordance with the direction of rotation of the gear pulley (48), such that the idler gear (66) is in mesh with a ribbon drive gear (88) only when the print head (22) moves in a right-to-left direction across the printer (12).
摘要:
A thermal ink transfer printing apparatus comprising a carriage (62) moved along the rotating shaft of a platen roller (132), and a thermal head (126) provided with a row of heating elements (174). A fixture (134) which is urged backward by a spring (148) is rotatably attached to the carriage (62) and to the front side (134a) of which is attached the thermal head (126). A solenoid (142) is fixed on the carriage with its core rod (144) contacted with the backside (134b) of the fixture. An ink ribbon (74) fed from an ink ribbon feeding reel (66) and wound around an ink ribbon winding reel (64) after passing through the thermal head (126). The ink ribbon feeding and winding reels are arranged on the carriage. When current is applied to the solenoid (142), the thermal head (126) is pressed against the platen roller (32) to closely contact the ink ribbon (74) with a recording sheet (34) on the circumference of the platen roller (32), while when current supply is stopped to the solenoid, the thermal head is retreated to peel off the ink ribbon from the recording sheet. When blanks corresponding to two serial characters are applied to the thermal head, both of current supply to the solenoid and the winding of the ink ribbon are stopped, to thereby avoid the winding of the ink ribbon unused.