JPS60198268A - Printer - Google Patents

Abstract

PURPOSE:To economize the amount of consumption of transfer sheets as much as possible by providing an electrode array on a line head substrate correspondingly to the effective printing width and by separating a transfer sheet from a transfer medium immediately after its passing through the line head. CONSTITUTION:When an information for printing exists within a line, an output of a line skip decision circuit 30 is set at L level and a line head holding portion transfer means 32 is made at H level and a head 12 and a blade 33 are pressed against a platen 20, and a transfer sheet carrier means 36 carries a transfer sheet 4. When none of the informations for printing exists, the output of the circuit 30 is set at H level and by means 32 the head 12 and the blade 33 are released from the platen 20 and the transfer sheet 4 is separated from the medium 6 to be transferred, suspending carrying of the transfer sheet by the carrier means 36.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to an E-copying sheet that includes at least a resistive layer that generates heat when energized and a colored ink layer whose viscosity decreases when heated, and an electrode for energizing the transfer sheet. This is a printing device that selectively transfers and prints a transfer medium (L colored ink layer), which is composed of a substrate provided with an array, a platen, and its drive unit.

[Prior art]

A conventional transfer sheet comprising at least a resistive layer that generates heat and a colored ink layer whose viscosity decreases when heated;
The principle of the colored ink layer selectively applied to the transfer medium is shown in FIG. In preparation for colored ink/@2', two electrodes 5.2 are brought into contact with the anti-transfer sheet 4, energized and generated, and the resulting heat signal causes the colored ink layer 2 to be transferred to the transfer medium B. As a head, , a large number of metal electrodes 11 are formed on a substrate 10 made of ceramic or the like as shown in FIG. It is a hole-shaped one that uses something that flows through the water. (5 is a base material) This head 12 has a width of, for example, A4 size 20yn, and printing can be completed in one pass.

The actual configuration is as shown in FIG. 3, in which the transfer sheet 4 and the transfer medium 6 are sandwiched and brought into close contact between the head 12 and the platen 20, and printing is performed while the platen 20 is rotated.

At this time, the colored ink layer 2, once melted in the bath, adheres to the transfer medium 6 and then cools again, and the adhesive force with the base material 6 is restored to its original state.After passing through the feed roller 21, it is transferred to the outside. tension υ from
9 and 9 are removed by force. At this time, the adhesive force with the transfer medium 6 is 1 smaller than that of the base material 3, so the colored ink layer 2 is transferred to the transfer medium 6 side, and the important thing is that This means that the colored ink layer 2 plays the role of adhering the transfer sheet 4 and the transfer medium 62 until it is peeled off.

In particular, in the case of applications such as character printers, the actual printing rate is less than a few tens of percent, and the percentage of blank lines that are not printed at all is 50%. For this reason, in the case of an A4 size, all the transfer sheets 4 for the A4 size had to be consumed, which was extremely wasteful in terms of running costs.

〔the purpose〕

The present invention eliminates these drawbacks, and its purpose is to provide a printing press 1tiII device that reduces the consumption of transfer sheets as much as possible and has low running costs.

〔overview〕

The printing device of the present invention includes a transfer sheet including at least a resistance layer that generates heat when energized and a colored ink layer whose viscosity decreases when energized, a substrate provided with an electrode array for energizing the transfer sheet, and a platen. and a driving section thereof, and performs printing by selectively transferring a colored ink layer to a transfer medium, wherein the substrate equipped with the certain hidden array is a line head that corresponds to all during effective printing, The transfer sheet is characterized in that it is separated from the transfer medium immediately after passing through the line head.

[LOL foil example]

Hereinafter, the present invention will be explained from FIG. 4 onwards.

FIG. 4 shows the configuration of the present invention, in which the platen 20
A transfer medium 6 is placed between the head 12 and the blade 36.
Printing is performed by sandwiching the transfer sheet 4 and the transfer sheet 4. 64 is a feeding reel for the transfer sheet 4, 35 is a reel for collecting the first volume, 56
6 is a transfer sheet conveying means, 61 is a line head holding section, and 6 is a transfer sheet conveying means.
2 is a line head holding section moving means. Reference numeral 50 denotes a line skip judgment circuit, which judges whether the information for the line to be printed from now on is blank. The operation is shown in the timing chart in Figure 7.
-(Ride':, 01B-P) At point A, there is information to be printed within the line, and the output of the line blank determination circuit 60 is at L level. Therefore, the line head holder moves. Means 6
2 becomes H level, and the line head holding part 61' (l
- Press the head 12 and blade 63 against the platen. At the same time, the transfer sheet conveyance means 66 conveys the transfer sheet 4.

