JPH045331Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stationary ribbon cassette used in a printer and fixedly installed in the frame of the printer.

[Prior Art] Ribbon cassettes conventionally used in printers include a mobile type, which is attached to a carriage equipped with a printing head and moves with the carriage during printing, and a stationary type, which is fixedly attached to a print frame. However, the present invention belongs to this stationary type.

By the way, in an ink cassette equipped with a means for replenishing ink to an endless ink ribbon, this ink ribbon has a length several times the printing width (the length of the ink ribbon facing the printing paper) in consideration of its durability. Generally, it has a certain length. The ribbon cassette is also provided with a storage chamber for storing long ink ribbons, and in this storage chamber, the ink ribbons to be sent to the printing section are folded, that is, the ink ribbons are tightly packed. It is stored in a meandering state in contact with the

[Problem to be solved] However, if the length of the ink ribbon is long, the ribbon replacement period will be longer, which is desirable from the point of view of extending the life of the ink ribbon. As a result, the cassette becomes larger. Also, by limiting the size of the cassette, the ribbon will be tightly folded within the storage chamber. In particular, the ink cartridge is installed near the entrance of this storage chamber,
If a transfer roller is provided that receives ink from the cartridge, the space is narrower, and the meandering of the ribbon becomes extremely dense, causing premature damage to the ribbon fabric and wrinkles in the fabric. This will deteriorate the print quality and also cause it to get caught up in the transfer roller, causing clogging.

Therefore, the purpose of the present invention is to bring the ink ribbon from a tightly folded state to a state without slack as quickly as possible without increasing the size of the cassette when it is desired to ensure a sufficiently long length of the ink ribbon. To provide a ribbon cassette in which ink ribbon does not become clogged.

[Means for Solving the Problems] The present invention is characterized by a wall formed in the inside of the ribbon cassette in its longitudinal direction and having a predetermined gap from the outer wall at both ends, and an ink cartridge partitioned by the wall. A first passage and a second passage for the ribbon, and the first passage are partitioned through the wall, and a cartridge storage chamber is formed adjacent to the second passage, and a cartridge is stored in the storage chamber. an ink cartridge; a transfer roller to which ink is supplied from the ink cartridge; a guide portion located near the transfer roller in the first path and for allowing the ink ribbon to pass through in a meandering manner; and a second path. It is located at the back of the cartridge storage chamber, and is located close to the cartridge storage chamber and equipped with a pin for hanging the ink ribbon.

[Example] Examples of the present invention will be described below.

In FIG. 1, a cassette case 1 is fixedly attached to a printing frame, and a part of an endless ink ribbon 7 is exposed from a passage 10 to a passage 8 in this case. A space 1a is formed between the exposed ribbon and the recess in the cassette case in which a printing head (not shown) moves.

A partitioning wall 11 is formed in the longitudinal direction of the cassette case 1 of the ribbon cassette.
Both ends of this wall have predetermined gaps 11a, 11b between them and the inner wall of the case. A first passage 9a and a second passage 9b, which also serve as a storage chamber for the ink ribbon 7, are separated by the wall 11. The cartridge storage chamber 2 has a first passage 9a.
The ink cartridge 3 is separated by a wall 9 and is formed in a position close to the second passage 9b, and the ink cartridge 3 is removably located in this storage chamber. The inside of the ink cartridge 3 is filled with an ink-impregnating material (not shown) impregnated with ink.
A core 4 for leading out ink protrudes from the front part.
The rear end of the ink cartridge 3 has a pressing spring 5.
This causes the core 4 to be pressed against the transfer roller 6.
The ink is supplied in contact with the transfer ring 6a. Note that the transfer roller 6 is also used for drawing in the ink ribbon 7. A separator 13 is provided near the transfer roller 6, and a space from this separator to the first passage 9a serves as a guide section through which the ink ribbon 7 passes in a meandering manner. Further, the pressing spring 14 presses the ink ribbon 7 against the transfer roller 6, and further presses the ink ribbon 7 against the passage 10.
An additional spring 15 is provided nearby to apply appropriate tension to the ink ribbon 7 pulled out.

Further, at the back of the second passage 9b, a pin 12 for hanging the ink ribbon 7 is erected close to the cartridge storage chamber 2.

Incidentally, the end-shaped ink ribbon 7 is sent into the first passage 9a through the passage 8 by the rotation of the transfer roller 6, and at the same time is drawn out from the passage 10, thereby circulating. At this time, ink in the ink cartridge 3 is supplied to the ink ribbon 7 via the transfer roller 6. The ink ribbon 7 sent into the first path 9a by the transfer roller 6 is folded in a meandering manner within the guide section at the entrance of the first path. The reason for this is that the width of the first passage 9a near the transfer roller 6 must be narrowed due to the presence of the ink cartridge 3, and as a result, the ink ribbon 7 is tightly folded in this area. .

Therefore, the ink ribbon 7 near the transfer roller 6
In order to prevent the folding density from becoming too large, the ribbon that has passed through the first passage 9a is folded back at the gap 11a, folded back again by the pin 12 in the second passage 9b, and exits from the passage 10 for printing. It is beginning to be used.

As a result, even if the length of the ink ribbon 7 is sufficiently long, the ink ribbon 7 near the transfer roller 6 may
There will be no slack. Therefore, ink ribbon 7
will not get caught up in the transfer roller 6,
Furthermore, the fabric of the ink ribbon 7 is not damaged or wrinkled, and the ink ribbon 7 can circulate smoothly.

[Effect] As described above, according to the present invention, in a ribbon cassette that uses an ink cartridge for ink replenishment, even if the space for the ribbon to the first passage becomes narrow due to the presence of the ink cartridge, the cassette can be made larger. Even if there is no ink ribbon, there will be no slack in the ink ribbon near the transfer roller. Therefore, the ink ribbon is not damaged or wrinkled, and the ink ribbon is smoothly circulated without being caught in the transfer roller.

[Brief explanation of the drawing]

FIG. 1 is a sectional view, and FIG. 2 is a partially sectional front view. DESCRIPTION OF SYMBOLS 1... Cassette case, 1a... Print head movement space, 2... Cartridge storage chamber, 3... Ink cartridge, 6... Transfer roller, 7... Ink ribbon, 9a... First passage, 9b... ...Second passage, 11...Wall, 11a, 11b...Gap between both ends of the wall and the inner surface of the case, 12...Pin.

Claims (1)

[Scope of Claim for Utility Model Registration] A ribbon cassette that supplies ink from an ink cartridge to an endless ink ribbon via a transfer roller, is fixedly installed, and is provided with a space for movement of a printing head, a wall formed in the inside of the ink ribbon in the longitudinal direction, and having both ends having a predetermined gap with the outer wall; a first passage and a second passage for the ink ribbon separated by the wall; and the first passage a cartridge storage chamber partitioned by the wall and formed close to the second passage; an ink cartridge stored in the storage chamber; and a transfer roller supplied with ink from the ink cartridge. a guide section that is located near the transfer roller in the first path and allows the ink ribbon to pass through in a meandering manner; and a guide section that is erected at the back of the second path and approaches the cartridge storage chamber to guide the ink ribbon through the ink ribbon. A ribbon cassette for a printer, characterized in that it is equipped with a pin for hanging the ribbon.