This state is shown in FIG.

Next, regarding the operation at point B, in this case, since there is no information at all in the line, the output of the line cutoff circuit 60 becomes H level.

Therefore, the twin head holding part moving means 62 moves the head 12 and the blade 36 through the line head holding part 51. At this time, the transfer sheet 4 is separated from the temporary transfer medium 6. Furthermore, at the same time, the transfer sheet conveying means 36 stops conveying the transfer sheet.

This state is shown in FIG.

Furthermore, when A' is reached, Ka operation is performed again as in A. In the above example, the group 3) from the transfer medium 6 of the transfer sheet 4 is
is a blade 33vc installed immediately behind the head 12,
l: This is shown in Figure 6 - T hitting head 1
2 (opposite side of substrate 10), or head 120...I
It may also be performed at the edge (on the magnetic pole 11 side). In this case, the blade 35 becomes unnecessary.

In the following, I will explain about ') l side fall.

- Actual Example 1 - The pitch of the electrode 11 was 5 dots, 1%, and it was used as a line head 12 with a printing time of 20 z.

(head thickness: 1%), and a metal blade 65 was placed 0.5% apart.

In the case of H1l ai Summer, 10 character lines were printed in 1 second, and when a repeating pattern of - line full printing and 1 line completely blank was used as a test pattern, the printing operation was smooth.

At this time, the consumption rate of the transfer sheet 4 was exactly half of the printing area.

Ichii Relaxation Buddha 12 --- As a matter of convenience, the blade 66 was removed and printing was carried out in the manner shown in FIGS. 6A and 6B, and similar results were obtained.

In this case, the color ink layer 2 is not completely solidified and cooled, and the transfer sheet 4 has a slightly lower density because it shatters and peels off within the colored ink layer 2. There was a 'seed'.

Embodiment 6 - Actual sister example 1.2 is a garden, line skip judgment circuit 30
By i! There is no transfer sheet conveyance means 66 for 11 N, and only pack tension is applied to each of the sending reel 64 and the take-up reel 65, and with this force alone, the sheet is not conveyed because it is just stretched to the bin.

This state is shown in FIG.

Next, when the head 12 was pressed against the platen 20 to create a four-phase liquid, the transfer sheet 4 was conveyed by the pressing pressure between the platen 20 and the sucker between the transfer sheet 4 and the transfer medium 6. . This state is shown in No. 8 South.

In this example, as well as in example 1 and example 2, which corresponds to the case where the blade 65 is removed, good printing can be performed, and the consumption of the transfer sheet 4 is reduced by half. is.

〔effect〕

As stated above, fc[0<, uninvented (L), even with line/rad type, it is possible to increase the utilization efficiency of the transfer sheet in the same way as with the serial head, which in turn greatly reduces the running cost of VU printing. It can be reduced to

[Brief explanation of the drawing]

Figure 1, Figure 2 (a) to (c), Figure 6 are conventional/yv,
a. Explanation, FIG. 4, FIG. 5, FIG. 6, and FIG. 7 are explanatory diagrams of the present invention. Figure 81. FIG. 9r is an explanatory diagram of real sister example 6. Mask array 11, substrate 10, head 12, transfer sheet 4
, a transfer medium 6, a line skip determination circuit 30. Line head holding section 31, line head holding section moving means 32
, Transfer sheet conveyance means 66 degrees or more Fig. 1 (C) Fig. 2 Fig. 7 Rono c P% Rainbow Man Fig. 9

Claims (1)

[Scope of Claims] 1) A transfer sheet including at least a resistive layer that generates heat when energized and a removable ink layer whose viscosity decreases when heated, and a substrate that includes an electrode array for energizing the transfer sheet. In a printing apparatus that selectively transfers and prints a colored ink layer onto a transfer medium, the substrate includes a platen and its JQ drive unit, and the substrate equipped with the electrode array has a line corresponding to all during effective printing. 1. A printing apparatus, wherein the transfer sheet is a head, and the transfer sheet is separated from the transfer medium immediately after passing through the line head. 2) A line skip judgment circuit is provided, and at the time of line skip, the line head holding section and the front pillar holding section moving means for separating the line head and the transfer sheet 61ζ from the transfer medium are connected to the printing system described in section 2. Device. 6) The printing apparatus according to claim 2, further comprising a transfer sheet conveying means that does not convey the transfer sheet during line skipping.